CN220553547U - Battery pack - Google Patents

Abstract

The present utility model provides a battery pack, comprising: the box body is provided with a first limiting structure; the electric energy storage part is provided with a second limiting structure protruding towards the first limiting structure, and the electric energy storage part is limited in the box body through mortise-tenon fit between the second limiting structure and the first limiting structure so as to realize the limiting of the electric energy storage part in the horizontal direction of the box body; and the pressing structure presses the second limiting structure downwards, so that the electric energy storage part is limited in the box body in the vertical direction perpendicular to the horizontal direction. The embodiment of the application adopts first limit structure, second limit structure mortise-tenon joint cooperation and support and press the structure to support the piezoelectric energy storage piece downwards to realize that the electric energy stores the steady setting of piece in each direction, and then realize that the electric energy stores the steady setting of piece in the box, owing to above-mentioned mortise-tenon joint cooperation, can effectively reduce the use of bolt, and then simplified the overall structure of battery package and promoted the group's efficiency of battery package.

Description

Battery pack

Technical Field

The utility model belongs to the technical field of power batteries, and particularly relates to a battery pack.

Background

In the current industry, the battery module of battery package adopts a plurality of bolts to fix with the battery box mostly, and wherein the bolt quantity that needs is many, and installation time is long, and production and manufacturing cost are high to the bolt often appears torsion attenuation's condition in the use, leads to the structure of battery package loose, and is unstable, not only influences the overall stability of battery package, but also influences the group efficiency of battery package.

Disclosure of Invention

In view of the problems in the related art, it is an object of the present utility model to provide a battery pack to at least achieve reduced use of bolts in order to improve the grouping efficiency of the battery pack.

To achieve the above object, the present utility model provides a battery pack comprising: the box body is provided with a first limiting structure; the electric energy storage part is provided with a second limiting structure protruding towards the first limiting structure, and the electric energy storage part is limited in the box body through mortise-tenon fit between the second limiting structure and the first limiting structure so as to realize the limiting of the electric energy storage part in the horizontal direction of the box body; and the pressing structure presses the second limiting structure downwards, so that the electric energy storage part is limited in the box body in the vertical direction perpendicular to the horizontal direction.

In some embodiments, the pressing structure comprises: the box limiting structure is arranged on the inner side wall of the box and protrudes towards the electric energy storage piece, the pressing plate is suitable for pressing downwards to the second limiting structure, and the box limiting structure is suitable for pressing downwards to the pressing plate.

In some embodiments, the second limiting structure is formed on an outer sidewall of the electrical energy storage member to form a containing space with the box limiting structure, and the pressing plate plug is pressed between the box limiting structure and the second limiting structure in the containing space in a limiting manner.

In some embodiments, the second spacing structure comprises: the plurality of strip-shaped panels extend along the length direction of the electric energy storage piece, are respectively arranged at two sides of the width direction of the electric energy storage piece and are respectively in concave-convex fit limit with the corresponding first limit structure.

In some embodiments, the strip panel has a mating notch distributed along a length direction thereof, the first limiting structure is disposed on an inner sidewall of the case and extends along the length direction of the case, and the first limiting structure has a limiting tab distributed along an extending direction thereof, and the limiting tab is adapted to be mated with the mating notch for limiting.

In some embodiments, the abutment plate is adapted to press down against the abutment plate on the strip panel on both sides of said mating notch.

In some embodiments, the end of the abutment plate is removably secured to the housing.

In some embodiments, the case restraint structure is a plurality of tabs distributed along the length of the case and offset from the restraint tabs in the direction of distribution.

In some embodiments, the strip panel is further provided with a relief groove for relief of the tab.

In some embodiments, an electrical energy storage device comprises: a single battery module or a collection of multiple battery modules.

