CN220895721U

CN220895721U - Coupling assembling, battery box and battery package

Info

Publication number: CN220895721U
Application number: CN202322571473.4U
Authority: CN
Inventors: 温盛德
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-09-20
Filing date: 2023-09-20
Publication date: 2024-05-03
Anticipated expiration: 2033-09-20

Abstract

The utility model discloses a connecting assembly, a battery box body and a battery pack, wherein the connecting assembly comprises a connecting plate and a sealing gasket, the connecting plate is used for connecting an electric connecting piece and the battery box body, the connecting plate is arranged between the electric connecting piece and a side plate, and the orthographic projection of the connecting plate on the electric connecting piece completely covers one end of the electric connecting piece, which is close to the side plate; the sealing gasket is arranged between the connecting plate and the side plate, and the sealing gasket completely covers and is connected with one surface of the connecting plate far away from the side plate; the plug-in part penetrates through the connecting plate, and the density gasket is in plug-in fit with the first through hole. The connecting component is used for improving the tightness of the connecting part of the electric connecting piece and the side plate.

Description

Coupling assembling, battery box and battery package

Technical Field

The utility model relates to the technical field of energy storage, in particular to a connecting assembly, a battery box body and a battery pack.

Background

With the development of new energy technology, product categories with battery packs as energy supply main bodies appear in various industries, and the popularization of new energy automobiles is overwhelmed worldwide mainly when belonging to the automobile industry. The battery pack mainly comprises a battery box body, a battery core module and the like, wherein the battery core module is arranged in the battery box body.

The battery box body mainly comprises a cover plate, a side plate and a bottom plate, wherein a part of area on the side plate is used for installing various electric connecting pieces or control devices, the main installation structure is mainly characterized in that a connecting hole is formed in the side plate, the electric connecting pieces or the control devices are connected with the side plate, the connecting ends of the electric connecting pieces or the control devices extend into the battery box body through the connecting hole to be connected with related parts, and meanwhile, in order to ensure the tightness of the connecting position of the electric connecting pieces or the control devices and the side plate, a sealing ring is usually arranged at the connecting position of the electric connecting pieces or the control devices and the side plate.

But set up the junction of electrical connection spare and curb plate with the sealing washer alone, it can only carry out the shutoff with the junction edge of both, when ambient temperature changes, probably can lead to the sealing washer to warp, leads to sealing failure.

Disclosure of utility model

The embodiment of the utility model mainly aims to provide a connecting component, a battery box body and a battery pack, and aims to solve the technical problem that the sealing of the connecting part of an electric connecting piece and a side plate of the battery box body is unstable in the prior art.

The embodiment of the utility model provides a connecting assembly for connecting an electrical connector with a side plate of a battery box body, wherein one end of the electrical connector is provided with an insert part, the side plate is provided with a first through hole which is in plug-in fit with the insert part, and the connecting assembly comprises:

The connecting plate is used for connecting the electric connecting piece and the battery box body, the connecting plate is arranged between the electric connecting piece and the side plate, and the orthographic projection of the connecting plate on the electric connecting piece completely covers one end of the electric connecting piece, which is close to the side plate;

The sealing gasket is arranged between the connecting plate and the side plate, and the sealing gasket completely covers and is connected with one surface of the connecting plate far away from the side plate;

the plug-in part penetrates through the connecting plate, and the sealing gasket is in plug-in fit with the first through hole.

In some embodiments of the utility model, an orthographic projection of the connection plate on an end face of the electrical connection member near one end of the side plate coincides with the end face of the electrical connection member near one end of the side plate.

In some embodiments of the utility model, the orthographic projection of the sealing gasket on the end face of the electrical connector near the end of the side plate coincides with the orthographic projection of the connecting plate on the end face of the electrical connector near the end of the side plate.

In some embodiments of the present utility model, a surface of the connection plate adjacent to the sealing gasket is a plane, and a surface of the sealing gasket adjacent to the connection plate is a plane.

