Box integrated module for battery and battery system

Abstract

The utility model discloses a box integrated module for a battery and a battery system, the box integrated module for the battery comprises a frame structure, an accommodating space is formed on the inner side of the frame structure, the accommodating space is used for placing a battery module, the battery module is provided with a copper bar assembly, and the copper bar assembly is arranged on the inner side of the frame structure. The frame structure is provided with a copper bar mounting hole group, the copper bar mounting hole group is arranged to be communicated with the accommodating space, and the copper bar mounting hole group is arranged to directly face the copper bar assembly; and the cover plate assembly is at least used for opening or closing the copper bar mounting hole group. Through the application of the battery box body integrated module and the battery system, the battery box body integrated module with high energy density and the battery system can be conveniently adjusted to adapt to the use requirements of different electric quantity systems, the overall weight of the system is reduced, the electrical safety is improved, the production quality of battery products is guaranteed, and the battery box body integrated module and the battery system are favorable for installation and disassembly; and the later maintenance difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a box integrated module for batteries and a battery system. Background Art

[0002] Currently, China's new energy vehicle market is experiencing rapid growth. As a core component of pure electric vehicles, the performance of power batteries is directly related to the vehicle's performance, reliability, and safety. New energy power battery technology is widely used in the construction machinery sector. However, designing a battery system structure that achieves high energy density, high safety, high reliability, and sufficient manufacturability within limited space remains a major challenge for new energy battery technology.

[0003] In addition, most existing power battery systems are composed of multiple independent standard box batteries connected together. However, the high-voltage and low-voltage connections on the outside of each standard box are relatively complicated, and frames and skins are required to ensure support and sealing of the battery modules. In addition, the overall volume and mass of the box are large, the energy density of the system is low, and the development cost is high. When it comes to the installation of multiple standard boxes and the high-voltage and low-voltage connections between the standard boxes, the overall assembly process of the system is relatively complicated, and the after-sales maintainability is poor. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a box integrated module for a battery, comprising:

[0005] A frame structure, wherein an accommodating space is formed on the inner side of the frame structure, the accommodating space is used to place a battery module, a copper busbar assembly is provided on the battery module, and a copper busbar mounting hole group is provided on the frame structure, the copper busbar mounting hole group is connected to the accommodating space, and the copper busbar mounting hole group is arranged opposite to the copper busbar assembly;

[0006] A cover plate assembly is used at least to open or close the copper busbar mounting hole group.

[0007] In another preferred embodiment, the copper busbar mounting hole group includes: at least one first hole and at least one second hole, the first hole is arranged at one end of the frame structure, and the second hole is arranged at one side of the frame structure.

[0008] In another preferred embodiment, it further includes: a first copper bar fixing member and a second copper bar fixing member, wherein the first copper bar fixing member and the second copper bar fixing member are both connected to the inner wall of the accommodating space, the first copper bar fixing member is arranged close to the first hole, and the second copper bar fixing member is arranged close to the second hole.

[0009] In another preferred embodiment, it further comprises: a plurality of reinforcing beams, each of the reinforcing beams being arranged on the inner side of the frame structure, and both ends of each reinforcing beam being connected to two sides of the frame structure respectively.

[0010] In another preferred embodiment, a liquid cooling structure is provided at the bottom of the battery module, and a liquid cooling installation hole group is provided on the frame structure, and the liquid cooling installation hole group is arranged opposite to the liquid cooling structure.

[0011] In another preferred embodiment, the liquid cooling structure is preferably a liquid cooling plate.

[0012] In another preferred embodiment, it further includes: at least two support members, both of which are arranged on the inner side of the frame structure, and the two support members are respectively arranged close to the two sides of the frame structure, and the lower end of the liquid cooling structure is arranged on the support members.

[0013] In another preferred embodiment, a BMS device is provided on the battery module, and a BMS mounting hole group is provided on the frame structure, and the BMS mounting hole group is arranged opposite to the BMS device.

[0014] In another preferred embodiment, the BMS device is preferably a BMS slave.

[0015] In another preferred embodiment, an installation groove is provided at the upper end of the frame structure, and the installation groove is used to install a sealing gasket.

