CN215008390U

CN215008390U - End plate, battery package and vehicle

Info

Publication number: CN215008390U
Application number: CN202120425122.0U
Authority: CN
Inventors: 蒋雷雷
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-03
Anticipated expiration: 2031-02-26

Abstract

The utility model provides an end plate, battery package and vehicle, wherein, be provided with the protruding portion on the side of end plate, the protruding portion includes the inclined plane of keeping away from the end plate gradually from bottom to top, the inclined plane be used for with battery package box contact and butt on it. The utility model discloses a side at the end plate sets up the protruding portion, and inclined plane and box butt on the protruding portion bear the effort on the end plate through box support protruding portion, and the anti-bulging force of end plate is stronger, is difficult for producing deformation. By adopting the structure, the strength requirement on the end plate is lower, the thickness of the end plate can be relatively smaller, and the lightweight design of the end plate is realized.

Description

End plate, battery package and vehicle

Technical Field

The utility model relates to a battery technology field particularly, relates to an end plate, battery package and vehicle.

Background

Generally be provided with the end plate in the battery package, the end plate is connected on the box, and a side offsets with electric core, makes electric core stable in structure in the box through end plate extrusion electric core.

In the prior art, the end plate is fixed on the box body through the bolts on two sides, the battery core expansion force acting on the end plate is transmitted to the box body through the bolts at two ends, the force transmission path is longer, the expansion resistance is poorer, and the end plate is seriously deformed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an end plate, battery package and vehicle can solve above-mentioned at least one technical problem who mentions. The specific scheme is as follows:

according to the utility model discloses a specific embodiment, first aspect, the utility model provides an end plate, be provided with the protruding portion on a side of end plate, the protruding portion is including keeping away from gradually from bottom to top the inclined plane of end plate, the inclined plane is used for contacting with the battery package box and supports tightly on it.

Optionally, the protruding portion is an integrated structure disposed at a preset height on the end plate, and the width of the protruding portion is the same as that of the side plate; or the number of the protruding parts is multiple, and the multiple protruding parts are distributed at preset height positions on the end plate at intervals.

Optionally, the protrusion further comprises a top surface, the top surface is perpendicular to one side surface of the end plate and extends in a direction away from the end plate, and a side of the top surface away from the end plate intersects with a side of the inclined surface away from the end surface; and/or one side surface of the end plate, the inclined surface and the top surface are enclosed to form a cavity structure.

Optionally, a first reinforcing structure is arranged on the inclined surface of the protruding portion, and is used for being matched with a second reinforcing structure on the battery pack box body to limit the relative sliding of the protruding portion and the battery pack box body.

Optionally, the first reinforcing structure is a strip-shaped structure extending in the width direction of the protruding portion; alternatively, the first reinforcing structure comprises a plurality of reinforcing parts distributed on the inclined surface at intervals.

Optionally, the protruding portion is provided with a plurality of through holes for allowing fasteners to pass through the through holes to be fixed with the battery pack case.

Optionally, the end plate includes a body and an insulating buffer layer, the protruding portion is disposed on one side surface of the body, and the insulating buffer layer is attached to the other side surface of the body; the body is provided with a fusion hole, and the insulating buffer layer is partially embedded into the fusion hole.

Optionally, the end plate further includes a compression structure connected to a top end of the end plate, and the compression structure extends perpendicular to the end plate to a side of the end plate away from the protrusion for compressing the battery cell downward.

According to a specific embodiment of the present invention, in a second aspect, the present invention provides a battery pack, including the end plate as described in any one of the above.

According to the utility model discloses a specific embodiment, the third aspect, the utility model provides a vehicle, include as above the battery package.

Compared with the prior art, the embodiment of the utility model provides a following technological effect has:

the utility model discloses a side at the end plate sets up the protruding portion, and inclined plane and box butt on the protruding portion bear the effort on the end plate through box support protruding portion, and the anti-bulging force of end plate is stronger, is difficult for producing deformation. By adopting the structure, the strength requirement on the end plate is lower, the thickness of the end plate can be relatively smaller, and the lightweight design of the end plate is realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic overall structural view of an end plate according to an embodiment of the present application;

FIG. 2 is a side view of a protrusion in an endplate provided by an embodiment of the present application;

FIG. 3 is a schematic view of the abutting structure of the end plate and the box according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of the abutting structure of the end plate and the box body according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a battery pack according to an embodiment of the present application.

