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Independent test of the battery health in electric vehicles

Periodic Reporting for period 2 - AVILOO bcheck (Independent test of the battery health in electric vehicles)

Reporting period: 2021-07-01 to 2022-09-30

Electric cars are a major factor in the strategy to tackle the environmental challenges that we face today.

Therefore, more and more electric cars are available, and consequently the number of electric cars meant to be sold as used vehicles increases continuously.
The battery is the most important and most expensive part of an electric vehicle, and its importance increases especially on the used-car market. The initial capacity of a battery decreases during its usage. The so called “State of Health” is one of the most commonly used parameters of battery condition. In order to make a proper purchase decision on buying a used electric car, one must know the State of Health of the electric car’s battery.

Determining the State of Health of a battery is complex and requires a deep know how. In order to accurately calculate the State of Health of a battery, environmental influences (such as temperature) and technical capabilities of the car (e.g. discharge rate) need to be taken into consideration.
The State of Health that you migth get from OEM is often not accurate and not reliable.

With the availability of AVILOO’s accurate and user-friendly AVILOO PREMIUM Battery Test, everybody is now able to perform and independent, objective and accurate State of Health Test of any electric car. This allows a transparent market for used electric cars to develop which forms the basis of the breakthrough of electromobility in general.
To summarize, the project’s overall objective is to make a battery test available that can be used easily and cheap in order to determine the State of Health of the battery of an electric vehicle.
During the first reporting period several improvements to both hard- and software were carried out.

A lot of effort was especially put into developing a Cell Test Bench to obtain mathematical models of different battery cells that are used in common electric vehicles. These models are used for the State-of-Health determination of electric cars’ batteries under varying environmental influences.
In order to make the battery test more user-friendly a test app was created and integrated into the AVILOO Battery Data Platform. The app guides the potential customer through the battery test step by step.
Other actions carried out within the interval of the first periodic report were focused on reducing the test duration required for accurately determining the State of Health.

Further advancements were made during the interval of the second and final reporting period.
The necessity to finish the battery test in one continuous discharge was eliminated by introducing the DISTRIBUTED FULL CYCLE, which allows for pauses within conducting the battery test, i.e. the AVILOO b:check.
Furthermore, the predecessor to the b:ckeck quick test, the so called AVILOO FLASH test has been fully developed. The AVILOO FLASH test is not able to calculate the "State-of-Health" of a battery yet, however, it is able to see the current levels of a large variety of battery signals and to identify significant deviations with these signals, and to detect defects of battery cells.
The b:ckeck quick test has also been fully developed, however, although it is completed, at its current state it is applicable to only a limited amount of vehicle models. The necessary broadening of this vehicle coverage is already taking place by the daily process of vehicle-data gathering trough the active commercial use of the AVILOO b:check and AVILOO FLASH test.

The AVILOO products are offered commercially both to the B2B and B2C sectors.

The sales' efforts in the fields of B2B have lead to partnerships with prominent names in the automotive industry, such as:

Norsk Elbilforening (NO)
Viking Kontroll (NO)
Automitve Alliance (NLD)

The sales' efforts on the B2C front have lead to more than 1500 b:ckecks being sold only in 2022 so far.
WE are more than happy and proud to state that the AVILOO Battery Tests that have been developed under the existing Grant agreement are absolutely unique in Europe and according to our knowledge also globally. There are no comparable products available in Europe up to today, and as far as we know also globally. We have already served thousands of consumers who performed a battery test with our products throughout Europe. Some of them received a new battery from the respective OEM just on the basis of our battery certificate. We even managed to detect heavy safety risks in some electric cars, advising consumers to stop driving the respecitive cars and take them to the garage as quickly as possilbe, maybe even preventing serious accidents from happening.
What can be seen on this picture is the AVILOO Box alongside with the generated Test Certificate