The difference between batteries connected in series and parallel

Connect in parallel: connect the batteries with anode to anode, cathode to cathode, so that the voltage is constant, capacity will increase, so does corresponding current. Connect in series: connect the battery with anode to cathode, so that the voltage increases, but the capacity unchanged. At this moment, electromotive force is the sum of two battery electromotive forces. If connect in parallel, the electric voltage is only one section of the battery electromotive force.

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 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 dry cell is widely applied in life, series and parallel connection is common.

2, series: dry cell battery cathode, anode take section, in turn, which is in series.

Have multiplied the series is that the benefits of the power supply voltage (V), are commonly used to drive the rated voltage large electrical appliances.

3, parallel: generally rated voltage of battery voltage is related to electrical appliances, is the batteries are used in parallel power, in guarantee under the condition of constant voltage, can increase under the rated voltage of electric current, better drive electrical appliances.

4, summary: according to the different requirements of different electrical appliances, to use the series parallel battery, can have unexpected results.

In voltage is the same situation, the use of batteries in parallel, can increase the use of time, and battery series is in order to improve the battery voltage and to use electric voltage matching, if low voltage electrical appliances can't start

The difference between the dry cell in series and parallel:

1, the dry battery series, because every day dry cell has electromotive force and internal resistance, so after dry battery series, advantage is: can provide high voltage; The disadvantage is that: the internal resistance is bigger, make its provide the power and current is affected.

After 2, dry cell in parallel, because in parallel can reduce the battery internal resistance, so it can provide large current and power; The disadvantage is that: with the voltage equivalent of only one section of the dry cell voltage.

The composite group 3, dry cell: dry cell parts series, in parallel connection of battery called mixed together. This can be solved only when using series and parallel can't solve the problem.

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. 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.

Difference from the exterior wiring, as shown in the figure below:

Series battery its voltage is the sum of each battery voltage, output power (power) after that series of associated with the capacity of a single battery is weakest.

Parallel battery voltage is a maximum of each battery voltage, the output of the battery pack is the weakest son battery N times (N is the number of child battery).

Because no matter in series or parallel battery power output are associated with the most some weak batteries battery, should choose condition and performance requirements in the battery pack so nearly may be of the same cell, or performance of the battery pack good (or new) battery is of weak battery power, thus reducing the efficiency of the whole battery pack, adverse also had better battery life.

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.

The same voltage, capacity, battery:

Battery in parallel, the voltage is constant, the current addition;

Addition of batteries in series, the voltage, electric current is constant.

Different capacity of battery in parallel or in series.

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