Auxiliary tool and battery infiltration system

Abstract

The utility model belongs to the field of lithium battery infiltration, and particularly relates to an auxiliary tool and a battery infiltration system.The auxiliary tool comprises two extrusion assemblies; the supporting assembly is used for supporting the extrusion assembly; the two extrusion assemblies are oppositely arranged and are suitable for extruding the two side surfaces of the battery to be infiltrated. The two extrusion assemblies are arranged to extrude the two side surfaces of the battery in the infiltration process, so that the flowing speed of electrolyte in the battery is accelerated, the infiltration speed of the battery is improved, meanwhile, gas in a gas accumulation area can be emptied through extrusion, the infiltration effect of the battery is improved, and the battery quality is improved. Side reaction or metal lithium precipitation of the battery in the subsequent use process is avoided, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of battery infiltration, in particular to an auxiliary tooling and a battery infiltration system. Background Technique

[0002] During the infiltration process of lithium-ion batteries, electrolyte is injected into the battery core to wet materials such as electrode sheets and separators.

[0003] In related technologies, since the speed of injecting electrolyte into the battery core is much greater than the speed at which the internal materials of the battery core absorb the electrolyte, when implementing the infiltration process, the liquid level height of the electrolyte in the internal cavity of the battery core often exceeds the height of the battery core. The electrolyte seeps inward from both the upper and lower ends (winding structure) or from all around (stacked structure) simultaneously, resulting in the phenomenon of blocking the gas discharge. The internal gas cannot be discharged and accumulates, and the gas accumulation area is difficult to be infiltrated by the electrolyte.

[0004] Moreover, even when using the method of vacuum pressure relief, since the materials near the exhaust holes have been infiltrated, hindering gas circulation, the gas in the gas accumulation area is still very difficult to be completely exhausted. The resulting poor infiltration will have a serious impact on the battery life. During the use of the battery, side reactions or precipitation of metallic lithium will occur in the poorly infiltrated area, ultimately leading to battery failure.

[0005] Therefore, how to accelerate the infiltration speed of the battery is an urgent problem to be solved at present. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an auxiliary tooling and a battery infiltration system.

[0007] To solve the above technical problems, the utility model provides an auxiliary tooling, including:

[0008] Two extrusion components; and

[0009] A support component for supporting the extrusion components;

[0010] The two extrusion components are arranged oppositely and are adapted to squeeze two sides of the battery to be infiltrated.

[0011] Further, the extrusion component includes a slide rail and an extrusion roller;

[0012] The extrusion roller is slidably connected to the slide rail and is in contact with the side of the battery to be infiltrated.

[0013] Further, a sliding groove is provided on the opposite surface of the slide rail and the battery to be infiltrated;

[0014] The extrusion roller is slidably arranged in the sliding groove.

[0015] Further, the extrusion assembly further includes a connecting frame;

[0016] The extrusion roller is rotatably connected to the connecting frame;

[0017] The connecting frame is slidably connected in the sliding groove.

[0018] Further, limiting grooves are provided at the top and bottom of the sliding groove;

[0019] One side of the connecting frame away from the extrusion roller is snapped into the limiting groove.

[0020] Further, a bearing is rotatably provided on the connecting frame;

[0021] The connecting frame is rollingly connected in the limiting groove through the bearing.

[0022] Further, the extrusion assembly further includes a first driving part;

[0023] The first driving part is fixedly provided on the slide rail and is adapted to drive the extrusion roller to reciprocate along the slide rail.

[0024] Further, the first driving part is any one of a cylinder, a servo motor and a steering gear.

[0025] Further, the two extrusion assemblies are slidably arranged on the support assembly and are adapted to move towards or away from each other under the drive of an external driving force.

[0026] The present utility model also provides a battery infiltration system, including

[0027] an electrolyte injection device, an auxiliary tooling and a battery to be infiltrated;

[0028] The battery to be infiltrated is placed in the auxiliary tooling;

[0029] The electrolyte injection device is communicated with the liquid injection port of the battery to be infiltrated;

[0030] The auxiliary tooling is adapted to extrude two side surfaces of the battery to be infiltrated.

[0031] The beneficial effects of the present utility model are that the present utility model provides an auxiliary tooling and a battery infiltration system. Among them, the auxiliary tooling extrudes two side surfaces of the battery during the infiltration process through the arrangement of two extrusion assemblies, accelerates the flow rate of the electrolyte inside the battery, thereby improving the infiltration speed of the battery. At the same time, the gas in the gas accumulation area can be emptied through extrusion, improving the infiltration effect of the battery, avoiding side reactions or precipitation of metallic lithium during the subsequent use of the battery, and improving the battery life. Description of the Drawings

[0032] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 It is a schematic structural diagram of an auxiliary tooling and a battery to be infiltrated provided by an embodiment of the present utility model.

