电动汽车充电桩/充电枪温度传感器

Data released by the China Charging Alliance shows that as of May 2024, there are 10 charging operators nationwide that operate more than 10,000 充电桩. 他们是: Teladian operates 717,000, State Grid operates 696,000, Xingxing Charging operates 584,000, Yunkuai Charging operates 45,000, Southern Power Grid operates 101,000, Yiwi Energy operates 426,000, SAIC Anyue operates 120,000, Shenzhen Car Network operates 106,000, Wanma Ai Charging operates 135,000, and China Putian operates 15,000. 这些 10 operators account for 91.7% 总数的, and the rest of the operators account for 8.3% 总数的.

充电桩, 充电枪RTD PT1000温度传感器

Thermal resistor PT100 sensor rubber probe

High temperature thermistor sensor for EV temperature probe

Qichacha APP shows that on May 18, charging pile service provider “Xingxing Charging” (Wanbang Xingxing Charging Technology Co., 有限公司) announced the completion of its B round of financing. Led by Hillhouse Capital, IDG Capital, New Hope Investment Group, Taikang Asset Management and others followed.

In summer, 天气很热, 并且电动汽车充电桩和电动汽车均处于高消耗状态, 这使得枪很容易失火，造成过热和燃烧事故. 为了保障公共交通安全, 车辆及人身安全, 电动汽车充电桩必须不断提高安全防护水平. 亚讯拥有两套新能源充电枪和充电桩温度传感器解决方案: 一种是焊接解决方案, 传感器与金属部分直接接触. 另一种是薄膜解决方案, 将传感器与线套捆绑在一起.

安装于新能源汽车充电桩/充电枪, 用于新能源汽车充电温度控制
响应速度快
多种安装结构可供选择
防潮性强、稳定性高

温度传感器特性

数字温度传感器的温度传感原理是基于 CMOS 半导体的 PN 结温度与带隙电压之间的特性关系. 小信号放大后, 模数转换, 和数字校准补偿, 它通过数字总线输出. 该传感器具有精度高的优点, 低功耗, 良好的一致性, 测温速度快, 灵活的可编程配置, 和长寿命. 此外, 该传感器还能够抵抗8kV接触放电和15kV非接触放电, 并具有优良的稳定性和耐用性.

主要优点如下:

1. 高精度: 数字温度传感器芯片，测量精度高、稳定性好, 精度±0.5℃, 并能提供准确的温度测量结果.

2. 宽度测量范围: 可覆盖较宽的温度测量范围, 从-70℃到+150℃, 满足各种应用场景的需求.

3. 高可靠性: 民源温度传感器采用固态传感器技术, 没有活动部件, 不易损坏或失效, 并已通过ESD, 老化测试等测试，确保其可靠性.
4. 低功耗: 数字温度传感器芯片通常具有低功耗特性，适用于功耗有限的场合, 例如便携式设备, 无线传感器网络, ETC.
5. 快速响应: 可以实现对温度变化的快速响应, 提高温度监测的实时性和准确性.
6. 高线性度: 温度呈线性，一致性好.
7. 支持用户空间: 内置EEPROM可轻松存储用户数据, 提供灵活性和便利性.
8. 支持级联组网: A single bus supports multi-point cascade networking on one bus, which is convenient for system expansion and management.

Hardware reference design
The M1601B temperature sensor chip supports parasitic power supply mode, 那是, the sensor receives commands and power signals from the main controller through a single data line, and uses this energy to measure temperature. The following figure is a typical circuit.

Schematic diagram of the temperature measurement solution for charging piles
In parasitic power supply mode, M1601B adopts a two-wire application mode, 那是, it communicates with the host through two wires, DQ and GND. 他们之中, R2 is a pull-up resistor used to power the chip, and C2 is an energy storage capacitor used to store energy. 此外, R1, R3, and C1 form a filter circuit to filter out noise in the signal.

为了提高系统的稳定性和可靠性, 该电路还包括一组对称放置的肖特基二极管 D2 和 D5, 以及TVS管D1和D3, 形成保护电路，有效防止电缆上的静电和浪涌对系统的损坏. 此外, D6放置在温度传感器芯片附近，作为保护器件，防止地面异常电压波动损坏传感器芯片.