CN216120604U - Bundling ribbon for battery module and battery module - Google Patents

Abstract

The utility model relates to a bundling ribbon for a battery module and the battery module. A plurality of connecting positions are uniformly distributed on the first connecting section at intervals along the length direction of the bundling ribbon, a plurality of connecting bodies are uniformly distributed on the second connecting section at intervals, and the distance between every two connecting bodies is consistent with that between every two connecting positions; the connecting body is connected with the connecting position in a clamping mode, and when the expansion force borne by the bundling ribbon reaches a preset value, the connecting body can break loose from the current connecting position and is clamped into the next adjacent connecting position. According to the binding belt for the battery module, the connecting position and the connecting body are clamped, the expansion force of the battery module reaches the preset value between the connecting position and the connecting body, and the connecting body can enter the next adjacent connecting position, so that the main body of the binding belt can be automatically adjusted when the expansion force of the battery module is too large, and the capacity of the binding belt for adapting to the expansion condition change of the battery module is improved.

Description

Bundling ribbon for battery module and battery module

Technical Field

The utility model relates to the technical field of battery assembly, in particular to a bundling ribbon for a battery module. In addition, the utility model also relates to a battery module.

Background

Along with the rapid development of the new energy automobile industry, the requirements of a whole automobile factory on the energy density and the structural strength of a battery module are higher and higher so as to match the requirements of a terminal user on high endurance and adaptation to various severe working conditions.

In the form that battery module is in groups to electric core, some adopt the casing, with electric core matched stack in the casing, form battery module, this kind of form causes the increase of battery module occupation space and self weight. Therefore, a plurality of battery cells are bundled into a battery module by adopting a bundling mode, and the battery module becomes a current important battery cell grouping mode.

At present, the holistic bundle form of battery module is mainly two kinds, and one kind is once only fastened and is bundled, and this fastening form is because of fastening tension earlier stage, and the battery module is after long-time the use to lead to the tension force that produces between every electric core and tie up fastening force conflict mutually, so that the battery module damages, lead to taking place danger. The other type is bound for reserving the space type of the expansion force, so that the pre-tightening force is not enough, the binding strength of the battery module is not enough, the battery module is not stable in fastening, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a bundling belt for a battery module, so as to improve the capability of the bundling belt to adapt to the expansion condition change when the bundled battery module expands.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a bundling ribbon for a battery module is used for bundling a plurality of battery cores into the battery module; the binding band comprises a band body, a first connecting section and a second connecting section, wherein the first connecting section and the second connecting section are positioned at two ends of the band body; along the length direction of the bundling ribbon, a plurality of connecting positions are uniformly distributed on the first connecting section at intervals, a plurality of connecting bodies are uniformly distributed on the second connecting section at intervals, and the distance between every two connecting bodies is consistent with that between every two connecting positions; the connecting body is connected with the connecting position in a clamping mode, and when the expansion force borne by the bundling ribbon reaches a preset value, the connecting body can break loose from the current connecting position and be clamped into the next adjacent connecting position.

Further, 1-4 connectors are arranged on the second connecting section; the number of the connection positions on the first connection segment is more than 5.

Furthermore, the connecting position is a clamping cavity integrally formed on the first connecting section, and a clamping inlet and a breaking-away opening are respectively formed at two ends of the connecting position in the length direction; the connector is a clamping block which can be clamped in the clamping cavity; the second connecting section is in a long strip shape and penetrates through the clamping inlet and the break-away opening of each clamping cavity; the clamping block is clamped into the clamping cavity through the clamping opening, and the current clamping cavity can be disengaged through the disengaging opening when the expansion force reaches a preset value.

Furthermore, the clamping block is spherical, and the clamping cavity is arranged along the shape of the clamping block.

Furthermore, the clamping cavity, the clamping inlet and the top opening of the break-away opening are arranged.