The beneficial technical effects of the utility model are as follows:

the embodiment of the application adopts first limit structure, second limit structure mortise-tenon joint cooperation and support and press the structure to support the piezoelectric energy storage spare downwards to realize that the electric energy stores the steady setting of spare in each direction, and then realize that the electric energy stores the steady setting of spare in the box, owing to above-mentioned mortise-tenon joint cooperation, can effectively reduce the use of bolt, and then simplified the overall structure of battery package, with the whole cost of reduction battery package, and still effectually promoted the group efficiency of battery package.

Drawings

Fig. 1 illustrates a partial structure exploded view of a battery pack according to an embodiment of the present application.

Fig. 2 shows a partial structure plan view of the battery pack.

Fig. 3 shows an enlarged view of the area a in fig. 2.

Fig. 4 shows a cross-sectional view taken along line B-B of fig. 2.

Fig. 5 shows a perspective view of the case.

Fig. 6 shows a top view of the case.

Reference numerals illustrate:

case 10, case limit structure 12, first limit structure 14, electric energy storage element 20, second limit structure 22, outer side wall 25, pressing plate 30, pressing structure 32, accommodation space 40, blind rivet 50, battery pack 100, tab 120, limit tongue 140, first bar-shaped panel 221, second bar-shaped panel 222, avoiding groove 224, pressing plate 226, fitting notch 228, and opening 229.

Detailed Description

For a better understanding of the spirit of embodiments of the present application, reference is made to the following description of some preferred embodiments of the present application.

Embodiments of the present application will be described in detail below. Throughout the specification, identical or similar components and components having identical or similar functions are denoted by similar reference numerals. The embodiments described herein with respect to the drawings are of illustrative nature, of diagrammatic nature and are used to provide a basic understanding of the present application. The examples of the present application should not be construed as limiting the present application.

As used herein, the terms "substantially," "substantially," and "about" are used to describe and illustrate minor variations. When used in connection with an event or circumstance, the terms can refer to instances where the event or circumstance occurs precisely and instances where it occurs to the close approximation.

In this specification, unless specified or limited otherwise, relative terms such as: the terms "central," "longitudinal," "lateral," "front," "rear," "right," "left," "interior," "exterior," "lower," "upper," "horizontal," "vertical," "above," "below," "upper," "lower," "top," "bottom," and derivatives thereof (e.g., "horizontally," "downwardly," "upwardly," etc.) should be construed to refer to the directions as described in the discussion or as illustrated in the drawings. These relative terms are for convenience of description only and do not require that the present application be constructed or operated in a particular orientation.

For ease of description, "first," "second," "third," etc. may be used herein to distinguish between different components of a figure or series of figures. The terms "first," "second," "third," and the like are not intended to describe corresponding components.

Fig. 1 illustrates a partial structure exploded view of a battery pack 100 according to an embodiment of the present application, fig. 2 illustrates a partial structure top view of the battery pack 100, fig. 3 illustrates an enlarged view of a region a of fig. 2, fig. 4 illustrates a sectional view taken along a line B-B of fig. 2, fig. 5 illustrates a perspective view of the case 10, and fig. 6 illustrates a top view of the case 10. The present application provides a battery pack 100, comprising: the electric energy storage device comprises a box body 10, an electric energy storage part 20 and a pressing structure 32, wherein the box body 10 is provided with a first limiting structure 14; the electric energy storage element 20 has a second limit structure 22 protruding towards the first limit structure 14, wherein the electric energy storage element 20 is limited in the case 10 by a mortise-tenon fit (preferably a convex-concave fit) between the second limit structure 22 and the first limit structure 14, so as to realize limit of the electric energy storage element 20 in the horizontal direction of the case 10 [ limit along the length direction (i.e., X-axis direction) and the width direction (i.e., Y-axis direction) of the electric energy storage element 20 ]; the pressing structure 32 presses the second limiting structure 22 downward, so that the electric energy storage element 20 is limited in the case 10 in a vertical direction (along a height direction (i.e., Z-axis direction) of the electric energy storage element 20) perpendicular to the horizontal direction.

