Rubber frame structure of soft package battery and soft package battery

Abstract

The utility model relates to the technical field of batteries, and discloses a rubber frame structure of a soft package battery and the soft package battery, the rubber frame structure of the soft package battery provided by the utility model comprises a top frame and a bottom frame which are oppositely arranged, and a first side frame and a second side frame which are oppositely arranged, the top frame, the first side frame, the bottom frame and the second side frame are connected end to end to define a cavity for accommodating a battery cell; the bottom frame is arranged opposite to the bottom of the battery cell, a gasket is arranged on the surface, opposite to the battery cell, of the bottom frame, and the gasket is bonded and fixed with the bottom of the battery cell. According to the utility model, the gasket which can be adhered to the bottom of the battery cell is arranged between the bottom frame and the bottom of the battery cell, so that the bottom of the battery cell is completely attached, glue liquid is prevented from flowing to the bottom of the battery cell, and overlarge local stress is avoided. The gasket has the elastic characteristic, the elastic characteristic enables the gasket to have good buffering performance, impact force generated in the glue injection process can be effectively absorbed, and the risk that an aluminum plastic film is sunken is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a plastic frame structure for a soft-pack battery and the soft-pack battery itself. Background Technology

[0002] In the field of pouch battery manufacturing, low-pressure injection molding is widely used in the production process of pouch batteries, which require filling all four sides with glue, to provide the battery with good sealing, protection and electrical insulation performance, and to ensure that the battery operates stably in various environments.

[0003] The cell structure of pouch batteries is quite unique, with a gap between the aluminum-plastic film at the bottom of the cell and the core, and the aluminum-plastic film is relatively soft. During low-pressure injection molding, the injection pressure and injection speed become key factors affecting the cell quality. When the adhesive is injected, the injection pressure directly acts on the aluminum-plastic film, subjecting it to external force; changes in the injection speed alter the flow state of the adhesive, causing the impact force on the aluminum-plastic film to vary at different locations and times. This makes the aluminum-plastic film highly susceptible to compression and dents.

[0004] As a crucial encapsulation material for battery cells, aluminum-plastic film not only protects the internal structure of the cell from external environmental corrosion but also plays a vital role in stabilizing the cell's electrical performance. Dents in the aluminum-plastic film can damage the internal electrode structure, altering the spacing between electrodes and affecting the battery's charge and discharge performance. In severe cases, dents may even puncture the internal separator, causing a short circuit and significantly reducing battery safety and lifespan.

[0005] Existing technologies typically optimize the injection pressure and speed by adding a baffle at the bottom of the adhesive frame and setting injection holes. The baffle can, to some extent, prevent the adhesive from directly impacting the aluminum-plastic film, while the injection holes help regulate the flow rate and pressure distribution of the adhesive, allowing for more uniform filling.

[0006] However, due to length tolerances in the battery cell manufacturing process, the frame and the bottom of the cell cannot be completely bonded together, resulting in gaps. During the adhesive injection process, the adhesive flows through these gaps to the bottom of the cell, creating additional pressure and still failing to effectively prevent the aluminum-plastic film from being squeezed and deformed. Utility Model Content

[0007] This utility model embodiment aims to address the problems in the prior art where adding a baffle wall and setting glue penetration holes at the bottom of the glue frame to optimize the glue injection pressure and speed is problematic. Due to the tolerance of the cell size, a gap exists between the glue frame and the bottom of the cell. During glue injection, the glue flows along the gap to the bottom of the cell, generating additional pressure at the bottom of the cell. This causes the aluminum-plastic film to be squeezed and deformed, forming dents, damaging the internal structure of the cell, and affecting battery performance and safety. This embodiment provides a glue frame structure for a soft-pack battery and a soft-pack battery itself.

