CN219393617U - Box structure and battery pack - Google Patents

Abstract

The utility model relates to the technical field of batteries, in particular to a box structure and a battery pack. The box structure includes: a bottom plate; the side beams are positioned on two sides of the bottom plate along the third direction and are fixedly connected with the bottom plate; the movable beam is movably connected with the side beam; a side fixing beam fixed to the side beam, the side fixing beam being adapted to guide the movable beam to move in a direction approaching or departing from the bottom plate; and when the movable beam is connected with the side fixed beam, the movable beam is restricted from moving along the direction parallel to the bottom plate. According to the box structure provided by the utility model, the side fixing beams are fixed on the side beams, so that the side fixing beams are suitable for guiding the movable beams to move along the direction approaching to or separating from the bottom plate; when the movable beam is connected with the side fixed beam, the movable beam is limited to move along the direction parallel to the bottom plate; therefore, the movable beam can be limited by the side fixed beam, the situation that the movable beam is misplaced due to the fact that the battery expansion force acts on the movable beam is avoided, and the overall structural strength is improved.

Description

Box structure and battery pack

Technical Field

The utility model relates to the technical field of batteries, in particular to a box structure and a battery pack.

Background

Plug connectors are typically provided on the battery pack to facilitate electrical connection of the battery cells to external circuitry. Taking the case that the plug connector is arranged on the front panel of the battery pack as an example, when the plug connector is installed, special torsion fixing equipment is often adopted to install the plug connector in order to improve the installation efficiency. In the installation process, the torsion fixing equipment needs to occupy a certain internal space of the battery pack and is dismantled after the installation is completed, if a larger space is reserved for the plug connector, the internal space of the battery pack is compressed, and the energy density is low; if no space is reserved for the plug, this results in a low installation efficiency.

Through setting up the fly beam, at battery package installation, use the fixed equipment of turning round to install the plug connector earlier, after demolishing the fixed equipment of turning round, through the suitable position installation fly beam that is close to the front panel to practice thrift battery package inner space, improve volume utilization. But the movable beam is difficult to fix in the battery pack, the battery can bulge in the box body after repeated charge and discharge, and the expansion force acts on the movable beam to cause dislocation of the movable beam, so that the reliability of the battery pack is reduced.

Disclosure of Invention

Therefore, the utility model aims to overcome the defect that the movable beam is difficult to fix in the battery pack and easy to misplace in the prior art, and further provides a box structure and the battery pack, wherein the box structure is convenient for fixing the movable beam and can prevent the movable beam from misplacement.

In order to solve the above technical problems, the present utility model provides a box structure, including:

a bottom plate;

a front panel connected to the base plate;

the side beams are positioned on two sides of the bottom plate along the length direction of the front panel and are fixedly connected with the bottom plate;

the movable beam is movably connected with the side beam on at least one side; the movable beam has a first state in which it encloses a mounting cavity with the front panel, and a second state at least partially remote from the front panel.

The battery pack provided by the utility model comprises:

a tank structure as described above;

the movable beam is suitable for dividing the box body structure into two spaces, wherein one space is suitable for placing a connector, and the other space is suitable for placing a battery;

the large surface of the battery is parallel to the movable beam.

The technical scheme of the utility model has the following advantages:

1. according to the box structure provided by the utility model, the side fixing beams are fixed on the side beams, so that the side fixing beams are suitable for guiding the movable beams to move along the direction approaching to or separating from the bottom plate; and when the movable beam is connected with the side fixed beam, limiting the movable beam to move along the direction parallel to the bottom plate; therefore, the movable beam can be limited by the side fixed beam, the situation that the movable beam is misplaced due to the fact that the battery expansion force acts on the movable beam is avoided, and the overall structural strength is improved.

2. According to the box structure provided by the utility model, the movable beam is connected with the side fixed beam in an inserting way, so that the movable beam is conveniently constructed into a detachable mode, the space requirement of the installation of the inserting piece is met, the movable beam can be conveniently installed in an inserting way, the movable beam is convenient to align, and the function of pre-positioning can be realized.

3. According to the box body structure provided by the utility model, the bottom cross beam is arranged on the bottom plate, and the bottom abdication cavity is formed on one side of the movable beam, which faces the bottom plate, so that the bottom cross beam is suitable for being accommodated in the bottom abdication cavity, the movable beam is limited to move along the direction parallel to the bottom plate, the fixing strength of the movable beam can be further enhanced, and the situation that the movable beam is misplaced due to the action of the battery expansion force on the movable beam is avoided.