In some embodiments of the present utility model, a wall surface of the side plate connected to the sealing gasket is a plane, and a surface of the sealing gasket connected to the side plate is a plane.

In some embodiments of the present utility model, a surface of the connecting plate, which is close to the sealing gasket, is a curved surface, and a surface of the sealing gasket, which is close to the connecting plate, is a curved surface that is completely attached to the curved surface of the connecting plate.

In some embodiments of the utility model, the thickness of the sealing gasket is greater than the thickness of the connecting plate.

In some embodiments of the present utility model, the connection plate is a steel plate, and the thickness of the connection plate is 1mm-1.5mm.

In some embodiments of the present utility model, there is also provided a battery case including:

The above-mentioned connecting assembly;

a bottom plate;

The side plate is arranged around the edge of the bottom plate and connected with the bottom plate;

The cover plate is covered on one side of the side plate far away from the bottom plate and is connected with the side plate so as to form a battery cell accommodating space by matching with the bottom plate and the side plate;

and the electric connecting piece is connected to the side plate through the connecting component.

In some embodiments of the present utility model, the present utility model further provides a battery pack, including a battery cell module and the battery case described above, where the battery cell module is disposed in the battery cell accommodating cavity.

The embodiment of the utility model provides a connecting component, a battery box body and a battery pack, wherein the connecting component is mainly used for connecting an electric connecting piece and the side wall of the battery box body, and mainly comprises a connecting plate and a sealing gasket; the sealing gasket and the electric connecting piece are separated by the connecting plate, so that the electric connecting piece can be prevented from directly contacting the sealing gasket, and the sealing gasket is protected; meanwhile, one surface of the connecting plate, which is close to the side plate, is completely covered by the sealing gasket, so that the contact positions between the sealing gasket and the side plate and the contact positions between the connecting plate and the sealing gasket are respectively and uniformly bonded together, gaps between the connecting plate and the side plate are completely blocked, and the tightness of the electric connecting piece and the side plate is improved.

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 required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a connecting assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the connection of the connecting assembly to the electrical connector and the side plate according to one embodiment of the present utility model (side view);

FIG. 3 is a schematic view of the connection assembly, electrical connectors and side plates according to an embodiment of the present utility model;

Fig. 4 is a schematic structural view of a battery case according to an embodiment of the present utility model.

Reference numerals: 10. an electrical connection; 30. a side plate; 31. a first through hole; 40. a cover plate; 60. a bottom plate; 100. a connecting plate; 101. a second through hole; 200. a sealing gasket; 201. and a third through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. 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, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

As shown in fig. 1 to 4, the present utility model provides a connection assembly for connecting an electrical connector 10 with a side plate 30 of a battery case, one end of the electrical connector 10 having an insert portion, the side plate 30 being provided with a first through hole 31 for insertion-fit with the insert portion, the connection assembly comprising a connection plate 100 and a sealing gasket 200. The connection plate 100 is used for connecting the electrical connector 10 and the battery box, and the front projection of the connection plate 100 on the electrical connector 10 completely covers one end of the electrical connector 10 connected with the side plate 30, and the connection plate 100 is provided with a second through hole 101 which is identical to the first through hole 31 in shape and size, so that the plug-in part can be inserted into the first through hole 31 through the connection plate 100.

The sealing gasket 200 is connected between the connecting plate 100 and the side plate 30, the sealing gasket 200 completely covers the surface of the connecting plate 100, which is far away from the side plate 30, the sealing gasket 200 is provided with a third through hole 201 which is aligned with the second through hole 101 and has the same shape and size, so that the plug-in part can be inserted into the first through hole 31 through the sealing gasket 200, one surface of the sealing gasket 200, which is close to the connecting plate 100, is completely attached to one surface of the connecting plate 100, which is close to the side plate 30, and one surface of the sealing gasket 200, which is close to the side plate 30, is completely attached to the side plate 30. The plug-in part penetrates through the connecting plate (100) and the sealing gasket (200) to be in plug-in fit with the first through hole (31).

