Battery Assembly with Dynamic Converter for Surgical Devices
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Solution Overview
Problem
Surgical devices require varying levels of energy for different operations, and portable battery packs need to adapt to these requirements while ensuring safety and efficient charging from diverse power sources.
Innovation Solution
A battery assembly with a converter and controller that adjusts energy output based on device requirements, using a buck-boost converter and safety features like impedance adjustment and pulse-width-modulation to ensure safe and efficient energy delivery, and includes a programmable configuration file for settings based on battery characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a portable battery pack is used to power surgical devices, then mobility and portability are improved, but the ability to meet varying energy requirements of different surgical devices deteriorates
Solution Approach 1:
The battery pack employs a controller that dynamically adjusts converter parameters based on real-time communication with the surgical device. The controller modifies impedance values and converter settings to match the specific energy requirements of different surgical devices, enabling a single portable battery pack to adapt to varying power demands without sacrificing mobility.
Solution Approach 2:
The system changes electrical parameters (impedance, voltage, current) of the battery pack output based on the connected surgical device's requirements. The controller receives device information via communication interface and adjusts converter parameters accordingly, allowing the battery pack to provide appropriate energy levels for different surgical applications while maintaining portability.
2Use of energy by moving object
If the battery pack supplies high power for long periods, then energy delivery capability is improved, but thermal management and safety risks worsen
Solution Approach 1:
The battery pack incorporates temperature sensors that continuously monitor thermal conditions within the battery pack. The controller receives temperature feedback and adjusts power output accordingly, reducing power delivery when thermal thresholds are approached. This feedback mechanism enables the system to maintain high energy delivery capability while preventing dangerous temperature rises through dynamic power adjustment.
Solution Approach 2:
The system implements preemptive thermal management by monitoring temperature trends and adjusting power output before dangerous overheating occurs. The controller anticipates thermal buildup during high-power operation and proactively reduces power delivery or activates cooling measures, preventing thermal runaway rather than merely responding to extreme conditions.
3Adaptability or versatility
If the battery pack is designed for universal compatibility with various surgical devices, then adaptability is improved, but device complexity increases
Solution Approach 1:
The battery pack employs a universal converter design that can operate in multiple modes (buck converter, boost converter, or bypass mode) depending on the connected device's requirements. The controller automatically selects the appropriate operating mode based on device characteristics received through the communication interface, enabling a single battery pack design to serve multiple surgical devices without requiring device-specific hardware variants.
Solution Approach 2:
The controller automatically configures the converter parameters and impedance values based on information received from the connected surgical device. The system performs self-diagnosis and self-adjustment without requiring manual configuration or complex external control, reducing the operational complexity for users while maintaining universal compatibility across different surgical devices.
4Reliability
If safety features are added to prevent emergency conditions, then reliability is improved, but device complexity and cost increase
Solution Approach 1:
The safety monitoring functions are integrated into the existing controller that manages converter operation. The same controller that adjusts power output based on device requirements also monitors temperature, current, and voltage parameters for safety. This merging of control and safety functions eliminates the need for separate safety monitoring hardware, reducing overall system complexity while maintaining comprehensive safety coverage.
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 battery assembly effectively adapts to different energy demands of surgical devices and ensures safe operation by dynamically adjusting energy output and incorporating safety measures, enabling efficient charging from various power sources.
Implementation Method 1
a converter (120) configured to convert an internal energy of the battery pack (110)
Implementation Method 2
the controller adjusts an impedance value of the resistor to configure the converter into a buck converter or a boost converter
Implementation Method 3
the converter includes an h-bridge with an inductor as a crossbar
Implementation Method 4
the controller generates a pulse-width-modulation (PWM) signal to adjust a duty cycle of the h-bridge
Data Source
AI summary
A battery assembly includes a battery pack configured to supply energy to a load having a required energy, a housing enclosing the battery pack therein, a converter configured to convert an internal energy of the battery pack, and a controller configured to adjust a parameter of the converter based on information received from the load via a communication interface such that the converter converts the internal energy to the energy required by the load, wherein the converted internal energy is supplied to the load as the supplied energy.