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粉末自動壓實密度儀的滿足的標準

1.   定義：Definition

壓實密度的計算公式：壓實密度=面密度/材料的厚度

在鋰離子電池設(shè)計過程中，壓實密度=面密度/(極片碾壓后的厚度—集流體厚度) ，單位：g/cm3

Compaction density calculation formula: the compaction density =surface density/ thickness of material

In the process of lithium ion battery design, compaction density = surface density / (The thickness of the pole plate  after crushing – current collector  thickness), unit: g/cm3

壓實密度分為：負極壓實密度Anode density（或稱為陽極壓實密度）和正極壓實密度Cathode density（或稱為陰極壓實密度）。

Compaction density is divided into: the cathode compaction density (or is called the Anode compaction density) and the Anode compaction density (or called the Cathode compaction density)

粉末自動壓實密度儀的滿足的標準

二. 原理: Principle:

鋰離子動力電池在制作過程中，壓實密度對電池性能有較大的影響，壓實密度與片比容量，效率，內(nèi)阻，以及電池循環(huán)性能有密切的關(guān)系。

In the process of making lithium ion power battery, The compacting density has a large effect on battery performance.The test results show that the compaction density is closely related to specific capacity, efficiency, internal resistance and the performance of the battery cycle.

壓實密度越大，電池的容量就能做的越高，所以壓實密度也被看做材料能量密度的參考指標之一。

粉末自動壓實密度儀的滿足的標準

三.適用范圍：Scope of application

在外力的壓縮過程中，隨著粉末的移動和變形，較大的空隙被填充，顆粒間接觸面積增大，使原子間產(chǎn)生吸引力且顆粒間的機械楔合作用加強，從而形成具有一定密度和強度的壓坯.

In the process of the compression of external force, As the movement and deformation of powder, larger gap is filled, The contact area between particles increases, The interatomic appeal and mechanical wedge cooperation between particles will be enhanced, Thus forming a certain density and intensity of compact.

參照標準：GBT 24533-2009 鋰離子電池石墨類負極材料，附錄L:粉末壓實密度的測試方法，

Meet standard: GBT 24533-2009 lithium ion battery graphite type anode materials, appendix L: Test method of powder compaction density,

也可以用于具有類似特性之粉末和顆粒壓實密度之測定；

It can also be used for the determination of powder and particle’s compaction density which have similar properties;

四.功能描述：Function description:

采用液壓測量系統(tǒng)，7寸觸摸屏和PC軟件控制，荷重單元控制系統(tǒng)采集應(yīng)力變化數(shù)據(jù)，可以設(shè)置壓力、時間數(shù)據(jù)，位移由位移傳感器直讀，溫濕度數(shù)據(jù)通過傳感器獲得，多位數(shù)的AD芯片數(shù)據(jù)的分析，自動模式，手動操作模式并存；標配PC軟件可以獲得應(yīng)力與粉體密度關(guān)系曲線；時間與粉體屈服強度關(guān)系；過程數(shù)據(jù)的分析和曲線圖譜，為生產(chǎn)企業(yè)和科研院所研發(fā)和改善工藝建立數(shù)據(jù)模型.提供中英文兩種語言版本。

Adopts hydraulic constant pressureforcing pressure measurement system, 7 inch touch screen and PC software control, High precision load cell stress change control system can precisely collect  the stress change data, Date such as pressure, time Can be arbitrarily set, Displacement direct reading by displacement sensor, the temperature and humidity data obtained from the sensor, Multidigit AD chip to ensure data analysis, Automatic mode, Manual mode and Multistage set operating modes coexist; Configuring PC software to obtain the stress and powder density curve;The relationship between the time and the yield strength of the powder;Analysis of process data and curve spectrum , Set up data model  for production enterprises and scientific research institutes develop new products and improve the process. Provide both Chinese and English languages.

五. 參數(shù)資料  parameter