Description of reference numerals:

100-end plate, 110-body, 111-fused hole, 120-insulating buffer layer, 130-compaction structure, 200-protrusion, 210-perforation, 220-first strengthening structure, 300-battery pack box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, in the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In addition, in the present invention, unless otherwise explicitly specified or limited, the terms "connected", and the like are to be construed broadly, and may be, for example, a mechanical connection or an electrical connection; the term "connected" refers to a direct connection or an indirect connection through an intermediate medium, and refers to a connection between two elements or an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention is understood by those skilled in the art according to specific situations.

The following describes in detail alternative embodiments of the present invention with reference to the accompanying drawings.

Example 1

According to the present invention, the present invention provides an end plate 100, as shown in fig. 1-4, a protrusion 200 is provided on a side surface of the end plate 100, the protrusion 200 includes an inclined plane gradually away from the end plate 100 from bottom to top, and the protrusion 200 is used to contact and tightly support the battery pack case 300.

When in use, the inclined surface of the protrusion 200 on the end plate 100 contacts and abuts against the battery pack case 300, and the battery pack case 300 supports the protrusion 200 and thus the end plate 100. The force between the end plate 100 and the case 300, which is perpendicular to the slope of the protrusion 200, may be decomposed into a force pushing the battery pack case 300 in the horizontal direction and a force pressing the battery pack case 300 downward in the vertical direction, and the protrusion 200 may be able to press the battery pack case 300 with a distributed force. The protruding part 200 is supported by the battery pack case 300, so that extrusion force of battery core expansion to the end plate 100 is borne, the anti-expansion force of the end plate 100 is stronger, and deformation is not easy to generate.

It can be seen that, according to the end plate 100 provided in this embodiment, the protruding portion 200 is disposed on one side surface, the inclined surface on the protruding portion 200 abuts against the battery pack case 300, the battery pack case 300 supports the protruding portion 200 to bear the acting force of the battery core acting on the end plate 100, the expansion resistance of the end plate 100 is strong, and deformation is not easily generated. By adopting the structure, the strength requirement on the end plate 100 is lower, the thickness of the end plate 100 can be relatively smaller, and the lightweight design of the end plate 100 is realized.

The above-mentioned direction from bottom to top, i.e. the Z direction in fig. 1, may refer to a direction in which the end plate 100 is connected to the case 300, a portion of the end plate 100 contacting the battery pack case 300 is a lower portion (bottom end), a portion of the end plate 100 suspending in the air is an upper portion (top end), and the direction from bottom to top is a direction from the bottom end to the top end of the end plate 100.

The cross section of the protrusion 200 may be triangular, trapezoidal, or other irregular shapes, as long as a slope opposite to the battery pack case 300 is formed so that the battery pack case 300 supports the protrusion 200 through the slope and further supports the end plate 100, which is not particularly limited in this embodiment. For example, in fig. 1 and 2, the end plate 100 is shown as an approximate R-shaped structure following the shape of the battery pack case 300, the protrusion 200 includes a lower inclined surface and an upper top surface, the upper top surface is perpendicular to a side surface of the end plate 100 and extends in a direction away from the end plate 100, and a side of the top surface away from the end plate 100 and a side of the inclined surface away from the end plate intersect, specifically, intersect to form an arc-shaped transition section. So set up, on the basis of guaranteeing the connection effect for the surface after end plate 100 is connected with battery package box 300 is more level and smooth.

Alternatively, the protrusion 200 may have a solid structure to have high strength. Or, the protrusion 200 is a cavity structure formed by enclosing a side surface, an inclined surface and a top surface of the end plate 100, so as to save material and reduce weight.

In some alternative implementations of the present embodiment, the protrusion 200 is a unitary structure disposed at a predetermined height on the end plate 100, and the width of the protrusion 200 is the same as the width of the end plate 100. Here and below, "height" means a dimension in the Z direction in fig. 1, and width means a dimension in the X direction in fig. 1. That is, the continuous protruding portion 200 is disposed at the preset height of the side surface of the end plate 100, so that the stress distribution is more uniform, and the supporting effect of the battery pack case 300 on the end plate 100 is better.

