Battery Discharge Circuit With Current-Regulated Switch Branch
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Solution Overview
Problem
The current method of discharging electric vehicle batteries by feeding their energy back to the power grid is costly and inefficient.
Innovation Solution
A battery discharging circuit comprising a resistor configuration branch, current sampling branch, switch branch, and signal amplification branch, controlled by a controller, which regulates the discharging current through a switch branch and resistor configuration, allowing for efficient and stable discharge without the need for grid feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If battery energy is fed back to the power grid for discharging, then the battery can be discharged, but the cost is relatively high
Solution Approach 1:
The patent extracts the battery discharging function from the grid-dependent system and creates a standalone discharging circuit. The circuit includes a switch branch with controllable switch, a resistor configuration branch with multiple resistors, and a control branch that independently regulates battery discharge without requiring grid connection, thereby eliminating feedback costs and energy losses.
Solution Approach 2:
The discharging circuit is designed to be self-regulating through the control branch that monitors battery parameters and automatically adjusts the switch branch control signal. The system serves itself by internally managing the discharging process using the resistor configuration branch to limit current and the control branch to regulate operation, without external grid intervention.
2Ease of manufacture
If a simple discharging circuit is used, then the cost is reduced, but the discharge stability and speed may be compromised
Solution Approach 1:
The discharging circuit is segmented into three functional branches: a resistor configuration branch with multiple resistors for current limiting, a switch branch with controllable switch for discharge control, and a control branch for regulation. This segmentation allows each branch to perform its specific function efficiently, achieving stable and quick discharge while maintaining reasonable circuit simplicity.
Solution Approach 2:
The control branch dynamically adjusts the control signal to the switch branch based on battery discharge status, enabling the circuit to adapt its discharge rate in real-time. The resistor configuration branch provides dynamic current limiting capabilities, allowing the simple circuit to maintain discharge stability and speed control throughout the discharge process.
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 circuit enables quick and stable battery discharge with reduced costs, maintaining efficiency and stability by regulating the discharging current through a simple circuit structure.
Implementation Method 1
a current sampling branch... is used for sampling a discharging current of the battery and outputting a sampling signal
Implementation Method 2
a signal amplification branch... is used for receiving the sampling signal and the voltage signal and outputting a regulation signal
Implementation Method 3
a switch branch... is used for receiving the regulation signal and regulating a turn-on degree of the switch branch based on the regulation signal; the discharging current of the battery has a positive correlation with the turn-on degree of the switch branch
Data Source
AI summary
A battery discharging circuit includes a resistor configuration branch, a current sampling branch, a switch branch, a signal amplification branch and a controller. The resistor configuration branch is connected between a battery and the switch branch, the resistor configuration branch is connected with the controller. The current sampling branch is connected between the battery and the switch branch, and the current sampling branch outputs a sampling signal. The controller is connected with the signal amplification branch, and the controller outputs a voltage signal corresponding to a target discharging current of the battery. The signal amplification branch is connected between the switch branch and the switch branch, and the signal amplification branch outputs a regulation signal based on the sampling signal and the voltage signal. The switch branch regulates a turn-on degree of the switch branch based on a regulation signal. The battery is discharged through the switch branch.