Dual-Battery Thermal Management via Screen State Control
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Solution Overview
Problem
Dual-battery terminals face heat accumulation issues during charging and discharging, leading to security risks and abnormal operations due to limited space for battery temperature detection modules, which are susceptible to heat interference and require costly additional hardware.
Innovation Solution
A dual-battery charging and discharging method that uses state identifiers for the display screens to control battery charging and power supply based on the working states of the screens, allowing flexible management of charging and discharging currents to prevent heat superposition and reduce thermal risks without additional hardware costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If dual batteries are used to increase battery capacity, then standby time is extended, but heat accumulation occurs during charging and discharging
Solution Approach 1:
The terminal device divides the battery system into two separate battery modules (first battery and second battery), each with independent charging and discharging control. This segmentation allows independent thermal management of each battery, preventing heat superposition that would occur with a single battery system, while collectively providing extended standby time through combined capacity.
2Duration of action of moving object
If battery capacity is increased to extend standby time, then device space requirements increase, but lightening and thinning design constraints limit space
Solution Approach 1:
The terminal device adopts a segmented battery layout where the first battery is disposed in the first terminal body and the second battery is disposed in the second terminal body. This spatial segmentation allows the battery capacity to be distributed across multiple locations, increasing total capacity without requiring a single large battery space, thus accommodating lightening and thinning design constraints.
3Reliability
If temperature detection modules are added to monitor battery heat, then thermal safety is improved, but device cost increases and space is consumed
Solution Approach 1:
The state detection module is designed with multi-functionality, serving both as a screen state detector and a battery thermal safety monitor. By reusing the same hardware resource for multiple purposes, the system achieves thermal safety monitoring without adding dedicated temperature detection modules, thus avoiding increased device cost and complexity.
4Use of energy by moving object
If charging and discharging operations are performed simultaneously on dual batteries, then power efficiency is improved, but heat superposition causes security risks
Solution Approach 1:
The system implements dynamic control of battery charging and discharging operations based on real-time screen state detection. The control module dynamically adjusts battery operations to prevent simultaneous charging and discharging that would cause heat superposition, while maximizing power efficiency when safe to do so. This dynamic adjustment resolves the contradiction between power efficiency and thermal safety.
Data Source
AI summary
A dual-battery charging and discharging method is described to be used for a dual-screen terminal. The method includes: obtaining a state identifier of the first display screen and a state identifier of the second display screen; determining whether the dual-screen terminal is in a charging state; in response to determining that the dual-screen terminal is in a charging state, controlling the first battery and the second battery to be charged according to the state identifier of the first display screen and the state identifier of the second display screen; and in response to determining that the dual-screen terminal is not in a charging state, controlling whether the first battery and the second battery supply power to the dual-screen terminal according to the state identifier of the first display screen and the state identifier of the second display screen.