54
7.4.
Temperature
The
trak | systemizer dynamics
system must only be used within a temperature range of -
20°C to +40°C. HOPPECKE must provide approval for every occasion that the system is
used outside this temperature range. The optimum service life of the system is achieved at
battery temperatures between 20°C and 30°C. Higher temperatures reduce service life,
lower temperatures reduce the available capacity.
ATTENTION!
45°C is the upper limit temperature and not permissible as the operating temperature. The
storage system should therefore be neither exposed to direct sunlight nor other sources of heat.
In addition to this, the discharge depth (DOD) of the storage system must be limited in
relation to the battery temperature (see Fig. 7.2) at minus temperatures. There is a danger
of the electrolyte freezing and the system being destroyed as a result of this.
The available capacity of the
trak | systemizer dynamics
system during continuous operation
depends on the battery temperature at the start of the discharging process. In order to provide the
maximum battery capacity in applications at minus temperatures, it is recommended to charge the
storage system in areas with plus temperatures and then only return it to its area of deployment
after this has been completed.
-70
-60
-50
-40
-30
-20
-10
0
0
10
20
30
40
50
60
70
80
Ele
c
troly
te
free
z
in
g
po
in
t
in
[
°C]
Discharge level in relation to nominal capacity [%]
Fig. 7.2.: Electrolyte freezing point
trak | systemizer dynamics
vs. discharge level.
7.5.
Efficiency
The
trak | systemizer dynamics
storage system has been designed to be extremely
energy efficient in order to avoid the downtimes required to cool down classic traction
batteries and therefore ensure maximum uptime. In its default configuration and at
discharge rates of up to 1.5 C (vehicle charging profile), and when undergoing continuous
