Novel soft package battery

Abstract

The utility model relates to the technical field of batteries, and discloses a novel soft package battery which comprises a battery cell, two steel caps and a sleeve film, wherein one steel cap is arranged on the positive electrode of the battery cell in a covering manner, and the other steel cap is arranged on the negative electrode of the battery cell in a covering manner; and the sleeve film is arranged on the battery core in a sleeving manner and is arranged on the two steel caps in a sleeving manner. According to the novel soft package battery provided by the utility model, the positive electrode and the negative electrode of the battery cell are respectively covered with one steel cap, and then the sleeve film is used for sleeving, so that the extrusion resistance is improved, the potential damage of external pressure to the internal structure of the battery can be effectively resisted, and the problem of high-temperature scald during tab welding can be avoided; in addition, the soft package battery also has relatively high anti-falling capability, deformation and short circuit can be avoided even if a falling event occurs, and the soft package battery is beneficial to large-scale popularization and application of the soft package battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a novel soft-pack battery. Background Technology

[0002] Polymer lithium-ion batteries, also widely known in the industry as pouch lithium-ion batteries, have been widely and deeply used in various portable electronic devices, electric vehicles, and recharge systems and energy storage applications due to their outstanding characteristics, including lightweight design, large capacity storage, high energy density and no memory effect.

[0003] However, the external structure of currently available pouch batteries is generally quite simple, mainly consisting of barley paper, red and black adhesive, or a protective film. While this structure meets basic usage requirements to some extent, it also exposes several problems that urgently need to be addressed: First, its resistance to compression is poor, making it difficult to effectively resist potential damage to the internal structure of the battery from external pressure; second, during the tab welding process, the high temperature can easily burn the battery body, thereby threatening the overall safety and lifespan of the battery; third, in the face of physical impacts such as accidental drops, existing pouch batteries often cannot avoid the risk of deformation or even short circuits, which undoubtedly poses a safety hazard for the actual application of the product.

[0004] Given the aforementioned shortcomings, innovating and optimizing existing pouch battery technology has become a critical issue that the industry urgently needs to address.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a novel soft-pack battery to solve the problems existing in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel soft-pack battery includes a battery cell, two steel caps, and a protective film; wherein,

[0009] One of the steel caps is disposed on the positive terminal of the battery cell, and the other steel cap is disposed on the negative terminal of the battery cell;

[0010] The diaphragm is fitted over the battery cell and over the two steel caps.

[0011] Furthermore, the novel soft-pack battery also includes barley paper;

[0012] The barley paper is affixed to the steel cap corresponding to the positive electrode of the battery cell.

[0013] Furthermore, in the novel soft-pack battery, the cell is provided with tabs;

[0014] The steel cap has an outlet through which the electrode tab can pass.

[0015] Furthermore, in the novel soft-pack battery, the tab is arranged in a bent structure, including a main body, a first bent portion, and a second bent portion connected in sequence;

[0016] The main body is inserted through the outlet;

[0017] The first bent portion is disposed perpendicular to the main body portion;

[0018] The second bend is perpendicular to the first bend, and its extension direction is consistent with that of the main body.

[0019] Furthermore, in the novel soft-pack battery, the sleeve is a PVC sleeve.

[0020] Furthermore, in the novel soft-pack battery, the casing is coated with color and / or pattern.

[0021] Furthermore, the novel pouch battery also includes a transparent outer casing;

[0022] The battery cell is located inside the transparent casing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model provides a novel soft-pack battery. By covering the positive and negative electrodes of the battery cell with a steel cap and then using a protective film, it not only improves the resistance to compression and effectively resists potential damage to the internal structure of the battery from external pressure, but also avoids the problem of high-temperature burns during electrode welding, thus preventing threats to the overall safety and service life of the battery. In addition, it also has a high resistance to drops, preventing deformation and short circuits even in the event of a drop, which is conducive to the widespread application of soft-pack batteries.

[0025] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is an exploded view of the structure of a novel soft-pack battery provided in this embodiment of the present invention;

[0028] Figure 2 This is one of the three-dimensional structural (assembly) schematic diagrams of a novel soft-pack battery provided in this embodiment of the present invention;

[0029] Figure 3 This is the second three-dimensional structural (assembly) schematic diagram of a novel soft-pack battery provided in this embodiment of the present invention;

[0030] Figure 4 This is a side view schematic diagram of the structure (assembly) of a novel soft-pack battery provided by an embodiment of this utility model;

[0031] Figure 5 This is a bottom view of the structure (assembly) of a novel soft-pack battery provided in this embodiment of the present invention;

[0032] Figure 6 This is a top view schematic diagram of the structure (assembly) of a novel soft-pack battery provided in this embodiment of the utility model.

