CN221176439U

CN221176439U - Battery module end plate with stable structure and battery module

Info

Publication number: CN221176439U
Application number: CN202322968197.5U
Authority: CN
Inventors: 刘婷; 黄绳刚; 谢炜
Original assignee: Dongguan Litai Technology Co ltd
Current assignee: Dongguan Litai Technology Co ltd
Priority date: 2023-11-02
Filing date: 2023-11-02
Publication date: 2024-06-18
Anticipated expiration: 2033-11-02

Abstract

The utility model discloses a battery module end plate with stable structure and a battery module, comprising an end plate body, wherein the end plate body is a sheet metal part, the end plate body comprises a first surface for contacting with an electric core, a second surface for mounting and positioning, two sides of the second surface are provided with side plates, the top is provided with a top plate, the bottom is provided with a bottom plate, a plurality of structural reinforcements are arranged between the top plate and the side plates, one end of each structural reinforcement is connected with the top plate, the other end of each structural reinforcement is connected with the bottom plate, and the structural reinforcements support the top plate and the bottom plate and are used for improving the structural strength of the end plate body. According to the utility model, the structural reinforcement is arranged between the top plate and the bottom plate, so that the bending resistance and torsion resistance of the whole end plate can be effectively improved, the stability of the structure is enhanced, and the end plate can keep the shape under impact loading or uneven loading, thereby ensuring the safety and performance of the battery module.

Description

Battery module end plate with stable structure and battery module

Technical Field

The utility model relates to the technical field of battery modules, in particular to a battery module end plate with a stable structure and a battery module.

Background

The battery pack is an integral device formed by combining a plurality of battery cells (electric cores). The battery cell refers to an independent battery unit, and the battery pack is formed by connecting a plurality of battery cells together to increase the overall electric energy storage capacity or output power. The battery pack is generally composed of battery cells of the same type and the same specification, such as a lithium iron phosphate battery, a lithium ion battery, a lead acid battery, a nickel hydrogen battery, or the like. The battery cells are connected together in a serial or parallel manner to form the overall structure of the battery pack.

Prismatic batteries require end plates to secure the position of the cells and maintain the stability of the overall structure during assembly. Conventional solutions include the use of aluminum profiles or plastic end plates that are aluminum drawn, but these methods all require open molding and consume significant time and cost. To solve this problem, more and more applications begin to use sheet metal solutions.

The sheet metal end plate has the main advantages that the sheet metal end plate does not need to be subjected to die sinking manufacture and can be directly processed through processes such as bending, cutting and welding. This provides a significant saving in time and cost required to manufacture the end plates. In addition, the metal plate end plate has good plasticity and adaptability, and can be customized and processed according to the size and shape requirements of different battery packs.

However, sheet metal end plates also have some drawbacks, since the sheet metal is formed by bending a sheet metal, deformation is easy to occur, and thus the fixing strength of the module is affected.

The above disadvantages are to be improved.

Disclosure of Invention

In order to solve the problem that the sheet metal end plate is formed by bending a sheet metal and is easy to deform so as to influence the fixing strength of a module, the utility model provides a battery module end plate with a stable structure and a battery module.

The technical scheme of the utility model is as follows:

The utility model provides a stable in structure's battery module end plate, includes the end plate body, the end plate body is the sheet metal component, the end plate body is including being used for with the first face of electric core contact for the second face of installation location, the second face both sides are provided with the curb plate, and the top is provided with the roof, and the bottom is provided with the bottom plate, the roof with be provided with a plurality of structural reinforcement between the curb plate, every structural reinforcement one end with the roof is connected, the other end with the bottom plate is connected, structural reinforcement supports the roof with the bottom plate is used for improving the structural strength of end plate body.

Further, the side plates are in contact with the outer walls of adjacent structural reinforcements, which are used to support the side plates.

