Energy Storage Connector in Energy Storage System

What is an Energy Storage System(ESS)?

In recent years, the world has been vigorously developing wind power and photovoltaic power generation to replace the declining trend of fossil energy and to protect the environment; however, photovoltaic and wind power generation is limited by their instability (wind power can generate electricity when there is wind, but not when there is no wind. Photovoltaic has light to generate electricity, no light can not generate electricity), can not be a continuous and stable output power. Based on this, in wind and light power plants and household new energy generation systems, companies began to develop energy storage systems for storing electricity to ensure that it can be a stable output of electricity.

Energy Storage System(ESS) is a game-changing technology that has the ability to store energy for later use. In the analysis of energy storage processes, the part of the object or spatial area that is delineated in order to determine the object of study is called the energy storage system. It includes energy and material input and output, energy conversion, and storage devices. Energy storage systems often involve multiple energies, multiple devices, multiple substances, and multiple processes, and are complex energy systems that change over time.

In a word, ESS not only addresses solar intermittency but also enhances grid resilience by actively managing mismatches between electricity supply and demand.

Grid Energy Storage

The most common energy storage technologies are thermal energy storage technology, electrical energy storage technology, chemical energy storage technology, light weight the most mature energy storage technology, which is not limited by geography.

Energy storage systems are generally composed of multiple battery modules, which are connected in series by energy storage connectors to form a large energy storage module.

Energy Storage Connector in ESS

In an energy storage system, Energy storage connectors are essential, and a proper connector can accelerate the installation and energy transfer of a battery cell-based energy storage system. Energy storage connectors have become a key component for current or signal connections. Energy storage connector products are small but not at all simple in function. From a technical point of view, energy storage connectors are in two categories. One is responsible for transmitting high current and high voltage power storage connectors. One is responsible for small current and low voltage signal energy storage connectors.

Energy Storage System with the Help of Fast Plugging

The energy storage market has grown rapidly over the past few years and is one of the hottest markets in market fervour. The global discussion about the sustainable use of renewable energy sources has undoubtedly given further impetus to the overall development of this market. The sustainable use of renewable energy can only be achieved through energy storage systems ESS, which can support the storage of electricity generated from renewable energy sources for time-delayed, demand-driven use, both to avoid the outbreak of massive frequency fluctuations caused by the delivery of too much power to the grid and to provide reliable power to the network.

In an energy storage system, connectors are essential, and a proper connector can accelerate the installation and energy transfer of a battery cell-based energy storage system. Energy storage connectors have become a key component for current or signal connections. Energy storage connector products are small but not at all simple in function. From a technical point of view, energy storage connectors are in two categories. One is responsible for transmitting high-current and high voltage power storage connectors. One is responsible for small current and low voltage signal energy storage connectors.

Energy Storage Connector Connection Method

There are currently two technical schools of energy storage connectors. One is the fast plug method. There is a copper row connection. From the point of view of several internationally renowned connector manufacturers' products are pushing fast plug this technology.

A copper row connection is a soft connection, copper row soft connection of the lap interface using molecular diffusion welding technology one-time welding moulding, strong electrical conductivity, the ability to withstand the current is relatively large, and the high current connection does have advantages. And the more critical point is that, from a technical point of view alone, the consistency of the copper row connection may be better in comparison.

The word "may" is used here because even the well-known international leaders in energy storage connections cannot guarantee to keep consistency within a fixed range in a system with a dense accumulation of connections. Of course, this method's copper row connection brings installation and maintenance costs much higher than the quick plug, requiring on-site manual installation, and no anti-electrical shock safety is not high.

Quick plug technology reflects more advantages. The first is the anti-electrical shock function, clearly defined in the latest UL4128 standard for static energy storage systems. Quick plug positive and negative anti-misplacement also increases the safety of connected equipment in the structure, and the copper connection safety factor is much higher. Easy to install, but the equipment cost will naturally be higher. Weak consistency is the problem of fast plug technology that can not avoid the structure of the terminals in this part.

The design of the intrinsic structural aspects determines its consistency is slightly weaker, and fast plug technology in the design process must be enlarged margin, the consistency of the connection resistance is not possible without fluctuations. The specific degree of consistency that can be achieved depends on the technical strength of the manufacturers.

Quick plug technology generally gives the connector enough rotation angle to facilitate rapid installation while further saving wiring space, but also conducive to multi-directional line out. To further improve safety during installation, visual locking control mechanisms and finger protection contacts can be added; in order to ensure the accuracy of the connection process, an effective mechanical coding system is also added to the connector. Time and cost savings can be achieved through quick plugging and unplugging.

Energy Storage High Power Connection

One of the main goals of the energy storage system ESS is higher capacity. 200 A/800V DC usually powers the previous ESS. The application trend is moving toward higher energy density, and the demand for 300 A/1200V DC and larger specifications interface transmission is growing. In this trend, many connector manufacturers are developing 300 A modules to achieve parallel in the multi-module interface to provide power, data and signals for ESS.

For example, in Metabee's energy storage connector series, different modules are under the current rating of each terminal up to 150A / 200A / 300A / 400A / 480A.

Fast plug technology energy storage connector rated current in the selection of the best choice of 1.3 to 1.4 times the standard current, leaving a margin. Of course, the prerequisite for high power is safety, reliability and high consistency.

Triple Defense and One Turn

• Anti-misinsertion: Positive and negative pole anti-misinsertion design prevents personnel from misinsertion.
• Waterproof and dustproof: IP20/IP54/IP55/IP67 protection level.
• Anti-electrical shock: The socket is protected against electric shock.
• Rotatable: The plug and socket can be rotated 360° to meet different wiring needs of customers.
• Socket single waterproof.
• Socket end wiring method has three options: male thread, female thread, and Busbar.

Summarize

The rapid development of new energy vehicles has driven the expansion of the energy storage connector market volume. In addition to high power connections, fast plug technology under the connection safety and reliability advantages are obvious, but also relatively high cost. More importantly, ensuring consistency in the dense connection of the energy storage system, which is the development of energy storage connectors, can not avoid the difficult point.