A method and system for dynamic pre-heating of a liquid-cooled charging gun

CN121157686BActive Publication Date: 2026-08-28BEIJING HUASHANG SANYOU NEW ENERGY TECH
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Patent Information

Application Number
CN202511362648.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-09-23
Publication Date
2026-08-28
Estimated Expiration
2045-09-23

AI Technical Summary

Technical Problem

[0002]现有技术中，传统液冷充电枪在低温环境下存在明显不足：一方面，因冷却液黏度增大、流动性降低导致循环阻力增加，无法快速建立有效热交换，造成低温启动效率低下，显著延长充电准备时间；另一方面，未预热时直接启动高功率充电，金属部件与冷却液温差过大，易产生热应力裂纹，缩短设备寿命；同时，现有方案依赖充电过程中实时调节温度，未提前预热，既需消耗额外能量补偿初始低温状态，又存在控温滞后问题，且因仅针对充电阶段散热、缺乏独立预加热流程，导致低温启动时性能不稳定，甚至可能触发安全保护停机

Benefits of technology

[0033]本发明的有益效果在于，本发明提供的一种液冷充电枪动态预加热方法、系统通过液冷箱主动预热与循环泵驱动，提前优化冷却液状态，降低液体黏滞阻力，解决了低温环境下启动效率低、循环阻力大的问题，确保充电枪快速进入高效工作状态；同时，结合多源数据动态调整预热温度与流速，采用分阶段加热方法，避免固定模式温控导致的能耗浪费或控温不足，配合闭环PID控制算法优化加热功率与泵速匹配，提升控温响应速度并减少能耗，解决了传统方案中能耗高、控温滞后的问题；此外，通过低流速初始循环与分阶段升温设计，使枪体材料均匀受热，消除骤冷骤热引发的结构疲劳，降低热应力损伤风险，延长充电枪使用寿命，解决了热应力导致组件寿命缩短的问题；且通过独立预加热模块与多重安全机制，确保系统在低温启动时的稳定性与安全性，避免因缺乏预加热流程而导致的性能波动或安全停机，整体填补了现有技术中预加热阶段的空白，实现了效率、寿命与能耗的协同优化。

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Abstract

The application discloses a kind of liquid cooling charging gun dynamic preheating method, system, it is related to new energy electric vehicle charging equipment technical field.The method includes the following steps: liquid cooling box preheating, dynamic temperature regulation, closed-loop feedback control and optimization, safety protection and fault handling step.Through liquid cooling box heating module, preheat coolant, combine ambient temperature, charging power demand and battery SOC generate three-stage preheating temperature curve, dynamically adjust target temperature and flow rate;Using fuzzy logic dynamically adjusts PID parameter, real-time optimization heating power and cycle efficiency;Set overheat protection, flow anomaly alarm and self-checking function guarantee system reliable.The application solves the problem of low temperature under low efficiency, high energy consumption, temperature control hysteresis and short equipment life.
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Citation Information

Patent Citations

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