Double parallel and single parallel double electric vehicle lithium batteryThe capacity of the battery cellis higher than that of a single battery cell, which is the double that of a single battery. A single battery cell has only one battery. The dual battery cell is composed of two batteries connected in series or parallel. The capacity of dual battery cell is higher than that of single battery cell, which is twice that of single battery cell. single battery cell. The single battery cell has only one battery. The two-cell battery consists of two batteries connected in series or parallel.
The role of lithium batteries in electric vehicles
The capacity of the mobile power supply is provided by the energy storage unit internal. the core of the battery, that issay battery, refers to a single electrochemical cell containing positive and negative electrodes, which is generally not used directly. Different from batteries which contain protective circuits and casings and can be used directly, lithium-ion secondary rechargeable batteries are composed of cells and protective circuit boards.
Rechargeable batteries remove the protective circuit board and this is the core of the battery. This is the energy storage part of the rechargeable battery. The quality of the battery core directly determines that a double lithium battery is composed of two batteries, a single lithium battery. is a battery, and a double lithium battery is large in size, long life, determined by the power capacity. Lithium batteries connected in parallel can increase the power capacity of the battery.Capacity 35000mAh-55000 mAh.
The purpose of parallel connection of lithium batteries is to increase capacity. Therefore, parallel charging of lithium batteries also has different design features compared to single-cell lithium batteries. charging current design and parallel battery design.
Once the batteries are connected in series, the voltages are added and the currents are equal. This increases the tension. When the batteries are connected in parallel, the voltage remains unchanged (the principle is that the batteries are similar). the voltages can be connected in parallel, otherwise the one with higher voltage will charge the one with lower voltage), it can be dangerous if the difference is too big), the current is equal to the sum of each battery, which can often be considered to increase battery capacityand provide greater current.
Precautions for using lithium batteries
Do not mix batteries and choose batteries with consistent performance. Replace all batteries when they are low. If used in series, use the same battery type. Pay attention to the polarity of the battery. If the polarity of a battery is reversed, it will reduce the voltage of the entire battery string instead of increasing it.
Keep battery connection points clean. When four batteries are connected in series, there are eight connection points (the connection point from the battery to the battery compartment and the connection point from the battery compartment to the next battery). Each connection point has a certain resistance. If multiple connection points are added, it may affect the performance of the entire battery.
Reference for the content above? Baidu-Batter Encyclopediaie lithium