Further, the structural reinforcement is tubular, through holes are correspondingly formed in the top plate and the bottom plate at the structural reinforcement, and the inner diameter of the structural reinforcement is not smaller than the diameter of the through holes.

Further, the through holes are waist holes, and the length direction of the waist holes is parallel to the width direction of the top plate.

Further, the diameter of the structural reinforcement is not greater than the width of the side plates.

Further, a plurality of limit grooves are formed in the side plates, and the width of each limit groove is equal to that of the corresponding binding belt.

Further, the middle of the end plate body is hollowed out, and the width of two sides of the end plate body is larger than the diameter of the structural reinforcement.

Further, a plurality of connecting holes are further formed in the top plate and the bottom plate, and the connecting holes are unthreaded holes or threaded holes.

Further, the structural reinforcement is welded to the end plate body.

The battery module with the stable structure comprises a battery module end plate with the stable structure, a pair of battery module end plates with the stable structure are arranged, a plurality of battery cells connected in series are arranged between the end plate bodies, a binding belt is arranged in the limiting groove, and the binding belt bypasses the structure reinforcing piece to pull the two end plate bodies close together for binding the battery cells.

According to the scheme, the end plate body is manufactured through a sheet metal process, die sinking is not needed, and manufacturing is convenient; the structural strength of the end plate body can be enhanced by arranging the top plate, the bottom plate and the side plates, and the end plate body can be connected with other cell protection pieces; by placing the structural reinforcement between the top plate and the bottom plate, the bending resistance and torsion resistance of the whole end plate can be effectively improved, the stability of the structure is enhanced, and the end plate can be ensured to maintain the shape under impact loading or uneven loading, so that the safety and performance of the battery module are ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic front perspective view of embodiment 1 of the present utility model;

FIG. 2 is a schematic view of the back perspective structure of embodiment 1 of the present utility model;

fig. 3 is a schematic perspective view of embodiment 2 of the present utility model.

Wherein, each reference sign in the figure: 1. an end plate body; 101. a first face; 102. a second face; 103. a side plate; 104. a top plate; 105. a bottom plate; 106. a through hole; 107. a limit groove; 108. a connection hole; 2. a structural reinforcement; 3. a battery cell; 4. a tie; 5. a connecting plate; 6. an aluminum row.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.

Example 1

As shown in fig. 1 and 2, a battery module end plate with stable structure according to an embodiment of the present utility model includes an end plate body 1, where the end plate body 1 is a sheet metal part, the end plate body 1 includes a first surface 101 for contacting with a battery cell 3, a second surface 102 for mounting and positioning, two sides of the second surface 102 are provided with side plates 103, a top plate 104 is provided at the top, a bottom plate 105 is provided at the bottom, a plurality of structural reinforcements 2 are provided between the top plate 104 and the side plates 103, one end of each structural reinforcement 2 is connected with the top plate 104, the other end is connected with the bottom plate 105, and the structural reinforcements 2 support the top plate 104 and the bottom plate 105 for improving the structural strength of the end plate body 1.

In this embodiment, the end plate body 1 is manufactured by a sheet metal process, and does not need to be opened, thereby facilitating manufacturing. By providing the top plate 104, the bottom plate 105 and the side plates 103, the structural strength of the end plate body 1 can be enhanced on the one hand, and on the other hand, the end plate body can be used for connecting with other cell 3 protection pieces. By placing the structural reinforcement 2 between the top plate 104 and the bottom plate 105, the bending resistance and torsion resistance of the entire end plate can be effectively improved, the stability of the structure can be enhanced, and the end plate can be ensured to maintain its shape under impact loading or uneven loading, thereby ensuring the safety and performance of the battery module.

In this embodiment, 2 structural reinforcements 2 are provided near the two ends of the top plate 104. In practical use, the number of structural reinforcement members 2 may be determined according to the width of the end plate body 1.

In a preferred example, the side plates 103 are in contact with the outer walls of the adjacent structural reinforcement 2, the outer walls of the structural reinforcement 2 being used to support the side plates 103.