[0034] Figure 2 It is a front view of an auxiliary tooling and a battery to be infiltrated provided by an embodiment of the present utility model.

[0035] Figure 3 It is a schematic structural diagram of an extrusion assembly provided by an embodiment of the present utility model.

[0036] In the figure: 110, extrusion assembly; 111, slide rail; 1111, sliding groove; 1112, limiting groove; 112, extrusion roller; 113, connecting frame; 1131, bearing; 114, first driving part; 120, support assembly; 121, second driving part; 121, working platform; 200, battery to be infiltrated. Specific embodiments

[0037] The present utility model will now be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0038] Embodiment, please refer to Figures 1 - 3 , at least one embodiment provides an auxiliary tooling, including: two extrusion assemblies 110; and a support assembly 120 for supporting the extrusion assemblies 110; the two extrusion assemblies 110 are arranged opposite to each other and are adapted to extrude two sides of the battery 200 to be infiltrated. By providing two extrusion assemblies 110 to extrude two sides of the battery during the infiltration process, the flow rate of the electrolyte inside the battery is accelerated, thereby improving the infiltration speed of the battery. At the same time, through extrusion, the gas in the gas accumulation area can be emptied, improving the infiltration effect of the battery, avoiding side reactions or precipitation of metallic lithium during the subsequent use of the battery, and improving the battery life.

[0039] Among them, the support assembly 120 is a working platform 121. In some embodiments, columns can be provided below the working platform 121 to fix the working platform 121 at a height convenient for operation by staff.

[0040] In order to meet the extrusion requirements for batteries of different thicknesses, in at least one embodiment, the two extrusion assemblies 110 are slidably arranged on the support assembly 120 and are adapted to move towards or away from each other under the drive of an external driving force. In other embodiments, among the two extrusion assemblies 110, as long as one of them can slide, that is, as long as the distance between the two extrusion assemblies 110 can be adjusted, the technical solutions are within the protection scope of this application.

[0041] Among them, the extrusion assembly 110 can be driven by a second driving part 121, and the second driving part 121 can be, but is not limited to, a cylinder, a servo motor, and a steering gear.

[0042] The structure of the extrusion assembly 110 will be described below. In at least one embodiment, the extrusion assembly 110 includes a slide rail 111 and an extrusion roller 112; the extrusion roller 112 is slidably connected to the slide rail 111 and is in contact with the side surface of the battery 200 to be infiltrated. Since the extrusion roller 112 is in contact with the side surface of the battery 200 to be infiltrated, the extrusion roller 112 applies an extrusion force to the side surface of the infiltrated battery and reciprocates along the length direction of the battery 200 to be infiltrated, thereby extruding the electrolyte in the battery, accelerating the flow of the electrolyte, improving the infiltration speed of the battery. At the same time, the gas in the gas accumulation area can be emptied through extrusion, improving the infiltration effect of the battery.

[0043] Please refer to Figures 2 - 3 , among which, a sliding groove 1111 is opened on the opposite surface of the slide rail 111 and the battery 200 to be infiltrated; the extrusion roller 112 is slidably arranged in the sliding groove 1111. By providing the sliding groove 1111, the sliding of the extrusion roller 112 is limited, and at the same time, the friction between the slide rail 111 and the extrusion roller 112 is reduced.

[0044] In at least one embodiment, the extrusion assembly 110 further includes a connecting frame 113; the extrusion roller 112 is rotatably connected to the connecting frame 113; the connecting frame 113 is slidably connected to the sliding groove 1111. Among them. The connecting frame 113 is triangular to ensure the stability of the extrusion roller 112. The extrusion roller 112 is rotatably connected to the connecting frame 113 through a rotating shaft.

[0045] Specifically, limiting grooves 1112 are opened at the top and bottom of the sliding groove 1111; the side of the connecting frame 113 away from the extrusion roller 112 is snapped into the limiting grooves 1112.

[0046] In order to improve the sliding effect of the connecting frame 113 in the limiting grooves 1112, in at least one embodiment, a bearing 1131 is rotatably arranged on the connecting frame 113; the connecting frame 113 is rollingly connected in the limiting grooves 1112 through the bearing 1131.

