What are the main battery parameters?

The capacity of the battery is usually related to the following factors:

(1) The structure of plate and quantity. When the other conditions are the same, the capacity of the battery depends on the area of the plates and the porosity of the active material, so the plates are usually made thin. The thickness of the lead storage battery is 1.45-3.0 mm.

(2) The discharge conditions. When the battery discharge degree is bigger, because lead sulfate precipitation amount is much, reduce pore cross-sectional area of the plate, from the surface caused by sulfuric acid into plate difficulties. Therefore, when the discharge current increases, the permeability of plate within the pore sulfuric acid consumed per unit time is not enough to compensation amount of sulfuric acid, the battery voltage drops rapidly, and can't continue to discharge. So the discharge current increases, battery capacity reduced.

(3) The electrolyte temperature. Caused by viscosity increases the temperature falls, the electrolyte into the plate is difficult, at the same time, the temperature falls, the electrolyte resistance will increase and make the voltage is reduced, so the capacity of the battery will decrease.

(4) The electrolyte density. Increase the electrolyte density, and can improve the electromotive force of battery and electrolyte penetration of active substances within the plate, and to reduce the resistance of the electrolyte, and make the turtle pond storage capacity increasing. But if continue to increase the density of the electrolyte, will make its viscosity increases, so when the electrolyte density exceeds a certain value, the electrolyte osmotic rate will decrease, and the internal resistance increases, the plate increases, reduce battery capacity. Therefore, only when the electrolyte density is at its best, the battery can get the maximum capacity.

The capacity of the battery voltage of 12v is 2.2AH, 7AH, 14AH, 17AH, 24AH, 32AH, 45AH, 60AH, 80AH, 105AH, 120AH, 160AH, 198AH.

A device that converts chemical energy into electrical energy is called a chemical battery, and is generally referred to as a battery. After discharge, the internal active material can be regenerated by charging - storing electrical energy as chemical energy; and converting the chemical energy into electrical energy when discharging is required. Such a battery is called a battery (storage battery), which is also called a secondary battery.

The so-called battery is an electrical chemical device that stores chemical energy and discharges electric energy when necessary.

The five main parameters of the battery are: battery capacity, nominal voltage, internal resistance, discharge termination voltage, and charge termination voltage. The capacity of the battery is usually expressed in Ah (Ah), and 1Ah is capable of discharging at a current of 1A for 1 hour. The amount of active material in the unit cell determines the amount of charge contained in the unit cell, and the content of the active substance is determined by the material and volume used in the battery. Therefore, generally the larger the battery volume, the higher the capacity is. One parameter related to battery capacity is the charging current of the battery. The charging current of the battery is usually expressed by the charging rate C, which is the rated capacity of the battery. For example, charging a 1Ah battery with a 2A current, the charging rate is 2C; similarly, charging a 500mAh battery with a 2A current, the charging rate is 4C.

When the battery is shipped from the factory, the potential difference between the positive and negative electrodes is called the nominal voltage of the battery. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. When the ambient temperature, the use time, and the operating state change, the output voltage of the unit battery slightly changes. In addition, the output voltage of the battery also has a certain relationship with the remaining power of the battery. The nominal voltage of a unit nickel-cadmium battery is about 1.3V (but generally considered to be 1.25V), and the nominal voltage of a unit nickel-hydrogen battery is 1.25V.

Battery internal resistance is determined by the resistance of the plate and the impedance of the ion flow. In the process of charging and discharging, the resistance of the plate is the same, however, the impedance of the ion flow will be varied with the change of electrolyte concentration and charged ions increase or decrease.

Battery sufficient electricity, the plate on the active material has reached the saturated state, continue to charge, the battery voltage will not rise, at this time of charging voltage is called end voltage. Nickel cadmium battery charging terminated

Voltage is 1.75 ~ 1.8 V, nickel metal hydride battery charging termination voltage of 1.5 V.[table 1-1 nickel cadmium battery discharge termination voltage at different discharge rates

The internal resistance of the battery is determined by the resistance of the plates and the impedance of the ion current. During charge and discharge, the resistance of the plates is constant, but the impedance of the ion current will vary with the change in electrolyte concentration and the increase or decrease of charged ions.

