Negative pressure cup assembly

Abstract

The utility model belongs to the technical field of battery production, and discloses a negative pressure cup assembly. The negative pressure cup assembly includes a cup body and a cooling element. The cup body is provided with a storage cavity, a first inlet and a second inlet, the battery is communicated with the storage cavity through the first inlet, and the negative pressure generator is communicated with the storage cavity through the second inlet. The cooling element is connected with the cup body to cool the cup body so as to cool the gaseous electrolyte entering the storage cavity, so that the gaseous electrolyte is condensed into liquid, the liquid electrolyte flows back to the battery, the gaseous electrolyte is prevented from running out of the second inlet or staying in the cup body, the loss of the electrolyte of the battery is avoided, and the capacity of the battery is improved; and meanwhile, the cleaning frequency of the negative pressure pipeline can be reduced, so that the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field especially relates to a negative pressure cup subassembly. BACKGROUND

[0002] Secondary battery, because its energy density is high, electric performance and safety performance are superior, has been as new generation energy storage battery selection. Secondary battery manufacturing process needs negative pressure formation, when negative pressure reaches preset value, will produce greater pressure drop makes electrolyte sudden rise, and then rush into negative pressure pipeline. Therefore, usually need to set up negative pressure cup between battery and negative pressure pipeline to store the electrolyte that suddenly rises, waits for process end, electrolyte backflow to battery.

[0003] Specifically as Figure 1 The bottom end of the negative pressure cup 10 is provided with a liquid inlet 20, and the top end is provided with a pressure inlet 30. The inside of the negative pressure cup 10 is provided with a blocking piece 40, which blocks and buffers the electrolyte, reducing the probability of the electrolyte rushing out of the negative pressure cup 10.

[0004] However, although the negative pressure cup 10 is provided with the blocking piece 40 in the cup, the blocking piece 40 can only block the liquid electrolyte. During the actual negative pressure extraction process, due to the high temperature of the battery, and for the electrolyte with high solvent volatility, part of the electrolyte will be gasified and enter the negative pressure cup 10, and the gaseous electrolyte will be further sucked into the negative pressure pipeline under the negative pressure suction force, causing electrolyte loss and thus leading to low capacity of the battery formation process. And because the electrolyte enters the negative pressure pipeline and accumulates in the negative pressure pipeline, the cleaning frequency of the negative pressure pipeline needs to be increased, thereby increasing the cost.

[0005] Therefore, it is urgent to provide a negative pressure cup assembly to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a negative pressure cup assembly, which can condense the gaseous electrolyte back to the cup body, reduce electrolyte loss, improve battery capacity and reduce cost.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A negative pressure cup assembly, comprising:

[0009] A cup body is provided with a storage cavity, a first inlet and a second inlet. The battery is communicated with the storage cavity through the first inlet, and the negative pressure generator is communicated with the storage cavity through the second inlet.

[0010] A cooling element is connected with the cup body to cool the cup body.

[0011] As an optional technical solution of the negative pressure cup assembly, the first inlet is located at the bottom end of the cup body.

[0012] As an optional technical solution of the negative pressure cup assembly, the second inlet is located at the top end of the cup body.

[0013] As an optional technical solution of the negative pressure cup assembly, the cooling element covers the side wall of the cup body.

[0014] As an optional technical solution of the negative pressure cup assembly, the cooling element covers the outer surface of the side wall of the cup body.

[0015] As an optional technical solution of the negative pressure cup assembly, the cooling element covers the inner surface of the side wall of the cup body.

[0016] As an optional technical solution of the negative pressure cup assembly, the cooling element is embedded in the side wall of the cup body.

[0017] As an optional technical solution of the negative pressure cup assembly, the cooling element includes a cooling pipe, and the cooling pipe is wound and covers the side wall of the cup body.

[0018] As an optional technical solution of the negative pressure cup assembly, the cooling pipe is flat, and the cooling pipe is wound and attached to the side wall of the cup body.

[0019] As an optional technical solution of the negative pressure cup assembly, the cooling element includes a cooling cover, and the cooling cover is located at the side wall of the cup body.

