All-solid-state soft package battery assembly equipment

Abstract

The utility model relates to all-solid-state soft package battery assembling equipment which comprises a square fixing frame and at least two limiting pieces, the at least two limiting pieces are each of a U-shaped structure, and U-shaped openings in the at least two limiting pieces have different widths. The outer edges of the at least two limiting pieces can be attached to the inner edge of the square fixing frame. According to the utility model, the square fixing frame is arranged, the square area in the square fixing frame is used for lamination work, and the limiting piece is selected according to the size of the pole piece, so that the edge of the pole piece can be attached to the inner edge of the limiting piece when the pole piece is laminated in the square fixing frame, thereby achieving the purpose of dislocation prevention, improving the alignment degree of the pole piece and greatly improving the success rate of battery cell assembly; and meanwhile, the consistency of the battery cells can be improved, and the subsequent multi-layer stacking requirement of the battery cells is met. According to the utility model, at least two limiting pieces are arranged, the limiting pieces can be customized in a diversified manner, different assembly process requirements are met, and only the limiting pieces need to be replaced when the models of the laminations are changed subsequently.

Description

Technical Field

[0001] The utility model relates to the technical field of all-solid-state soft-pack battery stacks, and in particular to an all-solid-state soft-pack battery assembly device. Background Art

[0002] Solid-state lithium batteries are a type of battery technology that uses solid electrolytes to replace the liquid electrolytes in traditional lithium-ion batteries. Solid electrolytes transfer lithium ions between the positive and negative electrodes and the separator, playing a role in converting and storing electrochemical energy and chemical energy. Compared with traditional liquid electrolytes, solid electrolytes have the advantages of high energy density, good safety, fast charging, and long cycle life. Among them, sulfide all-solid-state batteries use solid electrolytes as the insulating positive and negative electrode materials. To meet the energy density requirements, the electrolyte membrane is designed to be as thin as possible. However, the thinner the electrolyte membrane, the more likely it is to short-circuit, and the higher the requirements for the assembly process of the battery cell, the higher the assembly requirements. Edge misalignment can also easily lead to short-circuiting of the battery cell.

[0003] Currently, stacking is done manually in a glove box. A single soft-pack is assembled into a double-sided negative electrode and stacked with two single-sided positive electrodes. When the upper and lower positive electrode stacks are misaligned, a short circuit is very likely to occur during the isostatic pressing process, and subsequent multi-layer stacking has higher requirements for edge alignment. The single-piece positive electrode is prone to curling after transfer, and the curling of the electrode has a great impact on the electrode positioning, which is easy to cause the electrode to shift when the battery cell is packaged with aluminum-plastic film. Manual stacking alignment requires precise manual control, and long-term operation of the electrode can easily cause the electrode edge to fall off. Utility Model Content

[0004] Based on this, in order to solve the technical problems existing in the current all-solid-state battery stacking, the utility model provides an all-solid-state soft-pack battery assembly device.

[0005] The utility model provides an all-solid-state soft-pack battery assembly device, which includes a square fixing frame and at least two limiting members, at least two of the limiting members are both U-shaped structures and the U-shaped openings inside at least two of the limiting members have different widths, and the outer edges of at least two of the limiting members can be fitted with the inner edges of the square fixing frame.

[0006] This utility model provides a square fixing frame with a square area inside for lamination. Limiting members are selected based on the size of the electrode pieces to ensure that when laminating the electrodes within the square fixing frame, the electrode edges can fit within the inner edges of the limiting members, thereby achieving the purpose of misalignment, improving electrode alignment, and achieving high adaptability, greatly improving the success rate of battery cell assembly. It can also improve battery cell consistency and meet subsequent multi-layer stacking requirements. The utility model provides at least two limiting members, which can be customized in a variety of ways to meet the needs of different assembly processes. Subsequent changes to the lamination model can be made by simply replacing the limiting members.

[0007] As a further improvement of the above solution of the present invention, the limiting component includes three limiting blocks, and the three limiting blocks are arranged in sequence to form a U-shaped structure.

[0008] As a further improvement of the above solution of the present invention, the three limiting blocks of each limiting member have the same width.

[0009] As a further improvement of the above solution of the present invention, it also includes a steel plate and a plurality of magnetic parts. The square fixing frame is set on the steel plate and the magnetic parts can be magnetically attracted to the steel plate.

[0010] As a further improvement of the above solution of the present invention, each of the magnetic parts includes a plurality of magnetic buckles.

[0011] As a further improvement of the above solution of the present invention, the number of the magnetic elements is two.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This utility model provides a square fixing frame with a square area inside for lamination. Limiting members are selected based on the size of the electrode pieces to ensure that when laminating the electrodes within the square fixing frame, the electrode edges can fit within the inner edges of the limiting members, thereby achieving the purpose of misalignment, improving electrode alignment, and achieving high adaptability, greatly improving the success rate of battery cell assembly. It can also improve battery cell consistency and meet subsequent multi-layer stacking requirements. The utility model provides at least two limiting members, which can be customized in a variety of ways to meet the needs of different assembly processes. Subsequent changes to the lamination model can be made by simply replacing the limiting members.

[0014] During the assembly of all-solid-state battery cells, the utility model can align the positive and negative electrode sheets relatively quickly and accurately, complete the stacking step, reduce edge dropout, and ensure the consistency of the battery cells, making it convenient for subsequent multi-layer stacking of battery cells; using magnetic suction parts for stacking can reduce the displacement of electrode sheets during the packaging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an all-solid-state soft-pack battery assembly device proposed in an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 Working principle diagram.

