Liquid injection cup and liquid injection device

Abstract

This invention discloses a liquid injection cup and a liquid injection device. The liquid injection cup includes a first plate and a second plate arranged at relative intervals, and a side plate. The first plate, the second plate, and the side plate are configured to enclose a liquid-containing cavity. The first plate or the side plate has an inlet hole communicating with the liquid-containing cavity, and the second plate or the side plate has an outlet hole communicating with the liquid-containing cavity. The inner side of the side plate also has multiple hanging holes communicating with the liquid-containing cavity, and in the arrangement direction of the first and second plates, the multiple hanging holes are all located between the inlet hole and the outlet hole. The technical solution of this invention prevents the liquid injection cup from generating additional residual liquid adhering to the wall during liquid injection, thus improving the accuracy of liquid injection by the liquid injection device.

Description

Technical Field

[0001] This application relates to the field of liquid injection device technology, and in particular to a liquid injection cup and a liquid injection device. Background Technology

[0002] In the related technology, during the electrolyte filling process of the battery device, the van der Waals forces between the electrolyte and the filling cup cause liquid to adhere to the walls of the filling cup. Therefore, after the filling process is completed, residual liquid usually remains in the filling cup, affecting the accuracy of the filling process. Summary of the Invention

[0003] The main objective of this application is to provide a liquid injection cup that prevents additional residual liquid from adhering to the walls during liquid injection, thereby improving the accuracy of liquid injection by the liquid injection device.

[0004] To achieve the above objectives, the liquid injection cup proposed in this application includes a first plate and a second plate arranged at relative intervals, and a side plate, wherein the first plate, the second plate, and the side plate are configured to enclose a liquid-containing cavity.

[0005] The first plate or side panel is provided with an inlet hole that communicates with the liquid-containing cavity, and the second plate or side panel is provided with an outlet hole that communicates with the liquid-containing cavity.

[0006] The inner side of the side panel is also provided with multiple liquid hanging holes that are connected to the liquid cavity, and in the arrangement direction of the first plate and the second plate, the multiple liquid hanging holes are located between the liquid inlet and the liquid outlet.

[0007] The technical solution of this application provides multiple electrolyte hanging holes on the inner side of the side panel of the injection cup. These holes allow a portion of the electrolyte to be contained within the electrolyte, thus transforming the contact between the side panel and the liquid as much as possible into liquid-to-liquid contact. This effectively creates a thin electrolyte film wall on the side panel beforehand. This thin electrolyte film wall reduces the contact friction with the electrolyte in the container, preventing additional residual electrolyte from adhering to the wall during subsequent injection. This allows for precise injection of a fixed amount of electrolyte into the battery device, improving the accuracy of the injection process.

[0008] Optionally, the liquid hanging hole extends from one end connected to the liquid-containing cavity and extends in the direction close to the second plate.

[0009] This reduces the possibility of electrolyte overflowing from the hanging holes, which helps improve the stability of the electrolyte film wall formed on the side panel.

[0010] Optionally, the liquid hanging hole is set along an arc or a straight line.

[0011] Therefore, designing the liquid-receiving hole to extend along an arc allows for a longer extension length while minimizing its horizontal space, thus reducing the required thickness of the side panel. Conversely, designing the liquid-receiving hole to extend along a straight line simplifies its shape and structure, improving the ease of machining and forming it.

[0012] Optionally, the distance between the first plate and the second plate is defined as d1, and the projected length of the liquid hanging hole in the arrangement direction of the first plate and the second plate is defined as d2, satisfying the relationship: 0.01≤d2 / d1≤0.9.

[0013] This ensures that the depth of the liquid-holding hole in the vertical direction is neither too small, making it difficult to process, nor too large, making it difficult to process.

[0014] Optionally, the projected length of the liquid hanging hole in the arrangement direction of the first plate and the second plate is defined as d2, satisfying the relationship: 0.1mm≤d2≤200mm.

[0015] This ensures that the depth of the liquid-holding hole in the vertical direction is neither too small, making it difficult to process, nor too large, making it difficult to process.

[0016] Optionally, the area of ​​the inner surface of the side panel is defined as S1, and the sum of the areas of the multiple liquid hanging holes is defined as S2, satisfying the relationship: 0.1≤S2 / S1≤0.95.

[0017] Therefore, the total area occupied by the liquid hanging hole on the inner side of the side panel is neither too small, which would make it inconvenient to process and shape, nor too large, which would make it inconvenient to process and shape.

[0018] Optionally, the area of ​​the liquid-holding hole is defined as s, satisfying the relationship: 0.05mm 2 ≤s≤8000mm 2 .

[0019] This also prevents the electrolyte from flowing out of the orifice of the liquid-holding hole, thus improving the stability of the electrolyte film wall formed on the inner side of the side panel.

[0020] Optionally, the number of liquid-holding holes per unit area is defined as N, satisfying the relationship: 1ea / mm 2 ≤N≤100ea / mm 2 .

