Wearable Battery Pack With Through-Hole Heat Dissipation Channel
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Solution Overview
Problem
Previous battery packs for portable electric tools have low output voltage, leading to insufficient power and poor endurance, and increasing the number of cells to enhance voltage results in increased size, weight, and internal heat, making them uncomfortable to wear and inefficient for high-power tools.
Innovation Solution
A wearable battery pack design featuring a battery pack body with a heat dissipation channel that penetrates from one side to the other, allowing airflow between the user's back and the battery pack to reduce heat transfer, combined with a locking mechanism for easy detachment and a compact, efficient arrangement of battery cells for high energy capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of battery cells is increased to raise output voltage, then power and endurance are improved, but size and weight increase making it uncomfortable to wear
Solution Approach 1:
The battery pack is divided into multiple individual battery cells (e.g., five 18V cells connected in series to achieve 90V output). This segmentation allows the design to achieve high voltage through series connection of lighter individual cells rather than using fewer, heavier high-voltage cells, thereby improving power while controlling weight.
2Power
If the number of battery cells is increased to raise output voltage, then power and endurance are improved, but heat generation increases reducing comfort
Solution Approach 1:
Dividing the battery system into multiple separate cells creates natural spacing between them, allowing heat to dissipate from each cell individually rather than accumulating in a dense configuration. This segmentation strategy enables high power output while managing thermal generation through distributed cell arrangement.
Solution Approach 2:
The patent introduces air as a heat dissipation medium by designing air channels and ventilation paths between and around the battery cells. This intermediary approach uses airflow to actively remove heat generated during charging and discharging, preventing temperature buildup while maintaining high power output capability.
3Power
If the number of battery cells is increased to raise output voltage, then power and endurance are improved, but the battery pack size increases affecting flexibility
Solution Approach 1:
The battery pack uses multiple compact cylindrical cells (18V, 1800mAh capacity) arranged in a series configuration to achieve high voltage (90V total). This segmented approach with standardized cell dimensions allows efficient space utilization, achieving high power output while maintaining a compact overall pack volume that does not significantly increase with voltage escalation.
4Ease of manufacture
If traditional battery pack design is used, then manufacturing is simple, but heat dissipation is insufficient causing user discomfort
Solution Approach 1:
The patent introduces air channels and ventilation structures as intermediary heat dissipation pathways between the battery cells and the external environment. These air channels serve as thermal conduits that actively transport heat away from the battery assembly during charging and discharging operations, significantly improving heat dissipation efficiency while maintaining a straightforward manufacturing process using conventional housing and channel integration techniques.
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 wearable battery pack provides a high output voltage of at least 56V with a compact design, effective heat dissipation to prevent user discomfort, and easy detachment for maintenance, enhancing the usability and comfort of carrying high-power tools.
Implementation Method 1
The battery pack body is provided with a heat dissipation channel, extending from one side of the battery pack body to the opposite side
Implementation Method 2
an elastic member, which is arranged between the front housing and the rear housing, configured to seal the joint of the front housing and the rear housing
Data Source
AI summary
A wearable battery pack includes a battery pack body, a battery cell and a housing accommodating a battery cell and a wearable device capable of wearing so that the battery pack body at least be worn on a user's back. The battery pack body has a heat dissipation channel running through one side of the battery pack body to the opposite side. The side of the battery pack body which is penetrated by the heat dissipation channel is located between the back of the user and the other side when the user carries the battery pack body.