Backpack Battery Coupling for Multi-Tool Garden Power and Cooling
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Solution Overview
Problem
Backpack garden tools typically require separate battery packs for each tool, increasing costs and labor intensity due to complex disassembly processes, and conventional blower designs lack effective cooling, leading to reduced tool duration and efficiency.
Innovation Solution
A coupling device that allows a single backpack battery pack to power multiple tools via a detachable coupling unit, featuring a flexible wire connection and a locking mechanism for rapid battery replacement, along with a blower design that incorporates air flow for cooling and water baffles to prevent corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate backpack battery pack is equipped for each garden tool, then each tool can be powered independently, but the device cost increases and the battery pack disassembly process becomes more complex
Solution Approach 1:
The patent designs a universal battery pack interface that can be used across multiple different garden tools (blowers, hedge trimmers, string trimmers). The standardized coupling device with uniform electrical contacts and mechanical mounting features allows a single battery pack design to power various tools, eliminating the need for tool-specific battery packs and simplifying the disassembly process while maintaining reliable power supply.
2Adaptability or versatility
If a standardized coupling device is used to allow one battery pack to power multiple tools, then versatility improves and cost reduces, but the connection and disconnection operations become more frequent
Solution Approach 1:
The coupling device is segmented into distinct functional components: a mounting portion for mechanical attachment and an electrical contact portion for power transmission. This segmentation allows the battery pack to be quickly mounted or dismounted by simply engaging or disengaging the coupling device without complex manipulation, making frequent battery replacements convenient while maintaining universal compatibility across different tools.
3Power
If the backpack blower operates at high power, then the blowing performance improves, but the circuit board heats up quickly and the working temperature becomes high
Solution Approach 1:
The patent extracts the electronic control components (circuit board, control electronics) from the high-power motor assembly and places them in a separate location within the backpack battery pack. This spatial separation removes the heat-generating motor from direct contact with temperature-sensitive electronic components, allowing the blower to operate at high power while the circuit board remains in a cooler environment, thus preventing overheating and extending component lifespan.
Data Source
AI summary
The disclosure relates to a field of garden tools, specifically relates to a coupling device and a backpack garden tool system. The coupling device includes a first coupling unit and a second coupling unit. The first coupling unit is configured to be detachably connectable with a power supply output end of a backpack battery pack. The second coupling unit is connected with the first coupling unit through a flexible wire, and the second coupling unit is configured to be detachably connectable with a power input end of a first garden tool. The disclosure realizes a functional expansion of a backpack blower through the coupling device.