Battery cell heating and pre-shaping device

Abstract

The utility model discloses a battery cell heating and pre-shaping device, which comprises a frame body provided with a support plate; the shaping assembly is arranged on the supporting plate, the shaping assembly comprises a first pressing part and a second pressing part, the first pressing part and the second pressing part can be close to each other to pre-press the two sides of a battery cell, heating pieces are arranged in the first pressing part and the second pressing part, and the heating pieces are used for heating the two sides of the battery cell. And the first pressing part and the second pressing part can be used for heating the battery cell. The battery cell can be heated and pre-pressed at the same time, and the production efficiency of the battery cell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to a pre-shaping device for heating a battery cell. Background Art

[0002] In the production process of lithium batteries, the wound battery cells often present a fluffy elliptical shape. The viscosity of the battery cell separator can only be reflected after reaching a certain temperature. Therefore, it is necessary to perform hot pressing and shaping on the wound battery cells.

[0003] In related technologies, for hot pressing and shaping, a preheating furnace is usually used to first heat the battery cell to a specified temperature, and then a hot press is used to apply pressure to the battery cell for shaping. However, in the method of heating the battery cell using a preheating furnace, the preheating furnace uses a heating film to heat the battery cell. The battery cell needs to be preheated in the preheating furnace for a long time to reach the temperature required for cold pressing. The temperature rise of the battery cell is slow, the preheating time is long, the temperature difference between the surface layer and the core of the battery cell is large, and the subsequent hot pressing and shaping time of the battery cell is long without pre-shaping, resulting in low production efficiency of the battery cell and difficult to guarantee the quality of the battery cell. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a pre-shaping device for heating a battery cell, which can heat and pre-press the battery cell simultaneously, improving the production efficiency of the battery cell.

[0005] A pre-shaping device for heating a battery cell according to an embodiment of the utility model includes: a frame body provided with a support plate; a shaping assembly disposed on the support plate, the shaping assembly including a first pressing portion and a second pressing portion, the first pressing portion and the second pressing portion being capable of approaching each other to pre-press both sides of the battery cell, and heating elements being provided in both the first pressing portion and the second pressing portion so that the first pressing portion and the second pressing portion can heat the battery cell.

[0006] A pre-shaping device for heating a battery cell according to an embodiment of the utility model has at least the following beneficial effects: when it is necessary to pre-press the battery cell, the first pressing portion and the second pressing portion approach each other to pre-press both sides of the battery cell, and at the same time, the heating elements in the first pressing portion and the second pressing portion heat both sides of the battery cell, thereby realizing heating and pre-pressing of the battery cell simultaneously, making the pre-shaping time short and improving the production efficiency of the battery cell.

[0007] According to some embodiments of the utility model, the first pressing portion is disposed on the frame body in a liftable manner, and the second pressing portion is fixedly disposed on the support plate.

[0008] According to some embodiments of the utility model, the pre-shaping device for heating a battery cell includes a lifting assembly for driving the first pressing portion to lift.

[0009] According to some embodiments of the present utility model, the lifting assembly includes a guide rail, a sliding frame, and a driving member. The guide rail is arranged along the height direction of the frame body. The sliding frame is arranged along the height direction of the frame body. The sliding frame is in sliding fit with the guide rail. The first pressing portion is fixedly connected to the sliding frame, and the driving member can drive the sliding frame to slide on the guide rail.

[0010] According to some embodiments of the present utility model, the driving member includes an electric cylinder. The cylinder body of the electric cylinder is fixedly arranged at the top of the frame body, and the telescopic shaft of the electric cylinder is fixedly connected to the top of the sliding frame.

[0011] According to some embodiments of the present utility model, a limiting block is fixedly sleeved on the guide rail. A screw hole is formed through the top of the limiting block, and a limiting screw is threadedly connected in the screw hole. The limiting screw is located below the sliding frame to limit the stroke range of the sliding frame.

