CN210607529U - Evacuation exhaust apparatus after lithium ion battery formation - Google Patents
Evacuation exhaust apparatus after lithium ion battery formation Download PDFInfo
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- CN210607529U CN210607529U CN201921546517.5U CN201921546517U CN210607529U CN 210607529 U CN210607529 U CN 210607529U CN 201921546517 U CN201921546517 U CN 201921546517U CN 210607529 U CN210607529 U CN 210607529U
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- vacuum box
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- electromagnetic valve
- ion battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a vacuum-pumping exhaust apparatus after lithium ion battery ization becomes, including vacuum chamber, evacuation main line, heavy-calibre pipeline, small-calibre pipeline, first solenoid valve, second solenoid valve, intake pipe and third solenoid valve, wherein: the lithium ion battery is placed in a vacuum box, the large-caliber pipeline and the small-caliber pipeline are both communicated with the vacuum box, the first electromagnetic valve and the second electromagnetic valve are respectively arranged on the large-caliber pipeline and the small-caliber pipeline and are respectively used for controlling the opening and closing of the large-caliber pipeline and the small-caliber pipeline, and the vacuumizing main pipeline is communicated with the large-caliber pipeline and the small-caliber pipeline; the air inlet pipe is communicated with the vacuum box, the third electromagnetic valve is arranged between the air inlet pipe and the vacuum box, and the air inlet pipe is internally provided with gas for breaking vacuum. The utility model avoids the electrolyte being extracted out in the process of vacuumizing and exhausting after formation; the internal pressure of the battery can be kept highly uniform, and the holding capacity of electrolyte in the battery is improved, so that the capacity and the service life of the battery are ensured.
Description
Technical Field
The utility model relates to a lithium ion battery manufacture equipment technical field especially relates to a vacuum-pumping exhaust apparatus after lithium ion battery ization becomes.
Background
Lithium ion batteries have attracted attention and been widely used because of their advantages of high energy density, high voltage plateau, long cycle life, and the like. Formation is an important process in the lithium ion battery manufacturing process, during formation, a layer of Solid Electrolyte Interface (SEI) film is generated on the surface of a negative electrode during the first charging process of the lithium ion battery, and a good SEI film can prevent the further reaction of the electrolyte and graphite, but gas can be generated during the formation process of the SEI film. The existence of gas in the battery core can block the migration of lithium ions, black spots are generated on the interface of the battery, the performance of capacity is influenced, the cycle performance is reduced, the thickness of the battery core is increased, and the use of the battery is seriously influenced. At present, negative pressure formation is mostly used in the production process of lithium ion batteries to discharge gas generated in the SEI formation process, and the negative pressure causes the electrolyte to be pumped into a negative pressure pipeline, so that the holding capacity of the electrolyte is reduced, and a good device for vacuumizing after formation is needed.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides a vacuum-pumping exhaust apparatus after lithium ion battery ization becomes.
The utility model provides a pair of evacuation exhaust apparatus after lithium ion battery ization becomes, including vacuum chamber, evacuation main line, heavy-calibre pipeline, small-calibre pipeline, first solenoid valve, second solenoid valve, intake pipe and third solenoid valve, wherein:
the lithium ion battery is placed in a vacuum box, the large-caliber pipeline and the small-caliber pipeline are both communicated with the vacuum box, the first electromagnetic valve and the second electromagnetic valve are respectively arranged on the large-caliber pipeline and the small-caliber pipeline and are respectively used for controlling the opening and closing of the large-caliber pipeline and the small-caliber pipeline, and the vacuumizing main pipeline is communicated with the large-caliber pipeline and the small-caliber pipeline;
the air inlet pipe is communicated with the vacuum box, the third electromagnetic valve is arranged between the air inlet pipe and the vacuum box, and the air inlet pipe is internally provided with gas for breaking vacuum.
As the utility model discloses the scheme of further optimization, vacuum chamber is interior to be opened has a plurality of holding tanks, and the holding tank is used for fixed lithium ion battery.
As a further optimized scheme of the utility model, the gas in the intake pipe is nitrogen.