Furthermore, the connecting position is a clamping hole formed in the first connecting section, a through groove is communicated between two adjacent clamping holes, and two ends of the clamping cavity respectively form a clamping inlet and an escape opening of the clamping hole; the first connecting section and the second connecting section are arranged in a stacked mode, and the connecting body is a clamping block which is inserted and can be clamped in the clamping hole; the clamping block is clamped into the clamping hole through the clamping opening, and the current clamping hole can be disengaged through the disengaging opening when the expansion force reaches a preset value.

Furthermore, the width of the through groove at one end of the clamping opening is larger than that at one end of the break-away opening.

Furthermore, the distance between the connecting positions is 8-20 mm.

Further, the bundling ribbon is integrally formed by plastic in an injection molding mode.

Compared with the prior art, the utility model has the following advantages:

the bundling ribbon for the battery module adopts a connection mode that the connection positions arranged on the first connection section and the connection bodies arranged on the second connection section on the two ends of the ribbon main body are clamped, the bundling ribbon is allowed to loosen step by arranging a plurality of adjacent connection positions, the expansion change condition of the battery module is practical, the operation convenience is better, meanwhile, the position intervals between each connection body and each connection position are the same, when the expansion force reaches a preset value, the connection bodies can break away the connection positions to enter the next connection position, so that the ribbon main body can be automatically adjusted after the battery module is expanded, the phenomenon that the battery module is excessively fastened and restrained for a long time to cause the water jump of a battery cell is avoided, the endurance condition is shortened, and the service life of the battery module is prolonged.

Another objective of the present invention is to provide a battery module, which is formed by bundling a plurality of battery cells; the battery module is bundled by the bundling ribbon for the battery module. Compared with the prior art, the battery module has the technical advantages of the bundling ribbon.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model, and the description is given by way of example only and without limitation to the terms of relative positions. In the drawings:

fig. 1 is a schematic structural view of a battery module of a bundling band for a battery module according to a first embodiment of the present invention;

fig. 2 is a front view of a battery module of a bundling band for a battery module according to a first embodiment of the utility model;

fig. 3 is a schematic structural view illustrating a second coupling manner of a binding band for a battery module according to a first embodiment of the present invention;

fig. 4 is a front view of the battery module bundling strap of fig. 3;

description of reference numerals:

1. bundling a binding tape; 10. a band body;

2. a first connection section; 20. a connection bit; 21. a clamping cavity; 22. a clamping hole; 200. a through groove; 201. a card entrance; 202. breaking open;

3. a second connection section; 30. a linker; 300. a clamping block;

400. and (5) battery cores.

Detailed Description

In the description of the present invention, it should be noted that, if terms such as "upper", "lower", "inner", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are merely used for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus are not to be construed as limiting the present invention, and furthermore, if terms such as "first", "second", etc. are used for descriptive purposes only and are not to indicate or imply relative importance.

In addition, in the description of the present invention, the terms "mounted", "connected", "plugged" and "snapped" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example one

The utility model relates to a bundling ribbon for a battery module, which is used for bundling a plurality of battery cells 400 into the battery module, and one exemplary structure of the bundling ribbon is shown in fig. 1.

In a unitary structure, the banding band 1 includes a band body 10, and a first connecting section 2 and a second connecting section 3 at both ends of the band body 10. Along the length direction of the bundling ribbon 1, a plurality of connecting positions 20 are uniformly distributed on the first connecting section 2 at intervals, and a plurality of connecting bodies 30 are uniformly distributed on the second connecting section 3 at intervals. The pitch of each connecting body 30 is equal to the pitch of each connecting position 20; the connecting body 30 is connected with the connecting position 20 in a clamping manner, and when the expansion force borne by the bundling ribbon 1 reaches a preset value, the connecting body 30 can break away from the current connecting position 20 and be clamped into the next adjacent connecting position 20.

It should be noted that, the number of the connecting bodies 30 may be one or more, and when a plurality of connecting bodies 30 are provided, each connecting body 30 is connected to a plurality of adjacent connecting positions 20 in a one-to-one corresponding manner.

