Battery pack module and vehicle

Abstract

The utility model discloses a battery pack module and a vehicle, the battery pack module comprises a battery pack module body, the battery pack module body comprises: a plurality of battery cells arranged and fixed in parallel; the end plates are oppositely arranged on the two end surfaces of the battery cell; the integrated cover plate assembly is oppositely arranged at the free end of the battery cell and is adjacent to the end plate, the integrated cover plate assembly comprises a busbar, a movable base and an electrical pressing plate, and the electrical pressing plate is provided with a buckle structure; the busbar and the movable base are embedded in the installation space of the electrical pressing plate and are limited and fixed through the buckle structure. The busbar and the movable base are installed on the electrical pressing plate together to form an assembly, the structure is simple, one-time installation is achieved, and the phenomenon that secondary installation hole positions are not centered is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery pack module and a vehicle. Background Art

[0002] Batteries, as the core components of electric vehicles, are the vehicle's power source. Two methods are currently commonly used to improve vehicle range: increasing the energy density of the battery pack, thereby increasing the capacity while maintaining the same battery pack size; and reducing the weight of the pack, thereby reducing overall vehicle energy consumption.

[0003] Traditional battery packs are assembled by first forming modules from battery cells. End and side panels are then used to secure the cell packages, and the modules are then bolted to the battery pack housing. This module design results in a small number of battery cells per module, resulting in low module energy density. The end and side panels are also secured using welding or riveting, making the manufacturing process complex and costly. Furthermore, the module uses plastic covers to protect the busbars, FPC connectors, and wiring harnesses to address insulation issues. These plastic covers are typically injection molded or blister-formed. These two types of parts require molds upfront, resulting in low production efficiency and high costs.

[0004] Furthermore, the current module's busbar output terminal has one end connected to the battery cell and the other end connected to an external copper busbar. The end connected to the battery cell can be welded to the cell for securement; the other end of the output terminal and the external copper busbar are screwed to a base with nuts. This base with nuts is typically placed on a plastic base fixed to the end plate or box. This results in a complex structure with many similar parts. Furthermore, during assembly of the integrated cover plate, the holes for the output terminal and the holes for the nuts on the base are prone to misalignment, resulting in installation problems. Utility Model Content

[0005] In order to solve the above technical problems, the present invention provides a battery pack module, including a battery pack module body, wherein the battery pack module body includes:

[0006] Several battery cells are arranged and fixed in parallel;

[0007] end plates, disposed opposite to both end surfaces of the battery cell; and

[0008] An integrated cover assembly is arranged relative to the free end of the battery cell and adjacent to the end plate. The integrated cover assembly includes a bus, a movable base and an electrical pressure plate. The electrical pressure plate has a snap-fit ​​structure. The bus and the movable base are embedded in the installation space of the electrical pressure plate and are fixed by the snap-fit ​​structure.

[0009] Furthermore, the battery cell has a rectangular structure, and a pre-tightening force can be applied to the battery cell in a free state so that the battery cell is pre-compressed to a certain length.

[0010] Furthermore, adjacent battery cells and the battery cells and the end plates are fixed by foam bonding.

[0011] Furthermore, the bus and the movable base are integrally formed into an F-shaped structure, the electrical pressure plate has a gap for the vertical portion of the bus to pass through, and the horizontal portion of the bus contacts the top surface of the movable base.

[0012] Furthermore, the busbar and the movable base are both provided with corresponding mounting holes.

[0013] Furthermore, the integrated cover assembly also includes an FPC connector and a cover, wherein the cover is fixed to a side of the electrical pressure plate away from the battery cell by plastic rivets.

[0014] Furthermore, the FPC connector can be fixed to the end plate by fixing screws according to the spatial arrangement of the battery pack module body.

[0015] Furthermore, the FPC connector can be fixed to the electrical pressure plate and exposed on the cover according to the spatial arrangement of the battery pack module body.

[0016] A vehicle comprises a box body with a receiving chamber, wherein the battery pack module is received in the box body.

[0017] Furthermore, the battery pack module body is fixed to the box body by structural adhesive.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The battery pack module provided by the present invention eliminates the side panels. After the module is bonded and fixed, a pre-tightening force is applied to press it tightly before it is placed in the box, which increases the number of cells that can be packaged in a single module and improves the energy density of the module.

[0020] 2. By installing the busbar and the movable base together on the electrical pressure plate, an assembly is formed with a simple structure and can be installed in one time, avoiding the phenomenon of misalignment of the secondary installation holes.

[0021] 3. The cover is made of sheet parts, which does not require mold making, and the parts production efficiency is high and the cost is low.

[0022] 4. The FPC connector can be flexibly fixed to the end plate or electrical pressure plate according to the space layout of the entire module package, making the space utilization of the entire package higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the overall structure disclosed in an embodiment of the present utility model;

[0024] Figure 2 This is an exploded view of the overall structure disclosed in the embodiment of the utility model;

[0025] Figure 3 A partial schematic diagram of the busbar, movable base, and electrical pressure plate disclosed in an embodiment of the present utility model;

[0026] Figure 4 The assembly state of the busbar, movable base and electrical pressure plate disclosed in the embodiment of the utility model Figure 1 ;

[0027] Figure 5 The assembly state of the busbar, movable base and electrical pressure plate disclosed in the embodiment of the utility model Figure 2 ;

[0028] Figure 6 A schematic diagram of the installation of an FPC connector and an end plate disclosed in an embodiment of the present utility model;

[0029] Figure 7 This is a schematic diagram of the installation of the FPC connector and the cover plate disclosed in an embodiment of the present utility model.

