Battery Heater Device with Dynamic Power Control for Uniform Heating
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Solution Overview
Problem
Existing battery heater devices take a long time to heat batteries uniformly due to low heat generation at the central cells, leading to inefficient quick-heating performance and a complex structure that requires adjustments based on vehicle and battery module configurations.
Innovation Solution
A battery heater device with a first heater part for outer cells and a second heater part for inner cells, controlled by a power controller that reduces power to the second heater part after initial startup to achieve uniform heating and improve quick-heating performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If heater wire densities are adjusted to provide high-heat-generating area for end portions and low-heat-generating area for central part, then uniform temperature distribution is achieved, but total heat generation amount decreases and quick-heating performance deteriorates
Solution Approach 1:
The patent applies dynamics by making the heating system adjustable and controllable. The controller dynamically adjusts the power supply to different heater parts based on real-time temperature feedback from temperature sensors. This allows the system to transition from a static fixed-density heater wire arrangement to a dynamic controlled heating process, resolving the contradiction between uniform temperature distribution and quick-heating performance.
Solution Approach 2:
The patent implements periodic action through controlled power supply cycles. The controller periodically adjusts power distribution to the first and second heater parts based on temperature conditions. By applying power in controlled periods rather than continuously at fixed levels, the system achieves both uniform heating and improved overall heating speed.
2Stability of the object's composition
If heater wire densities are adjusted according to battery module structure and vehicle configuration, then uniform heating is achieved, but device structure becomes complex
Solution Approach 1:
The patent applies segmentation by dividing the heater into multiple independent parts (first heater part for outer cells, second heater part for inner cells) that can be controlled separately. This segmentation allows each part to be optimized independently through power control rather than requiring complex physical restructuring of the entire heater, reducing device complexity while maintaining uniform heating capability.
Solution Approach 2:
The patent changes the operational parameters (power supply levels) of existing heater parts rather than physically reconfiguring the heater structure. By adjusting electrical parameters through the controller based on temperature feedback, the system achieves adaptive uniform heating without modifying the physical structure, thereby avoiding increased device complexity.
3Stability of the object's composition
If low heat generation is applied to central cells to prevent overheating, then temperature uniformity improves, but total heating efficiency decreases
Solution Approach 1:
The patent implements feedback control by using temperature sensors to continuously monitor the temperature of battery cells and adjusting the power supply to heater parts accordingly. This feedback mechanism ensures that the central cells receive appropriate heat without overheating, while outer cells receive sufficient heat, thereby maintaining temperature uniformity and optimizing overall heating efficiency simultaneously.
Solution Approach 2:
The patent dynamically changes the power supply parameters to different heater parts based on real-time temperature conditions. By adjusting electrical parameters (power levels) rather than fixing them, the system optimizes energy usage efficiency while maintaining temperature uniformity, resolving the contradiction between preventing central cell overheating and maintaining overall heating efficiency.
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
The device enhances quick-heating performance and achieves uniform temperature distribution across battery cells using a simple arrangement, reducing power waste and maintaining battery performance.
Implementation Method 1
a first heater part which heats cells positioned at an outer side in the battery; a second heater part which heats cells positioned at an inner side in the battery
Data Source
AI summary
A battery heater device which heats a battery with a plurality of cells mounted on a vehicle comprises a first heater part which heats cells positioned at an outer side in the battery; a second heater part which heats cells positioned at an inner side in the battery; and a controller which controls power to be supplied to the first and second heater parts; wherein the controller reduces the power supplied to the second heater part at a predetermined timing after start of the power supply to the first and second heater parts, thereby improving quick-heating performance of the battery and heating the battery more uniformly with use of simple arrangement.