HIGHTEC ANTIFREEZE COOLANT LCC 100

Low-conductivity coolant for electric vehicles
Maximum safety for batteries & high-voltage systems

Why do batteries in electric cars need cooling?

In order for electric car batteries to function reliably and for a long time, they must be operated within a narrow temperature window. Overheating leads to a loss of performance, a shortened service life and, in the worst case, even damage.

The solution used by many manufacturers is cold plate cooling: the battery modules sit directly on a metal plate through which coolant flows and the heat generated is efficiently dissipated.

THE CHALLENGE: CONVENTIONAL COOLANTS ARE NOT ENOUGH

With the coldplate design, the coolant flows in close proximity to the battery and high-voltage components. However, conventional engine coolants are electrically conductive. This property is unproblematic in the combustion engine - in the electric car, however, it poses a considerable risk if leaks occur in this design and the coolant comes into direct contact with the electrical components.

Risks of conventional coolants:

SHORT CIRCUITS
Conductive liquids
form uncontrolled current paths

GAS FORMATION
Hydrogen can be produced by electrolysis

CORROSION
Aluminum and copper
are damaged

Conductivity in a technology comparison

Each technology places its own requirements on the coolant Thanks to carefully coordinated additive technologies, our products achieve the optimum conductivity in each case and offer maximum efficiency in every area of application. The chart shows a direct comparison of the different conductivities of typical coolant technologies. Coolants for electric vehicles and fuel cell systems require significantly lower values than conventional coolants.

International standards such as ASTM D8566 and GB/T 29743.2 therefore expressly recommend coolants with very low electrical conductivity.

Our solution:
Low-conductivity coolant

for electric cars and high-voltage systems

Our specially developed coolant < 100 µS/cm combines thermal performance with electrical safety. This enables us to create the basis for reliable and safe thermal management in modern electric vehicles.

Your advantages:

MAXIMUM
SAFETY

No danger to battery & vehicle occupants even in the event of leaks.

MORE
RELIABILITY

No hydrogen, no pressure build-up - therefore less maintenance.

LONG-TERM CORROSION PROTECTION

Protection of sensitive materials such as aluminum & copper.

HIGH
THERMAL STABILITY

Safe in continuous and high-load operation.

SIMPLE
INTEGRATION

Compatible with existing systems,
no retrofitting necessary.

The result:
Longer battery life, greater range, increased safety.

Typical areas of application

Battery modules
with coldplate cooling

High-voltage architectures (400 V - 800 V)

Power electronics and inverters

Electric vehicles of all types

FAQs -
Frequently asked questions

Coolants for combustion engines contain anti-corrosion additives such as carboxylates, phosphates or silicates, which make the fluid electrically conductive. In high-voltage systems, even small leaks can trigger current paths, electrolysis and corrosion.

If conductive coolant comes into contact with HV components, leakage currents can occur via the fluid or surfaces, which can directly cause short circuits. This can result in shutdowns, component damage or safety-relevant events.

Comparison of conductivities:

Pure demineralized/DI water: < 1 µS/cm

Classic coolants: approx. 2000-4000 µS/cm

Low conductivity coolant: < 100 µS/cm (even after ageing)
In addition to low conductivity, ASTM D8566, ASTM D8485 and GB/T 29743.2 require, among other things

Stability of conductivity over the entire service life

Material compatibility (elastomers and polymers)

Corrosion protection for aluminum and copper

No conductive degradation products due to ageing

Thermal and oxidative resistance

A central point of the standards is that the conductivity must remain low during ageing and must not increase due to degradation products or additive reactions.
Conductivity describes how easily current can flow through a liquid and is directly dependent on the quantity of dissolved ions: the more ions, the higher the conductivity.

In high-voltage systems, dangerous situations arise not only from the liquid itself, but also from leakage currents across surfaces, which can occur even at low conductivity.

HIGHTEC ANTIFREEZE COOLANT LCC 100 remains below 100 µS/cm even after prolonged use - and therefore meets the safety requirements for high-voltage systems.
This ensures that no relevant current flow occurs even in contact with sensitive components.
Coldplates allow particularly direct and efficient heat dissipation because the battery modules sit directly on the metal plate through which the air flows. This has several advantages:

Efficiency - rapid dissipation of heat directly from the module

Compactness - can be integrated into the battery module to save space

Reliability - fewer components and interfaces, resulting in a lower risk of leakage

As the cooling channels in the coldplate are only a few millimetres below the current-carrying cell connectors, very low conductivity of the coolant is relevant to safety.

HIGHTEC ANTIFREEZE COOLANT LCC 100 makes this technology even safer because no dangerous current paths can occur even in the event of a leak.
No. Even small quantities of conventional coolants or tap water significantly increase the electrical conductivity. Only the specified HIGHTEC ANTIFREEZE COOLANT LCC 100 may be refilled in order to maintain the low conductivity and prevent damage to high-voltage systems.
Yes, but no strongly ionic additives as in classic engine coolants. We use weakly ionic inhibitors that prevent corrosion and do not increase electrical conductivity.

These additives form stable protective layers on aluminum and copper without releasing free ions - this keeps conductivity permanently low and protects the system in the long term.