CN214176177U - Power battery module and side plate thereof - Google Patents

Abstract

The utility model provides a power battery module and a side plate thereof, wherein the power battery module comprises a liquid cooling plate; a first plate surface facing upwards; the power battery module also comprises a battery unit arranged on the first plate surface, and the first plate surface is provided with a connecting column extending along the vertical direction; located outside the battery cell; this curb plate includes: a plate body located between the battery unit and the connection column; the plate body is provided with a first surface and a second surface which are opposite along the thickness direction of the plate body; the first surface faces the battery cell; reinforcing ribs; it is set on the second surface; the reinforcing ribs protrude out of the second surface in a direction away from the first surface; the inserting bulge is arranged on the reinforcing rib; the inserting projection is provided with an inserting groove; one side of the insertion groove, which is back to the first surface, is opened and is used for being in insertion fit with the connecting column. The utility model provides a power battery module and curb plate thereof, it can reduce weight under the circumstances of guaranteeing structural strength to can be connected firmly with the liquid cooling board.

Description

Power battery module and side plate thereof

Technical Field

The utility model relates to a power battery module and curb plate thereof.

Background

The power battery system is the most important component in the new energy automobile. With the development of new energy automobiles, the requirements on the energy density of a power battery system are higher and higher.

The existing power battery system generally comprises a box body and a plurality of power battery modules arranged in the box body. The power battery module comprises a shell and a battery unit positioned in the shell. The power battery module side plate is a part of a shell of the power battery module, and has a protective performance for protecting a battery unit in the shell from being damaged by the outside. For example, the power battery module curb plate can effectively bear external load under running into the proruption situation such as collision, forward extrusion, reduces the impaired risk of battery unit, avoids battery inefficacy and thermal runaway. The thickness of the existing power battery module side plate is thick, and the weight is large. Further, a liquid cooling plate is arranged in the battery unit. The liquid cooling plate is usually connected to the power battery module base plate. So the liquid cooling board takes place relative movement with power battery module curb plate easily, and then influences the performance of electric core in the battery unit.

Therefore, it is necessary to provide a power battery module and a side plate thereof to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power battery module and curb plate thereof, it can reduce weight under the circumstances of guaranteeing structural strength to can be connected firmly with the liquid cooling board.

The above object of the present invention can be achieved by the following technical solutions: a power battery module side plate comprises a liquid cooling plate; the liquid cooling plate is provided with a first plate surface facing upwards; the power battery module further comprises a battery unit arranged on the first plate surface, and a connecting column extending along the vertical direction is arranged on the first plate surface; the connecting column is positioned at the outer side of the battery unit; the power battery module curb plate includes: a plate body positioned between the battery cell and the connection post; the plate body is provided with a first surface and a second surface which are opposite along the thickness direction of the plate body; the first surface faces the battery cell; reinforcing ribs; disposed on the second surface; the reinforcing ribs protrude from the second surface in a direction away from the first surface; the inserting projection is arranged on the reinforcing rib; the inserting projection is provided with an inserting groove; one side of the insertion groove, back to the first surface, is open and is used for being in insertion fit with the connecting column.

As a preferred embodiment, the plugging projection includes two first plugging plates arranged oppositely and a second plugging plate arranged between the two first plugging plates; the first plug board is vertically connected with the second plug board; the inserting groove is arranged on the second inserting plate.

As a preferred embodiment, the reinforcing rib includes a plurality of vertical ribs extending in a height direction of the plate body; the two first plug boards are respectively arranged on the adjacent vertical ribs; the extending direction of the first inserting plate is consistent with the extending direction of the vertical ribs.

In a preferred embodiment, a plurality of the vertical ribs form a plurality of spaced first rib units; the first rib unit comprises two vertical ribs; the interval between the first rib unit is greater than the interval between two vertical ribs in the first rib unit.

In a preferred embodiment, the reinforcing rib further comprises a plurality of transverse ribs extending perpendicularly to the vertical ribs; the plurality of transverse ribs are uniformly arranged at intervals along the height direction of the plate body.

As a preferred embodiment, the power battery module further comprises a power battery module upper cover plate arranged above the battery unit; the power battery module side plate also comprises a connecting strip arranged at the top of the plate body; and a slot which is used for being matched with the upper cover plate of the power battery module in an inserting way is arranged in the connecting strip.

As a preferred embodiment, the method further comprises: two convex parts respectively arranged on the opposite sides of the plate body; the first surface and the second surface are located between the two convex parts; the convex connection part is provided with a through hole extending along the vertical direction; the through hole is used for being connected with a box body of the power battery system.

