Current Sensor with Integrated Voltage Detection Terminal
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Solution Overview
Problem
Existing current sensors for vehicles lack effective detection of battery voltage, which is crucial for monitoring battery health and efficiency, especially with increasing electric component consumption.
Innovation Solution
A current sensor with a battery-terminal integrated design, incorporating a shunt resistor and additional detection terminals to measure both electric current and voltage, along with a fault determination mechanism, allowing for simultaneous detection of battery voltage and current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional current sensor is used to detect battery current, then current detection is achieved, but battery voltage detection capability is lacking
Solution Approach 1:
The battery terminal part is designed to serve multiple functions: it provides electrical connection for current detection through the shunt resistor and simultaneously enables voltage detection through the third detection terminal. This multi-functional design allows the same component to perform both current and voltage sensing without requiring separate dedicated structures.
Solution Approach 2:
The voltage detection function is merged into the existing battery terminal structure by adding a third detection terminal to the terminal part that is already connected to the battery post. This combines current detection (through shunt resistor) and voltage detection (through terminal potential) into a single integrated sensor unit.
2Measurement precision
If additional detection terminals are added to detect battery voltage, then voltage detection capability is improved, but device complexity increases
Solution Approach 1:
The battery terminal part is designed to serve multiple functions: it provides electrical connection for current detection through the shunt resistor and simultaneously enables voltage detection through the third detection terminal. This multi-functional design allows the same component to perform both current and voltage sensing without requiring separate dedicated structures.
Solution Approach 2:
The battery terminal part itself serves as the voltage sensing point by providing a third detection terminal that directly measures the potential at the terminal. The terminal structure leverages its own electrical connection to the battery post to provide voltage detection capability without requiring external voltage sensing components.
3Measurement precision
If separate current and voltage detection systems are used, then detection accuracy is maintained, but system complexity and space requirements increase
Solution Approach 1:
The voltage detection function is merged into the existing battery terminal structure by adding a third detection terminal to the terminal part that is already connected to the battery post. This combines current detection (through shunt resistor) and voltage detection (through terminal potential) into a single integrated sensor unit.
Solution Approach 2:
The battery terminal part is designed to serve multiple functions: it provides electrical connection for current detection through the shunt resistor and simultaneously enables voltage detection through the third detection terminal. This multi-functional design allows the same component to perform both current and voltage sensing without requiring separate dedicated structures.
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
Enables precise and accurate detection of both electric current and voltage, improving battery monitoring and fault determination, thus enhancing vehicle power management and efficiency.
Implementation Method 1
a shunt resistor conductively connected to the battery terminal part via a joint part, the shunt resistor including a first detection terminal and a second detection terminal for detecting an electric current
Implementation Method 2
the battery terminal part includes a third detection terminal for detecting a voltage of the battery between the joint part and the battery post
Data Source
AI summary
The current sensor includes a battery terminal part that has electrical conductivity and is fastened to a battery post constituting a negative electrode of a battery, and a shunt resistor that is conductively connected to the battery terminal part via a joint part, the shunt resistor including a first detection terminal and a second detection terminal for detecting an electric current. The battery terminal part includes a third detection terminal for detecting a voltage of the battery between the joint part and the battery post. As a result, the current sensor can properly detect a voltage of the battery together with an electric current.