[0021] This ensures that the quantity is not too large, which facilitates the arrangement of the required number and size of liquid hanging holes per unit area on the inner side of the side panel, thus improving the convenience of processing and manufacturing the liquid injection cup.

[0022] Optionally, the shape of the liquid hanging hole can be circular or square;

[0023] And / or, the shape, structure and size of each liquid hanging hole are set in the same way;

[0024] And / or, multiple liquid collection holes are evenly spaced;

[0025] And / or, the side panel includes four sub-panels, which are connected end to end, and each of the four sub-panels has a liquid hanging hole on its inner side;

[0026] And / or, the liquid inlet is located in the first plate and at the middle of the first plate; the liquid outlet is located in the second plate and is opposite to the liquid inlet.

[0027] And / or, the injection cup also includes an injection nozzle, which is located on the outside of the liquid-containing cavity and connected to the liquid outlet.

[0028] Therefore, setting the shape of the liquid-holding holes to circular or square allows for a more regular shape, improving the ease of processing and shaping. Setting all liquid-holding holes to have the same shape, structure, and size enables the formation of a more uniform and stable electrolyte film wall on the side panel, and also improves the ease of manufacturing the injection cup. Distributing multiple liquid-holding holes at even intervals ensures uniform liquid storage throughout the side panel, similarly facilitating the formation of a more uniform and stable electrolyte film wall and improving the ease of manufacturing the injection cup. Assembling the side panel into four sub-plates allows the inner side of the side panel to be flat, facilitating the placement of liquid-holding holes on the inner side. Positioning the inlet and outlet holes on the upper first plate and the lower second plate, respectively, with them facing each other, facilitates uniform liquid inlet and outlet from the injection cup. The injection nozzle allows for a more precise seal with the battery's injection port, thus improving injection accuracy.

[0029] Optionally, the inner surface of the side panel is provided with a porous granular coating.

[0030] This allows the inner side of the side panel to absorb the electrolyte more effectively, improving the stability of the electrolyte film wall formed on the side panel.

[0031] Optionally, the porous particle coating may consist of porous particles and a binder.

[0032] This allows the porous particle coating to also have adhesive properties, enabling it to be directly applied and bonded to the inside of the side panel, thus improving the ease of its placement on the side panel.

[0033] Optionally, the porous particles may be made of one or more of the following materials: alumina, zirconium oxide, magnesium oxide, and carbon.

[0034] And / or, the D50 particle size of the porous particles is greater than or equal to 0.001 mm and less than or equal to 10 mm;

[0035] And / or, the adhesive material includes one or more of polyvinylidene fluoride, gelatin, sodium alginate, acrylic acid, or styrene-butadiene rubber.

[0036] This improves the porosity and density of the porous particles, thereby enhancing their absorption of the electrolyte. The binder's material composition also ensures good adhesion.

[0037] Optionally, the component ratio of porous particles is defined as X, satisfying the relationship: 0.1% ≤ X ≤ 99.9%;

[0038] Alternatively, the proportion of adhesive components can be defined as Y, satisfying the relationship: 0.1% ≤ Y ≤ 50%.

[0039] This can improve the porosity of the porous particle coating, thereby enhancing its absorption of electrolyte. Alternatively, it can improve the adhesion of the porous particle coating without compromising its porosity due to excessive component usage.

[0040] This application also proposes a liquid injection device, including the aforementioned liquid injection cup. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of an embodiment of the liquid injection device of this application;

[0043] Figure 2 for Figure 1 A schematic diagram of the structure of the cup module;

[0044] Figure 3 for Figure 2 Schematic diagram of the middle injection cup;

[0045] Figure 4 for Figure 3 A cross-sectional view of the injection cup.

[0046] Explanation of icon numbers:

[0047] label name label name 1000 Liquid injection device 13 Second plate 100 Infusion station 13a liquid outlet 300 Sealed box 131 Injection nozzle 400 pressurization device 15 Side panels 500 Cup Module 15a Liquid hanging hole 10 Liquid injection cup 151 Subplate 10a Fluid-containing cavity 1511 Porous particle coating 11 First plate 3000 Electrical appliances 11a Liquid inlet

[0048] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0051] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0053] Currently, battery devices are increasingly widely used in daily life and industry as energy supply devices. Specifically, battery devices can be applied to energy storage power systems such as hydropower, thermal power, wind power, and solar power plants. They can also be used to supply energy for electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields.

[0054] The battery device proposed in this application can be a rechargeable battery. That is, after discharge, the battery device can be recharged to activate the active materials and continue to be used. For example, the battery device can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, or lead-acid battery, etc. This application does not limit the type of battery device.

[0055] Furthermore, regardless of the type of battery device, it basically includes a casing, electrode components housed within the casing, and an electrolyte. Therefore, during the battery device manufacturing process, it is typically necessary to inject the electrolyte into the battery device using an injection device. Moreover, to facilitate control of the amount of electrolyte injected into the battery device, the injection device in related technologies usually injects a fixed amount of electrolyte into an injection cup, and then applies pressure to force the electrolyte in the injection cup into the battery device.

