Demonstrating technological strength, Huawei issued three heavyweight patents related to new energy vehicles in a row

Lithium Grid News: Since January this year, Huawei has published three heavyweight patents related to new energy vehicles.

In late January, Huawei Technologies Co., Ltd. announced an automotive patent with the application number 'CN112248801A' and the patent name 'Reducer, Powertrain and Vehicle'.

The patent abstract shows that this application embodiment provides a reducer, a powertrain and a vehicle. The reducer can be applied to electric vehicles/electric vehicles, pure electric vehicles, hybrid vehicles, and extended-range electric vehicles. For vehicles, plug-in hybrid vehicles, new energy vehicles, etc., the reducer realizes shifting without power shock by canceling the setting of the synchronization ring and using the control of the rotation angle and speed, shortening the shifting stroke and synchronization time, and saving This reduces the cost, and solves the problems of long gear shifting time caused by the use of the synchronizer ring friction to achieve synchronous shifting and the impact of the gear shifting process.

On February 2, Huawei announced another lithium battery technology patent named 'Silicon-carbon composite material and its preparation method and lithium-ion battery. The main purpose is to provide a silicon-carbon composite material, which includes a core and a carbon layer coated on the surface of the core, which can prolong the service life of the battery.

The abstract shows that the embodiments of the present invention provide a silicon-carbon composite material, including a core and a carbon layer coated on the surface of the core, wherein the core includes a graphite skeleton and an amorphous structure filled in the graphite skeleton For carbon and silicon materials uniformly distributed in amorphous carbon, the silicon-carbon composite material only has a pore structure with a pore diameter less than or equal to 50 nm, and there is no pore structure with a pore diameter greater than 50 nm.

The silicon-carbon composite material has a small internal pore size, which can effectively reduce the contact area between the silicon material and the electrolyte, reduce the occurrence of side reactions, and extend the battery life; at the same time, the silicon material is evenly dispersed around the graphite skeleton. Without agglomeration, the graphite skeleton can effectively alleviate the volume expansion and contraction of the silicon material, and improve the structural stability and energy density of the composite material. The embodiment of the present invention also provides a preparation method of the silicon-carbon composite material and a lithium ion battery containing the silicon-carbon composite material.

On February 12, Huawei published another patent entitled 'A Powertrain and Electric VehicleApril 17, 2020.

The patent abstract shows that this application provides a powertrain and an electric vehicle. It is reported that the powertrain and electric vehicle provided by this application can make full use of the external cooling surface of the heat exchanger, improve the utilization efficiency of the heat exchanger, and improve the heat dissipation of the motor controller. At the same time, the structure is more compact and space is saved.