The pressing structure 32 includes: the box limiting structure 12 is arranged on the inner side wall of the box 10 and protrudes towards the electric energy storage piece 20, the pressing plate 30 is suitable for pressing the second limiting structure 22 downwards, and the box limiting structure 12 is suitable for pressing the pressing plate 30 downwards. The first limiting structure 14 is formed on the inner sidewall of the case 10, and the second limiting structure 22 protrudes toward the inner sidewall of the case 10. The second limiting structure 22 is disposed on the outer sidewall 25 of the electrical energy storage member 20, the box limiting structure 12 and the second limiting structure 22 are vertically spaced apart to form a containing space 40 therebetween, and the pressing plate 30 is plugged in the containing space 40, so that the second limiting structure 22 is pressed between the box limiting structure 12 and the second limiting structure 22 in a limiting manner, and the box limiting structure 12 is pressed upwards and the second limiting structure 22 is pressed downwards. In other embodiments, the second limiting structure 22 may be disposed on the top edge or the bottom edge of the electrical energy storage device 20, so long as the second limiting structure 22 protrudes toward the inner sidewall of the case 10, and the electrical energy storage device 20 may be fixed in cooperation with the second limiting structure 22 and the pressing plate 30.

Fig. 1 to 6 show an electrical energy storage device 20 as comprising one battery module comprising an electrical cell and a frame surrounding the electrical cell, wherein the outer side wall 25 refers to the outer side wall of the frame facing the inner side wall of the housing 10, and the second limit structure 22 is integrally formed with the outer side wall 25 of the electrical energy storage device 20. In other embodiments, electrical energy storage device 20 may comprise a collection of battery modules, and may further comprise a shroud surrounding the plurality of battery modules, where the outer sidewall refers to an outer sidewall of the shroud that faces an inner sidewall of case 10. In other embodiments, the electric energy storage member 20 may be a collection of a plurality of battery modules, for example, when the electric energy storage member 20 includes 4 battery modules, the case 10 may further include beams extending in the X-axis direction and the Y-axis direction to form a cross beam, each battery module is located in 4 sections of the cross beam, each battery module may have the second limiting structure 22 located on the outer sidewall as shown in the embodiment of fig. 1 to 6, and the first limiting structure 14 and the case limiting structure 12 as shown in the embodiment of fig. 1 to 6 may also be located on the sidewall of the cross beam.

The second limiting structure 22 includes a plurality of bar-shaped panels (for example, a first bar-shaped panel 221 and a second bar-shaped panel 222, fig. 1 only shows the second bar-shaped panel 222, fig. 2 shows the first bar-shaped panel 221 and the second bar-shaped panel 222), each bar-shaped panel 221, 222 extends along the length direction (i.e., the X-axis direction) of the electric energy storage member 20, the upper and lower surfaces of the first bar-shaped panel 221 and the second bar-shaped panel 222 are parallel to the upper and lower surfaces of the electric energy storage member 20, and the plurality of bar-shaped panels 221, 222 are disposed on both sides of the width direction (i.e., the Y-axis direction) of the electric energy storage member 20 in a separated manner and are respectively in concave-convex fit limit with the corresponding first limiting structure 14. The strip-shaped panels 221 and 222 are provided with matching notches 228 distributed along the length direction, the first limiting structure 14 is arranged on the inner side wall of the box body 10 and extends along the length direction of the box body 10, the first limiting structure 14 is provided with limiting convex tongues 140 distributed along the extending direction, and the limiting convex tongues 140 are suitable for being matched and limited with the matching notches 228. When the limit tab 140 cooperates with the mating notch 228 to limit, the pressing plate 30 is adapted to press the limit tab 140 downward together with the pressing plates on both sides of the mating notch 228 on the strip panel.

