Motorized Wheel Hub Thermal Path and Battery Access
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Solution Overview
Problem
Current electric conversion kits for vehicles like bicycles are complex and time-consuming to install due to separate components requiring multiple tools and steps, with bulky battery packs and wiring harnesses.
Innovation Solution
A method for accessing and maintaining a contoured battery within an electrically motorized wheel without disassembling the electric motor or control system, using a hub casing assembly with a removable access door and non-circular contour for easy battery replacement and thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate components (battery pack, control system, electric motor) are mounted on different parts of the bicycle, then the system can be assembled with modular components, but the installation becomes complex and time-consuming requiring multiple tools and steps
Solution Approach 1:
The patent combines the battery pack, control system, and electric motor into a single integrated wheel assembly. The battery is positioned within the wheel hub, the motor is integrated into the hub structure, and the control system is consolidated, eliminating the need for separate mounting locations and reducing installation complexity while maintaining modular adaptability.
2Use of energy by moving object
If a wiring harness is used to provide electrical power from the battery pack to the electric motor, then electrical connections can be established, but the system becomes more complex with additional components and installation steps
Solution Approach 1:
The patent extracts and eliminates the wiring harness by implementing direct electrical contacts between the battery and motor through the integrated wheel hub structure. The battery terminals are positioned to make direct contact with motor terminals, removing the intermediate wiring harness component and simplifying the electrical power transmission system.
3Ease of repair
If traditional battery access methods are used requiring disassembly of motor and control system, then the battery can be accessed for maintenance, but the maintenance process becomes complex and time-consuming
Solution Approach 1:
The patent segments the wheel assembly into distinct accessible sections, providing a specific access path to the battery that does not require disassembly of the motor or control system. The battery is positioned within the hub structure with dedicated access points, allowing independent battery removal and installation while keeping the motor and control system intact.
4Use of energy by moving object
If bulky battery packs are used to provide sufficient power, then the energy capacity is adequate, but the overall size and weight of the wheel assembly increases
Solution Approach 1:
The patent nests the battery pack within the wheel hub structure, utilizing the internal volume of the hub to house the battery cells. The battery is integrated into the hub's internal cavity, eliminating the need for external battery mounts and reducing the overall wheel assembly dimensions while maintaining adequate energy capacity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the installation and maintenance of electric motorized wheels by allowing access to batteries and thermal management without disassembly, reducing complexity and installation time.
Implementation Method 1
defining the path such that the path contacts the at least one component, further defining the path such that the path contacts a hub shell assembly of the electrically motorized wheel thereby conducting heat from the at least one component to the hub shell assembly
Data Source
AI summary
A method of thermal management for an electrically motorized wheel, the method can include defining a thermally conductive path from at least one component, the at least one component becoming heated during operation of the electrically motorized wheel, providing the path with a thermally conductive material and further defining the path such that the path contacts the at least one component, further defining the path such that the path contacts a hub shell assembly of the electrically motorized wheel thereby conducting heat from the at least one component to the hub shell assembly.