Wiki
THE MOST IMPORTANT TERMS ABOUT BATTERIES
The wiki provides an overview of key terms relating to battery sytems and related technologies and terms:
Definition of terms
SOH / SOC
State of Health is a parameter that indicates the chemical-physical state of the battery's health. Depending on the usage profile, charging and discharging behavior and storage, the condition of the battery will vary significantly. After measuring the SOH value, it will be compared with... learn more
Immersion cooling
There are different types of cooling concepts used for battery systems. One possible, technically sophisticated concept is immersion cooling. In contrast to indirect contact cooling, the battery cells are cooled directly by a liquid. A dielectric fluid is usually guided along the surface of the battery cell in order to... learn more
NMC battery
NMC stands for lithium-nickel-manganese-cobalt oxide and is a very common battery oxide. These materials are used in particular in high-performance battery cells or accumulators with a very high energy density. This ranges from 230-250 Wh/kg for NMC batteries. NMC chemistry is a state-of-the-art technology that has established itself in conjunction with... learn more
Thermal runaway
Thermal runaway or TP is the risk of “thermal runaway” of a battery. If an internal short circuit occurs in the electrodes of a lithium-ion battery, for example due to contamination of the separator by a trapped foreign particle or mechanical damage, the short-circuit current can heat up the immediate vicinity of the damaged area due to the internal resistance. As a result, the surrounding areas are also... learn more
Lithium-ion battery
All batteries based on lithium compounds are referred to as lithium-ion batteries. The reactive materials of the negative and positive electrodes and the electrolyte contain lithium ions. There are a large number of different lithium-ion batteries, which differ not only in size and design, but also in the... learn more
Lithium-iron-phosphate battery
The lithium-iron phosphate battery or LFP battery is a variant of the lithium-ion battery with a cell voltage of 3.2 V to 3.3 V. In contrast to conventional lithium cobalt(III) oxide (LiCoO2) batteries, the positive electrode consists of lithium iron phosphate (LiFePO4), while the negative electrode is made of graphite with embedded lithium. This type of battery has a lowe... learn more
Internal short circuit
An internal short circuit in a battery occurs when there is direct electrical contact between the two electrodes (anode and cathode) within the battery that is not mediated by the intended electrolyte. Instead, an unwanted and direct connection occurs that bypasses the normal current flow and leads to a rapid and uncontrolled... learn more
Battery management system
A battery management system (BMS) is an electronic circuit used in rechargeable batteries to monitor, control and optimize their operation. The BMS plays a crucial role in the safety, efficiency and service life of batteries, especially in applications with... learn more
BMS
see also Battery management sysstem
Battery manufacturer
A battery manufacturer is a company or organization that specializes in the production and development of batteries. These companies produce various types of batteries that are used in a wide range of applications, from consumer products such as... learn more
Battery system
A battery system is an arrangement of batteries and associated components that work together to store and release electrical energy when needed. It is used in a variety of applications, from small portable devices to large... learn more
Traction battery
A traction battery is a special type of battery that is used in vehicles to provide traction energy. The term “traction” refers to the movement of a vehicle. Therefore, a traction battery is primarily used to provide the energy for the drive motor of a... learn more
Number of cycles
The number of cycles refers to the number of charging and discharging cycles that a battery can undergo before its capacity decreases significantly. A charging cycle comprises a complete charging and discharging process, i.e. charging the battery from 0% to 100% and then discharging it back to... learn more
Thermal propagation
Thermal propagation refers to a process in which the heat generated in a battery spreads to neighboring battery cells or modules. This can lead to a chain reaction effect in which overheating or a thermal runaway in one cell or module causes uncontrolled heating of... learn more
Electrification
The term electrification refers to the process of converting technologies, systems or infrastructures that were previously powered by other energy sources such as fossil fuels to electrical energy. This process plays a central role in the energy transition and the decarbonization of the economy and society by enabling the use of renewable energy and reducing... learn more