As a preferred embodiment, the plate body is located on the first plate surface; the inserting protrusion is arranged on the lower portion of the second surface.

As a preferred embodiment, the plate body is provided with a slot for the liquid cooling plate to pass through; the inserting protrusion is arranged above the slot.

A power battery module, it includes: a liquid-cooled plate; the liquid cooling plate is provided with a first plate surface facing upwards; the first plate surface is provided with a connecting column extending along the vertical direction; the battery unit is arranged on the first plate surface, and the connecting column is positioned on the outer side of the battery unit; the power battery module side plate is as described above; the side plate is located between the battery cell and the connection post.

The application provides a power battery module and beneficial effect of curb plate thereof is: the power battery module side plate and the module thereof are provided with the reinforcing ribs and the inserting bulges; the reinforcing rib is arranged on the second surface; the ribs project from the second surface in a direction away from the first surface. Therefore, on one hand, the structural strength of the plate body can be ensured through the reinforcing ribs, and further, the structural strength of the side plate of the power battery module is ensured; on the other hand, the thickness of the plate body can be reduced through the reinforcing ribs, and the weight of the side plate of the power battery module is further reduced. Furthermore, the inserting protrusion is arranged on the reinforcing rib. The inserting projection is provided with an inserting groove. One side of the insertion groove, which is back to the first surface, is opened and is used for being in insertion fit with the connecting column. Therefore, the liquid cooling plate can be fixed by inserting and matching the liquid cooling plate in the battery unit with the inserting protrusion. Thus, the liquid cooling plate is convenient to fix. Furthermore, the spliced pole on this liquid cooling board is pegged graft fixedly with the inserting groove back to battery unit one side, and one side that the inserting groove is back to the first surface opens, so on power battery module side plate thickness direction, the liquid cooling board is spacing by the inserting groove, and then with the firm connection of liquid cooling board. Therefore, the utility model provides a power battery module and curb plate thereof, it can reduce weight under the condition of guaranteeing structural strength to can be connected with the liquid cooling board is firm.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a side plate of a power battery module according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a power cell system provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a power battery module according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery cell provided in an embodiment of the present application.

Description of reference numerals:

13. a plate body; 14. a first surface; 15. a second surface; 19. inserting grooves; 21. a first patch panel; 22. a second patch panel; 27. erecting ribs; 31. transverse ribs; 33. a first convex connection portion; 35. a second convex connection portion; 37. a through hole; 39. a through hole; 41. a housing; 43. a box body; 45. a liquid-cooled plate; 47. connecting columns; 49. a battery cell; 51. an electrical core assembly; 53. a connecting strip; 55. and (4) a slot.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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.

Please refer to fig. 1 to 4. According to the power battery module side plate provided by the application, the power battery module comprises a liquid cooling plate 45; the liquid cooling plate 45 has a first plate surface facing upward; the power battery module further comprises a battery unit 49 arranged on the first plate surface, and a connecting column 47 extending along the vertical direction is arranged on the first plate surface; the connection post 47 is located outside the battery cell 49; the power battery module curb plate can include: a plate body 13 located between the battery cell 49 and the connection post 47; the plate body 13 has a first surface 14 and a second surface 15 opposite to each other in a thickness direction thereof; the first surface 14 faces the battery cell 49; reinforcing ribs; disposed on said second surface 15; the ribs project from the second surface 15 in a direction away from the first surface 14; the inserting projection is arranged on the reinforcing rib; the inserting projection is provided with an inserting groove 19; the side of the plug-in groove 19 facing away from the first surface 14 is open for plug-in cooperation with the connecting pin 47.

The technical scheme shows that: the side plate of the power battery module is provided with the reinforcing ribs and the insertion bulges; the ribs are disposed on the second surface 15; which protrudes from said second surface 15 in a direction away from said first surface 14. Therefore, on one hand, the structural strength of the plate body 13 can be ensured through the reinforcing ribs, and further, the structural strength of the side plate of the power battery module is ensured; on the other hand, the thickness of the plate body 13 can be reduced through the reinforcing ribs, and the weight of the side plate of the power battery module is further reduced. Furthermore, the inserting protrusion is arranged on the reinforcing rib. The insertion projection is provided with an insertion groove 19. The side of the plug-in groove 19 facing away from the first surface 14 is open for a plug-in fit with the connecting stub 47. Thereby, the liquid cooling plate 45 can be fixed by inserting and matching the liquid cooling plate 45 and the inserting protrusion. This facilitates the fixing of the liquid cooling plate 45. Furthermore, the connection post 47 on the liquid cooling plate 45 is fixedly connected with the insertion groove 19 on the side back to the battery unit 49 in an insertion manner, and the side, back to the first surface 14, of the insertion groove 19 is open, so that the liquid cooling plate 45 is limited by the insertion groove 19 in the thickness direction of the side plate of the power battery module, and is further firmly connected with the liquid cooling plate 45.