The electrical connector 10 is generally used to connect a battery cell inside a battery box with a control system outside the battery box and other devices to be powered.

The connecting plate 100 generally adopts a hard plate-shaped structure such as a steel plate and an aluminum plate, and as the connecting plate 100 and an electric appliance connecting piece are generally connected through bolts, the hard plate can ensure that the bolts are stably connected on the connecting plate 100 and the electric connecting piece 10, so that the connection stability between the connecting plate 100 and the electric connecting piece is improved, meanwhile, the contact surface between the parts of the hard plate and the sealing gasket 200 is stable, the pressure applied to the sealing gasket 200 everywhere can be kept constant, and therefore, the two side surfaces of the sealing gasket 200 can be respectively clung to the connecting plate 100 and the side plate 30.

The sealing gasket 200 is generally made of foam and has a certain elasticity, and is arranged between the connecting plate 100 and the side plate 30, so that not only can the sealing effect be achieved between the connecting plate 100 and the side plate 30, but also a buffer effect can be achieved between the connecting plate 100 and the side plate 30, and friction between the connecting plate 100 and the side plate 30 is avoided.

It can be appreciated that the present utility model uses the connection board 100 as an intermediate connection piece, so that the connection board 100 completely covers the end face of the electrical connection piece 10, and a sealing gasket 200 is provided between the connection board 100 and the side board 30; separating the sealing gasket 200 from the electrical connector 10 by the connecting plate 100 can prevent the electrical connector 10 from directly contacting the sealing gasket 200, thereby protecting the sealing gasket 200; meanwhile, the sealing gasket 200 completely covers one surface of the connecting plate 100, which is close to the side plate 30, so that the contact positions between the sealing gasket 200 and the side plate 30 and the contact positions between the connecting plate 100 and the sealing gasket 200 are respectively and surface-to-surface bonded together, and gaps between the connecting plate 100 and the side plate 30 are completely blocked, and the tightness of the electric connecting piece 10 and the side plate 30 is improved.

In some embodiments, the electrical connector 10, the connection plate 100, the sealing gasket 200, and the side plate 30 are connected by bolts and nuts, that is, through holes aligned with each other are provided on the electrical connector 10, the connection plate 100, the sealing gasket 200, and the side plate 30, and the bolts sequentially pass through the through holes on the electrical connector 10, the connection plate 100, the sealing gasket 200, and the side plate 30 and are connected with nuts located in the battery case, thereby sequentially connecting the electrical connector 10, the connection plate 100, the sealing gasket 200, and the side plate 30.

In some embodiments, the orthographic projection of the connection plate 100 on the end face of the electrical connector 10 near the end of the side plate 30 coincides with the end face of the electrical connector 10 near the end of the side plate 30.

That is, since the insert portion is generally protruded from the end surface of the electrical connector 10, the shape and size of the connection board 100 are consistent with the portion of the end surface of the electrical connector 10 from which the insert portion is removed, thereby ensuring that the connection board 100 can completely cover the remaining area of the end surface of the electrical connector 10 from which the insert portion is removed, so that the entire portion of the connection board 100 can be subjected to pressure and transferred to the gasket seal 200, thereby pressing the gasket seal 200.

It will be appreciated that the orthographic projection of the connection plate 100 onto the end face of the electrical connector 10 coincides with this end face, i.e. covers the end face of the electrical connector 10 with a relatively small material cost.

In some embodiments, the orthographic projection of the connection board 100 on the end face of the electrical connector 10 near the end of the side board 30 is larger than the end face of the electrical connector 10 near the end of the side board 30, that is, the area of the connection board 100 is larger than the area of the end face of the electrical connector 10, and the connection board 100 covers the end face of the electrical connector 10 and leaves a margin.

In some embodiments, the orthographic projection of gasket 200 on the end face of electrical connector 10 near side plate 30 coincides with the orthographic projection of connecting plate 100 on the end face of electrical connector 10 near side plate 30.

