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粉末自動(dòng)壓實(shí)儀 

一. 定義：Definition

壓實(shí)密度的計算公式：壓實(shí)密度=面密度/材料的厚度

在鋰離子電池設計過(guò)程中，壓實(shí)密度=面密度/(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(shí)密度分為：負壓實(shí)密度Anode density（或稱(chēng)為陽(yáng)壓實(shí)密度）和正壓實(shí)密度Cathode density（或稱(chēng)為陰壓實(shí)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(dòng)壓實(shí)儀 

二. 原理: Principle:

鋰離子動(dòng)力電池在制作過(guò)程中，壓實(shí)密度對電池性能有較大的影響。通過(guò)實(shí)驗證明，壓實(shí)密度與片比容量，效率，內阻，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.

找出壓實(shí)密度對電池設計很重要。一般來(lái)說(shuō)，壓實(shí)密度越大，電池的容量就能做的越高，所以壓實(shí)密度也被看做材料能量密度的參考指標之一。

It is important to find the optimal compaction density for battery design.Generally speaking, the higher the density, the higher the capacity of the battery, so the compacted density is also seen as a reference indicator of the energy density of the material.

粉末自動(dòng)壓實(shí)儀 壓實(shí)密度不光和顆粒的大小、密度有關(guān)系，還和粒子的級配有關(guān)系，壓實(shí)密度大的一般都有很好的粒子正態(tài)分布?？梢哉J為，工藝條件一定的條件下，壓實(shí)密度越大，電池的容量越高。

The compaction density is not only related to the size and density of the particle, but also related to the level of the particle, Normally, High compaction density has a good particle normal distribution.It can be said that under certain conditions ,The higher density of the battery, the higher capacity of the battery.

合適的正壓實(shí)密度可以增大電池的放電容量，減小內阻，減小化損失，延長(cháng)電池的循環(huán)壽命，提高鋰離子電池的利用率。在壓實(shí)密度過(guò)大或過(guò)小時(shí)，不利于鋰離子的嵌入嵌出。

The proper positive electrode compaction density can increase the discharge capacity of the battery, reduce the internal resistance, reduce the loss of polarization, extend the cycle life of battery, Improve the utilization rate of lithium ion batteries. If the The compacted density is too large or too small , It is bad for the embedding of lithium ions.

三.適用范圍：Scope of application

在外力的壓縮過(guò)程中，隨著(zhù)粉末的移動(dòng)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增強，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.

滿(mǎn)足標準：GBT 24533-2009 鋰離子電池石墨類(lèi)負材料，附錄L:粉末壓實(shí)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(lèi)似特性之粉末和顆粒壓實(shí)密度之測定；上粉末和顆粒測試方法相通。

It can also be used for the determination of powder and particle’s compaction density which have similar properties; The test methods of powder and particle are similar internationally.

四.功能描述：Function description:

采用液壓恒壓加壓測量系統，7寸觸摸屏和PC軟件控制，荷重單元控制系統能采集應力變化數據，可以任意設置壓力、時(shí)間數據，位移由位移傳感器直讀，溫濕度數據通過(guò)傳感器獲得，多位數的AD芯片來(lái)保障數據的分析，全自動(dòng)模式，手動(dòng)操作模式及多段設置操作模式并存；配置PC軟件可以獲得應力與粉體密度關(guān)系曲線(xiàn)；時(shí)間與粉體屈服強度關(guān)系；過(guò)程數據的分析和曲線(xiàn)圖譜，為生產(chǎn)企業(yè)和科研院所研發(fā)新品和改善工藝建立數據模型.提供中英文兩種語(yǔ)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.