Shell assembly structure of battery module

Abstract

The utility model discloses a shell assembly structure of a battery module, which is used for accommodating one or more battery modules. The shell assembly structure comprises a lower shell and an upper shell. The lower shell is provided with an opening, the edge of the opening is provided with a glue groove and guide columns, and the multiple guide columns are located on the outer side of the glue groove. The upper shell is provided with a protruding piece and guide holes, the protruding piece is located at the bottom of the upper shell, the multiple guide holes are located on the outer side of the protruding piece, the protruding piece corresponds to the glue groove in position and extends into the glue groove, the multiple guide holes correspond to the multiple guide columns in position, the multiple guide columns are arranged in the multiple guide holes in a penetrating mode, and therefore a containing space is defined in the state that the upper shell is connected with the lower shell. The battery case is used for accommodating one or more battery modules. Therefore, according to the utility model, dislocation, deflection or non-uniform gaps generated by combination of the shell during assembly can be avoided, the assembly difficulty and complexity are reduced, and the product assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a casing assembly structure, especially a casing assembly structure for a battery module. BACKGROUND

[0002] As an indispensable energy source in modern life, batteries are widely used in various fields such as electric vehicles and electronic products. In response to different products, the process flow is also different. When electronic parts are diversified and complex, it will cause problems such as increased installation complexity, increased volume and weight, etc. Since the internal structure of the battery must be completely sealed, the traditional setting in the assembly of the battery module or the battery pack is to fix the upper and lower covers with glue, and jigs or clamps must be used for fixation. After the glue is dry, the jigs or clamps can be removed to achieve the effect of waterproof sealing. During the waiting period for the glue to dry, the battery module cannot be moved at will and must be waited for the glue to solidify, which requires time or the use of other instruments, making the overall process more complex.

[0003] Therefore, the utility model is aimed at the above-mentioned problems of the prior art and further proposes a casing assembly structure of a battery module that can reduce the types of components, improve manufacturing capacity, and reduce complexity to solve the problems of the prior art. SUMMARY

[0004] In view of the above problems, the utility model aims to provide a casing assembly structure of a battery module that is quick and accurate to assemble, lightweight, and highly automated, and is designed in a modular manner. The upper casing and the lower casing are positioned by guide columns (hot riveting columns), which have precise positioning effects and foolproof functions in the sealing process. This can reduce the types and number of screws and nuts, reduce the overall weight and cost, and increase the use of space. Hot melting fixation does not require the use of additional jigs or clamps for fixation, and the time for waiting for the glue to harden can be saved. This can also prevent misalignment and skewing of the upper and lower covers and optimize the problem of uneven gaps, simplify the process difficulty and complexity, and improve the product assembly efficiency.

[0005] In order to achieve the above-mentioned purposes, the utility model provides a kind of shell assembly structure of battery module, for accommodating one or more battery modules, the shell assembly structure includes lower shell, upper shell and fixed riveting head.Lower shell has an opening, the edge of the opening is provided with a glue groove and multiple guide columns, the multiple guide columns are located the outside of the glue groove.Upper shell is provided with a tab and multiple guide holes, the tab is located the bottom of the upper shell, the multiple guide holes are located the outside of the tab, the tab corresponds the position of the glue groove and extends into the glue groove, the multiple guide holes correspond the position of the multiple guide columns and the multiple guide columns are arranged in the multiple guide holes, so that the state of the upper shell is connected to the lower shell defines a containing space for accommodating one or more battery modules.Fixed riveting head is formed at the top end of the multiple guide columns, and is fixed on the surface of the multiple guide holes, to achieve the fixing effect.

[0006] In some embodiments, the shell assembly structure of battery module further includes a sealing layer arranged in the glue groove of the lower shell for bonding the tab of the upper shell, thereby achieving the sealing effect.

[0007] In some embodiments, the material of the sealing layer is glue material or thermoplastic plastic.

[0008] In some embodiments, the sealing layer is an annular gasket arranged in the glue groove of the lower shell, so that the annular gasket fills the glue groove, and the annular gasket is extruded by the tab of the upper shell to form a waterproof seal.

[0009] In some embodiments, the sealing layer is a hot melt material arranged in the glue groove of the lower shell, which hot melt adheres the tab of the upper shell.

[0010] In some embodiments, the fixed riveting head includes a semicircular riveting head, an annular riveting head, a flat head riveting head, a sunken riveting head, a stud riveting head and a flanged riveting head.

[0011] In some embodiments, the multiple guide columns are hot riveting columns, and the top end of the multiple guide columns forms the fixed riveting head under the conditions of hot air cold riveting, infrared hot riveting, ultrasonic riveting or pulse hot riveting.

[0012] In some embodiments, the tab is annular, and the tab surrounds the bottom of the upper shell, the glue groove surrounds the edge of the opening, and the tab corresponds to the glue groove and is engaged.

