If you are interested in new forms of energy storage, you will find a compact overview of our most popular products in this area on this page. In addition, the graphic on the right gives you an overview of the numerous areas of application of our Energy-C products (click for large). Good to know: the new storage tanks are already in series production! If you don't find what you are looking for here, please call us on +49 2151 652088-0. Alternatively, you can also search for various parameters in our product search.
If you are interested in new forms of energy storage, you will find a compact overview of our most popular products in this area on this page. In addition, the graphic on the right gives you an overview of the numerous areas of application of our Energy-C products (click for large). Good to know: the new storage tanks are already in series production! If you don't find what you are looking for here, please call us on +49 2151 652088-0. Alternatively, you can also search for various parameters in our product search.
Radial - the first choice for a space-saving design! Both the EDLC and the LiC technology of the energy capacitors are used in this design. With the individual characteristics of both technologies many different requirements can be met. In the EDLC sector, a distinction must also be made between radial components with one cell (“single cell”) and with two cells (“multi-cell”).
Single cell products are used in the following applications, for example:
· Smart meters
· Peak shaving low power
· DC grid stabilization
· Energy buffers in hybrid systems
Radial - the first choice for a space-saving design! Both the EDLC and the LiC technology of the energy capacitors are used in this design. With the individual characteristics of both technologies many different requirements can be met. In the EDLC sector, a distinction must also be made between radial components with one cell (“single cell”) and with two cells (“multi-cell”).
Multi cell products are used in the following applications, for example:
· Smart meters
· Peak shaving low power
· DC grid stabilization
· Energy buffers in hybrid systems
The snap-in design is the best choice for greater demands. High power consumption is no problem, and with the right connection, a real energy package is created!
Axial design enables maximum performance. Highest possible currents at highest cycle stability in a compact design for the most demanding requirements.
Common applications could be:
· Peakshaving high Power
· High Power Grid Applications
· High Power UPS
· Pitch-Systems
Radial - the first choice for a space-saving design! Both the EDLC and the LiC technology of the energy capacitors are used in this design. With the individual characteristics of both technologies many different requirements can be met.
Our LiC Radial components are used in these applications, for example:
· Smart metering
· UPS (longer holding times than EDLC)
· power tools
· Energy harvesting
Axial design enables maximum performance. Highest possible currents at highest cycle stability in a compact design for the most demanding requirements.
In the LiC sector, axial designs are also known as welded columns or tubes.
Axial LiC products are used in these applications, among others:
· AGV
· elevator
· e-mobility
· UPS (High Power and High Energy)
· traction
The prismatic Energy-C cell is not only visually similar to that of an accumulator cell, but the area of application also overlaps.
Pouch products are used in applications such as:
· AGV
· elevator
· e-mobility
· UPS (High Power and High Energy)
· traction
The modules form the pinnacle of these capacitors! Adaptable and tailor-made solutions are found for every requirement. Whether it's an existing application or an initial idea, energy capacitors provide the energy!
Modules, whether LiC or EDLC, are always custom-designed. For this reason, there are no series of this type. The document that we offer you here for download contains a small questionnaire that may help you to specify your requirements.
Your contact at Jianghai Europe for LiC and EDLC modules is Alexander Schedlock.
Loosely based on Schopenhauer, one could say, especially in the field of power electronics, “Capacitors are not everything. But without capacitors, everything is nothing.” - This is how indispensable these so-called passive components are in the development of durable electronic products! In many applications, the lifetime and reliability of the device depend directly on the corresponding parameters of the capacitors. In order to achieve reliable operation of electronic devices for a defined lifetime, an understanding of the properties and physical application limits of capacitors is essential.
What is the function of a capacitor? Capacitors are components in electrical engineering and electronics that have the ability to bridge the absence of an electrical voltage from the voltage source for a brief moment. They therefore store electrical charges and the associated electrical energy in the form of an electrical field.
In general: How is a capacitor constructed? Every capacitor is based on the principle of the plate capacitor: it consists of two electrically conductive plates, known as the anode (+) and cathode (-). An insulator (dielectric) is inserted between the plates to separate the charges. Depending on the technology, this results in electrolytic capacitors for aluminum oxide, film capacitors for plastics, MLCCs for ceramics and others. The physical properties of the capacitors’ construction materials determine the electrical parameters of the capacitor, for example capacitance and rated voltage.
TECH TALK ENERGY CAPACITORS
How do energy capacitors (also known as supercaps or energy-Cs) work?
