An intermediate soft-pack battery convenient for processing

Abstract

This utility model discloses an easily processed intermediate soft-pack battery, relating to the field of soft-pack batteries. In this utility model, an outer packaging body extends outward from the side of the battery cell without tabs to form a cavity. An electrolyte bag is placed within the cavity, and finally, a sealing edge is provided along the edge of the outer packaging body to form the intermediate soft-pack battery. During subsequent processing, the bag inside the cavity of this intermediate soft-pack battery can be ruptured by compression, allowing the electrolyte inside the bag to permeate the battery cell. This allows for the aging and storage of the battery cell without the need for electrolyte injection or disassembly of the outer packaging body, and the aging time and environment are controllable. Subsequent simple processes such as degassing, molding, and testing can produce a finished battery. Overall, this method achieves sealed shipment of the battery cell along with the required electrolyte, maximizing front-end material input and equipment investment, reducing back-end equipment and R&D investment, and ensuring battery cell performance.

Description

Technical Field

[0001] This utility model relates to the field of pouch batteries, and more particularly to an intermediate pouch battery that is easy to process. Background Technology

[0002] Lithium-ion batteries consist of core materials such as positive electrode, negative electrode, separator, and electrolyte. The production of lithium-ion batteries involves multiple complex processes, including slurry mixing, coating, rolling, sheet forming, and assembly.

[0003] Mass production of lithium batteries requires a large number of large, high-precision equipment, such as mixers, coating machines, rolling mills, slitting machines, stacking machines, packaging machines, and high-temperature ovens. These machines occupy a significant amount of space, and due to physical space constraints in the production area, different processes need to be zoned and planned.

[0004] To meet the diverse needs of lithium battery products, battery manufacturing involves complex processes such as slurry formulation, coating, drying, rolling, slitting, welding, packaging, and baking, which require different R&D teams to develop separately. This also involves the modular division of labor for intermediate batteries.

[0005] Furthermore, the lithium-ion battery market also involves specialization, with some companies purchasing battery intermediates and processing them into finished batteries. For example, they purchase electrode sheets, cut and customize them, and then process them into finished batteries that meet the needs of their own customers through processes such as winding / stacking, welding, packaging, baking, electrolyte injection, formation, and capacity testing.

[0006] In the division of labor in the manufacturing process, this type of semi-finished battery is favored by small and medium-sized battery companies due to its high degree of completion and low equipment dependence. However, due to inconsistent transportation times, the post-filling storage time of semi-finished batteries is difficult to control. If the storage time is too long, the evaporation of organic solvents in the electrolyte will cause lithium salt decomposition, generating acidic substances and corroding the SEI film. If the storage time is too short, the electrolyte wetting and absorption will be insufficient, both of which ultimately affect the cell performance. In addition, the storage of the electrolyte also has high requirements for environmental temperature and humidity.

[0007] If a pre-packaged cell casing and pre-packaged electrolyte solution is adopted, customers can independently control the electrolyte injection time according to their production plan, thus solving the problem of controlling the post-injection storage time. However, the electrolyte injection process increases the burden on customers in terms of process management, equipment, and site.

[0008] This shows that there is currently a demand for semi-finished batteries in the market. However, while semi-finished batteries that have been filled with electrolyte but not yet formed are popular, there are problems such as difficulty in controlling the electrolyte storage time and the potential impact on the quality of the finished battery. Utility Model Content

[0009] To address the problems existing in the prior art, the main objective of this utility model is to provide an easy-to-process intermediate soft-pack battery. The electrolyte can be encapsulated and stored inside the intermediate soft-pack battery, allowing customers to inject the electrolyte and store it in a controlled manner with time, temperature, and humidity without opening the aluminum-plastic bag. This adapts to the market-oriented division of labor in lithium battery production and ensures the quality and performance of the battery.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An easy-to-process intermediate soft-pack battery includes a cell, an outer packaging body, and tabs, wherein the tabs are connected to the cell; the outer packaging body wraps the cell inside and exposes the tabs, wherein the outer packaging body also extends outward from the side of the cell without tabs to form a cavity;

[0012] The cavity is provided with a sealed bag, and the bag is provided with electrolyte.

[0013] The outer packaging has a sealing edge along the edge of the package to seal the battery cell and the bag.

