The demand for outdoor power is booming, which devices will increase in demand?
Outdoor power supply
According to industry sources, starting from the second half of this year, the domestic sales of outdoor power supplies, which were originally mainly exported overseas, have also begun to boom. Many people may not be very familiar with outdoor power supplies. In fact, in simple terms, it is a large power bank. The difference is that it can output AC and DC, and can support various electronic devices. It can not only charge mobile phones, but also Drive fans, network equipment, laptops, and even cook with a rice cooker, etc.
For application scenarios, in a nutshell, wherever electricity is needed, outdoor power supplies can help solve the electricity demand. For example, it is suitable for outdoor travel scenes such as self-driving camping, RV travel, fishing, hunting, etc. It can power smart phones, tablets, drones, projectors, lights, car refrigerators, rice cookers and other equipment. It can also solve power shortage problems such as power shortage in disasters, power outages, and emergency rescue. If it is combined with solar panels to form a small solar power generation system, in the event of grid breakdown and destruction after the disaster, continuous off-grid power generation can be realized for the life after the disaster, and the basic living needs of the victims can be guaranteed.
Figure: Schematic diagram of outdoor power supply in outdoor scenarios (Source: Huabao New Energy Prospectus)
Outdoor power supply market is booming
Before last year, outdoor power supplies were mainly exported to Europe and the United States, because the European and American outdoor markets are relatively mature, and due to their high degree of urbanization and strong per capita consumption capacity, Europeans and Americans often choose outdoor activities such as outdoor travel, camping, and fishing in their spare time. For example, in the United States, according to the Outdoor Foundation website, the population of the United States who participates in outdoor activities each year remains above 48%. Outdoor power products are very popular in Europe and the United States due to their large capacity, high power, and safe portability.
Compared with the United States, China's outdoor market is still in its infancy. According to statistics from the China Outdoor Federation, 130 million people in my country participate in outdoor leisure activities every year, accounting for 9.5% of the total population. Compared with 48% in the United States, there is still a big gap. However, with the continuous development of my country's economy and the further improvement of per capita spending power, the number of people participating in outdoor activities will continue to increase.
Functional parameters of outdoor power supply
Generally speaking, outdoor power supplies have both AC output and DC output functions. For the AC output function, direct current is passed through an inverter and converted to alternating current for output. You can decide whether to output 220V, 110V, or 100V according to the mains voltage standards of different countries.
The DC output function can output conventional 48V, 24V, 19V, 12V, or 5V through a DCDC converter.
There are many parameters for outdoor power supplies, but general users need to pay attention to the following:
One is power. The greater the power, the more electronic devices that can be powered, and the richer the content of outdoor activities. For example, the car refrigerator has a power of 150W. If the car refrigerator is to be driven, the output power of the outdoor power supply cannot be lower than 150W. At present, the output power of outdoor power supplies generally includes 250W, 500W, 600W, 1000W, 1100W, 1800W, 2200W, etc. According to Sun Zhongwei, Chairman of Fortune New Energy, the current mainstream output power in the market is about 500W, but there is a trend toward large output power.
The second is to look at the battery capacity. The larger the capacity, the longer the power supply time.
The third is to look at the type and quantity of power supply ports. Domestic outdoor power supplies have been fully equipped with 220V AC output. AC ports support most electronic devices such as sockets; USB ports and Type-C ports can support fast charging. Now most of them can support PD and QC fast charging, which can improve the charging efficiency of mobile devices. Some outdoor power supplies also support cars. Charging output; in addition, the charging interface also needs to be paid attention to.
The fourth is to look at the charging efficiency. The mainstream outdoor power supply can use sockets, car chargers, and solar panels to charge itself.
Look at the accessory functions. For example, some outdoor power supplies have added LED lights, some can be monitored in real time through APP, remote control switches, and some support wireless charging.
Outdoor power supply will drive which device demand
From the previous introduction, we probably also know the general situation of the outdoor power supply. First of all, it is an energy storage device, which definitely needs batteries; in addition, because it needs to output AC voltage, it needs the support of an inverter; in addition to these two important components, AC-DC and DC-DC are also needed. , MCU, fast charge main control chip, and MOSFET, etc.
First of all, the safety of lithium battery products is very important, and if you want to achieve higher safety, you need a more accurate battery management system (BMS), which includes the performance of the battery management device itself, which is mainly reflected in voltage, current, and The temperature measurement accuracy. Only when the measurement accuracy is more accurate can the battery protection process be made safer, more reliable and stable, and the battery energy can also be used more fully.
Thirdly, in terms of DCDC devices, Morixin’s senior system and marketing manager Ou Xuechun told electronic enthusiasts that because the battery voltage of the outdoor power supply may reach 54V, it is necessary to choose a high-voltage DCDC controller above 100V; in addition, if there is a smoker interface , It needs to support high current, because the cigarette lighter interface is generally 12V/10A. He also revealed that some customers have already used Mao Ruixin's MK9218 on the cigarette lighter interface. In addition, there are also related chips from manufacturers such as Tuol Micro, Ener Micro, Jiehuate, Silica, Silan Micro, and Nanxin.
The fourth is the PD fast charging main control chip. In recent years, it has developed very rapidly in China. Many chip manufacturers at home and abroad have launched related chips, such as NXP, Dialog, Injixin, Richtek, PI and other manufacturers. Related chips.
Fifth, in fact, almost all outdoor power supplies have a cooling fan, a high-end useful BLDC motor. In the future, as the output power and capacity become larger and larger, it is possible to use liquid cooling to dissipate heat. In the case of liquid cooling, in addition to the coolant, a water pump is also needed to assist the heat dissipation.
