Daimler eActros LongHaul
Daimler Trucks unveils for the first time Heavy-duty, Battery-electric eActros LongHaul long Distance Truck.
capacity
Benchmarking Battery Packs
When benchmarking battery packs the intention is to create a standard list of data and then a list of references. This form will post will form the standard list that we will use going forward and hence we need to get this 90% complete before we start. The first thing to look at when benchmarking … Read more
EV Current Sensors: The Basics
EV current sensors are basic components. They perform two major tasks. They help us to know how much energy we use. Also, the second task is avoiding overcurrents. Therefore, current sensors are a major sub-systems of a battery design. EV current sensors can include resistive or magnetic elements based on their structure. We use these … Read more
Usable SoC Window
If we want a battery cell to last a lot of cycles, extend the life in a power application or to ensure the available power is consistent then we need to set a usable SoC window that is smaller than 100%. That is we will limit the top end charge to perhaps 95% SoC and … Read more
State of Charge
State of Charge, abbreviated as SoC and defined as the amount of charge in the cell as a percentage compared to the nominal capacity of the cell in Ah. As an example, for the Samsung SDI 94Ah cell [Ref 1]. However, the capacity remaining needs to be defined against specific test conditions, eg rated capacity … Read more
Cells in Series
When connecting cells in series the negative terminal of the first cell is connected to the positive terminal of the second cell. The negative terminal of the second cell is connected to the positive terminal of the third cell. This continues until we reach the total number of cells required in series. The nominal voltage … Read more
Battery Capacity
The amount of energy available from a battery. Chemical Capacity – full storage capacity of the chemistry when measured from full to empty or empty to full. This is normally defined at a given C-rate and maximum and minimum voltages. Designed Capacity – the storage capacity allowed to be used by the application. Often called … Read more