Battery cell pressing assembly of soft package battery

Abstract

The utility model relates to the technical field of soft package battery processing, in particular to a battery cell pressing assembly of a soft package battery, which is provided with a pressing frame arranged at the top of a battery body and used for supporting, a pressing cylinder is arranged on the pressing frame, the pressing cylinder drives a moving plate, and the moving plate is connected with a pressing plate through an elastic piece so as to press and restrain the top of the battery body; detection assemblies are arranged on the two sides, corresponding to the tabs of the battery body, of the pressing and fixing plate so as to detect the bending state of the tabs; the detection assembly comprises a connecting plate arranged on the pressing and fixing plate, a detection frame is arranged at the end, facing the tabs, of the connecting plate, and a position finder distributed in the direction of the multiple tabs on one side of the battery body is arranged on the detection frame so as to detect whether the protruding amount of the bent tabs exceeds or not. The problem that in the prior art, the top of a soft package battery is lack of pressure constraint in the machining process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of soft-pack battery processing, and particularly relates to a core pressing and fixing assembly for a soft-pack battery. Background Art

[0002] In the current production and manufacturing field of soft-pack batteries, soft-pack batteries are increasingly widely used in the new energy field due to their advantages such as high energy density, light weight, and customizable shape. However, in the existing soft-pack battery processing, there are still obvious technical bottlenecks in the processing technology for battery tabs.

[0003] Currently, the top area of soft-pack batteries is mostly in an unconstrained free state during the processing flow. This unconstrained state exposes significant drawbacks in the tab bending process: when bending the tabs, due to the lack of an effective limiting structure at the top, the probability of the overall displacement of the soft-pack battery increases significantly. Once the battery is displaced during processing, it is not only difficult to ensure the position accuracy of the tab bending, but also may cause stress concentration at the connection part between the tab and the battery body, laying a hidden danger for the subsequent performance stability of the battery. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a core pressing and fixing assembly for a soft-pack battery to solve the problem of the lack of pressure constraint at the top during the processing of soft-pack batteries in the prior art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: A core pressing and fixing assembly for a soft-pack battery, which has a pressing and fixing frame arranged at the top of the battery body for support. A pressing cylinder is arranged on the pressing and fixing frame, and the pressing cylinder drives a moving plate. The moving plate is connected with a pressing plate through an elastic member to perform a top pressing and constraint on the top of the battery body;

[0006] Detection components are arranged on both sides of the pressing plate corresponding to the tabs of the battery body to detect the bending state of the tabs;

[0007] The detection component includes a connecting plate arranged on the pressing plate. A detection frame is arranged at the end of the connecting plate facing the tab. A position detector is arranged on the detection frame and distributed along the direction of multiple tabs on one side of the battery body to detect whether the protrusion amount of the tab after bending exceeds.

[0008] As a further optimization of the core pressing and fixing assembly for a soft-pack battery of the utility model: The detection frame is arranged in a U shape, and the concave part of the detection frame corresponds to multiple tabs on one side of the battery body to make the position detector correspond to multiple tabs on the corresponding side.

[0009] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: The position detector is composed of an infrared emitter and an infrared receiver, and the infrared emitter and the infrared receiver are respectively arranged at the two lower edges of the detection frame.

[0010] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: Two symmetrical sliding columns are fixedly arranged on the moving plate, and the sliding columns are in sliding fit with the sliding sleeves arranged on the pressing and fixing frame.

[0011] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: The elastic member includes a movable column arranged at the top corner of the moving plate, the end of the movable column is fixedly connected to the pressing and fixing plate, and a buffer spring is arranged around the movable column between the moving plate and the pressing and fixing plate.

[0012] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: The end of the movable column passing through the moving plate is in threaded connection with a screw cylinder, and a docking groove is arranged at the top of the screw cylinder.

[0013] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: The connecting plate and the pressing and fixing plate are connected together by screws.