[0056] However, due to the van der Waals forces between the electrolyte and the injection cup, liquid adheres to the walls of the injection cup. Therefore, after the injection device completes the injection, residual liquid usually remains in the injection cup, preventing the complete transfer of the pre-quantitatively injected electrolyte into the battery device and thus affecting the accuracy of the injection process.

[0057] Therefore, based on the above considerations, in order to solve the problem of low injection accuracy caused by electrolyte adhesion within the injection cup in related technologies, this application proposes a novel injection cup. This injection cup innovatively features multiple electrolyte adhesion holes on the inner side of its side panel. These holes hold a portion of the electrolyte, achieving pre-treatment of the electrolyte film on the inner side of the injection cup, thus preventing the generation of additional residual electrolyte during subsequent injection and improving the injection accuracy of the injection device.

[0058] In addition, it should be noted that the liquid injection device used in the liquid injection cup proposed in this application can be used for liquid injection of electrolyte into battery devices as described above, and can also be used for liquid injection of other types of liquids into other devices. This application does not limit this.

[0059] For ease of explanation, the example of using a liquid injection device to inject liquid into a battery device will be used as follows:

[0060] Please refer to the reference. Figure 1 and Figure 2In one embodiment of this application, the liquid injection device 1000 may include a liquid injection cup 10, a liquid injection station 100, a sealed box 300, and a pressurizing device 400. The liquid injection station 100 can be connected to the liquid inlet hole 11a on the liquid injection cup 10 through a pipe, and the pressurizing device 400 can be connected to the sealed box 300.

[0061] The injection station 100 is used to inject electrolyte into the injection cup 10. The injection station 100 may include a storage container that is connected to the inlet port 11a of the injection cup 10, thereby allowing the electrolyte to enter the injection cup 10 by gravity. In some embodiments, the injection station 100 may further include an air pump, a positive pressure tank, or a piston slidably disposed within the storage container to pressurize and force the electrolyte into the injection cup 10.

[0062] The sealed box 300 can be used to provide a sealed space for the subsequent placement of the liquid filling cup 10 and the battery device 2000.

[0063] The pressurizing device 400 can be used to pressurize the sealed box 300. The pressurizing device 400 can be an air pump or a positive pressure tank, etc.

[0064] Furthermore, the electrolyte injection process of the electrolyte injection device 1000 can be specifically as follows: First, the electrolyte injection cup 10 is connected to the electrolyte injection hole on the battery device 2000 through its outlet hole 13a; then, a preset amount of electrolyte is injected into the electrolyte injection cup 10 through the electrolyte injection station 100; then, the electrolyte injection cup 10 and the battery device 2000 can be transferred together into the sealed box 300; then, the sealed box 300 can be pressurized by the pressurizing device 400 to drive the electrolyte in the electrolyte injection cup 10 into the battery device 2000, thereby completing the electrolyte injection of the battery device 2000.

[0065] Furthermore, it should be noted that the liquid injection device 1000 proposed in this application may include only one liquid injection cup 10. Of course, it may also include at least two liquid injection cups 10 to form a cup module 500. In this case, the cup module 500 can realize the simultaneous liquid injection of at least two battery devices 2000 at one time, thereby improving the liquid injection efficiency of the liquid injection device 1000.

[0066] The structure of the injection cup 10 proposed in this application will be explained and illustrated by the following embodiments:

[0067] Please refer to the reference. Figure 3 and Figure 4In one embodiment of this application, the liquid injection cup 10 proposed in this application includes a first plate 11 and a second plate 13 arranged at relative intervals, and a side plate 15 disposed between the first plate 11 and the second plate 13. The first plate 11, the second plate 13 and the side plate 15 are configured to enclose a liquid-containing cavity 11a. The first plate 11 or the side plate 15 is provided with an inlet hole 11a communicating with the liquid-containing cavity 10a, and the second plate 13 or the side plate 15 is provided with an outlet hole 13a communicating with the liquid-containing cavity 10a. The inner side of the side plate 15 is also provided with a plurality of hanging holes 15a communicating with the liquid-containing cavity 11a, and in the arrangement direction of the first plate 11 and the second plate 13, the plurality of hanging holes 15a are all located between the inlet hole 11a and the outlet hole 13a.

[0068] In this embodiment, when the injection cup 10 is in normal use, the first plate 11 and the second plate 13 can be arranged sequentially from top to bottom. Further, on the horizontal projection plane, the projections of the first plate 11 and the second plate 13 can be squares; the square proposed in this application includes squares and rectangles. Of course, in other embodiments, the projections of the first plate 11 and the second plate 13 can also be circular or other shapes. Therefore, this application does not limit the shape of the first plate 11 and the second plate 13. Additionally, the projected shapes of the first plate 11 and the second plate 13 can be the same, for example, both being squares. Of course, in other embodiments, the projected shapes of the first plate 11 and the second plate 13 can also be different.