The strip-shaped panels 221, 222 each have a pressing piece 226 protruding from the outer side wall 25 of the electric energy storage element 20 toward the inner side wall of the case 10, the pressing pieces 226 being located at both sides of the fitting notch 228, and the pressing piece 30 pressing the second limiting structure 22 by pressing the pressing pieces 226 downward. The strip-shaped panels each have a plurality of pressing pieces 226 spaced apart from each other along the length direction of the electrical energy storage member 20, that is, in the extending direction of the strip-shaped panels, the matching notches 228 and the pressing pieces 226 are alternately distributed, for example, 12 pressing pieces 226 and 6 matching notches 228 are provided on the first strip-shaped panel 221 shown in fig. 1, wherein the spacing tabs 140 of the first spacing structure 14 are in one-to-one correspondence with the matching notches 228, 6 spacing tabs 140 corresponding to the 6 matching notches 228 shown in fig. 1 are provided on the upper side and the lower side of fig. 6, the shape of the matching notches 228 is jogged with the shape of the spacing tabs 140, and the matching notches 228 and the spacing tabs 140 are jogged together to form the above-mentioned concave-convex matching, so that in fig. 4, the space filled by the spacing tabs 140 is the matching notches 228 of the second spacing structure 22. The hole periphery of the fitting notch 228 is broken to form an opening 229, and the opening 229 is opened toward the inner side wall of the case 10. The case limiting structure 12 is a plurality of protruding pieces 120 distributed along the length direction of the case 10 and offset from the limiting tongue 140 in the distribution direction. The strip panels 221, 222 are also provided with relief grooves 224 for relief of the tabs 120. A plurality of tabs 120 are integrally formed on the inside wall of the case 10 and project toward the electrical energy storage 20. When the electrical energy storage device 20 is assembled with the case 10, the tab 120 of the case restraint structure 12 is higher than the abutment piece 226 of the second restraint structure 22 in the vertical direction, and the accommodating space 40 (filled by the abutment piece 30 in fig. 4) is formed between the tab 120 and the abutment piece 226. The case limiting structure 12 and the case 10 may be an integral piece, i.e. the tab 120 and the case 10 are an integral piece.

When assembling electrical energy storage device 20 and case 10 together, electrical energy storage device 20 is first placed in case 10, and tabs 120 do not obstruct downward movement of electrical energy storage device 20 because of offset tabs 226 and tabs 120; when the electric energy storage element 20 is located in the box body 10, the first limiting structure 14 (the limiting convex tongue 140) of the box body 10 is in convex-concave fit with the matching notch 228, that is, the limiting convex tongue 140 is just embedded into the matching notch 228, so that the position of the electric energy storage element 20 in the XY direction is limited and fixed; when the electrical energy storage device 20 is located in the casing 10, since the protruding sheet 120 is higher than the pressing sheet 226, and the accommodating space 40 is formed between the two, the pressing sheet 30 is plugged into the accommodating space 40, at this time, the pressing sheet 30 presses down the second limiting structure 22 (pressing sheet 226) and the first limiting structure 14 (limiting tab 140), and the casing limiting structure 12 also presses down the pressing sheet 30, that is, the pressing sheet 30 plugged into the accommodating space 40 is in an extrusion state of extruding the protruding sheet 120 upwards and extruding the pressing sheet 226 and the limiting tab 140 downwards, for example, referring to fig. 3, the pressing sheet 30 can be firstly placed on the second limiting structure 22 beside the casing limiting structure 12 (at the lower side in fig. 3), and then the pressing sheet 30 is plugged into/pushed into the accommodating space 40, so as to complete the limiting fixation of the electrical energy storage device 20 in the Z direction; the pressing plate 30 is a limiting pressing plate extending along the length direction (i.e. the X-axis direction) of the electric energy storage member 20, the bottom surface of the limiting pressing plate presses the second limiting structure 22 downwards, after the limiting pressing plate is plugged between the box limiting structure 12 and the second limiting structure 22, a self-plugging rivet (a rivet nut and a rivet stud can be used to avoid the torsion attenuation problem) 50 is used to fixedly connect two ends of the box 10 and the limiting pressing plate, and the self-plugging rivet 50 further limits the pressing plate 30 in the X-axis direction and the Y-axis direction on the basis that the pressing plate 30 is limited in the Z-axis direction of the box limiting structure 12 and the second limiting structure 22. That is, the end of the pressing plate 30 is detachably fixed to the case 10.