[0012] According to some embodiments of the present utility model, the number of the shaping assemblies is multiple, and the multiple shaping assemblies are spaced apart along the height direction of the frame body.

[0013] According to some embodiments of the present utility model, the multiple first pressing portions are all fixedly connected to the sliding frame and are spaced apart along the length direction of the sliding frame.

[0014] According to some embodiments of the present utility model, the first pressing portion is provided with a first pressing surface for abutting against one side of the battery cell, the second pressing portion is provided with a second pressing surface for abutting against the other side of the battery cell, and a temperature measuring plate is arranged on the second pressing surface.

[0015] According to some embodiments of the present utility model, a pressure sensor is arranged at the bottom of the second pressing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0017] Figure 2 is Figure 1 the enlarged view of part A in

[0018] Figure 3 the front view schematic diagram of the overall structure of the embodiment of the present application.

[0019] Description of the reference numerals: 100, frame; 110, support plate; 200, shaping component; 210, first pressing part; 211, first pressing surface; 220, second pressing part; 221, second pressing surface; 310, guide rail; 320, sliding frame; 331, electric cylinder; 400, limit block; 500, limit screw; 600, pressure sensor; 700, temperature measuring plate; 800, battery cell. Detailed implementation manners

[0020] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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, and thus should not be construed as a limitation to the present invention.

[0022] In the description of the present invention, if the first and the second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0024] The following will further describe the present application in detail with reference to the attached Figures 1-3 drawings.

[0025] A battery cell heating and pre-shaping device proposed in the embodiment of the present invention, referring to Figure 1 the drawings, includes: a frame 100 and a shaping component 200. The shaping component 200 is carried on the frame 100, and the shaping component 200 is used to heat and pre-press the battery cell 800.

[0026] It can be understood that, in some embodiments of the present invention, referring to Figure 1, a plurality of support plates 110 are provided on the frame body 100, and the plurality of support plates 110 are arranged at intervals in the height direction of the frame body 100. The number of the shaping assemblies 200 is multiple, and the multiple shaping assemblies 200 are respectively fixedly arranged on the multiple support plates 110 one by one, so that the battery cell heating and pre-shaping device can pre-shape multiple battery cells 800 simultaneously, thereby improving the production efficiency of the battery cells 800.

[0027] It can be understood that in some embodiments of the present invention, referring to Figure 1 , the shaping assembly 200 includes a first pressing portion 210 and a second pressing portion 220. The first pressing portion 210 is arranged on the frame body 100 in a liftable manner, and the second pressing portion 220 is fixedly arranged on the support plate 110. When the battery cell 800 is placed between the first pressing portion 210 and the second pressing portion 220, the first pressing portion 210 and the second pressing portion 220 can approach each other to pre-press both sides of the battery cell 800.

[0028] It can be understood that in some embodiments of the present invention, referring to Figure 1 , the battery cell heating and pre-shaping device includes a lifting assembly, and the lifting assembly is used to drive the first pressing portion 210 to lift relative to the second pressing portion 220, so as to pre-press the battery cell 800.

[0029] It can be understood that in some embodiments of the present invention, referring to Figure 1 , the lifting assembly includes a guide rail 310, a sliding frame 320 and a driving member. The guide rail 310 is fixedly arranged on the frame body 100 and is arranged in the height direction of the frame body 100. The sliding frame 320 is arranged in the height direction of the frame body 100. The sliding frame ********** 320 is slidably matched with the guide rail 310. The first pressing portion 210 is fixedly connected to the sliding frame 320. The driving member can drive the sliding frame 320 to slide on the guide rail 310. Thus, when it is necessary to pre-press the battery cell 800, the driving member is used to drive the sliding frame 320 to slide on the guide rail 310, so as to drive the first pressing portion 210 to descend, so that the first pressing portion 210 and the second pressing portion 220 approach each other and respectively abut against both sides of the battery cell 800, thereby applying pressure to the battery cell 800 to achieve pre-pressing of the battery cell 800.

