CN217589294U

CN217589294U - Outer frame and battery module

Info

Publication number: CN217589294U
Application number: CN202221216328.3U
Authority: CN
Inventors: 黎文; 李凡; 陈智伟; 陈朝海
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-10-14
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses an outer frame and battery module belongs to battery module technical field. This outer frame includes end plate and curb plate, and the curb plate includes curb plate body, and curb plate body extends along the second direction, is equipped with the through-hole on the curb plate body to set up first opening on the curb plate body around the through-hole, first opening is the U-shaped structure, divide into folded piece and mounting with the curb plate body, and the folded piece is buckled to keeping away from first open-ended direction along the department of meeting of folded piece and mounting, in order to form the hangers. The side plate body and the hanging lugs are integrated due to the arrangement of the side plates, so that the number of stamping dies is reduced, a customized positioning jig is avoided, and the manufacturing cost is effectively reduced. And the arrangement of the side plates also reduces welding seams required by welding the hangers and the side plate body, thereby improving the yield and the production efficiency.

Description

Outer frame and battery module

Technical Field

The utility model relates to a battery module technical field especially relates to an outer frame and battery module.

Background

Nowadays, the outer frame of a battery module is generally manufactured by wrapping and overlapping left and right end plates and front and rear side plates. When the side plate is manufactured, the side plate body and the suspension loop are generally required to be respectively punched by using a side plate body stamping die and a suspension loop stamping die, and then the suspension loop is welded on the side plate body.

However, the manufacturing process of the side plate needs to use two sets of stamping dies to stamp respectively, and is complicated and high in manufacturing cost. When the independent hanging lug is welded on the side plate body, a plurality of welding lines are needed, so that the insulating film on the back surface of the side plate body is easily welded through, the problem of inconsistent welding quality is also caused, and the yield and the production efficiency of the side plate are reduced. Need customize the location smelting tool at welding hangers and curb plate body to ensure the position precision of hangers on the curb plate body, further increased the cost of manufacture.

Therefore, an outer frame and a battery module are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide an outer frame can solve outer frame cost of manufacture height, the low and poor problem of yields of production efficiency.

Another object of the utility model is to provide a battery module can reduce the cost of manufacture of battery module, improves production efficiency and yields.

In order to realize the purpose, the following technical scheme is provided:

an outer frame, a battery pack is arranged in the outer frame to form a battery module, comprising:

the end plate extends along a first direction, and positioning grooves are formed in two ends, opposite to each other, of the end plate along the first direction;

the side plate comprises a side plate body, the side plate body extends along a second direction, positioning pieces are arranged at two ends of the side plate body, which are oppositely arranged along the second direction, and the positioning pieces can be arranged in the positioning grooves; the side plate comprises a side plate body and is characterized in that a through hole is formed in the side plate body, a first opening is formed in the side plate body and surrounds the through hole, the first opening is of a U-shaped structure, the side plate body is divided into a folding piece and a fixing piece, and the folding piece is bent towards the direction away from the first opening along the joint of the folding piece and the fixing piece to form a hanging lug.

Furthermore, second openings are formed in two ends of the first opening along the joint of the folding piece and the fixing piece, the folding piece is bent towards the direction close to the folding piece along the joint of the second opening and the folding piece to form a reinforcing piece, and the reinforcing piece is connected with the fixing piece.

Further, the reinforcing member is welded to the fixing member.

Furthermore, each side plate body is provided with two hanging lugs, and the two hanging lugs are arranged at intervals along the second direction.

Furthermore, the top of end plate is equipped with the groove of stepping down, the groove of stepping down is used for holding connecting seat in the battery module, the connecting seat with the busbar of group battery links to each other.

Further, the end plate is equipped with be equipped with on one side of constant head tank notch and strengthen the subassembly, it includes many partition muscle to strengthen the subassembly.

Furthermore, the groove wall of the positioning groove comprises a first surface and a second surface, the first surface extends along the first direction, the second surface extends along the second direction, and a chamfer is arranged between the first surface and the second surface.

