Battery module side plate assembly and battery module

Abstract

The utility model provides a battery module side plate assembly and battery module wherein the battery module side plate assembly comprises a first side plate and a second side plate, the first side plate has an integrated U-shaped structure, the second side plate is arranged on the opening side of the U-shaped structure, and the second side plate and the first side plate together enclose an accommodation space for accommodating a battery, the second side plate is provided with a penetrating glue injection hole, and the side face of the glue injection hole is provided with a notch part used for being communicated with the containing space. The utility model solves the problem of poor strength of the side plate of the battery module in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to a battery module side plate assembly and a battery module. Background Art

[0002] Traditional battery module assembly often uses a welding installation method of two side panels and two end panels. At least four welds need to be welded during welding. The entire assembly process takes a lot of time, and the structural strength of the assembly is easily affected by the welding quality, resulting in problems such as low assembly efficiency and poor structural reliability. Utility Model Content

[0003] The main purpose of the utility model is to provide a battery module side plate assembly and a battery module to solve the problem of poor strength of the battery module side plate in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery module side panel assembly is provided, including a first side panel and a second side panel, the first side panel has an integrated U-shaped structure, the second side panel is arranged on the opening side of the U-shaped structure, and together with the first side panel, it forms a storage space for accommodating batteries, the second side panel has a glue injection hole arranged through it, and the side surface of the glue injection hole has a notch portion for connecting with the storage space.

[0005] Furthermore, the notch is located on a side surface of one end of the glue injection hole in a penetrating direction.

[0006] Furthermore, the glue injection hole longitudinally penetrates the upper and lower end surfaces of the second side plate, and the notch portion is located on the side of the glue injection hole facing the accommodating space.

[0007] Furthermore, the side of the glue injection hole has an inclined surface, and the glue injection hole also has a side surface arranged opposite to the inclined surface; and along the direction approaching the accommodating space, the inclined surface is inclined toward the direction approaching the side surface.

[0008] Furthermore, the side surface is also an inclined surface, and along the direction approaching the accommodating space, the inclined surfaces on both sides are inclined in a direction approaching each other.

[0009] Further, one of the end of the U-shaped structure and the end of the second side plate has a protrusion, and the other of the end of the U-shaped structure and the end of the second side plate has a sliding groove, and the protrusion is located in the sliding groove.

[0010] Furthermore, the end of the protrusion has a hook-shaped structure, the slide groove has a hook-shaped recess matching the hook-shaped structure, and when the protrusion is located in the slide groove, the hook-shaped structure is located in the hook-shaped recess.

[0011] Furthermore, there are multiple protrusions and slide grooves, and protrusions or slide grooves are provided at both ends of the U-shaped structure, and the protrusions or slide grooves at both ends extend in a direction approaching each other.

[0012] Furthermore, the battery module side panel assembly also includes a reinforcement member, which is arranged in the glue injection hole.

[0013] According to another aspect of the utility model, a battery module is provided, comprising the above-mentioned battery module side plate assembly and a bottom plate, wherein the notch is located on the side of the glue injection hole at one end facing the bottom plate.

[0014] By applying the technical solution of the utility model, by providing an integrated U-shaped structure and a second side panel with a glue injection hole, the battery module side panel assembly can be quickly assembled and the structure is firm, that is, during assembly, it is only necessary to install the second side panel to the open side of the U-shaped structure, and then welding and other operations can be performed as needed to complete the assembly of the external frame, so that the number of welds is reduced and the integrated form has higher structural strength. Moreover, after the first side panel and the second side panel are assembled, glue can be injected into the gap between the battery cell and the bottom panel through the glue injection hole and its notch, so as to cooperate with the aforementioned side panels and further improve the overall strength of the battery module. This is beneficial to improving assembly efficiency on the one hand and enhancing the reliability of the battery module side panel assembly on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic structural diagram of a first side plate of the utility model is shown;

[0017] Figure 2 An axonometric view of a first side panel is shown;

[0018] Figure 3 shows a top view of the second side panel;

[0019] Figure 4 showing a bottom view of the second side panel;

[0020] Figure 5 An axonometric view of the second side panel is shown;

[0021] Figure 6 shows an assembly diagram of the second side plate and the reinforcement member;

