電池容量測試儀 / 放電測試儀 BLU-D 系列

BLU-D 系列概述電池容量測試儀/放電測試儀BLU-D 系列是 DV Power 推出的最新解決方案，可對電池容量進行全面測量和完全放電。

該萬用儀器適用於任何電池組（鉛酸、鋰離子、鎳鎘或其它類型），電壓範圍高達 1350 V DC。

BLU-D 系列提供了 BLU-C 系列的所有選項和功能。在放電過程中，關鍵測試參數可在 7 吋觸控螢幕顯示器上以圖形和數字形式進行監控。

該儀器還支持測量和監控電池參數（電壓/電池間電壓/溫度），使其成為一款功能齊全的獨立放電測試儀。

除了電池放電測試外，BLU-D 系列還可以將電池完全、高效率放電至 0 V。這種完全放電通常應用於壽命結束的鋰電池，作為回收過程的第一步。

有關此主題的更多資訊，請參閱以下文章：

 如何在電動汽車電池的維修或回收過程中使用電池負載單元？

基於安全原因，鋰電池系統的運輸要求電池放電至 30%。BLU-D 系列提供特殊放電模式，可將電池放電至客戶預設的電壓位準。

BLU1000D、BLU1000DZ 及 BLU1350D 型號BLU-D 系列包含 3 種型號：BLU1000D、BLU1000DZ 和 BLU1350D。

這三種型號均具備 BLU-C 系列的所有功能和選項，包括放電至 0 V。差異在於電池放電低於 5 V 時的表現：

• BLU1000D 透過選擇最小電阻放電（電壓降低時電流隨之減小）。
• BLU1000DZ 配備內建零電壓放電（ZVD）模組，可提供恆定電流放電（最高 50 A）直至電壓降至 0 V。

BLU1000 是一款高倍率放電測試儀（最大放電電流 120 A，最大放電功率 15 kW），可在寬電壓範圍（125 – 1 020 V 直流）內提供最大放電功率，

具體如下方電壓/電流曲線圖所示：

BLU1350D 在寬電壓範圍（800 – 1 350 V 直流）內提供最大功率（40 kW）。最大放電電流（最高可達 100 A）與電池電壓的關係如圖所示：

BLU-D 放電模式用戶可選擇以下四種放電模式之一：

• 恒定電流
• 恒定功率
• 恒定電阻
• 恒定電壓

BLU-D 支援將放電電流設置為最高 120 A，解析度為 0.1 A。若需更高電流，可將最多 10 個 BLU-D 單元並聯連接。

此外，可以透過用戶可選的放電曲線模擬不同的電池工作循環。

電池放電測試可在不將電池與負載斷開的情況下進行，通過外部電流鉗測量總電池電流或負載電流。

這樣，電池可在在線狀態下進行測試。容量測試儀與DV-B Win 軟體軟體相容。因此，用戶可查看關鍵參數的詳細數值和圖形展示，並生成多種格式的報告。

電池容量測試影片

Battery Capacity Tester / Discharge Tester BLU-D Series is the latest DV Power solution for comprehensive battery capacity measurement and full battery discharge. This universal instrument is applicable to any battery string (lead-acid, lithium-ion, nickel-cadmium based or other) with voltages up to 1 350 V DC.

BLU-D Series provides all options and features of BLU-C Series. Key test parameters can be monitored (graphically and numerically) on 7-inch touch screen display during the discharge process. The instrument also enables the measurement and monitoring of cell parameters (voltage/intercell voltage/temperature), which makes it a complete stand-alone discharge tester .

Besides the battery discharge test, BLU-D Series can be used to discharge a battery, completely and efficiently, down to 0 V. Such total discharge is applied to Li cells at the end of their lifetime, as the initial step of the recycling process. More information about this topic can be found on this article How to Use Battery Load Units in Process of Repair or Recycling of EV Batteries?

Transport of Li battery systems, due to safety reasons, requires batteries to be discharged down to 30%. BLU-D Series provides special discharge mode enabling batteries to be discharged to the customer predefined voltage level.

BLU1000D, BLU1000DZ & BLU1350D Models

BLU-D Series includes 3 models: BLU1000D,BLU1000DZ and BLU1350D.

All three models are providing all features and options of the BLU-C Series, including discharge down to 0 V. The difference is related to the battery discharge below 5 V:

• BLU1000D will discharge the battery by selecting minimum resistance (and current will decrease as the voltage decrease), and
• BLU1000DZ, having built-in Zero Voltage Discharge (ZVD) module, can provide constant current discharge (up to 50 A) down to 0 V.

BLU1000 is a high rate discharge tester (up to 120 A / up to 15 kW) providing maximum discharge power on wide battery voltage range (125 – 1 020 V DC), as presented on Voltage / Current diagram below:

BLU1350D provides maximum power (40 kW) on wide voltage range (800 – 1 350 V DC). Maximum discharge currents (up to 100 A), in relation to the battery voltage, are presented on the graph below: 

BLU-D Discharge modes

A user can select one of four discharge modes:

• Constant current
• Constant power
• Constant resistance
• Constant voltage

BLU-D enables setting the discharge current up to 120 A, with 0,1 A resolution. If higher currents are required, up to 10 x BLU-D units can be connected in parallel.

Additionally, different battery duty cycles can be simulated using user-selectable discharge profiles.

The battery discharge test can be carried out without disconnecting the battery from the load it supplies, by using external current clamp to measure the total battery current or the load current. This way batteries can be tested while they are online.

The capacity tester is compatible with DV-B Win software. Therefore, the user can view detailed numerical and graphical presentations of key parameters and create reports in various formats.