All-solid-state soft package battery lamination auxiliary mold

Abstract

The utility model discloses an all-solid-state soft package battery lamination auxiliary die, which belongs to the technical field of battery processing equipment and comprises a material platform body, the material platform body is of a rectangular frame structure with an open top, one end of the material platform body in the length direction is provided with a positive pole lug positioning groove and a negative pole lug positioning groove, and the other end of the material platform body is provided with a pole piece material returning groove. The two sides of the material table body in the width direction are each provided with a side glue groove. The lamination auxiliary mold can effectively prevent the situation that the alignment degree is reduced due to pole piece displacement in the lamination process, so that micro short circuit and hard short circuit of the battery are caused, or the performance of the battery is not ideal, and the preparation efficiency and yield of the all-solid-state soft package battery can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery processing equipment, and in particular relates to an auxiliary die for all-solid-state soft-pack battery stacks. Background Art

[0002] All-solid-state batteries have both high energy density and safety, and can fill the performance shortcomings of liquid battery systems. They are considered to be the next generation of revolutionary battery technology and have become a technological strategic high ground that the world is vying to conquer. However, the development of all-solid-state batteries urgently needs to carry out research on key manufacturing technologies for all-solid-state batteries. Among them, soft-pack batteries are the carrier form of all-solid-state batteries. At this stage, the preparation technology of all-solid-state soft-pack batteries determines many factors such as battery performance, yield, and efficiency. All-solid-state soft-pack batteries do not use diaphragms, and the positive and negative electrodes will produce dislocations under ultra-high isostatic pressure, which will cause micro-short circuits or direct short circuits in the battery. At this stage, manual stacking has serious problems such as low alignment and low efficiency. Utility Model Content

[0003] The purpose of the embodiment of the present utility model is to provide an all-solid-state soft-pack battery stacking auxiliary mold, which has a simple structure and is easy to use, and can better improve the above-mentioned problems.

[0004] The embodiment of the present utility model is achieved as follows:

[0005] An embodiment of the present utility model provides an auxiliary mold for all-solid-state soft-pack battery stacking, including a material platform body, which is a rectangular frame structure with an open top, one end of the material platform body in the length direction is provided with a positive electrode tab positioning groove and a negative electrode tab positioning groove, and the other end is provided with a pole piece withdrawal groove, and a side glue groove is provided on both sides of the material platform body in the width direction.

[0006] Furthermore, the positive electrode tab positioning groove and the negative electrode tab positioning groove pass through the side wall of the material platform body.

[0007] Furthermore, the electrode stripping groove passes through the side wall and bottom of the material platform body.

[0008] Furthermore, the side glue groove runs through the side wall and bottom of the material platform body.

[0009] Furthermore, a through hole is provided at the bottom of the material platform body near the middle position.

[0010] Furthermore, the material platform body is made of polytetrafluoroethylene plate, organic glass plate or stainless steel plate.

[0011] The beneficial effects of the utility model are:

[0012] The auxiliary mold for stacking all-solid-state soft-pack batteries provided by the embodiment of the present invention has a simple structure and is easy to use. The negative electrode tab is positioned and fixed by the main body groove and the negative electrode tab groove. The positive electrode tab groove positions the positive electrode tab in the left and right directions. The positive electrode tab length can be used to position the tab in the upper direction to ensure alignment. The mold can ensure alignment during alternating stacking and improve work efficiency. The mold is provided with a side glue port to facilitate the fixation of the side tabs of the battery cell. The mold facilitates the welding of the tabs of the battery cell and avoids the misalignment of the tabs during the welding process. The mold can effectively improve the production speed and yield of all-solid-state battery cells, and is also beneficial to the performance of all-solid-state batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of the structure of the auxiliary mold for the all-solid-state soft-pack battery stack provided in an embodiment of the present utility model;

[0015] In the figure: 1-material platform body; 2-positive electrode tab positioning groove; 3-negative electrode tab positioning groove; 4-electrode sheet withdrawal groove; 5-side glue groove; 6-through hole. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0019] refer to Figure 1 As shown, an embodiment of the present invention provides an all-solid-state soft-pack battery stack auxiliary mold, including a material platform body 1.