In some optional implementations of the present embodiment, the number of the protruding portions 200 is multiple, and the multiple protruding portions 200 are distributed at intervals at a preset height on the end plate 100, at this time, the multiple protruding portions 200 respectively abut against multiple portions of the box 300, so as to improve the supporting effect. For example, the width of each protrusion 200 may be 1/5 times the width of the end plate 100, 3 or 4 protrusions 200 may be equally spaced at the same height on the end plate 100, etc. For another example, each protrusion 200 may have a width 1/4 of the width of the end plate 100, and two protrusions 200 may be disposed at the same height on the end plate 100 or 3 protrusions 200 may be disposed at equal intervals.

In some optional implementations of the present embodiment, the protruding portion 200 is provided with a plurality of through holes 210, so that the fastener passes through the through holes 210 to be fixed with the battery pack case 300; specifically, the fastener may employ a bolt, a fixing pin, a pin, or the like.

By providing the through-hole 210 in the protrusion 200 and fixing the fastener to the battery pack case 300 through the through-hole 210 to fix the end plate 100 to the battery pack case 300, the transmission path of force on the end plate 100 is changed by the change in the fixing manner. Compared with the prior art, the fixing points are moved from the two ends of the end plate 100 to the protruding parts 200 of the side wall of the end plate 100 and are closer to the middle part of the end plate 100, so that the moment generated by the expansion force is reduced, and the stress on the fastening piece is reduced.

Alternatively, a plurality of through holes 210 may be spaced apart from each other on the protruding portion 200, and each fastener is inserted through the corresponding through hole 210 and fixed in the battery pack case 300. By providing a plurality of perforations 210, the moment created by the expansion forces is further reduced, reducing the risk of deformation of the end plate 100. And the fixing effect between the end plate 100 and the battery pack case 300 can be improved.

In some optional implementations of the present embodiment, a first reinforcing structure 220 may be disposed on the slope of the protrusion 200 for cooperating with a second reinforcing structure on the battery pack case 300 to limit the relative sliding of the protrusion 200 and the battery pack case 300. With this arrangement, the fixing effect between the end plate 100 and the case 300 is improved by restricting the relative sliding of the protrusion 200 and the battery pack case 300.

Wherein, the first reinforcing structure 220 may be a strip structure extending along the width direction of the protrusion 200; alternatively, the first reinforcing structure 220 may include a plurality of reinforcing portions spaced apart on the inclined surface. So set up, can carry out the adaptability setting according to actual demand, can guarantee the linkage effect and can adapt to different operating modes again.

When the first reinforcing structure 220 is a bar-shaped structure, the first reinforcing structure 220 may be a protruded bar-shaped column (i.e., a reinforcing rib), and the second reinforcing structure may be a bar-shaped groove. Alternatively, the first reinforcing structure 220 may be a bar-shaped groove and the second reinforcing structure may be a protruding bar-shaped cylinder (i.e., a reinforcing rib). Still alternatively, a bar-shaped pillar and a bar-shaped groove may be simultaneously disposed on the inclined plane of the protruding portion 200 as the first reinforcing structure 220, and correspondingly, a bar-shaped groove and a bar-shaped pillar may be simultaneously disposed on the case 300.

Fig. 1 to 4 illustrate an example of using two parallel bar-shaped columns as the first reinforcing structure 220, and the two bar-shaped columns (i.e., two reinforcing ribs) are respectively embedded in corresponding grooves on the battery pack case 300, so that the limiting effect can be improved.

When the first reinforcing structure 220 includes a plurality of reinforcing parts, each reinforcing part may be a plurality of protrusions or slots or the like disposed on the inclined surface. For example, the reinforcing part may be a protrusion provided on the slope, and the battery pack case 300 may be provided with a slot corresponding to the protrusion, and the protrusion is inserted into the slot so that the protrusion 200 is fixed relative to the battery pack case 300. Alternatively, the reinforcing part may be a slot provided on the inclined surface, and a protrusion corresponding to the slot may be provided on the battery pack case 300, and the protrusion is inserted into the groove so that the protruding part 200 and the battery pack case 300 are relatively fixed. Still alternatively, the inclined surface of the protruding portion 200 may be provided with a slot and a protrusion as the reinforcing portion, and correspondingly, the case 300 may be provided with a corresponding protrusion and a corresponding slot.

