The surprising factor that drives up the cost of batteries for hybrid cars

The cost of batteries for hybrid cars is often a subject of attention, particularly in a rapidly evolving automotive market. While 100% electric cars are becoming an increasingly viable alternative due to the decreasing cost of batteries, the price of batteries for hybrid vehicles remains surprisingly high. This situation raises questions about the underlying reasons that drive prices up, despite significant technological advances.

Why is the cost of hybrid batteries so high?

One of the first factors contributing to the rising costs of batteries for hybrid vehicles is their technical design. These batteries, which are often smaller than those of electric models, must incorporate a wide range of features while maintaining high performance. This technical requirement translates to higher production costs. Indeed, hybrid batteries are not only evaluated based on their capacity, but also on how they will integrate into a hybrid powertrain that includes an internal combustion engine.

For example, the cost of the battery for a plug-in hybrid vehicle can reach up to 20,000 euros for a capacity of 20 kWh. This contrasts sharply with batteries of fully electric vehicles, which, for a capacity of 65 kWh, can be much more economical in terms of cost per kWh. This disparity primarily results from the characteristics of batteries for hybrid vehicles, which must juggle energy requirements and lower performance.

Small size, big challenges

The cost per kilowatt-hour of rechargeable hybrid batteries is often three times that of fully electric vehicle batteries. This can be explained by the cost/capacity ratio favoring larger batteries. The larger the batteries, the lower their cost per unit of energy. In the automotive sector, this is particularly true for models favored by brands like Tesla, Nissan, and Ford, which leverage economies of scale.

On the other hand, manufacturers need to invest in different technologies to enhance the performance of hybrid batteries, resulting in a higher cost per kWh due to various technical factors, including:

• A more complex architecture to integrate the thermal engine.
• Increased power requirements to support 100% electric operation.
• Specific materials, less available in large quantities.

Raw materials under pressure

The cost of hybrid batteries is also influenced by the price of essential materials such as lithium, cobalt, and nickel, which are at the heart of modern battery manufacturing. In recent years, their demand has skyrocketed, leading to a surge in prices. The geopolitical situation and supply chain issues, particularly from countries like the Democratic Republic of Congo for cobalt, add a layer of complexity to this issue.

These three materials account for approximately 60% of the total cost of batteries. Thus, a rise in their prices in the market can have a direct and instantaneous impact on the cost of hybrid batteries. Furthermore, technological advancements in recycling and resupplying these materials are still evolving, but they do not yet fully compensate for the increase in raw material prices.

A growing demand

Battery technologies have made significant progress, which has not gone without consequence on the relationship between production and cost. In 2024, as demand continues to increase, some experts estimate that the supply of raw materials could become a critical factor in the production strategy of automotive manufacturers, including Toyota, BMW, and Volkswagen.

It is essential for companies to adopt a proactive approach to anticipate these cost variations. Here are some measures they might consider:

• Investing in new sources of supply to reduce dependence on rare materials.
• Developing cost management tools that account for fluctuations in raw materials.
• Innovating alternative materials to lessen dependence on critical resources.

The role of economies of scale

Economies of scale play a crucial role in determining the cost of batteries in the automotive industry. Many brands, such as Hyundai, Kia, and Chevrolet, have developed large-scale production capabilities, allowing them to reduce unit manufacturing costs, especially for larger batteries.

In contrast, hybrid models, which take a less voluminous approach, can quickly see their production cost per unit soar. Production plants in Europe, for example, are still struggling to achieve sufficient efficiency levels to allow for significant price reductions. This completely disrupts the economics of the hybrid vehicle sector, which suffers from a lack of scale compared to purely electric cars.

Case Study: Electric Trucks in China

An interesting contrast can be found in the electric truck industry in China, where production is already expanding rapidly. Due to high demand, truck manufacturers can produce at lower costs per unit. This means that they not only produce faster but also at a significantly lower cost for batteries, thus enhancing their competitiveness compared to hybrid models in other regions.

The lessons learned from the Chinese experience could influence the future development of the industry in Europe. To succeed in reducing the cost of hybrid models, European players will need to find ways to increase their production levels while maintaining strong quality standards.

• Collaboration between manufacturers to share best practices.
• Creating partnerships to develop efficient facilities.
• Investing in innovative production technologies.

Technological advancements, a lever to reduce costs

The development of new battery technologies represents a strategic focus for the automotive industry. In this perspective, research on solid-state batteries, such as those conducted by Stellantis and other manufacturers, opens up promising avenues. These batteries, which are safer and offer better energy density, could allow costs to be reduced while improving performance. Indeed, these innovations could significantly change the game in the market.

While studies indicate that solid-state battery technology could reduce the cost of lithium-ion batteries by at least 50% within a few years, the path remains fraught with challenges regarding their integration into vehicles. Many manufacturers, such as Audi and BMW, continue to invest heavily in uncovering the best solutions that align with consumer expectations while maintaining their leadership position in the market.

The future of the automotive industry

In 2024, it is crucial for the industry to move towards technological innovations that promote sustainability. Efforts in material recovery, battery recycling, and the search for new alternative materials are at the heart of strategies to be developed. A report from https://www.gt-automotive.fr/recyclage-batteries-voitures/ highlights the importance of a circular approach to ensure the sustainability of the industry.

• Research on solid-state batteries for better energy density.
• Merging technologies to accommodate new sustainable materials.
• Partnerships with companies for recycling old batteries.

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