Electric Bicycle Modular Battery Position Detection
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Solution Overview
Problem
Existing electric bicycles with modular traction batteries cannot determine the frame position of specific batteries for charging, as the central multi-battery management module lacks the ability to identify their location on the bicycle frame.
Innovation Solution
Equipping each traction battery with electronic acceleration, spatial position, and geomagnetic field sensors that transmit sensor data to a central management module, which compares these data with stored reference values to determine the battery's frame position, allowing the module to inform the driver or service center about the battery's position for charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If multiple modular traction batteries are mounted on the e-bike frame, then the energy capacity and operating duration are improved, but the ability to identify and manage the specific position of each battery deteriorates
Solution Approach 1:
The patent introduces an intermediary system consisting of sensors (accelerometers, gyroscopes, magnetometers) and a management module that mediates between the multiple batteries and the control system. This intermediary infrastructure enables the central system to indirectly determine battery positions through sensor data without requiring direct communication or identification mechanisms at each battery location.
Solution Approach 2:
The patent replaces mechanical or electrical identification systems (such as physical tags, switches, or complex wiring schemes) with a sensor-based detection system. Instead of using mechanical means to identify battery positions, the system uses inertial sensors and magnetic field sensors to detect and determine the spatial orientation and position of each battery module.
2Measurement precision
If sensor-based position detection is implemented, then the position identification accuracy is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies universal sensor modules that serve multiple functions: they detect battery position, determine orientation, and provide spatial information for the management system. The same sensor infrastructure (accelerometers, gyroscopes, magnetometers) is used across all battery positions, creating a standardized, multi-functional detection system that reduces overall complexity despite the added measurement capabilities.
Solution Approach 2:
The patent uses identical sensor modules at each battery position, creating copies of the same detection infrastructure. This standardization allows the system to determine positions of multiple batteries using the same hardware template, simplifying manufacturing and system integration while maintaining high measurement precision across all locations.
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
Enables accurate and unambiguous identification of battery frame positions on the electric bicycle, eliminating the need for expensive presence detectors and providing a cost-effective solution for localizing and charging multiple traction batteries.
Implementation Method 1
Each traction battery has an electronic accelerometer, an electronic orientation sensor (e.g., a gyroscope), and/or an electronic geomagnetic field sensor
Implementation Method 2
Each traction battery has an electronic accelerometer, an electronic orientation sensor (e.g., a gyroscope), and/or an electronic geomagnetic field sensor
Implementation Method 3
Each traction battery has an electronic accelerometer, an electronic orientation sensor (e.g., a gyroscope), and/or an electronic geomagnetic field sensor
Data Source
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AI summary
The invention relates to an electric bicycle comprising a bicycle frame, an electric traction drive (30) attached to the bicycle frame, at least two modular traction batteries (50) attached to the electric bicycle at different frame positions (P1, P5), a central electronic multi-battery management module (36) that determines the state of charge of the traction batteries (50), and signal connections (BUS) through which the traction batteries (50) are informally connected to the multi-battery management module (36). Each traction battery (50) has an electronic accelerometer (S1), an electronic position sensor (S2), and/or an electronic geomagnetic field sensor (S3). A frame position memory (38) is associated with the multi-battery management module (36), in which typical traction battery sensor reference values are stored for all traction battery frame positions (P1, P5).An overall charge state information interface (40) is provided, which outputs the charge state of the traction batteries (50) together with their frame position (P1, P5).