[0022] Figure 7 An exploded view of the second side panel and the reinforcement is shown;

[0023] Figure 8 An assembly diagram of a battery module side panel assembly is shown;

[0024] Fig. 9An exploded view of the battery module side panel assembly is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. First side plate; 11. Protrusion; 111. Hook-shaped structure; 20. Second side plate; 21. Glue injection hole; 22. Notch; 23. Slide groove; 231. Hook-shaped recess; 30. Reinforcement member. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0030] In order to solve the problem of poor strength of battery module side panels in the prior art, the utility model provides a battery module side panel assembly and a battery module, wherein the battery module includes the following battery module side panel assembly, and the battery module may also include battery cells, bottom plates and other structures.

[0031] like Figures 1 to 9 A battery module side panel assembly shown includes a first side panel 10 and a second side panel 20, wherein the first side panel 10 has an integrated U-shaped structure, the second side panel 20 is arranged on the opening side of the U-shaped structure, and together with the first side panel 10, forms a storage space for accommodating batteries, the second side panel 20 has a glue injection hole 21 that is arranged through, and the side surface of the glue injection hole 21 has a notch portion 22 for communicating with the storage space.

[0032] This embodiment provides a second side panel 20 with an integrated U-shaped structure and a glue injection hole 21, so that the battery module side panel assembly can be quickly assembled and the structure is firm, that is, during assembly, it is only necessary to install the second side panel 20 to the open side of the U-shaped structure, and then welding and other operations can be performed as needed to complete the assembly of the external frame, so that the number of welds is reduced and the integrated form has higher structural strength. Moreover, after the first side panel 10 and the second side panel 20 are assembled, glue can be injected into the gap between the battery cell and the bottom plate through the glue injection hole 21 and its notch 22, so as to cooperate with the cooperation between the aforementioned side panels, and further improve the overall strength of the battery module. In this way, on the one hand, it is conducive to improving the assembly efficiency, and on the other hand, it enhances the reliability of the battery module side panel assembly.

[0033] It should be noted that, in the present embodiment, the battery module side panel assembly is placed vertically, that is, the accommodating space is surrounded by the first side panel 10 and the second side panel 20, which are open at the top and bottom. The first side panel 10 includes a first side, a second side and a third side which are bent and connected in sequence, wherein the second side is parallel to the second side panel 20, and the first side and the third side are parallel to each other and perpendicular to the second side panel 20. The first side, the second side and the third side are integrally formed to form a U-shaped structure, and four bolt holes are provided at the four corners of the first side panel 10, such as Fig. 9 The vertical direction shown is the vertical direction of the first side plate 10 and the second side plate 20. The bolt hole penetrates the first side plate 10 along the vertical direction of the first side plate 10 so that it can be connected with the bottom plate and other components. Fig. 9 From the upper left to the lower right direction, the width direction is Fig. 9 The length direction of the second side plate 20 is the width direction of the first side plate 10. Fig. 9 From the lower left to the upper right direction, the thickness direction is Figure 3 In the up and down directions, Figure 3 The surface shown is the upper end surface of the second side plate 20. Figure 4 The surface shown is the lower end surface of the second side plate 20 .

[0034] Preferably, in this embodiment, a plurality of weight-reducing holes penetrating in the up-down direction are provided on the upper end face of the second side panel 20, such as triangular holes, trapezoidal holes, square holes, etc. The sides of the weight-reducing holes are not connected to the outside, and only the upper and lower ends are connected to the outside. In this way, on the one hand, the weight of the battery module side panel assembly can be reduced, and on the other hand, reinforcing ribs are formed between the weight-reducing holes, and the reinforcing ribs are in a relatively inclined form, so that lateral forces from different directions can be absorbed, which is beneficial to improve the structural strength and thus protect the battery cells. At the same time, the part of the side panel of the first side panel 10 that is opposite to the second side panel 20, that is, the upper end face of the second side of the first side panel 10 is provided with the same weight-reducing holes. Of course, weight-reducing holes can also be provided on the first side, the third side, and other sides of the first side panel 10 according to actual use requirements, and the specific shape and size of the weight-reducing holes can be adjusted accordingly as needed.

