Difference Between Power Batteries and Energy Storage Batteries-Safety Vents Manufacturer
Energy storage batteries and power batteries are important technologies in today’s energy storage and electric transportation fields. In essence, both batteries are energy storage batteries, and there is not much difference in their technical routes. So, what is the difference between these two batteries? This article introduces and analyzes them to help you better understand the specific differences between the two batteries.
What is an Energy Storage Battery?
Energy storage batteries, as the name suggests, are battery systems used to store electrical energy. They are able to convert electrical energy into chemical energy, store the charge in the battery, and then release it when needed. Energy storage batteries are generally designed for long-term energy storage charging and discharging and play an important role in grid dispatching, peak load reduction, and power management. The key features of energy storage batteries are high capacity, long cycle life, and stable performance.
What is a Power Battery?
Power batteries are specifically designed to provide the power required by electric vehicles. They need to have high energy density and high power output to meet the requirements of electric vehicles for acceleration performance and mileage. The design focus of power batteries is to improve the charging speed, discharge speed, and cycle life of the battery. At the same time, safety is also an important aspect of power batteries to ensure reliable operation under various conditions.
Further exploration of the main differences between energy storage batteries and power batteries is mainly reflected in the following points.
Differences in Application Scenarios
Energy storage batteries are widely used in power grid energy storage, household energy storage, industrial and commercial energy storage, communication base stations and other fields. The design requirements of energy storage batteries are mainly optimized for energy density and long-term storage to meet the needs of large capacity and long-lasting energy storage. Since most energy storage devices do not need to be moved, energy storage lithium batteries do not have a direct demand for energy density. Different energy storage scenarios have different requirements for power density. In terms of battery materials, pay attention to expansion rate, energy density, uniformity of electrode material performance, etc., in order to pursue long life and low cost of the entire energy storage equipment.
Power batteries are used in new energy passenger cars, commercial vehicles and other transportation-related industries. Power batteries focus more on power density and high power output in a short period to meet the long-mileage requirements of electric vehicles with rapid acceleration. Compared with energy storage batteries, power batteries may have higher requirements for energy density and power density.
Differences in System Composition
- Power Battery
Power battery Pack is basically composed of the following systems: battery module, battery management system, thermal management system, electrical system and structural system.
The cost of the power battery system is composed of the comprehensive cost of battery cells, structural parts, BMS, box, auxiliary materials, manufacturing costs, etc. The battery cell accounts for about 80% of the cost, and the PACK cost accounts for about 20% of the total battery cost. The energy storage battery system is mainly composed of battery packs, battery management systems (BMS), energy management systems (EMS), power storage converters (PCS) and other electrical equipment.
- Energy Storage Battery
In the cost structure of the energy storage system, the battery is an important component of the energy storage system, accounting for 60% of the cost, followed by the energy storage inverter, accounting for 20%, EMS (energy management system) costs accounting for 10%, BMS (battery management system) costs accounting for 5%, and others accounting for 5%.
Safety Assurance
At present, most domestic battery companies are dominated by prismatic structures. The battery cover is assembled on a separate battery cell, and the battery safety vents are welded on the cover. The battery safety vent is mainly for pressure relief protection. Pressure relief protection refers to setting an explosion-proof valve on the battery-sealed shell and cover. When the internal air pressure of the battery reaches the threshold, the safety vents will burst open, the internal gas will be released outward, and the battery will be depressurized. Because prismatic cells have to cope with the use of different spaces, lithium battery safety vents will also be customized according to different needs. But behind the high flexibility is the low degree of standardization, and it isn’t easy to achieve uniformity in the process.
At present, domestic and foreign companies, universities, and research institutes have carried out a lot of work on the top cover module, but so far, the industry and relevant national management units have no unified standards for the explosion-proof valve structure. Therefore, when choosing a suitable explosion-proof disk solution, it is necessary to make rational judgments based on actual conditions and needs to ensure the safety and reliability of the battery system.
Hejustamping-Prismatic Lithium Battery Safety Vents Stamping Manufacturer
Dongguan Heju Precision Electronic Technology Co., Ltd. specializes in the high volumn production of new energy vehicles lithium battery safety vents. As one of the pioneering companies in China to develop and produce ev battery safety vents, we offer a wide range of models with comprehensive specifications. Our single pressure range can reach 0.03MPA, with CPK exceeding 2.0. With a robust technical R&D team, we actively collaborate with customers in developing new products. We have obtained three major management system certifications – ISO9001, ISO14001, and IATF16949. With a daily production capacity in the millions, we are well-equipped to meet your production needs.