4. According to the box structure provided by the utility model, the movable beam is provided with the mounting hole, and the bottom cross beam is provided with the fixing part corresponding to the mounting hole; and then the fixing piece passes through the mounting hole to realize fixed connection with the fixing part so as to limit the movable beam to move in a direction away from the bottom cross beam. Thereby realize the fixed to the fly beam with the help of the bottom crossbeam, avoided the fly beam with the condition that the bottom plate adopted bolted connection takes place, guaranteed the gas tightness of bottom plate.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the structure of the case of the present utility model;

FIG. 2 is a schematic view of the structure of the box body with the movable beam in an exploded state;

FIG. 3 is a schematic cross-sectional view of the case structure of the present utility model;

FIG. 4 is a cross-sectional view of the box structure of the walking beam of the present utility model in an exploded state;

FIG. 5 is a schematic cross-sectional view of the walking beam of the present utility model in an exploded state, parallel to the plane of the walking beam;

fig. 6 is an enlarged view of the side fixing beam of the present utility model.

Reference numerals illustrate:

1-shell, 11-front panel, 12-side beam, 2-movable beam, 21-side cavity of stepping down, 22-supporting part, 23-mounting hole, 24-bottom cavity of stepping down, 3-side fixed beam, 31-hollow cavity, 4-bottom crossbeam, 41-limit part, 42-fixed part, 5-bottom plate.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1, a mounting position for mounting the plug connector is reserved on the front panel 11, and in order to improve the mounting efficiency of the plug connector, a special torsion fixing device is often used for mounting the plug connector. In the installation, the fixed torsion equipment needs to occupy certain battery package inner space, through setting up the fly beam, in battery package installation, use fixed torsion equipment installation plug connector earlier to demolish fixed torsion equipment after the plug connector installation is accomplished, install the fly beam in suitable position that is close to the front panel afterwards, need not to reserve solitary space of placing for fixed torsion equipment, thereby practice thrift battery package inner space, improve volume utilization. However, the movable beam is difficult to fix in the battery pack, and particularly, the battery can bulge in the box body after being repeatedly charged and discharged for a long time, and the expansion force acts on the movable beam to cause dislocation of the movable beam, so that the reliability of the battery pack is reduced. The utility model can effectively avoid the dislocation of the movable beam by reasonably arranging the mounting structure of the movable beam 2, and the utility model is described in detail below.

Example 1

Referring to fig. 1 to 6, the box structure provided in this embodiment includes:

a bottom plate 5;

a front panel 11 connected to the bottom plate 5;

side beams 12 located on both sides of the bottom plate 5 along the length direction of the front panel 11 and fixedly connected to the bottom plate 5;

a movable beam 2 movably connected to at least one side of the side member 12; the movable beam 2 has a first state in which it encloses a mounting cavity with the front panel 11, and a second state at least partially remote from the front panel 11.

As an alternative implementation form, the movable beam 2 may also be rotatably connected to the side member 12 on one side thereof, and selectively fixedly connected to the side member 12 on the other side when the movable beam 2 is parallel to the front panel 11. Optionally, the movable beam 2 is rotatably connected with the side beam 12 on one side through a hinge or a hinge, so that the movable beam 2 can rotate relative to the side beam 12; further, the movable beam 2 can be fixed by means of pins or buckles, so that the movable beam 2 has a first state of enclosing a mounting cavity with the front panel 11 and a second state of being at least partially far from the front panel 11.

As another alternative implementation form, the movable beam 2 is connected to the side beams 12 on both sides in a clamping or plugging manner, and the movable beam 2 can be inserted into and removed from the side beams 12, and this implementation form will be described in detail below with reference to the accompanying drawings. Specifically, the box structure further includes: a side fixed beam 3 fixed to at least one of the side members 12, the movable beam 2 being adapted to move or rotate with respect to the side fixed beam 3.

In particular, the side fixed beams 3 are adapted to guide the movable beam 2 to move in a direction approaching or moving away from the bottom plate 5; and restricts the movable beam 2 from moving in a direction parallel to the bottom plate 5 when the movable beam 2 is connected to the side fixed beam 3.

The bottom plate 5 is located at a relatively lower portion of the box structure along the height direction, and in this embodiment, the second direction shown in fig. 1 is the height direction. The bottom plate 5 can serve as a support for the battery.

The side beams 12 extend from the upper surface of the bottom plate 5 in a second direction toward a direction away from the bottom plate 5, and the side beams 12 are fixedly connected with the bottom plate 5, and a specific fixing mode can be welding.