As a further optimized proposal of the utility model, the inner diameter of the large-caliber pipeline is 3 to 10 times of the inner diameter of the small-caliber pipeline.
As the utility model discloses the scheme of further optimizing still includes the controller, and the controller is connected with first solenoid valve, second solenoid valve and third solenoid valve, and the controller is used for controlling the switching of first solenoid valve, second solenoid valve and third solenoid valve.
As the utility model discloses the scheme of further optimization, when atmospheric pressure is greater than 30000Pa in the vacuum box, the first solenoid valve of controller control is opened and the second solenoid valve is closed, and when atmospheric pressure in the vacuum box is less than 30000Pa, the controller control second solenoid valve is opened and first solenoid valve is closed.
As the utility model discloses the scheme of further optimization still is equipped with pressure sensor in the vacuum chamber and is used for detecting atmospheric pressure size in the vacuum chamber, and pressure sensor is connected with the controller.
As the utility model discloses the scheme of further optimization still includes the display screen, and the display screen is established at the vacuum chamber outside, and the display screen is connected with the controller and is used for showing the atmospheric pressure value in the vacuum chamber.
The utility model discloses, the evacuation exhaust apparatus after the formation of the lithium ion battery, which avoids the electrolyte being drawn out in the evacuation exhaust process after the formation; and the gas generated in the battery formation process can be completely discharged, the thickness of the battery is reduced, the internal pressure of the battery can be kept highly uniform, and the retention of electrolyte in the battery is improved, so that the capacity and the service life of the battery are ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar designations denote like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, a vacuum-pumping exhaust device after formation of a lithium ion battery includes a vacuum box 1, a vacuum-pumping main pipe 2, a large-caliber pipe 3, a small-caliber pipe 4, a first electromagnetic valve 5, a second electromagnetic valve 6, an air inlet pipe 7 and a third electromagnetic valve 8, wherein:
a plurality of accommodating grooves 10 are formed in the vacuum box 1, the accommodating grooves 10 are used for fixing a lithium ion battery, and the lithium ion battery is placed in the accommodating grooves 10 of the vacuum box 1;
the inner diameter of the large-caliber pipeline 3 is 3-10 times, preferably 4 times, the inner diameter of the small-caliber pipeline 4, the large-caliber pipeline 3 and the small-caliber pipeline 4 are both communicated with the vacuum box 1, the first electromagnetic valve 5 and the second electromagnetic valve 6 are respectively installed on the large-caliber pipeline 3 and the small-caliber pipeline 4 and are respectively used for controlling the opening and closing of the large-caliber pipeline 3 and the small-caliber pipeline 4, the vacuumizing main pipeline 2 is communicated with the large-caliber pipeline 3 and the small-caliber pipeline 4 through a tee joint, the vacuumizing main pipeline 2 is connected with a vacuum pump, and the vacuum pump is used for vacuumizing the vacuum box 1;
the air inlet pipe 7 is communicated with the vacuum box 1, the third electromagnetic valve 8 is arranged between the air inlet pipe 7 and the vacuum box 1, nitrogen for breaking vacuum is arranged in the air inlet pipe 7, and the air inlet pipe 7 is communicated with a container filled with nitrogen;
the electromagnetic valve is characterized by further comprising a controller 9, wherein the controller 9 is connected with the first electromagnetic valve 5, the second electromagnetic valve 6 and the third electromagnetic valve 8, the controller 9 is used for controlling the first electromagnetic valve 5, the second electromagnetic valve 6 and the third electromagnetic valve 8 to be opened and closed, and the controller 9 is a PLC (programmable logic controller); when the air pressure in the vacuum box 1 is higher than 30000Pa, the controller 9 controls the first electromagnetic valve 5 to be opened and the second electromagnetic valve 6 to be closed, and when the air pressure in the vacuum box 1 is lower than 30000Pa, the controller 9 controls the second electromagnetic valve 6 to be opened and the first electromagnetic valve 5 to be closed;
the vacuum box 1 is also provided with a pressure sensor 11 for detecting the air pressure in the vacuum box 1, and the pressure sensor 11 is connected with the controller 9;
the vacuum box further comprises a display screen 12, the display screen 12 is arranged outside the vacuum box 1, and the display screen 12 is connected with the controller 9 and used for displaying the air pressure value in the vacuum box 1.
