Tool for controlling thickness of lithium battery after liquid injection

Abstract

The utility model provides a tool for controlling the thickness of a lithium battery after liquid injection. The tool comprises a movable module, a fixed bottom plate, a fixed carrier, a battery clamping plate and a clamping driving part, the tool is matched with an automatic lithium battery liquid injection assembly line, after feeding is conducted through a battery feeding station, the electric lever drives the supporting table to move towards the second end, the preset pressure is kept, the battery between the battery clamping plates on the supporting table is clamped, and therefore the situation that the thickness exceeds the standard due to obvious expansion of the battery after liquid injection is limited, the thickness of the battery after liquid injection is effectively controlled, and the production efficiency is improved. Therefore, the processing quality of the lithium battery is improved; and in addition, through the arrangement of multiple pairs of battery clamping plates, multiple batteries can be clamped at the same time, and the operation efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing, in particular to a tool used for controlling the thickness of a lithium battery after liquid injection. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly active chemical properties of lithium metal, its processing, storage, and use place very high demands on the environment. With the development of science and technology, lithium batteries have become mainstream.

[0003] During the production of lithium batteries, electrolyte needs to be injected into the battery (cell). Traditional injection devices have a simple structure and cannot properly fix the lithium battery during the injection process, resulting in the lithium battery easily collapsing during the injection process, and it is impossible to fix multiple lithium batteries at the same time. The prior art discloses a liquid injection device for lithium battery production, comprising a support platform, a support vertical plate fixedly mounted on the top of the support platform, a top plate fixedly mounted on the top of the support vertical plate, a support leg fixedly mounted on the bottom of the support platform, and a clamping mechanism provided on the inner side of the support vertical plate; the clamping mechanism comprises a support frame, a bidirectional screw, a long clamping plate 1, and a long clamping plate 2; a bidirectional motor 1 fixedly mounted on the top of the support frame, and a worm fixedly mounted on the output end of the bidirectional motor 1; by providing the clamping mechanism, the long clamping plate 1 and the long clamping plate 2 can clamp the lithium battery placed on the placement cylinder, thereby improving the stability of the lithium battery during liquid injection and preventing the lithium battery from shaking and deflecting during liquid injection, which could lead to electrolyte leakage and environmental pollution. The mechanism can also simultaneously clamp multiple lithium batteries, thereby improving the clamping efficiency of the lithium batteries. However, the thickness of the lithium battery may change after liquid injection, resulting in substandard quality, and the liquid injection device in the prior art cannot effectively control the thickness. Utility Model Content

[0004] The purpose of the present invention is to address the deficiencies in the above-mentioned background technology and to provide a device capable of controlling the thickness of the lithium battery during the liquid injection process, so as to further improve the production quality of lithium batteries.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a tool for controlling the thickness of lithium batteries after liquid injection, comprising a movable module, a fixed base plate, a fixed carrier, a battery clamp and a clamping drive unit;

[0006] The fixed base plate is connected to the mobile module, and the fixed carrier is connected to the fixed base plate. A clamping plate groove and a guide rail are provided on the fixed carrier. A support platform is provided in the clamping plate groove, and the support platform is slidably connected to the guide rail through a slider. The clamping drive unit is provided on the fixed base plate or the fixed carrier, and the output end of the clamping drive unit is connected to the support platform. The battery clamp is provided on the support platform and is movably connected to the support platform. The battery is placed on the support platform and is located between two adjacent battery clamps. A push plate is provided at the first end of the support platform, and the second end of the support platform corresponds to the fixed plate provided on the fixed carrier.

[0007] Furthermore, a plurality of pairs of battery clamps are provided on the support platform to clamp a plurality of batteries at the same time.

[0008] Furthermore, a partition is provided on the support platform, and the partition is located between two adjacent pairs of battery clamps, and the partition is movably connected to the support platform.

[0009] Furthermore, a limiting groove is provided in the clamping plate groove, and the limiting block of the partition is inserted into the limiting groove to limit the moving range of the partition.