Referring to fig. 1, taking the example that the number of the side beams 12 is two, the two side beams 12 are respectively arranged at two sides of the bottom plate 5 along the third direction, the two side beams 12 are spaced apart, the side fixing beams 3 are respectively arranged on the surfaces of the two side beams 12 close to each other, and the movable beam 2 is arranged between the two side beams 12. As a variant, the number of the side beams 12 may be plural, and the number of the corresponding movable beams 2 may be plural, so that those skilled in the art may reasonably set according to actual needs, which is not described herein.

The movable beam 2 is detachably connected with the side beams 12, and further, the side fixing beams 3 are respectively arranged on the surfaces, close to the two side beams 12, of the movable beam 2, the side fixing beams 3 extend along the second direction, or the side fixing beams 3 extend along the direction forming an acute angle with the second direction, and the movable beam 2 is connected with the side fixing beams 3 in an inserting mode in parallel, so that the movable beam 2 moves along the direction close to or far away from the bottom plate 5, when the movable beam 2 and the side fixing beams 3 are in an inserting mode, the side fixing beams 3 can block the movable beam 2 from moving along the first direction, the limiting effect on the movable beam 2 is achieved, and therefore the situation that the movable beam is dislocated due to the action of battery expansion force on the movable beam is avoided.

The box structure provided by the embodiment is characterized in that the side fixing beams 3 are fixed on the side beams 12, so that the side fixing beams 3 are suitable for guiding the movable beams 2 to move along the direction approaching or separating from the bottom plate 5; and restricts the movable beam 2 from moving in a direction parallel to the bottom plate 5 when the movable beam 2 is connected to the side fixed beam 3; therefore, the movable beam 2 can be limited by the side fixed beam 3, the situation that the movable beam is misplaced due to the fact that the battery expansion force acts on the movable beam is avoided, and the overall structural strength is improved.

Optionally, the length of the movable beam 2 is less than or equal to the size of the interval between the side beams 12 on both sides. And the sum of the length of the movable beam 2 and the width of the side fixed beams 3 on both sides is larger than the dimension of the side members 12 on both sides at intervals.

Optionally, the side fixing beams 3 and the side beams 12 on both sides are fixedly connected by welding.

The box structure further comprises a front panel 11, the front panel 11 is arranged on one side of the box structure along the first direction, the front panel 11 extends from the upper surface of the bottom plate 5 along the second direction towards the direction far away from the bottom plate 5, and two ends of the front panel 11 along the third direction are respectively connected with the side beams 12 on two sides; correspondingly, the box structure further comprises a rear panel, which is connected by a circle around, so as to form the housing 1.

Optionally, in this embodiment, the box structure is formed by extrusion of an aluminum profile.

Preferably, in this embodiment, the movable beam 2 is disposed parallel to the front panel 11, and a gap is reserved between the movable beam 2 and the front panel 11 along a first direction, so as to place components such as conductive wires and conductive terminals.

In particular, the movable beam 2 is connected with the side fixed beam 3 in a plug-in manner.

The box structure that this embodiment provided makes fly beam 2 with the grafting of side fixed beam 3 is connected, conveniently constructs fly beam 2 for detachable form, satisfies the space requirement of plug connector installation, and adopts the mode of pegging graft can be convenient for the installation of fly beam 2, and the convenience is aligned, and can play the effect of prepositioning.

Specifically, a side relief cavity 21 is formed on the movable beam 2 at a position corresponding to the side fixing beam 3, and the side fixing beam 3 is accommodated in the side relief cavity 21.

Alternatively, as shown in fig. 2 and 3, the movable beam 2 may be formed by two plates arranged in parallel and at intervals, and the area between the two plates of the movable beam 2 and on both sides of the movable beam 2 along the length direction is adapted to form the side relief cavity 21.

The side fixing beam 3 is accommodated in the side abdication cavity 21, namely, the side fixing beam 3 is positioned between two plates of the movable beam 2. And the movable beam 2 forms an opening corresponding to the bottom area of the side abdication cavity 21 along the second direction, so that the movable beam 2 and the side fixed beam 3 are convenient to be inserted and connected.

Specifically, the number of the side fixing beams 3 is two, and the two side fixing beams 3 are respectively provided on opposite sides of the two side beams 12; the side relief cavities 21 are located on both sides of the movable beam 2 in the third direction.

