CN113512919A - 一种磁耦合无线充电的装配式路面 - Google Patents
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Abstract
本发明涉及一种磁耦合无线充电的装配式路面,包括预制路面板(1),其内设有预应力管道(2)和保护槽(4),保护槽(4)内设有发射线圈(5),发射线圈(5)依次与第一电容(6)、高频逆变电路(7)、第一整流滤波电路(8)及电网(9)相连;电动汽车内连有与发射线圈(5)对应的接收线圈(10),接收线圈(10)依次与第二电容(11)、第二整流滤波电路(12)和负载装置(13)相连;发射线圈(5)和接收线圈(10)均采用矩形圆角平面螺旋线圈,且二者之间通过磁耦合谐振式无线发电。本发明的优点是可实现动态无线充电,解决了电池续航里程不足和充电耗时等问题,使电动汽车的充电方式更加便捷、安全。
Description
技术领域
本发明涉及道路电气化设备技术领域,尤其是一种磁耦合无线充电的装配式路面。
背景技术
随着电动汽车迅速普及,其充电问题也随之而来,传统方式是通过充电桩对锂电池进行充电,但这种方式存在较多的弊端。首先,充电桩的分布与数量各个地区存在着差异,有时存在着“车多桩少”的情况;其次,充电桩的接头磨损也增加了安全隐患,尤其是暴雨天气,室外的充电桩更加危险;最后,充电桩给电动汽车的充电时间较长,不如传统燃油车便捷。
目前,科研人员已开始对电动汽车的无线充电进行研究,在汽车底部设置接收线圈,在路面上铺设发射线圈,通过线圈之间的电磁感应或磁场耦合进行能量的传输,这种无线充电方式非常便捷,没有任何接头处的连接,但需要将发射线圈预先挖沟槽放置在道路行车下方,再重新覆盖、摊铺、碾压对原路面进行复原通车。此方法对原路面易造成质量问题,同时,后期修复路面时,不能确保元器件的安全使用,施工难度大、成本高、工期长以及施工质量不易控制。
发明内容
本发明目的就是为了解决现有无线充电方式须破坏原路面、施工难度大、成本高、工期长和质量不可控的问题,提供了一种磁耦合无线充电的装配式路面,不仅可以不受时间地点的限制,避免了电池续航里程不足和充电耗时等问题,使无线充电更加安全便捷,而且还可以加快施工进程的同时保证道路的质量,装卸方便,便于后期维修和重复利用。
为了实现上述目的,本发明采用了如下技术方案:
一种磁耦合无线充电的装配式路面,包括装配式的预制路面板,预制路面板内设有一组预应力管道,预应力管道内设有一组预应力钢绞线,以通过张拉钢绞线将多块面板连为整体;
预应力管道的上方设有一个保护槽,保护槽连于预制路面板内的中部并沿行车方向设置;
保护槽内设有一组发射线圈,发射线圈与第一电容串联,形成耦合机构,第一电容再依次连接高频逆变电路、第一整流滤波电路及电网;
电动汽车的底部连接一组与发射线圈相对应的接收线圈,接收线圈与第二电容串联,形成耦合机构,第二电容再依次连接第二整流滤波电路和负载装置;
发射线圈和接收线圈均采用矩形圆角平面螺旋线圈,且二者之间通过磁耦合谐振式无线发电。
进一步地,所述预制路面板的上表面设有一层由环氧树脂和玻璃颗粒或者环氧树脂和有机塑料颗粒组成的磨耗层,以用于减少材料磁化影响、提高线圈耦合的传输效率。
进一步地,所述发射线圈与磨耗层下表面的垂直距离为5~6cm。
进一步地,所述磨耗层的厚度为2cm。
进一步地,所述预应力管道相互平行,且均布于预制路面板内。
进一步地,所述保护槽为硬质绝缘塑料槽。
进一步地,所述发射线圈与第一电容串联中、以及接收线圈与第二电容串联中的补偿电路均为ss型拓扑结构。
进一步地,相邻两块预制路面板之间通过凸榫和凹槽结构相连。
进一步地,所述发射线圈和接收线圈的谐振频率相同,以用于确保较高的耦合系数。
进一步地,所述负载装置为蓄电池。
与现有技术相比,本发明的优点具体在于:
