Battery infiltration device and battery production equipment

Abstract

The utility model discloses a battery infiltration device and battery production equipment. The battery infiltration device comprises a pressure chamber, a gas caching assembly, a gas supplementing assembly and a vacuumizing assembly. The pressure chamber is provided with a pressure cavity which is used for placing a battery; the gas temporary storage assembly comprises a gas temporary storage piece, a first valve and a second valve, the first valve is arranged between an inlet of the gas temporary storage piece and the pressure cabin, and the second valve is arranged between an outlet of the gas temporary storage piece and the pressure cabin; the gas supplementing assembly comprises a gas supplementing piece and a third valve, the gas supplementing piece is arranged on the side, close to an outlet of the gas temporary storage piece, of the gas temporary storage piece, and the third valve is arranged between the outlet of the gas supplementing piece and the pressure cabin; the vacuumizing assembly comprises a vacuumizing piece and a fourth valve, the vacuumizing piece is arranged on the side, close to the inlet of the gas temporary storage piece, of the gas temporary storage piece, and the fourth valve is arranged between the inlet of the vacuumizing piece and the pressure cabin. The battery infiltration device can improve the infiltration efficiency of the battery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production, in particular to a battery infiltration device and a battery production equipment. BACKGROUND

[0002] Lithium battery is one of the most commonly used battery types on electric vehicles at present, and infiltration is an important link in the production of lithium ion batteries. In the infiltration process, the electrolyte injected into the battery needs to fully penetrate the battery pole piece and the diaphragm everywhere, so that the battery is fully wetted. The traditional infiltration device makes the electrolyte uniformly infiltrate through the capillary effect in the battery. This method has long infiltration time and low infiltration efficiency. CONTENT OF THE INVENTION

[0003] Therefore, the purpose of the present application is to overcome the deficiencies in the prior art and provide a battery infiltration device that can improve the infiltration efficiency of the battery.

[0004] The present application also provides a battery production equipment.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] According to the battery infiltration device of the first aspect of the present application, the battery infiltration device comprises a pressure tank provided with a pressure chamber for placing a battery; a gas buffer assembly comprising a gas buffer, a first valve and a second valve, the inlet of the gas buffer and the outlet of the gas buffer are in communication with the pressure chamber, the first valve is arranged between the inlet of the gas buffer and the pressure tank, and the second valve is arranged between the outlet of the gas buffer and the pressure tank; a gas supplementing assembly comprising a gas supplementing member and a third valve, the gas supplementing member is arranged on the side of the gas buffer close to the outlet of the gas buffer, the outlet of the gas supplementing member is in communication with the pressure chamber, and the third valve is arranged between the outlet of the gas supplementing member and the pressure tank; a vacuum pumping assembly comprising a vacuum pumping member and a fourth valve, the vacuum pumping member is arranged on the side of the gas buffer close to the inlet of the gas buffer, the inlet of the vacuum pumping member is in communication with the pressure chamber, and the fourth valve is arranged between the inlet of the vacuum pumping member and the pressure tank.

[0007] The battery infiltration device of the present application has the following advantages:

[0008] In the soaking device of the application, the battery can be placed in the pressure cavity of the pressure chamber, the third valve is opened, and the first valve, the second valve and the fourth valve are closed to fill the pressure cavity with air through the air supplementing member, so that the battery shell is deformed by the pressure in the pressure cavity, and the electrolyte level in the battery is further raised, thereby accelerating the speed of the electrolyte completely liquid sealing the roll core. When the roll core is completely soaked in the electrolyte, the third valve is closed, and the first valve is opened to enable the gas in the pressure cavity to enter the gas buffer member, thereby depressurizing the pressure cavity, and the gas in the pressure cavity is buffered by the gas buffer member, so that the gas in the pressure cavity can be recycled to reduce energy consumption. When the pressure in the pressure cavity and the gas buffer member is equal, the first valve is closed, and the fourth valve is opened to vacuumize the pressure cavity through the vacuumizing member, so that the excess gas in the roll core can be discharged. When the vacuum degree in the pressure cavity reaches the preset vacuum degree, the fourth valve is closed, and the second valve is opened to enable the gas in the gas buffer member to enter the pressure cavity, thereby pressurizing the pressure cavity with the gas in the gas buffer member. When the pressure in the pressure cavity and the gas buffer member is equal and the pressure in the pressure cavity does not reach the preset pressure value, the third valve is opened to fill the pressure cavity with air through the air supplementing member, so that the pressure in the pressure cavity reaches the preset pressure value, thereby enabling the pole pieces in the roll core to move relative to each other through the vacuumizing and pressurizing action of the pressure cavity, thereby accelerating the discharge speed of the gas in the roll core, and the excess gas in the roll core is completely discharged through the vacuumizing and pressurizing action of multiple cycles. When the excess gas in the roll core is completely discharged, the third valve is opened again, the first valve, the second valve and the fourth valve are closed, and the pressure cavity is filled with air through the air supplementing member, so that the roll core can be soaked in the electrolyte. Therefore, the battery soaking device of the application can improve the soaking efficiency of the battery through the cooperation of the air supplementing assembly and the vacuumizing assembly.