Further, the second surface is provided with a through groove along the vertical direction.

Furtherly, the both ends that the curb plate body set up along vertical direction is relative all are equipped with the sand grip, the sand grip is equipped with to keeping away from one side bending type of hangers in order to form the locating part, the inner wall of locating part with the outer wall butt of group battery.

A battery module comprises the outer frame.

Compared with the prior art, the beneficial effects of the utility model are that:

the outer frame that this embodiment provided, including end plate and curb plate, the end plate extends along the first direction, is equipped with the constant head tank on the relative both ends that set up of first direction of end plate edge, and the curb plate includes the curb plate body, and the curb plate body extends along the second direction, and the curb plate all is equipped with the setting element along the relative both ends that set up of second direction, and in the constant head tank can be located to the setting element to prepositioning when realizing end plate and curb plate overlap joint, thereby improved the preparation precision of outer frame. And the curb plate body is equipped with the through-hole to set up first opening on the curb plate body around the through-hole, first opening is the U-shaped structure, divide into folded piece and mounting with the curb plate body, and the folded piece is buckled to the direction of keeping away from first opening along the department of meeting of folded piece and mounting, in order to form the hangers. The side plate body and the hanging lugs are integrated due to the arrangement of the side plates, so that the number of stamping dies is reduced, a customized positioning jig is avoided, and the manufacturing cost is effectively reduced. And the setting of above-mentioned curb plate has still reduced hangers and the required welding seam of curb plate body welding to the yields and production efficiency have been improved.

The battery module that this embodiment provided through using above-mentioned outer frame, has reduced the cost of manufacture of battery module, has improved the production efficiency and the yields of battery module.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention 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 for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an outer frame according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an end plate according to an embodiment of the present invention.

Reference numerals:

1. an end plate; 2. a side plate;

11. positioning a groove; 111. a first side; 112. a second face; 1121. a through groove; 12. a yielding groove; 13. a reinforcement assembly; 131. separating ribs; 132. a first reinforcing rib; 133. a second reinforcing rib; 134. a third reinforcing rib; 135. a fourth reinforcing rib; 136. fifthly, strengthening the tendons; 14. connecting holes;

21. a side plate body; 211. a positioning member; 2111. a weight reduction groove; 212. a stopper; 213. a folding member; 2131. a reinforcement; 214. a fixing member; 215. a through hole; 22. and (5) hanging a lug.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-2, the present embodiment provides an outer frame in which a battery pack is disposed to form a battery module. Including end plate 1 and curb plate 2, end plate 1 extends along the first direction, and end plate 1 is equipped with constant head tank 11 along the relative both ends that set up of first direction, and curb plate 2 includes curb plate body 21, and curb plate body 21 extends along the second direction, and curb plate 2 all is equipped with setting element 211 along the relative both ends that set up of second direction, and setting element 211 can locate in constant head tank 11 to realize the prepositioning when

end plate

1 and 2 laps of curb plate, thereby improved the preparation precision of outer frame. The side plate body 21 is provided with a through hole 215, and a first opening is formed in the side plate body 21 around the through hole 215, the first opening is in a U-shaped structure and divides the side plate body 21 into a folding piece 213 and a fixing piece 214, and the folding piece 213 is bent towards a direction away from the first opening along a joint of the folding piece 213 and the fixing piece 214 to form the hanging lug 22. The side plate body 21 and the hanging lug 22 are integrated into a whole due to the arrangement of the side plate 2, so that the number of stamping dies is reduced, a customized positioning jig is avoided, and the manufacturing cost is effectively reduced. And the arrangement of the side plate 2 also reduces welding seams required by welding the hanging lugs 22 and the side plate body 21, thereby improving the yield and the production efficiency.

Specifically, the outer frame can be disposed on the battery case through the through holes 215 by the first fasteners to achieve the installation of the battery module in the battery case. Further, the first fastening member may be a bolt, or may be another member having a fastening function, such as a pin, and is not limited to this.

