Battery module end side plate connecting device

Abstract

The utility model discloses a battery module end side plate connecting device. The battery module end side plate connecting device comprises two symmetrically arranged end plate main bodies and a side plate for connecting the two end plate main bodies, a plurality of first bosses are installed on the two sides, connected with the side plates, of the end plate body at equal intervals, and second bosses are installed on the first bosses. Boss positioning holes corresponding to the second bosses are formed in the two ends, connected with the end plate body, of the side plate, and the second bosses can be installed in the boss positioning holes. The first boss and the second boss are installed on the two sides of the end plate body, the boss positioning hole corresponding to the second boss is formed in the side plate, rapid connection between the module end plate and the side plate can be achieved through the boss positioning hole, the first boss and the second boss, self-limiting is achieved through the expansion effect of the battery module, and the battery module can be rapidly connected. The problems that traditional end side plate riveting is low in efficiency and rivet chippings fall off are solved, the problem that traditional end side plate welding is high in investment is solved, the production efficiency of the battery module is improved, and the production and manufacturing cost of the battery module is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing, in particular to a battery module end side plate connecting device. Background Art

[0002] In the production and manufacturing of battery modules, there are generally three methods to achieve the connection between the module end plate and the side plate, namely riveting, bolting, and welding. The riveting and bolting methods require rivets or bolts to be punched one hole at a time, resulting in low production efficiency, and rivets will drop debris when they break, causing safety hazards. The welding method requires welding equipment, resulting in high production costs. The above methods all require manual assistance and the addition of external installation components or welding components, such as bolts, rivets, etc. This installation method not only incurs labor costs, but also always presents various hidden dangers over time.

[0003] To this end, the present application proposes a battery module end side plate connection device based on the above to solve the above-mentioned shortcomings. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to provide a high-efficiency and low-cost battery module end side plate connecting device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A battery module end-side plate connecting device comprises two symmetrically arranged end plate bodies and a side plate for connecting the two end plate bodies;

[0007] A plurality of bosses 1 are installed at equal distances on both sides of the end plate body connected to the side plate, and bosses 2 are installed on bosses 1, wherein the size of bosses 2 is larger than that of bosses 1;

[0008] Both ends of the side plate connected to the end plate body are provided with boss positioning holes corresponding to the second boss, wherein the second boss can be installed in the boss positioning holes.

[0009] The present application installs boss one and boss two on both sides of the end plate body, and opens a boss positioning hole corresponding to boss two on the side plate. The boss positioning hole, boss one and boss two can realize quick connection between the module end plate and the side plate, and realize self-limitation by utilizing the expansion effect of the battery module itself, thereby solving the problems of low efficiency and falling of rivet debris in traditional end and side plate riveting, and solving the problem of high investment in traditional end and side plate welding, thereby improving the production efficiency of battery modules and reducing the production cost of battery modules.

[0010] As a further solution of the utility model: the first boss is a cylindrical structure, the second boss is a waist-shaped block structure, the boss positioning hole is a waist-shaped hole structure, and the waist-shaped hole corresponds to the second boss.

[0011] As a further solution of the utility model: the distance between the inner centers of the boss positioning holes at both ends of the side panel is the side panel assembly dimension L1; the distance between the outer centers of the boss positioning holes at both ends of the side panel is the module design dimension L2.

[0012] As a further solution of the utility model: a battery module is installed between the two end plate bodies, and when the distance between the circular bosses on the same side of the end plate bodies at both ends is equal to the side plate assembly dimension L1, the extrusion equipment outside the end plate bodies stops extruding the internal battery module.

[0013] As a further solution of the utility model: a plurality of reinforcing ribs for enhancing the strength of the end plate are equidistantly arranged on the end plate body, and a plurality of weight-reducing grooves for reducing the weight of the end plate are assembled between two adjacent reinforcing ribs.

[0014] As a further solution of the utility model: the end plate body is also provided with an end plate hoisting hole and a wire harness fixing seat hole for hoisting the module.

[0015] As a further solution of the utility model: a base hole for installing the total positive and negative base of the module is provided on the top of the end plate body, and an end plate mounting hole is opened on the outside of the base hole.

[0016] As a further solution of the utility model: the tops and bottoms of the two end plate bodies are connected by upper and lower side plates.

[0017] As a further solution of the utility model: the thickness of the second boss from the end plate body is greater than the thickness of the side plate.

