Do you know the high temperature lithium batteries?

You may know about lithium batteries, lithium iron phosphate batteries, lithium polymer batteries, and so on, but have you heard about high-temperature lithium batteries? Today xiaobian give you a general knowledge of high temperature lithium battery.

1. The high temperature battery overview

High temperature battery, generally can be divided into 100 ℃, 125 ℃, 150 ℃, 175 ℃, 200 ℃ and above and their environment using five levels, currently adopted by the extensive use of a high temperature battery electrochemistry system for lithium/thionyl chloride and lithium/sulfuryl chloride (chloride) two kinds. Electrochemical system, all this is because in the current of the two systems was the highest specific energy, temperature range is the most widely used, the storage time is longest, working voltage for the highest.

Below is equal to 100 ℃ using battery, do not need special design, general battery properly improvement can be used in the market.

Below is equal to 125 ℃ using battery, as long as in conventional battery production process based on appropriate adjustments and control, can produce qualified products.

150 ℃ and 175 ℃ using battery, you may need to special design.

Above 180 ℃ and 200 ℃ using battery, because the melting point of lithium as negative 180.5 ℃ is not suitable for, should be used in this kind of battery lithium alloy as the cathode. Due to domestic demand is not strong, and this alloy production needs higher safety protection measures, therefore has not been carried out the work 2. High temperature battery principle

From the point of the samples of foreign contact, most of the battery is 150 ℃.

Oil downhole battery, the key is how to meet the requirements of downhole high temperature environment, to ensure the battery safe and reliable work.

In order to meet the requirements of high temperature, should consider the following factors:

(1) The contents of battery thermodynamic properties

(2) The mechanical performance of the battery shell

(3) Adapted to the environment of high temperature safety design (short circuit resistance, resisting extremely, charging resistance, impact resistance, resistance to vibration, etc.)

(4) Adapted to the high temperature environment electrical design (is the cathode active material ratio, the choice of the electrode thickness, the selection of additives, etc.)

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