[0016] In another preferred embodiment, the upper end of the frame structure extends radially outward to form a first supporting edge, and the lower end of the frame structure extends radially outward to form a second supporting edge. A plurality of first connecting holes are opened on the first supporting edge, and a plurality of second connecting holes are opened on the second supporting edge, and each of the first connecting holes is opposite to a second connecting hole.

[0017] The purpose of the present utility model is also to provide a battery system, comprising at least two of the above-mentioned box integrated modules for batteries, further comprising: a box cover and a bracket, at least two of the box integrated modules for batteries are connected in sequence from top to bottom to form a box-like structure, the box cover is installed at the upper end of the box-like structure, and the bracket is installed at the lower end of the box-like structure.

[0018] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0019] Through the application of the utility model, a high-energy-density battery box integrated module and a battery system are provided. The design of the box integrated module that can be assembled in multiple ways can be easily adjusted to adapt to the use requirements of different power systems. The additional external frame structure is eliminated to reduce the overall weight of the system. The electrical connection components are assembled through the corresponding hole structure to improve electrical safety, ensure the production quality of battery products, facilitate installation and disassembly, and reduce the difficulty of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall schematic diagram of a box integrated module for batteries of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of a box integrated module for batteries of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation of a battery system of the present invention.

[0023] In the attached figure:

[0024] 1. Frame structure; 2. Accommodation space; 3. Battery module; 4. Cover assembly; 5. Triangular reinforcement; 6. First hole; 7. Second hole; 8. First copper busbar fixing member; 9. Second copper busbar fixing member; 10. Interlayer copper busbar through hole; 11. Reinforcement beam; 12. Liquid cooling structure; 13. Liquid cooling installation hole group; 14. Support member; 15. BMS device; 16. BMS installation hole group; 17. Installation groove; 18. Sealing gasket; 19. First supporting edge; 20. Second supporting edge; 21. First connecting hole; 22. Second connecting hole; 23. I-beam; 24. Box cover; 25. Bracket; 26. Lifting ear; 27. Connecting bolt; 28. Small copper busbar; 29. ​​Liquid cooling pipe. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] like Figure 1 and Figure 2 As shown, a preferred embodiment of a box integrated module for a battery is shown, comprising: a frame structure 1, a receiving space 2 is formed on the inner side of the frame structure 1, the receiving space 2 is used to place a battery module 3, a copper busbar assembly is provided on the battery module 3, a copper busbar mounting hole group is provided on the frame structure 1, the copper busbar mounting hole group is connected to the receiving space 2, and the copper busbar mounting hole group is arranged opposite the copper busbar assembly; a cover assembly 4, the cover assembly 4 is at least used to open or close the copper busbar mounting hole group. Furthermore, the copper busbar mounting hole group can be opened or closed according to the needs of the user by setting the cover assembly 4. When the box integrated module is installed, the copper busbar mounting hole group can be opened to enable the copper busbar assembly on the battery module 3 to be installed and connected to the adjacent lower or upper battery module 3, and then closed by the cover assembly 4 to meet the sealing requirements of the battery system; when maintenance and disassembly are required later, the cover assembly 4 can be removed to open the copper busbar mounting hole group so that the user can directly operate the copper busbar assembly.

[0028] Furthermore, as a preferred embodiment, the frame structure 1 is preferably rectangular. Furthermore, the frame structure 1 preferably includes a front frame, a left frame, a rear frame, and a right frame that are welded end to end in sequence along the circumferential direction.

[0029] Furthermore, as a preferred embodiment, it further comprises: four triangular reinforcement members 5 , which are respectively arranged at the four inner corners of the upper part of the inner side of the frame structure 1 .

[0030] Furthermore, as a preferred embodiment, the copper busbar mounting hole group includes: at least one first hole 6 and at least one second hole 7, the first hole 6 is provided at one end of the frame structure 1, and the second hole 7 is provided at one side of the frame structure 1. Furthermore, the copper busbar assembly includes a long copper busbar for main positive and main negative connections, and a small copper busbar 28 connected between adjacent battery modules 3, the first hole 6 is used for operating the long copper busbar, and the second hole 7 is used for operating the small copper busbar 28.