Further optionally, a second opening is formed at each of two ends of the first opening along a joint of the folding member 213 and the fixing member 214, the folding member 213 is bent towards a direction close to the folding member 213 along the joint of the second opening and the folding member 213 to form the reinforcing member 2131, and the reinforcing member 2131 is connected with the fixing member 214. The arrangement of the reinforcing piece 2131 improves the connecting strength of the hanging lugs 22 and the side plate body 21, and effectively prolongs the service life of the side plate 2. Further optionally, the reinforcing member 2131 is welded to the fixing member 214 to realize the connection of the reinforcing member 2131 and the fixing member 214.

Further optionally, each side plate body 21 is provided with two hanging lugs 22, and the two hanging lugs 22 are arranged at intervals along the second direction, so that the stability of the installation of the battery module is improved.

Further, the positioning member 211 is connected to the groove wall of the positioning groove 11 by welding, so that the connection between the end plate 1 and the side plate 2 is strengthened. And the welding area and the non-welding area of the end plate 1 are separated by the groove wall of the positioning groove 11, so that the end plate 1 can be independently processed according to the processing requirements of different areas, the two areas do not interfere with each other, the balance between the assembly requirement and the processing requirement is realized, and the comprehensive cost of the outer frame in manufacturing is reduced.

Further optionally, the top end of the end plate 1 is provided with a yielding groove 12, the yielding groove 12 is used for accommodating a connecting seat in the battery module, and the connecting seat is connected with a bus bar of the battery pack to realize the connection between the battery pack and the outer frame, so as to form the battery module.

In order to completely cover the battery pack, the outer frame comprises two end plates 1 and two side plates 2, wherein the two end plates 1 are arranged at intervals along the second direction, and the two side plates 2 are arranged at intervals along the first direction. Furthermore, two end plates 1 oppositely arranged along the second direction are respectively provided with a yielding groove 12, and the two yielding grooves 12 are arranged in a staggered manner, so that two busbars in the battery pack are connected with an outer frame, and the connection between the battery pack and the outer frame is enhanced.

Further optionally, be equipped with on one side that end plate 1 was equipped with constant head tank 11 notch and strengthen subassembly 13, strengthen subassembly 13 including many separating muscle 131, when the group battery inflation, the group battery extrudees the end plate 1 at both ends, and the pressure that end plate 1 received can be followed and separated muscle 131 release, alleviates the stress concentration's of end plate 1 the condition, has improved end plate 1's structural strength, has avoided end plate 1 to damage, has improved the durability and the security of battery module, has reduced the cost of maintaining the change.

Further optionally, many partition ribs 131 have divided into a plurality of enhancement regions with end plate 1, all are provided with many strengthening ribs in every enhancement region, the setting of many strengthening ribs for the pressure that end plate 1 received not only can be through the release of partition rib 131, can also release through the strengthening rib, has further strengthened end plate 1's structural strength. Specifically, two separating ribs 131 are provided, the two separating ribs 131 are arranged at intervals along a first direction, and divide the end plate 1 into a first reinforcing area, a second reinforcing area and a third reinforcing area, and a first reinforcing rib 132 extending along the first direction is arranged in the first reinforcing area; second reinforcing ribs 133 and circular third reinforcing ribs 134 are arranged in the second reinforcing area, and the second reinforcing ribs 133 are connected with the third reinforcing ribs 134 and the separating ribs 131 or the upper end part and the lower end part of the end plate 1; the third reinforcing region is provided with fourth reinforcing beads 135 extending in the first direction. Further, each of the partition ribs 131 is provided with a fifth reinforcing rib 136 having a ring shape.

Further optionally, the end of the end plate 1 is provided with a connecting hole 14 along the vertical direction, and the outer frame can pass through the connecting hole 14 through a second fastener and be arranged on the battery box body, so as to realize the installation of the battery module in the battery box body. Further, the second fastening member may be a bolt, or may be another member having a fastening function such as a pin, and is not limited to this.