(1)预埋发射线圈的装配式路面板可在室内预制完成,与在原路面上专门开槽预埋线圈及回填的复杂工艺相比,此方法可以很大程度上地确保元器件的质量,加快施工速度,不受恶劣天气的影响,路面板的质量更易于把控;
(2)电动汽车可在行使过程中连续充电,不受时间和地点的限制,无需通过充电桩进行充电,无线充电使整个过程更加安全、便捷;
(3)装配式面板之间由预应力钢绞线相连接,确保路面板的稳定性,同时,凸榫和凹槽结构使得面板之间结构连接紧密,具有较好的传力效果,在后期维修过程中,装配式面板易于更换,可快速通车;
(4)与圆形平面螺旋线圈相比,矩形圆角平面螺旋线圈能涵盖更大的供电面积,当线圈之间产生偏移时,对传输距离和效率的影响较低,同时平板式的线圈结构更薄,预埋于路面板内部时仍能保证面板的强度;
(5)发射线圈的外部由硬质绝缘塑料槽包裹,预埋时可避免水分进入,后期维修时可从面板内部回收,重复利用。
附图说明
图1为本发明的一种磁耦合无线充电的装配式路面的结构图;
图2为本发明的一种磁耦合无线充电的装配式路面侧视图;
图3为本发明的发射线圈的连接示意图;
图4为本发明的接收线圈的连接示意图;
图5为本发明的无线充电原理图;
图6为本发明的补偿电路图。
具体实施方式
实施例1
为使本发明更加清楚明白,下面结合附图对本发明的一种磁耦合无线充电的装配式路面进一步说明,此处所描述的具体实施例仅用于解释本发明,并不用于限定本发明。
参见图1、图2,一种磁耦合无线充电的装配式路面,其特征在于:
包括装配式的预制路面板1,相邻两块预制路面板1之间通过凸榫和凹槽结构相连,预制路面板1内均布一组相互平行的预应力管道2,预应力管道2内设有一组预应力钢绞线3,以通过张拉钢绞线将多块面板连为整体;
预应力管道2的上方设有一个保护槽4,保护槽4为硬质绝缘塑料槽,保护槽4连于预制路面板1内的中部并沿行车方向设置;
参见图1、图2和图3,保护槽4内设有一组发射线圈5,发射线圈5与第一电容6串联,形成耦合机构,第一电容6再依次连接高频逆变电路7、第一整流滤波电路8及电网9;
参见图3、图4,电动汽车的底部连接一组与发射线圈5相对应的接收线圈10,接收线圈10与第二电容11串联,形成耦合机构,第二电容11再依次连接第二整流滤波电路12和蓄电池;
发射线圈5与第一电容6串联中、以及接收线圈10与第二电容11串联中的补偿电路均为ss型拓扑结构;
发射线圈5和接收线圈10均采用矩形圆角平面螺旋线圈,且二者之间通过磁耦合谐振式无线发电,且发射线圈5和接收线圈10的谐振频率相同,以用于确保较高的耦合系数;
参见图2,预制路面板1的上表面设有一层磨耗层14,磨耗层14由环氧树脂和玻璃颗粒或者环氧树脂和有机塑料颗粒组成,以用于减少材料磁化影响、提高线圈耦合的传输效率;
磨耗层14的厚度为2cm,发射线圈5与磨耗层14下表面的垂直距离为5~6cm。
本发明中,采用的方法是直接将预制路面板1铺筑于路基上,走向与行车方向一致,在预应力管道2内部穿入预应力钢绞线3张拉,使多块面板连接成整体,为电动汽车提供专用的行驶车道,矩形圆角平面螺旋的发射线圈5布置在预制路面板1的中间,使其与电动汽车底部的接收线圈10充分耦合谐振,达到电能无线传输的目的。
参见图3和图4,发射线圈5与其相匹配的第一电容6串联,并与高频逆变电路7、第一整流滤波电路8连接,最外端接入电网9。接收线圈10与其匹配的第二电容11串联,并与第二整流滤波电路12、负载装置13连接。线圈与电容串联中的补偿电路如图6所示。
如图5所示,为本发明所用磁耦合谐振式无线电能传输技术为现有技术,按照其原理,具体电能的传输过程如下:交流电通过电网9输入发射线圈5,低频高压交流电通过第一整流滤波电路8变成低频高压直流电,低频高压直流电通过高频逆变电路7变成高频交流电,再通过发射线圈5与接收线圈10的耦合谐振,在接收线圈10内部产生高频交流电,高频交流电再通过第二整流滤波电路12变成直流电,给负载装置13进行充电。
