Battery assembly structure

Abstract

The utility model provides a battery assembly structure which comprises a battery module formed by mutually overlapping a plurality of single batteries along a first direction, and a first forming module, a first supporting module and a second forming module which are sequentially connected to an electrical connecting end in an abutting manner, the first forming module is fixedly connected with the battery module and the head of the battery module through the fixed connecting sleeve, the first forming module and the second forming module are oppositely connected with the battery module in a matched mode in the first direction, and the first supporting module abuts against the portion between the end face of the first forming module and the end face of the second forming module. According to the battery assembly structure, the structural connection of the electrical connection end of the head part of the battery assembly structure is well shaped, supported and protected, and the battery assembly structure has relatively high electrical connection stability; and meanwhile, the overall appearance shape of the battery module can be effectively improved, and integrated connection molding between the head of the battery module and the overall battery module is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery assembly structure. Background Art

[0002] With the continuous development of new energy technology, the application of lithium-ion batteries is becoming more and more extensive. The requirements for the appearance and size of lithium-ion battery modules during use are becoming more and more stringent. At present, the battery module heads on the market are supported by foam filling, and then fixed with highland barley paper and fiber glue. The use of foam soft material will cause the head shape to be irregular, unstable and easy to deform during the assembly process, and will occupy a large part of the space size of the battery module head, making the assembly operation troublesome and affecting production efficiency.

[0003] For example, the utility model patent with announcement number CN220628082U discloses a blade lithium battery module structure, in which the right battery cell of the battery cell module is overlapped in the thickness direction in a superimposed manner, and the positive and negative pole ears are installed on one side of the battery cell to connect with the cable, and a spacer layer is arranged on the contact surface of the ear. The foam material used for the spacer layer includes but is not limited to foam strips. By fixing the battery cell module structure with a heat shrink film, the weight of the lithium battery module structure is fully reduced. However, the disadvantage is that the head electrical connection of the blade lithium battery module is connected and spaced by flexible materials such as foam, which is easily deformed and displaced by bumps during the assembly production process or in actual use, thereby impairing the electrical connection stability of the battery module. Utility Model Content

[0004] In view of the above technical problems, the purpose of the utility model is to overcome the above technical defects and provide a battery assembly structure, whose head electrical connection end has high electrical connection stability, realizes the integrated connection between the battery module head and the battery module as a whole, and at the same time improves the square appearance of the battery pack.

[0005] The stability of the electrical connection of the battery module is improved.

[0006] Based on the above technical objectives, the utility model is achieved through the following technical solutions:

[0007] A battery assembly structure comprises a battery module composed of a plurality of battery cells stacked relatively along a first direction, wherein one end of the battery module is arranged as an electrical connection end, wherein a first molding module, a first supporting module and a second molding module are sequentially connected to the electrical connection end, the first molding module abuts against the end face of the electrical connection end along an inner end face, and is cooperatively connected to the side of the electrical connection end along two opposite inner side faces, the first supporting module abuts between the end faces of the first molding module and the second molding module, and the second molding module is cooperatively connected to the side of the battery module along two opposite inner side faces.

[0008] Optionally, the first molding module and the second molding module are respectively formed by folding a folding panel as a whole, the folding panel includes an end panel, and side panels connected to opposite sides of the end panel, the side panel is extended along an end surface direction of the end panel, and the first and second molding modules are respectively connected to the opposite side surfaces of the battery module and its electrical connection end through the side panels.

[0009] Optionally, the first supporting module includes a supporting panel, and the supporting panel is abutted and connected between end panels of the first forming module and the second forming module.

[0010] Optionally, a fixed connection sleeve is further disposed along the side of the first molding module, and the first molding module is fixedly connected to the battery module via the fixed connection sleeve.

[0011] Optionally, the battery cell is provided with a pole ear along one end, a convex step portion is provided between the pole ear and the battery cell, and a second support module is connected between the convex step portions of two adjacent battery cells to achieve connection stability of the electrical connection end.