[0030] It can be understood that in some embodiments of the present invention, referring to Figure 1 It should be noted that there seems to be some incomplete or unclear parts in the original text (such as "**********" in the middle of line 15), which may affect the accuracy of the translation. If possible, it is recommended to check and correct the original text for a more accurate translation., The driving member includes an electric cylinder 331. The cylinder body of the electric cylinder 331 is fixedly arranged on the top of the frame 100, and the telescopic shaft of the electric cylinder 331 is fixedly connected to the top of the sliding frame 320. When it is necessary to pre-press the battery cell 800, the telescopic shaft of the electric cylinder 331 extends and retracts to drive the sliding frame 320 to slide on the guide rail 310, thereby driving the first pressing part 210 to descend, so that the first pressing part 210 and the second pressing part 220 approach each other and respectively abut against both sides of the battery cell 800, thereby applying pressure to the battery cell 800 to achieve pre-pressing of the battery cell 800.

[0031] In this embodiment, referring to Figure 1 , a plurality of first pressing parts 210 are all fixedly connected to the sliding frame 320 and are spaced apart along the length direction of the sliding frame 320, so that the electric cylinder 331 drives the sliding frame 320 to slide on the guide rail 310, and the sliding frame 320 can drive a plurality of first pressing parts 210 to descend simultaneously, thereby pre-pressing a plurality of battery cells 800 simultaneously, thus improving the production efficiency of the battery cells 800.

[0032] It can be understood that in some embodiments of the present invention, heating elements are provided in both the first pressing part 210 and the second pressing part 220. While the first pressing part 210 and the second pressing part 220 pre-press the battery cell 800, the heating elements can heat the upper and lower sides of the battery cell 800, thereby realizing pre-pressing the battery cell 800 while heating the battery cell 800, making the pre-shaping time short and improving the production efficiency of the battery cells 800.

[0033] It should be noted that in this embodiment, the heating element is a heating coil provided in the first pressing part 210 and the second pressing part 220. The heating coils in the first pressing part 210 and the second pressing part 220 can generate an alternating magnetic field heating state, thereby heating the battery cell 800 placed between the first pressing part 210 and the second pressing part 220. In some other embodiments, the heating element can also be a heating plate or infrared heating, etc.

[0034] It can be understood that in some embodiments of the present invention, referring to Figure 1 and Figure 2The cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320, and the cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320. The cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320. The cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320. The cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320. The cam 320 of the embodiment of the present invention is a kind of fixed device for the electric vehicle 320.

[0035] It is understood that in some embodiments of the present invention, reference Figure 1 and Figure 3 The first pressing portion 210 is provided with a first pressing surface 211 for abutting one side of the battery cell 800, and the second pressing portion 220 is provided with a second pressing surface 221 for abutting the other side of the battery cell 800. The first pressing portion 210 is lowered so that the first pressing portion 210 and the second pressing portion 220 are close to each other, so that the first pressing surface 211 abuts one side of the battery cell 800 and the second pressing surface 221 abuts the other side of the battery cell 800, thereby achieving pre-pressing of the battery cell 800.

[0036] It is understood that in some embodiments of the present invention, reference Figure 1 and Figure 3 A pressure sensor 600 is provided at the bottom of the second pressing part 220. When the first pressing part 210 and the second pressing part 220 pre-press the battery cell 800, the pre-pressing pressure is sensed by the pressure sensor 600, and the sensing signal is fed back to the controller. The controller controls the start or stop of the electric cylinder 331, so that the pressure required for shaping the battery cell 800 can be fed back through the pressure sensor 600, thereby making the pre-pressing effect better.

[0037] It is understood that in some embodiments of the present invention, reference Figure 1 and Figure 3 The second pressing surface 221 is provided with a temperature measuring plate 700, which is used to measure the temperature of the battery cell 800 to reduce the situation where the pre-shaping effect is poor due to insufficient or overheating of the battery cell 800.