[0010] Furthermore, the battery clamp has various thickness specifications and is replaceable.

[0011] Furthermore, the clamping drive part is an electric rod.

[0012] Furthermore, two sides of the splint slot are provided with beam sensors, and the beam sensors are used to detect the battery at each battery injection position.

[0013] The above solution of the utility model has the following beneficial effects:

[0014] The tooling provided by the utility model is used to control the thickness of lithium batteries after liquid injection, and is adapted to the automatic liquid injection assembly line of lithium batteries. After the battery is loaded at the battery loading station, the electric rod drives the support platform to move toward the second end, maintaining a preset pressure, so that the battery between the battery clamps on the support platform is clamped, thereby limiting the obvious expansion of the battery after liquid injection, which may cause the thickness to exceed the standard, and effectively controlling the thickness of the battery after liquid injection, thereby improving the processing quality of the lithium battery; in addition, by providing multiple pairs of battery clamps, multiple batteries can be clamped at the same time, further improving the working efficiency;

[0015] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A.

[0018] [Description of Reference Numerals]

[0019] 1-Mobile module; 2-Fixed base plate; 3-Fixed carrier; 4-Battery clamp; 5-Battery; 6-Clamp slot; 7-Guide rail; 8-Support platform; 9-Push plate; 10-Fixed plate; 11-Partition; 12-Electric bar; 13-Radio sensor. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a locking connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a tool for controlling the thickness of a lithium battery after liquid injection, comprising a movable module 1, a fixed base plate 2, a fixed carrier 3, a battery clamp 4 and a clamping drive unit.

[0024] Among them, the fixed base plate 2 is connected to the mobile module 1, and the mobile module 1 is used to drive the fixed base plate 2 to move, so that the tooling can be moved to various stations, such as the battery loading station, the liquid injection station, etc. to load the battery 5 (battery cell) and inject the battery 5. The fixed carrier 3 is fixedly connected to the fixed base plate 2, and the fixed carrier 3 is provided with a clamping plate groove 6 and a guide rail 7, and the guide rail 7 and the clamping plate groove 6 are distributed in the same direction. A support platform 8 is provided in the clamping plate groove 6, and the support platform 8 is slidably connected to the guide rail 7 through a slider. The clamping drive unit is provided on the fixed base plate 2 or the fixed carrier 3, and the output end of the clamping drive unit is connected to the support platform 8 to drive the support platform 8 to move and support the battery 5 placed on the support platform 8. The battery clamp 4 is also provided on the support platform 8 and is movably connected to the support platform 8. When the battery 5 is placed, it is located between two adjacent battery clamps 4, and the battery 5 is clamped by the battery clamp 4.

[0025] It should be noted that a push plate 9 is provided at the first end of the support table 8, and the second end of the support table 8 corresponds to the fixed plate 10 provided on the fixed carrier 3, so the area between the push plate 9 and the fixed plate 10 serves as the area for the battery clamp 4 to clamp the battery. Since the thickness of the battery clamp 4 is constant, when the push plate 9 applies a thrust to the battery clamp 4, it can push the battery clamp 4 in the direction of the fixed plate 10, and clamp the battery 5 between the battery clamps 4 under the reaction force of the fixed plate 10, thereby controlling the thickness of the battery 5 and avoiding a significant change in the thickness of the battery 5 after injection. It is understandable that since the push plate 9 is fixedly connected to the support table 8, when the support table 8 moves under the drive of the clamping drive unit, it can drive the push plate 9 to move synchronously and transmit the driving force to the battery clamp 4.