[0009] The battery soaking device according to the first aspect of the application further comprises a first pipeline and a second pipeline. The two ends of the first pipeline are respectively connected with the inlet of the gas buffer member and the pressure cavity. The two ends of the second pipeline are respectively connected with the outlet of the gas buffer member and the pressure cavity. The first valve is arranged on the first pipeline, and the second valve is arranged on the second pipeline.

[0010] The battery infiltrating device according to the first aspect of the present application further comprises a third pipeline and a fifth valve, the fifth valve is arranged between the second valve and the pressure cavity, the second valve is arranged on one end of the second pipeline close to the gas buffer, two ends of the third pipeline are communicated with the air supplementing element and the second pipeline respectively, and the connection position of the third pipeline and the second pipeline is arranged between the second valve and the fifth valve, and the third valve is arranged on the third pipeline.

[0011] The battery infiltrating device according to the first aspect of the present application, the first pipeline has a first branch and a second branch;

[0012] One end of the first branch and one end of the second branch are communicated with the inlet of the gas buffer, the other end of the first branch and the other end of the second branch are communicated with the pressure cavity, the vacuumizing element and the fourth valve are arranged on the second branch, and the first valve is arranged on the first branch;

[0013] The battery infiltrating device further comprises a sixth valve, the sixth valve is arranged on the first pipeline and arranged at any position between the intersection of the first branch and the second branch close to the pressure cavity and the pressure cavity.

[0014] The battery infiltrating device according to the first aspect of the present application further comprises a heating assembly, and the heating assembly is arranged in the pressure cavity.

[0015] The battery infiltrating device according to the first aspect of the present application, the heating assembly comprises a heating element and a temperature measuring element, and the heating element and the temperature measuring element are arranged in the pressure cavity.

[0016] The battery infiltrating device according to the first aspect of the present application, the heating assembly further comprises a heat insulation element, the heat insulation element is arranged in the pressure cavity, and the heat insulation element is arranged between the heating element and the cavity wall of the pressure cavity.

[0017] The battery infiltrating device according to the first aspect of the present application further comprises a guide rail and a plurality of bearing elements, the guide rail is arranged in the pressure cavity and extends from the inlet of the pressure cavity to the outlet of the pressure cavity, each bearing element is in sliding connection with the guide rail, each bearing element is provided with a plurality of bearing cavities, and each bearing cavity is used for placing a battery.

[0018] According to the battery infiltration device of the first aspect of the present application, the pressure cabin comprises a cabin body, a first cabin door and a second cabin door, the cabin body is provided with the pressure cavity, the first cabin door and the second cabin door are connected with two ends of the cabin body respectively, and the guide rail extends from the first cabin door to the second cabin door.

[0019] According to the battery production equipment of the second aspect of the present application, the battery infiltration device is used.

[0020] The battery production equipment of the present application has the following advantages:

[0021] In the battery production equipment of the present application, since the battery infiltration device can improve the infiltration efficiency of the battery, the battery production equipment of the present application can have high production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1 The structure of the battery infiltration device in the present application is shown;

[0024] Figure 2 The enlarged structure of A in Figure 1 the present application is shown;

[0025] Figure 3 The structure of the gas storage assembly, the air supplement assembly and the vacuum pumping assembly in the present application is shown;

[0026] Figure 4 The side view structure of the pressure cabin, the guide rail and the bearing in the present application is shown.