[0069] The side panel 15 can be used to connect the first plate 11 and the second plate 13 so that the three can enclose and form a liquid cavity 11a. The side panel 15 can extend circumferentially along the first plate 11 and the second plate 13. For example, when the first plate 11 and the second plate 13 are square in shape on the horizontal projection plane as described above, the side panel 15 can be four sub-plates 151 connected end-to-end as described below, to form a corresponding square shape. Furthermore, in this case, on the horizontal projection plane, the outer contour projection of the side panel 15 can coincide with the outer contour projection of the first plate 11 and the second plate 13, or the outer contour projection of the side panel 15 can be located within the outer contour projection of the first plate 11 and the second plate 13. Alternatively, the shape of the side panel 15 on the horizontal projection plane may be different from the projected shape of the first plate 11 and the second plate 13. For example, the projected shape of the first plate 11 and the second plate 13 may be circular, while the projected shape of the side panel 15 may be square. Therefore, this application does not limit the shape of the injection cup 10. In addition, the first plate 11, the second plate 13 and the side plate 15 can be set as an integral structure, or they can be set as separate structures and then assembled by any connection method such as welding or bonding.

[0070] The inlet hole 11a can be used to communicate with the injection station 100 in the injection device 1000 described above, so that the injection station 100 can inject liquid into the liquid-containing chamber 11a of the injection cup 10. The inlet hole 11a can be located on the first plate 11 or on the side plate 15. Furthermore, the inlet hole 11a can be circular or square. Therefore, this application does not limit the position or shape of the inlet hole 11a.

[0071] The outlet hole 13a can be used to communicate with the electrolyte filling hole on the battery device 2000 described above, so that the electrolyte in the liquid-containing cavity 11a of the filling cup 10 can be transferred into the battery device 2000. The outlet hole 13a can be located on the second plate 13, or it can be located on the side plate 15. Furthermore, the outlet hole 13a can be circular or square. Therefore, this application does not limit the position or shape of the outlet hole 13a.

[0072] The liquid hanging holes 15a can form a "honeycomb" type on the inner side of the side panel 15, allowing some electrolyte to enter into each liquid hanging hole 15a when the electrolyte enters the injection cup 10. In the arrangement direction of the first plate 11 and the second plate 13, multiple liquid hanging holes 15a are located between the inlet holes 11a and the outlet holes 13a. That is, when the first plate 11 and the second plate are arranged sequentially from top to bottom as described above, the height of the inlet holes 11a can be above all the liquid hanging holes 15a, and the height of the outlet holes 13a can be below all the liquid hanging holes 15a. Furthermore, the shape of the liquid hanging holes 15a can be circular, square, or other polygonal. In addition, the liquid hanging holes 15a can extend horizontally; they can also extend horizontally first, and then downwards or towards the second plate 13; or they can extend directly downwards in an arc or a straight line. Therefore, this application does not limit the shape or structure of the liquid-holding holes 15a. Furthermore, the shape and size of each liquid-holding hole 15a can be the same, or they can be different. Additionally, the liquid-holding holes 15a can be evenly spaced, or they can be irregularly distributed.

[0073] The technical solution of this application provides multiple electrolyte hanging holes 15a on the inner side of the side plate 15 of the injection cup 10. These holes allow a portion of the electrolyte to be contained within the liquid, thus transforming the contact between the side plate 15 and the liquid as much as possible into liquid-to-liquid contact. This effectively creates a thin electrolyte film wall on the side plate 15. This thin film wall reduces the contact friction with the electrolyte in the liquid-containing cavity 10a, preventing additional residual electrolyte buildup during subsequent injection. This allows for precise injection of a measured amount of electrolyte into the battery device 2000, improving the accuracy of the injection device 1000.

[0074] Please refer to Figure 4 In one embodiment of this application, the liquid hanging hole 15a extends from one end connected to the liquid-containing cavity 11a and extends in a direction close to the second plate 13.

[0075] When the first plate 11 is positioned above the second plate 13 as described above, the liquid hanging hole 15a extends downward from one end connected to the liquid-containing cavity 11a, or the end with the opening. The liquid hanging hole 15a can extend along an arc, a straight line, or a curve.

[0076] In this embodiment, the liquid hanging hole 15a is configured to extend downwards, so that the opening of the liquid hanging hole 15a is above the entire hole section of the liquid hanging hole 15a, which makes it less likely for electrolyte to overflow from the liquid hanging hole 15a, and helps to improve the stability of the electrolyte film wall formed on the side panel 15.

[0077] Please refer to Figure 4 In one embodiment of this application, the liquid hanging hole 15a is provided to extend along an arc.

[0078] The liquid hanging hole 15a extends along an arc, meaning that the liquid hanging hole 15a has an arc shape and its axis can be located within the liquid-containing cavity 10a.

[0079] In this embodiment, the liquid hanging hole 15a is configured to extend along an arc, which is beneficial to extend the extension length of the liquid hanging hole 15a while minimizing the space occupied in the horizontal direction, so as to reduce the required thickness of the side panel 15, thereby reducing the volume of the liquid injection cup 10 and reducing manufacturing costs.