In this embodiment, the overall structural stability of the end plate body 1 is further enhanced, so that each part plays its maximum role, and the operating efficiency of the structural reinforcement 2 is improved. In addition, the side plate 103 contacts with the structural reinforcement 2, so that a part of load of the side plate 103 is dispersed to the structural reinforcement 2, the stress of the side plate 103 is reduced, the bearing capacity and deformation resistance of the side plate 103 are enhanced, a more stable and firm structure is formed, and the overall structural strength and stability of the end plate of the battery module are improved.

As shown in fig. 1, in a preferred embodiment, the structural reinforcement 2 is tubular, and the top plate 104 and the bottom plate 105 are correspondingly provided with through holes 106 at the position of the structural reinforcement 2, and the inner diameter of the structural reinforcement 2 is not smaller than the diameter of the through holes 106. The through holes 106 are waist holes, and the length direction of the waist holes is parallel to the width direction of the top plate 104. The through holes 106 and the structural reinforcement 2 are internally penetrated by fasteners, the fasteners comprise screws, two ends of each screw are connected with bolts in a threaded manner, and the two bolts are respectively positioned at the top of the top plate 104 and the bottom of the bottom plate 105.

In this embodiment, the tubular structure provides a better strength-to-weight ratio. Because tubular structures can withstand more pressure than entirely solid structures when subjected to equal weight loads. In addition, the tubular structure can bear the twisting and bending forces better, and compared with a solid structure, the tubular structure can reduce the use of materials and reduce the cost without sacrificing the performance. The waist holes allow certain movement space for corresponding fasteners, so that the installation process is more flexible, and the integral structure can be better adjusted and optimized. The waist hole can provide a bit displacement space when impact or vibration occurs, and further provides a certain protection for the battery pack.

As shown in fig. 1, in a preferred example, the diameter of the structural reinforcement 2 is not greater than the width of the side plates 103. The side plate 103 is provided with a plurality of limit grooves 107, and the width of the limit grooves 107 is equal to the width of the binding belt 4. In this embodiment, the mechanical strength of the structural reinforcement 2 is smaller than the width of the side plate 103, i.e. the structural reinforcement 2 does not exceed the boundary of the end plate body 1, the volume of the end plate body 1 is less affected, and the side plate 103 can protect the structural reinforcement 2. Limiting grooves 107 are formed in two ends of the side plate 103 and can accommodate limiting bands 4, so that the battery module is conveniently fixed.

As shown in fig. 1 and 2, in a preferred embodiment, the middle of the end plate body 1 is hollowed out, and the width of both sides of the end plate body 1 is larger than the diameter of the structural reinforcement 2. In this embodiment, through the middle part fretwork with end plate body 1, can save material and reduce whole weight, reduce manufacturing cost and reduce battery module's weight, easy to assemble and transportation. The width of the two sides of the end plate body 1 is larger than the diameter of the structural reinforcement 2, so that the stability of the structure of the end plate body 1 can be ensured, and the whole structure is more stable and strong.

As shown in fig. 1 and 2, in a preferred embodiment, a plurality of connection holes 108 are further formed in the top plate 104 and the bottom plate 105, and the connection holes 108 are light holes or threaded holes, the light holes are used for tying a strap, fixing a wire harness, and the screw holes are used for connecting fasteners such as bolts, screws, and the like. Through the plurality of connecting holes 108 formed on the top plate 104 and the bottom plate 105, the battery module can be installed by using fasteners, so that the connection of the end plates is more flexible and firm, and the battery module is convenient to assemble and disassemble; and the connection of the binding belt is convenient, the wiring and the wiring are convenient, and the use convenience is further improved.

In a preferred embodiment, the structural reinforcement 2 is welded to the end plate body 1. The structural reinforcement 2 is connected with the end plate body 1 by welding, so that the connection is convenient and stable, and the durability and stability of the structure can be ensured. At this time, the fastener connecting structure reinforcing member 2 and the end plate body 1 may not be required.

