Battery Module Self-Heating System Using Own Voltage
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Solution Overview
Problem
Secondary battery modules in devices are affected by external temperatures, leading to performance degradation, and existing solutions require additional power supplies to raise temperatures, increasing costs and complexity.
Innovation Solution
A temperature-raising system for battery modules that utilizes the battery's voltage to heat up using a heater assembly with an aluminum pattern and heat-resistant PET films, connected through ultrasonic welding, and a controller to manage temperature, ensuring efficient heating without external power and preventing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If additional external power supply or charging device is used to raise battery temperature, then temperature control capability is improved, but device complexity and production cost increase
Solution Approach 1:
The battery module uses its own voltage to drive the heater assembly for self-heating, eliminating the need for external power supplies or charging devices. The controller manages the heating process using the battery's inherent electrical energy, achieving temperature control without additional complex external systems.
Solution Approach 2:
The battery voltage serves dual purposes: normal operation power and heating energy source. The same electrical energy that powers the device during normal operation is also utilized to heat the battery when needed, making the system more versatile and reducing the need for separate heating systems.
2Temperature
If additional external power supply or charging device is used to raise battery temperature, then temperature control capability is improved, but production cost increases
Solution Approach 1:
The battery module uses its own voltage to drive the heater assembly for self-heating, eliminating the need for external power supplies or charging devices. The controller manages the heating process using the battery's inherent electrical energy, achieving temperature control without additional complex external systems.
3Power
If heater assemblies are connected in parallel, then heating efficiency is improved, but system reliability decreases due to breakdown risks
Solution Approach 1:
The heating system is divided into multiple independent heater assemblies that are connected in series. Each assembly contains its own heater element and can be independently controlled, allowing the system to maintain reliability while achieving sufficient heating capacity through multiple units working together.
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 solution maintains optimal battery performance by raising the temperature using the battery's voltage, reducing production costs and preventing performance degradation due to low temperatures, while ensuring safe and efficient operation.
Implementation Method 1
turns on the heater using a voltage of the battery module
Implementation Method 2
The heater cover and the heater may be connected through ultrasonic welding
Data Source
AI summary
Disclosed is a temperature-raising system for a battery module, which includes a heater assembly including a heater and a heater cover. The temperature-raising system includes: a battery module that includes one or more batteries; two or more heater assemblies that are attached to the battery module using a fixing means; a temperature sensor that is connected to the battery module or to the heater assemblies and senses a temperature of the battery module; and a controller that receives a preset target temperature, senses the temperature of the battery module using the temperature sensor, and turns on or off the heater using a voltage of the battery module, based on the preset target temperature and the temperature of the battery module that is sensed by the temperature sensor, the preset target temperature being a temperature that the battery module is targeted to reach.