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Electrochemical energy storage device

An electrochemical and energy storage technology, applied in the direction of electrolytic capacitors, hybrid capacitor terminals, hybrid capacitor collectors, etc., can solve the problems of mutual conduction between the cover plate and the shell, the complex structure of the aluminum cover plate, the failure of the capacitor, etc., to prevent Deformation, reduced leakage risk, cost reduction effect

Pending Publication Date: 2019-08-16
AVX NEW ENERGY (CHENGDU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the electrodes of the capacitors at both ends are usually made of aluminum cover, and the outer shell is also made of aluminum. The cover and the shell need to maintain a sealed connection, and an insulating pad needs to be set between the two, but the cover There may still be a risk of mutual conduction with the case, causing the entire capacitor to fail
And the structure of the aluminum cover plate is complex and expensive

Method used

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  • Electrochemical energy storage device
  • Electrochemical energy storage device
  • Electrochemical energy storage device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 1-3 As shown, an electrochemical energy storage device includes: an upper connecting column 4, colloidal particles 3 for insulation and sealing, a shell 7 and a winding core 5; the shell 7 is cylindrical and at least one end is provided with an opening, and the colloidal particles 3 and The shell 7 is sealed and connected by the waist curling 9 provided on the shell 7; the winding core 5 is arranged in the inner cavity of the shell 7, and one end of the upper connecting column 4 runs through the rubber particle 3 and is electrically connected to the negative electrode welding sheet 1, and the upper connecting column 4 The other end is conductively connected to the winding core 5, the winding core 5 is conductively connected to the casing 7 through the lower connecting piece 6, and the positive electrode welding piece 8 is penetrated and welded to the casing 7 to realize the conductive connection, and further realize the connection of the positive electrod...

Embodiment 2

[0039] Such as Figure 8 As shown, this implementation is further optimized on the basis of Embodiment 1. This embodiment focuses on the improvements compared with Embodiment 1, and the similarities will not be repeated. In this embodiment, the lower connecting piece 6 is made of aluminum, which can be conductively connected with the positive pole of the winding core 5 by welding. There is a prominent positioning hole 61 in the center of the lower connecting piece 6. The outer diameter of the positioning hole 61 is slightly smaller than the diameter of the central hole of the winding core 5, and can be placed Insert it in the center hole of the winding core 5 to play a positioning role.

Embodiment 3

[0041] Such as Figure 6-7As shown, this implementation is further optimized on the basis of Embodiment 1. This embodiment focuses on the improvements compared with Embodiment 1, and the similarities will not be repeated. In this embodiment, the shell 7 is A first explosion-proof valve is arranged at the center of the bottom, and a second explosion-proof valve is arranged on the side wall of the casing 7 .

[0042] The first explosion-proof valve is the first groove opened on the end side wall of the casing 7, and the thickness of the first groove is less than the end side wall of the casing 7; The second groove, the thickness of the second groove is smaller than the side wall of the housing 7 . Such as Figure 9 and 10 As shown, the positive electrode welding piece 8 is provided with a through third through hole, and the diameter of the third through hole is larger than the outer diameter of the first explosion-proof valve. Ensure that the explosion-proof valve can be ope...

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Abstract

The invention discloses an electrochemical energy storage device and belongs to the technical field of the electrochemical energy storage device. The electrochemical energy storage device comprises anupper connection column, a rubber particle playing an insulating and sealing role, a housing and a roll core. The housing is cylindrical, and at least one end of the housing is provided with an opening; the rubber particle and the housing are in sealed connection through a girded waist turned edge on the housing; the roll core is arranged in the inner cavity of the housing; one end of the upper connection column run through the rubber particle and is eclectically connected with a negative bonding pad, and the other end of the upper connection column is eclectically connected with the roll core; the roll core is eclectically connected with the housing through a lower connection piece; and a positive bonding pad is eclectically connected with the housing. The rubber particle has a good insulation effect, and is simple in structure and low in cost. The upper connection column is used to weld to the lower connection piece, so that internal resistance is low and large current charge and discharge can be realized.

Description

technical field [0001] The invention relates to the technical field of electrochemical energy storage devices, and more specifically relates to an electrochemical energy storage device. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are electrochemical components that store energy through polarized electrolytes. They have high power density, short charging time, and long service life. They are used as auxiliary energy sources in electric vehicles and smart grids. The storage system gets up more and more attention. The structure in which the positive and negative poles of the capacitor are located at the same end of the body is called one-end lead-out capacitance. The disadvantages are large internal resistance, poor high-current discharge capability, and high heat generation; usually two-end lead-out forms are used to solve the internal resistance problem, and the two-end lead-out structure is super The internal resistance of the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/68H01G11/70H01G11/74H01G11/80H01G11/78H01G11/82
CPCH01G11/68H01G11/70H01G11/74H01G11/80H01G11/78H01G11/82H01G11/66H01G11/14H01G11/76Y02E60/13
Inventor 董光勇陈德忠罗俊强向杰赵方辉
Owner AVX NEW ENERGY (CHENGDU) CO LTD