US 12,738,614 B2 · Electrolyte injection apparatus and electrolyte injection method

Abstract

This application relates to the field of battery manufacturing technologies, and in particular, to an electrolyte injection apparatus and an electrolyte injection method. The electrolyte injection apparatus includes an electrolyte injection assembly, a gas extraction assembly, and a gas injection assembly. The electrolyte injection assembly has an electrolyte injection end, the electrolyte injection end being configured to communicate with an inner cavity of the housing. The gas extraction assembly has a gas extraction end, the gas extraction end being configured to communicate with the inner cavity of the housing. The gas injection assembly has a gas inlet and a gas injection end, the gas inlet being configured to communicate with a gas storage container, and the gas injection end being configured to communicate with the inner cavity of the housing, where the gas storage container stores target gas, the target gas being soluble in the electrolyte.

Claims14

Dependent claims

An electrolyte injection apparatus, configured to inject electrolyte into a housing of a battery cell, wherein the electrolyte injection apparatus comprises:

an electrolyte injection assembly having an electrolyte injection end, the electrolyte injection end being configured to communicate with an inner cavity of the housing;
a gas extraction assembly having a gas extraction end, the gas extraction end being configured to communicate with the inner cavity of the housing and place the inner cavity of the housing in a negative pressure state;
and
a gas injection assembly having a gas inlet and a gas injection end, the gas inlet being configured to communicate with a gas storage container that stores a target gas, and the gas injection end being configured to communicate with the inner cavity of the housing and provide the target gas to the inner cavity of the housing;
wherein the gas storage container stores target gas, the target gas being soluble in the electrolyte,
wherein the gas extraction end is directly connected to the housing at a location that is different from a location at which the gas injection end is connected to the housing.

3 more elements

An electrolyte injection method, wherein the electrolyte injection method injects an electrolyte into a housing of a battery cell by using an electrolyte injection apparatus that includes an electrolyte injection assembly having an electrolyte injection end, the electrolyte injection end being configured to communicate with an inner cavity of the housing;

a gas extraction assembly having a gas extraction end, the gas extraction end being configured to communicate with the inner cavity of the housing;
and a gas injection assembly having a gas inlet and a gas injection end, the gas inlet being configured to communicate with a gas storage container, and the gas injection end being configured to communicate with the inner cavity of the housing;
and wherein the gas storage container stores target gas, the target gas being soluble in the electrolyte, and the method comprises:
injecting the target gas into the housing by using the gas injection assembly;
extracting the target gas from within the housing by using the gas extraction assembly;
and
injecting the electrolyte into the housing by using the electrolyte injection assembly.

4 more elements

Dependencies are inferred from the claim text.

Electrolyte injection apparatus and electrolyte injection method

Life of this patent

Electrolyte injection apparatus and electrolyte injection method

Life of this patent

Abstract

Claims14