电动汽车的未来:历史、技术突破与十大优势 veritasium 2019-08-02

电动汽车的兴衰:一段被遗忘的历史

我受邀来到慕尼黑,由本视频的赞助商宝马(BMW: 德国豪华汽车品牌)公司邀请,旨在探究汽车的未来为何是电动化的。

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I was invited here, to Munich, by BMW the sponsor of this video to find out why the future of cars is electric.

然而,电动汽车实际上并非新生事物——它们最早可追溯到1832年,远早于第一辆汽油动力汽车的问世。

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But electric cars are actually nothing new -- they date back to 1832, well before the first gasoline-powered car.

事实上,第一辆时速超过一百公里的汽车诞生于1899年,它是一辆电动车,名为**“永不满足号”**(Jamais Contente: 法语,意为“永不满足”)。

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In fact, the first car to go faster than a hundred kilometers per hour was in 1899, an electric one, called the Jamais Contente, meaning "never satisfied".

但人们显然对电动汽车感到满意。

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But people were apparently satisfied with electric cars.

到了1910年,电动汽车在美国道路上的普及程度几乎是内燃机(Internal Combustion Engine: 一种通过燃料燃烧产生动力的发动机)汽车的两倍。

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By 1910, they were almost twice as common on American roads as internal combustion engines.

然而,随后福特T型车(Model T: 福特汽车公司在20世纪初生产的普及型汽车)的出现改变了局面,它售价650美元,远比同类电动汽车便宜;随着全国各地加油站的兴起,汽油车可以快速加注燃料,使得出行比充电耗时的电动汽车更远、更快、更经济。

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But then came the Model T, which at $650 was significantly cheaper than comparable electric cars and as gas stations popped up around the country, they could be quickly refueled, allowing you to travel farther, faster, and cheaper than electric cars, which took a long time to recharge.

因此,到1935年,电动汽车在商业上几乎销声匿迹。

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So by 1935, the electric vehicle had been commercially obliterated.

但电动汽车在某些方面仍然有用:在太空真空中,电动汽车是阿波罗月球车(Apollo lunar roving vehicle: 阿波罗计划中用于月球表面移动的电动载具)的明显选择。

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But electric cars were still useful for some things: in the vacuum of space, an electric vehicle was the obvious choice for the Apollo lunar roving vehicle.

由于其不可充电的银锌氢氧化钾电池,它是一次性使用的车辆,续航里程仅为92公里。

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It was a single-use vehicle due to its non rechargeable silver zinc potassium hydroxide battery, and it had a range of just 92 kilometers.

但宇航员们从未用到其续航里程的一半。

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But the astronauts never needed even half of this range.

在1972年慕尼黑奥运会上,为了引导马拉松选手,宝马公司制造了一款其二系汽车的电动版本。

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At the Munich Olympics in 1972, to lead marathon runners in their race, BMW created an electric version of its two series car.

这辆车由12块大型汽车电池驱动,最大续航里程为60公里(37英里)。

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The car ran on 12 large car batteries for a maximum range of 60 kilometers, or 37 miles.

这展示了电动汽车的优点:它们可以安静运行,并且零排放。

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This demonstrated the benefits of electric vehicles: they can run quietly with no emissions.

但这也揭示了它们的局限性:在当时可用的电池技术下,电动汽车价格昂贵、续航里程短,不适合日常使用。

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But it also illustrated their limitations: with the battery technology available at the time, electric cars were expensive and short-range, impractical for everyday use.

电池技术驱动电动汽车的强势回归

那么,为什么电动汽车会是未来呢?

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So why are electric cars the future?

2020年,宝马推出了IX3(BMW IX3: 宝马旗下的纯电动运动型多功能车),并计划到2023年将其电动化车型增至25款。

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In 2020, BMW is launching the IX3 all-electric sport utility vehicle, and they plan to have 25 electrified vehicles in their fleet by 2023.

他们的许多概念车,例如Vision M Next(BMW Vision M Next: 宝马的一款高性能概念车),都是电动汽车,而且他们拥有一辆电动方程式赛车(Formula-E car: 一种使用电力驱动的方程式赛车),现在可以在一次充电下完成整个比赛。

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A lot of their concept cars, like the Vision M Next, are electric vehicles and they have a Formula-E car which can now run a whole race on a single battery pack.

所有这些都得益于电池技术的进步。

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This is all made possible by developments in battery technology.

电池性能已大幅提升,尤其是锂离子电池(Lithium-ion batteries: 一种可充电电池,广泛应用于电子产品和电动汽车)的引入。

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Batteries have gotten a lot better, particularly with the introduction of lithium ion batteries.

