Recently, the epidemic situation across the country has suffered a "cold spring", and the epidemic prevention policy has become more and more tightened, but the approaching May Day holiday still stirs people's hearts. When "local festivals" become the norm, people urgently need a way to pass this rare five-day holiday that will not lead to the gathering of people and can "live up to the spring". Bringing your family around the city to find a "peach blossom garden" that only you know has become the best choice for many people in addition to hiding at home during this extraordinary period.
If you happen to be driving an electric car, and this electric car happens to have a reverse discharge function (no, it doesn't matter, the end of the article tells you the solution), then congratulations, this electric car in addition to your means of transportation, it can also be a large mobile power. With this power bank, you can bring any household appliances to the "peach blossom source" that belongs only to you, throw away the shackles of the mask, "cover the sky, take the ground as the seat": cook rice with an electric rice cooker, boil the hot pot with an induction cooker, make a cup of Espresso with a coffee machine, support the curtain for a hearty game duel, and even versailles as a rescue car, charge other electric cars... These are all camping scenes that are difficult to achieve in the era of fuel vehicles.
The extender hybrid is more like a power bank with its own small generator.
What is the advanced operation of reverse discharge?
If you want to achieve these scenarios in the era of fuel vehicles, the sufficient but not the only condition is to carry a small generator with the car, why can these scenes be easily realized in the era of electric vehicles? A feature called reverse discharge (V2L) makes new energy vehicles a very large mobile power supply.
Overseas, electric vehicles have become an integral part of the city's power grid.
V2L, or Vehicle to Load, means Load. V2L actually belongs to the category of V2X. What is X? X can be, in addition to L (load), H (home), V (vehicle), G (grid). In simple terms, V2L is to use electric vehicles as a mobile power supply to power electrical appliances; V2H is to use electric vehicles as a household UPS, and the current storage of mainstream electric vehicles has been almost equivalent to the electricity consumption of a family of three for half a month to a month; what is V2G? When the number of electric vehicles integrated into the grid is large, a large number of electric vehicles can play the role of a power grid reservoir, store energy when the grid load is low, and release the stored electrical energy into the grid when the grid load is high, and the owner can also earn a part of the difference.
Electric vehicles play an important role in energy storage in the urban power grid.
Speaking of V2L, using electric vehicles as a mobile power supply to power electrical appliances is more closely related to our use scenarios. At present, the models with reverse discharge function on the market have their own inverter, which can convert the DIRECT CURRENT output of the battery pack into 220V 50Hz AC, so as to realize the power supply of electrical appliances.
The reverse discharge function expands the use scenarios of new energy vehicles, and the "large charging treasure" is well deserved.
Is the vehicle inverter behind the power?
Some people have to ask, the traditional fuel vehicle has a 12V power supply, another car inverter can get 220V 50Hz AC power, to achieve the function of boiling water to cook rice, can not achieve similar reverse discharge function? In the era of fuel vehicles, people want to get 220V 50Hz AC power with the car, in addition to those models with 220V sockets, the inverter is the only solution. However, subject to the maximum power limit of the 12V power interface, there is no problem with the external laptop office, and it is far from enough to face the power of the rice cooker with seven or eight hundred watts, and there will also be security risks.
The 12V power supply interface in the car is usually recommended to withstand a maximum power value of 120W, so it cannot be used for high-power consumers.
Maybe some people have to ask, buy a high-power sine wave inverter directly connected the input terminal to the output of the DC battery, so that it can drive high-power electrical appliances? It is undeniable that the power supply system of many RVs is achieved by increasing the power inverter outside the large-capacity DC battery placed under the seat, such an operation can indeed meet the temporary boiling water to cook rice, but there are great limitations, and the capacity of the DC battery determines the length of time of power supply.
Subject to the capacity of lead-acid batteries, it is difficult for fuel vehicles to provide sufficient support for high-power appliances outdoors.
Take the maintenance-free lead-acid battery used in most fuel vehicles on the market at present, the capacity is usually 60AH, and the output voltage of 12V can be roughly calculated to calculate the amount of electricity carried: 12×60÷1000 = 0.72kWh, that is, less than one kilowatt-hour of electricity. This 0.72kWh of power can only make a rice cooker rated at 800W work for less than an hour. If you want to use this method to power the induction cooker with a rated power of 2200W, you can only theoretically persist for less than 20 minutes without considering the conversion loss of the inverter.
The Tesla Model 3 battery pack consists of thousands of 18650 lithium-ion battery packs, which are connected in parallel every 69 cells into a group, and the 9 groups are connected in series into a layer, and finally stacked in series.