Further optionally, the groove wall of the positioning groove 11 includes a first surface 111 and a second surface 112, the first surface 111 extends along a first direction, the second surface 112 extends along a second direction, and a chamfer is disposed between the first surface 111 and the second surface 112 to increase the contact surface between the positioning element 211 and the positioning groove 11, so as to facilitate welding and prevent the positioning element 211 from being damaged by sharp corners.

Further optionally, the second surface 112 is provided with a through groove 1121 in the vertical direction, so that the welding region of the side plate 2 is separated from the non-welding region, the side plate 2 can be processed separately according to the processing requirements of different regions, the two regions do not interfere with each other, the balance between the assembly requirement and the processing requirement is realized, and the comprehensive cost of the outer frame during manufacturing is further reduced.

Further optionally, a lightening slot 2111 is provided on the outer wall of the positioning member 211, thereby lightening the weight of the outer frame.

Further optionally, both ends that curb plate body 21 set up along vertical direction relatively all are equipped with the sand grip, and the sand grip is buckled to keeping away from the one side that is equipped with hangers 22 in order to form locating part 212, and the inner wall of locating part 212 and the outer wall butt of group battery to the removal of restriction group battery in vertical direction, thereby realize the stable of group battery and place in the outer frame.

The embodiment also provides a battery module, which comprises the outer frame so as to ensure the manufacturing precision of the battery module.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. An outer frame, battery group locate in the outer frame to form battery module, its characterized in that includes:

the end plate (1) extends along a first direction, and positioning grooves (11) are formed in two ends, opposite to each other, of the end plate (1) along the first direction;

the side plate (2) comprises a side plate body (21), the side plate body (21) extends along a second direction, positioning pieces (211) are arranged at two opposite ends of the side plate body (21) along the second direction, and the positioning pieces (211) can be arranged in the positioning grooves (11); be equipped with through-hole (215) on curb plate body (21), center on through-hole (215) are in be equipped with first opening on curb plate body (21), first opening is the U-shaped structure, will curb plate body (21) divide into folded piece (213) and mounting (214), folded piece (213) are followed folded piece (213) with the department of meeting of mounting (214) is to keeping away from first open-ended direction is buckled to form hangers (22).

2. The outer frame of claim 1, characterized in that two ends of the first opening are provided with second openings along the connection between the folding member (213) and the fixing member (214), the folding member (213) is bent towards the direction close to the folding member (213) along the connection between the second opening and the folding member (213) to form a reinforcing member (2131), and the reinforcing member (2131) is connected with the fixing member (214).

3. The outer frame of claim 2, characterized in that the stiffeners (2131) are welded with the fasteners (214).

4. The outer frame as claimed in claim 1, characterised in that two said lugs (22) are provided on each said side plate body (21), said two lugs (22) being spaced apart in said second direction.

5. The outer frame according to claim 1, characterized in that the top end of the end plate (1) is provided with a relief groove (12), the relief groove (12) is used for accommodating a connecting seat in the battery module, and the connecting seat is connected with a bus bar of the battery pack.

6. The outer frame according to claim 1, characterised in that the side of the end plate (1) provided with the notches of the positioning slots (11) is provided with a reinforcement assembly (13), said reinforcement assembly (13) comprising a plurality of separating ribs (131).

7. The outer frame of claim 1, characterized in that the groove wall of the positioning groove (11) comprises a first face (111) and a second face (112), the first face (111) extending in the first direction and the second face (112) extending in the second direction, a chamfer being provided between the first face (111) and the second face (112).

8. The outer frame of claim 7, characterised in that said second face (112) is provided with through slots (1121) in the vertical direction.

9. The outer frame according to claim 1, characterized in that the two ends of the side plate bodies (21) which are opposite to each other in the vertical direction are provided with protruding strips, the protruding strips are bent to the side away from the side where the hanging lugs (22) are arranged to form limiting pieces (212), and the inner walls of the limiting pieces (212) are abutted with the outer walls of the battery packs.

10. A battery module comprising the outer frame according to any one of claims 1 to 9.