Metal/air battery pack

Abstract

The invention discloses a metal / air battery pack, wherein the metal / air battery pack comprises more than two single batteries which are connected in series. The single battery comprises a hollow cuboid single battery shell; a metal anode which is arranged in the shell and is vertical to the bottom of the single battery shell; air cathodes which are arranged at left side and right side of the metal anode and are parallel to the metal anode, wherein the two air cathodes are arranged on the wall surface of the shell, and an electrolyte cavity is composed of the single battery shell and the internal parts of the air cathodes; an electrolyte clapboard arranged at the bottom of the electrolyte cavity in the shell, wherein the electrolyte clapboard is in sealed connection with the inner wall surface of the front end and the inner wall surfaces at the left end and the right end of the shell, an air gap is reserved between the electrolyte clapboard and the inner wall surface of the rear end of the shell, the electrolyte clapboard divides the electrolyte cavity into an electrolyte reaction cavity and an electrolyte circulation cavity, one end of the electrolyte reaction cavity and one end of the electrolyte circulation cavity are communicated, and the electrolyte reaction cavity is communicated with the rear end of the electrolyte circulation cavity; injection / drainage holes which are oppositely arranged at the far end of the communication part of the electrolyte reaction cavity and the electrolyte circulation cavity, namely the left and right side wall surfaces of the electrolyte circulation cavity at the front end of the shell, wherein the injection / drainage holes are located on the wall surfaces, where the two air cathodes are also located, of the shell in the electrolyte circulation cavity. The injection / drainage holes of the more than two single batteries which are connected in series are successively in serial sealed connection, and therefore, the electrolyte circulation cavities at the bottom of the whole battery pack form an injection / drainage communicated channel. Compared with the prior art, the metal / air battery pack has the advantages that the single batteries in the battery pack are modularized and can be replaced rapidly, the anodes can be rapidly replaced through rapid contact elements, the battery pack itself can realize electrolyte injection and drainage management, continuous, stable and long time discharge can be realized, and the cyclic utilization efficiency is improved.

Description

technical field [0001] The present invention relates to a metal / air battery pack. Specifically, it is a metal / air battery pack in which single cells such as magnesium, aluminum, and zinc can be replaced. 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. my country's magnesium, aluminum, zinc and other metals are rich in reserves and low in price. Therefore, metal / air batteries have 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. 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...

AI Technical Summary

Problems solved by technology

The restrictive factors for rapid anode replacement are mainly the shape change of the anode after the reaction, it is not easy to extract, and it is necessary to ensure the rapid realization of current collection; the discharge of the reaction product of the traditional metal / air battery mainly turns the upper end of the battery pack upside down, and discharges the electrolyte and reaction products. Liquid also needs to be injected into each single cell one by one. The process of injecting and draining liquid is cumbersome, time-consuming and laborious, which seriously affects the efficiency of battery use.

[0008] 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

[0009] 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 in severe cases, it may also cause a short circuit in the battery pack. Therefore, metal / air batteries require good sealing to meet user requirements, and it is difficult to achieve sealing when the anode wire is extended out of the single cell to collect current.

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