[0008] The technical effect to be achieved by this utility model is realized through the following technical solution:

[0009] Firstly, this utility model provides a frame structure for a soft-pack battery to accommodate a battery cell. It includes a top frame and a bottom frame, as well as a first side frame and a second side frame, arranged opposite to each other. The top frame, the first side frame, the bottom frame, and the second side frame are connected end-to-end to form a cavity for accommodating the battery cell. The bottom frame is positioned opposite to the bottom of the battery cell, and a gasket is provided on the opposite side of the bottom frame to the battery cell. The gasket is bonded to the bottom of the battery cell. By providing a gasket between the bottom frame and the bottom of the battery cell, the bottom of the battery cell is completely fitted, preventing adhesive from flowing to the bottom of the battery cell. Simultaneously, the injection force on the bottom of the battery cell is evenly distributed, preventing excessive localized stress. The gasket has elastic properties, which provide excellent cushioning performance, effectively absorbing the impact force generated during the injection process and significantly reducing the risk of aluminum-plastic film denting.

[0010] In some alternative implementations, a boss extends from the bottom frame opposite to the battery cell towards the battery cell, and the gasket is connected to the opposite side of the boss to the bottom of the battery cell.

[0011] In some optional implementations, a first injection cavity is formed between the gasket and the surface of the bottom frame opposite to the battery cell. The adhesive injected into the first injection cavity cures on the protrusion, and the adhesive is bonded and fixed to the gasket. Protrusions on the surface of the bottom frame opposite to the battery cell allow the adhesive to better fill and fix the bottom of the battery cell after injection, preventing the adhesive from detaching from the bottom frame and ensuring the stability of the adhesive during long-term battery use.

[0012] In some optional implementations, the length of the spacer is the same as the width of the battery cell along its width direction. This spacer length design allows for complete coverage of the area at the bottom of the battery cell that is susceptible to the effects of injection pressure. This ensures that the injection pressure is evenly distributed across the entire bottom of the battery cell, avoiding uneven local stress, effectively reducing the risk of the aluminum-plastic film denting due to excessive local pressure, and providing comprehensive protection for the aluminum-plastic film and internal structure at the bottom of the battery cell, thereby improving the safety and stability of the battery.

[0013] In some alternative implementations, the width of the spacer is smaller than the thickness of the cell along its thickness direction. This spacer width design effectively disperses the injection pressure while preventing interference with other components due to excessive size. This ensures both buffering and pressure dispersion functions, as well as a reasonable layout and proper assembly of the battery components.

[0014] In some optional implementations, the thickness of the gasket is set to a range of 0.2mm-2mm along the length of the battery cell. This thickness range ensures that the gasket has sufficient elasticity to effectively buffer pressure during glue injection, prevent the aluminum-plastic film from denting, and ensure the compactness and stability of the overall battery structure.

[0015] In some alternative implementations, the gasket may include a PC sheet, a rubber gasket, a silicone sheet, a foam sheet, or a PET sheet.

[0016] In some optional implementations, a plurality of first protrusions extend from the inner wall of the first side frame toward the battery cell, and the plurality of first protrusions are equally spaced along the length of the first side frame. The design of the first protrusions strengthens the bonding effect between the adhesive and the first side frame, so that the adhesive forms a more solid connection structure after curing, and further enables the adhesive to fit better with the first side frame, preventing the adhesive from separating from the first side frame, and ensuring the reliability and stability of the adhesive.

[0017] And / or, a plurality of second protrusions extend from the inner wall of the second side frame toward the battery cell, and the plurality of second protrusions are equally spaced along the length of the second side frame. The design of the second protrusions strengthens the bonding between the adhesive and the second side frame, so that the adhesive forms a more robust connection structure after curing, further enabling better fitting between the adhesive and the second side frame, preventing separation between the adhesive and the second side frame, and ensuring the reliability and stability of the adhesive application.

[0018] In some optional implementations, along the thickness direction of the battery cell, a plurality of first injection holes penetrating the first side frame are provided on the first side frame, and the plurality of first injection holes are equally spaced along the length direction of the first side frame.

[0019] And / or, along the thickness direction of the battery cell, a plurality of second injection holes penetrating the second side frame are provided on the second side frame, and the plurality of second injection holes are equally spaced along the length direction of the second side frame.

[0020] Secondly, this utility model provides a pouch battery, including a battery cell and a frame structure as described in any of the above claims. The battery cell is housed within the cavity of the frame structure, and the bottom of the battery cell is bonded and fixed to the gasket. By employing the frame structure described above, this pouch battery effectively reduces the pressure of the adhesive on the aluminum-plastic film of the battery cell during low-pressure adhesive injection, lowering the risk of the aluminum-plastic film denting and thus better protecting the internal structure of the battery cell.

