Pure lithium positive electrode: an innovative breakthrough in cell construction
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Solid cell: double the cruising range
Hayward / Stuttgart - At the 2015 Frankfurt International Motor Show, Bosch presented a new generation of electric vehicle battery technology and plans to achieve mass production within five years. "By technical know-how and continuous investment, Bosch is committed to making breakthroughs in the development of electric vehicle battery technology," said Dr. Volkmar Dunard, Chairman of the Bosch Group Board of Directors. The acquisition of Seeo, a start-up battery company located in Hayward, near Silicon Valley, USA, will be an important step for Bosch to achieve this goal. As a result, in addition to the current Bosch progress in the field of battery technology, the company has mastered the key technologies and patents of solid lithium-ion batteries.
“Solid cells will become a major technological breakthrough in the field of electrification,†said Dr. Dunnar. “In a large multinational company like Bosch, disruptive innovations have collided with a wider range of systems knowledge. And get enough financial support." At present, Bosch's goal is to double the energy density of the battery by 2020 and reduce the price by half. With the advent of new solid-state batteries, Bosch believes that the achievement of this goal is expected to exceed expectations, the energy density of the battery can be increased more than twice, and the price can be further reduced. The current maximum mileage of electric vehicles is 150 kilometers, which will increase to 300 kilometers by then, no need to charge in the middle, and will be more economical.
Strategic expansion of existing battery technology research
The acquisition of Seeo is in line with Bosch's strategic deployment in the field of electric vehicles. As an integrated technology solutions provider in the field of electrification, Bosch is able to offer a wide range of products and systems including drive motors, power electronics controllers and power batteries. At present, Bosch has successfully completed 30 powertrain electrification projects. Bosch engineers are working hard to continually optimize and improve existing technologies, making it possible for electric vehicles to enter thousands of households. Bosch expects that by 2025, about 15% of the world's new cars will be at least hybrids, most of which are plug-in hybrids. In order to achieve this goal, in 2014, Bosch teamed up with GS Yuasa and Mitsubishi Group to form a joint venture called Lithium Energy and Power, which is dedicated to the development of a new generation of more powerful lithium-ion batteries. Seeo's technology will further enrich and expand the results that Bosch and its Japanese partners have achieved in battery research and development. In this way, Seeo's groundbreaking technology will integrate with Bosch's systems and expertise, GS Yuasa's core technology and the extensive industrial base of Mitsubishi Group.
Bosch has the first batch of new battery samples
For many years, automakers and technology suppliers have been working to develop power batteries with longer lasting performance and more powerful performance. The battery technology is the cornerstone of the battery system. The battery system of the electric vehicle is composed of a number of connected batteries, so the battery core is the key to the electric vehicle power system. The performance of an energy storage system can be improved in many ways. For example, in cell chemistry, the materials used to make the positive and negative electrodes largely determine the energy storage capacity of the battery. One of the reasons for the limited storage capacity of existing lithium-ion batteries is that the graphite content in the positive electrode is high. With curing technology, Bosch can produce battery positive electrodes made of pure lithium, which can greatly increase battery capacity. In addition, this new type of cell does not contain ionic liquids and is therefore less susceptible to combustion. “Pure lithium cathode technology represents an innovative breakthrough in battery cell construction,†Dr. Dunnell said. Based on Seeo's battery technology, Bosch already has the first batch of new battery samples that are optimized for system safety and mileage to better meet the high standards of the automotive industry.
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