Heatable Insole With Protective Circuit And Remote Control
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Solution Overview
Problem
Existing electrically heatable shoe soles lack flexibility in temperature control and safety features, with conventional batteries experiencing power loss at low temperatures and posing risks due to short circuits and mechanical damage.
Innovation Solution
The electrically heatable insole incorporates a remote control device for flexible temperature control, a protective circuit to prevent excessive heat and short circuits, and uses lithium-ion or polymer batteries with mechanical protection, along with Minimelf resistors and a control circuit for continuous heating regulation, ensuring safety and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional batteries are used in the insole, then the device is simple to manufacture, but the batteries lose power at low temperatures and pose safety risks due to short circuits and mechanical damage
Solution Approach 1:
The patent implements a protective circuit that anticipates potential hazards such as short circuits and excessive heat generation. This circuit proactively monitors battery status and automatically disconnects the battery from the heating element when dangerous conditions are detected, preventing safety incidents before they occur. The protective circuit serves as a preventive safety mechanism that cushions against potential failures.
2Measurement precision
If the heating process is continuously controlled, then temperature regulation is precise, but the device complexity increases
Solution Approach 1:
The patent employs a control circuit that continuously monitors the temperature of the heating element and adjusts the power supply accordingly. When the temperature reaches a predetermined threshold, the control circuit automatically reduces or stops power supply to prevent overheating. This feedback mechanism enables precise temperature control while maintaining relatively simple circuit implementation through automatic regulation rather than complex manual control systems.
3Use of energy by moving object
If lithium-ion or polymer batteries are used to achieve high energy density, then the power capacity increases, but the risk of explosion and mechanical damage increases
Solution Approach 1:
The patent implements a protective circuit that anticipates potential hazards such as short circuits and excessive heat generation. This circuit proactively monitors battery status and automatically disconnects the battery from the heating element when dangerous conditions are detected, preventing safety incidents before they occur. The protective circuit serves as a preventive safety mechanism that cushions against potential failures.
Solution Approach 2:
The patent converts the inherent safety risks of lithium-ion and polymer batteries into manageable conditions through the protective circuit. By monitoring voltage, current, and temperature parameters, the circuit identifies dangerous conditions and takes corrective action, effectively transforming the potential harm of high-energy-density batteries into a controlled and safe operating state. The high energy density becomes a benefit rather than a liability.
4Ease of operation
If the insole uses a remote control device for heating, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The patent replaces manual mechanical control of the heating element with an automated control circuit that responds to remote control signals. The remote control device communicates wirelessly with the insole, allowing the user to adjust heating parameters without physical contact with the heating element or its controls. This substitution of mechanical control with electronic/remote control enhances ease of operation while keeping the system relatively simple through standardized communication protocols.
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 provides flexible temperature control, enhanced battery performance at low temperatures, and improved safety features, including protection against short circuits and mechanical damage, while maintaining comfort and efficiency.
Implementation Method 1
a heating electrode (20) which comprises resistor faces (17)
Implementation Method 2
the energy store is formed by at least one rechargeable lithium-ion cell or by at least one rechargeable lithium-ion polymer cell
Implementation Method 3
a rechargeable battery with an inductive charging coil and rectifier
Data Source
AI summary
An electrically heatable in sole may include at least one sole base body and one covering layer, at least one heating electrode, at least one rechargeable battery that is electrically connected to the heating electrode, and a control circuit for controlling the heating process and the charging of the battery. Heating electrodes, rechargeable batteries and a control circuit are arranged in the base body of the sole and/or between the base body and the covering layer. The control circuit includes a remote control device for starting and stopping the heating process, and a protection circuit for disconnecting the rechargeable batteries in the event of an error.