Battery Pack Mode Receiver for Multi-Level Discharge Control
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Solution Overview
Problem
Existing battery packs for high-power applications, such as wireless cleaners and electric vehicles, lack efficient control mechanisms to manage discharge currents based on operational modes, leading to increased complexity and manufacturing costs.
Innovation Solution
A battery pack with a battery manager that includes a mode receiver and a main controller, utilizing transistors and Zener diodes to classify signals from an external device and control discharge currents accordingly, allowing for different operational modes with reduced input terminals and simplified circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple input terminals are used to receive signals for different operational modes, then the battery pack can control discharge currents for different modes, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies universality by enabling a single input terminal to perform multiple functions through the mode receiver circuit. The mode receiver uses transistors and Zener diodes to interpret different voltage levels from one terminal, allowing the battery pack to distinguish between multiple operational modes (low power, medium power, high power) without requiring separate input terminals for each mode. This reduces device complexity while maintaining the ability to control discharge currents for different operational modes.
2Adaptability or versatility
If multiple input terminals are used to receive signals for different operational modes, then the battery pack can control discharge currents for different modes, but the manufacturing cost increases
Solution Approach 1:
The mode receiver circuit enables one input terminal to serve multiple purposes by detecting different voltage levels corresponding to different operational modes. This universal approach reduces the number of components required, thereby lowering manufacturing costs while maintaining full adaptability for controlling discharge currents across all operational modes.
3Device complexity
If the battery pack uses a simple control mechanism without mode classification, then the device complexity is reduced, but the ability to control discharge currents for different operational modes is lost
Solution Approach 1:
The mode receiver acts as an intermediary between the single input terminal and the discharge current control mechanism. It receives the voltage signal from the terminal, classifies the operational mode using transistors and Zener diodes, and then enables the main controller to appropriately control the discharge current. This intermediary approach maintains circuit simplicity while achieving sophisticated mode-based current control.
4Measurement precision
If multiple transistors and Zener diodes are used for mode classification, then the precision of signal classification is improved, but the device complexity increases
Solution Approach 1:
The mode receiver circuit segments the voltage signal range into distinct intervals using transistors and Zener diodes, each corresponding to a specific operational mode. By dividing the voltage range and assigning different transistor/diode combinations to different segments, the circuit achieves precise signal classification. This segmentation approach enables accurate mode detection while keeping the circuit structure systematic and manageable.
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 efficient control of discharge currents based on operational modes, reducing manufacturing costs and complexity while maintaining performance across various modes of operation.
Implementation Method 1
a first Zener diode electrically connected between the second transistor and the input terminal, and a second Zener diode electrically connected between the third transistor and the input terminal
Data Source
AI summary
A battery pack includes a battery and a battery manager. The battery includes a plurality of battery cells. The battery manager includes a mode receiver that receives signals from an electronic device through an input terminal. The signals are indicative of respective modes of operation of the electronic device.