CN110117186A - 一种降低动力电池整体高度的新能源陶瓷连接器及其制备方法 - Google Patents

一种降低动力电池整体高度的新能源陶瓷连接器及其制备方法 Download PDF

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CN110117186A
CN110117186A CN201810928448.8A CN201810928448A CN110117186A CN 110117186 A CN110117186 A CN 110117186A CN 201810928448 A CN201810928448 A CN 201810928448A CN 110117186 A CN110117186 A CN 110117186A
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aluminium oxide
oxide ceramics
power battery
powder
whole height
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康文涛
康丁华
蒋勇
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Loudi City An Diyasi Electronic Ceramics Co Ltd
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Loudi City An Diyasi Electronic Ceramics Co Ltd
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Abstract

本发明公开了一种降低动力电池整体高度的新能源陶瓷连接器，包括95氧化铝陶瓷本体和金属化，所述95氧化铝陶瓷本体为带内凹槽环形结构。本发明还公开了一种降低动力电池整体高度的新能源陶瓷连接器的制备方法，包括95氧化铝陶瓷本体的制备和金属化的制备，95氧化铝陶瓷本体的制备包括配料、造粒、成型、烧结、精加工工艺；所述钼锰合金层制作包括浆料制备、印刷、烧结及表面处理工艺。本发明提供的动力电池连接器保证现有技术的安全性前提下，同规格型号产品重量降低，组装至动力电池模组中后，电池整体高度降低，从而降低电池模组在整车中所占重量比及体积比，减少整车重量，降低能耗。