Example 2

As shown in fig. 1, a battery module with stable structure in an embodiment of the present utility model includes the above battery module end plates with stable structure, a pair of battery module end plates with stable structure is provided, a plurality of series-connected electric cores 3 are disposed between two end plate bodies 1, adjacent electric cores 3 are electrically connected through an aluminum row 6, a binding belt 4 is disposed in a limit slot 107, and the binding belt 4 bypasses the structural reinforcement 2 to draw the two end plate bodies 1 close for binding the electric cores 3.

In this embodiment, 8 electric cores 3 are provided, 8 electric cores 3 are arranged between two battery module end plates with stable structures, so that the electric cores 3 can be effectively protected, and the risk that the electric cores 3 are damaged in the use or transportation process is reduced. The ribbon 4 draws two end plate bodies 1 close by surrounding the outer sides of the end plate bodies 1, the structural reinforcement 2 and the battery cell 3 for fastening the battery cell 3, ensuring the stability of the battery cell 3 inside the battery module, preventing the displacement of the battery cell 3 in the use process, and further ensuring the stability and safety of the battery module. The cylindrical structural reinforcement 2 reduces wear to the tie 4. The bottom of bottom plate 105 is provided with connecting plate 5, and connecting plate 5 transversal is "Z" font, and the top of connecting plate 5 is good the top all is provided with the mounting hole, and connecting plate 5 top is connected with bottom plate 105 through the fastener that runs through structural reinforcement 2, and connecting plate 5 bottom passes through the quick-witted case connection of bolt and battery module.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a stable in structure's battery module end plate, its characterized in that, includes the end plate body, the end plate body is the sheet metal component, the end plate body is including being used for with the first face of electric core contact for the second face of installation location, the second face both sides are provided with the curb plate, and the top is provided with the roof, and the bottom is provided with the bottom plate, the roof with be provided with a plurality of structural reinforcement between the curb plate, every structural reinforcement one end with the roof is connected, the other end with the bottom plate is connected, structural reinforcement supports the roof with the bottom plate is used for improving the structural strength of end plate body.

2. The structurally stable battery module end plate according to claim 1, wherein the side plates are in contact with the outer walls of the adjacent structural reinforcement members, the outer walls of the structural reinforcement members supporting the side plates.

3. The battery module end plate of claim 1, wherein the structural reinforcement is tubular, the top plate and the bottom plate are correspondingly provided with through holes at the structural reinforcement, and the inner diameter of the structural reinforcement is not smaller than the diameter of the through holes.

4. A structurally stable battery module end plate according to claim 3, wherein the through holes are waist holes, and the length direction of the waist holes is parallel to the width direction of the top plate.

5. A structurally stable battery module end plate according to claim 3, wherein the diameter of the structural reinforcement is not greater than the width of the side plates.

6. The structurally stable battery module end plate according to any one of claims 1-5, wherein the side plates are provided with a plurality of limiting grooves, the width of which corresponds to the width of the tie.

7. The structurally stable battery module end plate according to any one of claims 1-5, wherein the end plate body is hollowed out in the middle, and the width of the two sides of the end plate body is larger than the diameter of the structural reinforcement.

8. The structurally stable battery module end plate according to any one of claims 1-5, wherein the top plate and the bottom plate are further provided with a plurality of connecting holes, and the connecting holes are light holes or threaded holes.

9. The structurally stable battery module end plate according to any one of claims 1-5, wherein the structural reinforcement is welded to the end plate body.

10. A structurally stable battery module, characterized by comprising a structurally stable battery module end plate as claimed in any one of claims 1-9, wherein a pair of structurally stable battery module end plates are provided, a plurality of series-connected cells are arranged between two end plate bodies, a binding belt is arranged in a limiting groove, and the binding belt bypasses the structural reinforcement to pull the two end plate bodies close together for binding the cells.