[0021] In summary, this utility model has at least the following advantages:

[0022] The plastic frame structure of the soft-pack battery provided by this utility model, by setting a gasket between the bottom frame and the bottom of the battery cell, allows the bottom of the battery cell to be completely adhered, preventing adhesive from flowing to the bottom of the battery cell. It also evenly distributes the injection force on the bottom of the battery cell, avoiding excessive localized stress. This gasket has elastic properties, which provide excellent cushioning performance, effectively absorbing the impact force generated during the injection process and significantly reducing the risk of aluminum-plastic film denting.

[0023] The soft-pack battery provided by this utility model, by adopting the above-described adhesive frame structure, effectively reduces the compression of the aluminum-plastic film of the battery cell by the adhesive during low-pressure adhesive injection, reduces the risk of aluminum-plastic film dent, and thus better protects the internal structure of the battery cell.

[0024] The above description is merely an overview of the technical solutions of the present utility model embodiments. In order to better understand the technical means of the present utility model embodiments and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present utility model embodiments more obvious and understandable, specific embodiments of the present utility model are described below. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the frame structure of a soft-pack battery provided in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the diagram.

[0027] Figure 3 for Figure 1 Enlarged schematic diagram of part B in the diagram.

[0028] Figure 4This is a schematic diagram of the structure of a soft-pack battery provided in an embodiment of the present invention.

[0029] Figure 5 An exploded schematic diagram of a soft-pack battery provided for an embodiment of this utility model.

[0030] Figure 6 for Figure 4 Enlarged schematic diagram of part C in the diagram.

[0031] Marked in the image:

[0032] 10. Top border;

[0033] 20. Bottom border; 21. Boss;

[0034] 30. First side frame; 31. First protrusion; 32. First injection hole;

[0035] 40. Second side frame; 41. Second protrusion; 42. Second injection hole;

[0036] 50. Gasket;

[0037] 60. Battery cells;

[0038] 70. Adhesive layer;

[0039] 80. Glue frame lock lugs;

[0040] 90. PCB board. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] This utility model embodiment adopts a scheme of adding a baffle wall and setting glue penetration holes at the bottom of the glue frame to optimize the glue injection pressure and glue injection speed. Due to the tolerance of the cell size, there is a gap between the glue frame and the bottom of the cell. During glue injection, the glue flows along the gap to the bottom of the cell, generating additional pressure at the bottom of the cell. This causes the aluminum-plastic film to be squeezed and deformed, forming dents, damaging the internal structure of the cell, and affecting battery performance and safety. This invention provides a glue frame structure for a soft-pack battery.

[0044] Please see Figures 1-3 The present invention provides a plastic frame structure for a soft-pack battery.

[0045] In this embodiment, the plastic frame structure of the soft-pack battery is mainly used to accommodate the battery cell 60 and to fix the battery cell 60 in place.

[0046] The frame structure of the soft-pack battery mainly includes a top frame 10 and a bottom frame 20 arranged opposite to each other, as well as a first side frame 30 and a second side frame 40 arranged opposite to each other. The top frame 10, the first side frame 30, the bottom frame 20 and the second side frame 40 are connected end to end to form a cavity for accommodating the battery cell 60. The bottom frame 20 is arranged opposite to the bottom of the battery cell 60, and a gasket 50 is provided on the opposite side of the bottom frame 20 and the battery cell 60. The gasket 50 is bonded and fixed to the bottom of the battery cell 60.

[0047] In this embodiment, the frame structure can also be understood as follows: the first side frame 30 and the second side frame 40 have the same structure and are symmetrically arranged; the opposite ends of the top frame 10 are integrally connected to the first ends of the first side frame 30 and the second side frame 40, respectively; the opposite ends of the second side frame 40 are integrally connected to the second ends of the first side frame 30 and the second side frame 40, respectively, thereby forming a cavity for accommodating the battery cell 60; the top of the battery cell 60, which is housed in the cavity, is positioned opposite to the top frame 10, the bottom of the battery cell 60 is positioned opposite to the bottom frame 20, and the opposite side walls of the battery cell 60 are positioned opposite to the first side frame 30 and the second side frame 40, respectively. A gasket 50 is provided on the opposite side of the bottom frame 20 to the battery cell 60 and is bonded and fixed to the bottom of the battery cell 60.

