Battery series and parallel connection method

The new valve control type sealed lead acid battery installation method will directly affect the daily operation and maintenance of the battery, the correct installation method of the battery has an important correlation between performance and battery life. The correct installation method of the battery should pay attention to the following:

(1) the choice of battery method we should choose the same manufacturer, the same model, with the batch of battery, so as to ensure the performance of various consistency among different battery, should try to choose the battery monomer, can convenient in use and maintenance of the process of observation data on each battery; It is forbidden to different manufacturers, different types, different types and different capacity, performance and aging degree of battery in series or parallel, inconsistent performance of battery is not easy to maintain, can affect the life of the battery.

(2) The connection method is preferably to connect the batteries in series, and a suitable battery should be selected, and then the battery packs are formed in series. Generally, only parallel batteries can be used for batteries with a capacity exceeding 1000 AH.

(3) The battery installation location should be placed in a place that is ventilated, dry, away from heat, and is not prone to sparks. The battery should not be placed too densely. The battery should be at least 10mm apart from the battery.

(4) environmental temperature valve control type sealed lead-acid batteries work allowed temperature range should be within 10 to 30 ℃, if the condition allows, the indoor can be installed air conditioning, battery to control the temperature between 22 to 25 ℃. This not only allows the battery to have the best capacity, but also extends the battery life.

(5) The orientation of the battery should be placed in different orientations depending on the geometry of the plates when installing the battery. Long plate type (high) of battery is suitable for using horizontal placement, short plate type (short) battery appropriate USES vertical placement. So can make the valve control type sealed lead battery electrolyte adsorption in the diaphragm are hooked up and down.

(6) The poles of the pole-connected valve-regulated lead-acid battery are connected to each other by a connecting strip. When the pole is fastened, the force is neither too large nor too small. Too much power can lead to a column in the copper set of overflow button, power is too small and will make connection column with extremely poor contact, so installation should use special spanner provided by the manufacturer, or his own set of wrench fastening to force manufacturers to provide reference for kg.

(7) Safety matters because the voltage is high after the battery is connected in series, when loading and unloading the conductive bus, we should use insulated tools and insulated gloves to prevent equipment damage or personal injury caused by short circuit.

The battery is connected in series by connecting the positive pole of the latter battery to the negative pole of the previous battery, and finally leaving only the positive pole of the first battery and the negative pole of the last battery.

Battery has two terminals, a + is positive, marked - is negative. Multiple storage battery can be divided into two series and parallel connection way.

After the batteries with the same parameters are connected in series, the output current is constant, and the output voltage is the sum of the output voltage of each battery. For example, four 12V10A batteries are connected in series, the output voltage is 48V, and the output current is still 10A.

Parameters of the same battery in parallel, is connects all the battery of the positive and negative, respectively. In parallel, the output voltage constant, the output current is the sum of each battery output current. For example, four 12 v10a battery in parallel, the output voltage is 12 v, output current is 40 a.

On the serial-parallel problem of the battery: You have two 6V batteries. If you want to still be 6V, if you want to increase the capacity, then you should connect them in parallel. That is connected to the anode and the anode, cathode and anode is connected. If want to increase the voltage, then put two batteries in series, in theory, is to put the two battery voltage, that is to say, be 12V. Specific connection as follows: the first the anode to the cathode and the second is linked together, the first of the positive and the second negative respectively connected to the corresponding positive and negative of electrical equipment. If the connection is correct, there was a spark on the final pole, this is normal phenomenon.

In the battery pack is the multiple batteries together, get the required operating voltage. If the need is higher capacity and greater current, it should put the battery in parallel. There are some battery packs, the series and parallel combined the two methods. A laptop battery is likely to be the four 3.6V Lithium ion batteries together, the total voltage of 14.4 V. And then, the two sets of parallel, in series with the battery, the battery pack of the total electricity capacity can be increased from 2000 MAH to 4000 MAH. This connection is called "four string two and", it means: the two groups by the four batteries in series with the battery in parallel.

