Electrochemical energy storage device

Abstract

The utility model relates to the technical field of energy storage devices, in particular to an electrochemical energy storage device which comprises a shell, a core bag is placed on the inner side of the shell, and a rubber plug is placed on the top face of the core bag. A positioning structure is installed on the outer side of the shell and comprises a base, the base is movably installed on the lower side of the shell, a positioning ring is integrally formed in the middle of the top face of the base, threaded rods are fixedly installed at the two ends of the top face of the base, and a sleeve is placed on the upper side of the shell; and a top column is fixedly installed on the top face of the inner side of the sleeve, an extraction opening is formed in the top face of the sleeve, and the upper end of the threaded rod is in threaded connection with a threaded sleeve. The sleeve is fixed on the shell through the threaded rod and the threaded sleeve, the sealing gasket is matched, the sleeve and the shell can be sealed internally, manual pressing is not needed, more labor is saved, and operation convenience can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to an electrochemical energy storage device. Background Art

[0002] Existing energy storage devices are sealed directly after liquid injection. Gas will be generated when the battery is formed, forming internal pressure, which has a great impact on safety performance. During the battery cycle, the internal pressure will increase, the battery cycle life will be reduced, and the shell will be easily damaged and deformed during manufacturing.

[0003] In this regard, China's patent application number: CN202022050056.1 discloses an electrochemical energy storage device, which relates to the technical field of energy storage devices, including a shell and a vacuum auxiliary accessory, wherein a sealing plug, a core bag and a tape are provided inside the shell, a lead-out wire through hole is provided in the middle of the sealing plug, and the top of the core bag is fixedly connected with a positive lead-out wire and a negative lead-out wire, and the positive lead-out wire and the negative lead-out wire both pass through the sealing plug to the outside of the shell through the lead-out wire through hole, and a sealing position is provided on the outside of the top of the shell, and a sealing fixed edge is provided on the top of the shell, and the vacuum auxiliary accessory is composed of a pressure rod, an exhaust pipe, a vacuum cavity, a rubber plug limiting push rod and a sealing ring, and the rubber plug limiting push rod is fixedly connected to the inside of the vacuum cavity, and the pressure rod is fixedly connected to the middle of the top of the vacuum cavity. This utility model solves the problem that the existing electrochemical energy storage device has a large internal pressure that affects the service life and safety performance, and the problem that the shell is easily damaged and deformed.

[0004] The energy storage device seals the vacuum cavity and the inner side of the shell by manually pressing the vacuum auxiliary accessories, which facilitates the extraction of air through the exhaust pipe. However, during use, the effect of air extraction depends on the stability of pressing the vacuum auxiliary accessories. If it becomes loose, the sealing cannot be guaranteed, which will affect the vacuum effect and the use of the device.

[0005] Therefore, in order to solve the above problems, an electrochemical energy storage device is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide an electrochemical energy storage device to solve the problem that the energy storage device in the prior art mentioned in the above background technology manually presses the vacuum auxiliary accessories to seal the vacuum cavity and the inner side of the shell, so as to facilitate the extraction of air through the exhaust pipe. However, during use, the effect of air extraction depends on the stability of pressing the vacuum auxiliary accessories. If looseness occurs, the sealing cannot be guaranteed, which will lead to the vacuum effect and further affect the use of the device.

[0007] To achieve the above object, the utility model provides the following technical solution: an electrochemical energy storage device, comprising: a shell, a core package is placed inside the shell, and a rubber plug is placed on the top surface of the core package;

[0008] A positioning structure is installed on the outer side of the shell, and the positioning structure includes a base. The base is movably installed on the lower side of the shell, a positioning ring is integrally formed in the middle of the top surface of the base, threaded rods are fixedly installed at both ends of the top surface of the base, a sleeve is placed on the upper side of the shell, a top column is fixedly installed on the inner top surface of the sleeve, an air suction port is provided on the top surface of the sleeve, and a threaded sleeve is threadedly connected to the upper end of the threaded rod.

