Module fixing structure and battery pack

Abstract

The utility model provides a module fixing structure and a battery pack. The module fixing structure provided by the utility model comprises a module end plate and a module side plate, the module end plate is arranged at the end part of the battery module, the module side plate piece is arranged at the side part of the battery module, a plug-in structure is arranged between the module end plate and the module side plate piece, an extension connecting part extending towards the module end plate is arranged on the module side plate piece, and the extension connecting part is in threaded connection with the module end plate. According to the module fixing structure disclosed by the utility model, the module end plate and the module side plate are connected in an inserted manner in advance through the arrangement of the insertion structure, the connection reliability is ensured, and the extension connecting part is connected with the module end plate in a screwed manner through the arrangement of the extension connecting part, so that the fixing effect and the overall strength of the battery module are improved; therefore, the safety of the battery pack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a module fixing structure. The utility model also relates to a battery pack provided with the module fixing structure. Background Art

[0002] With the development of the new energy vehicle industry, the safety protection of battery packs is an important aspect of improving the safety of new energy vehicles. Among them, the end plates and side plates of the battery module are important components, and their fixing methods largely determine the safety performance of the entire battery pack. Therefore, it is particularly important to improve the fixing effect and strength of the end plates and side plates. In order to improve the fixing effect and strength of the battery module, the existing fixing structure of the end plates and side plates usually adopts a riveting fixing method, but it is easy to fail under harsh vibration conditions, and it is difficult to meet the requirements of the ever-evolving new energy vehicles for the fixing effect and overall strength of the battery module. Utility Model Content

[0003] In view of this, the utility model aims to provide a module fixing structure to improve the fixing effect and overall strength of the battery module.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A module fixing structure comprises a module end plate and a module side plate;

[0006] The module end plate is arranged at the end of the battery module, the module side plate is arranged at the side of the battery module, a plug-in structure is arranged between the module end plate and the module side plate, and an extended connection portion extending toward the module end plate is arranged on the module side plate, and the extended connection portion is screwed to the module end plate.

[0007] Furthermore, the end of the module end plate that is in contact with the module side plate is provided with a plug-in column; the module side plate has a connecting end that is in contact with the end of the module end plate, and the connecting end is provided with a plug-in hole, and the plug-in column is inserted in the plug-in hole.

[0008] Furthermore, the plug-in columns are multiple and spaced apart along the height direction of the module end plate, the plug-in holes are multiple and matched with the plug-in columns, and the multiple plug-in columns are plugged and connected with the multiple plug-in holes in a one-to-one correspondence.

[0009] Furthermore, a boss is provided on the connection end at a position corresponding to the plug hole; and the plug hole passes through the connection end and the boss.

[0010] Furthermore, the cross section of the plug-in column is circular or polygonal; the cross section of the plug-in hole matches the plug-in column.

[0011] Furthermore, the side panels include module side panels and / or side liquid cooling panels.

[0012] Furthermore, a bending plate is provided on the side panel of the module; the extended connection portion includes a first plate body provided on the bending plate and extending toward the module end plate, and a mounting hole provided on the first plate body; the first plate body is connected to the module end plate by a threaded connection member passing through the mounting hole.

[0013] Furthermore, the first plate body overlaps the top end of the module end plate, and / or the first plate body overlaps the bottom end of the module end plate; the mounting hole corresponds to the end plate fixing hole on the module end plate, and the threaded connector is passed through the mounting hole and the end plate fixing hole.

[0014] Furthermore, the bent plate is welded to the module side plate; or, the bent plate and the module side plate are integrally formed.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The module fixing structure described in the utility model, by providing a plug-in structure, enables the module end plate and the module side plate to be pre-plugged and connected, thereby ensuring the connection reliability between the module end plate and the module side plate, and by providing an extended connection part, the extended connection part is screwed and connected to the module end plate, so as to improve the fixing effect and overall strength of the battery module, thereby helping to improve the safety of the battery pack.

[0017] In addition, the end of the module end plate and the module side plate are fitted with a plug-in column, and the connection end of the module side plate is provided with a plug-in hole. Through the cooperation of the plug-in column and the plug-in hole, the structure is simple and easy to design and implement, and the module end plate and the module side plate can be pre-connected, and have a good fixing effect. In addition, the plug-in column is arranged in multiple intervals along the height direction of the module end plate, and the plug-in hole is matched with the plug-in column, and it is plugged and connected with each plug-in hole one by one, which can further improve the connection strength of the module end plate and the module side plate.