[0033] Figure label:

[0034] 1. Battery cell, 2. Steel cap, 3. Sheath, 4. Barley paper, 5. Electrode, 6. Export. Detailed Implementation

[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0038] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0039] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0040] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0041] In this application, expressions such as "greater than", "less than", and "exceeding" are understood to exclude the stated number; expressions such as "above", "below", and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times", unless otherwise explicitly specified.

[0042] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0044] In view of the deficiencies in the existing technology, the applicant, based on years of practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, has actively conducted research and innovation in order to create a technology that can solve the deficiencies in the existing technology. After continuous research, design, and repeated prototype production and improvement, this utility model with practical value has finally been created.

[0045] Please refer to Figure 1-6 This utility model provides a novel soft-pack battery, comprising a battery cell 1, two steel caps 2, and a protective film 3; wherein,

[0046] One of the steel caps 2 is placed over the positive terminal of the battery cell 1, and the other steel cap 2 is placed over the negative terminal of the battery cell 1, thereby ensuring that the positive and negative terminals of the battery cell are effectively protected.

[0047] The protective film 3 is fitted onto the battery cell 1 and onto the two steel caps 2, forming a complete protection system.

[0048] This invention, by installing steel caps 2 at both the positive and negative ends of the battery cell 1 and adding an outer sheath 3, not only significantly enhances the battery's resistance to compression, effectively resisting potential damage to the internal structure from various external pressures, but also cleverly solves the problem of burns caused by high temperatures during electrode welding, thus effectively maintaining the overall safety of the battery and extending its service life. More advancedly, this invention also exhibits excellent drop resistance, effectively preventing battery deformation or short circuits even in the event of drops or other accidents. This undoubtedly has a positive promoting effect on the wider application and promotion of soft-pack batteries in the future.

[0049] In one embodiment of this invention, the novel soft-pack battery further includes barley paper 4;

[0050] The barley paper 4 is affixed to the steel cap 2 corresponding to the positive electrode of the battery cell 1.

[0051] It should be noted that this design not only makes full use of the excellent insulation and protective properties of barley paper itself, but also further improves the electrical safety level of the positive electrode area of ​​the battery, effectively reducing potential risks such as electrical short circuits or electric shocks caused by external factors.

[0052] By introducing barley paper 4 and combining it with the previously described joint protection mechanism of steel cap 2 and sheath 3, the novel soft-pack battery in this embodiment achieves significant improvements in structural strength, electrical safety, and overall protection capabilities. This innovative design not only further enhances the reliability and stability of the battery in complex and changing usage environments but also lays a solid foundation for the application of soft-pack batteries in a wider range of fields in the future.

[0053] In one embodiment of this invention, the battery cell 1 is provided with tabs 5, a design intended to achieve effective connection between the battery cell and an external circuit.

[0054] The steel cap 2 has an outlet 6 through which the tab 5 can pass. The size and shape of the outlet 6 are precisely calculated to ensure that the tab 5 can pass through smoothly and securely.

[0055] It should be noted that this innovative design not only cleverly solves the problem of connecting tab 5 to the external circuit, but also further enhances the overall electrical connection stability and safety of the battery by wrapping and protecting tab 5 with steel cap 2. Furthermore, the precise fit between tab 5 and outlet 6 provides strong support for efficient energy transfer during charging and discharging.

[0056] In summary, the novel pouch battery in this embodiment, by introducing the tab 5 and the outlet 6 on the steel cap 2, not only achieves an effective connection between the battery cell and the external circuit, but also further improves the overall performance and safety of the battery, providing strong support for the application of pouch batteries in a wider range of fields.

[0057] In one embodiment of this invention, the electrode tab 5 is configured with a bent structure, including a main body, a first bent portion, and a second bent portion connected in sequence.

[0058] The main body is inserted through the outlet 6;

[0059] The first bent portion is disposed perpendicular to the main body portion;

[0060] The second bend is perpendicular to the first bend, and its extension direction is consistent with that of the main body.

[0061] It should be noted that the bent structure design of the positive and negative electrode tabs (5) perfectly adapts to the layout requirements of the PBC board (printed circuit board). This innovative design not only simplifies the complexity of battery assembly and soldering at the customer's site but also significantly improves soldering efficiency, estimated to be over 50%. This significant improvement not only reduces production costs but also accelerates product assembly, providing strong support for the rapid application of batteries in a wider range of fields.

[0062] In summary, the novel soft-pack battery in this embodiment, by introducing a bending structure design for the tab 5, not only optimizes the internal structure of the battery but also significantly improves the battery's installation and welding efficiency at the customer's site, laying a solid foundation for the widespread application of battery products.

[0063] In one embodiment of this example, the sleeve 3 is a PVC (polyvinyl chloride) sleeve.

[0064] It should be noted that PVC sheathing, with its excellent insulation properties, good flexibility, and weather resistance, is widely used in the field of battery encapsulation. In this embodiment, the PVC sheathing not only tightly wraps key components such as the battery cell 1 and the steel cap 2, providing all-round protection for the battery, but also effectively prevents external moisture, dust, and other impurities from corroding the internal structure of the battery due to its superior barrier properties.