[0012] Optionally, the battery module is provided with a first connecting portion and a second connecting portion on opposite sides in a first direction, and the opposite inner sides of the first molding module are correspondingly connected to the first connecting portion, and the opposite inner sides of the second molding module are correspondingly connected to the second connecting portion.

[0013] Optionally, the battery module is provided with side panels on two opposite sides along the first direction, and the first connecting portion and the second connecting portion are provided on the side panels.

[0014] Optionally, the first molding module and the first connecting portion, as well as the second molding module and the second connecting portion, are fixedly connected by adhesive backing.

[0015] Optionally, the electrical connection end is connected to a charging plug and a discharging plug through electric wires along the side of the second direction.

[0016] Optionally, a packaging shell is further included, and the battery module, the first molding module, the first supporting module and the second molding module are wrapped and integrated by the packaging shell.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects through the above technical solution:

[0018] (1) After the electrical connection end of the battery module head completes the electrical connection and insulation treatment between the tab and the charge and discharge wire, the first molding module is used to fix and shape the electrical connection end of the battery module head, and the second molding module is used to achieve an integral connection between the battery module head and the battery module as a whole, thereby improving the structural connection stability of the battery module as a whole. The first supporting module is used to achieve effective abutment between the first molding module and the second molding module along the end surface direction on the electrical connection end of the battery module head, thereby playing a good role in strengthening support and force bearing;

[0019] (2) The structural connection method among the battery module, the first molding module, the first supporting module and the second molding module can improve the structural connection stability of the electrical connection end of the battery module head, and can also effectively improve the overall appearance of the battery module and reduce the length and size of the battery module, thereby increasing the storage capacity of the battery module. In addition, this assembly method can save materials and labor hours, thereby reducing costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a battery module in a specific implementation mode of the utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the battery module in a specific implementation mode of the utility model;

[0022] Figure 3 In the specific implementation of the utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0023] Figure 4 This is a schematic diagram of the structural decomposition of a battery pack in a specific embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the structural decomposition of the electrical connection in a specific implementation manner of the utility model.

[0025] Figure numerals: 1, battery module; 10, packaging shell; 11, battery cell; 110, electrical connection terminal; 111, pole ear; 112, convex step portion; 13, charging plug; 14, discharge plug; 21, first molding module; 22, second molding module; 23, first supporting module; 24, fixed connecting sleeve; 25, second supporting module; 26, insulating tape; 201, end panel; 202, side panel; 230, supporting panel; 15, side panel; 16, bottom plate; 101, first connecting portion; 102, second connecting portion. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0027] Combined with Figure 1-5 As shown, the utility model provides a battery assembly structure, including a battery module 1, a first molding module 21, a first supporting module 23 and a second molding module 22 connected in sequence, the battery module 1 is composed of a plurality of battery cells 11 stacked one on another along a first direction, the battery module 1 is provided with an electrical connection terminal 110 along one end head, the first molding module 21 and the second molding module 22 are relatively connected to the battery module 1 along the first direction, the electrical connection terminal 110 is connected to a charging plug 13 and a discharging plug 14 through a wire lead-out side along the second direction, it should be noted that the battery cell 11 can be but not limited to a square flat soft pack battery, the first direction is the width direction of the battery cell 11 ( The first direction is the thickness direction, and the second direction is the length direction of the battery cell 11. Specifically, the first molding module 21 is abutted against the end face of the electrical connection terminal 110 along the inner end face, and is matched and connected with the side of the electrical connection terminal 110 along two relatively inner side faces. The electrical connection terminal 110 is located between the first molding modules 21. One end face of the first supporting module 23 is abutted against the first molding module 21, and the other end face is abutted against the second molding module 22. The first supporting module 23 is abutted between the end faces of the first molding module 21 and the second molding module 22. The second molding module 22 is matched and connected with the side of the battery module 1 along two relatively inner side faces. The battery module 1 is located between the second molding modules 22.