Description

一种降低动力电池整体高度的新能源陶瓷连接器及其制备 方法
技术领域
本发明为陶瓷管烧结技术领域，尤其涉及一种降低动力电池整体高度的新能源陶瓷连接器及其制备方法。
背景技术
汽车的行驶阻力与车重成正比，车重增加，会使汽车的能耗大部分消耗在自重上，在100公里时速以下，重量因素决定80%的动力能耗；时速100公里以上，风阻就成为动力能耗的主要因素。国际铝业协会报告指出，汽车自重每减少10%，动力能源消耗可降低6%～8%。
当前新能源电动汽车动力电池正负极连接普遍采用铆接工艺，铆接时内部增加普通结构陶瓷作为垫圈，以达到电解液与外壳绝缘密封效果，较为先进技术为采用环状陶瓷，上下端面实施金属化，使陶瓷具有可焊性，从而达到正负极与电池外壳连接但绝缘的效果；以上两种方案虽能解决动力电池正负极与外壳绝缘连接、密封电解液的效果，但会增加动力电池模组的整体高度及在车内的整体重量，使得整车重量增加，耗能增加。
发明内容
针对现有技术的不足，本发明提供一种降低动力电池整体高度的新能源连接器及其制备方法，采用本发明提供的动力电池连接器在保证现有技术的安全性前提下，同规格型号产品重量降低，组装至动力电池模组中后，电池整体高度降低，从而降低电池模组在整车中所占重量比及体积比。
为实现上述目的，本发明提供如下技术方案：
一种降低动力电池整体高度的新能源陶瓷连接器，包括氧化铝陶瓷本体和金属化层，所述氧化铝陶瓷本体为带内凹槽的环形结构，所述凹槽表面和氧化铝陶瓷本体外侧面印刷金属化层。
进一步地，所述凹槽的深度为0.3-50mm。
进一步地，所述金属化层的厚度为30μm～70μm。
进一步地，所述氧化铝陶瓷本体为95氧化铝陶瓷本体，所述金属化层为钼锰镍合金层。
一种降低动力电池整体高度的新能源陶瓷连接器的制备方法，包括以下步骤：（1）配料：将80%～90%的Al2O3粉体、6%～15%的ZrO2粉体、1%～2%的SiO2粉体、2.5%～5%的CaCO3粉体、0.5%～2%的高岭土，按比例混合后得混合粉体备用；（2）造粒：将所述混合粉体加入搅拌磨，加入2～2.5倍混合粉体重量的高铝瓷球和1～2倍混合粉体重量的去离子水，搅拌3～6h，喷雾造粒，控制造粒颗粒为球形，得到混合颗粒；（3）成型：将所述混合颗粒加入带凹槽环形模具的专用粉料成型机成型得到坯件，成型压力为6～15t；（4）烧结：将所述坯件进行成瓷烧结得到氧化铝陶瓷本体，烧结温度控制在1580℃～1680℃，控制坯件烧结后的密度大于3.62g/cm³；（5）金属浆料制备：将60%～80%的Mo粉、12%～20%的Mn粉、8%～20%的氧化铝陶瓷本体配料制得的混合粉体混合制得混合料，加入2～2.5倍混合料重量的玛瑙球和15%～30%混合料重量的硝棉溶液，置于刚玉坛中滚动12～16h，得到金属化浆料；（6）印刷：将所述氧化铝陶瓷本体的凹槽和外圆侧面印刷所述金属化浆料，印刷层厚度控制在30μm～70μm；（7）烧结：将印刷后的氧化铝陶瓷本体还原气氛下高温烧结，烧结温度控制在1470℃～1600℃，烧结后至少保温1小时；（8）表面处理：烧结后，在钼锰合金层表面镀镍得到新能源陶瓷连接器。
进一步地，烧结工序后，对氧化铝陶瓷本体进行精加工，将烧结后的氧化铝陶瓷本体置于双面研磨机中，采用专用游星轮进行表面精加工，控制加工后氧化铝陶瓷本体上下端面平整度小于0.03mm。
本发明中，氧化铝陶瓷本体采用带内凹槽环形结构，所述凹槽表面和氧化铝陶瓷本体外侧面印刷金属化层，铜端子从氧化铝陶瓷本体环形结构中间穿过并固定在氧化铝陶瓷本体凹槽上，铝碟片固定在氧化铝陶瓷本体两侧，所述铜端子与氧化铝陶瓷本体的接触面、铝碟片与氧化铝陶瓷本体的接触面为钎焊点。本发明制备的陶瓷连接器组装至动力电池模组中后，电池整体高度降低，从而降低电池模组在整车中所占重量比及体积比。
有益效果：
与现有技术相比，本发明的有益效果是：
本发明提供的动力电池连接器保证现有技术的安全性前提下，同规格型号产品重量降低，组装至动力电池模组中后，电池整体高度降低，从而降低电池模组在整车中所占重量比及体积比，减少整车重量，降低能耗。
本发明不改变陶瓷本体密度，在降低氧化铝陶瓷本体厚度后仍能确保其抗折强度＞350MPa。
附图说明
图1为本发明降低动力电池整体高度的新能源陶瓷连接器结构示意图
图中，1-铜端子，2-钼锰镍合金层，3-95氧化铝陶瓷本体，4-铝碟片，5-凹槽。
具体实施方式
实施例1
如图1所示，一种降低动力电池整体高度的新能源陶瓷连接器，包括95氧化铝陶瓷本体3和钼锰镍合金层2，所述95氧化铝陶瓷本体3为带内凹槽5环形结构，所述凹槽5表面和氧化铝陶瓷本体外侧面印刷钼锰镍合金层2，铜端子1从95氧化铝陶瓷本体3环形中间穿过并固定在凹槽5上，95氧化铝陶瓷本体3两侧采用铝碟片4固定，所述铜端子与氧化铝陶瓷本体的接触面、铝碟片与氧化铝陶瓷本体的接触面为钎焊点。
优选地，所述凹槽深度为0.3-50mm，凹槽的深度等于电池降低的高度，现有技术中，铜端子从95氧化铝陶瓷本体环形中间穿过并固定在95氧化铝陶瓷本体的金属化层上，铝碟片固定在氧化铝陶瓷本体两侧的金属化层上，所述铜端子与氧化铝陶瓷本体的接触面、铝碟片与氧化铝陶瓷本体的接触面为钎焊点，95氧化铝陶瓷本体中间设有环形凹槽时，铜端子的钎焊点高度降低，降低电池整体高度，从而降低电池模组在整车中所占重量比及体积比。
一种降低动力电池整体高度的新能源陶瓷连接器的制备方法，包括95氧化铝陶瓷本体的制备和金属化的制备，95氧化铝陶瓷本体的制备具体步骤如下：（1）配料：将80%～90%的Al2O3粉体、6%～15%的ZrO2粉体、1%～2%的SiO2粉体、2.5%～5%的CaCO3粉体、0.5%～2%的高岭土，按比例混合后得混合粉体备用；（2）造粒：将混合粉体加入搅拌磨，加入2倍混合粉体重量的高铝瓷球和2倍混合粉体重量的去离子水，搅拌3～6h，喷雾造粒，控制造粒颗粒为球形，得到混合颗粒；（3）成型：将混合颗粒加入带凹槽环形模具的专用粉料成型机成型得到坯件，成型压力为6～15t；（4）烧结：将坯件进行成瓷烧结得到瓷体，烧结温度控制在1580℃～1680℃，控制坯件烧结后的密度大于3.62g/cm³；（5）精加工：将烧结后的瓷体置于双面研磨机中，采用专用游星轮进行表面精加工，控制加工后瓷体上下端面平整度小于0.03mm；所述金属化的制备具体步骤如下：（6）浆料制备：60%～80%的Mo粉、12%～20%的Mn粉、8%～20%的95氧化铝陶瓷本体配料制得的混合粉体混合制得混合料，加入2～2.5倍混合料重量的玛瑙球和15%～30%混合料重量的硝棉溶液，置于刚玉坛中滚动12～16h，得到金属化浆料；（7）印刷：将所述95氧化铝陶瓷本体的凹槽和外圆侧面印刷金属化浆料，印刷层厚度控制在30μm～70μm；（8）烧结：将印刷后的95氧化铝陶瓷本体还原气氛下高温烧结，烧结温度控制在1470℃～1600℃，烧结后至少保温1小时；（9）表面处理：烧结后，在钼锰合金层表面镀镍得到新能源陶瓷连接器。
上面对本专利的较佳实施方式作了详细说明，但是本专利并不限于上述实施方式，在本领域的普通技术人员所具备的知识范围内，还可以在不脱离本专利宗旨的前提下做出各种变化。