In addition, the preset value mentioned in this embodiment is the sum of the maximum tightening force that each connecting position 20 on the first connecting section 2 of the band main body 10 and each connecting body 30 on the second connecting section 3 can bear when being clamped, so that when the tightening force borne by the bundling band 1 reaches the preset value after the battery module is expanded, the connecting body 30 is separated from the current connecting position 20 and is clamped into the next connecting position 20 adjacent to the current connecting position 20, so that the bundling band 1 can be loosened to a certain extent, and the battery module can be given proper bundling force again.

During concrete implementation, through adopting a plurality of foretell connectors 30, a plurality of connection position 20 at ribbon main part 10, and adopt the joint form between the two corresponds, can improve the tight power that expands that joint department can bear between the two, and each connector 30 is unanimous with the position interval of each connection position 20, it is the regulation to be convenient for ribbon main part 10 to carry out automatic adaptation nature to battery module many times, after reaching the default to the tight power that expands that can realize battery module inflation to bundling ribbon 1 production, make connector 30 joint advance in current adjacent next connection position 20, increase bundling ribbon 1's suitability, in order to do benefit to battery module duration and life's improvement.

Based on the above general description, as a preferred embodiment, the second connecting section 3 is provided with 1-4 connecting bodies 30; the connection position 20 on the first linkage segment 2 is more than 5, through both joint forms to avoid the battery module in normal expansion range, because of the connector 30 is not enough with the number of connection position 20, lead to the bundle dynamics tension, thereby influence battery module life.

In specific implementation, the number of the connecting bodies 30 is preferably 3, the number of the connecting positions 20 is preferably 5, and the number and the positions of the connecting bodies 30 and the connecting positions 20 can be adjusted and arranged according to practical application.

Preferably, as shown in fig. 1 and fig. 2, the connecting position 20 is a clamping cavity 21 integrally formed on the first connecting section 2, and in the length direction of the bundling strap 1, both ends of the connecting position 20 are respectively provided with a clamping opening 201 and a break-away opening 202; the connecting body 30 is a clamping block 300 which can be clamped in the clamping cavity 21; the second connecting section 3 is strip-shaped and passes through the clamping openings 201 and the break-away openings 202 of the clamping cavities 21; the fixture block 300 is clamped into the clamping cavity 21 through the clamping opening 201, and can break loose the current clamping cavity 21 through the breaking-loose opening 202 when the expansion force reaches a preset value.

In specific implementation, as shown in fig. 1, the clamping inlets 201 and the breaking-away openings 202 on the connecting positions 20 are used for clamping the clamping blocks 300 into the clamping cavities 21 through the clamping inlets 201, and bundling the battery modules arranged in the ribbon main body 10, so as to achieve stability of the battery modules, meanwhile, the second connecting section 3 is strip-shaped and penetrates through the clamping cavities 21, so that after the battery modules expand, the battery modules reach the preset value of self expansion force of the ribbon main body 10, the clamping blocks 300 break away from the breaking-away openings 202 of the front clamping cavities 21, and then enter the next clamping cavity 21 adjacent to the front clamping cavity 21 through the clamping inlets 201, and release a certain bundling space, so as to meet the expansion requirement of the battery modules.

Meanwhile, as also shown in fig. 1, the latch 300 is preferably designed to be spherical, and the latching cavity 21 is formed following the outer shape of the latch 300. In specific implementation, preferably, the fixture block 300 is preferably spherical, and the clamping cavity 21 is adapted to the fixture block 300 along with the shape of the fixture block 300 and has a surrounding design, so that the clamping cavity 21 is clamped to the fixture block 300, and the binding force of the battery module is improved. In addition, the shape of the fixture block 300 may be various shapes such as a cylinder shape, so as to meet the clamping requirement of the fixture block 300 and the clamping cavity 21.

As another preferred mode, as shown in fig. 2, the top of the locking cavity 21, the locking opening 201 and the releasing opening 202 are open, that is, each locking cavity 21 is connected through, so as to achieve the effect of sequentially locking the locking block 300 and the locking cavity 21 from top to bottom, thereby ensuring the step-wise bundling of the battery modules and prolonging the service life thereof. Moreover, the open arrangement facilitates the assembly of the second connecting section 3 and the fixture block 300 thereof to the corresponding clamping cavity 21 from above, thereby facilitating the fastening operation of the bundling belt 1 during the bundling of the battery modules.

