Understanding Battery Safety and Environmental Considerations

In recent years, photovoltaic power generation has become more and more popular, and many users store excess power in battery clocks. In the process of battery use, safety and environmental issues should not be ignored, the following are some of the relevant aspects and countermeasures.

Safety risks and preventive measures:

Overcharging and over-discharging risk: Li-ion batteries may induce thermal chemical reaction inside the battery under improper use, such as overcharging, high temperature, collision, etc., leading to the occurrence of thermal runaway, which will cause a systematic fire accident if it spreads inside the battery module, and the thermal runaway will also produce poisonous and combustible gases, which are more difficult to extinguish. In order to prevent such risks, on the one hand, it is necessary to choose batteries that comply with relevant safety standards (such as the IEC62619 standard); on the other hand, the battery management system (BMS) plays a key role, which must be certified by the IEC61508 standard to ensure that the battery will not operate beyond its limits, while some energy storage systems are equipped with a charging device such as a three-stage charging in stages, constant-current, constant-voltage and float charging stages can be used to ensure that the battery will not exceed its limits, Constant current, constant voltage and float charging are three stages to better ensure charging safety and avoid overcharging.

Risks of safe integration of battery modules: For battery modules and racks, make sure they comply with UL1973 and IEC62619 standards. Selecting batteries certified to the UL9540A standard means that they have been tested to simulate a thermal runaway event, so that you can check that a fire will not spread, and that the batteries are mounted in battery cabinets with robust enclosures that are isolated from each other, which can help to prevent the spread of a fire event to other battery cabinets. This helps to prevent a fire event from spreading to other battery cabinets, and the battery cabinet enclosure should be highly fire-resistant, provide thermal insulation, and safeguard the batteries in a suitable temperature environment (typically between 20°C and 23°C). ADAYO 5kwh storage batteries are CE/IEC certified and comply with safety standards.

Environmental impact and recycling disposal situation:

Environmental impact of different batteries: like lead-acid batteries in the production, use and end-of-life disposal process, if not handled properly, lead pollution is greater; and lithium-ion batteries and other batteries in the battery manufacturing process, there are also problems such as material and energy consumption, large-scale construction of energy storage facilities may have a certain impact on the ecological environment, such as the land occupation of the situation. However, there are some batteries that are relatively environmentally friendly, such as lithium iron phosphate batteries perform better in terms of environmental protection.

Recycling and processing: At present, energy storage battery recycling is mainly through sellers, manufacturers, professional recycling enterprises and other channels, but the overall recycling rate is low, the energy storage battery recycling system is not yet sound, the lack of uniform recycling standards and norms, resulting in low recycling efficiency. At the same time, due to the wide variety of energy storage batteries, the recycling and treatment process requires a large amount of investment in capital and equipment, making the recycling cost high. From a technical point of view, there are a variety of reuse technology methods such as direct use (testing and screening of energy storage batteries, and directly reuse batteries with good performance), dismantling and recycling (dismantling of damaged batteries, separating materials for recycling and reuse) and so on, and with the government's emphasis on environmental protection, the follow-up will be introduced to encourage recycling of storage batteries and reuse, and to promote the development of the industry, relevant enterprises and research institutions are also constantly exploring more ways to improve the recycling of storage batteries. Relevant enterprises and research institutions are also constantly exploring more efficient and environmentally friendly recycling and reuse technology path to improve the recycling rate of resources and reduce the impact on the environment.

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