In the working process of the embodiment, after the lithium ion battery is subjected to liquid injection, infiltration, formation and aging, the lithium ion battery is vacuumized and exhausted, the lithium ion battery is placed in the accommodating groove 10 in the vacuum box 1 and sealed, the pressure sensor 11 detects the air pressure value in the vacuum box 1 under the normal pressure state, when the air pressure value in the vacuum box 1 is greater than 30000Pa, the PLC controller controls the first electromagnetic valve 5 to be opened and the second electromagnetic valve 6 to be closed, the vacuumizing speed is high, when the air pressure in the vacuum box 1 is less than 30000Pa, the controller 9 controls the second electromagnetic valve 6 to be opened and the first electromagnetic valve 5 to be closed, the vacuumizing speed is reduced, when the air pressure in the vacuum box 1 reaches the value required by the process, the PLC controller 9 controls the first electromagnetic valve 5 and the second electromagnetic valve 6 to be closed and controls the third electromagnetic valve to be opened, so that nitrogen enters the vacuum box 1 to destroy the vacuum, the vacuum pumping speed is reduced from high to low in the vacuum pumping process, and the electrolyte of the lithium ion battery is prevented from being pumped out while the vacuum pumping efficiency is ensured.
Preferably in this embodiment, vacuum chamber 1 is provided with a plurality of holding tanks 10 therein, and holding tank 10 is used for fixing lithium ion battery, exhausts a plurality of lithium ion battery simultaneously, increases work efficiency.
In this embodiment, it is preferable that the gas in the gas inlet pipe 7 is nitrogen, and the humidity of the nitrogen can be controlled, so as to meet the requirement of strictly controlling the moisture in the production process of the lithium battery.
In the present embodiment, the inner diameter of the large-diameter pipe 3 is preferably 3 to 10 times the inner diameter of the small-diameter pipe 4.
In the embodiment, the exhaust gas purification device further comprises a controller 9, the controller 9 is connected with the first electromagnetic valve 5, the second electromagnetic valve 6 and the third electromagnetic valve 8, and the controller 9 is used for controlling the opening and closing of the first electromagnetic valve 5, the second electromagnetic valve 6 and the third electromagnetic valve 8, so that the labor of related workers is reduced, and the exhaust efficiency is increased.
In the embodiment, preferably, when the air pressure in the vacuum box 1 is greater than 30000Pa, the controller 9 controls the first electromagnetic valve 5 to be opened and the second electromagnetic valve 6 to be closed, so that the vacuumizing speed is high, and the exhaust efficiency is increased; when the air pressure in the vacuum box 1 is less than 30000Pa, the controller 9 controls the second electromagnetic valve 6 to be opened and the first electromagnetic valve 5 to be closed, the vacuumizing speed is low, and the electrolyte in the lithium ion battery is prevented from being pumped out.
In the present embodiment, it is preferable that a pressure sensor 11 is further disposed in the vacuum box 1, the pressure sensor 11 is connected to the controller 9, and the pressure sensor 11 is used for detecting the pressure of the air in the vacuum box 1.
In this embodiment, it is preferable that the vacuum box further includes a display 12, the display 12 is disposed outside the vacuum box 1, and the display 12 is connected to the controller 9 for displaying the air pressure value in the vacuum box 1, so that the operator can observe the air pressure value in the vacuum box 1 conveniently.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a vacuum pumping exhaust apparatus after lithium ion battery ization, its characterized in that, includes vacuum box (1), evacuation main pipe (2), heavy-calibre pipeline (3), small-calibre pipeline (4), first solenoid valve (5), second solenoid valve (6), intake pipe (7) and third solenoid valve (8), wherein:
the lithium ion battery is placed in the vacuum box (1), the large-caliber pipeline (3) and the small-caliber pipeline (4) are communicated with the vacuum box (1), the first electromagnetic valve (5) and the second electromagnetic valve (6) are respectively installed on the large-caliber pipeline (3) and the small-caliber pipeline (4) and are respectively used for controlling the opening and closing of the large-caliber pipeline (3) and the small-caliber pipeline (4), and the vacuumizing main pipeline (2) is communicated with the large-caliber pipeline (3) and the small-caliber pipeline (4);
the air inlet pipe (7) is communicated with the vacuum box (1), the third electromagnetic valve (8) is arranged between the air inlet pipe (7) and the vacuum box (1), and gas for breaking vacuum is arranged in the air inlet pipe (7).
