Manufacturing method for lithium/thionyl chloride battery

A technology of a thionyl chloride battery and a production method, which is applied to the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve problems such as weakening the performance of lithium/thionyl chloride batteries, and achieve improved voltage hysteresis and good discharge. Voltage and discharge capacity, the effect of simple production process flow

Inactive Publication Date: 2016-12-14
SUZHOU JINKEFA LITHIUM BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the above methods can improve certain performances of lithium / thionyl chloride batteries to a certain extent, but some of them weaken the other properties of lithium / thionyl chloride batteries at the cost of "sacrificing" the capacity of lithium / thionyl chloride batteries. some performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for making a lithium / thionyl chloride battery, comprising the steps of: adding calcium chloride with a mass ratio of 0.02 in the production process of the cathode material of the lithium / thionyl chloride battery to prepare lithium / thionyl chloride containing calcium chloride The cathode material of the thionyl chloride battery; in the production process of the electrolyte material of the lithium / thionyl chloride battery, calcium chloride is added, and the calcium chloride reaches saturation in the electrolyte material of the lithium / thionyl chloride battery, and the obtained Electrolyte material of lithium / thionyl chloride battery containing calcium chloride; in a dry environment with a relative humidity of ≤1%, the cathode material of lithium / thionyl chloride battery containing calcium chloride, glass fiber diaphragm, metal lithium anode Wind the battery core together and put it into the battery case; according to the current process, the battery is welded arou...

Embodiment 2

[0042]A method for making a lithium / thionyl chloride battery, comprising the steps of: adding calcium chloride with a mass ratio of 0.03 in the production process of the cathode material of the lithium / thionyl chloride battery to prepare lithium / thionyl chloride containing calcium chloride The cathode material of the thionyl chloride battery; in the production process of the electrolyte material of the lithium / thionyl chloride battery, calcium chloride is added, and the calcium chloride reaches saturation in the electrolyte material of the lithium / thionyl chloride battery, and the obtained Electrolyte material of lithium / thionyl chloride battery containing calcium chloride; in a dry environment with a relative humidity of ≤1%, the cathode material of lithium / thionyl chloride battery containing calcium chloride, glass fiber diaphragm, metal lithium anode Wind the battery core together and put it into the battery case; according to the current process, the battery is welded aroun...

Embodiment 3

[0058] A method for making a lithium / thionyl chloride battery, comprising the steps of: adding calcium chloride with a mass ratio of 0.05 in the production process of the cathode material of the lithium / thionyl chloride battery to prepare lithium / thionyl chloride containing calcium chloride The cathode material of the thionyl chloride battery; in the production process of the electrolyte material of the lithium / thionyl chloride battery, calcium chloride is added, and the calcium chloride reaches saturation in the electrolyte material of the lithium / thionyl chloride battery, and the obtained Electrolyte material of lithium / thionyl chloride battery containing calcium chloride; in a dry environment with a relative humidity of ≤1%, the cathode material of lithium / thionyl chloride battery containing calcium chloride, glass fiber diaphragm, metal lithium anode Wind the battery core together and put it into the battery case; according to the current process, the battery is welded arou...

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Abstract

The invention relates to a manufacturing method for a lithium/thionyl chloride battery. The method comprises the following steps: adding calcium chloride at mass ratio of 0.02-0.05 in a production process of a cathode material, thereby obtaining the cathode material of the lithium/thionyl chloride battery containing calcium chloride; adding calcium chloride till calcium chloride is saturated in an electrolyte material in the production process of the electrolyte material, thus obtaining the electrolyte material of the lithium/thionyl chloride battery containing calcium chloride; winding the cathode material of the lithium/thionyl chloride battery containing calcium chloride, the glass fiber diaphragm and the metal lithium anode into a battery core under a dry environment at relative humidity less than or equal to 1%; packaging into a battery shell; performing girth welding on the battery, injecting the electrolyte material of the lithium/thionyl chloride battery containing calcium chloride into the battery, plugging the hole and welding according to the present technique; at last, storing the lithium/thionyl chloride battery containing calcium chloride into a hot air blower box with the temperature of 54 DEG C for 48h and thus obtaining the end product.

Description

【Technical field】 [0001] The invention relates to the technical field of lithium batteries, in particular to a manufacturing method of a lithium / thionyl chloride battery. 【Background technique】 [0002] Lithium / thionyl chloride (Li / SOCl 2 ) battery is a lithium as an anode, carbon as a cathode carrier, anhydrous lithium tetrachloroaluminate thionyl chloride (SOCl 2 ) solution as the lithium battery electrolyte. Lithium / thionyl chloride batteries have the characteristics of high specific energy, large specific power, stable discharge voltage, and long storage life. They are widely used in military and civilian industries such as aerospace, underwater weapons, navigation equipment, geological exploration, and instrumentation. application. Lithium / thionyl chloride battery is currently the battery with the highest specific energy and specific power in the battery field. [0003] The main problems of lithium / thionyl chloride batteries are voltage hysteresis and safety issues....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0563H01M10/058
CPCH01M10/0563H01M10/058Y02E60/10Y02P70/50
Inventor 肖辉隆燕刚缪文元李兴友王辉东
Owner SUZHOU JINKEFA LITHIUM BATTERY
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