Referring to the arrangement of the connection plate 100 and the electrical connector 10, the gasket 200 conforms to the shape and size of the connection, and also covers the surface of the connection plate 100 adjacent to the side plate 30 at a relatively low material cost, thereby forming a seal between the connection plate 100 and the side plate 30.

In some embodiments, the orthographic projection of gasket 200 on the end face of electrical connector 10 near side plate 30 is greater than the orthographic projection of connecting plate 100 on the end face of electrical connector 10 near side plate 30. That is, the area of the gasket 200 is larger than the area of the connection plate 100, and the gasket 200 leaves a margin after the connection plate 100 is completely covered.

In some embodiments, the side of the web 100 adjacent to the gasket seal 200 is planar and the side of the gasket seal 200 adjacent to the web 100 is planar.

It can be appreciated that the surface of the connecting plate 100 and the sealing gasket 200, which are in contact with each other, is a plane, so that the connecting plate 100 and the sealing gasket 200 are easier to be attached, and more importantly, the surface of the connecting plate 100, which is close to the sealing gasket 200, is a plane, so that the connecting plate 100 can apply a pressing force to the sealing gasket 200 more uniformly, and therefore, the sealing gasket 200 can be pressed on the side plate 30 everywhere, and the tightness between the connecting plate 100 and the side plate 30 is ensured.

In some embodiments, the wall surface of the side plate 30 to which the gasket seal 200 is attached is planar, and the surface of the gasket seal 200 to which the side plate 30 is attached is planar.

It can be understood that, referring to the above-mentioned planar contact arrangement of the connection plate 100 and the sealing gasket 200, the contact surfaces of the side plate 30 and the sealing gasket 200 are planar, so that the sealing gasket 200 can be attached to the side plate 30 more easily, and the gap between the connection plate 100 and the side plate 30 can be blocked uniformly by the sealing gasket 200 and is pressed by the connection plate 100 uniformly, so that the interval between the connection plate 100 and the side plate 30 can be sealed for a long time by the sealing gasket 200.

In some embodiments, the side of the connection plate 100 adjacent to the sealing gasket 200 is a curved surface, and the side of the sealing gasket 200 adjacent to the connection plate 100 is a curved surface that completely conforms to the curved surface of the connection plate 100; the wall surface of the side plate 30 connected to the gasket 200 is a plane, and the surface of the gasket 200 connected to the side plate 30 is a plane.

In some embodiments, the thickness of the sealing gasket 200 is greater than the thickness of the connection plate 100.

That is, since the gasket 200 is required to undergo compression deformation to some extent by the pressing force applied to the gasket 200 by the connection plate 100, setting the thickness of the gasket 200 to be greater than the thickness of the connection plate 100 allows more deformation space to be reserved for the gasket 200, and the compression shape of the gasket 200 is changed more, thereby improving the sealing effect.

In some embodiments, the connection plate 100 is made of steel plate and is formed as a rectangular steel plate.

In some embodiments, the thickness of the web 100 is 1mm-1.5mm. The thickness of the gasket seal 200 is 3mm-5mm.

In some embodiments, the thickness of the connection plate 100 is 1mm. The thickness of the gasket seal 200 is 3mm.

In some embodiments, the thickness of the web 100 is 1.5mm. The thickness of the gasket seal 200 is 5mm.

In some embodiments, at least one sealing gasket 200 is disposed between the connecting plate 100 and the side plate 30. That is, one or more sealing gaskets 200 may be provided between the connection plate 100 and the side plate 30. When a plurality of sealing gaskets 200 are provided between the connection plate 100 and the side plate 30, the plurality of sealing gaskets 200 are sequentially provided between the connection plate 100 and the side plate 30.

Generally, when a plurality of gasket seals 200 are provided between the connection plate 100 and the side plate 30, the number of gasket seals 200 is two.

In some embodiments, the connection assembly further includes a sealing ring formed of a sealant applied to the side plate 30 around the sealing gasket 200.