[0080] In one embodiment of this application, the liquid hanging hole 15a is provided to extend along a straight line.

[0081] The liquid hanging hole 15a extends along a straight line, that is, the linear shape of the liquid hanging hole 15a is set at an angle to both the vertical and horizontal directions.

[0082] In this embodiment, the liquid hanging hole 15a is set to extend along a straight line, which makes the shape and structure of the liquid hanging hole 15a more regular, thereby improving the convenience of processing and forming the liquid hanging hole 15a.

[0083] Please refer to Figure 4 In one embodiment of this application, the distance between the first plate 11 and the second plate 13 is defined as d1, and the projected length of the liquid hanging hole 15a in the arrangement direction of the first plate 11 and the second plate 13 is d2, satisfying the relationship: 0.01≤d2 / d1≤0.9.

[0084] d1 can also be described as the distance between the lower surface of the first plate 11 and the upper surface of the second plate 13. d2 can also be described as the vertical distance between the highest point of the upper opening of the liquid hanging hole 15a and the lowest point of the bottom of the hole.

[0085] In this embodiment, the ratio of d2 to d1 is set to between 0.01 and 0.9, ensuring that the depth of the liquid-holding hole 15a in the vertical direction is neither too small nor too large, thus avoiding difficulties in processing and forming. The ratio of d2 to d1 can be 0.01, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, or 0.9, or any value within the above range.

[0086] In one embodiment of this application, the projected length of the liquid hanging hole 15a in the arrangement direction of the first plate 11 and the second plate 13 is defined as d2, which satisfies the relationship: 0.1mm≤d2≤200mm.

[0087] In this embodiment, the value of d2 is set to 0.1mm to 200mm, which can also achieve the same result as described above, ensuring that the depth of the liquid hanging hole 15a in the vertical direction is neither too small nor too large, thus avoiding difficulties in processing and forming. The value of d2 can be: 0.1mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm, 95mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 175mm, 180mm, 185mm, 190mm, 195mm, or 200mm, or any value within the above range.

[0088] In one embodiment of this application, the area of ​​the inner surface of the side panel 15 is defined as S1, and the sum of the areas of the plurality of liquid hanging holes 15a is defined as S2, satisfying the relationship: 0.1≤S2 / S1≤0.95.

[0089] S1, when the injection cup 10 is square and the side plate 15 includes four sub-plates 151 as described below, can be the sum of the inner surfaces of the four sub-plates 151. S2, on the other hand, is the sum of the areas of all the liquid hanging holes 15a. The area of ​​the liquid hanging hole 15a can be considered the area of ​​its opening, or its cross-sectional area.

[0090] In this embodiment, the ratio of S2 to S1 is set to between 0.1 and 0.95, ensuring that the total area occupied by the liquid-holding hole 15a on the inner side of the side panel 15 is neither too small nor too large, thus avoiding difficulties in processing and forming. The ratio of S2 to S1 can be 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, or 0.95, or any value within the above range.

[0091] In one embodiment of this application, the area of ​​the liquid hanging hole 15a is defined as s, satisfying the relationship: 0.05mm. 2 ≤s≤8000mm 2 .

[0092] In this embodiment, the value of s is set to 0.05mm. 2 Up to 8000mm 2 This design ensures that the area of ​​the liquid-holding hole 15a is neither too small, making it difficult to process, nor too large, making it difficult to process. Simultaneously, it prevents the electrolyte from easily flowing out of the opening of the liquid-holding hole 15a, improving the stability of the electrolyte film wall formed on the inner side of the side panel 15. The value of s can be 0.05 mm. 2 100mm 2 200mm 2 300mm 2 400mm 2 500mm 2 600mm 2 700mm 2 800mm 2 900mm 2 1000mm 2 1100mm 2 1200mm 2 1300mm 2 1400mm2 、1500mm 2 、1600mm 2 、1700mm 2 、1800mm 2 、1900mm 2 、2000mm 2 、2100mm 2 、2200mm 2 、2300mm 2 、2400mm 2 、2500mm 2 、2600mm 2 、2700mm 2 、2800mm 2 、2900mm 2 、3000mm 2 、3100mm 2 、3200mm 2 、3300mm 2 、3400mm 2 、3500mm 2 、3600mm 2 、3700mm 2 、3800mm 2 、3900mm 2 、4000mm 2 、4100mm 2 、4200mm 2 、4300mm 2 、4400mm 2 、4500mm 2 、4600mm 2 、4700mm 2 、4800mm 2 、4900mm 2 、5000mm 2 、5100mm 2 、5200mm 2 、5300mm 2 、5400mm 2 、5500mm 2 、5600mm 2 、5700mm 2 、5800mm 2 、5900mm 2 、6000mm 2 、6100mm 2 、6200mm 2 、6300mm 2 、6400mm2 6500mm 2 6600mm 2 6700mm 2 6800mm 2 6900mm 2 7000mm 2 7100mm 2 7200mm 2 7300mm 2 7400mm 2 7500mm 2 7600mm 2 7700mm 2 7800mm 2 7900mm 2 Or 8000mm 2 Of course, it can also be any value within the above range.