Specifically, the bottom plate 5 includes a heat exchange plate; the box structure further includes:

a bottom cross member 4 fixedly connected to the floor panel 5, the bottom cross member 4 extending from the side member 12 on one side toward the side member 12 on the other side;

the movable beam 2 is formed with a bottom abdication cavity 24 on a side facing the bottom plate 5, and the bottom cross beam 4 is adapted to be accommodated in the bottom abdication cavity 24 so as to limit the movable beam 2 to move along a direction parallel to the bottom plate 5.

The box structure that this embodiment provided is through setting up bottom crossbeam 4 on bottom plate 5 to be formed with the bottom chamber of stepping down 24 in the movable beam 2 orientation one side of bottom plate 5, thereby make bottom crossbeam 4 be suitable for hold in the bottom is stepping down the intracavity 24, with the restriction movable beam 2 is along being on a parallel with the direction of bottom plate 5 removes, can further strengthen the fixed strength of movable beam, avoids the battery expansion force to act on the movable beam and leads to the condition emergence of dislocation of movable beam to take place.

The side fixing beams 3 can strengthen the structural strength of the movable beam 2 on both sides in the length direction, and the bottom cross beam 4 can strengthen the structural strength of the movable beam 2 in the height direction, particularly the structural strength of the movable beam 2 at the bottom in the height direction.

As shown in fig. 3 and 4, the movable beam 2 may be formed by two plates arranged in parallel and spaced apart, and the bottom of the movable beam 2 along the second direction and the area between the two plates of the movable beam 2 are adapted to form the bottom abdication cavity 24. The bottom cross member 4 is adapted to be received in the bottom relief cavity 24, i.e. the bottom cross member 4 is located between two plates of the movable beam 2.

Specifically, the movable beam 2 is provided with a mounting hole 23, and the bottom cross beam 4 is provided with a fixing part 42 corresponding to the mounting hole 23;

the fixing member is adapted to be fixedly connected to the fixing portion 42 through the mounting hole 23 to restrict the movable beam 2 from moving in a direction away from the bottom cross member 4.

The bottom plate 5 comprises a heat exchange plate, and because the heat exchange plate is of a cavity structure, cooling liquid is led in the middle, if the movable beam 2 is connected with the bottom plate 5 by adopting movable bolts, the tightness of the bottom plate 5 can be affected, and the embodiment is characterized in that the bottom cross beam 4 is arranged on the bottom plate 5, so that the movable beam 2 is fixed through the bottom cross beam 4, and the bolting of the movable beam 2 with the bottom plate 5 is avoided.

Alternatively, the bottom cross member 4 and the heat exchange plate may be fixedly connected by welding.

In the case structure provided in this embodiment, the movable beam 2 is provided with the mounting hole 23, and the bottom beam 4 is formed with the fixing portion 42 corresponding to the mounting hole 23; the fixed connection with the fixing portion 42 is then achieved by the fixing member passing through the mounting hole 23 to restrict the movable beam 2 from moving in a direction away from the bottom cross member 4. Thereby realizing the fixation of the movable beam 2 by means of the bottom cross beam 4, avoiding the occurrence of the condition that the movable beam 2 is connected with the bottom plate 5 by bolts, and ensuring the air tightness of the bottom plate 5.

Alternatively, the fixing member may be a bolt.

Alternatively, the movable beam 2 may be formed with a plurality of mounting holes 23, and the bottom cross member 4 may be formed with a plurality of fixing portions 42, respectively.

Specifically, as shown in fig. 6, the side fixing beam 3 has a hollow cavity 31 formed therein, and the fixing member is adapted to pass through the mounting hole 23 and the hollow cavity 31 in sequence and to be fixed to the fixing portion 42.

By forming the hollow cavity 31 in the side fixing beam 3, it is possible to facilitate the passage of the bolts through the mounting holes 23 and the hollow cavity 31, and finally, the fixing portion 42. The side fixed beams 3, the movable beams 2 and the bottom cross beams 4 are mutually connected, and the fixing strength is improved.

Specifically, a supporting portion 22 is further disposed in the movable beam 2, and a lower surface of the supporting portion 22 is adapted to abut against an upper surface of the bottom cross beam 4.

The extending direction of the supporting portion 22 is parallel to the length direction of the movable beam 2, so that on one hand, the reinforcing effect on the structural strength of the movable beam 2 can be achieved, and on the other hand, the supporting effect on the movable beam 2 can be achieved by means of contact between the lower surface of the supporting portion 22 and the upper surface of the bottom cross beam 4, and the movable beam 2 is conveniently limited in the height direction.