In addition to the above-described design of the connecting body 30 and the connecting point 20, other similar constructions can be used, as shown in fig. 3 for a second connection of the band body 10. It can be seen that the connecting position 20 is a fastening hole 22 formed on the first connecting section 2, a through groove 200 is communicated between two adjacent fastening holes 22, and two ends of the through groove 200 respectively form a fastening opening 201 and an escape opening 202 of the fastening hole 22. At this moment, the first connecting section 2 and the second connecting section 3 are stacked, and the connecting body 30 is a clamping block 300 which is inserted and can be clamped in the clamping hole 22. The latch 300 is latched into the latch hole 22 through the latching opening 201, and can be disengaged from the current latch hole 22 through the disengaging opening 202 when the expansion force reaches a preset value.

In specific implementation, for convenience of processing, the connection position 20 is formed by integrally forming the first connection section 2 with the fastening hole 22, and as can be seen from fig. 4, the fastening block 300 is cylindrical, the fastening hole 22 is in a shape of a water drop which is adapted to the fastening block 300 and is from top to bottom, so as to stabilize the fastening state of the fastening block and the fastening hole, and the through groove 200 is formed between each fastening hole 22, so that the fastening block 300 can be conveniently separated from the current fastening hole 22 to enter the next adjacent fastening hole 22 through the second connection section 3.

Meanwhile, referring to fig. 3, the first connecting section 2 and the second connecting section 3 are stacked to increase the friction force between the two contact surfaces, so as to increase the binding force for large-scale battery modules and prevent the battery modules from scattering.

During operation, the battery module is placed on the band main body 10, the first connecting section 2 and the second connecting section 3 are tensioned and overlapped, the band main body 10 is fastened with a proper binding force, and the clamping block 300 is enabled to be inserted into the clamping hole 22.

As shown in fig. 4, in order to further facilitate the expansion of the battery cell 400 and then adjust the ribbon main body 10, and to provide a suitable bundling force for the battery module, the width of the through slot 200 at one end of the card entrance 201 is greater than the width at one end of the break-away opening 202, so as to ensure the clamping strength of the card hole 22 to the card block 300, facilitate the bundling of the battery cell 400, and facilitate the break-away of the card block 300 to enter the next card hole 22. Preferably, the distance between the connection positions 20 is 8-20 mm, so that the battery cell 400 is easy to process, and is suitable for the situation of adjusting the change of the bundling size each time after the battery cell 400 is expanded.

For the convenience of processing, the bundling ribbon 1 is integrally formed by plastic in an injection molding mode, so that the bundling ribbon is convenient to process and manufacture, and the cost is saved. Moreover, each clamping hole 22 can have a certain connecting force, and after the clamping block 300 passes through the clamping hole, the deformation performance meets the clamping and breaking-free requirements.

In addition, first linkage segment 2 and the second linkage segment 3 on the ribbon main part 10 still can adopt other hard materials, like iron etc. can change the form and the dynamics size of bundling battery core 400 module according to practical application.

The bundling ribbon 1 for the battery module has better operation convenience by adopting a connection mode that the connection positions 20 arranged on the first connection section 2 and the connection bodies 30 arranged on the second connection section 3 on the two ends of the ribbon main body 10 are clamped. Simultaneously, each connector 30 is the same with the position interval arrangement between each connection position 20, and after the tight power of expanding reached the default, connector 30 can realize struggling to break away connection position 20 and get into next connection position 20, so that ribbon main part 10 carries out the automaticity after the battery module expands tightly and adjusts, avoid it to the long-time fixed constraint of battery module, lead to electric core 400 diving, shorten the condition of continuation of the journey, improved the ability that the bundle ribbon adapts to battery module inflation condition and changes, do benefit to the life who increases the battery module.

Example two

The present embodiment relates to a battery module having the bundling rolling band, which includes the bundling rolling band 1 described in the first embodiment, the bundling rolling band 1 is used for initially bundling the whole battery module, and at least one bundling rolling band may be disposed on the battery module to facilitate the fixation of the whole battery module.