[0027] Explanation of main element symbols:

[0028] 100-pressure cabin; 110-pressure cavity; 120-cabin body; 130-first cabin door; 140-second cabin door;

[0029] 200-gas storage assembly; 210-gas storage; 220-first valve; 230-second valve;

[0030] 300-air supplement assembly; 310-air supplement; 320-third valve;

[0031] 400-vacuum pumping assembly; 410-vacuum pumping; 420-fourth valve;

[0032] 510 - First pipeline; 511 - First branch; 512 - Second branch; 520 - Second pipeline; 530 - Third pipeline;

[0033] 610 - Fifth valve; 620 - Sixth valve;

[0034] 700 - Heating assembly; 710 - Heating element; 720 - Temperature sensing element; 730 - Heat insulation element;

[0035] 800-guide rail;

[0036] 900 - Load-bearing component; 910 - Load-bearing cavity. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] Reference Figure 1 as well as Figure 3 As shown, the battery immersion device involved in the embodiments of this application includes: a pressure chamber 100, a gas buffer assembly 200, a gas replenishment assembly 300, and a vacuum assembly 400.

[0043] Specifically, the pressure chamber 100 is provided with a pressure cavity 110 for placing the battery; the gas buffer assembly 200 includes a gas buffer element 210, a first valve 220, and a second valve 230. The inlet and outlet of the gas buffer element 210 are both connected to the pressure cavity 110. The first valve 220 is located between the inlet of the gas buffer element 210 and the pressure chamber 100, and the second valve 230 is located between the outlet of the gas buffer element 210 and the pressure chamber 100; the gas replenishment assembly 300 includes a gas replenishment element 310 and a third valve 320, which replenishes... The gas component 310 is located on the side of the gas buffer component 210 near the outlet of the gas buffer component 210. The outlet of the gas replenishment component 310 is connected to the pressure chamber 110. The third valve 320 is located between the outlet of the gas replenishment component 310 and the pressure chamber 100. The vacuum assembly 400 includes a vacuum component 410 and a fourth valve 420. The vacuum component 410 is located on the side of the gas buffer component 210 near the inlet of the gas buffer component 210. The inlet of the vacuum component 410 is connected to the pressure chamber 110. The fourth valve 420 is located between the inlet of the vacuum component 410 and the pressure chamber 100.

[0044] In the immersion apparatus of this application, the battery can be placed in the pressure chamber 110 of the pressure chamber 100, and the third valve 320 can be opened while the first valve 220, the second valve 230, and the fourth valve 420 are closed. Air is then supplied to the pressure chamber 110 via the air supply component 310, causing the battery casing to be deformed by the pressure within the pressure chamber 110. This further causes the electrolyte level inside the battery to rise, thereby accelerating the rate at which the electrolyte completely liquid-seals the winding core. When the winding core is completely immersed in the electrolyte, the third valve 320 can be closed and the first valve 220 opened, allowing the pressure chamber 110 to... Gas can enter the gas buffer 210 to depressurize the pressure chamber 110. Simultaneously, the gas buffer 210 buffers the gas within the pressure chamber 110, allowing for gas recycling and reducing energy consumption. When the pressure in the pressure chamber 110 equals the pressure in the gas buffer 210, the first valve 220 is closed and the fourth valve 420 is opened. This allows the vacuum pump 410 to evacuate the pressure chamber 110, expelling excess gas from the winding core. When the vacuum level in the pressure chamber 110 reaches the preset vacuum level, it can... The fourth valve 420 is closed, and the second valve 230 is opened to allow gas in the gas buffer 210 to enter the pressure chamber 110, thereby pressurizing the pressure chamber 110. When the pressure in the pressure chamber 110 equals the pressure in the gas buffer and the pressure in the pressure chamber 110 has not reached the preset pressure value, the third valve 320 is opened to allow gas to be supplied to the pressure chamber 110 through the gas replenishment component 310, so that the pressure in the pressure chamber 110 reaches the preset pressure value. This allows the electrodes inside the winding core to be pressurized through the vacuum in the pressure chamber 110. The actions interact with each other, thereby accelerating the gas discharge speed inside the winding core. Through multiple cycles of vacuuming and pressurizing, all excess gas inside the winding core is discharged. Once all excess gas inside the winding core is discharged, the third valve 320 can be opened again, while the first valve 220, the second valve 230, and the fourth valve 420 are closed. Gas is then supplied to the pressure chamber 110 through the gas supply component 310, ensuring that all parts inside the winding core are wetted with electrolyte. Thus, the battery wetting device of this application can improve the battery wetting efficiency with the cooperation of the gas supply component 300 and the vacuuming component 400.