In watches, backup storage and generally use cellular phone batteries. Section of nickel-based batteries nominal voltage is 1.2 V, alkaline battery is 1.5 V, silver oxide battery is 1.6 V, is 2 V lead acid battery, lithium battery is 3 V, and lithium ion battery of the nominal voltage is 3.6 V. Using lithium ion polymer and other types of lithium batteries, its rated voltage of 3.7 V commonly. If you want to get is not common, like the 11.1 V voltage, the battery will have to put three quarters in series. With the development of modern microelectronics technology, we can already section with a 3.6 V lithium ion battery, for cell phone and low-power portable communication power supply products. In the 1960 s, widely used in the illumination meter mercury batteries, for reasons of environmental protection, now completely withdraw from the market.

Nickel-based batteries of the nominal voltage of 1.2 V or 1.2 V. Between them, in addition to market preferences, no difference. Most commercial battery, each section of the battery voltage of 1.2 V. Industrial battery,special and battery military battery, each section of the battery voltage is 1.25 V.

In series

Need high power portable devices, usually is made up of two or more batteries together battery power supply. If use high voltage of the battery, the size of the conductor and the switch can be done is very small. Mid-priced industrial electric tools generally use voltage of 12 V to 19.2 V battery power supply; And advanced electric tools to use voltage of 24 v to 36 v battery, in order to obtain more electricity. The automotive industry eventually increased the ignition battery voltage of the starter from 12V (actually 14V) to 36V, even 42V. The battery pack is composed of 18 together lead acid batteries. In the early days of the hybrid cars, used to power battery pack, the voltage is 148V. The battery packs used in the newer models have voltages ranging from 450V to 500V, mostly nickel-based chemical batteries. A voltage of 480 v metal nickel hydrogen battery is nickel hydrogen battery series by 400.There are some hybrid cars also have done test with lead acid batteries.

The 42V car battery is expensive, and it produces more arc on the switch than the 12V battery. Another problem with using a high-voltage battery pack is that it is possible to experience a failure of a certain battery in the battery pack. It's like a chain, in series with the battery, the more the higher the risk of the case. As long as the battery has a problem, it will reduce the voltage. In the end, a section of the "disconnect" battery may interrupt current conveyor. To replace the batteries are "bad" is never easy, because the old and new battery is not matching. Generally speaking, the new battery capacity than the old battery is much higher.

Look at an example of the battery pack, the third section battery voltage 0.6 V, rather than the normal 1.2 V (figure 1).As the voltage drop, it more quickly than normal battery reaches the end of the discharge point, at the same time, its use time is shortened dramatically. Once the device is powered off due to low voltage, the remaining three good batteries will not be able to send the stored power. At this time, the third battery also exhibits a large internal resistance. If the load is also present at this time, the output voltage of the entire battery chain will be greatly reduced. In a set of serial battery, a section about the worse performance of battery, like a plug pipe plug, will produce a great resistance, prevent current flow in the past. The third cell will also be shorted, which will reduce the terminal voltage to 3.6V, or disconnect the battery pack link and cut off the current. The performance of a battery pack depends on the performance of the worst battery in the battery pack.

In order to get more power, you can put two or more cells in parallel. In addition to the batteries in parallel, another way is to use a larger battery. This approach does not apply to all situations due to the limitations of the battery that can be used. In addition, the large size of the battery doesn't suit to make the appearance of special batteries need specifications. Most of the chemical battery can be used in parallel, and lithium ion battery is the most suitable for parallel. The battery pack consisting of four cells in parallel maintains a voltage of 1.2V while the current and running time is increased to four times.

Examples of battery packs have a lower impact on high-impedance or "open-circuit" batteries in battery parallel circuits compared to battery series, but parallel battery packs reduce load capacity and reduce run time. This is like an engine that only starts three cylinders. The damage caused by the short circuit of the circuit will be greater, this is because, in the event of a short circuit, the faulty battery will quickly deplete the power of other batteries and cause a fire.

The page contains the contents of the machine translation.