[0028] When the battery module 1 is assembled, after the electrical connection and insulation treatment between the tab 111 and the charge and discharge wire of the electrical connection terminal 110 of the battery module 1 is completed, the first molding module 21 is first assembled to complete the fixed molding of the electrical connection terminal 110 of the battery module 1. The first molding module 21 realizes positioning connection with the side of the electrical connection terminal 110 through the inner side surface. The electrical connection terminal 110 is surrounded by the first molding modules 21 to prevent the electrical connection terminal 110 from being deformed or distorted by external force collision or electrical connection damage during the assembly process, thereby well protecting the connection stability of the electrical connection terminal 110. Then, the first supporting module 23 is assembled and abutted against the outer end face of the first molding module 21 away from the electrical connection end 110, and then the second molding module 22 is assembled and abutted against the end face of the first supporting module 23 away from the first molding module 21. The second molding module 22 is positioned and connected to the side of the battery module 1 through the inner side face. The first supporting module 23 strengthens the abutting connection between the end faces of the first molding module 21 and the second molding module 22. The battery module 1 is entirely surrounded by the second molding modules 22, thereby realizing the integrity of the structural connection between the electrical connection end 110 and the battery module 1.

[0029] As an embodiment, the first molding module 21 and the second molding module 22 are respectively formed by folding a folding panel as a whole, the folding panel includes an end panel 201, and side panels 202 connected to opposite sides of the end panel 201, the side panel 202 is vertically extended along an end surface direction of the end panel 201, wherein the extension distance of the side panel 202 of the first molding module 21 is less than that of the second molding module 22, the side panel 202 of the second molding module 22 extends to the end of the battery module 1 away from the electrical connection end 110, and the side panel 202 and The length distance of the battery cells 11 is equal, the end panel 201 is equal in size to the end face of the battery module 1, the first support module 23 includes a support panel 230, the support panel 230 is equal in size to the end panels 201 of the first and second molding modules 22, and the support panel 230 is abutted and connected between the end panels 201 of the first molding module 21 and the second molding module 22. Specifically, the first molding module 21, the first support module 23 and the second molding module 22 are all made of sheets with a certain toughness such as PET, which are processed and folded according to the size of the battery pack.

[0030] As another embodiment, the first support module 23 is configured as an elastic panel, the size of the elastic panel is equal to the size of the end panel 201, an elastic surface piece is provided in the middle of the elastic panel, and the elastic surface piece and the elastic panel are integrally connected, thereby realizing a buffering support protection function for the electrical connection end 110 of the battery module 1 to prevent falling.

[0031] As an embodiment, the first molding module 21 is further provided with a fixed connection sleeve 24 along the side. The first molding module 21 further strengthens the fixed connection with the battery module 1 along the second direction (that is, the length direction of the battery cell 11) through the fixed connection sleeve 24, thereby preventing the stacked battery cells 11 from falling out along the side.

[0032] As an embodiment, the battery module 1 is provided with side panels 15 on opposite sides along the first direction (i.e., the thickness direction of the battery cell 11), and the side panels 15 are provided with a first connecting portion 101 and a second connecting portion 102 along the up-down direction. The two opposite inner side surfaces of the first molding module 21 are correspondingly connected to the first connecting portion 101, and the two opposite inner side surfaces of the second molding module 22 are correspondingly connected to the second connecting portion 102. The inner side surfaces of the first and second molding modules 22 are respectively connected to the first and second connecting portions 102 by adhesive backing, and the battery module 1 is also provided with a base plate 16 along the bottom.

[0033] As another embodiment, the inner sides of the first molding module 21 and the second molding module 22 are respectively provided with a snap-in block or a snap-in groove, and the first connecting portion 101 and the second connecting portion 102 of the side panel 15 are correspondingly provided with a snap-in groove or a snap-in block. The first molding module 21 and the first connecting portion 101, as well as the second molding module 22 and the second connecting portion 102 are snap-fitted and connected to each other through the snap-in block and the snap-in groove structure, thereby realizing the fixed connection of the first and second molding modules 22 on the battery module 1. As an embodiment, a battery cell 11 is provided with positive and negative pole tabs 111 along one end, and a plurality of stacked battery cells 11 are electrically connected in series and / or in parallel through the tabs 111 to form an electrical connection end 110 of a battery module 1. An insulating strip 26 is provided at the upper portion of the electrical connection end 110 of the battery module 1 where the tab 111 is connected to the wire, and a convex step portion 112 is provided between the tab 111 and the battery cell 11. A second support module 25 is connected between the convex step portions 112 of two adjacent battery cells 11. The second support module 25 may be, but is not limited to, foam. The second support module 25 is provided below the electrical connection between the tab 111 and the wire to play a role of flexible support to achieve connection stability of the electrical connection end 110.