[0048] The plastic frame structure of the soft-pack battery provided in this embodiment uses a gasket 50, which can be bonded to the bottom of the battery cell 60, to ensure complete adhesion of the bottom of the battery cell 60. This prevents adhesive from flowing to the bottom of the battery cell and also evenly distributes the injection force on the bottom of the battery cell 60, avoiding excessive local stress. The gasket 50 has elastic properties, which give it good cushioning performance and can effectively absorb the impact force generated during the injection process, significantly reducing the risk of aluminum-plastic film denting.

[0049] This embodiment is a preferred embodiment, and the size of the gasket 50 is limited.

[0050] Specifically, along the width direction of the cell 60, the length of the pad 50 is the same as the width of the cell 60.

[0051] The 50mm long gasket design fully covers the area at the bottom of the battery cell 60 that is susceptible to the effects of injection pressure. This ensures that the injection pressure is evenly distributed across the entire bottom of the battery cell 60, avoiding uneven stress in certain areas. It effectively reduces the risk of the aluminum-plastic film denting due to excessive local pressure, providing comprehensive protection for the aluminum-plastic film and internal structure at the bottom of the battery cell 60, and improving the safety and stability of the battery.

[0052] Along the thickness direction of the cell 60, the width of the pad 50 is smaller than the thickness of the cell 60.

[0053] Preferably, the difference between the width of the gasket 50 and the thickness of the battery cell 60 is greater than or equal to 0.1 mm.

[0054] The width design of the gasket 60 effectively disperses the injection pressure while preventing interference with other components due to excessive size. The appropriate width of the gasket 60 ensures both buffering and pressure dispersion functions, as well as a reasonable layout and proper assembly of the battery components.

[0055] Along the length of the battery cell 60, the thickness of the gasket 50 is set in the range of 0.2mm-2mm.

[0056] The thickness setting range of the gasket 60 ensures that the gasket 60 has sufficient elasticity, effectively buffering pressure during glue injection, preventing the aluminum-plastic film from denting, and ensuring the compactness and stability of the overall battery structure.

[0057] In this preferred embodiment, the gasket 50 includes any elastic material such as a PC sheet, rubber pad, silicone sheet, foam sheet, or PET sheet. This allows for the relief of injection pressure through elastic deformation, preventing damage to the aluminum-plastic film and ensuring the battery's charging and discharging performance and safety.

[0058] This embodiment is a preferred embodiment, and the fixing structure of the gasket 50 has been optimized.

[0059] Specifically, a boss 21 extends from the bottom frame 20 toward the battery cell 60, opposite to the battery cell 60. The opposite ends of the boss 21 are connected to the first side frame 30 and the second side frame 40, respectively. The gasket 50 is connected to the opposite side of the boss 21 to the bottom of the battery cell 60.

[0060] Preferably, a first injection cavity is formed between the gasket 50 and the opposite surface of the bottom frame 20 and the battery cell 60. The adhesive injected into the first injection cavity is cured on the boss 21, and the adhesive injected into the first injection cavity is bonded and fixed to the gasket 50.

[0061] In this embodiment, a protrusion 21 is provided on the side of the bottom frame 20 opposite to the cell 60, so that the adhesive can be better filled and fixed to the bottom of the cell 60 after injection, preventing the adhesive from detaching from the bottom frame 20 and ensuring the stability of the adhesive during long-term use of the battery.

[0062] In this embodiment, a second injection cavity is formed between the first side frame 30 and the side wall of the battery cell 60, a third injection cavity is formed between the second side frame 40 and the side wall of the battery cell 60, and a fourth injection cavity is formed between the top frame 10 and the top of the battery cell 60. The second and third injection cavities are both connected to the first and fourth injection cavities.

[0063] The two ends of the gasket 50 are connected to the first side frame 30 and the second side frame 40 with gaps, so that the glue in the second glue injection cavity and the third glue injection cavity can be injected into the first glue injection cavity and flow along the first glue injection cavity.

[0064] This embodiment is a preferred embodiment, and the structure of the first side frame 30 and the second side frame 40 has been optimized.