[0093] In one embodiment of this application, the number of liquid-holding holes 15a per unit area is defined as N, satisfying the relationship: 1ea / mm 2 ≤N≤100ea / mm 2 .

[0094] In this embodiment, the number of liquid-holding holes 15a per unit area is set to 1 to 100 ea / mm. 2 This ensures that the quantity is not excessive, thus facilitating the arrangement of the required number and size of liquid-holding holes 15a per unit area on the inner side of the side panel 15, and improving the ease of processing and manufacturing the liquid-filling cup 10. The value of N can be 1ea / mm. 2 5ea / mm 2 10ea / mm 2 15ea / mm 2 20ea / mm 2 25ea / mm 2 30ea / mm 2 35ea / mm 2 40ea / mm 2 45ea / mm 2 50ea / mm 2 55ea / mm 2 60ea / mm 2 65ea / mm 2 70ea / mm 2 75ea / mm 2 80ea / mm 2 85ea / mm 2 90ea / mm 295ea / mm 2 Or 100ea / mm 2 Of course, it can also be any value within the above range.

[0095] Please refer to Figure 4 In one embodiment of this application, the shape of the liquid hanging hole 15a is circular or square.

[0096] In this embodiment, the shape of the liquid hanging hole 15a is set to be circular or square, which makes the shape of the liquid hanging hole 15a more regular, thereby improving the convenience of processing and shaping the liquid hanging hole 15a.

[0097] Please refer to Figure 4 In one embodiment of this application, the shape, structure and size of each liquid hanging hole 15a are set in the same way.

[0098] The shape, structure, and size are the same, meaning that the shape of each liquid hanging hole 15a can be the same, for example, all can be set to be circular; at the same time, the structure type can also be the same, for example, all can be set to extend along an arc; and the area of ​​the liquid hanging hole 15a can be the same.

[0099] In this embodiment, the shape, structure, and size of each liquid-holding hole 15a are set to be the same, which can make the liquid storage in each liquid-holding hole 15a uniform, so as to form a more uniform and stable electrolyte film wall on the side plate 15. At the same time, it can also make the structure of the side plate 15 more regular, so as to simplify the structure of the side plate 15 and improve the convenience of processing and manufacturing the liquid injection cup 10.

[0100] Please refer to Figure 4 In one embodiment of this application, the plurality of liquid hanging holes 15a are evenly spaced.

[0101] When the side panel 15 includes four sub-plates 151 as described below, the liquid hanging holes 15a on each sub-plate 151 can be arranged at uniform intervals. Specifically, the uniform interval distribution can be a rectangular array or a circular array.

[0102] In this embodiment, the multiple liquid-holding holes 15a are arranged at uniform intervals, which makes the liquid storage uniform throughout the side plate 15, so as to form a more uniform and stable electrolyte film wall on the side plate 15. At the same time, it can also make the structure of the side plate 15 more regular, thereby simplifying the structure of the side plate 15 and improving the convenience of processing and manufacturing the liquid-filling cup 10.

[0103] Please refer to the reference. Figure 3 and Figure 4In one embodiment of this application, the side panel 15 includes four sub-panels 151, which are connected end to end, and each of the four sub-panels 151 has a liquid hanging hole 15a on its inner side.

[0104] The four sub-plates 151 can be arranged in pairs facing each other. Moreover, the size of the four sub-plates 151 can be set to be the same.

[0105] In this embodiment, the side panel 15 is provided with four sub-panels 151, which makes the inner side of the side panel 15 flat, thus facilitating the provision of liquid hanging holes 15a on the inner side of the side panel 15. At the same time, the liquid injection cups 10 can also be formed into square shapes, which facilitates the compact arrangement of the liquid injection cups 10 when at least two liquid injection cups 10 are needed to form a cup module 500 for use, for example, forming at least one row and / or one column.

[0106] Please refer to the reference. Figure 3 and Figure 4 In one embodiment of this application, the liquid inlet 11a is provided on the first plate 11 and located in the middle of the first plate 11; the liquid outlet 13a is provided on the second plate 13 and is arranged opposite to the liquid inlet 11a.

[0107] In this embodiment, the inlet hole 11a and the outlet hole 13a are respectively located on the upper first plate 11 and the lower second plate 13, and are arranged opposite to each other, which facilitates uniform liquid inlet and outlet of the injection cup 10. Furthermore, this ensures that the inlet hole 11a and the outlet hole 13a do not interfere with the multiple hanging holes 15a provided on the side plate 15, thus facilitating the arrangement of multiple hanging holes 15a on the side plate 15.

[0108] Please refer to Figure 3 In one embodiment of this application, the injection cup 10 further includes an injection nozzle 131, which is disposed on the outside of the liquid-containing cavity 10a and communicates with the liquid outlet 13a.

