End plate and battery module

Abstract

The utility model provides an end plate and a battery module, and the end plate comprises a plate body which comprises a first surface; the connecting part is arranged on the first surface along the length direction of the plate body, and is formed by bending two ends of the plate body in the width direction towards the direction of the plate body; and the supporting part is arranged on the first surface along the width direction of the plate body, and is formed by bending one end of the plate body in the length direction towards the direction of the plate body. According to the end plate, the connecting part in the length direction of the plate body and the supporting part in the width direction of the plate body are arranged on the plate body, the overall strength of the end plate can be improved, and therefore the technical problem that the end plate made of metal plates is prone to deformation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing and manufacturing, in particular to an end plate and a battery module. Background Art

[0002] Lithium-ion battery modules usually require two end plates to be installed at both ends of the battery module to compress the battery cells and fix the battery module. The end plates are usually made of aluminum alloy and are formed in one piece by die casting or melt casting. They have a simple structure, high strength, and do not require additional surface processing. However, the material cost is high. Using sheet metal materials instead of aluminum alloy materials to process end plates can reduce material costs and improve product competitiveness. However, since sheet metal materials are thin and easy to deform, during the installation of the battery module, it is easy to cause the entire battery module to be installed unqualified. Utility Model Content

[0003] The embodiments of the utility model provide an end plate and a battery module, which can improve the technical problem that the existing sheet metal material end plate is easy to deform.

[0004] In a first aspect, an embodiment of the present utility model provides an end plate, comprising:

[0005] A plate body including a first surface;

[0006] A connecting portion is arranged on the first surface along the length direction of the plate body and is formed by bending two ends of the plate body in the width direction toward the plate body;

[0007] The support portion is arranged on the first surface along the width direction of the plate body and is formed by bending one end of the plate body in the length direction toward the plate body.

[0008] In an embodiment of the utility model, by respectively providing a connecting portion along the length direction of the plate body and a supporting portion along the width direction on the plate body, the overall strength of the end plate can be improved, thereby improving the technical problem of easy deformation of the end plate of the sheet metal material.

[0009] In one embodiment, the connecting portion is parallel to the length direction of the plate body; and / or

[0010] The support portion is parallel to a width direction of the plate body.

[0011] In an embodiment of the utility model, by making the connection part parallel to the length direction of the plate body and making the support part parallel to the width direction of the plate body, the strength of the end plate in the length direction and the width direction can be further improved, thereby improving the overall strength of the end plate.

[0012] In one embodiment, both the connecting portion and the supporting portion are hollow structures; and / or

[0013] The connecting portion is formed by bending both ends of the plate body in the width direction toward the plate body and welding to the plate body; and / or

[0014] The support portion is formed by bending one end of the plate body in the length direction toward the plate body and welding to the plate body; and / or

[0015] Both ends of the support portion along the width direction of the plate body are welded to the connection portion.

[0016] In the embodiment of the utility model, the connection part and the support part are set as a hollow structure, which can reduce the material cost. The connection part is welded to the plate body, the support part is welded to the plate body, and the two ends of the support part along the width direction of the plate body are welded to the connection part, which can improve the connection strength, thereby improving the overall strength of the end plate.

[0017] In one embodiment, a reinforcement member is further disposed on the first surface, and the reinforcement member is disposed along the width direction of the plate body.

[0018] In the embodiment of the present utility model, by arranging a reinforcement piece on the plate body along the width direction of the plate body, the strength of the plate body can be further improved.

[0019] In one embodiment, the reinforcing member and the supporting portion are arranged at two ends of the plate body in the length direction opposite to each other; and / or

[0020] The reinforcement member is a U-shaped plate, and two sides of the U-shaped plate are respectively welded to the plate body; and / or

[0021] Both ends of the reinforcing member along the width direction of the plate body are welded to the connecting portion.

[0022] In the embodiment of the utility model, by arranging the reinforcing member and the supporting part on both sides of the length direction of the plate body respectively, the strength of the plate body in the width direction can be improved. By welding the reinforcing member to the plate body and the connecting part, the connection strength can be improved, thereby improving the overall strength of the end plate.

[0023] In one embodiment, the plate body is a sheet metal part; and / or

[0024] The reinforcement member is a sheet metal member.