[0014] As a further optimization of the core pressing and fixing component of a soft-pack battery of the present utility model: A plurality of through holes for the screws to pass through are formed in the connecting plate.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The present utility model uses the pressing and fixing frame as a support and installs it on the top of the battery body. At the same time, with the help of the pressing cylinder on the pressing and fixing frame, the moving plate is driven to perform vertical stable pressing to achieve the top positioning of the battery body, and then to assist in maintaining the high-quality bending of the tab to a certain extent. In addition, the constraint fixation of the battery body can be released, which is convenient for subsequent processing operations after the battery body passes through. Furthermore, not only the constraint pressure on the top of the battery body is increased, but also the relative position stability of the battery body during the tab bending process is improved, thereby improving the quality of the tab bending to a certain extent.

[0017] The present utility model accurately locates the position of the position detector by configuring a detection component including a detection frame, and then adjusts the distribution direction of multiple tabs on the corresponding side of the position detector. Subsequently, by means of whether the infrared rays of the position detector are blocked by the protruding tabs, the accurate detection of the tab bending quality is realized, thereby effectively improving the yield rate of the tab bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the use state of the present utility model;

[0019] Figure 2Schematic diagram of the structure of the present utility model in the to-be-operated state;

[0020] Markings in the figure: 1, pressing and fixing frame; 2, pressing and fixing cylinder; 3, sliding column; 4, sliding sleeve; 5, moving plate; 6, elastic member; 601, movable column; 602, buffer spring; 7, pressing and fixing plate; 8, detection assembly; 801, connecting plate; 802, detection frame; 803, position detector; 9, clamping tray; 10, battery body. Specific embodiments

[0021] In order to better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments, but the content of the present utility model is not limited to the following embodiments.

[0022] As Figure 1 and Figure 2 shown, a core pressing and fixing assembly for a soft-pack battery has a pressing and fixing frame 1 for support. The pressing and fixing frame 1 is arranged corresponding to the top of the battery body 10. A pressing and fixing cylinder 2 is fixedly arranged at the center of the pressing and fixing frame 1. A moving plate 5 is fixedly arranged at the telescopic end of the pressing and fixing cylinder 2. A pressing and fixing plate 7 is arranged on the side of the moving plate 5 facing the battery body 10. The pressing and fixing cylinder 2 can drive the moving plate 5 and the pressing and fixing plate 7 to press the battery body 10, so as to apply a pressure constraint to the top of the battery body 10 and further fix the battery body 10. This design aims to reduce the probability that the clamping tray 9 is displaced due to uneven force on the battery body 10 during the bending of the side ear of the battery body 10, and ensure the consistency and quality of the ear bending.

[0023] On one side of the moving plate 5 facing the pressing frame 1, two sliding columns 3 are symmetrically and fixedly arranged. The two sliding columns 3 are respectively in sliding fit with two sliding sleeves 4 arranged on the pressing frame 1 to maintain the stability of the vertical movement of the moving plate 5, ensuring the accuracy and stability of positioning the battery body 10. The moving plate 5 and the pressing plate 7 are connected by four elastic members 6. These four elastic members 6 are respectively arranged at the four corners of the moving plate 5 and the pressing plate 7, which can effectively disperse the pressure generated by the pressing cylinder 2 and reduce the probability of damaging the battery body 10 due to excessive top pressure of the pressing cylinder 2. The elastic member 6 includes a movable column 601 that is in sliding fit with the top corner of the moving plate 5. The end of the movable column 601 passing through the moving plate 5 is fixedly connected to the pressing plate 7, and a buffer spring 602 is sleeved outside the movable column 601. The setting of the buffer spring 602 can play a buffering role when the pressing plate 7 presses the battery body 10, making the pressing plate 7 approach the moving plate 5 to a certain extent, thereby further reducing the damage to the battery body 10 caused by excessive top pressure of the pressing cylinder 2. The end of the movable column 601 passing through the moving plate 5 is threadedly connected with a threaded cylinder, and a docking groove is provided at the end of the threaded cylinder, which is convenient for the operator to dock with the docking groove through a screwdriver to rotate the threaded cylinder to adjust the amount of the threaded cylinder covering the movable column 601, and then the hardness of the buffer spring 602 can be adjusted to a certain extent. During the long-term use of the buffer spring 602, if the buffer spring 602 loses part of its elastic amount, the hardness of the buffer spring 602 can be adjusted to ensure the top pressure on the pressing plate 7, that is, to ensure the stability of the pressing restraint on the battery body 10.