[0035] Preferably, the glue injection hole 21 of this embodiment is arranged at the center of the second side plate 20, so that the glue can flow evenly to both sides of the glue injection hole 21. Different from the weight-reducing hole, the size of the glue injection hole 21 of this embodiment is slightly larger than the weight-reducing hole, and a notch 22 needs to be provided at the bottom of the glue injection hole 21 to achieve the effect of injecting glue to the bottom of the battery cell.

[0036] like Figure 4 and Figure 5 As shown, in this embodiment, the notch 22 is located on the side of one end of the injection hole 21 in the penetration direction, and more preferably, the notch 22 is located on the side of one end of the injection hole 21 facing the bottom plate; the injection hole 21 longitudinally penetrates the upper and lower end surfaces of the second side plate 20, and the notch 22 is located on the side of the injection hole 21 facing the accommodation space. That is to say, the injection hole 21 extends in the up-down direction, from the upper end surface of the second side plate 20 to the lower end surface of the second side plate 20, and the notch 22 is located at the side of the lower end of the second side plate 20 facing the battery cell in the accommodation space, so that the notch 22 can be connected with the gap at the bottom of the battery cell, so that it can be used as an injection hole for glue to flow into the accommodation space, ensuring that the glue is filled into the accommodation space. In this way, when the glue is injected from the upper end of the injection hole 21, the glue can flow out from the notch 22 at the bottom of the injection hole 21, enter the accommodation space, and connect and reinforce the battery cell, the side plate and the bottom plate, thereby improving the strength of the battery module side plate assembly.

[0037] In this embodiment, the side of the glue injection hole 21 has an inclined surface, and the glue injection hole 21 also has a side surface arranged opposite to the inclined surface; and along the direction close to the accommodating space, the inclined surface is inclined in the direction close to the above-mentioned side surface. In other words, in order to further improve the strength of the second side plate 20 while ensuring the smoothness of injection, the shape of the glue injection hole 21 is not a conventional round hole or square hole, but the side of the glue injection hole 21 is arranged to form an angle with the thickness direction of the second side plate 20, so that the glue injection hole 21 has a good glue filling function and has a certain strength, thereby protecting the battery cell in the accommodating space. Of course, the glue injection hole 21 can also be set as a round hole or a square hole, which can also achieve the purpose of filling glue into the accommodating space.

[0038] Preferably, the side surface is also an inclined surface, that is, both sides of the injection hole 21 have inclined surfaces. The opposite sides here refer to the other two sides of the injection hole 21 that are not facing the accommodation space, that is, Figure 3 and Figure 4 The left and right sides of the second side plate 20 are inclined in the direction close to the accommodation space. In other words, the opening cross-section of the glue injection hole 21 of this embodiment is an isosceles trapezoid, and the short side of the trapezoid is closer to the accommodation space than the long side. The notch 22 is arranged on the short side of the trapezoid, which reduces the influence of the notch 22 on the strength of the second side plate 20 and ensures the smoothness of the glue injection.

[0039] In this embodiment, one of the end of the U-shaped structure and the end of the second side plate 20 has a protrusion 11, and the other of the end of the U-shaped structure and the end of the second side plate 20 has a slide groove 23, and the protrusion 11 is located in the slide groove 23. In this embodiment, the protrusion 11 is arranged at the end of the first side and / or the third side of the first side plate 10, and extends from the upper end surface of the first side plate 10 to the lower end surface, such as Figure 1 , Figure 2 As shown; the chute 23 is provided at the end of the length direction of the second side plate 20, as Figure 3 , Figure 4 As shown, the second side panel 20 extends from the upper end surface to the lower end surface, and the shapes of the protrusion 11 and the slide groove 23 are set correspondingly. During assembly, the second side panel 20 is inserted into the first side panel 10 from above or below the first side panel 10, and the protrusion 11 extends into the slide groove 23, so that the second side panel 20 and the first side panel 10 are fixed into a square-shaped accommodation space with upper and lower openings, so as to accommodate and install the battery cell. Of course, the setting positions of the protrusion 11 and the slide groove 23 can also be interchanged, that is, the slide groove 23 is set on the first side panel 10, and the protrusion 11 is set on the second side panel 20, which can also achieve the purpose of fixing. In addition to the setting method of the protrusion 11 and the slide groove 23, other structural forms can also be adopted, such as a guide rail structure or a snap-on structure.