[0014] Preferably, the edge of the bag is connected to the sealing edge of the outer packaging.

[0015] Preferably, the bag body is a tubular structure, one end of the tubular bag body is provided with a weak sealing structure, and the other end of the tubular bag body is connected to the sealing edge of the outer packaging body.

[0016] Preferably, the strength of the weak sealing structure of the bag body is less than the strength of other parts of the bag body.

[0017] Preferably, the outer packaging body is made of aluminum-plastic film, the inner layer of the outer packaging body is made of plastic, and the material of the bag body is the same as the material of the inner layer of the outer packaging body.

[0018] Preferably, the tabs include two tabs, one for a positive electrode and one for a negative electrode. The two tabs are welded to the same side of the battery cell, the end with the tabs is the head of the battery cell, the opposite end with the tabs is the tail of the battery cell, and the two sides adjacent to the head of the battery cell are the sides of the battery cell.

[0019] Preferably, the outer packaging body is composed of a single piece of packaging film, the outer packaging body wraps from the tail end of the battery cell to the head end of the battery cell in its middle part, the cavity extends from the outer packaging body toward one side of the battery cell, the sealing edge is provided on the other side of the battery cell, the head end of the battery cell and the edge of the cavity, and the bag body is connected to the sealing edge on one side of the cavity edge.

[0020] Preferably, the outer packaging body is composed of a single piece of packaging film, which wraps around the middle to form a cavity, and then wraps around the battery cell from the tail to the head of the battery cell. The sealing edge is provided on the two sides of the battery cell, the head of the battery cell, and the edge of the cavity. The bag body is connected to the sealing edge on one side of the cavity edge.

[0021] Preferably, the tabs include two tabs, one for a positive electrode and one for a negative electrode. The two tabs are welded to opposite ends of the battery cell. The outer packaging is made of a single piece of packaging film. The outer packaging wraps one side of the battery cell from one side to the other side, and extends outward from the other side of the battery cell to form a cavity. The sealing edge is provided at the edge of the battery cell and the edge of the cavity. The bag is connected to the sealing edge outside the edge of the cavity.

[0022] Preferably, the front and back of the electrode tab are covered with a sealing compound, and the electrode tab is connected to the sealing edge through the sealing compound.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] (1) In this utility model, an outer packaging body extends outward from the side of the cell without tabs to form a cavity, and an electrolyte bag is placed in the cavity. Finally, a sealing edge is set along the edge of the outer packaging body to form an intermediate soft-pack battery. In further processing, the bag is ruptured by squeezing, and the electrolyte flows out from the bag into the outer packaging body and permeates into the cell. The electrolyte is then allowed to soak into the cell by resting, thereby achieving controllable resting time and environment. When the intermediate soft-pack battery is formed, the generated gas can fill the cavity without leakage or causing excessive pressure on the outer packaging body. A sealing edge is set on one side of the cavity, and the excess outer packaging body is cut off to form the finished battery. At the same time, the outer packaging body encapsulates the cell with the tabs already welded. In addition, except for the cavity side, the other edges of the outer packaging body have been sealed. The subsequent processes are few and the equipment is simple. Overall, the goal is to ship battery cells along with the required electrolyte in a sealed package, maximizing the input of materials and equipment at the front end. This reduces the investment in back-end equipment and R&D technology while ensuring battery cell performance, in terms of cost-effectiveness, technical expertise, and supply chain efficiency.

[0025] (2) In this utility model, the bag body is further configured as a tubular structure. The inner end opening of the tubular structure is provided with a weak sealing structure, so that it is easy to break after squeezing. Electrolyte can be injected into the outer end opening of the tubular structure. After the electrolyte is injected, the outer end opening of the tubular structure and the edge of the outer packaging body are heat-sealed together to form a sealing edge, so that the processing technology has the advantages of simplicity and continuity. At the same time, the sealing edge of the bag body and the outer packaging body are connected to fix the bag body, avoid accidental breakage during transportation, and also avoid contact with the battery core.

[0026] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 A cross-sectional structural diagram of the intermediate soft-pack battery according to Embodiment 1 of this utility model;

[0028] Figure 2 A three-dimensional structural diagram of an intermediate soft-pack battery according to Embodiment 1 of this utility model;

[0029] Figure 3 A cross-sectional structural diagram of the intermediate soft-pack battery in the finished product state according to Embodiment 1 of this utility model;

[0030] Figure 4 A three-dimensional structural diagram of the intermediate soft-pack battery in the finished product state according to Embodiment 1 of this utility model.

