Battery Pack Terminal Reuse for Status Communication
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Solution Overview
Problem
Conventional battery packs with additional communication terminals require a corresponding increase in the number of terminals for portable devices, leading to cost and space challenges, as well as difficulties in integrating additional components within the limited space.
Innovation Solution
A battery pack and portable device configuration where the temperature detection terminal is also used as a communication terminal, utilizing an interface circuit to enable communication between the battery pack and portable device without increasing the number of terminals, allowing for temperature detection and status information exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a communication terminal is added to the battery pack for status information transmission, then the portable device can receive battery status information, but the number of terminals in both the battery pack and portable device must be increased
Solution Approach 1:
The patent makes the temperature detection terminal serve dual functions: it detects temperature during charging and simultaneously transmits battery status information to the portable device. By enabling this terminal to perform multiple roles, the invention eliminates the need for adding a separate communication terminal, thus resolving the contradiction between information transmission capability and terminal count.
2Loss of information
If additional terminals are added to both battery pack and portable device, then communication capability is improved, but manufacturing cost increases
Solution Approach 1:
The invention reuses the existing temperature detection terminal for both temperature sensing and status information communication purposes. This multi-functional approach avoids the need to manufacture additional terminals and associated connection structures, thereby reducing manufacturing costs while still achieving reliable status information transmission between the battery pack and portable device.
3Loss of information
If more terminals are incorporated into the battery pack and portable device, then communication functionality is enhanced, but the space required for component integration increases
Solution Approach 1:
The patent utilizes the existing temperature detection terminal for dual purposes: temperature monitoring during charging and status information transmission to the portable device. By making this terminal multi-functional, the invention eliminates the need for additional physical terminals and their associated connection structures, thereby reducing the space required for component integration within the limited battery pack and portable device housing.
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 communication and temperature detection between the battery pack and portable device without altering the specifications of either device, maintaining the existing terminal count and ensuring reliable charging control while managing battery status effectively.
Implementation Method 1
a thermistor connected between the first external terminal and the third external terminal
Data Source
AI summary
A portable device is disclosed that includes a charge control circuit configured to control charging of a secondary battery included in a battery pack, the secondary battery being configured to supply power to the portable device; a temperature detection terminal at which the temperature of the secondary battery is detected from a temperature detection part of the battery pack; positive and negative power terminals to be connected to the battery pack; a control circuit configured to control the operation of the portable device; and an interface circuit connected between the temperature detection terminal and each of an input terminal of the charge control circuit and an input terminal of the control circuit, in which a signal detected at the temperature detection terminal is fed to each of the charge control circuit and the control circuit through the interface circuit.