In this embodiment, the power battery module includes a liquid-cooled plate 45. For example, fig. 3 shows a schematic structural diagram of a power battery module to which the power battery module side plate according to the embodiment of the present disclosure is applied. Of course, the power battery module side plate according to the embodiment of the present application is not only suitable for the power battery module shown in fig. 3, but also can be in other structures, and the present application is not limited thereto. Further, as shown in fig. 3, the liquid cooling plate 45 has a first plate surface facing upward. The power battery module further includes a battery unit 49 disposed on the first plate surface. The first plate surface is provided with a connecting column 47 extending in the vertical direction. The connecting post 47 is located on the outside of the battery cell 49. Further, the power battery module further includes a power battery module upper cover plate disposed above the battery unit 49. The battery unit includes a plurality of stacked cells.

In the present embodiment, the plate body 13 is rectangular as a whole. Of course, the plate 13 is not limited to a rectangular shape, and may have other shapes, which is not specified in the present application. Further, the plate body 13 has a first surface 14 and a second surface 15 which are opposed to each other in the thickness direction thereof. For example, as shown in fig. 1, the thickness direction of the plate body 13 is a direction perpendicular to the paper surface. The first surface 14 faces away from the paper. The second surface 15 faces the paper. The first surface 14 faces the battery cell 49. Further, the plate body 13 is made of plastic material. So that the plate body 13 made of plastic material has a light weight.

In the present embodiment, the ribs are provided on the second surface 15. The ribs project from the second surface 15 in a direction away from the first surface 14. For example, as shown in fig. 1, the ribs project outwardly of the page from the second surface 15. Thus, when the second surface 15 is subjected to sudden conditions such as collision and forward extrusion, external loads can be effectively borne, the risk of damage to the battery cells 49 is reduced, and battery failure and thermal runaway are avoided.

Further, the reinforcing ribs include a plurality of vertical ribs 27 extending in the height direction of the plate body 13. The plurality may be 2, 3, 4, 5, etc., and this application does not specify so. For example, as shown in fig. 1, the second surface 15 is provided with 6 vertical ribs 27. Further, the first rib unit includes two vertical ribs 27. The plurality of vertical ribs 27 form a plurality of spaced first rib units. As shown in fig. 1, 6 vertical ribs 27 form 3 first rib units. Specifically, the 6 vertical ribs 27 form a left-side first rib unit located on the left side, a right-side first rib unit located on the right side, and a middle first rib unit located in the middle. Further, the interval between the first rib units is larger than the interval between the two vertical ribs 27 in the two first rib units. Specifically, as shown in fig. 1, the interval between two vertical ribs 27 in the first rib unit on the left side, the interval between two vertical ribs 27 in the first rib unit on the right side, and the interval between two vertical ribs 27 in the first rib unit in the middle are equal. The interval between first muscle spare unit in left side and the first muscle spare unit in the middle, the interval between first muscle spare unit in the middle and the first muscle spare unit in right side equals. More specifically, the interval between the first rib unit on the left side and the first rib unit in the middle may be a distance between the vertical rib 27 of the first rib unit on the left side close to the first rib unit in the middle and the vertical rib 27 of the first rib unit in the middle close to the first rib unit on the left side.

Further, the reinforcing bar further includes a plurality of transverse ribs 31 extending perpendicularly to the vertical ribs 27. As shown in fig. 1, for example, the reinforcing bar further includes 3 transverse bars 31. Further, the plurality of transverse ribs 31 are arranged at regular intervals in the height direction of the plate body 13. For example, as shown in fig. 1, 3 transverse ribs 31 are provided at intervals in the vertical direction.

In this embodiment, the insertion projection is provided on the reinforcing rib. For example, as shown in fig. 1, the number of the insertion projections is two. Two grafting archs set up respectively on first muscle spare unit in left side and the first muscle spare unit in right side. Further, the insertion projection is provided with an insertion groove 19. The side of the plug groove 19 facing away from the first surface 14 is open. The insertion groove 19 is used for insertion fit with the connection column 47. As shown in fig. 1, for example, the insertion groove 19 is open toward the outside of the paper surface, so that when the first surface 14 faces the battery unit 49, the insertion protrusion is located between the battery unit 49 and the connection column 47, and the connection column 47 can be inserted into the insertion groove 19. This is restricted by the connecting posts 47 when the battery unit 49 moves in the thickness direction of the plate body 13, thereby reducing the movement of the battery unit 49 in the thickness direction of the plate body 13. On the other hand, during the installation, only need wear to locate spliced pole 47 in the inserting groove 19 for inserting groove 19 and spliced pole 47 are pegged graft and are cooperated, so can be in order to realize the installation of liquid cooling board 45 with plate body 13, and consequently inserting groove 19 has made things convenient for the fixed to liquid cooling board 45.