[0045] Specifically, in this embodiment, the gas supplied by the gas replenishment component 310 to the pressure chamber 110 can be any one of nitrogen, oxygen or hydrogen.

[0046] Reference Figure 3As shown, the battery immersion device also includes a first pipe 510 and a second pipe 520. The two ends of the first pipe 510 are connected to the inlet of the gas buffer 210 and the pressure chamber 110, respectively. The two ends of the second pipe 520 are connected to the outlet of the gas buffer 210 and the pressure chamber 110, respectively. A first valve 220 is installed on the first pipe 510 and a second valve 230 is installed on the second pipe 520.

[0047] In this embodiment, when the first valve 220 is opened, the gas in the pressure chamber 110 can enter the gas buffer 210 through the first pipe 510 to buffer the gas in the pressure chamber 110, thereby enabling the gas in the pressure chamber 110 to be recycled and reducing energy consumption. When the second valve 230 is opened, the gas in the gas buffer 210 can enter the pressure chamber 110 through the second pipe 520 to pressurize the pressure chamber 110.

[0048] Continue to refer to Figure 3 As shown, the battery immersion device also includes a third pipe 530 and a fifth valve 610. The fifth valve 610 is located between the second valve 230 and the pressure chamber 110. The second valve 230 is located at one end of the second pipe 520 near the gas buffer 210. The two ends of the third pipe 530 are respectively connected to the gas supply component 310 and the second pipe 520. The connection between the third pipe 530 and the second pipe 520 is located between the second valve 230 and the fifth valve 610. The third valve 320 is located on the third pipe 530.

[0049] In this embodiment, when the third valve 320 and the fifth valve 610 are opened, the gas in the gas supply component 310 can enter the pressure chamber 110 sequentially through the third pipe 530 and the second pipe 520 to pressurize the pressure chamber 110. At the same time, since the connection between the third pipe 530 and the second pipe 520 is located between the second valve 230 and the fifth valve 610, the opening and closing of the second valve 230 can avoid interfering with the gas flow in the gas supply component 310. Even if the second valve 230 is closed, the gas in the gas supply component 310 can still enter the pressure chamber 110 through the second pipe 520, so as to realize the independence of the gas buffer component 210 and the gas supply component 310. When it is necessary to depressurize the pressure chamber 110, the fifth valve 610 can be closed so that the gas in the pressure chamber 110 can enter the pressure buffer component or the vacuum component 410 through the first pipe 510.

[0050] Continue to refer to Figure 3 As shown, the first pipe 510 has a first branch 511 and a second branch 512;

[0051] One end of the first branch 511 and one end of the second branch 512 are connected to the inlet of the gas buffer 210. The other end of the first branch 511 and the other end of the second branch 512 are connected to the pressure chamber 110. The vacuum pump 410 and the fourth valve 420 are installed on the second branch 512, and the first valve 220 is installed on the first branch 511.

[0052] The battery immersion device also includes a sixth valve 620, which is disposed on the first pipe 510 and is located at any position between the junction of the first branch 511 and the second branch 512 near the pressure chamber 110 and the pressure chamber 110.

[0053] In this embodiment, when the core is completely immersed in the electrolyte, the third valve 320 is closed and the first valve 220 is opened, so that the gas in the pressure chamber 110 can enter the gas buffer 210 through the first branch 511 to depressurize the pressure chamber 110. When the pressure in the pressure chamber 110 is equal to the pressure in the gas buffer 210, the first valve 220 is closed and the fourth valve 420 is opened, so that the vacuum pump 410 can evacuate the pressure chamber 110 through the second branch 512, thereby allowing excess gas inside the core to be discharged. When it is necessary to pressurize the pressure chamber 110, the sixth valve 620 is closed and the fifth valve 610 is opened. At the same time, the second valve 230 or the third valve 320 is opened, so that the gas in the gas buffer 210 or the gas replenishment component 310 can enter the pressure chamber 110, thereby pressurizing the pressure chamber 110.

[0054] Reference Figure 1 As shown, the battery immersion device also includes a heating component 700, which is disposed within the pressure chamber 110.