[0040] In order to further improve the connection strength of the first side plate 10 and the second side plate 20, the end of the protrusion 11 has a hook-shaped structure 111, and the slide groove 23 has a hook-shaped recess 231 matching the hook structure 111. When the protrusion 11 is located in the slide groove 23, the hook structure 111 is located in the hook-shaped recess 231. The hook structure 111 has a limiting effect in both lateral directions of the first side plate 10, so that along the length direction of the second side plate 20, the relative movement between the first side plate 10 and the second side plate 20 is limited by the cooperation of the hook structure 111 and the hook-shaped recess 231, ensuring that the first side plate 10 and the second side plate 20 can only slide up and down relative to each other before welding or other operations are performed, and cannot be separated laterally, that is, avoiding the situation where the protrusion 11 is laterally separated from the slide groove 23 and causing damage to the battery module side plate assembly, ensuring the stability and reliability of the overall structure after the side plates are connected, and also conducive to ensuring the overall structural strength after subsequent assembly is completed.

[0041] The hook structure 111 of this embodiment is configured to protrude toward the receiving space, and correspondingly, the hook recess 231 is also recessed toward the receiving space, so that the hook structure 111 and the hook recess 231 are matched inwardly, and the reliability of the structural strength is higher than that of the outward matching. Of course, the hook structure 111 and the hook recess 231 can also be configured as other mutually matching structural forms, such as an L-shaped slide groove and an L-shaped protrusion, which can simultaneously play a limiting role in the length direction and the width direction of the first side plate 10.

[0042] In this embodiment, there are multiple protrusions 11 and slide grooves 23, and the two adopt a one-to-one matching structure. Specifically, in this embodiment, protrusions 11 are provided at both ends of the U-shaped structure, and the protrusions 11 at both ends extend in a direction close to each other. Specifically, in this embodiment, two protrusions 11 and two slide grooves 23 are provided respectively, and the protrusions 11 are provided at the ends of the first side and the third side of the first side plate 10, and the protrusions 11 have a certain angle relative to the extension direction of the first side and the third side. The extension direction of the protrusions 11 in this embodiment is perpendicular to the extension direction of the first side and the third side, that is, the protrusions 11 are perpendicular to the side surfaces of the first side and the third side, so that the two protrusions 11 at the ends of the first side and the third side can extend in a direction close to each other, so as to better match with the second side plate 20. Correspondingly, two chutes 23 are respectively arranged at the two ends of the length direction of the second side plate 20, the opening directions of the chutes 23 are respectively facing the two protrusions 11, and the chutes 23 longitudinally penetrate the second side plate 20, so that the two ends of the second side plate 20 are respectively fixed to the first side plate 10 through the cooperation between the protrusions 11 and the chutes 23, so as to realize the reliable connection between the first side plate 10 and the second side plate 20. After the protrusion 11 is inserted into the chutes 23, it can be welded at the connection between the protrusion 11 and the chutes 23 along the up and down direction of the first side plate 10, so as to further improve the reliability of the battery module side plate assembly.

[0043] like Figures 6 to 9 As shown, in the present embodiment, the battery module side panel assembly further includes a reinforcement member 30, and the reinforcement member 30 is disposed in the glue injection hole 21. The reinforcement member 30 is not always disposed in the glue injection hole 21, but is installed in the glue injection hole 21 after the glue injection is completed. Specifically, before the glue injection is performed, the reinforcement member 30 is taken out of the glue injection hole 21, and the glue injection hole 21 is in a completely empty state. After the glue injection is completed, the reinforcement member 30 is installed in the glue injection hole 21, and since the shape and size of the reinforcement member 30 completely match the shape and size of the glue injection hole, the installation of the reinforcement member 30 can avoid the deformation of the second side panel 20 at the glue injection hole 21 to a certain extent, thereby facilitating the improvement of the structural strength of the second side panel 20, and further improving the overall structural strength of the battery module side panel assembly.