[0109] The injection nozzle 131 can be adapted to connect with the injection port on the battery device 2000. The injection nozzle 131 can be located on the underside of the second plate 13 of the injection unit.

[0110] In this embodiment, the injection nozzle 131 can be more accurately sealed to the injection hole of the battery device 2000, thereby improving the accuracy of injection.

[0111] Please refer to Figure 4 In one embodiment of this application, the inner surface of the side panel 15 is provided with a porous particle coating 1511.

[0112] In this embodiment, a porous particulate coating 1511 is provided on the inner surface of the side panel 15, so that the inner side of the side panel 15 can more effectively absorb the electrolyte, thereby improving the stability of the electrolyte film wall formed on the side panel 15.

[0113] In one embodiment of this application, the porous particle coating 1511 comprises porous particles and a binder.

[0114] Porous particles may include one or more of alumina, zirconium oxide, magnesium oxide, and carbon materials to achieve a good porous effect, thereby improving the absorption of electrolyte; at the same time, they will not react with the electrolyte, thus also contributing to the improvement of electrolyte stability. The binder may include one or more of polyvinylidene fluoride, gelatin, sodium alginate, acrylic acid, or styrene-butadiene rubber to provide good adhesion.

[0115] In this embodiment, the porous particle coating 1511 is configured to include porous particles and an adhesive, so that the porous particle coating 1511 can also have adhesive properties, and thus the porous particle coating 1511 can be directly applied and bonded to the inner side of the side panel 15, thereby improving the convenience of its arrangement on the side panel 15.

[0116] In one embodiment of this application, the D50 particle size of the porous particles is greater than or equal to 0.001 mm and less than or equal to 10 mm.

[0117] In this embodiment, the D50 particle size of the porous particles is set to be between 0.001 mm and 10 mm. This ensures that the particle size is not too large, thereby increasing the density of the porous particles and improving the absorption effect of the porous particle coating 1511 on the electrolyte. The D50 particle size can be 0.001 mm, 0.01 mm, 0.1 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, or any value within the above range.

[0118] In one embodiment of this application, the component ratio of porous particles is defined as X, satisfying the relationship: 0.1% ≤ X ≤ 99.9%.

[0119] In this embodiment, setting the component ratio X of the porous particles to a value between 0.1% and 99.9% can improve the porosity of the porous particle coating 1511, thereby enhancing the absorption effect of the electrolyte. The component ratio X of the porous particles can be 0.1%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 99.9%, or any value within the above range.

[0120] In one embodiment of this application, the component ratio of the adhesive is defined as Y, satisfying the relationship: 0.1% ≤ Y ≤ 50%.

[0121] In this embodiment, the component ratio Y of the adhesive is set to 0.1% to 50%, which can improve the adhesion effect of the porous particle coating 1511 without affecting the porosity of the porous particle coating 1511 due to excessive component usage. The component ratio Y of the adhesive can be 0.1%, 10%, 20%, 30%, 40%, or 50%, or any value within the above range.

[0122] Please refer to the reference. Figure 3 and Figure 4 In one embodiment of this application, the injection cup 10 includes a first plate 11 and a second plate 13 arranged at relative intervals, and a side plate 15 disposed between the first plate 11 and the second plate 13. The first plate 11, the second plate 13, and the side plate 15 are configured to enclose a liquid-containing cavity 11a. The first plate 11 or the side plate 15 is provided with an inlet hole 11a communicating with the liquid-containing cavity 10a, and the second plate 13 or the side plate 15 is provided with an outlet hole 13a communicating with the liquid-containing cavity 10a. The inner side of the side plate 15 is also provided with a plurality of hanging holes 15a communicating with the liquid-containing cavity 11a, and in the arrangement direction of the first plate 11 and the second plate 13, the plurality of hanging holes 15a are all located between the inlet hole 11a and the outlet hole 13a. The hanging holes 15a extend from one end communicating with the liquid-containing cavity 11a in a direction close to the second plate 13. The hanging holes 15a extend along an arc. The distance between the first plate 11 and the second plate 13 is defined as d1. The projected length of the liquid-holding hole 15a in the arrangement direction of the first plate 11 and the second plate 13 is defined as d2, satisfying the relationship: 0.01≤d2 / d1≤0.9. The projected length of the liquid-holding hole 15a in the arrangement direction of the first plate 11 and the second plate 13 is defined as d2, satisfying the relationship: 0.1mm≤d2≤200mm. The area of ​​the inner surface of the side panel 15 is defined as S1, and the sum of the areas of the multiple liquid-holding holes 15a is defined as S2, satisfying the relationship: 0.1≤S2 / S1≤0.95. The area of ​​the liquid-holding hole 15a is defined as s, satisfying the relationship: 0.05mm². 2 ≤s≤8000mm 2 Define the number of liquid-holding holes per unit area of ​​15a as N, satisfying the relationship: 1ea / mm 2 ≤N≤100ea / mm 2The shape of the liquid hanging holes 15a is circular or square; the shape, structure and size of each liquid hanging hole 15a are the same; multiple liquid hanging holes 15a are evenly spaced; the side plate 15 includes four sub-plates 151, which are connected end to end, and each of the four sub-plates 151 has a liquid hanging hole 15a on its inner side; the liquid inlet hole 11a is located in the middle of the first plate 11; the liquid outlet hole 13a is located in the second plate 13 and is opposite to the liquid inlet hole 11a; the liquid injection cup 10 also includes a liquid injection nozzle 131, which is located on the outside of the liquid-containing cavity 10a and communicates with the liquid outlet hole 13a. The characteristic feature is that the inner surface of the side plate 15 is provided with a porous particle coating 1511. The porous particle coating 1511 consists of porous particles and a binder. The porous particles are made of one or more of the following materials: alumina, zirconium oxide, magnesium oxide, and carbon. The D50 particle size of the porous particles is greater than or equal to 0.001 mm and less than or equal to 10 mm. The binder is made of one or more of the following materials: polyvinylidene fluoride, gelatin, sodium alginate, acrylic acid, or styrene-butadiene rubber. The component ratio of the porous particles is defined as X, satisfying the relationship: 0.1% ≤ X ≤ 99.9%.