The plurality of reinforcing portions may be distributed in a plurality of rows and a plurality of columns on the inclined surface, or may be distributed discretely, which is not limited in this embodiment.

In some optional implementations of the present embodiment, as shown in fig. 1, the end plate 100 includes a body 110 and an insulating buffer layer 120, the protrusion 200 is disposed on one side surface of the body 110, and the insulating buffer layer 120 is attached to the other side surface of the body 110. Through setting up insulating buffer layer 120, on the one hand can reduce weight, realize the lightweight design of end plate 100, on the other hand can play effects such as insulating, buffering, improves the security.

The insulating buffer layer 120 may be made of continuous glass fiber or carbon fiber material, or other materials with similar properties, as long as the purpose of insulation, buffering and weight reduction can be achieved, which is not limited in this embodiment.

The body 110 may be an aluminum profile, and the insulating buffer layer 120 may be die-cast with the body 110 made of an aluminum profile.

In some optional implementations of the present embodiment, the body 110 is provided with a fusion hole 111, and the insulating buffer layer 120 is partially embedded in the fusion hole 111. So set up, be convenient for set up insulating buffer layer 120 on body 110, and make insulating buffer layer 120 and body 110 fully contact, the connection effect is better, avoids insulating buffer layer 120 to drop from body 110.

Wherein the buffer material layer 120 may flow and be solidified in the fusion hole 111 when die-cast onto the body 110 to sufficiently fill the fusion hole 111.

The number of the fusion holes 111 is plural, and the plural fusion holes 111 may be distributed on the body 110 in an array, or may be distributed in any discrete manner, so that the insulation buffer layer 120 can be in good contact with the body 110. The shape of each fusion hole 111 may be circular, oval, polygonal, five-star, or other irregular structures, etc., as long as the composite material is allowed to flow into and well contact the inner wall of the fusion hole 111. One example of fusion holes 111 arranged in a multi-row and multi-column array with each fusion hole 111 being circular is shown in fig. 1.

In some optional implementations of the present embodiment, the top end of the end plate 100 is vertically connected to a pressing structure 130 extending toward a side of the end plate 100 away from the protrusion 200, for pressing the battery cell downward. Wherein, the compressing structure 130 may extend along the Y direction with reference to the direction shown in fig. 1, and the compressing structure 130 and the protrusion 200 are respectively located at two different sides of the end plate 100. Through setting up compact structure 130, can be along Z to compressing tightly electric core downwards, prevent the Z of electric core to the drunkenness to can increase creepage distance, improve the security.

The pressing structure 130 may be formed by extending the body 110 to one side, so that the pressing structure 130 has high strength. The buffer insulating layer 120 may also extend to one side, so that the compressing structure 130 has a high protection and isolation effect. Or, the compressing structure 130 is formed by extending the body 110 and the buffer insulating layer 120 to one side, that is, the compressing structure 130 also includes two layers, so that the strength of the compressing structure 130 is high and the effect of protection and isolation is achieved.

Example 2

The same structure in this embodiment as that in embodiment 1 is not described in detail, and the same structural parts have the same technical effects and are not described in detail. According to the specific embodiment of the present invention, the present invention provides a battery pack, as shown in fig. 5, including the end plate 100 of any one of the above.

In the battery pack provided by the embodiment, the protruding portion 200 is arranged on one side surface of the end plate 100, the inclined surface on the protruding portion 200 abuts against the battery pack case 300, the battery pack case 300 supports the protruding portion 200 to bear the acting force of the battery core acting on the end plate 100, and the end plate 100 has strong expansion resistance and is not easy to deform. By adopting the structure, the strength requirement on the end plate 100 is lower, the thickness of the end plate 100 can be relatively smaller, and the lightweight design of the end plate 100 is realized.

Wherein, the battery package still includes: a battery pack case 300, the battery pack case 300 being provided with an inclined surface opposite to the protrusion 200 and a fixing hole opposite to the through hole 210; and a fastener inserted through the through-hole 210 of the protrusion 200 and fixed in the fixing hole. So arranged, the battery pack case 300 and the protruding part 200 are fixed relatively, and the moment acting on the fastener is small.