[0065] In this embodiment, a plurality of first protrusions 31 extend from the inner wall of the first side frame 30 toward the battery cell 60, and the plurality of first protrusions 31 are equally spaced along the length direction of the first side frame 30.

[0066] In addition, along the width direction of the battery cell 60, a plurality of first glue injection holes 32 penetrating the first side frame 30 are provided on the first side frame 30, and the plurality of first glue injection holes 32 are equally spaced along the length direction of the first side frame 30.

[0067] Preferably, the cross-section of the first protrusion 31 is T-shaped along the thickness direction of the cell 60. The shape design of the first protrusion 31 strengthens the bonding between the adhesive and the first side frame 30, so that the adhesive forms a stronger connection structure after curing, thereby improving the overall sealing and stability of the battery.

[0068] In addition, along the width direction of the battery cell 60, a plurality of first glue injection holes 32 penetrating the first side frame 30 are provided on the first side frame 30, and the plurality of first glue injection holes 32 are equally spaced along the length direction of the first side frame 30.

[0069] Preferably, the first injection hole 32 and the first protrusion 31 are misaligned, so that the glue can be injected into the second injection cavity through the first injection hole 32. At the same time, in conjunction with the first protrusion 31, the glue can be better fitted with the first side frame 30, preventing the glue from separating from the first side frame 30, and ensuring the reliability and stability of the glue injection.

[0070] In some alternative embodiments, a plurality of second protrusions 41 extend from the inner wall of the second side frame 40 toward the cell 60, and the plurality of second protrusions 41 are equally spaced along the length direction of the second side frame 40.

[0071] Preferably, the cross-section of the second protrusion 41 is T-shaped along the thickness direction of the cell 60. The shape design of the second protrusion 41 strengthens the bonding between the adhesive and the second side frame 40, so that the adhesive forms a stronger connection structure after curing, thereby improving the overall sealing and stability of the battery.

[0072] In addition, along the width direction of the cell 60, a plurality of second glue injection holes 42 are provided on the second side frame 40, and the plurality of second glue injection holes 42 are equally spaced along the length direction of the second side frame 40.

[0073] Preferably, the second injection hole 42 and the second protrusion 41 are misaligned, which enables the glue to be injected into the third injection cavity through the second injection hole 42. At the same time, in conjunction with the second protrusion 41, the glue can be better fitted with the second side frame 40, preventing the glue from separating from the second side frame 40 and ensuring the reliability and stability of the glue injection.

[0074] Please see Figures 4-6 This utility model embodiment also provides a soft-pack battery.

[0075] This embodiment provides a soft-pack battery, including a cell 60 and a frame structure as described in any of the above embodiments. The cell 60 is housed in the cavity of the frame structure, and the bottom of the cell 60 is bonded and fixed to the gasket 50.

[0076] Specifically, the top of the battery cell 60 housed in the cavity is positioned opposite to the top frame 10, the bottom of the battery cell 60 is positioned opposite to the bottom frame 20, and the opposite side walls of the battery cell 60 are positioned opposite to the first side frame 30 and the second side frame 40, respectively.

[0077] A gasket 50, located on the opposite side of the bottom frame 20 to the battery cell 60, is bonded and fixed to the bottom of the battery cell 60. A PCB board 90 is located on the top of the battery cell 60, and the PCB board 90 is sealed to the top of the battery cell 60 with adhesive. This effectively protects the top sealing area of ​​the battery cell 60, preventing damage from external forces during production, transportation, and use, ensuring the sealing performance of the battery cell 60. It also facilitates the electrical connection between the PCB board 90 and the battery cell 60, reducing wiring length, lowering resistance loss, and improving the overall electrical performance of the battery. Simultaneously, it facilitates battery monitoring and control, enabling real-time monitoring of battery parameters such as voltage, current, and temperature, achieving precise control of the battery charging and discharging process, and extending battery life.

[0078] Given that a second injection cavity is formed between the first side frame 30 and the side wall of the battery cell 60, a third injection cavity is formed between the second side frame 40 and the side wall of the battery cell 60, and a fourth injection cavity is formed between the top frame 10 and the top of the battery cell 60, and the opposite ends of the gasket 50 are gap-connected to the first side frame 30 and the second side frame 40, the second and third injection cavities are both connected to the first and fourth injection cavities. The sequentially connected first, second, fourth, and third injection cavities form an injection cavity for accommodating the injection layer 70.