[0025] In the embodiment of the utility model, the material cost can be effectively reduced by making the plate body and the support part using sheet metal.

[0026] In one embodiment, a through hole is provided in the connecting portion, and the through hole passes through the connecting portion along the extension direction of the connecting portion. The end plate also includes a fixing rod, a first positioning member and a second positioning member. The first positioning member and the second positioning member are respectively provided at the openings at both ends of the through hole, and both have through holes connected to the through hole. The fixing rod includes a cap portion and a rod portion, and the rod portion passes through the through hole of the first positioning member and the through hole in turn, and passes out from the through hole of the second positioning member, and the cap portion abuts against the surface of the first positioning member facing away from the second positioning member.

[0027] In the embodiment of the utility model, the fixing rod passes through the through hole of the connecting part, and the two ends of the fixing rod are respectively connected to the bottom plate and the cover plate of the battery module, so that the end plate can be fixed in the battery module. The fixing rod can be quickly installed and fixed in the through hole by the first positioning member, the second positioning member and the cap.

[0028] In one embodiment, the second positioning member is disposed in the through hole, and one end of the second positioning member close to the first positioning member is concave to form a conical groove, and the through hole of the second positioning member extends from the bottom of the conical groove and passes through the end surface of the second positioning member facing away from the first positioning member.

[0029] In the embodiment of the utility model, the tapered groove on the first positioning member can guide the fixing rod to quickly enter the through hole of the second positioning member, thereby achieving rapid positioning and extension of the fixing rod in the through hole of the connecting portion.

[0030] In one embodiment, the second positioning member is disposed in the through hole and is movable along the depth direction of the through hole; and / or

[0031] The first positioning member is fixedly connected to the connecting portion forming the through hole and the plate body.

[0032] In an embodiment of the utility model, by setting the second positioning member to be movable along the depth direction of the through hole, when installing the fixing rod, the second positioning member does not need to be placed in the through hole first. After the fixing rod extends out of the through hole, the end of the fixing rod extending out of the through hole is quickly inserted into the through hole of the second positioning member, and then the second positioning member is moved into the through hole along the depth direction of the through hole, so that the fixing rod can be quickly inserted into the through hole of the second positioning member, and the second positioning member can be quickly positioned and installed in the through hole.

[0033] In one embodiment, the reinforcement is provided with an output pole base mounting hole; and / or

[0034] The reinforcement is provided with a hoisting hole.

[0035] In the embodiment of the utility model, the output pole base mounting hole can be used to install the output pole base of the battery module. The hoisting hole can be used to hoist the end plate into the battery module.

[0036] In one embodiment, a wire tie plate is provided on the first surface, the wire tie plate extends along the width direction of the plate body and is perpendicular to the plate body, the wire tie plate is formed by bending the other end of the plate body in the length direction, and the wire tie plate is provided with wire tie holes.

[0037] In an embodiment of the present invention, the wire tie holes can be used to fix the wire harness in the battery module.

[0038] In one embodiment, a limiting block is protruded from the connecting portion and arranged opposite to it.

[0039] In the embodiment of the utility model, the relatively arranged limit blocks can facilitate the installation and positioning of the steel belt for fixing the battery module. When the connecting part is a sheet metal part, due to its thin thickness, the limit blocks can be easily processed by convexly arranging the limit blocks on the connecting part.

[0040] In a second aspect, an embodiment of the present invention provides a battery module, comprising the above-mentioned end plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a structural schematic diagram of an end plate provided in an embodiment of the utility model;

[0043] Figure 2 It is an exploded view of the end plate provided in the embodiment of the utility model.

[0044] Figure markings: 1-plate body; 2-connecting part; 21-through hole; 3-supporting part; 31-output pole base mounting hole; 32-lifting hole; 4-fixing rod; 41-cap part; 42-rod part; 5-first positioning member; 6-second positioning member; 61-conical groove; 7-through hole; 8-wire binding plate; 81-wire binding hole; 9-limiting block; 10-reinforcement member. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0046] First, see Figures 1-2 , an embodiment of the utility model provides an end plate, comprising:

[0047] The board body 1 comprises a first surface;

[0048] The connecting portion 2 is arranged on the first surface along the length direction of the plate body 1 and is formed by bending both ends of the plate body 1 in the width direction toward the plate body 1;

[0049] The support portion 3 is disposed on the first surface along the width direction of the plate body 1 and is formed by bending one end of the plate body 1 in the length direction toward the plate body 1 .

