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功率硬件在环 (HIL)

示例：通过 HIL 试验，可以在各种电池、充电和故障情况下评估牵引逆变器等原型，不必在测功机试验台上或者直接在车辆中进行试验。借助 HIL 系统可以更快、更经济高效地开发产品，因为所有相关的驱动组件都可以模拟，并且测试对象在真实条件下进行可变测试。

主要应用事实

领域


产品开发和原型设计中的 HIL 模拟试验

应用


模拟车内条件以及对高压组件的影响

测量参数


用于控制功能的 0-10 V 和 0-20 mA 标准信号

主要要求


检具的隔离必须针对高标称系统电压和最大系统电压进行设计

由于经常需要快速动态控制，信号传输也必须快速，即尽可能无延迟

需要高精度才能获得可靠的测试结果

高压组件的仿真试验也需要高度的输出隔离 – 不同于市面上常见的产品。

检测高压系统

应用说明

如果在高压环境中使用隔离放大器，通常做法是在输入侧提供最高的电位隔离。然后通常将输出端连接到具有低接地电压的控制器。电动汽车领域的硬件在环 (HIL) 测试日益增多，电压源现在通常位于配置的输出侧。检测系统产生信号，以便模拟车辆系统中的主要条件以及对高压组件的影响。

应用的要求

HIL 系统的设计和性能在很大程度上取决于设备，设备的设计必须满足信号传输要求，同时通过电位隔离分开所有通道。模拟高动态系统中的组件需要相应快速且精确的信号传输。

为何选择 Knick?
Knick 的 P15000 和 A26000 型号（用于双极测量）可以安全地将信号从地电位的模拟环境传输到高电位的组件。
该解决方案的关键特征在于 1000 V 或更高的输出隔离。尺寸小，能够并列安装，可以实现节省空间的系统。该设备的响应时间 T90 为 70 μs，截止频率为 10 kHz，能以小于测量值 0.1% 的增益误差从输入端精确传输到输出端。

相关产品

P15000 Isolated Standard Signal Conditioner | Input and Output 0(4) … 20 mA or 0 … 10 V | Isolation up to 1000 V
P15000 Isolated Standard Signal Conditioner | Input and Output 0(4) … 20 mA or 0 … 10 V | Isolation up to 1000 V
商品编码:

P15000

A26000 Universal Isolated Signal Conditioner | Input 0…±20 mA or 0…±10 V | Current and voltage measurement
A26000 Universal Isolated Signal Conditioner | Input 0…±20 mA or 0…±10 V | Current and voltage measurement
商品编码:

A26000

相关工业和应用

电池循环测试仪
在电池测试过程中，通过 HIL 配置（硬件在环）持续模拟充电和放电过程（电池循环），该配置与电动汽车运行期间的典型使用情况相对应。所测量的一系列参数包括容量、电池效率和自放电。
工厂检测单元中的电气安全
生产过程中使用的检测单元通常由防护罩和电压检测器保护。
车辆与充电站之间接口的直流电压测量
可以通过受电弓为电动商用车快速充电。为此需要在（带活动受电弓的）外部基础设施系统和固定安装在车顶上的充电杆之间保持接触。直流车顶配电箱包含检查充电连接和相应电压、以及与其他车载系统建立连接的组件。
在线检测高压加热器 (HVH)
生产过程中使用的检测单元通常由防护罩和电压检测器保护。
检测电池管理系统 (BMS)
测试系统在电池模型中产生控制电压，以便模拟电池管理系统的温度条件，并评估 BMS 的温度管理。
电动汽车手册


电动汽车测量技术应用和产品解决方案总览

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