[0018] Secondly, a boss is provided at the position of the connection end corresponding to the plug hole, and the plug hole passes through the connection end and the boss, which can further improve the reliability of the plug-in column and the plug hole, and also improve the structural strength of the plug hole. The cross section of the plug column is circular or polygonal, and the cross section of the plug hole matches the plug column. The structure is simple and easy to process and prepare.

[0019] Furthermore, the side panels include module side panels or side liquid cooling panels, which can cool the battery module. The extended connection portion adopts a first plate body of a bent plate, which has a simple structure and is easy to design and install, and can ensure the connection reliability between the module end plate and the module side plate. In addition, the first plate body of the bent plate is overlapped at the top or bottom of the module end plate, or overlapped at the top and bottom of the module end plate, which is conducive to fixing the end plate fixing holes on the module end plate, so as to facilitate screwing and fixing the first plate body of the cover, thereby improving the structural strength.

[0020] In addition, the bending plate is welded to the side plate of the module, or the bending plate and the side plate of the module are integrally formed, which can facilitate the arrangement of the bending plate and improve the structural strength between the bending plate and the side plate of the module.

[0021] Another object of the present invention is to provide a battery pack, wherein the battery modules in the battery pack are fixed by the module fixing structure.

[0022] The battery pack of the present invention and the module fixing structure as described above have the same beneficial effects as those of the prior art, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative 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 accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the module fixing structure according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the module end plate according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic structural diagram of the side panel of the module according to an embodiment of the utility model;

[0027] Description of reference numerals:

[0028] 1. Module end plate; 2. Module side plate; 3. Plug-in column; 4. Plug-in hole; 5. Boss; 6. Bending plate; 7. Mounting hole; 8. End plate fixing hole. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] Embodiment 1

[0034] The present embodiment relates to a module fixing structure, which is used to improve the fixing effect and overall strength of a battery module.

[0035] In terms of overall structure, Figure 1 As shown, the module fixing structure of this embodiment includes a module end plate 1 and a module side plate 2 .

[0036] Among them, the module end plate 1 is arranged at the end of the battery module, the module side panel 2 is arranged at the side of the battery module, a plug-in structure is arranged between the module end plate 1 and the module side panel 2, and an extended connection portion extending toward the module end plate 1 is arranged on the module side panel 2, and the extended connection portion is screwed to the module end plate 1.

[0037] As shown in the above structure, the module fixing structure of this embodiment, by setting a plug-in structure, enables the module end plate 1 and the module side panel 2 to be pre-plugged and connected, thereby ensuring the connection reliability between the module end plate 1 and the module side panel 2, and by setting an extended connection part, the extended connection part is screwed to the module end plate 1, which can improve the reliability of the connection between the module side panel 2 and the module end plate 1, thereby improving the fixing effect and overall strength of the battery module, which is beneficial to improving the safety of the battery pack.

[0038] Based on the above overall introduction, specifically, continue to combine Figure 1As shown, in the module fixing structure of this embodiment, the module side panel 2 is tightly fitted with the side of the module end plate 1, and the module end plate 1 and the module side panel 2 are pre-plugged and connected through the plug-in structure, and the module side panel 2 is screwed with the module end plate 1 through the extended connection part. Compared with the conventional fixed connection form of riveting connection, the module fixing structure of this embodiment has a better fixing effect and can avoid failure due to damage to the connection structure under severe vibration conditions, and has better structural strength, which is conducive to improving the connection reliability between the module end plate 1 and the module side panel 2. At the same time, it is also conducive to improving the convenience of disassembly and assembly of the module side panel 2, so as to facilitate maintenance of the battery module.

[0039] In specific implementation, the module end plate 1 of this embodiment may preferably be provided with a plurality of criss-crossing grid plates, and reinforcing columns are formed at the intersections of the grid plates, so as to reduce the weight of the module end plate 1 while ensuring the structural strength of the module end plate 1, thereby improving the overall strength of the module fixing structure of this embodiment.

