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支持USB-PD的移动电源减轻电池电量焦虑

由  Satoshi Terada 发布  - 08-10-2018 

还有比电池电量低更令人沮丧的吗?好吧,可能有很多东西比低电池电量更沮丧。但我们现在非常依赖移动设备,所以已习惯一有机会就插上电源,以避免低电量警告。从人口统计学之角度看,我们获得满足感的方式可能各不相同,但对电量的焦虑现在是真实和普遍的,我们竭尽全力去避免。

公共场所的插座很受欢迎,比如咖啡店、机场休息室乃至火车站。并非每个人都对此感到高兴,因为一些插座仅适用于可兼容的插头,但总的来说,大多数公司都把它看作是建立客户忠诚度的一种方式,就像免费Wi-Fi一样,已成为人们所期待的。

接入免费电源可能并不难,但这依赖于您携带一个电源适配器。商业公司可能愿意提供电力,但它们不提供适配器。

如果我们不考虑公共电源,那么当您远离电源插座,一直到电量低至最后一格电时,除了与您的数字世界失去联系外,还有别的选择吗?在这种情况下,电力和数据一样有用,但接入电源不像将头探出窗外获取更好的信号那么容易,而且蜂窝网络也无法通过无线方式向智能手机供电,至少目前还不能。

早期的移动通信设备体积大,重量重,耗电量大。只有真正需要经常联络的人才会被吸引成为早期采用者。电池占了大部分重量和大小,由于市场压力迫使手机的尺寸迅速缩小,它们对电池施加了相应的尺寸限制。对于“简单”的手机来说,这不是个大问题,因为(不管您信不信)大多数人只使用手机打电话和接电话,而且它们只需充一次电就能连续使用好几天。功能手机的出现(如最初为人所知那样)结束了这样的时代,可说这是电量焦虑的开始。功能手机使电池电量开始真正变得重要,这不可避免,手机必须一代比一代小。不减小尺寸和重量,那将缩短运行时间。

市场几乎立即采用便携式移动电源应对;一种充电电池(通常是锂电池)装在塑料外壳内,只有一个用途,为移动设备提供充电电源。通过标准化USB配置文件,电源现可存储在一个电池中,并传输到任何可从5V、100 mA电源充电的设备电池中。

随处可见的USB说明移动电源设计已多年没有改变了。然而,USB C (Type-C) 连接器和供电规范的出现将标志着一个时代的结束和一个新时代的开始。电力传输(PD)能动态地改变通过Type C连接器传输的功率,最多可达100 W。更重要的是,它是快速充电的基础。这要求被充电的设备与电源进行协商,而电源又必须提供更高的功率,从而大大缩短充电时间。

激发锂离子电池具有更多能量并不是个简单的过程,因此快速充电只能与正在充电的设备上的处理器协同工作。对于移动电源的设计人员来说,这是个巨大的机遇,同时也带来了特有的挑战。今天的移动电源只需提供稳定的5V电源,但快速充电技术需要视乎设备可处理的功率能力提供各种电压水平和电流。

有电量焦虑症的消费者急切期待这项技术,移动电源制造商正在评估方案,包括如LC709501F这样的方案,LC709501F是移动电源充电控制器,含USB Type-C端口,能提供5V和12V之间的电压范围,支持快速充电,它还支持Quick Charge 3.0 高压专用充电端口A级规格(HVDCP Class A)。

含USB PD的USB Type-C将真正变革消费电子设备,最显著的是便携式和可穿戴设备。随着功能的增加和整体物理尺寸的不断减小,移动电源将更加重要。除了个人设备外,物联网也将由可能需要定期充电的远程终端来支持,移动电源采用含USB PD的USB Type C可能成为新常态。电力维护可以看到人们在用移动电源给物联网终端充电,这是一种新的焦虑。

请访问USB-C方案页,了解关于配件的更多用例。

请观看移动电源方案视频以了解该控制器。

标签:Consumer, Portable and Wireless, Power Supply
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