[0031] Furthermore, as a preferred embodiment, the plurality of first holes 6 are preferably arranged in sequence along the width direction of the frame structure 1 , and the plurality of second holes 7 are preferably arranged in sequence along the length direction of the frame structure 1 .

[0032] Furthermore, as a preferred embodiment, it further includes: a first copper bar fixing member 8 and a second copper bar fixing member 9, both of which are connected to the inner wall of the accommodating space 2, the first copper bar fixing member 8 is arranged near the first hole 6, and the second copper bar fixing member 9 is arranged near the second hole 7. Furthermore, the first copper bar fixing member 8 and the second copper bar fixing member 9 are respectively used to position the corresponding long copper bar and small copper bar 28.

[0033] Furthermore, as a preferred embodiment, the first copper bar fixing member 8 is preferably a long copper bar fixing beam, on which a waist-shaped hole is horizontally opened along the width direction of the frame structure 1, and the long copper bar can be positioned at the waist-shaped hole through an additional first connecting member.

[0034] Furthermore, as a preferred embodiment, the second copper busbar fixing member 9 is provided with a plurality of interlayer copper busbar vias 10 along the vertical direction. Furthermore, the small copper busbar 28 can preferably extend downward along the vertical direction through the interlayer copper busbar vias 10 and then be electrically connected to the battery module 3 below.

[0035] Furthermore, as a preferred embodiment, it further comprises: a plurality of reinforcing beams 11 , each reinforcing beam 11 is arranged on the inner side of the frame structure 1 , and both ends of each reinforcing beam 11 are respectively connected to the two sides of the frame structure 1 .

[0036] Furthermore, as a preferred embodiment, a plurality of reinforcing beams 11 are preferably arranged in sequence along the length direction of the frame structure 1 , and the reinforcing beams 11 are arranged close to the bottom of the frame structure 1 .

[0037] Furthermore, as a preferred embodiment, a liquid cooling structure 12 is provided at the bottom of the battery module 3, and a liquid cooling mounting hole group 13 is provided on the frame structure 1, with the liquid cooling mounting hole group 13 being arranged directly opposite the liquid cooling structure 12. Furthermore, the liquid cooling structure 12 is used to dissipate heat from the battery module 3. Liquid cooling pipes 29 for providing a heat exchange medium are connected to the liquid cooling structure 12. The liquid cooling mounting hole group 13 is preferably used to connect the liquid cooling pipes 29. Specifically, each liquid cooling structure 12 can be connected to the liquid cooling structure 12 of an adjacent battery module 3 via the liquid cooling pipes 29.

[0038] Furthermore, as a preferred embodiment, the liquid cooling structure 12 is preferably a liquid cooling plate.

[0039] Furthermore, as a preferred embodiment, the liquid cooling installation hole group 13 includes: at least one third hole, which is provided at the other end of the frame structure 1. Furthermore, the third hole is at least used for the user to connect the liquid cooling pipe 29.

[0040] Furthermore, as a preferred embodiment, a plurality of third holes are sequentially arranged along the width direction of the frame structure 1 .

[0041] Furthermore, as a preferred embodiment, the present invention further comprises: at least two support members 14, both of which are disposed on the inner side of the frame structure 1, and the two support members 14 are disposed close to both sides of the frame structure 1, respectively, and the lower end of the liquid cooling structure 12 is disposed on the support members 14. Furthermore, the liquid cooling structure 12 is supported by the upper surfaces of the two support members 14 contacting both sides of the lower surface of the liquid cooling structure 12. Preferably, the liquid cooling structure 12 and the support members 14 can be fixedly connected by an additional second connecting member.

[0042] Furthermore, as a preferred embodiment, each support member 14 and each reinforcement beam 11 are vertically connected.

[0043] Furthermore, as a preferred embodiment, the support member 14 and the second copper busbar fixing member 9 are preferably an integrated structure.

[0044] Furthermore, as a preferred embodiment, a BMS device 15 is provided on the battery module 3, and a BMS mounting hole group 16 is provided on the frame structure 1, with the BMS mounting hole group 16 being arranged directly opposite the BMS device 15. Furthermore, the provision of the BMS mounting hole group 16 facilitates the user's installation and removal of the BMS device 15 and electrical connection operations.

