What is the difference between series and parallel batteries?

Series connection needs high power portable devices, which usually made by two or more sections in series for power supply. If use high voltage battery, conductor and the switch can be made in small size. We usually use 42 v and 12 v battery. But the 42 v battery is expensive. Compared the 12 v battery, it will produce more arc on switch. Using the high voltage battery pack will bring another question. It is likely to encounter a section of batteries in the battery failure. It's like a chain, the more batteries in series, the higher the risk of the case has. 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 convey. It is not easy to replace the bad batteries. This is the difference between series and parallel battery, because the new and old batteries are not matching. Generally speaking, the new battery capacity is much higher than the old battery.

parallel

The use of parallel in order to get more power, can put two or more cells in parallel. In addition to the batteries in parallel, another way is to use a larger battery. Due to the limitation of can use battery, this method does not apply to all situations. 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 batteries most suitable for parallel. By four parallel battery, battery voltage keep 1.2 V, and current and running time is increased to four times.

Battery pack examples compared with battery series, battery in parallel circuit, high impedance or "open" battery less affected, but, parallel battery pack will reduce the load capacity, and shorten the operation time. This is like an engine start only three cylinders. Short circuit caused by the damage will be bigger, this is because, when the short circuit, the failure of the battery will quickly run out of battery power, other and cause a fire.

Actually, no matter what is the difference between series and parallel batteries, we will guarantee the consistency of battery series and parallel, for different battery charge to separate, don't be frightened by this trouble, save for a while, the cell damage small, big cause safety problem

1, the series, is constant current, voltage additive; In parallel, is voltage constant, current together

2, although the two 12 v battery series voltage did not change is in order to get higher voltage to the electrical appliances, in more than 100 w will be 10 a current, such as the design value is 12 v input of the inverter, the high to the requirement of switches and wires, so reduce the electric current is the main reason, will be two parallel, but allow normal discharge current is increased one times, if use 24 v current only 5 a. So many places using high voltage electrical appliances (such as electric vehicles) is this truth. But there are some appliances is 12 v. When their power (current) greatly, motor, in order to improve current of battery working hours or single battery is not enough to drive, only 12 v battery, and some of the use of electrical power is larger.

Two series of 6 v battery is 12 v, two of the 12 v battery only parallel voltage is 12 v, the so-called parallel is the positive, the positive connection cathode anode connection.

Two 12 v battery series is in order to get higher voltage to the electrical appliances, only 12 v battery, and some of the use of electrical power is larger, more than 100 w will be 10 a current, the high to the requirement of switches and wires, if use 24 v current only 5 a, so reduce the electric current is the main reason, so many places using high voltage electrical appliances (such as electric vehicles) is this truth. But there are some appliances is 12 v, such as the design value is 12 v input inverter, motor...When their power (current) greatly, in order to improve the battery working hours or single battery current is not enough to drive, will be two parallel, although voltage unchanged, but allow normal discharge current was increased one times.

The difference between battery series and parallel:

The battery in series:

Refers to the battery fore and aft. The positive after the second quarter of the first quarter that the battery of battery cathode, the anode of the battery in the second quarter after the third quarter, the battery anode so on;

Series voltage is equal to the sum of the battery voltage and current is equal to the current flow through each cell;

Section of the battery pack less damage will cause the battery can't use or voltage;

Series can improve the total voltage.

The battery in parallel:

Refers to the connected battery such tail, tail. That is, all the positive phase of the battery connection, all battery cathode are connected.

Parallel voltage is equal to a single battery voltage, electric current is equal to the sum of the battery current.

Battery life, although have been improved, but the damage caused by short circuit current is more serious;

Can improve the total current in parallel.

Battery parallel and serial difference is mainly on the difference in voltage and capacity, and then take the voltage is 3.7 V, the capacity is 3000 mAh the lithium battery, is also two batteries, and if it is two strings, the battery model is: 7.4 V / 3000 mAh, if is two and, model becomes: 3.7 V / 6000 mAh. Series voltage and capacity would increase, parallel increase capacity and voltage constant. But we often use batteries are series such as parallel have: four and three series and so on. The hope can help you

1, the battery in parallel, the voltage is equal, the Ua = Ub = = Uo Uc; Current is the sum of each battery current, namely the Io = Ia + Ib + Ic.A parallel circuit (see figure a battery)

Battery in parallel for constant voltage, the current need to increase.

2, battery series, the electric current is equal, namely Io = Ia = Ib = Ic; Voltage is the sum of each battery voltage, namely Uo = Ub Ua + + Uc.(see figure 2 battery series circuit)

Battery in series is suitable for constant current, voltage need higher occasions.

Either in series or in parallel, the output power of the battery are increased.

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