Integrated Current Measuring Relay Device
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Solution Overview
Problem
Existing relay control technologies rely on external control devices like BMS, leading to potential circuit damage and increased manufacturing costs due to separate current measuring sensors, and may not effectively prevent high current issues.
Innovation Solution
Integration of a current measuring sensor with the relay, including a comparator and switch to directly measure and control the relay operation based on preset current limits, independent of external control devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a current measuring sensor is separately attached to measure current and control relay operation, then the relay can be controlled based on current measurement, but the relay cannot preferentially operate to protect the circuit when high current flows, and manufacturing costs increase
Solution Approach 1:
The patent integrates the current measuring sensor directly into the relay device, combining the sensor and relay into a single unified component. This integration allows the relay to directly measure current through its internal sensor and preferentially operate to protect the circuit when high current is detected, while reducing manufacturing costs by eliminating separate sensor attachment requirements.
2Measurement precision
If a current measuring sensor is separately attached to measure current, then current measurement is achieved, but manufacturing costs of the circuit increase
Solution Approach 1:
The current measuring sensor is integrated into the relay device structure, combining measurement and control functions in one component. This reduces manufacturing costs by eliminating separate sensor attachment steps and assembly operations, while maintaining accurate current measurement capability through the integrated sensor.
Solution Approach 2:
The integrated relay device performs multiple functions: it acts as both a control relay and a current measuring sensor. This multi-functionality eliminates the need for separate dedicated current sensing components, thereby reducing overall manufacturing costs while preserving measurement precision.
3Ease of operation
If external control device like BMS controls relay operation, then centralized control is achieved, but the relay cannot preferentially operate to prevent circuit damage when high current flows
Solution Approach 1:
The integrated current measuring sensor continuously monitors current flow in real-time, enabling the relay to detect high current conditions and preferentially operate to protect the circuit before damage occurs. This preliminary detection and response capability ensures circuit protection without waiting for external control device intervention.
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 reduces manufacturing costs, allows independent operation, and prevents circuit damage by automatically cutting off the relay when high currents are detected, ensuring user safety.
Implementation Method 1
a current sensor unit may sense a current input to a washer motor unit
Data Source
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AI summary
Provided is a current measuring relay device capable of measuring a current flowing in a relay and controlling an operation of the relay based on the measured result, without depending on a control operation of an external control device such as a battery management system (BMS) by integrating the relay with a current measuring sensor.