[0031] Figure 5 A cross-sectional structural diagram of the intermediate soft-pack battery according to Embodiment 2 of this utility model;

[0032] Figure 6 A three-dimensional structural diagram of the intermediate soft-pack battery according to Embodiment 2 of this utility model;

[0033] Figure 7 A cross-sectional structural diagram of the intermediate soft-pack battery in the finished product state according to Embodiment 2 of this utility model;

[0034] Figure 8 A three-dimensional structural diagram of the intermediate soft-pack battery in the finished product state according to Embodiment 2 of this utility model.

[0035] Figure 9 A cross-sectional structural diagram of the intermediate soft-pack battery according to Embodiment 3 of this utility model;

[0036] Figure 10 A cross-sectional structural diagram of the intermediate soft-pack battery in the finished product state according to Embodiment 3 of this utility model.

[0037] Reference numerals: 10, battery cell; 20, outer packaging; 21, cavity; 22, sealing edge; 30, electrode tab; 31, sealing colloid; 40, bag; 41, weak sealing structure. Detailed Implementation

[0038] To better illustrate the purpose, technical solution, and advantages of this utility model, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0039] It should be noted that when a component / part is referred to as being "set on" another component / part, it can be directly set on the other component / part or there may be an intervening component / part. When a component / part is referred to as being "connected / linked" to another component / part, it can be directly connected / linked to the other component / part or there may be an intervening component / part. The term "connected / linked" as used herein can include electrical and / or mechanical physical connections / links. The term "including / comprises" as used herein means the presence of a feature, step, or component / part, but does not exclude the presence or addition of one or more other features, steps, or components / parts. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. Furthermore, in the description of this application, the terms "first," "second," etc., are used for descriptive purposes and to distinguish similar objects only; there is no order between them, nor should they be construed as indicating or implying relative importance. Additionally, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0042] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0043] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0044] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0045] Example 1

[0046] like Figure 1 and Figure 2 The diagram illustrates a processable intermediate soft-pack battery according to Embodiment 1 of this utility model. This embodiment of the intermediate soft-pack battery includes a cell 10, an outer packaging 20, tabs 30, and a pouch 40. The cell 10 is composed of a positive electrode, a negative electrode, and a separator. Exemplarily, in this embodiment, the cell 10 is approximately rectangular; in other embodiments, the cell 10 may also present a regular three-dimensional shape such as a regular polyhedron or other irregular three-dimensional shapes. The tabs 30 of the positive electrode are welded to the terminals of all positive electrode pieces of the cell 10, and the tabs 30 of the negative electrode are welded to the terminals of all negative electrode pieces of the cell 10, to lead out the electrodes of the cell 10. The outer packaging 20 encloses the cell 10 and exposes the tabs 30. For example, in this embodiment, the outer packaging 20 is composed of a single piece of aluminum-plastic packaging film. In other embodiments, the outer packaging 20 may also be a double piece of aluminum-plastic packaging film, wrapping the battery cell 10 in a relatively opposite manner; or, the outer packaging 20 may also be a packaging film made of other materials. Each tab 30 is wrapped with a sealing adhesive 31 on both sides, so that the tab 30 can be tightly wrapped by the outer packaging 20. The width of the sealing adhesive 31 is greater than the width of the tab 30, so that the sealing adhesive 31 on both sides is also tightly connected to each other.

[0047] To achieve the purpose of this disclosure, specifically, the end of the battery cell 10 with two tabs 30 welded on is called the head of the battery cell 10, the end of the battery cell 10 opposite to the tabs 30 is called the tail of the battery cell 10, and the two sides of the battery cell 10 adjacent to the head are called the left and right sides of the battery cell 10. In this embodiment, the outer packaging body 20 wraps around the head of the battery cell 10 from the tail to the head of the battery cell 10 with its middle part. On the left side of the battery cell 10, the edge of the outer packaging body 20 is heat-sealed and cut to form a sealing edge 22. On the right side of the battery cell 10, that is, the side of the battery cell 10 without tabs 30, the outer packaging body 20 extends to the right to form a cavity 21. A closed bag 40 is provided inside the cavity 21. The bag 40 is a tubular structure, and a weak sealing structure 41 is provided at the inner end of the tubular bag 40. Electrolyte is provided in the bag 40 by filling it from the outer end of the tubular bag 40. On the right side of the cavity 21, the edge of the outer packaging 20 is heat-sealed and cut to form a sealing edge 22. After the electrolyte is filled, the outer end of the tubular bag 40 is sealed to the sealing edge 22 on the right side of the outer packaging 20. At the head of the battery cell 10, the edge of the outer packaging 20 is heat-sealed and cut to form a sealing edge 22, which is simultaneously sealed to the sealing adhesive 31 of the tabs 30, and also seals the upper side of the cavity 21.