锂离子电池大约30年前首次应用于手机,其在相同体积下所含能量几乎是次优电池化学成分的两倍。

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First used in mobile phones about 30 years ago, lithium ion batteries have almost two times more energy in the same volume than the next-best battery chemistry.

由于它们在手机和笔记本电脑等众多消费产品中的应用,在制造和供应链优化的推动下,其制造成本持续下降。

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Because of their use in many consumer products like phones and laptops, their manufacturing costs continue to decline, driven by manufacturing and supply chain optimization.

在过去的三十年里,能量密度(Energy density: 单位质量或单位体积内存储的能量)无论是单位质量还是单位体积都显著增加,而价格却大幅下降。

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Over the last three decades, the energy density has increased both per unit mass and per unit volume, while the price has plummeted.

这与内燃机不同,内燃机经过一个世纪的发展,可改进的空间已所剩无几。

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This is unlike internal combustion engines which, after a century of development, have few areas left for improvement.

现实是,人们开车通常不会跑很远的距离。

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And the reality is, you don't really travel that far in a car.

如今的电池技术足以满足除最长途旅行之外的所有需求。

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The batteries available today are good enough for all but the longest road trips.

在美国,99%的行程都在160公里(100英里)以内。

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In the US, 99% of trips are under 160 kilometers, or 100 miles.

电动汽车的十大优势

而且电动汽车本身就是更优秀的交通工具。

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And electric cars are just better vehicles.

以下是我列出的十大理由:

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Here are my top 10 reasons why:

第一:从静止状态即可获得更大的扭矩(Torque: 使物体旋转的力矩,决定加速性能)。

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First: more torque from a standstill.

第二:由于电池位于车底,电动汽车的重心较低,因此操控性更好。

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2. Thanks to the batteries under the floor, they have a low center of mass and so better handling.

第三:由于可以独立驱动电动机,因此可以对每个车轮进行精确控制,以实现最大牵引力。

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3. Since you can drive electric motors independently, you can have precise control over each wheel for maximum traction.

第四:电动汽车更安静。

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4. Electric cars are quieter.

第五:电动汽车的运行成本低于燃油车,因为行驶相同距离所需的汽油费用高于电力费用。

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5. Electric cars are cheaper to run than gas cars, because gas is more expensive than electricity for the same distance traveled.

第六:电动汽车比燃油车更高效,无论是将储存的能量转化为动能,还是在刹车时通过能量回收制动(Regenerative braking: 一种将车辆动能转化为电能储存起来的制动方式)回收部分能量。

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6. Electric cars are more efficient than gas cars, both in converting stored energy into energy of motion and in regenerating some of that energy when braking.

第七:你无需再去加油站,因为可以在家中充电。

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7. You never have to visit a gas station, because you can recharge at home.

第八:维护成本更低:活动部件更少,无需更换机油,并且由于能量回收制动,刹车片磨损频率也更低。

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8. There's less maintenance: fewer moving parts, no oil changes, and the brakes wear out less often thanks to regenerative braking.

第九:而且,根据电力来源(在我的例子中是太阳能电池板),电动汽车完全不产生二氧化碳,因此不会加剧气候变化。

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9. And depending on the source of electricity, in my case, solar panels, electric cars don't produce any CO2 at all, so they don't contribute to climate change.

超越电动化:自动驾驶与共享出行

此外,随着汽车本质上成为“带轮子的电脑”,电动汽车正在引领自动驾驶汽车的发展。

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Plus, as cars become essentially computers on wheels, electric vehicles are leading the way towards self-driving cars.

好的,我们将开始我们的自动驾驶之旅,这是我第一次体验:L4级自动驾驶(Level 4 autonomy: 高度自动驾驶,在特定条件下无需人类干预)。

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Alright we're gonna start our ride in an autonomous vehicle, my first time ever: Level 4 autonomy.

一旦这成为常态,我们对汽车的看法很可能会改变:从我们拥有、大部分时间闲置的物品,转变为出行即服务(Transportation as a service: 一种共享出行模式,用户按需使用交通工具而非拥有),一种我们乘坐以从A点到B点,并与他人共享的工具。

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Once this becomes commonplace, it's likely we'll change how we see cars: from something we own that sits idle for most of its existence, to transportation as a service, something we ride in to get from point A to point B, and something we share with others.

尽管仍有许多细节有待解决,但对我而言,汽车的未来显然是电动化、自动驾驶和共享化的。

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There are still a lot of details to work out, but it's clear to me that the future of cars is electric, autonomous, and shared.

📌 文中提及的人物和组织

公司/组织: BMW, Ford