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30-Aug-2019  15Comments

How much do you know about waste heat recovery?

 新能源汽车余热回收技术,你了解多少?

How much do you know about waste heat recovery?

新能源汽车逐渐成为主流产品,汽车产业初步实现电动化转型。未来低碳化、信息化和智能化的发展方向,要求新能源客车也将侧重于发展节能技术、电驱动力技术、智能网联技术、动力系统热管理技术、轻量化技术,这势必对客车空调也提出了低能耗、智能控制、动力设备热管理、轻量化的要求。

Now the EV is becoming trending, to reduce CO2 footprint. The sustainable low carbon and intelligent future gives rise to the innovation urge of E buses, and they must focus on energy saving, electric drive, network technologies, power train thermal management, lighter weight so as to become lower energy consumption and smarter.

新能源汽车无法利用发动机余热,一般使用PTC加热器或热泵系统进行制热。但常用的PTC加热器耗电量较大,导致汽车的行驶里程大幅下降,因此制热效率较高的热泵系统将成为新能源汽车空调的发展方向。

Most new energy buses can’t make use of waste heat, and use PTC heater or heat pump to heat at low temperature. But common PTC is always a battery guzzler, leading a compromised travel range, so the heat pump having higher efficiency is what HVAC suppliers should dig in.

为了降低新能源汽车热管理系统能耗,基于整车能量管理的角度,余热回收技术渐渐应用于新能源汽车。高效的余热回收技术是改善新能源汽车热管理系统、提高续航里程的重要路径之一。

CLING finds its way to make use of waste heat.

科林空调致力于行业新技术的研究,新能源汽车余热回收技术采用的方案是将驱动电机和控制器产生的余热通过热交换器与热泵空调系统的冷媒换热,提供低温冷媒蒸发的热量,在结构上可以与热泵空调及电池热管理系统集成,制热时充分利用热泵制热、PTC辅助制热、电机余热三者的互补优势,实现对空调、电池、电机等设备的高效集成热管理,进一步提升了整车能源利用率,降低了整车能耗,在一定程度上增加了车辆的续驶里程,提高了新能源汽车上的能量利用效率。

CLING has always committed itself to R&D of new technology. Our solution is to collect the heat of driving motor and controller, and its heat shall exchange with the coolant of our HVAC system, which offers the heat needed by low temperature coolant to vaporize. We integrate this function with our heat-pump A/C and BTM (battery thermal management) system. During the heating process, our heat pump and PTC plus recovered motor heat work together, meanwhile high efficiency thermal management has been achieved for HVAC, battery and motor, contributing to a lower power consumption and increases vehicle mileage to some extent. Data from our lab says this system can make use of up to 45% engine waste heat, and COP in the heating mode increases by 15%!

余热回收技术是改善新能源汽车热管理系统性能的重要技术之一,它合理利用了新能源汽车上的高温热源的热量,为热泵空调冬季制热提供了一部分热源,改善了新能源汽车的续驶里程,提高了能量利用率。

In summary, this waste recovery technology is an important way to enhance the thermal management of new energy buses. Last year alone, CLING invested 42 million RMB (6 million USD) into R&D. Till now we have developed full series of BTM, E-A/C + defroster, intelligent cloud platform, etc. Let’s look forward to the next achievement CLING may contribute to the bus industry! 

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