The difference between parallel and series batteries is mainly the difference in voltage and capacity. Take a lithium battery with a voltage of 3.7V and a capacity of 3000mAh, which is also two batteries. If there are two strings, the battery pack model is: 7.4V /3000mAh, if it is a dual combination, the model becomes: 3.7V/6000mAh. When connected in series, the voltage will increase while the capacity remains the same. When connected in parallel, the voltage will increase while the capacity remains unchanged. But the batteries we often use are in series and parallel, such as: three series and four parallel and so on. Hope to help you.
The parallel battery voltage remains unchanged, which can increase the power supply current
Connecting batteries in series can increase the supply voltage, and the current will not
1. Dry batteries are widely used in life, and series and parallel connections are common connections.
2. Series connection: Connect the positive electrode of the dry battery to the negative electrode of the next battery, and then connect it in sequence. This is the series connection.
The advantage of the series connection is that the voltage (V) of the power supply is doubled, and it is generally used to drive electrical appliances with a larger rated voltage.
3. Parallel connection: Generally, the voltage of the battery is the rated voltage of the related electrical appliances, and the parallel power supply of the batteries is adopted. Under the condition that the voltage remains unchanged, the current under the rated voltage can be increased, and the electrical appliances can be better driven.
4. Summary: According to the different needs of different electrical appliances, the use of battery series and parallel connections can achieve unexpected results.
In the case of the same voltage, using batteries in parallel will increase the use time, and the batteries in series are used to increase the battery voltage to match the voltage of the consumer. If the voltage is low, the consumer cannot start
The difference between series and parallel dry batteries:
1. When dry batteries are connected in series, because each dry battery has electromotive force and internal resistance, the advantages of series connection of dry batteries are: higher voltage can be provided; Influence.
2. After the dry batteries are connected in parallel, because the parallel connection can reduce the internal resistance of the battery pack, it can provide larger current and power; the disadvantage is that the voltage provided is only equivalent to the voltage of a dry battery.
3. Hybrid connection of dry batteries: A battery pack that connects dry batteries partially in series and partially in parallel is called hybrid. This can solve the problems that cannot be solved when only using series and parallel connections. Parallel connection: Several batteries, positive and positive, negative and negative are connected side by side, the voltage remains unchanged, the capacity increases, and the corresponding current also increases. Series connection: Several batteries are connected together in series, which means positive and negative. The negative of the first cell is connected to the positive of the second cell, and so on. As the voltage increases, the capacity remains unchanged. That is to say, if connected in series, the electromotive force is the sum of the electromotive force of two batteries. If connected in parallel, the voltage they provide to consumers is as large as the electromotive force of only one battery. Hope my answer can help you! I am also learning this part of knowledge, it is difficult, I have to work hard! I wish the original poster a successful academic!
To consider the internal resistance of the battery, the output voltage is somewhere in between.
I don’t know if you are a junior high school or a high school. Generally speaking, it’s not required. For high school students, try my explanation below:
For simplicity, let's discuss the two batteries first, the voltage output by the electromotive force E1 U=E2-Ir2=(E1r2-E2r1)/(r1+r2)
The difference between parallel and series batteries is mainly the difference in voltage and capacity. Take a lithium battery with a voltage of 3.7V and a capacity of 3000mAh, which is also two batteries. If there are two strings, the battery pack model is: 7.4V /3000mAh, if it is a dual combination, the model becomes: 3.7V/6000mAh. When connected in series, the voltage will increase while the capacity remains the same. When connected in parallel, the voltage will increase while the capacity remains unchanged. But the batteries we often use are in series and parallel, such as: three series and four parallel and so on.
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