Low temperature starting current How to detect and what is low temperature starting current

The starting ability of the battery at low temperature is indicated by the low temperature detection current. According to the European standard, a fully charged battery is continuously discharged at minus 18 degrees Celsius for 10 seconds without the voltage dropping below the current intensity. When the car is cold started, the current output of the battery is the maximum.

In general, the new battery at low temperature theory can be judged, but it is difficult to judge, this should be very professional, only after a period of time will there be obvious changes, the battery has a marked rated power, (such as: 6 q 105, its rated power is the battery's electrical energy is mainly determined by the active substance lead dioxide (PBO2) and the reactive substance pure sulfuric acid on the positive plate (referring to the lead-acid battery), inferior batteries are also very good in the early stage, After almost half a year, there will be a lack of starting power, and the charging time is short, and it will be full when it is flushed, and it cannot be fully charged.

With an oscilloscope, the instantaneous current is very accurate.

It's good to find a current Hall.

The battery is discharged at the electrolyte temperature of -18 °C for 30 seconds, and the single-cell voltage of the battery drops to the maximum current intensity that can be released. The unit is An.

I don't know what field. In the case of motors and generators, there is only low-voltage starting (depressurized starting), not low-temperature starting.

This should be operated by a sensitive resistor, the resistance value is low at low temperature, and the resistance value is higher at room temperature, so the current is low at room temperature and cannot work.

Different countries have their own national standard for CCA, and the starting current of 650A is less than 700A: SAE (American standard).2v).

8), when the voltage drops to the limit feed voltage (7, continuous 30 seconds can provide 500A current, the battery voltage drops to the limit feed voltage (7, continuous 30 seconds to release the current amount. 2v). The cryogenic starting current refers to the low temperature state (usually -17) at a specified low temperature state.

The low temperature starting current is generally indicated by the abbreviation CCA (Cold Cranking Ampere), which will be marked on some batteries. For example, a battery has a CCA value of 500 A and DIN (German standard). For example, the most common signs are, EN (European standard).

The starting battery starts at a low temperature, and the higher the current, the better. You can choose a battery of about 120A.

The longer the time required to discharge to the specified termination voltage at the specified current after a certain period of storage at low temperatures, the longer the low temperature starting performance. The minimum current that can be obtained in a particular sense under and conditions. The cold start current is an indicator that compares the starting capacity of the battery with the temperature, displacement, compression ratio and starting time of the engine.

Important variables such as the technical state of the engine and electrical system and the minimum operating voltage for starting and ignition are linked. It refers to the minimum current that can be supplied by the battery when the terminal voltage drops to the full 12V battery within 30s, and the cold start rating gives the total current value.

No, if the current is too much, it will burn out and start cold.

1. Cold start is a way to start the computer, which is to cut off the power of the computer, restart, once the cold start, all the memory things are lost, re-detect the hardware, enter the CMOS, and then start the operating system.

2. The other way is hot start. The difference between cold and hot starts is that hot starts don't detect memory. Cold start refers to the power button on the case.

3. One of the automobile reliability tests, which refers to starting the engine in a low temperature environment, can also be written as cold start.

The greater the cold start current, the easier it is to start in low temperature conditions in winter, and the more expensive it is.

Whether it's good or not, I personally think it's good to be suitable, and the extra functions are all exchanged for money.

Each battery is marked, for example, a 60AH battery, CCA500A, means the cold start current is 500A, a 60AH battery, CCA600A, it means the cold start current is 600A, and so on.

When the car is started, the current of the starter is not related to the temperature.

It's definitely a relationship. But also.

It's not absolutely right, the service life of this battery has a direct relationship with the ambient temperature, my experience is that the new capacity battery is generally about minus 25 degrees Celsius for 24 hours can reach about 85% of the battery's normal, if it is a battery that has been used for a year or two, it is only about 75%.

There is also to see if your car is used every day, if you use it every day, the battery always has a charging and discharging process, which is helpful for the life of the battery. If you don't use it every day, it is recommended to start the car every day or two and run it for about 20 minutes.

The maximum current is known to be more than 400 amperes. To know how big the battery capacity is, you also need to know the discharge time.

Starting current refers to the impulse current of electrical equipment (inductive load) at the beginning of starting, is the amount of current change in the motor or inductive load in a short period of time from the moment of power-on to the smooth operation, this current is generally 4-7 times the rated current, the state stipulates that in order to run the line and the normal operation of other electrical equipment, the high-power engine must be equipped with starting equipment to reduce the starting current. Inrush current is the maximum instantaneous current that passes through the input voltage before it reaches a steady state when the input voltage is turned on or off at specified intervals. The common starting methods of AC motor include direct start, string resistance start, self-coupling transformer start, star-delta decompression start and inverter start to reduce the impact on the power grid

The discharge current of the battery is determined according to the design of the battery, such as; 12V 80A, 12V is the battery voltage 12V, 80A is the discharge current 80A. The capacity of the battery in the cold season of winter will be affected a little. The charging current is determined according to the storage capacity in the battery, so it is normal for the charging current to be sometimes large and sometimes small.

1. The effect is the same: 2. The lower the temperature, the greater the starting current 3. The more battery power, the less charging power will be.

You have to be clear about the two concepts of electric current and electrical energy.