In some optional implementations of the present embodiment, the battery pack case 300 is provided with a second reinforcing structure adapted to the first reinforcing structure 220 on the protrusion 200, and the first reinforcing structure 220 cooperates with the first reinforcing structure to limit the relative sliding between the protrusion 200 and the battery pack case 300. With this arrangement, the first reinforcing structure 220 can restrict relative sliding between the protrusion 200 and the battery pack case 300, and improve the fixing effect between the end plate 100 and the battery pack case 300.

Two parallel bar-shaped columns (i.e., reinforcing ribs) are adopted as the first reinforcing structure 220, a step-shaped groove is formed on the inclined surface of the battery pack case body 300, the bottom end of the first reinforcing structure 220 is in contact with the plane part of the step-shaped groove, the side surface of the first reinforcing structure 220 is abutted against the vertical surface of the step-shaped groove, and the two first reinforcing structures 220 are abutted against the two vertical surfaces to form two abutting surfaces which respectively limit the relative sliding of the protruding part 200 and the battery pack case body 300.

It is understood that the battery pack provided by the present embodiment further includes a plurality of battery cells, and the battery cells may be stacked in an array and abut against the end plate 100.

Example 3

The same structures as those in embodiments 1 and 2 are not described in detail, and the same structural parts have the same technical effects and are not described in detail. According to the utility model discloses a specific implementation way, the utility model provides a vehicle, include as embodiment 2 the battery package.

The vehicle that this embodiment provided, through adopting above-mentioned battery package, a side of end plate 100 sets up protruding portion 200, and the inclined plane on the protruding portion 200 and the butt of battery package box 300 support protruding portion 200 through battery package box 300 and undertake the effort of electric core effect on end plate 100, and the anti bulging force of end plate 100 is stronger, is difficult for producing deformation. By adopting the structure, the strength requirement on the end plate 100 is lower, the thickness of the end plate 100 can be relatively smaller, and the lightweight design of the end plate 100 is realized.

Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The system or the device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.

Claims

1. The end plate is characterized in that a protruding portion is arranged on one side face of the end plate, the protruding portion comprises an inclined face which is gradually far away from the end plate from bottom to top, and the inclined face is used for being in contact with a battery pack box body and being tightly abutted to the battery pack box body.

2. The end plate of claim 1, wherein the protrusion is a one-piece structure disposed at a predetermined height on the end plate, the protrusion having a width that is the same as a width of the end plate; or,

the number of the protruding parts is multiple, and the protruding parts are distributed at preset heights on the end plate at intervals.

3. The end plate of claim 1 or 2, wherein the protrusion further comprises a top surface extending perpendicular to a side of the end plate and away from the end plate, wherein a side of the top surface away from the end plate intersects a side of the chamfer away from the end plate; and/or the presence of a gas in the gas,

and a side surface of the end plate, the inclined surface and the top surface are enclosed to form a cavity structure.

4. The end plate of claim 1 or 2, wherein the protrusion has a first reinforcement structure disposed on a slope of the protrusion for cooperating with a second reinforcement structure on the battery pack case to restrict relative sliding movement of the protrusion and the battery pack case.

5. The end plate of claim 4, wherein the first reinforcing structure is a strip-shaped structure extending in a width direction of the protrusion; or,

the first reinforcing structure comprises a plurality of reinforcing parts which are distributed on the inclined plane at intervals.

6. The end plate of claim 1 or 2, wherein the protrusion is provided with a plurality of through holes for fastening a fastener to the battery pack case through the through holes.

7. The end plate of claim 1, wherein the end plate comprises a body and an insulating buffer layer, the protrusion is arranged on one side surface of the body, and the insulating buffer layer is attached to the other side surface of the body; and the number of the first and second groups,

the body is provided with a fusion hole, and the insulating buffer layer is partially embedded into the fusion hole.

8. The end plate of any of claims 1, 2 and 7, further comprising a compression structure connected to a top end of the end plate, the compression structure extending perpendicular to the end plate to a side of the end plate facing away from the protrusion for compressing the cell downward.

9. A battery pack comprising the end plate of any one of claims 1-8.

10. A vehicle characterized by comprising the battery pack according to claim 9.