In some embodiments, the utility model further provides a battery box, which comprises the above-mentioned connection assembly, a bottom plate 60, a side plate 30, a cover plate 40 and an electrical connector 10, wherein the side plate 30 is arranged around the edge of the bottom plate 60 and is connected with the bottom plate 60, the cover plate 40 covers one side of the side plate 30 away from the bottom plate 60 and is connected with the side plate 30, and the cover plate 40 cooperates with the side plate 30 and the bottom plate 60 to form a battery cell accommodating space. The electrical connector 10 is connected to the side plate 30 by the above-described connection assembly.

Because the battery box body comprises the connecting component of the embodiment, the battery box body has at least some or all of the beneficial effects of the embodiment of the battery box body, and the details are not repeated here.

In some embodiments, the utility model further provides a battery pack, which comprises the battery cell module and the battery box body, wherein the battery cell module is arranged in the battery cell accommodating space. Because the battery pack includes the battery case of the above embodiment, it has at least some or all of the beneficial effects of the above embodiment of the battery case, and will not be described in detail herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A connection assembly for connecting an electrical connector (10) with a side plate (30) of a battery box, one end of the electrical connector (10) having an insert portion, the side plate (30) being provided with a first through hole (31) in plug-in engagement with the insert portion, the connection assembly comprising:

the connecting plate (100) is used for connecting the electric connecting piece (10) and the battery box body, the connecting plate (100) is arranged between the electric connecting piece (10) and the side plate (30), and the orthographic projection of the connecting plate (100) on the electric connecting piece (10) completely covers one end, close to the side plate (30), of the electric connecting piece (10);

A sealing gasket (200) disposed between the connection plate (100) and the side plate (30), wherein the sealing gasket (200) completely covers and connects one surface of the connection plate (100) close to the side plate (30);

The plug-in part penetrates through the connecting plate (100), and the sealing gasket (200) is in plug-in fit with the first through hole (31).

2. The connection assembly according to claim 1, characterized in that the orthographic projection of the connection plate (100) on the end face of the electrical connection piece (10) near the end of the side plate (30) coincides with the end face of the electrical connection piece (10) near the end of the side plate (30).

3. The connection assembly according to claim 2, characterized in that the orthographic projection of the sealing gasket (200) on the end face of the electrical connection piece (10) near the end of the side plate (30) coincides with the orthographic projection of the connection plate (100) on the end face of the electrical connection piece (10) near the end of the side plate (30).

4. The connection assembly according to claim 1, wherein a face of the connection plate (100) adjacent to the sealing gasket (200) is planar, and a face of the sealing gasket (200) adjacent to the connection plate (100) is planar.

5. The connection assembly according to claim 4, wherein the wall surface of the side plate (30) to which the sealing gasket (200) is connected is a plane, and the surface of the sealing gasket (200) to which the side plate (30) is connected is a plane.

6. The connection assembly according to claim 1, wherein a surface of the connection plate (100) adjacent to the sealing gasket (200) is a curved surface, and a surface of the sealing gasket (200) adjacent to the connection plate (100) is a curved surface completely fitting the curved surface of the connection plate (100).

7. The connection assembly according to claim 1, characterized in that the thickness of the sealing gasket (200) is greater than the thickness of the connection plate (100).

8. The connection assembly according to claim 1, wherein the connection plate (100) is a steel plate, and the thickness of the connection plate (100) is 1mm-1.5mm.

9. A battery box, comprising:

The connection assembly of any one of claims 1-8;

A bottom plate (60);

a side plate (30) which is provided around the edge of the bottom plate (60) and is connected to the bottom plate (60);

The cover plate (40) is covered on one side of the side plate (30) away from the bottom plate (60) and is connected with the side plate (30) so as to form a battery cell accommodating space in cooperation with the bottom plate (60) and the side plate (30);

And an electrical connector (10) connected to the side plate (30) through the connection assembly.

10. A battery pack, comprising:

The battery case of claim 9;

and the battery cell module is arranged in the battery cell accommodating space.