Battery Equalization Circuit With Autonomous Auxiliary Power Control
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Solution Overview
Problem
Conventional battery equalization circuits in energy storage systems lack independent power consumption management, leading to high system losses and low flexibility due to unified control by a battery control unit, resulting in inefficient power consumption during standby or static states.
Innovation Solution
Incorporating a power consumption management circuit within the battery equalization circuit that autonomously controls the auxiliary source's power-on/off through a main control chip, allowing for flexible power management and reducing system losses by activating the auxiliary source only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery control unit controls power-on/off of the battery equalization circuit in a unified manner, then the system has centralized control capability, but independent power consumption management of battery packs cannot be implemented and flexibility is low
Solution Approach 1:
The patent divides the centralized control function into distributed control units, where each battery pack is equipped with its own control unit capable of independent decision-making. This segmentation enables each battery pack to autonomously manage its power consumption while maintaining overall system coordination, directly resolving the contradiction between centralized control and independent management.
Solution Approach 2:
The control system transitions from a static centralized control mode to a dynamic distributed control mode. Each battery pack's control unit can dynamically adjust its power consumption management strategy based on real-time battery status and system requirements, enhancing adaptability while maintaining system coherence.
2Loss of energy
If the battery equalization circuit remains in power-on state to ensure responsiveness, then the system has high readiness, but power consumption increases during standby or static states
Solution Approach 1:
The control unit implements periodic monitoring and status-checking mechanisms rather than maintaining continuous full-power operation. The system can transition between active and low-power states periodically, reducing overall power consumption while ensuring the system can quickly respond when needed through scheduled status assessments.
Solution Approach 2:
Each battery pack's control unit autonomously manages its own power state transitions, determining when to enter low-power mode and when to activate based on its own status and system needs. This self-service capability eliminates the need for continuous centralized control signaling, reducing power consumption while maintaining system reliability.
3Productivity
If the auxiliary source is continuously powered on to supply power to the main control chip, then the control chip remains always operational, but system losses increase during idle periods
Solution Approach 1:
The control unit performs preliminary status assessment and predictive decision-making to determine when power activation is necessary. By anticipating upcoming operations or status changes, the system can activate power supply in advance only when needed, avoiding continuous operation during definitely idle periods while maintaining control responsiveness.
Solution Approach 2:
The system dynamically changes the power supply parameter (on/off state) based on operational conditions. The auxiliary source transitions between powered and unpowered states according to predefined thresholds and system status, optimizing the balance between control responsiveness and energy loss by adjusting the power parameter rather than maintaining a fixed state.
Data Source
AI summary
The power consumption management circuit receives an activation signal, and controls at least one switch transistor to be turned on, so that the auxiliary source is powered on, and the auxiliary source supplies power to the main control chip. After the auxiliary source is powered on, the main control chip sends a maintenance signal to the power consumption management circuit, and the power consumption management circuit controls at least one switch transistor to be turned on, so that the auxiliary source continuously operates. When determining that an energy equalization requirement is completed or determining that a low power consumption mode needs to be entered, the main control chip sends a cut-off signal to the power consumption management circuit, and the power consumption management circuit controls at least one switch transistor to be turned off, so that the auxiliary source stops operating.