The following question is normal temperature battery will meet problem, so the friend needs ultra-low temperature lithium batteries still have to pay attention to a problem, the so-called work at low temperature (20 ℃ / - 30 ℃ and 40 ℃) refers to at the time of discharge, at the time of charging is not charged under 0 ℃, and for charging the anode under 0 ℃ will produce sharp crystal, leading to prick the diaphragm resulting in short circuit, specific reference is as follows:
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Charging temperature: 0 ~ 60 ℃
Ultra-low temperature lithium battery is introduced
Lithium battery is through the positive metal lithium embedded negative form potential of such a process, is known as the voltage, the nominal voltage of 3.7 V of lithium-ion batteries, the charging voltage of 4.2 V, discharge cut-off voltage of 3.0 V, rechargeable lithium ion is the positive guided by electrolyte for lithium ion through the diaphragm embedded negative, produce high voltage; Discharge is negative when lithium-ion guided by electrolyte through the diaphragm to the anode, lithium ion is called a loop back and forth, so the life of the common lithium ion battery is 500 cycles.
Low temperature lithium battery is to point to: in 40 ℃ to 30 ℃ / - also can effectively discharge under the condition of work, which is mentioned on the cathode of lithium ion can also run to the anode, generally we can't meet of lithium batteries are on the market - 30 ℃ / discharge to 40 ℃, is normal - 20 ℃ can still small discharge current, discharge standard is 0.2 C discharge, if the 0.2 C standard 1000 mah battery discharge is 200 ma, discharge, and the conventional battery discharge in - 20 ℃ can only reach 65% ~ 70% of the energy, is due to the too low temperature of battery internal resistance increases, the electrolyte frozen, so there are a few common questions:
1、The battery internal resistance at low temperature is larger；
2、Battery capacity at low temperature is low;
3、Battery at low temperature can only standard discharge current;
4、Battery voltage at low temperature platform will be lower;
Conventional discharge temperature: - 20 ℃ ~ 65 ℃;
Low temperature discharge temperature: - 40 ℃ ~ 65 ℃;
Working current shall not exceed the capacity of 2 c current;
