Battery Management Circuit Start-Up Apparatus for Dead Battery Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery management circuits cannot operate normally when the rechargeable battery is in a dead state, leading to the need to detach and charge the battery externally, which is inconvenient.
Innovation Solution
A start-up apparatus comprising a transformer, switch circuit, control circuit, and rectifier circuit that supplies power to the battery management circuit when the battery module is in a dead state, allowing the circuit to maintain normal operation and enable direct charging without external special devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery management circuit operates solely on battery power, then the circuit structure remains simple, but the circuit cannot operate when the battery is depleted
Solution Approach 1:
The battery management circuit is designed to accept and process multiple power sources: it can operate on battery power during normal conditions and switch to external power source input when the battery is depleted. This multi-functionality ensures the circuit remains operational across different power supply scenarios without requiring separate circuits for each mode.
Solution Approach 2:
A power supply switch circuit is introduced as an intermediary component between the battery, external power source, and the battery management circuit. This mediator intelligently selects and connects the appropriate power source based on battery status, enabling seamless transition between power sources and ensuring continuous operation of the management circuit.
2Ease of operation
If the battery is detached for external charging, then the battery can be charged when depleted, but the operation becomes inconvenient and time-consuming
Solution Approach 1:
The battery management circuit automatically detects when the battery is depleted and activates the external power source input circuitry without user intervention. The system self-manages the power source switching and charging process, allowing the battery to be recharged in-situ while remaining installed in the electronic device, thereby eliminating the need for manual detachment and reattachment operations.
3Adaptability or versatility
If the battery management circuit lacks external power input capability, then the circuit design remains simple, but the system cannot charge the battery when depleted
Solution Approach 1:
The power supply system is segmented into distinct functional modules: a battery power input circuit, an external power source input circuit, and a power supply switch circuit. Each module handles a specific aspect of power management, allowing for independent design optimization and simplified troubleshooting while providing comprehensive power supply flexibility through the combination of these modular components.
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 the battery management circuit to operate normally even when the battery module is depleted, allowing for direct charging of the battery module without detaching it, thus providing a convenient charging method compared to conventional practices.
Implementation Method 1
The transformer includes a primary winding, an auxiliary winding, and a secondary winding
Implementation Method 2
The rectifier circuit is coupled to the secondary winding of the transformer. The rectifier circuit supplies power to the battery management circuit
Data Source
AI summary
A start-up apparatus for a battery management circuit and a battery management system having the same are provided. The start-up apparatus for the battery management circuit includes a transformer, a switch circuit, a control circuit, and a rectifier circuit. The transformer includes a primary winding, an auxiliary winding, and a secondary winding. A first terminal of the primary winding is coupled to a first external power path. A first terminal of the switch circuit is coupled to a second terminal of the primary winding, and a second terminal of the switch circuit is coupled to a second external power path. The control circuit is coupled to the auxiliary winding for receiving power and controls a conduction state of the switch circuit. The rectifier circuit is coupled to the secondary winding of the transformer and supplies power to the battery management circuit.