[0038] The implementation principle of the embodiment of this application is as follows: When it is necessary to pre-press the battery cell 800, the telescopic shaft of the electric cylinder 331 expands and contracts to drive the sliding frame 320 to slide on the guide rail 310, thereby driving the first pressing part 210 to descend, so that the first pressing part 210 and the second pressing part 220 approach each other and respectively abut against both sides of the battery cell 800, thereby applying pressure to the battery cell 800 to achieve pre-pressing of the battery cell 800.

[0039] When it is necessary to heat the battery cell 800, the heating coils in the first pressing part 210 and the second pressing part 220 can generate an alternating magnetic field heating state, thereby heating the battery cell 800 placed between the first pressing part 210 and the second pressing part 220, thus realizing heating of the battery cell 800 while pre-pressing the battery cell 800, making the pre-shaping time short and improving the production efficiency of the battery cell 800.

[0040] The above are all the preferred embodiments of this application. It does not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A pre-shaping device for heating an electric cell, characterized in that, Comprising: A frame body (100) provided with a support plate (110); A shaping component (200) disposed on the support plate (110), the shaping component (200) includes a first pressing portion (210) and a second pressing portion (220), the first pressing portion (210) and the second pressing portion (220) can approach each other to pre-press both sides of the battery cell (800), and heating elements are provided in both the first pressing portion (210) and the second pressing portion (220) so that the first pressing portion (210) and the second pressing portion (220) can heat the battery cell (800).

2. The core heating and pre-shaping device according to claim 1, characterized in that: The first pressing portion (210) is disposed on the frame body (100) in a liftable manner, and the second pressing portion (220) is fixedly arranged on the support plate (110).

3. The cell heating and pre-shaping device according to claim 2, characterized in that: The battery cell heating and pre-shaping device includes a lifting assembly for driving the first pressing portion (210) to lift.

4. The cell heating and pre-shaping device according to claim 3, characterized in that: The lifting assembly includes a guide rail (310), a sliding frame (320) and a driving member. The guide rail (310) is arranged along the height direction of the frame body (100), the sliding frame (320) is arranged along the height direction of the frame body (100), the sliding frame (320) is in sliding fit with the guide rail (310), the first pressing portion (210) is fixedly connected to the sliding frame (320), and the driving member can drive the sliding frame (320) to slide on the guide rail (310).

5. The pre-shaping device for heating the battery cell according to claim 4, wherein: The driving member includes an electric cylinder (331), the cylinder body of the electric cylinder (331) is fixedly arranged on the top of the frame body (100), and the telescopic shaft of the electric cylinder (331) is fixedly connected to the top of the sliding frame (320).

6. The pre-shaping device for heating the battery cell according to claim 4, wherein: A limiting block (400) is fixedly sleeved on the guide rail (310), a threaded hole is formed through the top of the limiting block (400), and a limiting screw (500) is threadedly connected in the threaded hole. The limiting screw (500) is located below the sliding frame (320) to limit the stroke range of the sliding frame (320).

7. The pre-shaping device for heating the battery cell according to claim 4, wherein: The number of the shaping components (200) is multiple, and the multiple shaping components (200) are spaced apart along the height direction of the frame body (100).

8. The pre-shaping device for heating the battery cell according to claim 7, wherein: The multiple first pressing portions (210) are all fixedly connected to the sliding frame (320) and are spaced apart along the length direction of the sliding frame (320).

9. The pre-shaping device for heating an electric cell according to claim 1, wherein: The first pressing portion (210) is provided with a first pressing surface (211) for abutting against one side of the battery cell (800), the second pressing portion (220) is provided with a second pressing surface (221) for abutting against the other side of the battery cell (800), and a temperature measuring plate (700) is provided on the second pressing surface (221).

10. The cell heating and pre-shaping device according to claim 1, wherein: A pressure sensor (600) is provided at the bottom of the second pressing portion (220).

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