[0048] Thus, the outer packaging 20 encloses the battery cell 10 in a sealed manner, and a cavity 21 is wrapped around the right side of the battery cell 10. A bag 40 containing electrolyte is located within the cavity 21. The inner opening of the tubular bag 40 is equipped with a weak sealing structure 41, making it easy to rupture after compression. The outer opening of the tubular bag 40 allows for the injection of electrolyte. After injection, the outer opening of the tubular bag 40 is heat-sealed together with the edge of the outer packaging 20 to form a sealing edge 22. This provides the advantages of a simple and continuous processing method. Simultaneously, the connection between the bag 40 and the sealing edge 22 of the outer packaging 20 serves to fix the bag 40, preventing displacement during transportation.

[0049] The intermediate pouch battery disclosed herein can be stored for a long time and can be awaited for shipment without concern about the evaporation of the electrolyte solvent. When the intermediate pouch battery arrives at the branch office or customer's site for further production, the electrolyte can be released from the weak sealing structure 41 of the bag 40 by squeezing the bag 40 inside the cavity 21. Under a temperature and humidity controlled environment, the cell 10 absorbs the electrolyte and completes the aging process. Specifically, the subsequent processes of the intermediate pouch battery disclosed herein include:

[0050] (1) Aging: The battery cell is left to stand for 24-72 hours at room temperature or under controlled temperature to promote uniform distribution of electrolyte and reduce performance fluctuations during subsequent use. Some processes involve pressurized formation.

[0051] (2) Vacuuming: The battery cell is placed in a vacuum environment. A pressure relief channel is set in the cavity 21 of the outer packaging 20 to extract the residual gas generated during aging through negative pressure. In some processes, liquid is replenished after vacuuming.

[0052] (3) Molding: A sealing edge 22 is provided on the right side of the outer packaging body 20 near the battery cell 10. Excess material of the outer packaging body 20 (part of the cavity 21) is removed, such as... Figure 3 and Figure 4 As shown, the sealing edge 22 of the outer packaging body 20 is folded.

[0053] (4) Capacity grading: Perform constant current charge and discharge tests on the cells and record the discharge capacity. Group the cells according to their capacity values ​​(e.g., ±2% tolerance) and discard any defective cells.

[0054] As can be seen, the intermediate soft-pack battery of this utility model eliminates the need for customers to undergo processes such as material preparation, coating, film rolling, sheet making, stacking, electrode tab welding 30, packaging, and baking, and also eliminates the need for electrolyte injection. Customers only need to perform processes such as aging, degassing, molding, and capacity testing. During the aging process, there is no need to disassemble the outer packaging or inject electrolyte; only simple squeezing is required to bring the electrolyte-filled bag 40 inside. The duration, temperature, humidity, and pressure during the aging process can be controlled, thereby ensuring the stability of battery quality. Gases generated during the aging process can be released into the cavity 21 of the outer packaging 20 and discharged during the degassing process.

[0055] It is understood that, specifically in this embodiment, the strength of the weak-sealing structure 41 of the tubular bag body 40 is less than the strength of the sealing edge 22 of the outer end of the tubular bag body 40 integrally heat-sealed to the outer packaging body 20. The strength of the weak-sealing structure 41 of the tubular bag body 40 is less than the strength of the sidewall of the tubular bag body 40. Specifically, adjusting the width of the weak-sealing structure 41 or changing its shape can adjust the strength of the weak-sealing structure 41, thereby making it easier for the bag body 40 to rupture from one side of the weak-sealing structure 41 when squeezed. The strength of the weak-sealing structure 41 balances resistance to rupture during transportation and ease of rupture during subsequent processing.

