Battery Cluster Precharge Circuit for High-Voltage Protection
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Solution Overview
Problem
Energy storage apparatuses with multiple batteries connected in series and parallel face damage from excessively high voltage or current when a high voltage is applied, as existing technologies lack effective regulation mechanisms.
Innovation Solution
An energy storage apparatus with a control circuit, multiple battery clusters connected in parallel, and switch circuits including protection circuits and resistors, which regulate voltage or current to prevent damage by controlling switches and protection circuits in response to high voltage signals, ensuring batteries are pre-charged and protected from excessive voltage or current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high voltage is applied to the battery cluster, then the charging speed and power output are improved, but the voltage or current becomes excessively high causing damage to the battery
Solution Approach 1:
The patent introduces a protection circuit as an intermediary component between the high voltage source and the battery cluster. This protection circuit includes current limiting functionality that mediates the voltage and current levels, allowing high power application while preventing excessive voltage or current from reaching the battery, thus resolving the contradiction between power output improvement and battery protection
Solution Approach 2:
The control circuit continuously monitors the voltage and current status of the battery cluster and provides feedback signals. Based on this feedback, the control circuit dynamically adjusts the switching states of the protection circuit and battery switches, enabling real-time regulation of voltage and current levels to prevent battery damage while maintaining optimal charging speed and power output
2Quantity of substance
If multiple batteries are connected in series and parallel to meet charging demand, then the energy storage capacity is improved, but the complexity of voltage and current control increases
Solution Approach 1:
The patent divides the energy storage system into multiple battery clusters, with each cluster equipped with its own protection circuit and control logic. This segmentation allows independent management of each cluster's voltage and current, simplifying the overall control complexity while maintaining high energy storage capacity through parallel connection of multiple clusters
Solution Approach 2:
The control circuit is designed with multi-functionality to manage both the protection circuits and battery switches across multiple clusters. This universal control approach consolidates the complexity into a single control unit that can handle voltage and current regulation for all clusters simultaneously, rather than requiring separate control systems for each cluster
Data Source
AI summary
An energy storage apparatus includes a control circuit, multiple battery clusters connected in parallel, and switch circuits corresponding to the battery clusters. The switch circuit includes a first switch and a protection circuit connected in parallel. The control circuit is connected to each first switch and each protection circuit. Each battery cluster is connected to the corresponding first switch and protection circuit. The control circuit is configured to control, according to a high voltage on signal, the protection circuit to be closed and the first switch to be opened.