2. The evacuation exhaust apparatus after lithium ion battery formation of claim 1, characterized in that, a plurality of holding grooves (10) are opened in the vacuum box (1), the holding grooves (10) are used for fixing the lithium ion battery.
3. The evacuation device after formation of lithium ion battery according to claim 1, wherein the gas in the inlet pipe (7) is nitrogen.
4. The evacuation device after formation of lithium ion battery according to claim 1, wherein the inner diameter of the large-diameter pipe (3) is 3-10 times of the inner diameter of the small-diameter pipe (4).
5. The vacuum exhaust device after lithium ion battery formation according to claim 1, further comprising a controller (9), wherein the controller (9) is connected with the first electromagnetic valve (5), the second electromagnetic valve (6) and the third electromagnetic valve (8), and the controller (9) is used for controlling the opening and closing of the first electromagnetic valve (5), the second electromagnetic valve (6) and the third electromagnetic valve (8).
6. The evacuation device after formation of lithium ion battery according to claim 5, wherein the controller (9) controls the first solenoid valve (5) to open and the second solenoid valve (6) to close when the air pressure in the vacuum box (1) is greater than 30000Pa, and the controller (9) controls the second solenoid valve (6) to open and the first solenoid valve (5) to close when the air pressure in the vacuum box (1) is less than 30000 Pa.
7. The evacuation device after formation of lithium ion battery according to claim 5, wherein the vacuum box (1) is further provided with a pressure sensor (11) for detecting the air pressure in the vacuum box (1), and the pressure sensor (11) is connected with the controller (9).
8. The vacuumizing device after the formation of the lithium ion battery according to claim 7, further comprising a display screen (12), wherein the display screen (12) is arranged outside the vacuum box (1), and the display screen (12) is connected with the controller (9) and used for displaying the air pressure value in the vacuum box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921546517.5U CN210607529U (en) | 2019-09-17 | 2019-09-17 | Evacuation exhaust apparatus after lithium ion battery formation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921546517.5U CN210607529U (en) | 2019-09-17 | 2019-09-17 | Evacuation exhaust apparatus after lithium ion battery formation |
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| Publication Number | Publication Date |
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| CN210607529U true CN210607529U (en) | 2020-05-22 |
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| CN201921546517.5U Active CN210607529U (en) | 2019-09-17 | 2019-09-17 | Evacuation exhaust apparatus after lithium ion battery formation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628791A (en) * | 2022-01-29 | 2022-06-14 | 北京新能源汽车股份有限公司 | Battery cell, method for improving high-temperature performance of battery cell, battery and new energy vehicle |
| CN115663319A (en) * | 2022-11-09 | 2023-01-31 | 厦门海辰储能科技股份有限公司 | Battery formation method and battery formation equipment |
-
2019
- 2019-09-17 CN CN201921546517.5U patent/CN210607529U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628791A (en) * | 2022-01-29 | 2022-06-14 | 北京新能源汽车股份有限公司 | Battery cell, method for improving high-temperature performance of battery cell, battery and new energy vehicle |
| CN115663319A (en) * | 2022-11-09 | 2023-01-31 | 厦门海辰储能科技股份有限公司 | Battery formation method and battery formation equipment |
| CN115663319B (en) * | 2022-11-09 | 2024-01-26 | 厦门海辰储能科技股份有限公司 | Battery formation method and battery formation equipment |
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