Company patents
WEICHAI POWER CO., LTD.
WEICHAI POWER CO., LTD. exhibits a highly diversified, yet seemingly sporadic, patent strategy across various sectors, with no single category dominating its portfolio. Surprisingly, despite its core business, categories like Vehicle Powertrain Arrangement and Batteries & Fuel Cells represent only 5.7% and 3.8% of its portfolio respectively, both showing significant declines (YoY -100.0% for Vehicle Powertrain Arrangement in 2025 and Batteries & Fuel Cells in 2024), suggesting a shifting focus away from these areas, or at least a highly inconsistent filing pattern.
Patent Trend by Technology Area
Yearly patent publications since 2023
Product themes
Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.
53 US filings (since 2023) · 8 categories · 9 themes
Addresses the design and arrangement of electric motors, transmissions, and associated power electronics (like inverters) to form integrated drive units for hybrid or electric vehicles, including specific components like busbars and electric brakes.
Control systems for managing vehicle braking and maintaining a stationary state, including brake pedal actuation sensing, automatic brake hold functions, and coordination with parking brakes.
Techniques and mechanisms to optimize the performance, energy consumption, and operational range of compressors in refrigeration and heat pump systems, often involving variable control of compression parameters like volume ratio or speed.
Methods and components for optimizing the performance, efficiency, and control of electric motors, inverters, and power converters within electric vehicle and hybrid vehicle drivetrains.
Application of protective layers to improve the durability and longevity of components by enhancing resistance to wear, oxidation, or chemical degradation in demanding operational environments.
Transmissions designed to provide a continuous range of gear ratios between fixed limits, often employing ball-planetary, toroidal, or belt-pulley mechanisms, and including their control systems for stable operation in various directions.
Novel designs and configurations for heat exchangers that improve heat transfer efficiency, compactness, or enable specific phase change or separation processes within refrigeration and heat pump cycles.
Systems designed to manage the temperature of multiple components in electric or hybrid vehicles, such as batteries, electric motors, power electronics, and the passenger cabin, often using shared or interconnected cooling/heating circuits.
Design and control strategies for improving the efficiency, stability, and operational flexibility of refrigerant circuits, including component integration, flow management, phase separation, and pressure regulation.
Patents
Showing 1-4 of 4
Continuously Variable Transmissions