[0024] On both sides of the pressing plate 7 corresponding to the ears of the battery body 10 at the center, connecting plates 801 are provided. The connecting plates 801 are connected to the pressing plate 7 by screws, and a plurality of through holes for the screws to pass through are provided on the connection, which is convenient for the operator to adjust the position of the connecting plates 801 to adapt to the bending protrusion amount of the ears required for different requirements. On one side of the connecting plate 801 corresponding to the ears of the battery body 10, a detection frame 802 is fixedly provided. A position detector 803 is provided at the detection frame 802 corresponding to a plurality of ears on one side. The position detector 803 is divided into an infrared receiving end and an infrared transmitting end, and the two are arranged along the distribution direction of a plurality of ears on one side. During the process of ear bending and leveling, if the ears are uneven or not bent in place, the infrared rays emitted by the infrared transmitting end of the position detector 803 will not be received by the infrared receiving end. At this time, the position detector 803 will immediately give a feedback prompt so that the operator can find and adjust in time. The detection frame 802 is arranged in a U shape, and its concave part can completely cover the ears on the corresponding side of the battery body 10, ensuring that the infrared receiving end and the infrared transmitting end can accurately detect along the distribution direction of a plurality of ears on one side. The specific model of the position detector 803 and the prompting method are all commonly used model devices and technical means selected by those skilled in the art according to actual needs.

[0025] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present utility model.

Claims

1. A core pressing and fixing component for a soft-pack battery, characterized in that: It is provided with a pressing frame (1) for support at the top of the battery body (10). A pressing cylinder (2) is arranged on the pressing frame (1). The pressing cylinder (2) drives a moving plate (5). The moving plate (5) is connected with a pressing plate (7) through an elastic member (6) to perform a top-pressure constraint on the top of the battery body (10). Detection components (8) are arranged on both sides of the pressing plate (7) corresponding to the ears of the battery body (10) to detect the bending state of the ears. The detection component (8) includes a connecting plate (801) arranged on the pressing plate (7). A detection frame (802) is arranged at the end of the connecting plate (801) facing the ear. A position detector (803) distributed along the direction of multiple ears on one side of the battery body (10) is arranged on the detection frame (802) to detect whether the protrusion amount of the ear after bending exceeds the standard.

2. The core pressing and fixing assembly of a soft-pack battery according to claim 1, characterized in that: The detection frame (802) is arranged in a U shape. The concave part of the detection frame (802) corresponds to multiple ears on one side of the battery body (10) so that the position detector (803) corresponds to multiple ears on the corresponding side.

3. The core pressing and fixing assembly of a soft-pack battery according to claim 2, characterized in that: The position detector (803) is composed of an infrared emitter and an infrared receiver. The infrared emitter and the infrared receiver are respectively arranged at the two lower edges of the detection frame (802).

4. The core pressing component of a soft-pack battery according to claim 1, wherein: Two symmetric sliding columns (3) are fixedly arranged on the moving plate (5). The sliding columns (3) are in sliding fit with sliding sleeves (4) arranged on the pressing frame (1).

5. The core pressing and fixing assembly of a soft-pack battery according to claim 1, wherein: The elastic member (6) includes a movable column (601) arranged at the top corner of the moving plate (5). The end of the movable column (601) is fixedly connected with the pressing plate (7). A buffer spring (602) arranged between the moving plate (5) and the pressing plate (7) is wound around the movable column (601).

6. The core pressing and fixing assembly of a soft-pack battery according to claim 5, characterized in that: The end of the movable column (601) passing through the moving plate (5) is threadedly connected with a screw cylinder, and a docking groove is arranged at the top of the screw cylinder.

7. The core pressing and fixing assembly of a soft-pack battery according to claim 1, characterized in that: The connecting plate (801) and the pressing plate (7) are connected together by screws.

8. The core pressing and fixing assembly of a soft-pack battery according to claim 7, wherein: A plurality of through holes for the screws to pass through are formed in the connecting plate (801).

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