As a preferred embodiment, 3 bundling rolling bands 1 are preferably arranged on the battery module, so as to avoid that, after the center of the battery core 400 expands, an excessive space is formed in the bundling rolling band 1 at the center position, which causes the bundling rolling band 1 to separate from the battery module, and the bundling rolling band 1 cannot work normally, and the specific bundling manner can be adjusted according to actual conditions.

In the battery module according to the embodiment, the bundling rolling bands 1 are uniformly arranged on the battery module, so that the bundling force of the expanded battery module can be adjusted in an automatic manner after the battery module is used for a long time, and the service life of the battery module is prolonged.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A bundling strap for a battery module is used for bundling a plurality of battery cells (400) into the battery module; the method is characterized in that:

the bundling ribbon (1) comprises a ribbon main body (10), and a first connecting section (2) and a second connecting section (3) which are positioned at two ends of the ribbon main body (10);

along the length direction of the bundling ribbon (1), a plurality of connecting positions (20) are uniformly distributed on the first connecting section (2) at intervals, a plurality of connecting bodies (30) are uniformly distributed on the second connecting section (3) at intervals, and the distance between each connecting body (30) is consistent with that between each connecting position (20);

the connecting body (30) is connected with the connecting position (20) in a clamping mode, and when the expansion force borne by the bundling ribbon (1) reaches a preset value, the connecting body (30) can break loose from the current connecting position (20) and can be clamped into the next adjacent connecting position (20).

2. The banding band for battery modules as claimed in claim 1, wherein:

1-4 connecting bodies (30) are arranged on the second connecting section (3);

the number of the connecting positions (20) on the first connecting section (2) is more than 5.

3. The banding band for battery modules as claimed in claim 1, wherein:

the connecting position (20) is a clamping cavity (21) integrally formed on the first connecting section (2), and a clamping inlet (201) and a break-away opening (202) are respectively formed at two ends of the clamping cavity (21) in the length direction;

the connecting body (30) is a clamping block (300) which can be clamped in the clamping cavity (21);

the second connecting section (3) is long and penetrates through the clamping inlet (201) and the break-away opening (202) of each clamping cavity (21);

the clamping block (300) is clamped into the clamping cavity (21) through the clamping inlet (201), and the current clamping cavity (21) can be disengaged through the disengaging opening (202) when the expansion force reaches a preset value.

4. The banding band for battery modules as claimed in claim 3, wherein:

the fixture block (300) is spherical, and the clamping cavity (21) is arranged along the shape of the fixture block (300).

5. The banding band for battery modules as claimed in claim 3, wherein:

the clamping cavity (21), the clamping inlet (201) and the top of the break-open port (202) are arranged in an open mode.

6. The banding band for battery modules as claimed in claim 1, wherein:

the connecting positions (20) are clamping holes (22) formed in the first connecting section (2), a through groove (200) is communicated between every two adjacent clamping holes (22), and two ends of the through groove (200) respectively form a clamping opening (201) and a breaking-out opening (202) of each clamping hole (22);

the first connecting section (2) and the second connecting section (3) are arranged in a stacked mode, and the connecting body (30) is a clamping block (300) which is inserted and can be clamped in the clamping hole (22);

the clamping block (300) is clamped into the clamping hole (22) through the clamping inlet (201), and can break loose from the breaking-loose opening (202) to the current clamping hole (22) when the expansion force reaches a preset value.

7. The banding band for a battery module as claimed in claim 6, wherein:

the width of the through groove (200) at one end of the card inlet (201) is larger than that at one end of the break-away opening (202).

8. The banding band for battery modules as claimed in any one of claims 1 to 7, wherein:

the distance between the connecting positions (20) is 8-20 mm.

9. The banding band for a battery module as claimed in claim 8, wherein:

the bundling ribbon (1) is integrally formed by plastic in an injection molding mode.

10. A battery module is formed by bundling a plurality of battery cells (400); characterized in that the battery module is bundled using the bundling band for a battery module according to any one of claims 1 to 8.

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