[0079] In addition, in this embodiment, a plurality of frame locking lugs 80 are provided around the perimeter of the frame structure, so that the soft-pack battery is fixed to the main unit by means of the frame locking lugs 80. The frame locking lugs 80 provide a stable connection between the battery and the main unit, ensuring that the battery is firmly fixed to the main unit, preventing the battery from shifting or falling off, and ensuring the relative position stability between the battery and the main unit.

[0080] Therefore, the soft-pack battery provided in this embodiment, by using the frame structure described in the above embodiment to fix the cell 60, effectively reduces the pressure of the adhesive on the aluminum-plastic film of the cell 60 during low-pressure adhesive injection of the soft-pack battery, reduces the risk of aluminum-plastic film dent, and thus better protects the internal structure of the cell.

[0081] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0082] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0083] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0084] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0085] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A frame structure for a pouch battery, used to accommodate a battery cell (60), characterized in that, It includes a top frame (10) and a bottom frame (20) arranged opposite to each other, and a first side frame (30) and a second side frame (40) arranged opposite to each other. The top frame (10), the first side frame (30), the bottom frame (20) and the second side frame (40) are connected end to end to form a cavity for accommodating the battery cell (60). The bottom frame (20) is arranged opposite to the bottom of the battery cell (60). A gasket (50) is provided on the side of the bottom frame (20) opposite to the battery cell (60). The gasket (50) is bonded and fixed to the bottom of the battery cell (60).

2. The frame structure of a soft-pack battery according to claim 1, characterized in that, The bottom frame (20) extends a boss (21) from the opposite side of the battery cell (60) toward the battery cell (60), and the gasket (50) is connected to the opposite side of the boss (21) to the bottom of the battery cell (60).

3. The frame structure of a soft-pack battery according to claim 2, characterized in that, A first injection cavity is formed between the gasket (50) and the bottom frame (20) opposite to the cell (60). The glue injected into the first injection cavity is cured on the boss (21) and the glue injected into the first injection cavity is bonded and fixed to the gasket (50).

4. The frame structure of a soft-pack battery according to claim 1, characterized in that, Along the width direction of the battery cell (60), the length of the pad (50) is the same as the width of the battery cell (60).

5. The frame structure of a soft-pack battery according to claim 1, characterized in that, Along the thickness direction of the battery cell (60), the width of the pad (50) is smaller than the thickness of the battery cell (60).

6. The frame structure of a soft-pack battery according to claim 1, characterized in that, Along the length of the battery cell (60), the thickness of the gasket (50) is set in the range of 0.2mm-2mm.

7. The frame structure of a soft-pack battery according to claim 1, characterized in that, The gasket (50) includes a PC sheet, a rubber gasket, a silicone sheet, a foam sheet, or a PET sheet.

8. The frame structure of a soft-pack battery according to claim 1, characterized in that, A plurality of first protrusions (31) extend from the inner wall of the first side frame (30) toward the battery cell (60), and the plurality of first protrusions (31) are equally spaced along the length direction of the first side frame (30). And / or, a plurality of second protrusions (41) extend from the inner wall of the second side frame (40) toward the cell (60), and the plurality of second protrusions (41) are equally spaced along the length direction of the second side frame (40).

9. The frame structure of a soft-pack battery according to claim 1, characterized in that, Along the thickness direction of the battery cell (60), a plurality of first glue injection holes (32) penetrating the first side frame (30) are provided on the first side frame (30), and the plurality of first glue injection holes (32) are equally spaced along the length direction of the first side frame (30). And / or, along the thickness direction of the cell (60), a plurality of second glue injection holes (42) penetrating the second side frame (40) are provided on the second side frame (40), and the plurality of second glue injection holes (42) are equally spaced along the length direction of the second side frame (40).

10. A pouch battery, characterized in that, Includes a battery cell (60) and a frame structure as described in any one of claims 1-9, wherein the battery cell (60) is housed in the cavity of the frame structure and the bottom of the battery cell (60) is bonded and fixed to the gasket (50).

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