If you change to Tesla Model 3, the capacity of the ternary lithium-ion battery pack is 78.4kWh, which is equal to 78.4 kWh, if the induction cooker with a rated power of 2200W is powered, the induction cooker can be used to work at full capacity for 35.6 hours; if the rice cooker with a rated power of 800W is powered, according to the ordinary rice cooker to cook a pot of rice for fifty minutes, you can cook about 120 pots of rice continuously. (Note: Tesla Model 3 does not have a reverse discharge function, here is only to use the battery capacity as an example)
Although these data are calculated without considering loss, it can also be seen that the advantages of electric vehicle reverse discharge compared with traditional fuel vehicle on-board inverters are derived.
What are the most representative models that support reverse discharge?
In fact, reverse discharge is not the exclusive function of pure electric models, in some hybrid models, plug-in hybrid models have similar functions appear in the configuration list, and in the actual use process, they each have different product attributes.
Ideal ONE
Battery capacity: 40.5kWh
Maximum discharge power: 2.2kW
The new Ideal ONE is the model with the largest battery capacity in the extended-range plug-in hybrid model, with a power of 40.5kWh that even exceeds some pure electric models. Unlike pure electric models with reverse discharge, the extended-range plug-in hybrid model comes with a generator, and there is no problem of power anxiety at all. The car also comes with an external discharge adapter.
Lynk & Co 06 PHEV
Battery capacity: 11.3kWh
Maximum discharge power: 3.3kW
The Lynk & Co 06PHEV can be discharged with the charging gun that comes with the car. As a plug-in hybrid model, the Lynk & Co 06PHEV has the advantage of being able to generate electricity at any time like the ideal ONE, but compared with the extended-range plug-in hybrid model, the power generation efficiency of the Lynk & Co 06PHEV is not as good as the ideal ONE, and the battery capacity is relatively small.
2022 Xiaopeng P5
Battery capacity: 57.4kWh, 61.3kWh
Maximum discharge power: 2.2kW
When it comes to the reverse discharge function, Xiaopeng may be the first car company to make a fuss in this field. In addition to the reverse discharge function, Xiaopeng P5 can also be equipped with official customized auto-clear projectors, car-mounted curtains, car-mounted projector mounts and other accessories on some models. However, car projectors and reverse dischargers need to be purchased separately.
BYD Han EV
Battery capacity: 85.4kWh
Maximum discharge power: 6kW
It is understood that BYD Han EV is currently the domestic mass production car can achieve the largest reverse discharge power model (Ford F-150 Lighting has a maximum discharge power of up to 9.6kW), through the BYD Han EV comes with the "mobile power station discharge plug", can achieve the maximum power of 6kW discharge, and in addition to being able to achieve V2L, can also achieve V2V. Not only that, BYDHan also provides a 220V AC socket in the car with a maximum power of 2kW, and it can also use higher power appliances during driving.
How can a new energy vehicle without a reverse discharge function realize the power extraction function?
Not all new energy models support reverse discharge, so how can it be achieved for those models that do not have a discharge function? Xiaobian found related accessories in Ma Yun's home. According to communication with the store, this accessory has a built-in decoy chip that takes power from the battery pack by issuing charging instructions to the new energy vehicle and making it mistakenly think it is to be charged. Interestingly, this accessory is suitable for almost all electric models currently on sale, with a nominal discharge power of up to 5kW.
This kind of discharge plug that can be applied to most electric vehicles can be used as an emergency, but the reliability has yet to be examined.
Although sellers attach relevant product monitoring reports to the product page, we have reservations about the safety of similar accessories. Whether the use of this accessory discharge will cause harm to the battery pack, whether it is safe to use high power for a long time, whether circuit protection measures are set up internally, etc., these issues are worth considering before purchasing. However, for those models that do not have a reverse discharge function in the original factory, this is indeed an emergency solution worth considering.
This accessory has a built-in deceptive chip that takes power from the battery pack by issuing charging instructions to the new energy vehicle and mistaking it for charging.
Conclusion: In the holiday when we can't travel far, the advantages of new energy vehicles have been highlighted, and new energy vehicles with super mobile power attributes can provide more diverse ways for our short-distance travel. Some people may be worried that the power consumption of electrical appliances will shorten the remaining endurance and affect the return journey, in fact, many models with reverse discharge can set up similar power protection functions, below the set power situation will automatically turn off the reverse discharge function, so as to ensure that the remaining power to meet the needs of the return trip. As introduced in the article, V2L is only an application scenario in V2X, and we hope to see that Whether V2L, or V2H, V2V, V2G, can become a part of the future new energy life.