[0065] In addition, the PVC sleeve has good processing performance, which allows for easy and precise size control and shape shaping during the manufacturing process, thereby ensuring a tight fit between the sleeve and the battery components and further improving the overall protection effect of the battery.

[0066] In summary, the novel pouch battery in this embodiment, by using a PVC sleeve as its external protective structure, not only enhances the battery's safety and reliability but also provides it with more robust protection in complex and ever-changing usage environments. This innovative design undoubtedly injects new vitality into the application of pouch batteries in a wider range of fields.

[0067] In one embodiment of this invention, the design of the cover 3 incorporates richer visual elements, specifically manifested in the fact that the cover 3 is sprayed with colors and / or patterns.

[0068] It should be noted that the color and / or graffiti sprayed on the film 3 can be changed depending on the product, with the main focus on exquisite and trendy appearance to enhance the user's experience and visual appeal.

[0069] It should be noted that this innovative design not only gives the battery product a more distinctive personality but also greatly enhances its aesthetic appeal and style. By flexibly adjusting the paint color and pattern on the film 3, the product's appearance can be easily diversified to meet the personalized and trendy aesthetic needs of different users.

[0070] More importantly, this design strategy also fully considers enhancing the user experience. The exquisite appearance and unique patterns not only attract users' attention but also bring visual pleasure, thereby increasing user liking and satisfaction with the product. This user-centric design philosophy undoubtedly wins more attention and recognition for battery products in the fierce market competition.

[0071] In summary, the novel soft-pack battery in this embodiment, by cleverly spraying colors and / or patterns onto the sleeve 3, not only enriches the visual appeal of the product but also significantly enhances the user experience and visual enjoyment, injecting new vitality into the market promotion and brand building of battery products.

[0072] In one embodiment of this invention, the design of the novel pouch battery has once again achieved a breakthrough upgrade. Specifically, the battery has added a transparent outer shell, and the battery cell 1 is cleverly placed inside the internal space of this transparent outer shell.

[0073] The introduction of a transparent casing undoubtedly gives battery products a completely new visual experience. Through this design, consumers can directly observe the internal structure and working principle of the battery. This unprecedented transparency not only enhances the product's visual appeal but also provides consumers with a new and unique experience.

[0074] Furthermore, the use of a transparent casing demonstrates this embodiment's profound understanding and pursuit of product innovation. While maintaining the battery's basic functions, the innovative design makes the product stand out among similar products, more easily attracting consumers' attention and thus enhancing its market competitiveness.

[0075] In summary, the novel soft-pack battery in this embodiment, through the innovative design of introducing a transparent outer shell, not only enhances the product's visual appeal and innovation but also brings consumers a unique experience, opening up new directions for the future development of battery products.

[0076] Although this application uses terms such as battery cell, steel cap, and sheath frequently, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0077] This utility model provides a novel soft-pack battery. By covering the positive and negative electrodes of the battery cell with a steel cap and then using a protective film, it not only improves the compression resistance and effectively resists potential damage to the internal structure of the battery from external pressure, but also avoids the problem of high-temperature burns during electrode welding, thus preventing threats to the overall safety and service life of the battery. In addition, it also has a high resistance to drops, preventing deformation and short circuits even in the event of a drop, which is conducive to the widespread application of soft-pack batteries.

[0078] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A novel soft-pack battery, characterized in that, It includes a battery cell (1), two steel caps (2), and a protective film (3); among which, One of the steel caps (2) is placed over the positive terminal of the battery cell (1), and the other steel cap (2) is placed over the negative terminal of the battery cell (1); The sheath (3) is fitted onto the battery cell (1) and onto the two steel caps (2).

2. The novel soft-pack battery according to claim 1, characterized in that, It also includes barley paper (4); The barley paper (4) is affixed to the steel cap (2) corresponding to the positive electrode of the battery cell (1).

3. The novel soft-pack battery according to claim 1, characterized in that, The battery cell (1) is provided with tabs (5); The steel cap (2) has an outlet (6) through which the electrode ear (5) can pass.

4. The novel soft-pack battery according to claim 3, characterized in that, The electrode (5) is configured with a bent structure, including a main body, a first bent part and a second bent part connected in sequence; The main body is inserted through the outlet (6). The first bent portion is disposed perpendicular to the main body portion; The second bend is perpendicular to the first bend, and its extension direction is consistent with that of the main body.

5. The novel soft-pack battery according to claim 1, characterized in that, The sleeve (3) is a PVC sleeve.

6. The novel soft-pack battery according to claim 1, characterized in that, The film (3) is sprayed with color and / or pattern.

7. The novel soft-pack battery according to claim 6, characterized in that, It also includes a transparent casing; The battery cell (1) is located inside the transparent casing.

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