FT-100F 粉末自動壓實(shí)密度儀 (升級版)
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FT-100F 粉末自動壓實(shí)密度儀 (升級版)的詳細(xì)資料 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
粉末自動壓實(shí)密度儀 (升級版)
一. 定義:Definition
在鋰離子電池設(shè)計(jì)過程中,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(fù)壓實(shí)密度Anode density(或稱為陽壓實(shí)密度)和正壓實(shí)密度Cathode density(或稱為陰壓實(shí)密度)。 鋰離子動力電池在制作過程中,壓實(shí)密度對電池性能有較大的影響。通過實(shí)驗(yàn)證明,壓實(shí)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. 找出壓實(shí)密度對電池設(shè)計(jì)很重要。一般來說,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(biāo)之一。
It is im
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。可以認(rèn)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 o 合適的正壓實(shí)密度可以增大電池的放電容量,減小內(nèi)阻,減小化損失,延長電池的循環(huán)壽命,提高鋰離子電池的利用率。在壓實(shí)密度過大或過小時(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.
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(jī)械楔合作用增強(qiáng),從而形成具有一定密度和強(qiáng)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 co
滿足標(biāo)準(zhǔn):GBT 24533-2009 鋰離子電池石墨類負(fù)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 des
采用液壓恒壓加壓測量系統(tǒng),7寸觸摸屏和PC軟件控制,荷重單元控制系統(tǒng)能采集應(yīng)力變化數(shù)據(jù),可以任意設(shè)置壓力、時(shí)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芯片來保障數(shù)據(jù)的分析,全自動模式,手動操作模式及多段設(shè)置操作模式并存;配置PC軟件可以獲得應(yīng)力與粉體密度關(guān)系曲線;時(shí)間與粉體屈服強(qiáng)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)新品和改善工藝建立數(shù)據(jù)模型.提供中英文兩種語言版本。
Adopts hydraulic co
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