[0009] Preferably, a sealing position is provided on the outer wall of the shell, the shell is placed inside the positioning ring, and the top surface of the rubber plug is lower than the top surface of the shell.

[0010] Preferably, a sealing gasket is provided on the bottom surface of the sleeve, and the bottom surface of the sealing gasket is in contact with the top surface of the shell.

[0011] Preferably, the upper end of the threaded rod passes through the sleeve, and the bottom surface of the top column fits with the top surface of the rubber plug.

[0012] Preferably, the bottom surface of the threaded sleeve fits with the top surfaces at both ends of the sleeve.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model fixes the sleeve on the outer shell by setting a threaded rod and a threaded sleeve, and cooperates with a sealing gasket to ensure the sealing between the sleeve and the outer shell, and does not require manual pressure, which is more labor-saving and can ensure convenient operation.

[0014] The utility model is provided with a positioning structure, the core package is placed in the shell, the rubber plug is placed on the upper side of the core package, the shell is placed on the inner side of the positioning ring, and the sleeve is covered on the top surface of the shell, so that the sealing gasket on the bottom surface of the sleeve is in contact with the top surface of the shell, and the upper end of the threaded rod passes through the sleeve, the threaded sleeve is rotated, and the threaded sleeve pushes the sleeve downward, and the sleeve can squeeze the sealing gasket, so that the sleeve and the shell are sealed, and the bottom surface of the top column abuts against the top surface of the rubber plug, no manual pressure is required, which is more labor-saving and can ensure the convenience of operation;

[0015] The vacuum port is connected to a vacuum machine, which extracts the air in the shell and the sleeve through the vacuum port, and the sealing position is mechanically squeezed to seal the device under the action of the rubber plug. Air is then injected through the vacuum port to release the pressure, the threaded sleeve is unscrewed, the device is taken out, and then the upper end of the shell is sealed. The gas generated when the battery is formed will be balanced with the vacuum formed in the existing shell cavity. The safety performance caused by gas expansion is greatly reduced, the battery cycle life is increased, and the problem of high internal pressure affecting service life and safety performance is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a front cross-section of the structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structural explosion of the utility model.

[0019] In the figure: 1, shell; 11, core package; 12, rubber plug; 2, positioning structure; 21, base; 22, positioning ring; 23, threaded rod; 24, sleeve; 25, top column; 26, exhaust port; 27, threaded sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , an embodiment provided by the utility model:

[0022] The shell 1, core package 11 and rubber plug 12 used in the present application are products that can be directly purchased on the market. Their principles and connection methods are existing technologies well known to those skilled in the art, so they will not be described here in detail.

[0023] An electrochemical energy storage device comprises: a shell 1, a core package 11 is placed inside the shell 1, and a rubber plug 12 is placed on the top surface of the core package 11;

[0024] A positioning structure 2 is installed on the outer side of the shell 1, and the positioning structure 2 includes a base 21, which is movably installed on the lower side of the shell 1. A positioning ring 22 is integrally formed in the middle of the top surface of the base 21, and threaded rods 23 are fixedly installed at both ends of the top surface of the base 21. A sleeve 24 is placed on the upper side of the shell 1, and a top column 25 is fixedly installed on the inner top surface of the sleeve 24. An air suction port 26 is provided on the top surface of the sleeve 24, and a threaded sleeve 27 is threadedly connected to the upper end of the threaded rod 23. The sleeve 24 is fixed to the shell 1 by the threaded rod 23 and the threaded sleeve 27. In combination with the sealing gasket, the sleeve 24 and the shell 1 can be sealed without manual pressure, which is more labor-saving and can ensure the convenience of operation.

[0025] Furthermore, a sealing position is provided on the outer wall of the shell 1 , the shell 1 is placed inside the positioning ring 22 , the top surface of the rubber plug 12 is lower than the top surface of the shell 1 , and the positioning ring 22 provides a guide limit for the installation of the shell 1 on the base 21 .