As shown in fig. 5, a plurality of supporting parts 22 may be disposed between two plates of the movable beam 2, so as to strengthen the structural strength of the movable beam 2.

Optionally, as shown in fig. 3 and fig. 4, the bottom cross beam 4 is further formed with a limiting portion 41, where the limiting portion 41 can abut against the bottom edge of at least one plate of the movable beam 2, so as to perform a movement limiting function on the movable beam 2 along the height direction.

Specifically, the extending direction of the side fixing beam 3 is perpendicular to the bottom plate 5.

By arranging the extension direction of the side fixing beam 3 perpendicular to the bottom plate 5, the movable beam 2 is conveniently installed along the direction perpendicular to the bottom plate 5.

Example two

The present embodiment provides a battery pack including:

the case structure according to the first embodiment;

and the battery pack is arranged in the box body structure.

According to the battery pack provided by the embodiment, the side fixing beams 3 are fixed on the side beams 12, so that the movable beams 2 can be limited by the side fixing beams 3, the situation that the movable beams are misplaced due to the action of battery expansion force on the movable beams is avoided, and the overall structural strength is improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (11)

1. A box structure, comprising:

a bottom plate (5);

a front panel (11) connected to the bottom plate (5);

the side beams (12) are positioned on two sides of the bottom plate (5) along the length direction of the front panel (11) and are fixedly connected with the bottom plate (5);

a movable beam (2) movably connected with the side beam (12) on at least one side; the movable beam (2) has a first state in which it encloses a mounting cavity with the front panel (11), and a second state at least partially remote from the front panel (11).

2. The case structure according to claim 1, further comprising:

-a side fixed beam (3), at least to one of which side beam (12) said movable beam (2) is adapted to move or rotate with respect to said side fixed beam (3).

3. -the box structure according to claim 2, characterized in that said side fixed beams (3) are adapted to guide the movement of said movable beams (2) in a direction approaching or moving away from said bottom plate (5); and when the movable beam (2) is connected with the side fixed beam (3), the movable beam (2) is restricted from moving along the direction parallel to the bottom plate (5).

4. A box structure according to claim 3, wherein a side relief cavity (21) is formed in the movable beam (2) at a position corresponding to the side fixing beam (3), and the side fixing beam (3) is accommodated in the side relief cavity (21).

5. -the box structure according to claim 4, characterized in that the number of side fixing beams (3) is two, the two side fixing beams (3) being arranged on opposite sides of the two side beams (12), respectively; the side abdication cavities (21) are positioned at two sides of the length direction of the movable beam (2).

6. -tank structure according to any one of claims 2 to 5, characterised in that the floor (5) comprises a heat exchanger plate; the box structure further includes:

the bottom cross beam (4) is fixedly connected with the bottom plate (5), and the bottom cross beam (4) extends from the side beam (12) on one side to the side beam (12) on the other side;

a bottom abdication cavity (24) is formed on one side of the movable beam (2) facing the bottom plate (5), and the bottom cross beam (4) is suitable for being accommodated in the bottom abdication cavity (24) so as to limit the movable beam (2) to move along the direction parallel to the bottom plate (5).

7. The box body structure according to claim 6, wherein the movable beam (2) is provided with a mounting hole (23), and the bottom cross beam (4) is provided with a fixing part (42) corresponding to the mounting hole (23);

the fixing piece is suitable for being fixedly connected with the fixing part (42) through the mounting hole (23) so as to limit the movable beam (2) to move in a direction away from the bottom cross beam (4).

8. The box structure according to claim 7, characterized in that a hollow cavity (31) is formed in the side fixing beam (3) in a penetrating manner, and the fixing piece is suitable for penetrating through the mounting hole (23) and the hollow cavity (31) in sequence and being fixed on the fixing part (42).

9. The box structure according to claim 6, characterized in that a supporting portion (22) is further provided in the movable beam (2), and a lower surface of the supporting portion (22) is adapted to abut against an upper surface of the bottom cross beam (4).

10. A box structure according to any one of claims 2-5, characterized in that the extension direction of the side fixing beams (3) is perpendicular to the bottom plate (5).

11. A battery pack, comprising:

a tank structure as claimed in any one of claims 1 to 10;

the movable beam (2) is suitable for dividing the box body structure into two spaces, wherein one space is suitable for placing a connector, and the other space is suitable for placing a battery;

the large surface of the battery is parallel to the movable beam (2).