[0055] In this embodiment, the heating component 700 can heat and keep the pressure chamber 110 warm, preventing the gas from condensing in the pressure chamber 110 and the electrolyte from solidifying, thereby improving the smoothness of electrolyte flow.

[0056] Reference Figure 2 as well as Figure 4 As shown, the heating assembly 700 includes a heating element 710 and a temperature measuring element 720, both of which are disposed within the pressure chamber 110.

[0057] In this embodiment, the heating element 710 can heat and keep the pressure chamber 110 warm, preventing the gas from condensing in the pressure chamber 110 and the electrolyte from solidifying. Furthermore, the temperature measuring element 720 can monitor the temperature in the pressure chamber 110 in real time to prevent the temperature in the pressure chamber 110 from becoming too high. When the temperature in the pressure chamber 110 is too high, the electrolyte may decompose.

[0058] Specifically, the heating element 710 and the temperature measuring element 720 are respectively disposed on opposite sides of the pressure chamber 110, that is, the heating element 710 is disposed at the bottom of the heating chamber and the temperature measuring element 720 is disposed at the top of the pressure chamber 110. In this way, the accuracy of the temperature measured by the temperature measuring element 720 can be improved. When the heating element 710 heats the pressure chamber 110, if the temperature at the location of the temperature measuring element 720 reaches a certain temperature value, it means that the temperature at all points in the pressure chamber 110 has reached that temperature value.

[0059] Reference Figure 2 As shown, the heating assembly 700 also includes a heat insulation element 730, which is disposed in the pressure chamber 110 and between the heating element 710 and the cavity wall of the pressure chamber 110.

[0060] In this embodiment, since the heat insulation component 730 is disposed inside the pressure chamber 110 and between the heating component 710 and the cavity wall of the pressure chamber 110, the heat insulation component 730 can thermally insulate the heating component 710 and the cavity wall of the pressure chamber 110, thereby reducing the heat absorbed by the chamber body 120 of the pressure chamber 100 and increasing the temperature rise rate inside the pressure chamber 110. At the same time, the heat insulation component 730 can keep the pressure chamber 110 warm and reduce the heat dissipation rate inside the pressure chamber 110.

[0061] Reference Figure 2 as well as Figure 4 As shown, the battery immersion device also includes a guide rail 800 and multiple carriers 900. The guide rail 800 is disposed in the pressure chamber 110 and extends from the inlet of the pressure chamber 110 to the outlet of the pressure chamber 110. Each carrier 900 is slidably connected to the guide rail 800. Each carrier 900 is provided with multiple carrier cavities 910, and each carrier cavity 910 is used for placing the battery.

[0062] In this embodiment, since the battery immersion device of this application includes multiple carriers 900, and each carrier 900 is provided with multiple carrier cavities 910, each carrier cavity 910 is used for placing batteries, the battery immersion device of this application can simultaneously immerse multiple batteries to improve battery production efficiency. Furthermore, since a guide rail 800 is provided in the pressure chamber 110, and the guide rail 800 extends from the inlet of the pressure chamber 110 to the outlet of the pressure chamber 110, each carrier 900 is slidably connected to the guide rail 800. Thus, when a battery is placed on a carrier 900, the carrier 900 can be pushed into the pressure chamber 110 through the slidable connection between the carrier 900 and the guide rail 800, thereby reducing the difficulty of battery handling and improving battery immersion efficiency.

[0063] Reference Figure 1 as well as Figure 4 As shown, the pressure chamber 100 includes a chamber body 120, a first door 130 and a second door 140. The chamber body 120 is provided with a pressure chamber 110. The first door 130 and the second door 140 are respectively connected to the two ends of the chamber body 120. The guide rail 800 extends from the inlet of the first door 130 to the second door 140.

[0064] In this embodiment, when the battery needs to be immersed, the first door 130 is opened, and the carrier 900 carrying the battery is pushed into the pressure chamber 110 of the chamber 120 through the first door 130 via the guide rail 800. Then, the first door 130 and the second door 140 are closed at the same time to ensure the airtightness of the pressure chamber 110, which facilitates the subsequent immersion of the battery. After the battery is immersed, the second door 140 is opened, and the battery carrying the immersed battery is pushed out of the chamber 120 through the second door 140 via the guide rail 800, so that the immersed battery can enter the subsequent process, and the next batch of batteries to be immersed can enter the pressure chamber 110.

