Wireless Coil Battery Preheating for Low-Temperature Charging
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Solution Overview
Problem
Batteries struggle with charging efficiency and safety at low temperatures, leading to slow charging speeds and potential explosions due to enhanced chemical activity, polarization, and crystallization.
Innovation Solution
A method where a wireless coil generates heat to increase the battery temperature by controlling the charging power supply to supply power to the wireless coil when the battery temperature is below a certain value, allowing charging to proceed safely and efficiently once the temperature reaches a suitable level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is charged at low temperature, then the charging process can be initiated, but the charging speed is slow and battery performance and life are affected
Solution Approach 1:
The patent applies preliminary action by heating the battery before charging to raise the temperature to an optimal range. The heating module activates first to warm the battery, and only after the temperature reaches the predetermined range does the charging process begin. This pre-heating action resolves the contradiction by preparing the battery in advance, enabling both charging capability and acceptable charging speed.
2Ease of operation
If the battery is charged at low temperature, then the charging process can be initiated, but battery safety is compromised due to enhanced chemical activity and potential explosion
Solution Approach 1:
The patent applies preliminary action by heating the battery before charging to raise the temperature to an optimal range. The heating module activates first to warm the battery, and only after the temperature reaches the predetermined range does the charging process begin. This pre-heating action resolves the contradiction by preparing the battery in advance, enabling both charging capability and acceptable charging speed.
Solution Approach 2:
The patent applies preliminary anti-action by counteracting the harmful effects of low temperature through pre-heating. The heating module provides thermal energy to the battery before charging, preventing the enhanced chemical activity and crystallization that would otherwise occur at low temperatures. This preliminary counter-action eliminates the safety risks while maintaining charging capability.
3Reliability
If a heating method is used to increase battery temperature, then charging safety and efficiency are improved, but energy consumption increases
Solution Approach 1:
The patent applies feedback by implementing temperature detection and control mechanisms. A detection module continuously monitors the battery temperature, and based on the detected temperature, the control module adjusts the heating power or stops heating when the optimal temperature range is reached. This feedback control ensures heating is applied only when necessary and at the minimum required level, improving safety and efficiency while minimizing energy consumption.
4Productivity
If the wireless coil is used for heating, then heating efficiency and energy transfer are improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the wireless coil to serve multiple functions: it can perform wireless power transmission during normal operation and switch to heating mode when battery temperature is low. The same coil structure and control circuitry are used for both functions, eliminating the need for separate heating components. This multi-functionality approach improves heating efficiency while avoiding additional device complexity.
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
This method ensures safe and efficient charging by heating the battery through the wireless coil, reducing charging time and preventing battery damage or explosion at low temperatures.
Implementation Method 1
controlling the charging power supply to supply power to a wireless coil, so that the wireless coil generates heat
Data Source
AI summary
This application discloses a charging method and an apparatus. An example apparatus (e.g., an electronic device) includes at least one processor, a wireless coil, and a battery. The at least one processor is configured to determine that a charging port is connected to a charging port. The at least one processor is further configured to, when a temperature of the battery is lower than a first temperature value, control the charging power supply to supply power to the wireless coil to cause the wireless coil to generate heat that increases the temperature of the battery. The at least one processor is further configured to, when the temperature of the battery is higher than a second temperature value, control the charging power supply to charge the battery, wherein the second temperature value is greater than or equal to the first temperature value.