Battery Cluster Thermal Balancing for Uniform Pack Temperature
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Solution Overview
Problem
The challenge of effectively controlling temperature in battery systems to prevent thermal runaway and improve performance, especially when batteries are connected in series and parallel, is not adequately addressed by existing technologies.
Innovation Solution
A method and apparatus for temperature control in battery systems that involve acquiring the temperature of each battery cluster, determining a target cluster based on temperature differences, and performing temperature regulation on high-temperature or low-temperature clusters to achieve uniformity, thereby optimizing performance and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If batteries are connected in series and parallel to form a battery system, then the energy storage capacity and power output are improved, but the temperature uniformity deteriorates and thermal runaway risk increases
Solution Approach 1:
The battery system is divided into multiple battery clusters, each equipped with independent temperature sensors and cooling channels. This segmentation allows for localized temperature monitoring and control, enabling differential cooling strategies for different clusters based on their individual thermal states, thus maintaining temperature uniformity across the entire system while preserving high power output capability.
Solution Approach 2:
The patent implements local quality control by applying different cooling intensities to different battery clusters based on their real-time temperature conditions. High-temperature clusters receive stronger cooling while low-temperature clusters receive weaker cooling or no cooling, optimizing heat dissipation efficiency and maintaining overall temperature uniformity without compromising the system's power output.
2Power
If batteries work at high current for a long time, then the power output is improved, but the temperature rises and safety deteriorates
Solution Approach 1:
The patent employs a feedback control mechanism where temperature sensors continuously monitor the temperature of each battery cluster and transmit data to the control unit. The control unit processes this information and adjusts the cooling system's operation accordingly, increasing cooling intensity when temperatures rise during high-current operation, thus maintaining safety while preserving power output capability.
Solution Approach 2:
The system performs preliminary temperature control by activating cooling measures before thermal runaway occurs. When temperature sensors detect rising temperatures during high-current operation, the control unit preemptively increases cooling intensity to prevent temperature escalation, ensuring safety is maintained throughout extended high-power operation.
3Speed
If the temperature of battery clusters is inconsistent, then the charging speed is improved, but the energy conversion efficiency deteriorates
Solution Approach 1:
The patent implements dynamic temperature control by continuously adjusting the cooling intensity for each battery cluster based on real-time temperature conditions during charging. This dynamic adjustment ensures that all clusters operate within optimal temperature ranges, maintaining high charging speeds while maximizing energy conversion efficiency and minimizing energy losses.
Data Source
AI summary
A temperature control method for a battery system includes: acquiring the temperature of each of a plurality of battery clusters of the battery system; and determining a target battery cluster among the plurality of battery clusters according to the temperature of each battery cluster. By means of the technical solution, temperature control is performed on the target battery cluster among the plurality of battery clusters in a targeted manner.