Our wiki is designed to expel some of the myths surrounding e-mobility, battery technology and apparent miracles.

Energy density

Energy density describes energy content, measured in Watts per volume unit (e.g. litre). The energy density of a laser-welded module is determined by two components: firstly by the type of cell used, secondly by the configuration of these cells. The VL BM61 module enables a very compact and therefore very dense configuration of cells. Globally, there are a handful of premium cell manufacturers (e.g. Panasonic, Sony, LG, Samsung, A123). Voltlabor uses all round format cells available on the market from all the premium manufacturers. Different manufacturers and types of cell are used, depending on the requirements.

Cell or module?

Cells are the raw material of a battery pack. Voltlabor uses cells in 18650 format (18 mm diameter, 65 mm long), as well as 26650, 26800 and 32600. A module consists of several cells connected in parallel. At Voltlabor the cells are connected to each other using laser welding. This is a process that has since been copied by numerous competitors.

Module or battery pack?

A battery pack consists of several modules connected in series.

BMS

BMS stands for Battery Management System and describes the circuit board plus software that is needed to control the battery packs.

Laser welding

An extremely precise welding process that applies energy by laser. Thanks to the homogeneous material bond created by laser welding, the transfer resistance is reduced to effectively zero (2 to the power of -6 Ohms), limiting the resistance of the system to the internal resistance of the materials used. Voltlabor has more than 10 years of experience using efficient methods to connect cells and has been using laser technology to provide a reliable bond between battery cells since 2011.

Thermal Runaway

This describes the overheating of technical apparatus, leading to its destruction. In terms of batteries, individual cells can by subject to thermal runaway and explode as a result. Voltlabor has developed a special fuse to prevent a domino effect in the event of a terminal runaway. In addition, the cells do not contact each other pole-to-pole. Without a fuse and with pole-to-pole contact, the system is at greater risk of the domino effect occurring. In the event of a thermal runaway, just one cell affects all the other cells in the system.

Our wiki is designed to expel some of the myths surrounding e-mobility, battery technology and apparent miracles.

Energy density

Energy density describes energy content, measured in Watts per volume unit (e.g. litre). The energy density of a laser-welded module is determined by two components: firstly by the type of cell used, secondly by the configuration of these cells. The VL BM61 module enables a very compact and therefore very dense configuration of cells. Globally, there are a handful of premium cell manufacturers (e.g. Panasonic, Sony, LG, Samsung, A123). Voltlabor uses all round format cells available on the market from all the premium manufacturers. Different manufacturers and types of cell are used, depending on the requirements.

Cell or module?

Cells are the raw material of a battery pack. Voltlabor uses cells in 18650 format (18 mm diameter, 65 mm long), as well as 26650, 26800 and 32600. A module consists of several cells connected in parallel. At Voltlabor the cells are connected to each other using laser welding. This is a process that has since been copied by numerous competitors.

Module or battery pack?

A battery pack consists of several modules connected in series.

BMS

BMS stands for Battery Management System and describes the circuit board plus software that is needed to control the battery packs.

Laser welding

An extremely precise welding process that applies energy by laser. Thanks to the homogeneous material bond created by laser welding, the transfer resistance is reduced to effectively zero (2 to the power of -6 Ohms), limiting the resistance of the system to the internal resistance of the materials used. Voltlabor has more than 10 years of experience using efficient methods to connect cells and has been using laser technology to provide a reliable bond between battery cells since 2011.

Thermal Runaway

This describes the overheating of technical apparatus, leading to its destruction. In terms of batteries, individual cells can by subject to thermal runaway and explode as a result. Voltlabor has developed a special fuse to prevent a domino effect in the event of a terminal runaway. In addition, the cells do not contact each other pole-to-pole. Without a fuse and with pole-to-pole contact, the system is at greater risk of the domino effect occurring. In the event of a thermal runaway, just one cell affects all the other cells in the system.