[0065] The battery production equipment involved in the embodiments of this application includes: the battery immersion device described above.

[0066] In the battery production equipment of this application, since the aforementioned battery wetting device can improve the wetting efficiency of the battery, the battery production equipment of this application can have a high production efficiency.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery infiltration device, comprising: The battery soaking device comprises a pressure tank (100) provided with a pressure cavity (110) for placing a battery, a gas buffer assembly (200) comprising a gas buffer (210), a first valve (220) and a second valve (230), an inlet of the gas buffer (210) and an outlet of the gas buffer (210) being communicated with the pressure cavity (110), the first valve (220) being arranged between the inlet of the gas buffer (210) and the pressure tank (100), the second valve (230) being arranged between the outlet of the gas buffer (210) and the pressure tank (100), a gas supplement assembly (300) comprising a gas supplement (310) and a third valve (320), the gas supplement (310) being arranged on a side of the gas buffer (210) close to the outlet of the gas buffer (210), an outlet of the gas supplement (310) being communicated with the pressure cavity (110), the third valve (320) being arranged between the outlet of the gas supplement (310) and the pressure tank (100), a vacuumizing assembly (400) comprising a vacuumizing (410) and a fourth valve (420), the vacuumizing (410) being arranged on a side of the gas buffer (210) close to the inlet of the gas buffer (210), an inlet of the vacuumizing (410) being communicated with the pressure cavity (110), the fourth valve (420) being arranged between the inlet of the vacuumizing (410) and the pressure tank (100). The battery soaking device further comprises a first pipeline (510) and a second pipeline (520), two ends of the first pipeline (510) being communicated with the inlet of the gas buffer (210) and the pressure cavity (110) respectively, the second valve (230) being arranged on one end of the second pipeline (520) close to the gas buffer (210), the third pipeline (530) being communicated with the gas supplement (310) and the second pipeline (520) respectively, and the connection between the third pipeline (530) and the second pipeline (520) being arranged between the second valve (230) and the fifth valve (610), the third valve (320) being arranged on the third pipeline (530). The first pipeline (510) has a first branch (511) and a second branch (512). ​ ​ 2. The battery infiltration device of claim 1, wherein, ​ 3. The battery infiltration device of claim 2, wherein, ​ 4. The battery infiltration device of claim 2, wherein, ​ One end of the first branch (511) and one end of the second branch (512) are in communication with an inlet of the gas buffer (210), the other end of the first branch (511) and the other end of the second branch (512) are in communication with the pressure chamber (110), the vacuum device (410) and the fourth valve (420) are arranged on the second branch (512), and the first valve (220) is arranged on the first branch (511); The battery infiltration device further comprises a sixth valve (620), which is arranged on the first pipeline (510) and arranged at any position between the intersection of the first branch (511) and the second branch (512) near one end of the pressure chamber (110) and the pressure chamber (110).

5. The battery infiltration device of any one of claims 1-4, wherein, The battery infiltration device further comprises a heating assembly (700), which is arranged in the pressure chamber (110).

6. The battery infiltration device of claim 5, wherein, The heating assembly (700) comprises a heating device (710) and a temperature measuring device (720), both of which are arranged in the pressure chamber (110).

7. The battery infiltration device of claim 6, wherein, The heating assembly (700) further comprises a heat insulation device (730), which is arranged in the pressure chamber (110) and arranged between the heating device (710) and the cavity wall of the pressure chamber (110).

8. The battery infiltration device of any one of claims 1-4, wherein, The battery infiltration device further comprises a guide rail (800) and a plurality of bearing devices (900), the guide rail (800) is arranged in the pressure chamber (110) and extends from the inlet of the pressure chamber (110) to the outlet of the pressure chamber (110), each bearing device (900) is in sliding connection with the guide rail (800), each bearing device (900) is provided with a plurality of bearing cavities (910), and each bearing cavity (910) is used for placing a battery.

9. The battery infiltration device of claim 8, wherein, The pressure chamber (100) comprises a chamber body (120), a first chamber door (130) and a second chamber door (140), the chamber body (120) is provided with the pressure chamber (110), the first chamber door (130) and the second chamber door (140) are respectively connected with two ends of the chamber body (120), and the guide rail (800) extends from the first chamber door (130) to the second chamber door (140).

10. A battery production apparatus characterized by comprising: Comprise: The battery infiltration device according to any one of claims 1-9.

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