[0056] It is understood that the outer packaging body 20 in this embodiment is made of aluminum-plastic film, and the inner layer of the outer packaging body 20 is made of PP plastic. The bag body 40 is also made of PP plastic, the same material as the inner layer of the outer packaging body 20, which makes it easy for the bag body 40 to be sealed and welded to the outer packaging body 20. Furthermore, the sealing adhesive 31 is also made of PP plastic, so that the sealing adhesive 31 on both sides of the tab 30 can be easily sealed and welded to each other, and the sealing adhesive 31 can be easily sealed and connected to the outer packaging body 20.

[0057] Example 2

[0058] like Figure 5 and Figure 6The diagram shows a processable intermediate soft-pack battery according to Embodiment 2 of this utility model. This intermediate soft-pack battery includes a cell 10, an outer packaging body 20, tabs 30, and a pouch 40. Compared to Embodiment 1, in this embodiment, specifically, the outer packaging body 20 forms a cavity 21 by wrapping its middle portion, and then wraps from the tail end of the cell 10 to the head end, i.e., the cavity 21 is formed on the side of the cell 10 where the tabs 30 are not located. A sealed pouch 40 is disposed within the cavity 21. The pouch 40 has a tubular structure, and a weak sealing structure 41 is provided at the inner end of the tubular pouch 40. Electrolyte is provided in the pouch 40 by filling it with electrolyte from the outer end of the tubular pouch 40. At the head end of the cell 10, the edge of the outer packaging body 20 forms a sealing edge 22 by heat sealing and cutting. The outer end of the tubular bag 40 is fused to the edge of the outer packaging 20 on the left side of the cavity 21, forming a sealing edge 22 that seals the left side of the battery cell 10, the left side of the cavity 21, and the outer end of the bag 40. The edge of the outer packaging 20 on the right side of the battery cell 10 and the edge of the outer packaging 20 on the left side of the cavity 21 are fused together to form the sealing edge 22.

[0059] refer to Figure 7 and Figure 8 When the intermediate soft-pack battery of this embodiment arrives at the branch office or customer site for further production, the electrolyte can flow out from the weak sealing structure 41 of the bag 40 by squeezing the bag 40 inside the cavity 21. Under a temperature and humidity controlled environment, the cell 10 absorbs the electrolyte and completes aging. After aging, a pressure relief channel is set in the cavity 21 part of the outer packaging 20, and the residual gas generated during aging is extracted by negative pressure. A sealing edge 22 is formed by hot pressing at the tail of the cell 10. The outer packaging 20 in the cavity 21 part is cut off, and the sealing edge 22 of each outer packaging 20 is folded to form the finished battery. The cells are subjected to constant current charge and discharge tests, the discharge capacity is recorded, and they are grouped according to the capacity value. Defective products are rejected, and the cells can be sold and shipped.

[0060] As can be seen, the intermediate soft-pack battery of this embodiment can also have a cavity 21 of outer packaging body 20 provided at the tail of the cell body 10, and a bag body 40 containing electrolyte is placed in the cavity 21.

[0061] Example 3

[0062] like Figure 9 and Figure 10The diagram shows a processable intermediate soft-pack battery according to Embodiment 3 of this utility model. This intermediate soft-pack battery includes a cell 10, an outer packaging body 20, tabs 30, and a pouch 40. Compared to Embodiment 1, in this embodiment, the tabs 30 specifically include two tabs 30, one for a positive electrode and one for a negative electrode. The two tabs 30 are welded to opposite ends of the cell 10. No tabs 30 are welded to the left or right sides of the cell 10. The outer packaging body 20 wraps around the cell 10 from the left side to the right side with its middle portion. At both ends of the cell 10, the edges of the outer packaging body 20 are heat-sealed to form sealing edges 22. The outer packaging body 20 extends to the right of the cell 10 to form a cavity 21, i.e., a cavity 21 is formed on the side of the cell 10 where no tabs 30 are provided. A sealed pouch 40 is disposed within the cavity 21. The bag body 40 has a tubular structure, and a weak sealing structure 41 is provided at the inner end of the tubular bag body 40. Electrolyte is provided in the bag body 40 by filling it from the outer end of the tubular bag body 40. The edges of the outer packaging body 20 at both ends of the battery cell 10 extend to seal the edges of the cavity 21. On the right side of the cavity 21, the edge of the outer packaging body 20 is heat-sealed to form a sealing edge 22.

