Battery Alternator Connection Control for Torque Optimization
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Solution Overview
Problem
The permanent connection between a vehicle's battery and alternator leads to overconsumption and overpollution, as well as unavailability of engine torque, due to unnecessary electrical energy conversion, which is detrimental to engine efficiency.
Innovation Solution
A method that dynamically controls the electrical connection between the battery and alternator by interrupting and reestablishing the connection based on engine torque demand, battery voltage, and other conditions, using a relay controlled by a software system to optimize energy use and reduce torque taken from the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the alternator is permanently connected to the battery, then the battery is continuously recharged, but this causes overconsumption of mechanical energy, increased fuel consumption, and unnecessary pollution
Solution Approach 1:
The patent applies dynamics by making the electrical connection between the alternator and battery controllable rather than permanent. A control system dynamically switches the connection state based on real-time operating conditions including engine torque demand, battery charge state, and vehicle speed, allowing the system to adapt between connected and disconnected states to optimize energy efficiency while maintaining battery charging reliability when needed
2Reliability
If the alternator is permanently connected to the battery, then electrical energy is continuously converted, but this results in unavailability of engine torque for propulsion
Solution Approach 1:
The system dynamically adjusts the alternator-battery connection based on engine torque demand. When high torque is required for propulsion, the connection is interrupted to make full engine torque available. When torque demand is low or during regenerative braking conditions, the connection is established to maintain electrical power supply stability, thus resolving the contradiction between torque availability and power supply reliability
3Device complexity
If the alternator is permanently connected to the battery, then the electrical system is simple, but this leads to overconsumption and cannot adapt to different operating phases
Solution Approach 1:
The patent implements dynamics by introducing a controllable switching mechanism that adapts the alternator-battery connection to different operating phases including vehicle start-up, acceleration, cruising, and braking. The control system monitors parameters such as engine torque demand, battery voltage, and vehicle speed to intelligently switch between connected and disconnected states, providing adaptability while maintaining relatively simple system architecture
Solution Approach 2:
The system changes operational parameters by switching the connection state based on varying operating conditions. During high torque demand phases, the connection is interrupted; during low demand or regenerative braking, the connection is established. This parameter switching enables the system to adapt to different operating phases while maintaining overall system simplicity
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 approach increases engine torque, reduces fuel consumption, and optimizes engine performance by adjusting the torque drawn by the alternator according to vehicle phases, such as heavy loads and braking, while preserving battery health and reducing pollution.
Implementation Method 1
the alternator taking mechanical energy during the rotation of the engine by transforming it into electrical energy
Data Source
Figure 1~2
Figure 3
AI summary
The invention pertains to a method of monitoring a battery (1) and an alternator (4) and their electrical connections, the battery (1) comprising a positive and a negative terminal and the alternator (4) supplying a current regulator (3) disposed between them while exhibiting, on one side, a first and a second electrical connection respectively to the positive and negative terminals and, on the other side, electrical connections with the alternator (4), the battery (1) exhibiting a level of charge and being recharged by the alternator (4) via the regulator (3). The second electrical connection between the negative terminal of the battery (1) and the regulator (3) is interrupted upon a demand for motor torque above a predetermined value of torque under a first condition that the effective voltage of the battery (1) is greater than a predetermined minimum voltage, then reestablished for a motor torque demand below the predetermined value.