[0020] The beneficial effects of the utility model are as follows:

[0021] The negative pressure cup assembly provided by the utility model comprises a cup body and a cooling element. The cup body is provided with a storage cavity, a first inlet and a second inlet. The battery is in communication with the storage cavity through the first inlet, and the negative pressure generator is in communication with the storage cavity through the second inlet. The negative pressure generator generates a negative pressure airflow, which flows into the cup body through the second inlet and then draws negative pressure on the battery through the first inlet. At the same time of drawing negative pressure, the electrolyte in the battery is suddenly raised, the electrolyte enters the cup body through the first inlet, and the liquid electrolyte then flows back to the battery. The cooling element is connected with the cup body to cool the cup body, so that the gaseous electrolyte entering the storage cavity is cooled to condense into liquid, the liquid electrolyte then flows back to the battery, the gaseous electrolyte is prevented from running out through the second inlet or being retained in the cup body, the loss of the electrolyte of the battery is avoided, the capacity of the battery is improved, the cleaning frequency of the negative pressure pipeline is reduced, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a negative pressure cup structure schematic diagram in the background art.

[0023] Figure 2 is a structure diagram of the negative pressure cup assembly provided by the embodiment one of the present application Figure 1 ;

[0024] Figure 3 is a structure diagram of the negative pressure cup assembly provided by the embodiment one of the present application Figure 2 ;

[0025] Figure 4 is a structure diagram of the negative pressure cup assembly provided by the embodiment two of the present application

[0026] Figure 5 is a structure diagram of the negative pressure cup assembly provided by the embodiment three of the present application

[0027] Figure 6 is a structure diagram of the negative pressure cup assembly provided by the embodiment four of the present application

[0028] In the drawings:

[0029] 10, negative pressure cup; 20, liquid inlet; 30, pressure inlet; 40, blocking piece.

[0030] 100, cup body; 110, first inlet; 120, second inlet; 130, cooling element. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0032] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the utility model, unless another definite provision and limitation, first feature is in second feature "on" or "under" can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them.Moreover, first feature is in second feature "on", "above" and "upper surface" include that first feature is in second feature directly above and obliquely above, or only indicate that first feature horizontal height is higher than second feature.First feature is in second feature "under", "below" and "under surface" include that first feature is in second feature directly below and obliquely below, or only indicate that first feature horizontal height is less than second feature.

[0034] In the description of the embodiment, the terms "upper", "lower", "right", "left", "horizontal", "vertical", and "radial" are terms that refer to the orientation and / or position of the device or element shown in the drawings, and are used only to facilitate the description and simplify the operation, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.

[0035] Embodiment one

[0036] The negative pressure cup assembly provided by the embodiment can make gaseous electrolyte condense and flow back to the cup body, reduce electrolyte loss, improve battery capacity and reduce cost.

[0037] Specifically as shown in Figure 2 and Figure 3 The negative pressure cup assembly includes a cup body 100 and a cooling element 130. The cup body 100 is provided with a storage cavity, a first inlet 110 and a second inlet 120. The battery communicates with the storage cavity through the first inlet 110, and the negative pressure generator communicates with the storage cavity through the second inlet 120. The cooling element 130 is connected with the cup body 100 to cool the cup body 100.

[0038] Based on the above design, the cup body 100 is provided with a storage cavity, a first inlet 110 and a second inlet 120. The battery communicates with the storage cavity through the first inlet 110, and the negative pressure generator communicates with the storage cavity through the second inlet 120. The negative pressure generator generates a negative pressure airflow, which flows into the cup body 100 through the second inlet 120 and then draws negative pressure on the battery through the first inlet 110. At the same time of drawing negative pressure, the electrolyte in the battery rises suddenly, and the electrolyte enters the cup body 100 through the first inlet 110. The liquid electrolyte then flows back to the battery. The cooling element 130 is connected to the cup body 100 to cool the cup body 100, thereby cooling the gaseous electrolyte entering the storage cavity, causing the gaseous electrolyte to condense into liquid, and the liquid electrolyte then flows back to the battery, avoiding the gaseous electrolyte from running out through the second inlet 120 or staying in the cup body 100, thereby avoiding the loss of battery electrolyte and improving the battery capacity. At the same time, it can also reduce the cleaning frequency of the negative pressure pipeline to reduce the cost.