[0040] As a preferred implementation form, Figure 2 , Figure 3 As shown, the end of the module end plate 1 and the module side plate 2 of this embodiment is provided with a plug-in column 3, and the module side plate 2 has a connection end that is attached to the end of the module end plate 1, and a plug-in hole 4 is provided on the connection end, and the plug-in column 3 is inserted in the plug-in hole 4. The plug-in structure thus formed adopts the plug-in column 3 to cooperate with the plug-in hole 4, and its structure is simple and reliable, and it is easy to design and implement on the module end plate 1 and the module side plate 2. Through the cooperation of the plug-in column 3 and the plug-in hole 4, a certain pre-positioning effect is played in the installation process of the module end plate 1 and the module side plate 2, which improves the connection reliability of the module end plate 1 and the module side plate 2, and is conducive to the convenience of disassembly and assembly of the module side plate 2.

[0041] Specifically, as a preferred implementation form, the plug-in columns 3 of this embodiment are multiple and are arranged at intervals along the height direction of the module end plate 1, and the plug-in holes 4 are multiple and are matched with the plug-in columns 3. The multiple plug-in columns 3 are plugged and connected with the multiple plug-in holes 4 in a one-to-one correspondence. It can be understood that by setting the plug-in holes 4 and the plug-in columns 3 to multiple corresponding ones, the strength of the plug-in connection between the module end plate 1 and the module side panel 2 can be further improved, and in the specific implementation, the plug-in columns 3 can be preferably arranged near the top and bottom of the module end plate 1. Through the plug-in columns 3 arranged at the top and bottom, the upper and lower ends of the connection end of the module side panel 2 can be fixed, which is beneficial to improve the connection strength of the module side panel 2. In addition, three plug-in columns 3 can be preferably arranged on any side of the module end plate 1 to ensure the fixing effect of the module side panel 2.

[0042] When the battery module is in a bad working condition, the contact surface between the plug hole 4 and the plug post 3 is also easily damaged due to vibration, which eventually causes the plug post 3 to separate from the plug hole 4, causing the fixing structure to be destroyed and the fixing effect to be reduced. Therefore, as a preferred embodiment, Figure 3 As shown, a boss 5 is provided at the position corresponding to the plug hole 4 on the connection end of this embodiment, and the plug hole 4 passes through the connection end and the boss 5. The provision of the boss 5 can increase the contact area between the plug column 3 and the plug hole 4, thereby facilitating the reliability of the connection between the plug column 3 and the plug hole 4. At the same time, the provision of the boss 5 strengthens the structural strength at the plug hole 4, preventing the plug hole 4 from being deformed by force, causing the plug column 3 to detach, and thus facilitating the overall strength of the fixed structure of the module.

[0043] Specifically, as a preferred implementation form, the cross section of the plug post 3 is circular or polygonal, and the cross section of the plug hole 4 matches the plug post 3. In specific implementation, the plug post 3 and the plug hole 4 can be preferably set as the center of the circle, which has a simple structure, good strength, and is easy to process and prepare. At the same time, the side plate can include a module side plate or a side liquid cooling plate to ensure the cooling performance of the battery module.

[0044] In this embodiment, if Figure 1 , Figure 3 As shown, as a preferred implementation form, a bending plate 6 is provided on the module side panel 2 of this embodiment, and the above-mentioned extended connection portion includes a first plate body on the bending plate 6 and extending toward the module end plate 1, and a mounting hole 7 provided on the first plate body.

[0045] Specifically, in the present embodiment, the bending plate 6 is L-shaped as a whole, and has a first plate body extending toward the module end plate 1, and a second plate body connected to the first plate body and fixed to the module side plate 2. The first plate body is connected to the module end plate 1 by a threaded connector inserted through the mounting hole 7. The extended connection portion adopts the first plate body of the bending plate 6 and is fixed to the module end plate 1 by bolts. Its structure is simple and reliable, and the processing technology is simple and easy to implement, which can improve the connection strength between the module side plate 2 and the module end plate 1. In specific implementation, the first plate body can be preferably set to extend toward the top end, bottom end or one side away from the battery module of the module end plate 1, so that the first plate body can be overlapped on the module end plate 1 to improve the fixing effect.

[0046] Among them, as a preferred implementation form, the first plate body of this embodiment overlaps the top end of the module end plate 1, or the first plate body overlaps the bottom end of the module end plate 1. The mounting hole 7 corresponds to the end plate fixing hole 8 on the module end plate 1, and the threaded connector is penetrated through the mounting hole 7 and the end plate fixing hole 8. Therefore, by screwing the first plate body to the module end plate 1 through the mounting hole 7 and the end plate fixing hole 8, the module side plate 2 and the module end plate 1 can be effectively fixed. At the same time, the bolt connection method is adopted, which is conducive to the disassembly and assembly of the module side plate 2 to facilitate the maintenance of the battery module.