[0018] As a further solution of the utility model: the center of one end of the boss 2 coincides with the center of the boss 1, and the center of the other end of the boss 2 faces outward.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] First, the present application installs circular bosses and waist-shaped bosses on both sides of the end plate body, and opens waist-shaped holes corresponding to the waist-shaped bosses on the side plates. The waist-shaped holes, waist-shaped bosses and circular bosses can realize the rapid connection between the module end plate and the side plate, and realize self-limitation by utilizing the expansion effect of the battery module itself, thereby solving the problems of low efficiency and falling of rivet debris in traditional end-side plate riveting, and solving the problem of high investment in traditional end-side plate welding, thereby improving the production efficiency of the battery module and reducing the production cost of the battery module;

[0021] Secondly, the circular boss and the waist-shaped boss of the present application can form an "L"-shaped structure. When the waist-shaped boss is inserted into the waist-shaped hole, the expansion force of the battery module can insert the waist-shaped boss into the waist-shaped hole to achieve interlocking of the module and the main body. This interlocking method is not only quick to install, but also has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of the battery module after installation in the embodiment of the utility model;

[0023] Figure 2 This is a structural schematic diagram of the end plate body of an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the side panel of an embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the unexpanded front side plate of the module of the embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of the side plate after the module of the embodiment of the utility model is expanded;

[0027] Explanation of the reference numerals: 1. End plate body; 2. Reinforcing ribs; 3. Weight reduction grooves; 4. End plate lifting holes; 5. Wire harness fixing seat holes; 6. Clamping holes; 7. End plate mounting holes; 8. Boss one; 9. Boss two; 10. Side panel; 11. Boss positioning holes. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1 A battery module end-side plate connecting device includes two end plate bodies 1 and side plates 10 installed on the front and rear sides of the two end plate bodies 1. The two end plate bodies 1 and the two side plates 10 constitute an installation frame of the battery module. The battery module is placed between the two end plate bodies 1. Finally, the upper and lower side plates are used to fix the upper and lower sides of the frame to complete the installation of the battery module.

[0030] For ease of understanding and description, Figure 1The direction between the two end plate bodies 1 is the left-right direction, the direction between the two side plates 10 is the front-back direction, and the other directions are based on this and analogy. It should be understood that this direction setting is only for the convenience of description and understanding, and cannot be understood as a limitation of the present invention.

[0031] Reference Figure 2 , a plurality of reinforcing ribs 2 are provided on the end plate body 1 for enhancing the strength of the end plate, and a plurality of weight-reducing grooves 3 are provided between two adjacent reinforcing ribs 2 for reducing the weight of the end plate. It should be noted here that the reinforcing ribs 2 and the weight-reducing grooves 3 are determined according to the actual requirements of the battery module or the site, and are not limited in this application;

[0032] Furthermore, two end plate lifting holes 4 for lifting the module are symmetrically opened on the end plate body 1, and two vehicle wiring harness fixing seat holes 5 for installing the vehicle wiring harness fixing seat are also symmetrically opened on the end plate body 1 and at the bottom of the end plate lifting holes 4. It should be noted here that the end plate lifting holes 4 and the vehicle wiring harness fixing seat holes 5 are determined according to the actual needs of the battery module or the site, and this application does not limit it, but only provides one of the implementation methods for reference.

[0033] Furthermore, four module total positive and negative socket holes 6 for installing the module total positive and negative sockets are opened on the top of the end plate body 1, and two end plate mounting holes 7 for connecting the end plate and the Pack box are opened at both ends of the top of the end plate body 1 and on the outside of the socket holes 6. It should be noted here that the socket holes 6 and the end plate mounting holes 7 are determined according to the actual needs of the battery module or the site, and this application does not limit it, but only provides one of the implementation methods for reference.

[0034] Reference Figure 2 A plurality of circular or cylindrical bosses 8 (the circular one is taken as an example below) are equidistantly installed on both sides of the end plate body 1 facing the side plate 10, and a waist-shaped boss 29 is also installed on the circular boss 8, wherein the thickness of the waist-shaped boss 29 from the end plate body 1 is greater than the thickness of the side plate 10, so that the side plate 10 can be installed with the waist-shaped boss 29, and the lateral length of the waist-shaped boss 29 is greater than the lateral length of the circular boss 18, so the circular boss 18 and the waist-shaped boss 29 form a structure similar to an "L" shape.

[0035] It should be noted that the waist-shaped boss 29 is a waist-shaped structure, which is equivalent to having arc-shaped structures at both ends, one of which faces inward (i.e. Figure 1 The center of the arc structure (the side facing the battery module) coincides with the center of the circular boss 8, while the center of the other arc structure faces outward (i.e. Figure 1 The side facing away from the battery module).

[0036] Reference Figure 3The side plate 10 is a plate-like structure with smooth inner and outer surfaces as a whole. Both ends of the side plate 10 connected to the end plate body 1 are provided with boss positioning holes 11 corresponding to the waist-shaped boss 2 9, wherein the boss positioning hole 11 adopts a waist-shaped hole corresponding to the waist-shaped boss 2 9, and the size of the waist-shaped hole is larger than the size of the waist-shaped boss 2 9, wherein the waist-shaped boss 2 9 can be installed in the waist-shaped hole;

[0037] The distance between the inner centers of the waist-shaped holes (i.e., boss positioning holes 11) at both ends of the side plate 10 (the two ends of the waist-shaped holes are arc-shaped, so there are two circles, the inner side, i.e., the side facing the middle of the side plate 10 is the inner side, and the corresponding side facing away from the side plate 10 is the outer side) is the side plate assembly dimension L1; the distance between the outer centers of the waist-shaped holes at both ends of the side plate 10 is the module design dimension L2, and it is obvious that L2 is greater than L1; the battery module is extruded in the extrusion equipment when the module length dimension is extruded, and when the distance between the circular bosses 8 on the same side of the end plate main body 1 at both ends is equal to the side plate assembly dimension L1, the extrusion equipment on the outside of the end plate main body 1 stops extruding the internal battery module, and at this time, the waist-shaped holes at both ends of the side plate 10 can be inserted into the waist-shaped bosses 9 on the side of the end plate 1 at both ends of the module (such as Figure 4 shown);