[0039] In order to facilitate the return of the liquid electrolyte in the cup body 100 to the battery, the first inlet 110 is located at the bottom end of the cup body 100, so that the liquid electrolyte flows back to the battery more smoothly through the first inlet 110.

[0040] In order to prevent the gaseous electrolyte from entering the second inlet 120 without being liquefied, the distance of the gaseous electrolyte reaching the second inlet 120 is increased, and the second inlet 120 is located at the top end of the cup body 100.

[0041] In this embodiment, the cup body 100 includes a cylindrical portion and a conical portion, the cylindrical portion and the conical portion are coaxial and have the same radius, the cylindrical portion is connected to the conical portion, and the conical portion has a downwardly pointing tip. The second inlet 120 is provided on the top surface of the cylindrical portion, and the radius of the second inlet 120 is smaller than the radius of the cylindrical portion. The first inlet 110 is provided at the tip of the conical portion. The structure of the cup body 100 facilitates the return of the liquid electrolyte, the second inlet 120 is small, reducing the probability of gaseous electrolyte entering the second inlet 120; the first inlet 110 is located at the tip of the conical portion, further facilitating the return of the liquid electrolyte, and increasing the difficulty of the electrolyte in the battery entering the cup body 100.

[0042] Further, in order to increase the cooling efficiency of the cup body 100, the cooling element 130 covers the side wall of the cup body 100, increasing the contact area between the cup body 100 and the cooling element 130, so that the cooling element 130 and the cup body 100 quickly exchange heat, thereby quickly condensing the gaseous electrolyte.

[0043] In this embodiment, the cooling element 130 covers the cylindrical portion of the cup body 100.

[0044] Further, the cooling element 130 covers the outer surface of the side wall of the cup body 100. The cooling element 130 is arranged on the outer surface of the side wall of the cup body 100, which is simple and convenient to operate.

[0045] Optionally, the cooling element 130 comprises a cooling pipe, and the cooling pipe is wound and covers the outer surface of the side wall of the cup body 100. The cooling pipe is used as a condensing device, which is low in cost, high in efficiency, and convenient to assemble.

[0046] It should be noted that the cooling pipe can be an empty pipe, and the gas, liquid or other cooling substances are introduced into the empty pipe. For example, the compressed air, water, alkane, olefin, alcohol or ammonia can be introduced.

[0047] The cooling pipe can also be a solid pipe, which is a cooling body itself, for example, the cooling body is a semiconductor cooling sheet.

[0048] Further, as shown in Figure 2 , the cooling pipe has a cylindrical shape.

[0049] As shown in Figure 3 , the cooling pipe can also have a flat shape, so that the cooling pipe is attached and wound on the side wall of the cup body 100. The flat cooling pipe can increase the contact area between the cooling pipe and the cup body 100, and improve the heat exchange efficiency.

[0050] Of course, the cooling pipe can also have other shapes such as a square column, and the present application does not make specific limitations on this.

[0051] The negative pressure cup assembly further comprises a buffer, which is arranged in the cup body 100 and buffers the liquid electrolyte, so as to reduce the electrolyte from being discharged from the cup body 100 through the second inlet 120.

[0052] In the embodiment, the buffer is fixed to the inner wall of the cup body 100.

[0053] Embodiment two

[0054] The same parts of the present embodiment and embodiment one will not be described again, and only the different parts of the present embodiment and embodiment one will be described below.

[0055] As shown in Figure 4 , the cooling element 130 covers the inner surface of the side wall of the cup body 100, so that the cooling element 130 directly contacts the gaseous electrolyte in the storage cavity, thereby increasing the heat exchange efficiency of the gaseous electrolyte; and since the cup body 100 is sealed, the cooling element 130 is prevented from contacting and exchanging heat with the outside, thereby further increasing the heat exchange efficiency of the gaseous electrolyte.

[0056] Optionally, the cooling element 130 comprises a cooling pipe, which is wound and covered on the inner surface of the side wall of the cup body 100. The cooling pipe is used as a condensing device, which is low in cost, high in efficiency and convenient to assemble.