When the battery is fully charged, the active material on the plate has reached saturation state, and then continues to charge, the voltage of the battery will not rise, and the voltage at this time is called the charge termination voltage. The nickel-cadmium battery has a charge termination voltage of 1.75 to 1.8V, and the nickel-hydrogen battery has a charge termination voltage of 1.5V. Discharge termination voltage at different discharge rates of nickel-cadmium batteries the discharge termination voltage refers to the lowest voltage allowed when the battery is discharged. If the battery continues to discharge after the voltage is lower than the discharge termination voltage, the voltage across the battery will drop rapidly, forming a deep discharge, so that the product formed on the electrode plate is not easy to recover during normal charging, thereby affecting the life of the battery. The discharge termination voltage is related to the discharge rate.

The battery parameters are mainly:

1. Battery capacity: It is indicated by Ah (Ah), 1Ah is the current at 1A, usually the larger the battery, the higher the capacity.

2. Nominal voltage: When the battery is just shipped from the factory, the potential difference between the positive and negative electrodes is called the nominal voltage of the battery. The nominal voltage is determined by the electrode potential of the plate material and the concentration of the internal electrolyte. When the ambient temperature, the use time, and the operating state change, the output voltage of the unit battery slightly changes. In addition, the output voltage of the battery also has a certain relationship with the remaining power of the battery.

3, internal resistance: the internal resistance of the battery is determined by the resistance of the plate and the impedance of the ion current. During charge and discharge, the resistance of the plates is constant, but the impedance of the ion current will vary with the change in electrolyte concentration and the increase or decrease of charged ions.

4, charging termination voltage: battery sufficient electricity, the plate on the active material has reached the saturation state, continue to charge, the battery voltage will not rise, at this time of the voltage is called charging termination voltage.

5, discharging termination voltage, discharging termination voltage, is the point at which the battery discharge to allow the minimum voltage. If the voltage is lower than the battery to discharge, discharge termination voltage on both ends of the battery voltage drops rapidly, depth of discharge, in this way, plate on the formation of the products in the normal charging easy to recover, so as to affect the service life of the battery; Discharge end voltage and discharge rates.

The amount of electricity discharged by the battery under specified conditions (including discharge intensity, discharge current and discharge termination voltage) or the length of discharge time is called battery capacity, and the unit is A·H or A·MIN. A car battery is a reversible DC power source that converts chemical energy into electrical energy and electrical energy into chemical energy. It is connected in parallel with the generator.

It supplies power to the starting system and the ignition system during engine start.

When the engine is stopped, it supplies power to the car's electrical equipment.

When there is a demand for electricity exceeding the output of the charging system, the current is supplied by this for a limited period of time.

The battery also absorbs the transient overvoltage in the circuit to keep the voltage of the automotive electrical system stable and protect the electronic components.

Battery don't have to for a long time, it will slowly discharge by oneself, to scrap. At regular intervals, therefore, should start a car, for battery charging. Another way is pulled down the two electrodes on the battery, unplug from the electrode column that should pay attention to both positive and negative electrode thread, to remove the negative line first, or remove negative and chassis connections. Then pull with the positive sign (+), on the other side of the battery service life to a certain extent, to a certain period has to be replaced. When replacement should follow the same order, but in the up electrode wire, order, by contrast, take the positive first, and then connect the cathode.

When the ammeter pointer indicates that the storage capacity is insufficient, it should be charged in time. Battery storage capacity can be reflected in the dashboard. Sometimes found that power is not enough in the way, the engine stalled again won't start, as a temporary measure, can seek help from other vehicles, vehicle battery with them to launch vehicle, connected the two battery anode and the cathode, the anode and the anode is connected.

The density of the electrolyte should according to different regions, different season, according to the standards for the corresponding adjustment.

Distilled water or special rehydration solution and nano-carbon sol battery activator should be added when the electrolyte is deficient. Never use pure water instead. Because pure water contains a variety of trace elements, it will have an adverse effect on the battery.

Uninterrupted use of the starting opportunity when starting the car causes the battery to be damaged due to excessive discharge. The correct method of use is to take no more than 5 seconds for each time the car is started, and the interval between starts again is not less than 15 seconds. In the case of multiple starts and still not in the car, you should find the reason from other aspects such as circuit, ignition coil or oil circuit.

Always check the small holes in the battery cover for ventilation when driving daily. If the small hole of the battery cover is blocked, the generated hydrogen and oxygen will not be discharged, and when the electrolyte expands, the battery case will be broken and the battery life will be affected.

Check the positive and negative levels of the battery for signs of oxidation. You can use hot water to constantly pour the wire connection of the battery.

Check the presence or absence of aging or short-circuiting in all parts of the circuit to prevent the battery from being decommissioned early due to excessive discharge.

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