[0063] As can be seen, the intermediate soft-pack battery of this embodiment can also have tabs 30 at both ends of the cell body 10, and a cavity 21 and a bag body 40 containing electrolyte are provided on one of the sides adjacent to the tabs 30.

[0064] The above embodiments mainly describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A processable intermediate soft-pack battery, comprising a cell (10), an outer packaging (20), and tabs (30), wherein the tabs (30) are connected to the cell (10); the outer packaging (20) encloses the cell (10) within itself and exposes the tabs (30), characterized in that: The outer packaging (20) also extends outward from the side of the battery cell (10) where the tabs (30) are not provided to form a cavity (21); The cavity (21) is provided with a closed bag (40), and the bag (40) is provided with electrolyte; The outer packaging (20) has a sealing edge (22) along the edge of the package to seal the battery cell (10) and the bag (40).

2. The easily processed intermediate soft-pack battery according to claim 1, characterized in that: The edge of the bag (40) is connected to the sealing edge (22) of the outer packaging (20).

3. The easily processed intermediate soft-pack battery according to claim 2, characterized in that: The bag body (40) is a tubular structure. One end of the tubular bag body (40) is provided with a weak sealing structure (41), and the other end of the tubular bag body (40) is connected to the sealing edge (22) of the outer packaging body (20).

4. The easily processed intermediate soft-pack battery according to claim 3, characterized in that: The strength of the weak sealing structure (41) of the bag body (40) is less than the strength of other parts of the bag body (40).

5. The easily processed intermediate soft-pack battery according to claim 2, characterized in that: The outer packaging body (20) is made of aluminum-plastic film, the inner layer of the outer packaging body (20) is made of plastic, and the material of the bag body (40) is the same as that of the inner layer of the outer packaging body (20).

6. A processable intermediate pouch cell according to any one of claims 1 to 5, characterized in that: The tabs (30) include two tabs (30) for a positive electrode and a negative electrode. The two tabs (30) for the positive electrode and the negative electrode are respectively welded to the same side of the battery cell (10). The end with the tabs (30) is the head of the battery cell (10), the opposite end with the tabs (30) is the tail of the battery cell (10), and the two sides adjacent to the head of the battery cell (10) are the sides of the battery cell (10).

7. The easily processed intermediate soft-pack battery according to claim 6, characterized in that: The outer packaging (20) is made of a single piece of packaging film. The outer packaging (20) wraps around the battery cell (10) from the tail to the head of the battery cell (10) with its middle part. The cavity (21) extends from the outer packaging (20) toward one side of the battery cell (10). The sealing edge (22) is provided on the other side of the battery cell (10), the head of the battery cell (10), and the edge of the cavity (21). The bag (40) is connected to the sealing edge (22) on one side of the edge of the cavity (21).

8. A processable intermediate soft-pack battery according to claim 6, characterized in that: The outer packaging body (20) is made of a single piece of packaging film. The outer packaging body (20) wraps the middle part to form a cavity (21), and then wraps from the tail of the battery cell (10) to the head of the battery cell (10). The sealing edge (22) is provided on the two sides of the battery cell (10), the head of the battery cell (10) and the edge of the cavity (21). The bag body (40) is connected to the sealing edge (22) on one side of the edge of the cavity (21).

9. A processable intermediate soft-pack battery according to claim 1, characterized in that: The tabs (30) include two tabs (30) for a positive electrode and a negative electrode. The two tabs (30) for the positive electrode and the negative electrode are respectively welded to the opposite ends of the battery cell (10). The outer packaging (20) is made of a single piece of packaging film. The outer packaging (20) wraps one side of the battery cell (10) from the middle to the other side, and extends outward on the other side of the battery cell (10) to form a cavity (21). The sealing edge (22) is provided at the edge of the battery cell (10) and the edge of the cavity (21). The bag (40) is connected to the sealing edge (22) on the outside of the edge of the cavity (21).

10. A processable intermediate soft-pack battery according to claim 1, characterized in that: The tab (30) is covered with a sealing compound (31) on both sides, and the tab (30) is connected to the sealing edge (22) through the sealing compound (31).

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