[0057] It should be noted that the cooling pipe can be an empty pipe, in which cooling substances such as gas and liquid are filled. For example, compressed air, water, alkane, olefin, alcohol or ammonia can be filled.

[0058] The cooling pipe can also be a solid pipe, which is a cooling body itself, for example, a semiconductor cooling sheet.

[0059] Further, the cooling pipe has a flat shape, so that the cooling pipe is wound and attached to the side wall of the cup body 100. The flat cooling pipe can increase the contact area between the cooling pipe and the cup body 100, thereby improving the heat exchange efficiency.

[0060] Of course, the cooling pipe can also have other shapes such as a cylindrical shape, which is not limited in the utility model.

[0061] It should be noted that in the embodiment, the buffer and the cooling element 130 are arranged to avoid each other according to actual needs.

[0062] Embodiment Three

[0063] The same as the embodiment one will not be described here, and only the differences between the embodiment one and the embodiment three will be described as follows.

[0064] As shown in FIG. 3, the cooling element 130 is embedded in the inner surface of the side wall of the cup body 100, which can increase the heat exchange efficiency and avoid affecting the structure in the cup body 100. Figure 5

[0065] Optionally, the cooling element 130 comprises a cooling pipe, which is wound and covered on the inner surface of the side wall of the cup body 100. The cooling pipe is used as a condensing device, which is low in cost, high in efficiency and convenient to assemble.

[0066] It should be noted that the cooling pipe can be an empty pipe, in which cooling substances such as gas and liquid are filled. For example, compressed air, water, alkane, olefin, alcohol or ammonia can be filled.

[0067] The cooling pipe can also be a solid pipe, which is a cooling body itself, for example, a semiconductor cooling sheet.

[0068] Further, the cooling pipe has a flat shape, so that the cooling pipe is wound and attached to the side wall of the cup body 100. The flat cooling pipe can increase the contact area between the cooling pipe and the cup body 100, thereby improving the heat exchange efficiency.

[0069] ​Of course, the cooling pipe can also be in other shapes such as a cylindrical shape, and the present application does not limit the shape of the cooling pipe.

[0070] Embodiment Four

[0071] The same as Embodiment One will not be repeated, and only the differences between the two embodiments will be described as follows.

[0072] As shown in Figure 6 The cooling element 130 comprises a cooling cover, which is arranged on the outer surface of the side wall of the cup body 100. Compared with the structure of the cooling pipe in Embodiment One, the cooling cover can increase the contact area between the cooling element 130 and the side wall of the cup body 100, and increase the heat exchange efficiency; and the installation is simple.

[0073] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A negative pressure cup assembly, characterized by, Comprise: a cup body (100) provided with a storage cavity, a first inlet (110) and a second inlet (120), a battery communicating with the storage cavity through the first inlet (110), and a negative pressure generator communicating with the storage cavity through the second inlet (120); a cooling element (130) connected with the cup body (100) to cool the cup body (100).

2. The negative pressure cup assembly of claim 1, wherein, The first inlet (110) is located at the bottom end of the cup body (100).

3. The negative pressure cup assembly of claim 2, wherein, The second inlet (120) is located at the top end of the cup body (100).

4. The negative pressure cup assembly of claim 1, wherein, The cooling element (130) covers the side wall of the cup body (100).

5. The negative pressure cup assembly of claim 4, wherein, The cooling element (130) covers the outer surface of the side wall of the cup body (100).

6. The negative pressure cup assembly of claim 4, wherein, The cooling element (130) covers the inner surface of the side wall of the cup body (100).

7. The negative pressure cup assembly of claim 4, wherein, The cooling element (130) is embedded in the side wall of the cup body (100).

8. The negative pressure cup assembly of any of claims 4-7, wherein, The cooling element (130) comprises a cooling pipe which is wound around the side wall of the cup body (100).

9. The negative pressure cup assembly of claim 8, wherein, The cooling pipe has a flat shape, so that the cooling pipe is attached and wound around the side wall of the cup body (100).

10. The negative pressure cup assembly of claim 5, wherein, The cooling element (130) comprises a cooling cover located on the side wall of the cup body (100).

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