[0047] To drive the extrusion assembly 110, in at least one embodiment, the extrusion assembly 110 further includes a first driving part 114; the first driving part 114 is fixedly arranged on the slide rail 111 and is adapted to drive the extrusion roller 112 to reciprocate along the slide rail 111.

[0048] It should be noted that the first driving part 114 is any one of a cylinder, a servo motor and a steering engine.

[0049] In at least one embodiment, the auxiliary tooling further includes a controller, which is electrically connected to the first driving part 114 and the second driving part 121 and is used to control the operation of the first driving part 114 and the second driving part 121.

[0050] At least one embodiment further provides a battery infiltration system, including an electrolyte injection device (not shown in the figure), auxiliary tooling and a battery 200 to be infiltrated; the battery 200 to be infiltrated is placed in the auxiliary tooling; the electrolyte injection device is communicated with the liquid injection port of the battery 200 to be infiltrated; the auxiliary tooling is adapted to extrude two sides of the battery 200 to be infiltrated. By arranging two extrusion assemblies 110 to extrude two sides of the battery during the infiltration process, the flow rate of the electrolyte inside the battery is accelerated, thereby improving the infiltration speed of the battery. At the same time, through extrusion, the gas in the gas accumulation area can be emptied, improving the infiltration effect of the battery, avoiding side reactions or precipitation of metallic lithium during the subsequent use of the battery, and improving the battery life.

[0051] In summary, the present invention provides an auxiliary tooling and a battery infiltration system. Among them, the auxiliary tooling extrudes two sides of the battery during the infiltration process by arranging two extrusion assemblies 110, accelerating the flow rate of the electrolyte inside the battery, thereby improving the infiltration speed of the battery. At the same time, through extrusion, the gas in the gas accumulation area can be emptied, improving the infiltration effect of the battery, avoiding side reactions or precipitation of metallic lithium during the subsequent use of the battery, and improving the battery life.

[0052] Each device (components without specific structures described) selected in this application is a general standard component or a component known to those skilled in the art. Its structure and principle can be known by those skilled in the art through technical manuals or through conventional experimental methods. And, the software programs involved in this application are all prior arts, and this application does not involve any improvement to the software programs.

[0053] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0054] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some communication interfaces. The indirect coupling or communication connection of the devices or units may be in an electrical, mechanical, or other form.

[0056] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0057] In addition, the functional units in various embodiments of the present utility model can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

[0058] Inspired by the above-described ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An auxiliary tooling, characterized in that, Comprising: Two extrusion components; And A support component for supporting the extrusion components; The two extrusion components are arranged oppositely and are adapted to extrude two sides of the battery to be infiltrated.

2. The auxiliary tooling according to claim 1, wherein The extrusion component includes a slide rail and an extrusion roller; The extrusion roller is slidably connected to the slide rail and is in contact with the side surface of the battery to be infiltrated.

3. The auxiliary tooling according to claim 2, wherein A sliding groove is formed in the opposite surface of the slide rail and the battery to be infiltrated; The extrusion roller is slidably arranged in the sliding groove.

4. The auxiliary tooling according to claim 3, wherein The extrusion component further includes a connecting frame; The extrusion roller is rotatably connected to the connecting frame; The connecting frame is slidably connected in the sliding groove.

5. The auxiliary tooling according to claim 4, wherein Limiting grooves are formed at the top and bottom of the sliding groove; One side of the connecting frame away from the extrusion roller is snapped into the limiting groove.

6. The auxiliary tooling according to claim 5, wherein A bearing is rotatably arranged on the connecting frame; The connecting frame is rollingly connected in the limiting groove through the bearing.

7. The auxiliary tooling according to claim 2, wherein The extrusion component further includes a first driving part; The first driving part is fixedly arranged on the slide rail and is adapted to drive the extrusion roller to reciprocate along the slide rail.

8. The auxiliary tooling according to claim 7, wherein The first driving part is any one of a cylinder, a servo motor and a steering engine.

9. The auxiliary tooling according to claim 1, wherein The two extrusion components are slidably arranged on the support component and are adapted to move towards or away from each other under the drive of an external driving force.

10. A battery infiltration system, characterized in that, Including An electrolyte injection device, an auxiliary tooling and a battery to be infiltrated; The battery to be infiltrated is placed in the auxiliary tooling; The electrolyte injection device is communicated with the liquid injection port of the battery to be infiltrated; The auxiliary tooling is adapted to extrude two sides of the battery to be infiltrated.

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