参见图1,发射线圈5埋设于预制路面板1的中部,此处位置可以避免车轮的碾压,在一定程度上减少车轮荷载对线圈的损坏,当电动汽车在跨越两块面板时,底部的接收线圈10可同时接收两块面板的电磁场,可以确保传输功率。
为确保两个线圈之间的耦合效率,线圈之间的垂直间距应保持不变,由于本发明中的装配式面板材料采用的是水泥混凝土,水泥中含有的铁铝酸四钙可被磁场磁化,从而影响传输效率,因此,覆盖在发射线圈5顶部的水泥混凝土不宜过厚,如图2所示,预制路面板1的顶部设有一层2cm厚度的磨耗层14,用来替代水泥混凝土,磨耗层14采用环氧树脂以及玻璃颗粒或有机塑料颗粒组成,可减少因材料磁化影响线圈耦合的传输效率。
无线电能传输所需的交流电由系统的高频逆变电路产生,直流电经过逆变电路后转变成高频的交流电压传递到发射端的谐振网络,由发射端线圈产生交变磁场,通过磁场耦合到接收线圈实现电能的无线传输,本实施例中所采用的逆变电路是全桥逆变电路,全桥逆变电路传输效率高,容易控制,功率密度大,成本价格合理。
除上述实施例外,本发明还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围。
Claims (10)
1.一种磁耦合无线充电的装配式路面,其特征在于:
包括装配式的预制路面板(1),预制路面板(1)内设有一组预应力管道(2),预应力管道(2)内设有一组预应力钢绞线(3);
预应力管道(2)的上方设有一个保护槽(4),保护槽(4)连于预制路面板(1)内的中部并沿行车方向设置;
保护槽(4)内设有一组发射线圈(5),发射线圈(5)与第一电容(6)串联,形成耦合机构,第一电容(6)再依次连接高频逆变电路(7)、第一整流滤波电路(8)及电网(9);
电动汽车的底部连接一组与发射线圈(5)相对应的接收线圈(10),接收线圈(10)与第二电容(11)串联,形成耦合机构,第二电容(11)再依次连接第二整流滤波电路(12)和负载装置(13);
发射线圈(5)和接收线圈(10)均采用矩形圆角平面螺旋线圈,且二者之间通过磁耦合谐振式无线发电。
2.根据权利要求1所述的磁耦合无线充电的装配式路面,其特征在于:
所述预制路面板(1)的上表面设有一层由环氧树脂和玻璃颗粒或者环氧树脂和有机塑料颗粒组成的磨耗层(14)。
3.根据权利要求2所述的磁耦合无线充电的装配式路面,其特征在于:
所述发射线圈(5)与磨耗层(14)下表面的垂直距离为5~6cm。
4.根据权利要求2所述的磁耦合无线充电的装配式路面,其特征在于:
所述磨耗层(14)的厚度为2cm。
5.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
所述预应力管道(2)相互平行,且均布于预制路面板(1)内。
6.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
所述保护槽(4)为硬质绝缘塑料槽。
7.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
所述发射线圈(5)与第一电容(6)串联中、以及接收线圈(10)与第二电容(11)串联中的补偿电路均为ss型拓扑结构。
8.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
相邻两块预制路面板(1)之间通过凸榫和凹槽结构相连。
9.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
所述发射线圈(5)和接收线圈(10)的谐振频率相同。
10.根据权利要求1~4任一项所述的磁耦合无线充电的装配式路面,其特征在于:
所述负载装置(13)为蓄电池。
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