Device and method for eliminating by-pass current in reserve battery

Abstract

The invention discloses a device for eliminating by-pass current in a reserve battery. The device comprises a liquid reservoir, an electrolyte distribution tube, electrolyte branch pipes and a battery pack, wherein the plurality of electrolyte branch pipes are arranged in parallel; the battery pack is formed by a plurality of single batteries; each electrolyte branch pipe is connected with one single battery; the inner surface of each electrolyte branch pipe is provided with a metal coating. The invention also discloses a method for eliminating the by-pass current in the reserve battery. The method comprises the steps of after the batteries are activated, equally distributing an electrolyte solution in the liquid reservoir to all the electrolyte branch pipes by using the electrolyte distribution tube, and respectively injecting the electrolyte solution into the corresponding single batteries in the battery pack by using the electrolyte branch pipes; using reaction products, generated in a reaction between the electrolyte solution passing through the electrolyte branch pipes and the metal coatings arranged on the inner surfaces of the electrolyte branch pipes, to block the electrolyte branch pipes so as to block a common flow channel. The device is simple in structure, and the method is simple and reliable; after the device and method are adopted, an insulating substance can be produced in the electrolyte flow channel so as to block the electrolyte flow channel, so that the by-pass current is eliminated.

Description

technical field [0001] The invention belongs to the technical field of disposable batteries, and in particular relates to a device for eliminating bypass current in a reserve battery and a method for eliminating the bypass current in the reserve battery. Background technique [0002] After the reserve battery is activated, the electrolyte flows into the distribution pipe and is evenly distributed to each battery cell through the distribution pipe. Due to the existence of a common flow channel, when the electrolyte is injected into each battery cell, the electrolytes are connected in series. When there is a potential difference between each battery cell, due to the conductivity of the electrolyte, the directional movement of ions between the battery cells is formed, forming a bypass current, which limits the improvement of the total energy density and power of the battery. [0003] In order to reduce or eliminate the bypass current, the impedance of the electrolyte channel c...

AI Technical Summary

Problems solved by technology

[0005] However, prolonging the length of the flow path of the electrolyte and reducing the cross-sectional area will increase the resistance of the liquid flow, and can only reduce the bypass current; while the method of free-falling the electrolyte to cut off the flow is complex in structure and requires a high volume. longer time

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