[0013] According to the above, the shell assembly structure of the battery module can improve the problems of assembly mispositioning, skewing and uneven gap, and can avoid using additional jigs or clamps, thereby reducing the types of components, and without waiting for the glue to harden / solidify, the overall assembly time can be reduced and the assembly process can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 EXPLANATION OF DRAWINGS Figure 1 ;

[0015] Figure 2 EXPLANATION OF DRAWINGS Figure 2 ;

[0016] Figure 3 EXPLANATION OF DRAWINGS

[0017] Figure 4 EXPLANATION OF DRAWINGS Figure 3 EXPLANATION OF DRAWINGS

[0018] Figure 5 EXPLANATION OF DRAWINGS Figure 3 EXPLANATION OF DRAWINGS

[0019] Figure 6 EXPLANATION OF DRAWINGS Figure 3 EXPLANATION OF DRAWINGS

[0020] Figure 7a , Figure 7b , Figure 7c , Figure 7d EXPLANATION OF DRAWINGS Figure 8a , Figure 8b , Figure 8c , Figure 8d EXPLANATION OF DRAWINGS

[0021] BRIEF DESCRIPTION OF DRAWINGS: 1, 1'- battery module shell assembly structure; C- accommodating space; 10- lower shell; 100- opening; 12- glue groove; 14- guide column; 20- upper shell; 202- concave-convex structure; 22- tab; 24- guide hole; 30, 30a, 30b, 30c, 30d, 30e, 30f- fixed rivet head; 40- sealing layer; A-A', B-B', D-D'- section line; R- local area. DETAILED DESCRIPTION

[0022] The utility model is described below based on the embodiments, but the utility model is not limited to these embodiments only. In the following detailed description of the utility model, some specific details are described in detail. The utility model can also be fully understood without these details for those skilled in the art. In order to avoid confusion of the essence of the utility model, the well-known methods, processes, flows, elements and circuits are not described in detail. In addition, those skilled in the art should understand that the drawings provided herein are for illustrative purposes only and the drawings are not necessarily drawn to scale.

[0023] Please refer to Figure 1 With Figure 2 , Figure 1 With Figure 2 Respectively show the different perspective of the battery module's shell assembly structure 1. The battery module's shell assembly structure 1 includes lower shell 10, upper shell 20 and fixed rivet head 30. Lower shell 10 has opening 100, the edge of opening 100 is provided with glue groove 12 and multiple guide columns 14, multiple guide columns 14 are located outside glue groove 12. Upper shell 20 is provided with tab 22 and multiple guide holes 24, tab 22 is located at the bottom of upper shell 20, multiple guide holes 24 are located outside tab 22, tab 22 corresponds to the position of glue groove 12 and extends into glue groove 12, multiple guide holes 24 correspond to the position of multiple guide columns 14 and multiple guide columns 14 are provided in multiple guide holes 24, so that upper shell 20 is connected to lower shell 10 and defines a containing space (such as Figure 3 The symbol C) for containing one or more battery modules. Although one or more battery modules are not shown in the figure, those skilled in the art can easily understand and make simple changes. Fixed rivet head 30 is formed at the top end of multiple guide columns 14 and is fixed on the surface of multiple guide holes 24 to achieve the fixing effect.

[0024] In some other embodiments, tab 22 is annular, tab 22 surrounds the bottom of upper shell 20, glue groove 12 surrounds the edge of opening 100, and tab 22 corresponds to glue groove 12 and is clamped.

[0025] Please refer to Figure 3 , the following Figure 4 to Figure 6 Introduce the structure schematic diagram of different sections under the condition that upper shell 20 is connected to lower shell 10. The battery module's shell assembly structure 1' of the embodiment is different from the foregoing embodiment in that it has sealing layer 40, so the same components as the foregoing will not be described again.

[0026] As Figure 3 With Figure 4As shown in the cross-sectional view along line A-A', the battery module housing assembly structure 1' also includes a sealing layer 40. The sealing layer 40 is disposed within the adhesive groove 12 of the lower housing 10 and is used to adhere the protrusions 22 of the upper housing 20, thereby achieving a sealing effect. The material of the sealing layer 40 can be adhesive or thermoplastic, and is not limited thereto. In other embodiments, the sealing layer 40 is an annular washer, disposed within the adhesive groove 12 of the lower housing 10, filling the groove 12, and is formed by the protrusions 22 of the upper housing 20 pressing the annular washer to create a waterproof sealing structure. In other embodiments, the sealing layer 40 is a hot-melt material, disposed within the adhesive groove 12 of the lower housing 10, and after heating, the sealing layer 40 hot-melts and adheres to the protrusions 22 of the upper housing 20.

[0027] like Figure 5 and Figure 6 As shown in the cross-sectional view along lines B-B' and D-D', the upper housing 20, connected to the lower housing 10, defines an accommodating space C, which can accommodate one or more battery modules. The upper housing 20 can be designed with different shapes and protrusions 202 to accommodate the battery modules, thus achieving optimal accommodating effect and preventing internal displacement of the battery modules that could lead to impacts.

[0028] Please see Figure 7a , Figure 7b , Figure 7c , Figure 7d and Figure 8a , Figure 8b , Figure 8c , Figure 8d The following describes various types of fixed rivet heads. These include semi-circular rivet heads, ring rivet heads, flat-head rivet heads, countersunk rivet heads, vertical rib rivet heads, and flanged rivet heads. Please refer to these descriptions. Figure 3 and Figure 4 The guide post 14 is a hot riveting post. When the top of the guide post 14 is subjected to hot air cold riveting, infrared hot riveting, ultrasonic riveting or pulse hot riveting, the top of the guide post 14 can be formed into a fixed riveting head.

