Hello.
This may be due to the following reasons:
The first reason is the self-consumption of electricity by electric vehicles. If we fully charge the electric vehicle, it will also consume electricity. if it is not used. The longer the battery is left, the greater the power loss of the electric vehicle will be. If you ride for a few days after being fully charged, it is normal to encounter two battery bars, especially now, electric. Vehicles are becoming more and more intelligent and have positioning devices, speed reminder devices, etc., these will consume energy. If we do not use the electric vehicle for a long time, we must temporarily remove these devices and turn off the leakage protection device. , otherwise it will cause power loss and seriously damage the battery.
The second reason is that there is virtual energy when charging electric vehicles. There are generally two possibilities for such a situation: the first is that the charger fails, resulting in incomplete charging of the battery. The light will jump, causing the car owner to falsely believe that it is fully charged. The second is that the weather is cold. The charging environment for electric vehicles should be between 10° and 35° above this ambient temperature. The vehicle heats up and loses water, seriously damaging the battery. If the temperature is lower, the battery will not be fully charged. If the temperature reaches 0°, the battery can only store around 70% of the electricity. These situations will result in the loss of two power bars when the handle is turned.
The third reason is that there is a problem with the battery. If you buy a new electric carrique, you do not need to consider this problem. But if you are using a battery that is already a year old. , then you should first consider the battery issue as mentioned above. It is mentioned that because current batteries are all "cadmium-free", the life of the battery itself is relatively short. Combined with poor charging and driving habits, the possibility. such problems in the battery within a year is very high. If so, the only option is to replace the battery with a new one.
Lithium battery folding electric car runs out of power after a week
New energy pure electric carLithium battery iron phosphatePower loss in winter Start charging quickly when one third of the battery remains. Lithium iron phosphate battery has the advantages of high operating voltage, high densityhigh energy efficiency, long service life, good safety performance, low self-discharge rate and no memory effect.
During the charging process, some lithium ions contained in the lithium iron phosphate are released, transferred to the negative electrode through the electrolyte, and integrated into the carbon material of the negative electrode in at the same time, electrons are released; The positive electrode and reaches the negative electrode of the external circuit to maintain the balance of the chemical reaction. During the discharge process, lithium ions are released from the negative electrode and reach the positive electrode via the electrolyte. At the same time, the negative electrode releases electrons and reaches the positive electrode of the external circuit to provide energy to the outside world.
Charging and discharging principle of lithium iron phosphate battery
Phosph acidoric The charge and discharge reaction of the lithium-iron battery takes place between the two phases of LiFePO4 and FePO4. During the charging process, LiFePO4 gradually detaches from the lithium ions to form FePO4, and during the discharging process, the lithium ions are integrated into FePO4 to form LiFePO4. Battery During charging, lithium ions migrate from the lithium iron phosphate crystal to the crystal surface, enter the electrolyte under the action of electric field force, and then pass through the separator.
Then it migrates to the surface of the graphite crystal through the electrolyte, and then is integrated into the graphite network. At the same time, electrons flow to the aluminum foil collector of the positive electrode through the conductor, flow to the copper foil collector of the negative electrode of the battery through the tab, terminal battery positive, external circuit, negative terminalive and negative tab. , then flow to the negative graphite electrode through the conductor. Balance the charge on the negative electrode.
1. The battery is exhausted, causing the electric bike to lose power as soon as it is used.
If the user is fully charged and does not ride for a while. For a long time, the e-bike showed that it was fully charged, but it lost power as soon as I used it. The main reason is that the battery discharges automatically. If you don't ride for a long time, the battery will lose power at that time, even if the dashboard shows a fully charged state, it is actually just a virtual power supply. the actual power is only 70%, or even less. So how do you resolve this kind of situation? It is necessary to charge it every two weeks to avoid battery loss. Moreover, it is precommended to deeply discharge it once a month.
2. The battery has aged, which causes the electric vehicle to lose power as soon as it is driven.
Generally speaking, when an electric vehicle has been used for many years, the problem Aging of battery will occur, and battery aging is the most common problem. The direct manifestation is that the battery has been vulcanized, which causes the battery performance to decline. It will be fully charged very quickly, but the dashboard will lose immediately. power as soon as you ride. So how do users solve this problem when they encounter it? Pulse repair can be used to remove the crystals, but if the aging phenomenon is severe, the only option is to replace the battery with a new one.
3. Electric vehicle lines become wet, causingcauses the electric vehicle to lose power as soon as it is driven.
Summer is a rainy season and the probability of electric vehicles getting wet is high. also higher than other seasons. If the electric vehicle circuit becomes wet, the resistance of the entire circuit will increase. This means that when the electric vehicle starts, the voltage will be low, resulting in a loss of power from the start. How to resolve this situation? When returning from a rainy day, dry key parts of the e-bike and try to avoid riding in deep water.