CN215418482U

CN215418482U - Lithium battery vacuum exhaust device

Info

Publication number: CN215418482U
Application number: CN202121512747.7U
Authority: CN
Inventors: 高峰; 赵冬梅; 陈雨; 张要枫; 袁路路
Original assignee: Hubei Titanium Era New Energy Co Ltd
Current assignee: Hubei Titanium Era New Energy Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-04
Anticipated expiration: 2031-07-05

Abstract

A lithium battery vacuum exhaust device comprises an exhaust box, a lifting device and a vacuum pump, wherein a lithium battery to be exhausted is arranged in the exhaust box, battery fixing devices are arranged on two sides of the bottom of the exhaust box, the lifting device is arranged beside the exhaust box, a cover plate is arranged at the top end of the exhaust box, the cover plate and the exhaust box are controlled to open and close through the lifting device, an anti-reverse device is arranged on the side wall of the exhaust box, one end of the anti-reverse device is communicated with the inside of the exhaust box, the other end of the anti-reverse device is communicated with an exhaust pipe, and the other end of the exhaust pipe is communicated with the vacuum pump; the utility model can simultaneously vacuumize and exhaust a plurality of lithium batteries, has higher automation degree, does not damage the liquid injection ports of the lithium batteries during the exhaust, improves the exhaust efficiency and prolongs the service life of the lithium batteries.

Description

Lithium battery vacuum exhaust device

Technical Field

The utility model belongs to the technical field of lithium battery manufacturing equipment, and particularly relates to a lithium battery vacuum exhaust device.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical characteristics of the metallic lithium are very active, the requirements on the external environment for processing, storing and using the metallic lithium are very high. Therefore, lithium batteries have not been used for a long time. However, with the development of modern science and technology, lithium batteries have become mainstream and are widely used in the fields of electric automobiles, electric tools, household appliances, war industry, aerospace and the like.

The lithium cell can produce a large amount of gases at the in-process of precharging, need in time discharge the inside gas of battery when precharging, otherwise the battery can take place easily and swell and warp, destroys the inner structure of battery even, and traditional exhaust mode has following shortcoming usually:

1. each exhaust process can be performed only once, so that more labor is wasted, and the working efficiency is low;

2. the exhaust process needs manual operation, and the automation degree is low;

3. the negative pressure getter device is directly connected with the liquid injection port of the lithium battery, so that external water vapor is easily introduced into the battery in the exhaust process, and the liquid injection port of the lithium battery is easily damaged in the getter process.

Disclosure of Invention

In view of the technical problems in the background art, the utility model provides a lithium battery vacuum exhaust device, which can simultaneously vacuumize and exhaust a plurality of lithium batteries, has high automation degree, does not damage liquid injection ports of the lithium batteries during exhaust, improves the exhaust efficiency of the batteries, and prolongs the service life of the lithium batteries.

In order to solve the technical problems, the utility model adopts the following technical scheme to realize:

the utility model provides a lithium cell vacuum exhaust apparatus, includes exhaust chamber, elevating gear and vacuum pump, and the lithium cell is installed in the exhaust chamber, and the bottom both sides of exhaust chamber are equipped with battery fixing device, and the other elevating gear that is equipped with of exhaust chamber, the top of exhaust chamber are equipped with the apron, the apron is controlled through elevating gear with opening and shutting of exhaust chamber, and the lateral wall department of exhaust chamber is equipped with prevents contrary device, prevent that the one end of contrary device is linked together with the inside of exhaust chamber, prevent the other end intercommunication exhaust tube of contrary device, the other end intercommunication vacuum pump of exhaust tube.

In the preferred scheme, a sealing notch is formed in the upper end of the air extraction box, and a sealing strip is arranged on the lower end face of the cover plate; after the cover plate and the air extraction box are closed, the sealing strip can be filled in the sealing groove opening and plays a sealing role.

