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Battery terminology

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  1.Chemical power supply(also known as battery):a device that directly converts chemical energy into electrical energy.

  2.Primary battery(also known as primary battery):a kind of battery that can only be used for discharging and can not be recovered and reused by charging after discharging.

  3.Secondary battery(also called rechargeable battery):a battery that can be recovered and reused by charging after discharging.

  4.Open circuit voltage:when the external circuit is disconnected,the potential difference between the positive and negative poles of the battery.

  5.Load voltage:when the battery outputs current,the potential difference between the two extremes of the battery.

  6.Nominal voltage(also known as rated voltage):the minimum value of specified battery open circuit voltage.

  7.Termination voltage:in the battery discharge test,the load voltage to terminate the discharge is specified.

  8.Storage life:the storage life of the battery under the specified conditions.At the end of storage,the battery can still maintain the specified performance.

  9.Nominal capacity:under certain conditions,the minimum amount of electricity that the battery should give.

  10.Internal resistance:the resistance between the two poles inside the battery.

  11.Cycle life:the number of charge and discharge cycles the rechargeable battery can achieve before failure.

  12.Self discharge:the phenomenon of capacity loss caused by various reasons under the state of charge or storage.

  13.Discharge rate:the current value required for the battery to discharge the rated capacity within the specified time;or the time required for the battery to discharge the rated capacity according to a certain output current.It is usually expressed by multiplying ratio(c)or time ratio.

  14.Charging rate:the current value required for the battery to be charged to the rated capacity within the specified time;or the time required for the battery to be charged to the rated capacity under a certain current.Generally,it is expressed by multiplying ratio(c)or hourly rate.

  15.Constant voltage charging:a charging method to keep the voltage at both ends of the charger unchanged during charging.

  16.Constant current charging:a charging method in which the charging current remains unchanged during charging.

  17.Trickle charging:a charging method to charge the battery at a constant current at a low charging rate(C/100C/20)to keep the battery fully charged.

  18.Memory effect:the battery will automatically maintain this specific electrical performance after enduring a specific working cycle for a long time.The rated capacity cannot be fully discharged,and only the commonly used discharge depth can be reached.For example,if a battery with a rated capacity of 100%is charged before it is used up,the battery will"remember"the"scale"in the long run,and it will not be easy to charge when it is recharged later.

  19.Alkali climbing(leakage)solution:the electrolyte in the battery flows out from the external surface of the battery or battery components that are not in contact with the electrolyte under normal conditions.

  20.Battery/battery pack:more than two batteries are connected in series and in parallel to provide the required operating voltage and current.Generally speaking,the battery only refers to a single battery.

  Discharge current:how much current discharge is needed in the discharge process.

  21.Safety valve:the designed vent hole is put on the battery cover.When the air pressure released inside the battery reaches a certain value,the vent valve will automatically open to vent the gas.

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