When it comes to car batteries, I think the owners are no strangers. If the car is missing, it is estimated to be very troublesome. Basically, the whole car will be! The car can't start, the car media can't be used, the car lights can't be illuminated, and so on.
In the cold winter, car batteries are more important and more prone to problems.
Will the battery freeze?
The battery will freeze under the following conditions:
1. Adding too much distilled water leads to a decrease in the density of the battery liquid. At this time, the percentage of water in the battery liquid rises, causing the freezing point of the battery liquid to rise.
2. Excessive discharge leads to a decrease in electrolyte density, and an imbalance in the ratio of sulfuric acid to water causes the battery liquid to freeze.
How many degrees Celsius is the freezing point of the battery electrolyte?
The normal battery sulfuric acid concentration is 35%-40%. According to the "sulphate-water mixture freezing point curve", we can know that the freezing point of the electrolyte is between -60 degrees Celsius and -50 degrees Celsius. From the data point of view, as long as the battery liquid density is between 1.25-1.30, it is unlikely to freeze (unless you use the car in the very northern part of China).
However, as the concentration of sulfuric acid decreases, the freezing point of the battery liquid rises, which makes the battery liquid freeze. For example, Beijing's winter minimum temperature is generally below minus ten degrees. When the battery liquid density is as low as 1.10, the battery may freeze. The most common cause of the above changes is the excessive discharge of the battery.
How to avoid over-discharging the battery:
1. Avoid using high-power appliances when parking. High-power appliances include headlights, fog lights, seat heating, audio and air conditioning.
2. Check the headlights and the roof lights in the car before parking. In general, a normal fully charged battery can operate the headlights for two hours. As the rated capacity of the battery decreases, the time during which the headlights can operate normally is shorter. If you forget to turn off the headlights after parking, the vehicle's computer will not automatically turn off the lights, and the chances of not being able to drive the next morning will be 99%.
3. If the vehicle is not used for a long time, the negative battery should be pulled out. Due to the weak current consumption in the vehicle circuit system during parking, standing the vehicle for a long time will cause the battery to run out. Therefore, for vehicles that are not used for a long time, we should unplug the battery negative to avoid excessive battery consumption.
Battery maintenance method:
After using the battery for the car for more than 2 years, the capacity and discharge capacity will decrease. General vehicle battery life will not exceed 4 years. Of course, a well-maintained battery will last longer. Let's take a look at the maintenance methods for water-added lead-acid batteries and maintenance-free lead-acid batteries.
Water-added lead-acid battery: focus on battery liquid level and battery liquid density.
The battery liquid of a lead-acid battery is a mixture of sulfuric acid and distilled water. When the battery is discharged, the water will become more and the sulfuric acid will decrease, which will result in a decrease in the density of the battery. When charging, on the contrary, the water will become less and the sulfuric acid will increase. The battery fluid concentration reflects the ratio of water to sulfuric acid in the battery fluid. The normal electrolyte density is 1.28 (summer) / 1.29-1.30 (winter) (in grams per cubic centimeter).
As the owner, we should check the battery level regularly. When the battery fluid is insufficient, add distilled water to the appropriate level. After adding distilled water to the battery, we should check the battery liquid density and keep the battery liquid density within a reasonable range.
Maintenance-free lead-acid batteries: Check the magic eye regularly and keep the battery fully charged.
Since the maintenance-free battery has no water hole and battery liquid level scale. We need to judge the state of the battery through the "magic eye" on the battery. The magic eye is green, indicating that the battery is normal, charging is sufficient; the magic eye is black to indicate that it needs to be charged; the magic eye is white to indicate that the battery needs to be replaced. The discharge capability needs to be detected using a dedicated battery tester.
We generally use a voltmeter to check the battery voltage. Although we can detect the voltage value of the battery, we can't check the battery's load capacity. In order to check the actual condition of the battery, we should use a dedicated battery tester to check the battery's discharge capacity and load capacity.
If you are equipped with a non-maintenance-free battery, you don't have to worry too much or worry about how to maintain it. Under normal circumstances, even if it is a non-maintenance-free battery, it can be “dismissed†in 2-3 years. It can be used as a maintenance-free battery. It can be replaced directly after 3 years.
1.0Mm Pin Header,1.0Mm Pitch Pin Header Connector,1.0Mm Pitch Pin Header Pcb Connector,Double Plastic Rows Pcb Smt Pins Connector
Dongguan City Yuanyue Electronics Co.Ltd , https://www.yuanyueconnector.com