[0050] It can be understood that the shape of the plate body 1 in the present application can be a rectangle. The connection part 2 and the support part 3 in the present application can be square or curved. The square connection part 2 and the support part 3 can enhance the strength of the end plate more. In the present application, the connection part 2 is arranged along the length direction of the plate body 1, and the connection part 2 can be parallel to the length direction of the plate body 1, or the angle between the connection part 2 and the length direction of the plate body 1 is less than 45°. In the present application, the support part 3 is arranged along the width direction of the plate body 1, and the support part 3 can be parallel to the width direction of the plate body 1, or the angle between the support part 3 and the width direction of the plate body 1 is less than 45°. The width and length of the connection part 2 and the support part 3 can be set as needed. The longer the length of the connection part 2 and the support part 3 extending on the plate body 1, the better the strength enhancement effect on the plate body 1.

[0051] In one embodiment, the connecting portion 2 is parallel to the length direction of the plate body 1; and / or

[0052] The support portion 3 is parallel to the width direction of the plate body 1 .

[0053] In one embodiment, the connecting portion 2 and the supporting portion 3 are both hollow structures; and / or

[0054] The connecting portion 2 is formed by bending both ends of the plate body 1 in the width direction toward the plate body 1 and welding to the plate body 1; and / or

[0055] The support portion 3 is formed by bending one end of the plate body 1 in the length direction toward the plate body 1 and welding the end to the plate body 1; and / or

[0056] The supporting portion 3 is welded to the connecting portion 2 at both ends along the width direction of the plate body 1 .

[0057] It can be understood that the connection part 2 and the support part 3 can be formed by bending sheet metal materials, so as to have a hollow structure. The size of the hollow structure can be set as needed. The length of the support part 3 can extend to the connection part 2 and be welded to the connection part 2, so as to further improve the strength of the end plate. The welding connection between the connection part 2, the support part 3 and the plate body 1, and the welding connection between the connection part 2 and the support part 3, can be welded in the entire area of ​​the contact area between the two, or can be welded in a partial area of ​​the contact area between the two, such as spot welding and intermittent line welding in the contact area. Welding in a partial area of ​​the contact area can save materials and reduce costs.

[0058] In one embodiment, a reinforcement member 10 is further disposed on the first surface, and the reinforcement member 10 is disposed along the width direction of the plate body 1 .

[0059] It can be understood that the reinforcement 10 is arranged along the width direction of the plate body 1, and the reinforcement 10 can be parallel to the width direction of the plate body 1, or the angle between the reinforcement 10 and the width direction of the plate body 1 can be less than 45°. The reinforcement 10 and the support portion 3 are both arranged along the width direction of the plate body 1, and the two can be parallel to each other, or there can be an angle less than 90°. When the reinforcement 10 and the support portion 3 are parallel to each other and parallel to the width direction of the plate body 1, the two have the best effect of strengthening the strength of the plate body 1. The distance between the reinforcement 10 and the support portion 3 can be set as needed, and when the two are respectively located at both ends of the length direction of the plate body 1, the strength strengthening effect of the plate body 1 is best. The width and length of the reinforcement 10 can be set as needed. The longer the length of the reinforcement 10 extending on the plate body 1, the better the strength strengthening effect of the plate body 1.

[0060] In one embodiment, the reinforcing member 10 and the supporting portion 3 are disposed at two ends of the plate body 1 in the length direction opposite to each other; and / or

[0061] The reinforcement member 10 is a U-shaped plate, and two sides of the U-shaped plate are respectively welded to the plate body 1; and / or

[0062] The reinforcing member 10 is welded to the connecting portion 2 at both ends of the plate body 1 in the width direction.

