Slave Battery Management Apparatus Power Extraction
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Solution Overview
Problem
Conventional battery management systems require external power sources, leading to inaccurate readings and increased complexity due to load changes affecting the power supply, and they lack efficiency in power management within the battery pack.
Innovation Solution
A slave battery management apparatus that uses a sensor and voltage converter to generate operating power from the battery itself, allowing for efficient data transmission and operation mode control based on sensed physical quantities, eliminating the need for an external power source and reducing system weight and complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external power source is used to supply power to battery management apparatuses, then the battery management apparatuses can operate, but the system complexity increases due to additional wire harnesses and power management components
Solution Approach 1:
The invention extracts the power supply function from the external power source and relocates it to the battery pack itself. The battery management apparatus now draws power directly from the battery it manages, eliminating the need for separate external power sources and their associated wire harnesses, thereby reducing system complexity while maintaining operational capability
Solution Approach 2:
The battery pack serves multiple functions: it acts as both the energy storage device being managed and the power source for the management apparatus. This multi-functionality eliminates the need for dedicated external power sources, reducing the number of components and simplifying the overall system architecture
2Ease of operation
If an external power source supplies power to battery management apparatuses, then the apparatuses can function, but measurement precision deteriorates due to load changes affecting the power supply
Solution Approach 1:
By extracting the power supply source from the external 12V battery and relocating it to the monitored battery pack, the invention eliminates the interference between power supply load changes and measurement accuracy. The battery management apparatus now operates on power from the same battery it monitors, removing the source of measurement errors
Solution Approach 2:
The battery pack serves itself by providing power to its own management apparatus. This self-service arrangement ensures that the power supply and the monitored object are unified, eliminating the interference that occurs when an external power source with varying load demands is used
3Ease of operation
If multiple battery management apparatuses are connected to separate external power sources, then each apparatus can operate independently, but the overall system weight increases due to multiple power sources and wire harnesses
Solution Approach 1:
The invention merges the power supply function into the battery pack itself, allowing multiple battery management apparatuses to share the same power source (the battery pack). This eliminates the need for multiple separate external power sources and their associated wire harnesses, significantly reducing system weight while maintaining independent operation of each management apparatus
Solution Approach 2:
The battery pack serves as a universal power source for all battery management apparatuses in the system. This multi-functional approach replaces multiple dedicated power sources with a single integrated solution, reducing overall system weight and component count
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 enables accurate battery monitoring and management without external power, reducing system weight and complexity while avoiding load-induced power supply changes, enhancing efficiency and accuracy in battery state determination and operation.
Implementation Method 1
a filter configured to filter an output voltage of the battery
Implementation Method 2
a first converter configured to convert the filtered output voltage into a direct current (DC) voltage
Implementation Method 3
a smoother configured to remove a ripple component from the DC voltage
Implementation Method 4
a second converter configured to adjust a magnitude of a ripple-free DC voltage
Data Source
AI summary
A slave battery management apparatus includes a sensor configured to sense a physical quantity of a battery; a voltage converter configured to receive an output physical quantity from the battery, to convert the output physical quantity into an operating physical quantity corresponding to a physical quantity to operate a controller, and to output the operating physical quantity to the controller; and a controller configured to use the operating physical quantity as an operating power and to transmit battery data by using the operating physical quantity, wherein the battery data is generated based on the sensed physical quantity.