Further, the plugging projection includes two first plugging plates 21 disposed opposite to each other and a second plugging plate 22 disposed between the two first plugging plates 21. For example, as shown in fig. 1, two first socket plates 21 are disposed to face each other in the left-right direction. The second plugboard 22 is located at the lower part of the two first plugboards 21. Further, the first patch panel 21 is vertically connected to the second patch panel 22. The socket groove 19 is provided on the second socket plate 22. For example, as shown in fig. 1, the first patch panel 21 extends in the up-down direction. The second jack panel 22 extends in a horizontal direction. So that the second socket plate 22 can be fixed to the second surface 15 of the plate body 13 by the two first socket plates 21. The socket groove 19 is an elliptical groove provided on the second socket plate 22. Therefore, after the connecting column 47 is inserted into the elliptical groove, the elliptical groove can prevent the connecting column 47 from moving out along the radial direction.

Further, two first socket plates 21 are respectively disposed on the adjacent vertical ribs 27. The extension direction of the first plugboard 21 is consistent with the extension direction of the vertical rib 27. Specifically, the two first plugging plates 21 are respectively disposed on the two vertical ribs 27 of the first rib unit. More specifically, the two first socket plates 21 are fixed to the two vertical ribs 27 of the first rib unit, respectively. The fixing mode can be screw fixing, bolt fixing, welding fixing, integral forming fixing and the like, and the application is not specified. So can strengthen the joint strength of plate body 13 through erecting muscle 27, and then improve plate body 13 to the spacing stability of liquid cooling plate 45.

Further, the inserting projection is multiple. For example, as shown in fig. 1, the number of the insertion projections is two. Further, the plurality of insertion protrusions form at least one insertion assembly in the height direction of the plate body 13. The at least one may be 1. For example, as shown in fig. 1, the two plug-in projections form a plug-in assembly. Of course, the number of the at least one may be plural, and the present application does not intend to limit the present invention. Further, the liquid-cooled plate 45 is at least one. The plug-in components correspond to the liquid cooling plates 45 one to one. The one-to-one correspondence may be such that the number of liquid cooled plates 45 is equal to the number of plug assemblies. For example, when there is one liquid cooling plate 45, the number of the plug-in modules is 1. When there are a plurality of liquid cooling plates 45, there are a plurality of plug-in components. Further, the insertion groove 19 of the insertion assembly is inserted and matched with the corresponding connection column 47 on the liquid cooling plate 45. Therefore, each liquid cooling plate 45 can be limited through each plug-in assembly, and the connection firmness of the liquid cooling plates 45 is enhanced.

Further, the power battery module curb plate of this application embodiment still includes: two convex portions respectively provided at opposite sides of the plate body 13. For example, as shown in fig. 1, the convex portion extends outward in the length direction of the plate body 13. Specifically, the two convex portions include a first convex portion 33 located on the left side of the plate body 13 and a second convex portion 35 located on the right side of the plate body 13. Further, the first surface 14 and the second surface 15 are located between the two convex portions. The projecting portion is provided with a through hole 37 extending in the height direction of the plate body 13. The through-hole 37 is used for connection to a tank 43 of the power battery system. As shown in fig. 2, the power cell system includes a tank 43 and a case 41 provided in the tank 43. The housing 41 includes two side plates of the power battery module. More specifically, a screw may be inserted into the through hole 37, and the through hole is connected to a case 43 of the power battery system by a screw. Of course, the through hole 37 may be a bolt instead of a screw, and this application does not limit the present invention.

Further, the convex portion is provided with a through hole 39 extending in the height direction of the plate body 13. The through hole 39 is used for connecting with the end plate of the power battery module. As shown in fig. 1, for example, the through hole 39 is located between the through hole 37 and the plate body 13.

Further, the electric core assembly 51 is one. The plate body 13 is now located on the first plate surface. The insertion projection is provided at a lower portion of the second surface 15. Specifically, when the electric core assembly 51 is one, the liquid-cooled plate 45 is one. A liquid cooling plate 45 is disposed below the battery unit 49. So that the plate body 13 can be arranged above the liquid cooling plate 45, and the insertion groove 19 is inserted and matched with the connecting column 47.