[0038] After the side plates 10 are assembled, the extrusion equipment removes the extrusion force, and the end plate bodies 1 at both ends of the module move outward under the expansion of the module; when the distance between the circular bosses 8 on the same side of the end plate bodies 1 at both ends is equal to the module design size L2, the end plate body 1 stops moving due to the pull of the waist-shaped hole, and the waist-shaped boss 2 9 is just stuck in the waist-shaped hole to achieve self-locking (such as Figure 5 As shown), at this time, the size of the module is the design size, thereby realizing the interlocking of the module end plate body 1 and the side plate 10.

[0039] The specific operating principles of this application are as follows:

[0040] The battery module is extruded in the extrusion equipment. When the distance between the circular bosses 8 on the side of the end plate body 1 at both ends of the module is equal to the distance L1 between the inner centers of the waist-shaped holes at both ends of the side plate 1, the extrusion equipment stops extruding the module. At this time, the waist-shaped holes 11 at both ends of the side plate can be inserted into the waist-shaped bosses 9 on the side of the end plate at both ends of the module. After the side plate is installed, the side plate fits the side of the end plate; the extrusion equipment removes the extrusion force. Since the module cells are filled with soft materials and the thickness is compressed when extruded, the inside of the cell also has expansion force, so when the extrusion force is removed, the module is in its soft material. The module expands under the dual forces of the material rebound force and the battery cell expansion force. Under the expansion of the module, the end plate bodies at both ends of the module move outward. When the distance between the circular bosses 8 on the sides of the end plate bodies 1 at both ends is equal to the distance L2 between the outer centers of the waist-shaped holes at both ends of the side plate 1, the end plate bodies stop moving due to the pulling of the waist-shaped holes. At this time, the size of the module is the design size. Under the joint action of the circular boss 1 8, the waist-shaped boss 2 9, the waist-shaped hole (i.e., the boss positioning hole 11), and the expansion force of the module, the module end plate body and the side plate are interlocked, thereby realizing the quick connection between the end plate body and the side plate.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery module end plate connection device, characterized in that: It comprises two symmetrically arranged end plate bodies (1) and a side plate (10) used for connecting the two end plate bodies (1); A plurality of bosses (8) are equidistantly mounted on both sides of the end plate body (1) where the end plate body (1) is connected to the side plate (10), and a boss (9) is mounted on the boss (8), wherein the size of the boss (9) is larger than that of the boss (8); Both ends of the side plate (10) connected to the end plate body (1) are provided with boss positioning holes (11) corresponding to the second boss (9), wherein the second boss (9) can be installed in the boss positioning hole (11).

2. A battery module end plate connection device according to claim 1, characterized in that: The boss one (8) is a cylindrical structure, the boss two (9) is a waist-shaped block structure, the boss positioning hole (11) is a waist-shaped hole structure, and the waist-shaped hole corresponds to the boss two (9).

3. A battery module end plate connection device according to claim 1, characterized in that: The distance between the inner centers of the boss positioning holes (11) at both ends of the side plate (10) is the side plate assembly dimension L1; the distance between the outer centers of the boss positioning holes (11) at both ends of the side plate (10) is the module design dimension L2.

4. A battery module end plate connection device according to claim 3, characterized in that: A battery module is installed between the two end plate bodies (1). When the distance between the bosses (8) on the same side of the end plate bodies (1) at both ends is equal to the side plate assembly dimension L1, the extrusion device outside the end plate body (1) stops extruding the internal battery module.

5. A battery module end plate connection device according to claim 1, characterized in that: The end plate body (1) is provided with a plurality of reinforcing ribs (2) at equal intervals for enhancing the strength of the end plate, and a plurality of weight-reducing grooves (3) for reducing the weight of the end plate are assembled between two adjacent reinforcing ribs (2).

6. A battery module end plate connection device according to claim 1, characterized in that: The end plate body (1) is also provided with an end plate hoisting hole (4) for hoisting the module and a wire harness fixing seat hole (5).

7. A battery module end plate connection device according to claim 1, characterized in that: The top of the end plate body (1) is provided with a base hole (6) for installing the total positive and negative bases of the module, and an end plate installation hole (7) is opened on the outside of the base hole (6).

8. A battery module end plate connection device according to claim 1, characterized in that: The tops and bottoms of the two end plate bodies (1) are connected via upper and lower side plates.

9. A battery module end plate connection device according to claim 1, characterized in that: The thickness of the second boss (9) from the end plate body (1) is greater than the thickness of the side plate (10).

10. A battery module end plate connection device according to claim 2, characterized in that: The center of one end of the boss 2 (9) coincides with the center of the boss 1 (8), and the center of the other end of the boss 2 (9) faces outward.

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