[0047] It should be noted that, in addition to the L-shape, the bending plate 6 of this embodiment can also be set to a groove shape. In this case, the bottom part of the groove constitutes a second plate body, which is fixedly connected to the module side plate 2, and the two side parts of the groove constitute the first plate body. The two first plate bodies are respectively connected to the top and bottom ends of the module end plate 1. This is also feasible.

[0048] The bending plate 6 of this embodiment, as a specific implementation form, can be welded to the module side plate 2, or the bending plate 6 and the module side plate 2 can be integrally formed. It can be understood that the bending plate 6 can be welded to the module side plate 2 as an independent part, which is easy to install and operate. The module side plate 2 can also be bent to form the bending arm, which has a simple processing technology and has a higher structural strength than the bending plate 6 as an independent part welded to the module side plate 2, thereby improving the overall strength of the module fixing structure.

[0049] The module fixing structure of the present embodiment enables the module end plate 1 to be pre-plugged and connected with the module side panel 2 by setting a plug-in structure, which is beneficial to a certain pre-positioning effect on the installation of the module side panel 2, and extends the connecting portion to be screwed and connected to the module end plate 1, thereby ensuring the reliability of the connection between the module side panel 2 and the module end plate 1, and facilitating the convenience of disassembly and assembly of the module side panel 2.

[0050] At the same time, by setting an extended connection part and screwing the extended connection part to the module end plate 1, the reliability of the connection between the module side panel 2 and the module end plate 1 can be improved, and the extended connection part and the plug-in structure are arranged together, which can further improve the reliability of the connection between the module side panel 2 and the module end plate 1, thereby improving the fixing effect and overall strength of the battery module, which is beneficial to improving the safety of the battery pack and has good usability.

[0051] Embodiment 2

[0052] This embodiment relates to a battery pack, in which a battery module is fixed by the module fixing structure in the first embodiment.

[0053] The battery pack of this embodiment has the technical advantages of the module fixing structure in the first embodiment, thereby improving the structural strength of the battery pack and facilitating improving the safety of the battery pack.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A module fixing structure, characterized in that: including module end plates and module side plates; The module end plate is arranged at the end of the battery module, the module side plate is arranged at the side of the battery module, a plug-in structure is arranged between the module end plate and the module side plate, and an extended connection portion extending toward the module end plate is arranged on the module side plate, and the extended connection portion is screwed to the module end plate.

2. The module fixing structure according to claim 1, characterized in that: The end of the module end plate that is in contact with the module side plate is provided with a plug-in column; The module side plate has a connecting end that fits in the end of the module end plate, and the connecting end is provided with a plug hole, and the plug post is plugged into the plug hole.

3. The module fixing structure according to claim 2, characterized in that: The plug-in columns are multiple and spaced apart along the height direction of the module end plate. The plug-in holes are multiple and matched with the plug-in posts, and the multiple plug-in posts are plug-connected with the multiple plug-in holes in a one-to-one correspondence.

4. The module fixing structure according to claim 2, characterized in that: A boss is provided on the connection end at a position corresponding to the plug hole; The plug hole passes through the connecting end and the boss.

5. The module fixing structure according to claim 2, characterized in that: The cross section of the plug-in column is circular or polygonal; The cross section of the plug hole matches the plug post.

6. The module fixing structure according to claim 1, characterized in that: The side panels include module side panels and / or side liquid cooling panels.

7. The module fixing structure according to any one of claims 1 to 6, characterized in that: The side panels of the module are provided with bending plates; The extended connection portion includes a first plate body on the bent plate and extending toward the module end plate, and a mounting hole provided on the first plate body; The first plate body is connected to the module end plate via a threaded connector penetrating through the mounting hole.

8. The module fixing structure according to claim 7, characterized in that: The first plate body overlaps with the top end of the module end plate, and / or the first plate body overlaps with the bottom end of the module end plate; The mounting hole corresponds to the end plate fixing hole on the module end plate, and the threaded connector is inserted through the mounting hole and the end plate fixing hole.

9. The module fixing structure according to claim 7, characterized in that: The bent plate is welded to the module side plate; or the bent plate and the module side plate are integrally formed.

10. A battery pack, characterized in that: The battery module in the battery pack is fixed by the module fixing structure according to any one of claims 1 to 9.

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