[0030] In the picture:

[0031] 00. Battery pack module body;

[0032] 10. Battery core; 11. Foam;

[0033] 20. End plate; 21. Fixing screws;

[0034] 30. Integrated cover assembly; 31. Busbar; 32. Movable base; 33. Electrical pressure plate; 34. FPC connector; 35. Cover; 36. Plastic rivet. DETAILED DESCRIPTION

[0035] In order to make the technical solution and technical effect of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments.

[0036] The utility model aims to provide a battery pack module, which aims to solve the problem that when the integrated cover assembly 30 is installed, the hole position of the busbar 31 is not aligned with the hole position of the movable base 32, making it difficult to install the offset hole. Figure 1-2The battery pack module primarily comprises a battery pack module body 00, which includes a plurality of battery cells 10 arranged and fixed in parallel, an end plate 20, and an integrated cover plate assembly 30. The end plates 20 are positioned opposite the end faces of the battery cells 10; the integrated cover plate assembly 30 is positioned opposite the free ends of the battery cells 10 and adjacent to the end plates 20; the end plates 20 and the integrated cover plate assembly 30 form an enclosure structure surrounding the battery cells 10.

[0037] The battery cells 10 are rectangular in structure, and adjacent battery cells 10 and battery cells 10 and end plates 20 are bonded and fixed by foam 11. After the battery cells 10 are stacked and fixed, a tool can be used to apply a pre-tightening force to the free battery cells 10 to pre-compress several battery cells 10 to a certain length. The advantages of this design are: on the one hand, the battery pack module body 00 is pressed and tightened with a pre-tightening force before being inserted into the box, so that the end plates 20 can be fixed to the box beams by the pre-tightening force; on the other hand, it is conducive to increasing the number of battery cells that can be packaged, thereby improving the energy density of the module.

[0038] The integrated cover assembly 30 includes a busbar 31, a movable base 32, an electrical pressure plate 33, an FPC connector 34, and a cover 35. The cover 35 is fixed to the side of the electrical pressure plate 33 away from the battery cell 10 via plastic rivets 36. The cover 35 is made of sheet material, requiring no mold, and is secured with plastic rivets 36. Compared to existing plastic covers made of injection molded or blister-molded parts, this has the advantages of high part production efficiency and low cost. The busbar 31 is welded to the battery cell 10 pole. Figure 3-5 The busbar 31 and the movable base 32 are in an F-shaped structure as a whole. The electric pressure plate 33 has a gap for the vertical portion of the busbar 31 to pass through, and the horizontal portion of the busbar 31 is in contact with the top surface of the movable base 32. The busbar 31 and the movable base 32 are both provided with corresponding mounting holes. The electric pressure plate 33 has a snap-fit ​​structure. The busbar 31 and the movable base 32 are integrally embedded in the mounting space of the electric pressure plate 33 and are fixed by the snap-fit ​​structure, so that the busbar 31, the movable base 32 and the electric pressure plate 33 form an assembly. Compared with the existing busbar mounting structure, the utility model does not require secondary installation of the holes, thus avoiding the phenomenon that the offset holes cannot be installed.

[0039] refer to Figure 6-7 According to the spatial arrangement of the entire package, the FPC connector 34 can be fixed to the end plate 20 or fixed to the electrical pressure plate 33 by the fixing screws 21 and exposed on the cover 35. In this way, the FPC connector 34 can be flexibly fixed in a fixed position, making the space utilization rate of the entire package higher.

[0040] The present invention also protects a vehicle having a housing with a receiving cavity, wherein the battery pack module is received in the housing. Furthermore, the battery pack module body 00 is fixed to the housing by structural adhesive.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery pack module, comprising a battery pack module body (00), characterized in that: The battery pack module body (00) comprises: A plurality of battery cells (10) are arranged and fixed in parallel; End plates (20) are arranged opposite to the two end surfaces of the battery core (10); and An integrated cover assembly (30) is arranged relative to the free end of the battery cell (10) and adjacent to the end plate (20). The integrated cover assembly (30) includes a busbar (31), a movable base (32) and an electrical pressure plate (33). The electrical pressure plate (33) has a snap-fit ​​structure. The busbar (31) and the movable base (32) are embedded in the installation space of the electrical pressure plate (33) and are fixed by the snap-fit ​​structure.

2. The battery pack module according to claim 1, characterized in that: The battery core (10) has a rectangular structure, and a pre-tightening force can be applied to the battery core (10) in a free state so that the battery core (10) is pre-compressed to a certain length.

3. The battery pack module according to claim 1, characterized in that: Adjacent battery cells (10) and the battery cells (10) and the end plates (20) are bonded and fixed via foam (11).

4. The battery pack module according to claim 1, characterized in that: The busbar (31) and the movable base (32) are integrally formed into an F-shaped structure. The electrical pressure plate (33) has a gap for the vertical portion of the busbar (31) to pass through. The horizontal portion of the busbar (31) contacts the top surface of the movable base (32).

5. The battery pack module according to claim 1, characterized in that: The busbar (31) and the movable base (32) are both provided with corresponding mounting holes.

6. The battery pack module according to claim 1, characterized in that: The integrated cover assembly (30) further comprises an FPC connector (34) and a cover (35), wherein the cover (35) is fixed to a side of the electrical pressure plate (33) away from the battery core (10) via plastic rivets (36).

7. The battery pack module according to claim 6, characterized in that: The FPC connector (34) can be arranged according to the space of the battery pack module body (00) and fixed to the end plate (20) via fixing screws (21).

8. The battery pack module according to claim 6, characterized in that: The FPC connector (34) can be fixed to the electrical pressure plate (33) according to the spatial arrangement of the battery pack module body (00) and exposed on the cover plate (35).

9. A vehicle comprising a box having a storage chamber, characterized in that: The box contains the battery pack module according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that The battery pack module body (00) is fixed to the box body by structural adhesive.

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