[0020] The material platform body 1 is a rectangular frame structure with an open top. A positive electrode tab positioning groove 2 and a negative electrode tab positioning groove 3 are provided at one end of the material platform body 1 in the length direction. The positive electrode tab positioning groove 2 and the negative electrode tab positioning groove 3 are spaced apart, and the positive electrode tab positioning groove 2 and the negative electrode tab positioning groove 3 only pass through the side wall of the material platform body 1. A pole piece withdrawal groove 4 is provided at the other end of the material platform body 1 in the length direction. The pole piece withdrawal groove 4 passes through the side wall and bottom of the material platform body 1 and forms a U-shaped notch at the bottom. The pole piece withdrawal groove 4 is located on the center line of the material platform body 1. A side glue groove 5 is provided on both sides of the material platform body 1 in the width direction. The side glue groove 5 passes through the side wall and bottom of the material platform body 1 and forms a U-shaped notch at the bottom. A through hole 6 is also provided at the bottom of the material platform body 1 near the middle position.

[0021] The material platform body 1 can be made of materials such as polytetrafluoroethylene plate, organic glass plate, stainless steel plate, etc.

[0022] The usage of this utility model is as follows:

[0023] 1. First, place the negative electrode sheet, and position and fix the target negative electrode sheet through the material platform body 1 and the negative electrode tab positioning groove 3.

[0024] 2. Then place the positive electrode sheet, and position the positive electrode sheet in the left and right directions through the positive electrode tab positioning groove 2, and ensure the alignment of the positive electrode sheet in the vertical direction through the length of the tab.

[0025] 3. Alternately stack the negative and positive electrodes.

[0026] 4. After the lamination is completed, the battery cell is glued with side glue through the side glue groove 5 and the electrode stripping groove 4.

[0027] 5. After the side glue is applied, the positive and negative pole tabs are welded under the fixation of the mold.

[0028] 6. After the tabs are welded, the battery cell is fixed and grabbed through the pole piece withdrawal trough 4, and the top and side seams of the soft-pack battery, final sealing, and isostatic pressing are carried out.

[0029] This stacking auxiliary mold can effectively prevent the shifting of pole pieces during the stacking process, which can lead to poor alignment and cause micro-short circuits and hard short circuits in the battery, or lead to unsatisfactory battery performance. This mold can effectively improve the efficiency and yield of all-solid-state soft-pack battery production.

[0030] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention falls within the scope of protection of the present invention.

Claims

1. An auxiliary mold for all-solid-state soft-pack battery stacking, characterized by: It includes a material platform body, which is a rectangular frame structure with an open top. One end of the material platform body in the length direction is provided with a positive electrode tab positioning groove and a negative electrode tab positioning groove, and the other end is provided with a pole piece withdrawal groove. A side glue groove is provided on each side of the material platform body in the width direction.

2. The all-solid-state soft-pack battery stack auxiliary mold according to claim 1, characterized in that: The positive electrode tab positioning groove and the negative electrode tab positioning groove pass through the side wall of the material platform body.

3. The all-solid-state soft-pack battery stack auxiliary mold according to claim 1, characterized in that: The pole piece withdrawal groove passes through the side wall and bottom of the material platform body.

4. The all-solid-state soft-pack battery stack auxiliary mold according to claim 1, characterized in that: The side glue groove runs through the side wall and bottom of the material platform body.

5. The all-solid-state soft-pack battery stack auxiliary mold according to claim 1, characterized in that: A through hole is also provided near the middle position of the bottom of the material platform body.

6. The all-solid-state soft-pack battery stack auxiliary mold according to claim 1, characterized in that: The material platform body is made of polytetrafluoroethylene plate, organic glass plate or stainless steel plate.

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