[0026] Furthermore, a sealing gasket is provided on the bottom surface of the sleeve 24 , and the bottom surface of the sealing gasket is in contact with the top surface of the housing 1 . The provision of the sealing gasket can ensure the sealing between the sleeve 24 and the housing 1 .

[0027] Furthermore, the upper end of the threaded rod 23 passes through the sleeve 24, and the bottom surface of the top column 25 fits with the top surface of the rubber plug 12. The threaded rod 23 is a guide limiter for the installation of the sleeve 24 on the shell 1, and the top column 25 is used to fix the installation of the rubber plug 12 on the inner side of the shell 1.

[0028] Furthermore, the bottom surface of the threaded sleeve 27 fits with the top surfaces of both ends of the sleeve 24, and the threaded sleeve 27 fixes the installation of the sleeve 24 on the housing 1 to ensure the sealing line without manual pressing.

[0029] Working principle: Before use, place the core pack 11 in the shell 1, place the rubber plug 12 on the upper side of the core pack 11, place the shell 1 inside the positioning ring 22, and cover the top surface of the shell 1 with the sleeve 24, so that the sealing gasket on the bottom surface of the sleeve 24 fits with the top surface of the shell 1, and the upper end of the threaded rod 23 passes through the sleeve 24, rotate the threaded sleeve 27, and the threaded sleeve 27 pushes the sleeve 24 downward, so that the sleeve 24 can squeeze the sealing gasket, so that the sleeve 24 and the shell 1 are sealed, and the bottom surface of the top column 25 abuts against the top surface of the rubber plug 12, without manual pressure, which is more labor-saving and can ensure the convenience of operation;

[0030] The vacuum port 26 is connected to a vacuum machine, and the vacuum machine extracts the air in the shell 1 and the sleeve 24 through the vacuum port 26. The sealing position is mechanically squeezed and the device is sealed under the action of the rubber plug 12. Then, air is injected through the vacuum port 26 to release the pressure. The threaded sleeve 27 is unscrewed, the device is taken out, and then the upper end of the shell 1 is sealed. The gas generated when the battery is formed will be balanced with the vacuum formed in the existing shell 1 cavity. The safety performance due to gas expansion is greatly reduced, the battery cycle life is increased, and the problem that the high internal pressure affects the service life and safety performance is solved.

[0031] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. An electrochemical energy storage device, comprising: An outer shell (1), a core package (11) is placed on the inner side of the outer shell (1), and a rubber plug (12) is placed on the top surface of the core package (11); Features: A positioning structure (2) is installed on the outer side of the shell (1), and the positioning structure (2) comprises a base (21), the base (21) is movably installed on the lower side of the shell (1), a positioning ring (22) is integrally formed in the middle of the top surface of the base (21), threaded rods (23) are fixedly installed at both ends of the top surface of the base (21), a sleeve (24) is placed on the upper side of the shell (1), a top column (25) is fixedly installed on the inner top surface of the sleeve (24), an air extraction port (26) is provided on the top surface of the sleeve (24), and a threaded sleeve (27) is threadedly connected to the upper end of the threaded rod (23).

2. An electrochemical energy storage device according to claim 1, characterized in that: A sealing position is provided on the outer wall of the shell (1), the shell (1) is placed inside the positioning ring (22), and the top surface of the rubber plug (12) is lower than the top surface of the shell (1).

3. An electrochemical energy storage device according to claim 1, characterized in that: A sealing gasket is provided on the bottom surface of the sleeve (24), and the bottom surface of the sealing gasket is in contact with the top surface of the housing (1).

4. An electrochemical energy storage device according to claim 1, characterized in that: The upper end of the threaded rod (23) passes through the sleeve (24), and the bottom surface of the top column (25) fits the top surface of the rubber plug (12).

5. An electrochemical energy storage device according to claim 1, characterized in that: The bottom surface of the threaded sleeve (27) fits the top surfaces of both ends of the sleeve (24).

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