[0044] Since the injection hole 21 of the present embodiment is arranged to be an isosceles trapezoidal structure, the reinforcement 30 is also arranged to be an isosceles trapezoidal block structure. Considering the requirements of the reinforcement 30 itself in terms of weight reduction and strength, weight reduction holes are also arranged on the reinforcement 30, and inclined reinforcement ribs are formed between the weight reduction holes, thereby achieving a weight reduction effect while ensuring the overall structural strength of the reinforcement 30.

[0045] In another embodiment, a battery module is provided, including the above-mentioned battery module side panel assembly and a bottom panel; wherein the notch portion 22 is located on the side of the glue injection hole 21 at one end facing the bottom panel.

[0046] Preferably, the battery module further comprises a battery cell, and the battery cell is located in a receiving space formed by the side plate assembly and the bottom plate of the battery module.

[0047] The installation process of the battery module of this embodiment is as follows: install the first side panel 10 along the four bolt holes, install the battery cell, insert the second side panel 20, and perform weld welding on both sides of the second side panel 20, and inject glue at the upper end of the injection hole 21 of the second side panel 20. The glue flows out from the notch 22 at the bottom of the second side panel 20 into the gap between the bottom of the battery cell and the bottom plate in the accommodating space. After the injection of glue is completed, insert the reinforcement 30 into the injection hole 21.

[0048] It should be noted that, the multiple in the above embodiments refers to at least two.

[0049] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0050] 1. Solve the problem of poor strength of the side panels of the battery module in the prior art;

[0051] 2. Make the battery module side panel assembly able to be assembled quickly and with a reliable structure;

[0052] 3. Improve the strength of the battery module side panel assembly, thereby improving assembly efficiency and enhancing the reliability of the battery module side panel assembly.

[0053] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0056] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery module side plate assembly, characterized in that: include: A first side plate (10), the first side plate (10) having an integrated U-shaped structure; A second side plate (20), the second side plate (20) being arranged on the opening side of the U-shaped structure and together with the first side plate (10) enclosing a storage space for accommodating batteries, the second side plate (20) having a glue injection hole (21) extending therethrough, and a side surface of the glue injection hole (21) having a notch portion (22) for communicating with the storage space.

2. The battery module side plate assembly according to claim 1, characterized in that: The notch portion (22) is located on the side surface of one end of the glue injection hole (21) in the penetrating direction.

3. The battery module side plate assembly according to claim 2, characterized in that: The glue injection hole (21) vertically penetrates the upper and lower end surfaces of the second side plate (20), and the notch portion (22) is located on a side of the glue injection hole (21) facing the accommodating space.

4. The battery module side plate assembly according to claim 1, characterized in that: The side of the glue injection hole (21) has an inclined surface, and the glue injection hole (21) also has a side surface arranged opposite to the inclined surface; and along the direction approaching the accommodating space, the inclined surface is inclined in the direction approaching the side surface.

5. The battery module side plate assembly according to claim 4, characterized in that: The side surfaces are also inclined surfaces, and along the direction approaching the accommodation space, the inclined surfaces on both sides are inclined in a direction approaching each other.

6. The battery module side plate assembly according to claim 1, characterized in that: One of the end of the U-shaped structure and the end of the second side plate (20) has a protrusion (11), and the other of the end of the U-shaped structure and the end of the second side plate (20) has a slide groove (23), and the protrusion (11) is located in the slide groove (23).

7. The battery module side plate assembly according to claim 6, characterized in that: The end of the protrusion (11) has a hook-shaped structure (111), the slide groove (23) has a hook-shaped recess (231) matching the hook-shaped structure (111), and when the protrusion (11) is located in the slide groove (23), the hook-shaped structure (111) is located in the hook-shaped recess (231).

8. The battery module side plate assembly according to claim 6, characterized in that: There are a plurality of protrusions (11) and slide grooves (23), and both ends of the U-shaped structure are provided with protrusions (11) or slide grooves (23), and the protrusions (11) or slide grooves (23) at both ends extend in directions approaching each other.

9. The battery module side plate assembly according to claim 1, characterized in that: The battery module side plate assembly further comprises a reinforcing member (30), and the reinforcing member (30) is arranged in the glue injection hole (21).

10. A battery module, characterized in that: It comprises the battery module side plate assembly and the bottom plate according to any one of claims 1 to 9, wherein the notch portion (22) is located on the side of the glue injection hole (21) facing one end of the bottom plate.

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