The embodiment of the application adopts first limit structure 14, second limit structure 22 to carry out the spacing of XY direction with tenon fourth of twelve earthly branches cooperation mode to electric energy storage piece 20 module to support pressure structure 32 downwards to support the spacing in order to carry out the Z direction of electric energy storage piece 20, need not use the bolt in the spacing of XY direction at least, reduced the use of bolt among the prior art's the scheme. Further, the embodiment of the application adopts the cooperation of box limit structure 12, second limit structure 22, butt clamp plate 30 to carry out spacing on the Z direction to electric energy storage piece 20 module, still need not use the bolt on the spacing of Z direction further, need not use the bolt just can be spacing fixed in box 10 with electric energy storage piece 20, reduced the use of rivet nut and bolt among the scheme of prior art, avoided the structure that leads to because of using the bolt loose, unstable problem. The production process is optimized without bolts, so that the problems of slow beat and long time of bolting during production are solved, the production efficiency is improved, the production and manufacturing cost is reduced, the problem of torsion attenuation of bolts is avoided, and the safety and the reliability are improved.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A battery pack, comprising:

the box body is provided with a first limiting structure;

the electric energy storage part is provided with a second limiting structure protruding towards the first limiting structure, wherein the electric energy storage part is limited in the box body through mortise-tenon fit between the second limiting structure and the first limiting structure, so that the electric energy storage part is limited in the horizontal direction of the box body; and

and the pressing structure presses the second limiting structure downwards, so that the electric energy storage part is limited in the box body in the vertical direction perpendicular to the horizontal direction.

2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the pressing structure comprises: the box limiting structure is arranged on the inner side wall of the box and faces the electric energy storage part to protrude, the pressing plate is suitable for being pressed downwards to press the second limiting structure, and the box limiting structure is suitable for being pressed downwards to press the pressing plate.

3. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the second limit structure is formed on the outer side wall of the electric energy storage part to form a containing space with the box body limit structure,

the pressing plate is plugged in the accommodating space and pressed between the box body limiting structure and the second limiting structure in a limiting clamping manner.

4. The battery pack of claim 2, wherein the battery pack comprises a plurality of battery cells,

the second limit structure includes: the strip-shaped panels are respectively arranged on two sides of the electric energy storage part in the width direction and are respectively in concave-convex fit limit with the corresponding first limit structure.

5. The battery pack of claim 4, wherein the battery pack comprises a plurality of battery cells,

the strip-shaped panel is provided with matching notches distributed along the length direction,

the first limit structure is arranged on the inner side wall of the box body and extends along the length direction of the box body, the first limit structure is provided with limit protruding tongues distributed along the extending direction of the first limit structure, and the limit protruding tongues are suitable for being matched with the matched notch for limiting.

6. The battery pack of claim 5, wherein the battery pack comprises a plurality of battery cells,

the pressing plate is suitable for pressing downwards against the pressing plates on two sides of the matched notch on the strip-shaped panel.

7. The battery pack according to any one of claims 2 to 6, wherein,

the end part of the pressing plate is detachably fixed with the box body.

8. The battery pack according to claim 5 or 6, wherein,

the box body limiting structure is a plurality of protruding pieces which are distributed along the length direction of the box body and are staggered with the limiting protruding tongues in the distribution direction.

9. The battery pack of claim 8, wherein the strip panel is further provided with a relief groove for relieving the tab.

10. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the electrical energy storage member includes: a single battery module or a collection of multiple battery modules.