Battery Control Apparatus with Deterioration-Based Bypass Switching
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Solution Overview
Problem
Conventional battery control methods do not effectively improve the efficiency of battery circuits as they connect batteries with varying degrees of deterioration, leading to inefficient power usage and accelerated deterioration.
Innovation Solution
A battery control apparatus that includes a battery circuit with series-connected batteries, bypass circuits, switches, a deterioration detecting section, and a switch control section to remove batteries with greater deterioration and connect those with smaller deterioration, optimizing battery usage and slowing down deterioration progression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If batteries with different degrees of deterioration are connected in series in the battery circuit, then the battery circuit can maintain operation with all batteries, but the efficiency of the battery circuit deteriorates due to uneven power output and accelerated deterioration of weaker batteries
Solution Approach 1:
The patent segments the battery circuit into multiple independent battery modules, each with its own bypass circuit. This allows individual batteries to be managed separately based on their deterioration status, enabling selective connection or disconnection from the main circuit without affecting other batteries.
Solution Approach 2:
The patent implements dynamic reconfiguration of the battery circuit using control sections that monitor battery states and automatically adjust circuit topology. The circuit transitions from a fixed series connection to a dynamic configuration where batteries can be selectively connected or bypassed based on real-time deterioration detection, optimizing efficiency while maintaining reliability.
2Reliability
If batteries are removed from the battery circuit when fault is detected, then the reliability of the remaining batteries is maintained, but the productivity of the battery circuit decreases due to reduced number of active batteries
Solution Approach 1:
The patent changes the operational parameters of the battery circuit by dynamically adjusting which batteries are active based on their state of charge and deterioration level. Instead of removing faulty batteries permanently, the system adjusts circuit configuration parameters to include or exclude specific batteries, maintaining both reliability and productivity through optimized parameter selection.
3Power
If more batteries are connected in series to increase voltage output, then the power output of the battery circuit increases, but the deterioration rate of individual batteries accelerates due to higher stress
Solution Approach 1:
The patent applies partial action by not always utilizing all available batteries in the series circuit. Instead of consistently connecting all batteries to maximize voltage output, the system selectively connects only the necessary number of batteries based on current power requirements and individual battery states, reducing stress on individual batteries while maintaining sufficient power output.
Data Source
AI summary
A battery control apparatus includes: a battery circuit in which a plurality of batteries are connected in series; a plurality of bypass circuits, each of which removes a corresponding battery from the battery circuit; a plurality of switches, each of which switches whether to connect a corresponding battery in series with the other batteries, or to connect the corresponding battery to a corresponding bypass circuit to remove the corresponding battery from the battery circuit; a deterioration detecting section that detects deterioration of each of the plurality of batteries; and a switch control section that controls the plurality of switches to remove, from the battery circuit, the batteries having greater deterioration and connects, in series, the batteries having smaller deterioration.