[0029] like Figure 7a , Figure 7b , Figure 7c , Figure 7d As shown, the fixing rivet head formed at the top of the guide post 14 can be formed through a manufacturing process, such as... Figure 7a , Figure 7b , Figure 7c , Figure 7d The shape. Figure 7a The fixed rivet head 30a is shown to be a semi-circular rivet head, with a semi-circular protrusion at the top forming a hemispherical shape, thus having a smooth surface. Figure 7bThe fixed rivet 30b is shown as a ring-shaped rivet, with a flat or slightly convex top, and the outer circle of the top forms a circular ring. Figure 7c The fixed rivet 30c is shown as a flat head rivet, with the top surface flush with the surface of the upper shell 20, and the rivet height is low. Figure 7d The fixed rivet 30d is shown as a sunken rivet, with the top capable of being embedded inside, so that the top is sunken into the guide hole 24 of the upper shell 20.

[0030] As shown in Figure 8a , Figure 8b , Figure 8c , Figure 8d , the fixed rivet formed at the top end of the guide column 14 can be formed by a process to form a shape like Figure 8a , Figure 8b , Figure 8c , Figure 8d . Figure 8a , Figure 8b The fixed rivet 30e is shown as a cross-sectional view and a perspective view of a stud rivet, with a protruding rib on the top, or a strip structure, and the guide hole of the upper shell 20 can also correspond to the shape and structure of the stud rivet, and a guide hole of corresponding shape and size is first provided to form the stud rivet with a protruding rib on the top. Figure 8c , Figure 8d The fixed rivet 30f is shown as a cross-sectional view and a perspective view of a flange rivet, with a wide edge on the top, and the edge expands outward to contact the surface of the upper shell 20, and the top of the flange rivet can provide a larger pressure distribution range, thereby stabilizing the structure.

[0031] In summary, the shell assembly structure of the battery module of the present application can combine the upper shell with the lower shell through the guide column and the glue groove, and the glue material can achieve effective waterproofing between the upper shell and the lower shell through the glue groove and the glue material in the state of the guide column and the guide hole being combined. At the same time, the hot rivet column can be fixed to the upper shell by using hot air cold riveting, so that the uneven gap caused by the upper shell and the lower shell not being fixed when the glue material is not dry can be prevented, and the upper shell and the lower shell can be fixed to tightly fit without the need for a jig, and the time for hardening the glue can also be saved. Thus, the present application can simplify the process difficulty and complexity, improve the product assembly efficiency, and can be widely used, and is also beneficial to improving the overall automatic assembly design.

[0032] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A housing assembly structure of a battery module for housing one or more battery modules, characterized by, The housing assembly structure comprises: a lower housing having an opening, the edge of the opening being provided with a glue groove and a plurality of guide posts outside the glue groove; an upper housing provided with a tab and a plurality of guide holes, the tab being located at the bottom of the upper housing, the plurality of guide holes being located outside the tab, the tab corresponding to the position of the glue groove and extending into the glue groove, the plurality of guide holes corresponding to the positions of the plurality of guide posts and the plurality of guide posts being arranged in the plurality of guide holes, so that the upper housing is connected to the lower housing to define a containing space for containing one or more battery modules; and a fixed rivet head formed at the top end of the plurality of guide posts and fixed on the surface of the plurality of guide holes to achieve a fixing effect.

2. The housing assembly structure of the battery module according to claim 1, characterized by, Further comprising: a sealing layer provided in the glue groove of the lower housing for bonding the tab of the upper housing to achieve a sealing effect.

3. The casing assembly structure of the battery module according to claim 2, characterized by, The material of the sealing layer is glue or thermoplastic plastic.

4. The casing assembly structure of the battery module according to claim 2, characterized by, The sealing layer is a ring-shaped gasket, which is arranged in the glue groove of the lower housing so that the ring-shaped gasket fills the glue groove and is pressed by the tab of the upper housing to form a waterproof seal.

5. The casing assembly structure of the battery module according to claim 2, wherein The sealing layer is a hot melt material, which is arranged in the glue groove of the lower housing and hot melt adheres to the tab of the upper housing.

6. The casing assembly structure of the battery module according to claim 1, wherein The fixed rivet head is a semicircular rivet head, a ring-shaped rivet head, a flat head rivet head, a sunken rivet head, a vertical rib rivet head or a flange rivet head.

7. The casing assembly structure of the battery module according to claim 1, wherein The plurality of guide posts are hot rivet posts, the top ends of the plurality of guide posts being formed with the fixed rivet heads in the state of hot air cold riveting, infrared hot riveting, ultrasonic riveting or pulse hot riveting.

8. The casing assembly structure of the battery module according to claim 1, wherein The tab is ring-shaped, which surrounds the bottom of the upper housing, the glue groove surrounds the edge of the opening, and the tab corresponds to the glue groove and is clamped.

Images