Further, the electric core assembly 51 is plural. The plate body 13 is provided with a slot for the liquid cooling plate 45 to pass through. The inserting protrusion is arranged above the slot. Specifically, as shown in fig. 4, when the electric core assembly 51 is plural, at least one liquid-cooled plate 45 is provided. The liquid cooling plates 45 are disposed between adjacent electric core assemblies 51. The liquid cooling plate 45 can penetrate through the slot, so that the plate body 13 is positioned between the battery unit 49 and the connecting column 47, and the inserting groove 19 is inserted and matched with the connecting column 47.

Further, the power battery module curb plate of this application embodiment still includes: and a connecting strip 53 disposed on the top of the plate body 13. The connecting strip 53 is provided with a slot 55 for inserting and matching with the upper cover plate of the power battery module.

Further, as shown in fig. 3, the present application also provides a power battery module, which includes: a liquid-cooled plate 45; the liquid cooling plate 45 has a first plate surface facing upward; a connecting column 47 extending along the vertical direction is arranged on the first plate surface; the battery unit 49 is arranged on the first plate surface, and the connecting column 47 is positioned on the outer side of the battery unit 49; the power battery module side plate is as described above; the side plates are located between the battery cells 49 and the connection posts 47.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.

Claims (10)

1. A power battery module side plate comprises a liquid cooling plate; the liquid cooling plate is provided with a first plate surface facing upwards; the power battery module further comprises a battery unit arranged on the first plate surface, and a connecting column extending along the vertical direction is arranged on the first plate surface; the connecting column is positioned at the outer side of the battery unit; its characterized in that, power battery module curb plate includes:

a plate body positioned between the battery cell and the connection post; the plate body is provided with a first surface and a second surface which are opposite along the thickness direction of the plate body; the first surface faces the battery cell;

reinforcing ribs; disposed on the second surface; the reinforcing ribs protrude from the second surface in a direction away from the first surface;

the inserting projection is arranged on the reinforcing rib; the inserting projection is provided with an inserting groove; one side of the insertion groove, back to the first surface, is open and is used for being in insertion fit with the connecting column.

2. The power battery module side plate of claim 1, wherein the insertion projection comprises two first insertion plates arranged oppositely and a second insertion plate arranged between the two first insertion plates; the first plug board is vertically connected with the second plug board; the inserting groove is arranged on the second inserting plate.

3. The power battery module side plate of claim 2, wherein the reinforcing ribs comprise a plurality of vertical ribs extending in a height direction of the plate body; the two first plug boards are respectively arranged on the adjacent vertical ribs; the extending direction of the first inserting plate is consistent with the extending direction of the vertical ribs.

4. The power battery module side plate of claim 3, wherein a plurality of the vertical ribs form a plurality of spaced first rib elements; the first rib unit comprises two vertical ribs; the interval between the first rib unit is greater than the interval between two vertical ribs in the first rib unit.

5. The power battery module side plate of claim 4, wherein the reinforcing ribs further comprise a plurality of transverse ribs extending perpendicular to the vertical ribs; the plurality of transverse ribs are uniformly arranged at intervals along the height direction of the plate body.

6. The power battery module side plate of claim 1, wherein the power battery module further comprises a power battery module upper cover plate disposed above the battery cells; the power battery module side plate also comprises a connecting strip arranged at the top of the plate body; and a slot which is used for being matched with the upper cover plate of the power battery module in an inserting way is arranged in the connecting strip.

7. The power battery module side plate of claim 1, further comprising: two convex parts respectively arranged on the opposite sides of the plate body; the first surface and the second surface are located between the two convex parts; the convex connection part is provided with a through hole extending along the vertical direction; the through hole is used for being connected with a box body of the power battery system.

8. The power battery module side plate of claim 1, wherein the plate body is located on the first plate surface; the inserting protrusion is arranged on the lower portion of the second surface.

9. The power battery module side plate of claim 1, wherein the plate body is provided with a slot for the liquid cooling plate to pass through; the inserting protrusion is arranged above the slot.

10. A power battery module, its characterized in that, it includes:

a liquid-cooled plate; the liquid cooling plate is provided with a first plate surface facing upwards; the first plate surface is provided with a connecting column extending along the vertical direction;

the battery unit is arranged on the first plate surface, and the connecting column is positioned on the outer side of the battery unit;

the power battery module side plate of any one of claims 1 to 9; the side plate is located between the battery cell and the connection post.

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