[0063] It can be understood that the reinforcement 10 and the support part 3 are arranged at the two ends of the length direction of the plate body 1, that is, the reinforcement 10 is arranged at the opposite end of the end where the support part 3 is located in the length direction of the plate body 1. The reinforcement 10 can be arranged at the edge of one end of the length direction of the plate body 1, or at a certain distance from the edge of one end of the length direction of the plate body 1. The reinforcement 10 is a U-shaped plate, and the U-shaped plate can form a square groove or a curved groove. The reinforcement 10 forming a square groove can enhance the strength of the end plate. The number of reinforcements 10 can be set as needed. The more reinforcements 10, the higher the strength of the end plate. The length of the reinforcement 10 can extend to the connecting part 2 and be welded to the connecting part 2, so as to further enhance the strength of the end plate. The welding of the reinforcement 10 with the plate body 1 and the connecting part 2 can be performed in the entire area of ​​the contact area between the two, or in a partial area of ​​the contact area between the two, such as spot welding and intermittent line welding in the contact area. Welding in a partial area of ​​the contact area can save materials and reduce costs.

[0064] In one embodiment, the plate body 1 is a sheet metal part; and / or

[0065] The reinforcement member 10 is a sheet metal member.

[0066] The connection part 2, the support part 3 and the plate body 1 are connected by welding. The connection part 2, the support part 3 and the plate body 1 can be welded in the entire connection area, or in a partial area, such as spot welding or intermittent line welding. Welding the connection part 2, the support part 3 and the plate body 1 in a partial area can save materials and reduce costs.

[0067] In one embodiment, a through hole 21 is provided in the connecting portion 2, and the through hole 21 passes through the connecting portion 2 along the extension direction of the connecting portion 2. The end plate also includes a fixing rod 4, a first positioning member 5 and a second positioning member 6. The first positioning member 5 and the second positioning member 6 are respectively provided at the openings at both ends of the through hole 21, and both have a through hole 7 connected to the through hole 21. The fixing rod 4 includes a cap portion 41 and a rod portion 42. The rod portion 42 passes through the through hole 7 of the first positioning member 5 and the through hole 21 in turn, and passes out from the through hole 7 of the second positioning member 6. The cap portion 41 abuts against the surface of the first positioning member 5 facing away from the second positioning member 6.

[0068] It can be understood that the connecting portion 2 can be formed by bending a sheet metal material and then connected to the plate body 1 to form a through hole 21. The size of the rod portion 42 of the fixing rod 4 can match the size of the through hole 7 of the first positioning member 5 and the second positioning member 6, so that the fixing rod 4 can be smoothly inserted into the through hole 7 without eccentricity, so as to facilitate the fast connection of the fixing rod 4 with the bottom plate and the cover plate of the battery module. The length of the rod portion 42 and the cap portion 41 can be set as needed, as long as the connection between the fixing rod 4 and the bottom plate and the cover plate of the battery module can be stable.

[0069] In one embodiment, the second positioning member 6 is disposed in the through hole 21, and one end of the second positioning member 6 close to the first positioning member 5 is concave to form a conical groove 61, and the through hole 7 of the second positioning member 6 extends from the bottom of the conical groove 61 and passes through the end surface of the second positioning member 6 facing away from the first positioning member 5.

[0070] It can be understood that the outer peripheral surface of the second positioning member 6 can contact the connecting portion 2 and the plate body 1 forming the through hole 21, so that the second positioning member 6 can be fixed in the through hole 21, thereby playing the role of fixing the fixing rod 4. The height of the second positioning member 6 can be set as needed. The depth and inclination of the tapered groove 61 can be set as needed.

[0071] In one embodiment, the second positioning member 6 is disposed in the through hole 21 and is movable along the depth direction of the through hole 21; and / or

[0072] The first positioning member 5 is fixedly connected to the connecting portion 2 forming the through hole 21 and the plate body 1 .

[0073] It is understood that the shape of the first positioning member 5 can be set as needed, and can be a plate or a three-dimensional structure. The first positioning member 5 can be welded to the connecting portion 2 forming the through hole 21 and the plate body 1, thereby increasing the connection strength. The first positioning member 5 can also be integrally provided with the connecting portion 2, formed by bending, and then welded to the plate body 1, thereby reducing welding points, facilitating processing, and reducing costs.

[0074] In one embodiment, the reinforcement member 10 is provided with an output pole base mounting hole 31; and / or

[0075] The reinforcement member 10 is provided with a hoisting hole 32 .

[0076] It is understood that the size, number and position of the output pole base mounting hole 31 on the support portion 3 can be set according to the size and position of the output pole base. The size, number and position of the hoisting hole 32 on the support portion 3 can be set as needed.