In the preferred scheme, the battery fixing device comprises a push plate, a threaded rod and a rotating disk, holes are formed in two sides of the bottom of the air exhaust box, the threaded rod is installed at the holes and is in threaded connection with the air exhaust box, the threaded rod moves back and forth in the air exhaust box through rotation, the push plate is connected with one end of the threaded rod, and the rotating disk is connected with the other end of the threaded rod.

In the preferred scheme, elevating gear is including the lift base, and the central point of lift base puts and connects the lead screw axle perpendicularly, is equipped with lifting unit and connecting plate on the lead screw axle, the connecting plate pass behind the lead screw axle with lead screw axle swing joint, the lower terminal surface of connecting plate passes through fixation nut and connects the apron, the up end fixed connection lifting unit of connecting plate, lifting unit is through rotatory at the epaxial vertical movement of lead screw, and lifting unit's lateral wall is connected rotating electrical machines, rotating electrical machines control lifting unit is rotatory.

In the preferred scheme, prevent contrary device including installing the shell, install the shell and be interior hollow structure, install the one end of shell and the inside intercommunication of exhaust chamber, install the other end and the exhaust tube intercommunication of shell, be equipped with the rubber buffer in the device shell, the center department of rubber buffer is equipped with the center post, the one end of center post run through the center part of rubber buffer and with the rubber buffer movable connection, the other end joint support board of center post, the backup pad plate body passes through the connecting rod to be fixed in the axle center department of installing the shell, coupling spring between backup pad and the rubber buffer.

In the preferred scheme, a pressure monitor is installed on the inner wall of the exhaust box, and a wireless connection device is arranged inside the pressure monitor and is in wireless connection with external monitoring equipment.

This patent can reach following beneficial effect:

1. according to the device, the plurality of lithium batteries are arranged in the air extraction box, and negative pressure air can be simultaneously fed and exhausted through the negative pressure vacuum pump, so that the efficiency is higher compared with that of the traditional single air extraction work, and the human resources are saved;

2. the device can realize the automatic opening and closing function of the air extraction box through the lifting device, can realize automatic control in the process of lithium electromagnetic air extraction, and further improves the safety;

3. the device is at the in-process of bleeding the lithium cell, can not the notes liquid mouth of direct contact lithium cell, can prevent that external steam from entering into inside the lithium cell, and the in-process of bleeding can not cause the damage to the notes liquid mouth of lithium cell yet, has effectively improved the life of lithium cell.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a battery fixing device according to the present invention;

FIG. 3 is a schematic view of the back of the overall structure of the present invention;

FIG. 4 is a schematic view of the overall structure of the present invention;

FIG. 5 is a schematic view of the anti-reverse device of the present invention.

In the figure: the device comprises an extraction box 1, a sealing groove opening 101, a cover plate 2, a sealing strip 201, a lifting device 3, a lifting base 301, a screw shaft 302, a connecting plate 303, a fixing nut 304, a lifting assembly 305, a rotating motor 306, an anti-reverse device 4, a device shell 401, a rubber plug 402, a central column 403, a spring 404, a supporting plate 405, a connecting rod 406, an extraction pipe 5, a vacuum pump 6, a battery fixing device 7, a push plate 701, a threaded rod 702, a rotating disk 703, a pressure monitor 8 and a lithium battery 9.

Detailed Description

As shown in fig. 1, a lithium battery vacuum exhaust apparatus, including exhaust box 1, elevating gear 3 and vacuum pump 6, lithium cell 9 installs in exhaust box 1, and the bottom both sides of exhaust box 1 are equipped with battery fixing device 7 and are used for fixing the inside lithium cell 9 of exhaust box 1, and the other elevating gear 3 that is equipped with of exhaust box 1, the top of exhaust box 1 is equipped with apron 2, opening and shutting of apron 2 and exhaust box 1 is controlled through elevating gear 3, and the lateral wall department of exhaust box 1 is equipped with anti-contrary device 4 and is used for preventing to bleed and finishes the back gaseous backward flow, the one end of anti-contrary device 4 is linked together with the inside of exhaust box 1, and the other end of anti-contrary device 4 communicates exhaust tube 5, and the other end of exhaust tube 5 communicates vacuum pump 6, and vacuum pump 6 inhales for the negative pressure and provides suction.