[0034] As an embodiment, it also includes a packaging shell 10, preferably the packaging shell 10 is a thermoplastic film, and the first molding module 21, the first supporting module 23 and the second molding module 22 are wrapped and integrated by the thermoplastic film. Of course, as other embodiments, an assembled hard shell can also be used, and the charging plug 13 and the discharging plug 14 extend along the side of one end of the packaging shell 10 through electric wires.

[0035] The specific implementation methods described above provide a more in-depth explanation and introduction of the technical solutions and beneficial effects of the utility model. The above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any similar modifications, equivalent substitutions, etc. made within the creative spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A battery assembly structure, comprising a battery module (1) composed of a plurality of battery cells (11) stacked relative to each other along a first direction, wherein one end of the battery module (1) is provided as an electrical connection end (110), characterized in that: The electrical connection end (110) is connected in sequence to a first molding module (21), a first supporting module (23) and a second molding module (22); the first molding module (21) abuts against an end face of the electrical connection end (110) along an inner end face and is cooperatively connected to a side portion of the electrical connection end (110) along two opposite inner side faces; the first supporting module (23) abuts between end faces of the first molding module (21) and the second molding module (22); and the second molding module (22) abuts against a side portion of the battery module (1) along two opposite inner side faces.

2. A battery assembly structure according to claim 1, characterized in that: The first forming module (21) and the second forming module (22) are respectively formed by folding a folding panel as a whole, the folding panel comprising an end panel (201) and side panels (202) connected to opposite sides of the end panel (201), the side panels (202) extending along an end surface direction of the end panel (201).

3. A battery assembly structure according to claim 2, characterized in that: The first supporting module (23) comprises a supporting panel (230), wherein the supporting panel (230) is abutted and connected between the end panels (201) of the first forming module (21) and the second forming module (22).

4. A battery assembly structure according to claim 3, characterized in that: The first molding module (21) is also provided with a fixed connection sleeve (24) along the side, and the first molding module (21) is fixedly connected to the battery module (1) via the fixed connection sleeve (24).

5. A battery assembly structure according to claim 1, characterized in that: The battery cell (11) is provided with a pole ear (111) along one end, a convex step portion (112) is provided between the pole ear (111) and the battery cell (11), and a second support module (25) is connected between the convex step portions (112) of two adjacent battery cells (11) to achieve connection stability of the electrical connection end (110).

6. A battery assembly structure according to claim 1, characterized in that: The battery module (1) is provided with a first connecting portion (101) and a second connecting portion (102) on two opposite sides in a first direction; two opposite inner side surfaces of the first molding module (21) are correspondingly connected to the first connecting portion (101); and two opposite inner side surfaces of the second molding module (22) are correspondingly connected to the second connecting portion (102).

7. A battery assembly structure according to claim 6, characterized in that: The battery module (1) is provided with side plates (15) on two opposite sides along a first direction, and the first connecting portion (101) and the second connecting portion (102) are provided on the side plates (15).

8. A battery assembly structure according to claim 6, characterized in that: The first molding module (21) and the first connecting portion (101), as well as the second molding module (22) and the second connecting portion (102), are fixedly connected by adhesive bonding.

9. A battery assembly structure according to claim 1, characterized in that: The electrical connection end (110) is connected to a charging plug (13) and a discharging plug (14) via electric wires along the side of the second direction.

10. A battery assembly structure according to claim 1, characterized in that: It also comprises a packaging shell (10), wherein the battery module (1), the first molding module (21), the first supporting module (23) and the second molding module (22) are wrapped and arranged as a whole through the packaging shell (10).

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