Metal-air battery pack or single battery
A technology for metal-air batteries and single cells, which is applied to battery components, small-sized batteries/batteries, and large-sized batteries/batteries, etc., and can solve electrolyte leakage, battery short circuit, and current collectors Corrosion and other problems can be achieved to reduce maintenance costs, improve battery performance and specific energy, and improve sealing reliability
Active Publication Date: 2020-06-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
[0003] Since the working voltage of a single metal / air battery is only 1-1.5V, when encountering electrical equipment that requires a higher rated voltage, it is often necessary to connect multiple metal / air cells in series to obtain a higher voltage. output voltage, but the fixed metal / air battery pack connected in series is not easy to maintain, and it is not easy to replace if there is a problem with the single cell, so the metal / air battery pack connected in series with single cells can be replaced for the development of metal / air batteries very important
[0004] However, for portable and vehicle-mounted metal / air batteries, due to the random vibration, tilt, impact and other environments, the possibility of electrolyte leakage and splashing increases sharply, and the leakage of electrolyte will not only deteriorate the reaction environment in the reaction chamber, It is more likely to cause corrosion at the collector, and may cause a short circuit in the battery pack in severe cases. Therefore, metal / air batteries require good sealing to meet user requirements.
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[0059] Design the aluminum-air battery single cell, adopt the battery pack structure shown in Figure 2, and stack the two single cells, including a set of upper end plate (1), cathode (2), single cell shell A (3), anode (4) , the sealing ring (5), the single cell case B (6), the single cell case C (7), the single cell case D (8), and the lower end plate (9) are stacked and sealed by the O-shaped hollow sealing ring. The electrode area is 10cm 2 , the distance between the anode and the cathode is 5mm, the electrolyte is potassium hydroxide aqueous solution, the electrolyte circulation channel is provided, the circulation is supplied, and the constant power of 90W is discharged, and the discharge curve of the battery pack is obtained as follows: Figure 4 As shown, the battery was discharged stably for 14h until the anode was completely consumed.
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The invention relates to a metal / air battery pack, and particularly relates to a metal-air battery single battery. The single battery comprises a single battery shell A and a single battery shell B, wherein the single battery shell A and the single battery shell B are both hollow annular plate bodies; after the single battery shell A and the single battery shell B are stacked and hermetically connected from top to bottom, a gap is formed between the lower wall surface of the inner edge of the single battery shell A and the upper wall surface of the inner edge of the single battery shell B, andthe peripheral edges of a sealing component and a metal anode are arranged in the gap; and the sealing component is used for further sealing the single battery shell A and the single battery shell B.According to the invention, a mechanical self-tightening sealing structure is utilized to realize self-tightening sealing of the cathode and rapid replacement of the anode of a stacked aluminum-air battery.
Description
technical field [0001] The present invention relates to a metal / air battery pack. Specifically, it is a stacked battery pack with magnesium, aluminum, zinc, etc. as the anode, which can quickly replace the single cell and the anode. Background technique [0002] A metal / air battery is an electrochemical reaction device that uses metal (such as magnesium, aluminum, zinc, etc.) as the anode fuel, oxygen in the air as the oxidant, and lye or neutral brine as the electrolyte solution. It has broad application prospects in many fields of mobile power sources such as communication power sources, field emergency power sources, lighting power sources and reserve power sources in my country. Metal / air batteries have high energy density, high safety, no pollution to reactants and products, quiet and concealed operation, safe and convenient metal fuel storage, transportation and portability, and long dry storage time, as long as the metal anode and electrolyte are constantly replaced ...
Claims
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IPC IPC(8): H01M12/06H01M2/02
CPCH01M12/065H01M50/10H01M50/112Y02E60/10
Inventor 王二东刘敏孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI