A new energy electric vehicle automatic charging system

CN224690120UActive Publication Date: 2026-08-28QIANXINAN VOCATIONAL & TECH COLLEGE FOR NATIONALITIES
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Patent Information

Application Number
CN202520827829.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2026-08-28
Estimated Expiration
2035-04-28

AI Technical Summary

Technical Problem

[0011]作为改进，所述直流/直流转换器和电压传感器之间通过唤醒线连接，电压传感器和电池管理系统之间也通过唤醒线连接，通过唤醒线的硬件触发与CAN通讯的软件校验双通道设计，解决现有技术中单一触发方式可靠性低的缺陷

Benefits of technology

[0014]相较于传统的技术，本实用新型的优势在于：通过解决传统方案存在的静态功耗控制失准、补电时机误判、能量传输冲击大、成本可靠性失衡等核心问题，实现了小电瓶SOC维持精度高、系统寿命延长、综合成本降低的技术突破，为新能源汽车长期停放场景提供了可靠的电源保障方案。

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Abstract

The utility model discloses a new energy electric automobile automatic charging system relates to new energy automobile power management technical field, a new energy electric automobile automatic charging system, including power battery, power battery positive pole connects main positive relay, main positive relay connects direct current / direct current converter, direct current / direct current converter connects small battery, and small battery forms closed loop through main negative relay and power battery, and the battery management system is equipped between main positive relay and main negative relay, and the voltage sensor is connected on the battery management system, and the capacitor is also connected in parallel between main positive relay and main negative relay, and the motor controller is connected on the capacitor. Compared with traditional technology, the utility model has the advantages that: through solving the core problem of traditional scheme's static power consumption control inaccuracy, power compensation opportunity misjudgment, energy transmission impact, cost reliability imbalance etc, realize small battery SOC maintenance precision high, system life extension, comprehensive cost reduction's technical breakthrough.
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Claims

1. An automatic charging system for a new energy electric vehicle, comprising a power battery (1), characterized in that: The positive terminal of the power battery (1) is connected to the main positive relay (2), the main positive relay (2) is connected to the DC / DC converter (3), the DC / DC converter (3) is connected to the small battery (4), the small battery (4) forms a closed loop with the power battery (1) through the main negative relay (5), a battery management system (6) is provided between the main positive relay (2) and the main negative relay (5), a voltage sensor (7) is connected to the battery management system (6), a capacitor (8) is also connected in parallel between the main positive relay (2) and the main negative relay (5), and a motor controller (9) is connected in parallel to the capacitor (8).

2. The automatic charging system for a new energy electric vehicle according to claim 1, characterized in that: The DC / DC converter (3) and the voltage sensor (7) are connected via a wake-up line (10), and the voltage sensor (7) and the battery management system (6) are also connected via a wake-up line (10).

3. The automatic charging system for a new energy electric vehicle according to claim 1, characterized in that: CAN communication (11) is provided between the voltage sensor (7) and the battery management system (6).

4. The automatic charging system for a new energy electric vehicle according to claim 1, characterized in that: The motor controller (9) and the battery management system (6) are interlocked.