[0017] Figure numerals: 1. square fixing frame; 2. limit block; 3. steel plate; 4. magnetic buckle; 5. positive pole piece; 6. negative pole piece. DETAILED DESCRIPTION

[0018] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below in conjunction with specific embodiments. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0020] Refer to Figure 1 , this embodiment proposes a fully solid-state soft-pack battery assembly device, which includes a square fixed frame 1 and a plurality of limiting members, and may also include a steel plate 3 and two magnetic attraction members.

[0021] The steel plate 3 is directly placed on the workbench surface. The shape of the steel plate 3 is not specifically limited. In this embodiment, the steel plate 3 preferably uses a square-structured steel plate 3, and the area of the steel plate 3 needs to ensure that the laminating work can be carried out. A layer of aluminum-plastic film can be laid on the steel plate 3 before laminating to facilitate the soft-pack encapsulation after laminating.

[0022] The square fixed frame 1 is placed on the steel plate 3, and the square area inside the square fixed frame 1 is used for laminating work. To facilitate the laminating work, the length and width of the square fixed frame 1 are both smaller than the length and width of the steel plate 3.

[0023] A plurality of limiting members are all in a U-shaped structure, and the U-shaped openings inside the plurality of limiting members have different widths to match different sizes of pole pieces. When each limiting member is placed inside the square fixed frame 1, the outer edges of each limiting member can all fit with the inner edge of the fixed frame 1. Select a suitable limiting member according to the size of the pole piece to ensure that when laminating, the edge of the pole piece can fit with the inner edge of the limiting member, thereby facilitating the edge alignment during laminating. In this embodiment, for the convenience of laminating, the limiting member includes three long-strip-shaped limiting blocks 2, and the three limiting blocks 2 are arranged in sequence to form a U-shaped structure. The three limiting blocks 2 of the same limiting member have the same width, while the limiting blocks 2 of different limiting members have different widths, so that the U-shaped openings inside different limiting members have different widths. The material of the limiting member is not specifically limited. In this embodiment, the limiting member preferably uses an acrylic / polytetrafluoroethylene material.

[0024] Both of the two magnetic attraction members can be magnetically attracted to the steel plate 3. The two magnetic attraction members are respectively used to fix the positive pole piece 5 and the negative pole piece 6 on the steel plate 3 during laminating, and the magnetic attraction members can be conveniently removed after laminating. In this embodiment, each magnetic attraction member includes a plurality of magnetic attraction buckles 4.

[0025] Through the above structure setting, combined with Figure 1 、 Figure 2 , in the embodiment of the present invention, an all-solid-state soft-pack battery assembly device is used for lamination:

[0026] First, place the steel plate 3 on the work surface, lay a layer of aluminum-plastic film on the surface of the steel plate 3, and then place the square fixing frame 1 on the steel plate 3;

[0027] Select a suitable size of limiter according to the size of the positive electrode sheet 5 and place the limiter in the square fixing frame 1, ensuring that the outer edges of each limiter block 2 of the limiter are in contact with the inner edges of the square fixing frame 1;

[0028] Then place the positive electrode plate 5 into the limiting member. Figure 1 As shown, the three sides of the positive pole piece 5 are respectively fitted with the inner edges of the three limiting blocks 2; a plurality of magnetic buckles 4 of a magnetic component are placed at the four corners of the positive pole piece 5, and the magnetic buckles 4 are attracted to the steel plate 3 to fix the positive pole piece 5, and then the limiting component is removed;

[0029] Then, select a suitable size of limiter according to the size of the negative electrode plate 6 and place the limiter in the square fixing frame 1. At this time, the limiter may partially press the positive electrode plate 5.

[0030] Then place the negative electrode plate 6 into the limiting member. Figure 2 As shown, the three sides of the negative pole piece 6 are respectively fitted with the inner edges of the three limiting blocks 2 of the limiting member; a plurality of magnetic buckles 4 of a magnetic member are placed on the negative pole piece 6, and the magnetic buckles 4 are attracted to the steel plate 3 to fix the negative pole piece 6, and then the limiting member and the magnetic buckles 4 used to fix the positive pole piece 5 are removed;

[0031] Repeat the above steps to achieve multi-layer stacking and complete the assembly of the all-solid-state soft-pack battery.

[0032] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0035] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An all-solid-state soft pack battery assembly device, characterized in that: It comprises a square fixing frame (1) and at least two limiting members, at least two of the limiting members are U-shaped structures, and the U-shaped openings inside the at least two limiting members have different widths, and the outer edges of the at least two limiting members can fit with the inner edges of the square fixing frame (1).

2. The all-solid-state soft-pack battery assembly equipment according to claim 1, characterized in that: The limiting component comprises three limiting blocks (2), and the three limiting blocks (2) are arranged in sequence to form a U-shaped structure.

3. The all-solid-state soft-pack battery assembly equipment according to claim 2, characterized in that: The three limiting blocks (2) of each limiting member have the same width.

4. The all-solid-state soft-pack battery assembly equipment according to claim 1, characterized in that: It also includes a steel plate (3) and a plurality of magnetic attracting parts. The square fixing frame (1) is arranged on the steel plate (3) and the magnetic attracting parts can be magnetically attracted to the steel plate (3).

5. The all-solid-state soft-pack battery assembly equipment according to claim 4, characterized in that: Each of the magnetic attraction components comprises a plurality of magnetic attraction buckles (4).

6. The all-solid-state soft-pack battery assembly equipment according to claim 5, characterized in that: The number of the magnetic elements is two.

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