1. What is an outdoor power supply?
The outdoor power supply is actually a large power bank. What we often use to charge our mobile phones is a small power bank - small and exquisite, even smaller than a mobile phone;
The medium-sized power bank is used to charge the laptop, which is larger than the mobile phone power bank and has a higher battery capacity.
However, if you go out for camping, barbecues or picnics, the battery capacity of small and medium-sized power banks is not enough. At this time, you need a power bank with a large capacity that can charge a variety of devices. At this time, an outdoor power bank is born.
If a precise definition is given, the outdoor power supply is:
A device that allows you to use electricity safely anytime, anywhere outdoors.
A portable power station that can hold a huge amount of energy.
A device that will keep you away from power scares in areas outside the city, where there are no electrical outlets.
2. Application scenarios of outdoor power supply
The application scenarios of outdoor power supply mainly include: car emergency, long-distance self-driving, home backup power, mobile office, short-distance travel, etc., and even stall lighting, emergency repair and rescue. I guess it's called an "outdoor" power supply because its advantages are more pronounced outdoors.
like:
When the car battery is dead, it can be used to recharge the battery.
When shooting outdoors, it can be used to supplement power for drones, cameras, lighting equipment, etc., to ensure the power supply at any time.
When camping in the wild, when you want to cook delicious dishes with your own ingredients, you can power the kitchen appliances.
In addition, it is also very practical to put it at home. When the mains power is interrupted in an emergency, the outdoor power supply can be filled in time.
3. What product parameters do you need to pay attention to before purchasing?
battery capacity
Outdoor power supply and UPS uninterruptible power supply have a lot in common, and they mainly focus on two points: one is battery capacity, and the other is power.
The battery is the core of these power supply devices. The size of the battery capacity determines how long it can output power and how long it can last.
Considering that the outdoor power supply can be placed in the trunk of the car, the volume does not need to be a priority, so if the size does not matter, try to choose a power supply with a capacity of 500wh or more.
Taking an outdoor power supply of 500W to 600W and an outdoor power supply with a battery capacity of about 500Wh to 600Wh as an example, the power supply duration reference:
A 100W device can supply power for about 4-5 hours, a 300W device such as a rice cooker can supply power for about 1.7 hours, and a mobile phone can be charged more than 30 times.
A 100W device can provide power for about 7-8 hours, a 300W device can provide power for about 2-3 hours, and a mobile phone can be charged more than 60 times.
A 100W device can be powered for about 15 hours, a 300W device can be powered for about 5-6 hours, and a mobile phone can be charged more than 100-150 times.
power
Power represents the wattage W, which is different from watt-hour Wh and milliampere mAh. Wattage represents the output power of the outdoor power supply. If you want to drive a lot of electronic equipment, it is recommended to choose an outdoor power supply above 500w.
A 500W outdoor power supply can generally bring a 500W rice cooker and an 800W hair dryer.
An outdoor power supply of more than 1000W can generally carry a 1000W electric kettle and induction cooker.
An outdoor power supply of about 1200W-2000W can generally carry a 1300W microwave oven and a 1600W electric oven.
battery type
Except for a few electronic devices such as UPS, which use lead-acid batteries, most of them use lithium batteries. The same is true for outdoor power supplies, which are basically lithium batteries.
Most of the batteries used in the current outdoor power supply are cylindrical lithium-ion batteries 18650 lithium batteries, also known as ternary lithium batteries; there are also lithium iron phosphate batteries.
These two lithium batteries are relatively mainstream lithium batteries.
Ternary lithium batteries have many advantages, such as high battery density and large energy output, but their high temperature stability is poor, and they are not as safe as lithium iron phosphate batteries.
Compared with ternary lithium batteries, lithium iron phosphate batteries are safer and have better charge and discharge performance, but the battery density is low.
These two lithium batteries have their own advantages, but for outdoor power supplies, you don't need to care about which kind of battery it is.
shell
This may seem unimportant, but it is actually very important. Outdoor power supplies are different from general electrical appliances. The low voltage DC 12V needs to be boosted to 220V AC. In this process, about 10% of the heat energy is wasted. In addition to using fans to dissipate heat, if aluminum alloy materials are used, more heat can be dissipated to ensure the safety of lithium batteries.
Outdoor power supplies are generally used outdoors or in vehicles, and it is inevitable that they will be bumped, dropped, squeezed, and even more extreme cases will be bumped and crushed. In order to protect the lithium battery cells inside, there must be a strong and strong shell.
Static electricity will inevitably be generated during travel, and static electricity will pose a fatal threat to the circuits in the outdoor power supply, and the metal casing is naturally anti-static.
To sum up, the combination of aluminum alloy + ABS & fireproof PC plastic is the most ideal choice for the heat dissipation, sturdiness, anti-static and lightness of the aluminum alloy shell.
output port
There must be more ports for outdoor power supplies, at least five, the more the better. The ideal configuration that can meet the needs to the greatest extent should be:
· There are 2 AC sockets.
· There is 1 DC interface.
· There is a 12V car charger.
· There are more than two USB ports.
· 1 Type-C interface, preferably a fast charge above 60W.
size and weight
The volume and weight of the outdoor power supply increase with the increase of the parameters, for example, the 1000W one is obviously larger than the 500W one.
Considering that there are basically cars in the application scenarios of outdoor power supplies, this factor is not particularly important, just put it in the trunk.
