BMW joins EC Power to develop low-temperature lithium-ion battery technology that can increase the temperature of vehicle batteries?

Oct 21, 2019   Pageview:186

BMW announced a patent agreement on low-temperature lithium-ion battery technology and ECPower to jointly develop battery technology to increase the temperature of vehicle-mounted batteries. It is known that this technology can realize rapid charging of electric vehicles in low-temperature environment without using external power supply. BMW has signed an Intellectual Property Agreement with ECPower of the United States on All-Climate-Battery (ACB), a low-temperature lithium-ion battery technology.

When the ambient temperature is below freezing point, the operation of most lithium-ion batteries will be affected, which is undoubtedly a problem for electric vehicles and hybrid vehicles. To this end, the car companies need to equip the above vehicles with additional heaters to raise the temperature of their on-board batteries.

ECPower's patented technology creates an automatic heating function that heats batteries at low temperatures, enabling them to operate normally below freezing point. In addition, it takes only a few seconds from heating to optimum operating condition (opTImal operation condiTIon), which can either heat batteries in advance or enable the function in driving.

The fast automatic heating function can also realize the rapid charging of electric vehicles in low temperature environment, because the battery core uses custom materials, and does not need to use external power supply.

The automatic heating mechanism can create an electrochemical interface. It takes only 20 seconds to heat the internal temperature of the battery from minus 20 to 0, and only 30 seconds to heat the internal temperature of the battery from minus 30 to 0, consuming 3.8% and 5.5% of the battery capacity, respectively.

The company uses AutoLion software and computer-aided design to develop new batteries and energy storage devices. It also owns a battery factory in Pennsylvania. The plant currently produces thousands of prismatic and soft-pack batteries, which can be used to verify the feasibility of mass production and in-vehicle testing.

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