A kind of electrolytic solution for aluminum electrolytic capacitor

An aluminum electrolytic capacitor and electrolyte technology, applied in the field of electrolyte, can solve problems such as increased electrolyte vapor pressure, capacitor valve failure, capacitor failure, etc., achieve good low temperature performance, small changes in various parameters, and good stability Effect

CN107256799BActive Publication Date: 2018-10-30DONGGUAN HEC CONDENSER CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-10-30

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Abstract

The invention discloses an electrolyte used for an aluminium electrolytic capacitor. The electrolyte comprises solvent, main solute, auxiliary solute, and optimization additive. The main solute is a compound expressed by a formula (1), and the electrolyte mainly composed by the main solute expressed by the formula (1) is advantageous in that the high temperature performance of the working electrolyte is improved, and a produced capacitor product has longer high temperature-resistant service lifetime. (img file=DDA0001341960870000011. TIF wi=1110 he=247).
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Description

technical field

[0001] The invention relates to the technical field of electrolytic solutions, in particular to an electrolytic solution for aluminum electrolytic capacitors. Background technique

[0002] Aluminum electrolytic capacitors are essential components in the terminals of various electronic products, and play a vital role in applications such as industry and power supply. In recent years, with the rapid development of small-volume, high-stable performance technologies in new technology fields such as high-voltage inverters, electric vehicles, wind power, and photovoltaic power generation, manufacturers have proposed high-voltage, large-ripple current, and high-voltage capacitors for capacitors. Long life requirements. The working electrolyte of the capacitor is called the "blood" of the capacitor. It not only serves as the actual cathode of the capacitor, but also has the function of repairing the oxide film of the anode foil and carrying conductive ions. Therefo...

Examples

Embodiment Construction

[0046] What is described below is the preferred implementation of the present invention, and the protection of the present invention is not limited to the following preferred implementation. It should be pointed out that for those skilled in the art, some modifications and improvements made on the basis of this inventive concept all belong to the protection scope of the present invention. The raw materials used in the examples are all commercially available.

[0047] The electrolyte composition of comparative example and the embodiment of the invention, as shown in table 1:

[0048] Table 1 embodiment electrolyte formula

[0049]

[0050] Note: Formula (V)

[0051]

[0052] The characteristics and changes of the electrolytic solution of the present invention after being stored at a high temperature of 115°C are shown in Table 2. The comparative example, Example 1 and Example 2 are represented by L1, L2, and L3 respectively.

[0053] The corresponding rate of change cu...