[0026] As a preferred embodiment, in this embodiment, multiple pairs of battery clamps 4 are provided on the support platform 8 to simultaneously clamp and inject liquid into multiple batteries 5, thereby improving the efficiency of tooling operations. Among them, the thrust of the push plate 9 and the reaction force of the battery clamp 4 can be transmitted to each pair of battery clamps 4. As a further improvement, in this embodiment, a partition 11 is also provided on the support platform 8. The partition 11 is located between two adjacent pairs of battery clamps 4 to divide the area for injecting liquid into each battery 5, thereby avoiding the situation where all the battery clamps 4 are moved to the end of the support platform 8. It should be noted that the partition 11 is also movably connected to the support platform 8, and a limiting groove is provided on the side wall of the clamp groove 6. The limiting block of the partition 11 is inserted into the limiting groove, so that the moving range of the partition 11 is limited. Therefore, the partition 11 can limit the battery clamp 4 to a certain extent while ensuring the transmission of the clamping force.

[0027] As a preferred embodiment, the battery clamp 4 in this embodiment has a variety of thickness specifications, which can be replaced to adapt to batteries 5 with different thickness process requirements, further improving the applicability of the tooling.

[0028] As a preferred embodiment, the clamping drive portion in this embodiment adopts an electric rod 12, which can easily adjust the pressure to make the clamping force appropriate and ensure that the thickness of the battery 5 after injection meets the standard. Of course, in other embodiments, a cylinder or other form of drive can also be used.

[0029] As a preferred embodiment, in this embodiment, a through-beam sensor 13 is provided on both sides of the clamping plate groove 6. The through-beam sensor 13 is used to detect whether there is a battery 5 at each liquid injection position. When the tooling passes through the battery loading station, if batteries 5 are missing at some positions, the clamping force cannot be transmitted to batteries 5 at other positions. Therefore, the through-beam sensor 13 can detect the missing battery 5 and alarm, making it convenient for the operator to reinstall the battery 5 and inject liquid.

[0030] In short, the tooling provided in this embodiment is adapted to the automatic liquid injection assembly line for lithium batteries. After the battery is loaded at the battery loading station, the electric rod 12 drives the support table 8 to move toward the second end, maintaining the preset pressure, so that the battery 5 between the battery clamps 4 on the support table 8 is clamped, thereby limiting the obvious expansion of the battery 5 after liquid injection, which causes the thickness to exceed the standard, and effectively controls the thickness of the battery 5 after liquid injection, thereby improving the processing quality of the lithium battery.

[0031] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A tool for controlling the thickness of a lithium battery after injection, characterized in that: It includes a mobile module, a fixed base plate, a fixed carrier, a battery clamp and a clamping drive unit; The fixed base plate is connected to the mobile module, and the fixed carrier is connected to the fixed base plate. A clamping plate groove and a guide rail are provided on the fixed carrier. A support platform is provided in the clamping plate groove, and the support platform is slidably connected to the guide rail through a slider. The clamping drive unit is provided on the fixed base plate or the fixed carrier, and the output end of the clamping drive unit is connected to the support platform. The battery clamp is provided on the support platform and is movably connected to the support platform. The battery is placed on the support platform and is located between two adjacent battery clamps. A push plate is provided at the first end of the support platform, and the second end of the support platform corresponds to the fixed plate provided on the fixed carrier.

2. The tool for controlling the thickness of a lithium battery after liquid injection according to claim 1, characterized in that: The support platform is provided with a plurality of pairs of battery clamps for clamping a plurality of batteries at the same time.

3. The tooling for controlling the thickness of a lithium battery after liquid injection according to claim 2, characterized in that: The support platform is further provided with a partition, which is located between two adjacent pairs of battery clamps and is movably connected to the support platform.

4. The tool for controlling the thickness of a lithium battery after liquid injection according to claim 3, characterized in that: A limiting groove is provided in the clamping plate groove, and the limiting block of the partition is inserted into the limiting groove to limit the moving range of the partition.

5. The tool for controlling the thickness of a lithium battery after liquid injection according to claim 1, characterized in that: The battery clamps have various thickness specifications and are replaceable.

6. The tool for controlling the thickness of a lithium battery after liquid injection according to claim 1, characterized in that: The clamping drive part is an electric rod.

7. The tool for controlling the thickness of a lithium battery after liquid injection according to claim 1, characterized in that: Both sides of the splint slot are provided with beam sensors, which are used to detect the battery at each liquid injection position.

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