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1. 定义：Definition
压实密度的计算公式：压实密度=面密度/材料的厚度
在锂离子电池设计过程中，压实密度=面密度/(极片碾压后的厚度—集流体厚度) ，单位：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
压实密度分为：负极压实密度Anode density（或称为阳极压实密度）和正极压实密度Cathode density（或称为阴极压实密度）。
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)
在外力的压缩过程中，随着粉末的移动和变形，较大的空隙被填充，颗粒间接触面积增大，使原子间产生吸引力且颗粒间的机械楔合作用增强，从而形成具有一定密度和强度的压坯.
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.
满足标准：GBT 24533-2009 锂离子电池石墨类负极材料，附录L:粉末压实密度的测试方法，
Meet standard: GBT 24533-2009 lithium ion battery graphite type anode materials, appendix L: Test method of powder compaction density,
也可以用于具有类似特性之粉末和颗粒压实密度之测定；上粉末和颗粒测试方法相通。
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.
2. 技术 参数Technical parameter
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测试项目test project |
技术 参数Technical parameter |
分辨率Accuracy |
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1.主压力 Main pressure |
5吨；10吨；15吨；20吨；（选购）/ 5 tons; 10 tons; 15 tons; 20 tons(choose to buy) |
传感器：1级/ Sensor: class 1 |
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2.位移测量/displacement |
高精度位移传感器系统， High precision dial gauge |
0.001mm |
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3.位移行程/ Displacement stroke |
0-20mm |
0.1mm |
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4. 控制系统/ Control system |
液压恒压控制系统 Hydraulic constant pressure control system |
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5.显示方式/display |
7寸触摸屏+PC软件7 inch touch screen+PC |
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6. 模具mould |
内径：12.8mm；高：25mm Inner diameter: 12.8mm,height：25mm（customizable） |
0.1mm |
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7.脱模方式Demoulding method |
自动automatic |
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8.安全装置 Safety device |
自动诊断、过载保护和急停控制/ Automatic diagnosis, overload protection and emergency stop control |
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9.温湿度范围 Temperature humidity range |
常温-50度；湿度：20%-98%/ Room temperature -50 degrees, humidity：20%-98% |
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10.时间设置time setting |
0-99.9S |
0.1S |
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11.设备管理功能 Device management function |
密码设置及数据管理存储 Password settings and data management storage |
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12.密度值 Density value |
99.99999g/cm3 不同样品特性不同密度有所差异 Different samples characteristics have different density. |
3%以内 Less than 3% |
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13.形变量Deformation variables |
可测量弹性材料形变量Measure the amount of elastic material deformation |
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14.高精度测试天平（选购） High precision test balance(choose to buy) |
精确到0.00001g，量程：120g Accurate to 0.00001g, range: 120g |
0.01% |
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15.位移速度Displacement speed |
小于15mm/min |
0.1mm/min |
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16.使用环境要求 Environmental requirements |
仪器使用环境要求：工作温度：-10℃－40℃，湿度：≤65%RH Environmental requirements for instruments：working temperature：-10℃－40℃，humidity：≤65%RH |
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17.电源 Power Supply |
380v |
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18. 整机不确定性误差 Machine uncertainty error |
整机不确定性误差Machine uncertainty error 3% |
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选购项目 Choose and buy items |
a．电脑，打印机 b.其他规格模具 c.电动抽油装置 d.抽真空装置 e.水分仪 f.真密度仪 g.松装密度仪 h.振实密度仪 a．Computer, printer, b.other specifications mold, c.Electric pumping unit, d. vacuum device e. moisture meter f. true density meter g. loose density meter h. tap density meter |
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