According to the preferable scheme, as shown in fig. 4, a sealing notch 101 is formed at the upper end of the extraction box 1, and a sealing strip 201 is arranged on the lower end surface of the cover plate 2; when the cover plate 2 is closed with the extraction box 1, the sealing strip 201 on the cover plate 2 will fill the sealing notch 101 at the port of the extraction box 1 and perform a further sealing function.

The preferable scheme is as shown in fig. 2, the battery fixing device 7 comprises a push plate 701, a threaded rod 702 and a rotating disk 703, holes are formed in two sides of the bottom of the extraction box 1, the threaded rod 702 is installed at the holes and is in threaded connection with the extraction box 1, the threaded rod 702 moves back and forth in the extraction box 1 through rotation, one end of the threaded rod 702 is connected with the push plate 701, the other end of the threaded rod 702 is connected with the rotating disk 703, when the lithium batteries 9 are placed in the extraction box 1 and stacked in order, the rotating disk 703 is rotated clockwise, the threaded rod 702 moves towards the inside of the extraction box 1, the push plate 701 presses the lithium batteries 9 mutually after the threaded rod 702 contacts the push plate 701, and the lithium batteries 9 are fixed.

As shown in fig. 1 and 3, the lifting device 3 preferably includes a lifting base 301, a screw shaft 302 is vertically connected to a center position of the lifting base 301, a lifting assembly 305 and a connecting plate 303 are disposed on the screw shaft 302, the connecting plate 303 passes through the screw shaft 302 and is movably connected to the screw shaft 302, a lower end surface of the connecting plate 303 is connected to the cover plate 2 through a fixing nut 304, an upper end surface of the connecting plate 303 is fixedly connected to the lifting assembly 305, the lifting assembly 305 vertically moves on the screw shaft 302 by rotating, and a side wall of the lifting assembly 305 is connected to a rotating motor 306;

when the rotating motor 306 rotates clockwise and drives the lifting assembly 305 to rotate synchronously, the lifting assembly 305 moves up and down along the screw shaft 302 through rotation, the lifting assembly 305 moves down to drive the connecting plate 303 to move, further drive the cover plate 2 to move down, and finally combine with the extraction box 1 to form a closed structure;

when the rotating motor 306 rotates reversely and drives the lifting assembly 305 to rotate synchronously, the lifting assembly 305 moves upward along the screw shaft 302 through rotation, the lifting assembly 305 moves upward to drive the connecting plate 303 to move, further drive the cover plate 2 to move upward, and finally separate from the suction box 1, thereby completing the opening and closing control between the two.

As shown in fig. 5, the anti-reverse device 4 includes a device housing 401, the device housing 401 is of an inner hollow structure, one end of the device housing 401 is communicated with the inside of the air exhaust box 1, the other end of the device housing 401 is communicated with the air exhaust pipe 5, a rubber plug 402 is arranged in the device housing 401, a central column 403 is arranged at the center of the rubber plug 402, one end of the central column 403 penetrates through the central portion of the rubber plug 402 and is movably connected with the rubber plug 402, the other end of the central column 403 is connected with a support plate 405, the support plate 405 is fixed at the axial center of the device housing 401 through a connecting rod 406, and a spring 404 is connected between the support plate 405 and the rubber plug 402;

when the air exhaust tube 5 exhausts, negative pressure is formed in the device shell 401, the rubber plug 402 moves upwards and compresses the spring 404, the air suction hole of the device shell 401 is opened when the rubber plug 402 moves upwards, and the gas in the air exhaust box 1 enters the air exhaust tube 5 through the device shell 401;

when the air exhaust tube 5 stops exhausting air, the spring 404 has downward tension and pushes the rubber plug 402 back into the air exhaust hole, at the moment, the air exhaust hole is closed, outside air cannot enter the air exhaust box 1 from the device shell 401, and vacuum negative pressure is formed in the air exhaust box 1.