[0123] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A liquid injection cup, characterized in that, It includes a first plate and a second plate arranged at relative intervals, and a side panel, wherein the first plate, the second plate, and the side panel are configured to enclose a liquid cavity; The first plate or the side panel is provided with a liquid inlet hole communicating with the liquid cavity, and the second plate or the side panel is provided with a liquid outlet hole communicating with the liquid cavity; The inner side of the side panel is also provided with a plurality of liquid hanging holes that communicate with the liquid cavity, and in the arrangement direction of the first plate and the second plate, the plurality of liquid hanging holes are located between the liquid inlet and the liquid outlet.

2. The injection cup as described in claim 1, characterized in that, The liquid hanging hole is connected to one end of the liquid-containing cavity and extends along the direction close to the second plate.

3. The injection cup as described in claim 2, characterized in that, The liquid hanging holes are provided to extend along an arc or a straight line.

4. The injection cup as described in claim 2, characterized in that, The distance between the first plate and the second plate is defined as d1, and the projected length of the liquid hanging hole in the arrangement direction of the first plate and the second plate is defined as d2, satisfying the relationship: 0.01≤d2 / d1≤0.

9.

5. The injection cup as described in claim 2, characterized in that, The projected length of the liquid-holding hole in the arrangement direction of the first plate and the second plate is defined as d2, which satisfies the relationship: 0.1mm≤d2≤200mm.

6. The injection cup as described in claim 1, characterized in that, The area of ​​the inner surface of the side panel is defined as S1, and the sum of the areas of the plurality of liquid hanging holes is defined as S2, satisfying the relationship: 0.1≤S2 / S1≤0.

95.

7. The injection cup as described in claim 1, characterized in that, Let the area of ​​the liquid-holding hole be s, satisfying the relationship: 0.05mm. 2 ≤s≤8000mm 2 .

8. The injection cup as described in claim 1, characterized in that, The number of liquid-holding holes per unit area is defined as N, satisfying the relationship: 1ea / mm 2 ≤N≤100ea / mm 2 .

9. The injection cup as described in claim 1, characterized in that, The shape of the liquid hanging hole is circular or square; And / or, the shape, structure and size of each of the liquid hanging holes are set in the same way; And / or, the plurality of said liquid-holding holes are evenly spaced; And / or, the side panel includes four sub-panels, which are connected end to end, and the liquid hanging holes are provided on the inner side of each of the four sub-panels; And / or, the liquid inlet is provided on the first plate and located in the middle of the first plate; the liquid outlet is provided on the second plate and is arranged opposite to the liquid inlet; And / or, the injection cup further includes an injection nozzle, which is located outside the liquid-containing cavity and communicates with the liquid outlet.

10. The injection cup according to any one of claims 1 to 9, characterized in that, The inner surface of the side panel is provided with a porous granular coating.

11. The injection cup as described in claim 10, characterized in that, The porous particle coating consists of porous particles and a binder.

12. The injection cup as described in claim 11, characterized in that, The porous particles are made of one or more of the following materials: alumina, zirconium oxide, magnesium oxide, and carbon materials. And / or, the D50 particle size of the porous particles is greater than or equal to 0.001 mm and less than or equal to 10 mm; And / or, the adhesive material includes one or more of polyvinylidene fluoride, gelatin, sodium alginate, acrylic acid, or styrene-butadiene rubber.

13. The injection cup as described in claim 11, characterized in that, The component ratio of the porous particles is defined as X, satisfying the relationship: 0.1% ≤ X ≤ 99.9%; Alternatively, the component ratio of the adhesive can be defined as Y, satisfying the relationship: 0.1% ≤ Y ≤ 50%.

14. A liquid injection device, characterized in that, Includes the injection cup as described in any one of claims 1 to 13.

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