3results about How to "Reduce the absolute value" patented technology

The application discloses a neodymium-iron-boron permanent magnet and a preparation method thereof. The neodymium-iron-boron permanent magnet is in the shape of a cuboid, the height direction of the neodymium-iron-boron permanent magnet is the orientation direction, and the height of the neodymium-iron-boron permanent magnet is greater than or equal to 8 mm. The content of heavy rare earth elements at the top corner of the neodymium-iron-boron permanent magnet is greater than 0.65 wt%, the content of heavy rare earth elements at the edge of the neodymium-iron-boron permanent magnet is greater than 0.43 wt%, the content of heavy rare earth elements at the outer layer of the neodymium-iron-boron permanent magnet is greater than or equal to 0.22 wt%, and the content of heavy rare earth elements at the core of the neodymium-iron-boron permanent magnet is greater than or equal to 0.003 wt%. The content of heavy rare earth elements at the top corner is greater than that at the edge, the content of heavy rare earth elements at the edge is greater than that at the outer layer, and the content of heavy rare earth elements at the outer layer is greater than that at the core. The neodymium-iron-boron permanent magnet has a large size in the orientation direction and good heat demagnetization resistance.

The present application relates to a liquid crystal alignment agent which satisfies at least one selected from the group consisting of (I) and (II). (I): contains a polymer (A) having a repeating unit selected from the group consisting of a repeating unit represented by the following formula (1-a) and a repeating unit represented by the following formula (1-i), and an epoxy compound (B) represented by the following formula (2). (II): contains a reaction product of the polymer (A) and the epoxy compound (B).

The invention relates to a method and a controller for operating a motor vehicle designed as a fuel cell vehicle. The motor vehicle has a high-voltage system, an electric machine, a high-voltage energy store and a fuel cell system, the method having the following steps: When the high-voltage energy store is operated with an operating power which is greater in absolute terms than a continuous power and smaller in absolute terms than a maximum permissible peak power, a period of time is detected in which the high-voltage energy store is operated with the electrical power. When the detected period of time reaches a maximum permissible period of time, the maximum permissible peak power of the high-voltage energy store is reduced by a time gradient in absolute terms to the continuous power. When the difference between the maximum permissible peak power and the operating power reaches a threshold value, the electrical operating power of the fuel cell system is increased in a traction mode and reduced in a coasting mode, wherein the electrical operating power of the high-voltage energy store is reduced in absolute terms to less than the continuous power in order to provide the electrical power requirement of the motor vehicle in total.