The preferred scheme is as shown in fig. 2, pressure monitor 8 has been installed to the inner wall department of exhaust chamber 1, pressure monitor 8's inside is equipped with wireless connection device and with outside supervisory equipment wireless connection, the staff can observe the inside pressure condition of exhaust chamber 1 at any time to according to the timely inside atmospheric pressure of adjustment exhaust chamber 1 of the exhaust situation of lithium cell 9, prevent accidents such as lithium cell 9 inside liquid outflow that the exhaust is insufficient or leads to because suction pressure is too big of lithium cell 9.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. The utility model provides a lithium cell vacuum exhaust apparatus, includes exhaust chamber (1), elevating gear (3) and vacuum pump (6), its characterized in that: lithium cell (9) are installed in exhaust box (1), and the bottom both sides of exhaust box (1) are equipped with battery fixing device (7), and other elevating gear (3) that are equipped with of exhaust box (1), the top of exhaust box (1) are equipped with apron (2), opening and shutting of apron (2) and exhaust box (1) is controlled through elevating gear (3), and the lateral wall department of exhaust box (1) is equipped with prevents contrary device (4), the one end of preventing contrary device (4) is linked together with the inside of exhaust box (1), prevents the other end intercommunication exhaust tube (5) of contrary device (4), the other end intercommunication vacuum pump (6) of exhaust tube (5).

2. The vacuum degassing apparatus for a lithium battery according to claim 1, characterized in that: the upper end of the air extraction box (1) is provided with a sealing notch (101), and the lower end surface of the cover plate (2) is provided with a sealing strip (201); when the cover plate (2) is closed with the extraction box (1), the sealing strip (201) can be filled in the sealing groove opening (101) and plays a role in sealing.

3. The vacuum degassing apparatus for a lithium battery according to claim 1, characterized in that: the battery fixing device (7) comprises a push plate (701), a threaded rod (702) and a rotating disk (703), holes are formed in two sides of the bottom of the air extraction box (1), the threaded rod (702) is installed at the holes and is in threaded connection with the air extraction box (1), the threaded rod (702) moves back and forth in the air extraction box (1) through rotation, one end of the threaded rod (702) is connected with the push plate (701), and the other end of the threaded rod (702) is connected with the rotating disk (703).

4. The vacuum degassing apparatus for a lithium battery according to claim 1, characterized in that: lifting device (3) are including lifting base (301), and lifting unit (305) and connecting plate (303) are connected perpendicularly to the central point of lifting base (301), are equipped with lifting unit (305) and connecting plate (303) on screw shaft (302), connecting plate (303) pass behind screw shaft (302) and screw shaft (302) swing joint, and apron (2) are connected through fixation nut (304) to the lower terminal surface of connecting plate (303), up end fixed connection lifting unit (305) of connecting plate (303), and lifting unit (305) are through rotatory vertical movement on screw shaft (302), and rotating electrical machines (306) are connected to the lateral wall of lifting unit (305), rotating electrical machines (306) control lifting unit (305) are rotatory.

5. The vacuum degassing apparatus for a lithium battery according to claim 1, characterized in that: prevent contrary device (4) including device shell (401), device shell (401) are interior hollow structure, the one end of device shell (401) and the inside intercommunication of exhaust chamber (1), the other end and exhaust tube (5) intercommunication of device shell (401), be equipped with rubber buffer (402) in device shell (401), the center department of rubber buffer (402) is equipped with center post (403), the one end of center post (403) run through the center part of rubber buffer (402) and with rubber buffer (402) swing joint, backup pad (405) is connected to the other end of center post (403), backup pad (405) are fixed in the axle center department of device shell (401) through connecting rod (406), between backup pad (405) and the rubber buffer (402) connecting spring (404).

6. The vacuum degassing apparatus for a lithium battery according to claim 1, characterized in that: the inner wall department of exhaust box (1) has installed pressure monitor (8), the inside of pressure monitor (8) is equipped with wireless connection device and with outside supervisory equipment wireless connection.