An EDLC capacitor consists of two electrodes with a very large surface area (e.g., activated carbon), separated by a separator and impregnated with an electrolyte. When a voltage is applied, electrostatic double layers form at the electrode-electrolyte interface, which store the charge. In this case, the capacity is not created by a chemical reaction, but by the electrostatic arrangement of the ions. The large surface area (plate) and the tiny plate spacing (the thickness of a solvent molecule) result in a large capacity – hence the names supercapacitors or ultracapacitors.
A LiC (lithium-ion capacitor) basically consists of two electrodes (anode and cathode) separated by a separator and impregnated with an electrolyte. The structure is asymmetrical: the anode resembles that of a lithium-ion battery, while the cathode resembles a supercapacitor. The entire structure is housed in a casing and connected to the outside world via terminals, with several cells connected in series to provide higher voltages. Unlike batteries, which store energy chemically, LiCs store their energy electrostatically. Unlike double-layer capacitors, however, lithium-ion capacitors can store up to 10 times more energy. For this reason, LiCs are sometimes referred to as hybrid capacitors.
STRUCTURE & SPECIAL FEATURES
DATASHEET PARAMETERS
designs
areas of application
Structure and special features of EDLC
The structure of an EDLC (electric double-layer capacitor) is simple but effective. Two electrodes form the basis of the design. The electrode material (usually activated carbon, graphene structures, or carbon nanomaterials) is applied to an electrically contactable collector and forms both electrodes of the capacitors. A membrane, known as a separator, separates the two electrodes from each other, thereby protecting them from short circuits. The separator is permeable to the ions of the (usually liquid) electrolyte. The electrolyte acts as an ion supplier, which are the carriers of the electric current in the EDLC. When a voltage is applied, the positively and negatively charged ions migrate to the electrodes in a mirror image. There they accumulate at the phase boundaries between the solid electrode and the liquid electrolyte and form the so-called double layer. This means that ions from the electrolyte and ions from the electrode, also known as counterions, face each other. The solvent molecules that separate the charges are polarized by the electric field. The double layer acts like a plate capacitor; in total, therefore, two capacitors connected in series are at work. Because the dielectric is formed from only one layer of solvent molecules, the “plate spacing” of the capacitor is very small. Together with the large surface area of the electrodes, the EDLC achieves its well-known high total capacity.
Structure and special features of LiC
The design of a lithium-ion capacitor (LiC) is similar to that of an EDLC. One of the activated carbon electrodes used is identical in design to that used in a double-layer capacitor. However, the second electrode is replaced by a highly pseudocapacitive electrode consisting of graphite doped with lithium ions. LiCs therefore have two different electrodes with different capabilities. As a powerful variant of the double-layer capacitor, the lithium-ion capacitor scores with energy densities that previously only batteries could offer. This closes the gap between capacitors and batteries. The innovative character of this young technology lies in supplying energy to applications for which there was previously no solution.
What other parameters can you find in the Jianghai capacitor data sheet?
Jianghai capacitor data sheets contain a wealth of information that makes it easier to find the right EDLC or LiC. Among other things, these parameters are particularly important:
Capacitance (CR)
Electrical capacitance indicates how much electrical charge a capacitor can hold at a given electrical voltage
Rated voltage (UR)
The rated voltage indicates the voltage that a capacitor can withstand without breaking down
Leakage current (Ileak)
Leakage current is unwanted electrical current that flows through a path not intended for that purpose. The lower the leakage current, the better.
Rated current (IR)
Rated current indicates the current strength for which an electrical device or component is designed.
Continuous current (IMAX)
Continuous current does not flow through the capacitor itself, but only flows through it during the charging process. Once the capacitor is charged, it becomes high-impedance and little to no current flows.
Surge current (IS)
Surge current describes a brief but high current that occurs when an uncharged or only slightly charged capacitor is connected to a voltage source.
Stored energy (Wh)
Describes the potential electrical energy stored in the electric field between the capacitor plates.
Specific energy density (Wh/kg)
The specific energy density of capacitors indicates how much energy can be stored per kilogram.
Power density IPM (kW/kg)
Power density specifies how much electrical power can be drawn in relation to weight. Supercapacitors have a significantly higher power density than batteries because they do not generate energy chemically, but in an electric field, where the energy of a capacitor is also stored and can be quickly released (a very useful property in areas such as energy recovery!).
What designs does Jianghai offer for its Energy-C products?
