The method of serial parallel connection of low-temperature lithium batteries

    Low-temperature lithium battery in parallel: the voltage remains unchanged, the battery capacity is added, the internal resistance is reduced, and the power supply time can be extended. The low-temperature lithium battery is connected in series: the voltage is added, and the capacity remains unchanged. In order to obtain more power, multiple batteries may be connected in parallel.

    In addition to parallel batteries, another choice is to use larger batteries, because the possible use of batteries is limited, and this method is not practical for all utilization programs. In addition, large-size batteries are not suitable for the shape factor required by batteries.

    Most chemical batteries can be used in parallel, and low-temperature lithium batteries are suitable for parallel use. For example, the battery voltage of the five batteries connected in parallel is maintained at 3.6V, and the current is five times higher than the running time.

     High impedance or open; the impact of the battery on the battery's parallel circuit is less than that of the battery in series. However, the parallel battery pack can drop the load capacity and shorten the running time.

     When adopting the series parallel connection method, the design mobility may reach the rated voltage and current required for the standard battery size. Be atte, because the different connection methods of low-temperature lithium battery spot welding machine to produce low-temperature lithium battery will not change the total power. Power is voltage multiplied by current. For low-temperature lithium batteries, the series parallel connection method is very common.

    The commonly used battery pack is the 18650 low-temperature lithium battery, which has a maintenance circuit and a low-temperature lithium battery maintenance board. The low-temperature lithium battery maintenance board may monitor each battery connected in series, so its actual voltage is 42V.

    The low-temperature lithium battery maintenance circuit (i.e. low-temperature lithium battery maintenance board) can also be used to monitor the condition of each battery connected in series.

    When using 18650 low-temperature lithium batteries in series, the following basic requirements must be observed: the voltage should be consistent, the internal resistance should not exceed 5 milliohms, and the capacity difference should not exceed 10 milliamps.

    The other is to stick to the connection point of the battery, and each connection point has a certain resistance. If the connection point is not clean or the connection point increases, the internal resistance may be very high, which may affect the function of all low-temperature lithium battery packs.

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