Claims (5)

1.一种降低动力电池整体高度的新能源陶瓷连接器，包括氧化铝陶瓷本体和金属化层，其特征在于，所述氧化铝陶瓷本体为带内凹槽的环形结构，所述凹槽表面和氧化铝陶瓷本体外侧面印刷金属化层。
2.根据权利要求1所述的降低动力电池整体高度的新能源陶瓷连接器，其特征在于，所述凹槽的深度为0.3-50mm。
3.根据权利要求1所述的降低动力电池整体高度的新能源陶瓷连接器，其特征在于，所述金属化层的厚度为30μm～70μm。
4.一种如权利要求1所述的降低动力电池整体高度的新能源陶瓷连接器的制备方法，其特征在于，包括以下步骤：（1）配料：将80%～90%的Al2O3粉体、6%～15%的ZrO2粉体、1%～2%的SiO2粉体、2.5%～5%的CaCO3粉体、0.5%～2%的高岭土，按比例混合后得混合粉体备用；（2）造粒：将所述混合粉体加入搅拌磨，加入2～2.5倍混合粉体重量的高铝瓷球和1～2倍混合粉体重量的去离子水，搅拌3～6h，喷雾造粒，控制造粒颗粒为球形，得到混合颗粒；（3）成型：将所述混合颗粒加入带凹槽环形模具的专用粉料成型机成型得到坯件，成型压力为6～15t；（4）烧结：将所述坯件进行成瓷烧结得到氧化铝陶瓷本体，烧结温度控制在1580℃～1680℃，控制坯件烧结后的密度大于3.62g/cm³；（5）金属浆料制备：将60%～80%的Mo粉、12%～20%的Mn粉、8%～20%的氧化铝陶瓷本体配料制得的混合粉体混合制得混合料，加入2～2.5倍混合料重量的玛瑙球和15%～30%混合料重量的硝棉溶液，置于刚玉坛中滚动12～16h，得到金属化浆料；（6）印刷：将所述氧化铝陶瓷本体的凹槽和外圆侧面印刷所述金属化浆料，印刷层厚度控制在30μm～70μm；（7）烧结：将印刷后的氧化铝陶瓷本体还原气氛下高温烧结，烧结温度控制在1470℃～1600℃，烧结后至少保温1小时；（8）表面处理：烧结后，在钼锰合金层表面镀镍得到新能源陶瓷连接器。
5.根据权利要求4所述的降低动力电池整体高度的新能源陶瓷连接器的制备方法，其特征在于，烧结工序后，对氧化铝陶瓷本体进行精加工，将烧结后的氧化铝陶瓷本体置于双面研磨机中，采用专用游星轮进行表面精加工，控制加工后氧化铝陶瓷本体上下端面平整度小于0.03mm。
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