A gasoline car needs the help of a car starter to start its engine. Automobile starter converts pure electric energy into mechanical energy to start the engine. The power required for the starter is provided by the small battery that comes with the car. Many people leave the car for a long time, and the battery voltage is too low to reach the starting voltage, so the car can't start.
Therefore, it is very important to maintain the battery voltage to ensure that the vehicle can land instantly. Under normal circumstances, when the vehicle battery is cold started, if the voltage is above 1 1.3V, the voltage can still be started normally. If it drops below 1 1V, it is very likely that it will not start, so you can only ask for help.
There is a special one that can be tested like a mobile phone battery (it can detect the health and charging capacity of the battery). When the battery capacity is generally below 80%, it will be suggested to charge, just like when preparing a new car, if the battery capacity is below 79%, it will be charged. Generally, it takes about two hours from 79 to 100 (single charge). After the engine runs normally, the battery will be charged reversely, but it will not be started if the initial battery capacity is insufficient. Once the car is started, the battery must be charged when driving.
The power consumption of starting a car is similar to that of turning on all electrical equipment in the car. If the electrical equipment is turned off, cars with a volume of less than 2 liters are expected to be fully charged within five to ten minutes, and ordinary fuel vehicles can charge the engine when the engine is idling.
However, due to the low rotating speed, the charging will be very slow (idling for a long time is not good for the engine, and the longest time should not exceed 10 minutes), so idling charging is not recommended. Different models, power load and ambient temperature will directly affect the power consumption at startup. For example, a car with a large displacement will have a large starting current; The starting current in winter will be larger than that in summer.
The starting current of hot car is large, and the starting current of cold car is large; The starting current of high load is greater than that of low load. Assume that the displacement of a vehicle is 1.8L, the battery capacity is 60AH, the battery voltage is 12V, the normal starting current is 300A, and the starting time of each ignition is 3 seconds.
The relevant parameters can be calculated by substituting into the formula: W= 12*300*3= 10800 joules, and the remaining battery power can be intuitively seen from the battery voltage. If the terminal voltage of 12v battery is around 14.5v, then the battery is basically fully charged. At this time, the engine will generally detect the battery in real time and be ready to charge at any time.
If the generator stops working, the battery voltage will gradually drop to about 13.5V, which is the voltage when the battery is fully loaded. With the increase of power consumption, the voltage will gradually decrease. The performance of automobile battery determines whether the engine can run normally. It is a very important part of the car, mainly used to store electric energy. It is impossible to start the car without batteries.
When the engine is not fully started, the battery supplies power to the electrical equipment of the whole vehicle. After the engine is started, the generator supplies power for the electrical equipment of the whole vehicle, and the battery is mainly responsible for starting the engine. Under normal circumstances, the battery can be used for 3-4 years. If the internal resistance and voltage do not reach the limit, they should be replaced. In fact, many car owners think that it is difficult to start the car, not because there is a problem with the battery, but because the electrical equipment continues to consume electricity after the car stops, resulting in no battery, so it is necessary to check the electrical equipment of the car.
For example, is there a camera that can monitor the car when parking, and the lights will go out after parking, so that technicians can check the health of the car every time they repair the car? The battery needs to be removed and replaced. If there are other problems to be detected and solved!