[0077] In one embodiment, a wire tie plate 8 is provided on the first surface, the wire tie plate 8 extends along the width direction of the plate body 1 and is perpendicular to the plate body 1, the wire tie plate 8 is formed by bending the other end of the plate body 1 in the length direction, and the wire tie plate 8 is provided with a wire tie hole 81.

[0078] It is understandable that the length of the wire binding plate 8 can be set as required. The size of the wire binding hole 81 can be set as required.

[0079] In one embodiment, a limiting block 9 is protruded from the connecting portion 2 and arranged opposite to each other.

[0080] It can be understood that the steel strip is used to fix the battery in the battery module, and the distance between the relatively arranged limit blocks 9 can be set according to the width of the steel strip. The number of groups of relatively arranged limit blocks 9 can be set according to the number of steel strips. The positions of the relatively arranged limit blocks 9 on the connecting part 2 can be at both ends and the middle of the connecting part 2. The shape and size of the limit blocks 9 can be set as needed, and the steel strip can be clamped.

[0081] In a second aspect, an embodiment of the present invention provides a battery module, comprising the above-mentioned end plate.

[0082] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An end plate, characterized in that: include: A plate body including a first surface; A connecting portion is arranged on the first surface along the length direction of the plate body and is formed by bending two ends of the plate body in the width direction toward the plate body; The support portion is arranged on the first surface along the width direction of the plate body and is formed by bending one end of the plate body in the length direction toward the plate body.

2. The end plate according to claim 1, characterized in that: The connecting portion is parallel to the length direction of the plate body; and / or The support portion is parallel to a width direction of the plate body.

3. The end plate according to claim 1, characterized in that: The connecting portion and the supporting portion are both hollow structures; and / or The connecting portion is formed by bending both ends of the plate body in the width direction toward the plate body and welding to the plate body; and / or The support portion is formed by bending one end of the plate body in the length direction toward the plate body and welding to the plate body; and / or Both ends of the support portion along the width direction of the plate body are welded to the connection portion.

4. The end plate according to claim 1, characterized in that: A reinforcement is also provided on the first surface, and the reinforcement is provided along the width direction of the plate body.

5. The end plate according to claim 4, characterized in that: The reinforcing member and the supporting portion are arranged at two ends of the plate body in the length direction opposite to each other; and / or The reinforcement member is a U-shaped plate, and two sides of the U-shaped plate are respectively welded to the plate body; and / or Both ends of the reinforcing member along the width direction of the plate body are welded to the connecting portion.

6. The end plate according to claim 4, characterized in that: The plate body is a sheet metal part; and / or The reinforcement member is a sheet metal member.

7. The end plate according to claim 1, characterized in that: A through hole is provided in the connecting portion, and the through hole penetrates the connecting portion along the extension direction of the connecting portion. The end plate also includes a fixing rod, a first positioning member and a second positioning member. The first positioning member and the second positioning member are respectively provided at the openings at both ends of the through hole, and both have through holes connected to the through hole. The fixing rod includes a cap portion and a rod portion, and the rod portion passes through the through hole of the first positioning member and the through hole in turn, and passes out from the through hole of the second positioning member, and the cap portion abuts against the surface of the first positioning member facing away from the second positioning member.

8. The end plate according to claim 7, characterized in that: The second positioning member is disposed in the through hole, and one end of the second positioning member close to the first positioning member is concave to form a tapered groove, and the through hole of the second positioning member extends from the bottom of the tapered groove and passes through the end surface of the second positioning member away from the first positioning member.

9. The end plate according to claim 7, characterized in that: The second positioning member is disposed in the through hole and is movable along the depth direction of the through hole; and / or The first positioning member is fixedly connected to the connecting portion forming the through hole and the plate body.

10. The end plate according to claim 4, characterized in that The reinforcement is provided with an output pole base mounting hole; and / or The reinforcement is provided with a hoisting hole.

11. The end plate according to claim 1, characterized in that A wire binding plate is provided on the first surface. The wire binding plate extends along the width direction of the plate body and is perpendicular to the plate body. The wire binding plate is formed by bending the other end of the plate body in the length direction. The wire binding plate is provided with wire binding holes.

12. The end plate according to claim 1, characterized in that The connecting portion is provided with a corresponding limiting block.

13. A battery module, characterized in that: Comprising the end plate according to any one of claims 1-12.

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