[0045] Furthermore, as a preferred embodiment, the BMS mounting hole group 16 includes: at least one fourth hole, and the fourth hole is arranged on the other side of the frame structure 1 .

[0046] Furthermore, as a preferred embodiment, a plurality of fourth holes are sequentially arranged along the length direction of the frame structure 1 .

[0047] Furthermore, as a preferred embodiment, a mounting groove 17 is provided at the upper end of the frame structure 1 , and the mounting groove 17 is used to install a sealing gasket 18 .

[0048] Furthermore, as a preferred embodiment, the mounting groove 17 is formed by the upper edge of the frame structure 1 being concave downward.

[0049] Furthermore, as a preferred embodiment, the mounting groove 17 and the sealing gasket 18 are both arranged in an annular shape.

[0050] Furthermore, as a preferred embodiment, the upper end of the frame structure 1 extends radially outward to form a first supporting edge 19, and the lower end of the frame structure 1 extends radially outward to form a second supporting edge 20. The first supporting edge 19 is provided with a plurality of first connecting holes 21, and the second supporting edge 20 is provided with a plurality of second connecting holes 22, with each first connecting hole 21 directly opposite a second connecting hole 22. Furthermore, connecting bolts 27 can be used to connect two adjacent frame structures 1 or to connect the box cover 24 and bracket 25, thereby at least achieving the combined connection of multiple box integrated modules.

[0051] Furthermore, as a preferred embodiment, the frame structure 1 further comprises: a plurality of I-beams 23, which are sequentially arranged around the periphery of the frame structure 1, with the upper and lower ends of each I-beam 23 respectively welded to the lower edge of the first supporting side 19 and the upper edge of the second supporting side 20. Furthermore, the provision of the I-beams 23 further enhances the strength of the frame structure 1.

[0052] Further, as a preferred embodiment, the cover assembly 4 is preferably used to open and close the first hole 6, the second hole 7, the third hole and the fourth hole.

[0053] Furthermore, as a preferred embodiment, the cover plate assembly 4 includes: a plurality of plate members, which can preferably be fixed at corresponding holes through an additional third connecting member.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0055] The present invention also has the following implementation methods based on the above:

[0056] like Figure 3 The figure shows a preferred embodiment of a battery system, comprising at least two of the aforementioned integrated battery box modules, and further comprising a box cover 24 and a bracket 25. The at least two integrated battery box modules are sequentially connected from top to bottom to form a box-like structure, with the box cover 24 mounted at the upper end of the box-like structure and the bracket 25 mounted at the lower end. Furthermore, different numbers of integrated box modules can be combined between the box cover 24 and the bracket 25 to meet design requirements. Furthermore, with the cooperation of the various hole structures in the frame structure 1, individual integrated box modules can be independently disassembled and maintained.

[0057] In a further embodiment of the present invention, the present invention further comprises: a plurality of lifting ears 26 , each of which is disposed on the upper end of the box cover 24 , and each of the lifting ears 26 is formed with a lifting hole.

[0058] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A box integrated module for a battery, characterized in that: include: A frame structure, wherein an accommodating space is formed on the inner side of the frame structure, the accommodating space is used to place a battery module, a copper busbar assembly is provided on the battery module, and a copper busbar mounting hole group is provided on the frame structure, the copper busbar mounting hole group is connected to the accommodating space, and the copper busbar mounting hole group is arranged opposite to the copper busbar assembly; A cover plate assembly is used at least to open or close the copper busbar mounting hole group.

2. The box integrated module for batteries according to claim 1, characterized in that: The copper busbar mounting hole group includes: at least one first hole and at least one second hole, the first hole is arranged at one end of the frame structure, and the second hole is arranged at one side of the frame structure.

3. The box integrated module for batteries according to claim 2, characterized in that: Also includes: A first copper bar fixing piece and a second copper bar fixing piece are both connected to the inner wall of the accommodating space. The first copper bar fixing piece is arranged close to the first hole, and the second copper bar fixing piece is arranged close to the second hole.

4. The box integrated module for batteries according to claim 1, characterized in that: Also includes: A plurality of reinforcing beams are each arranged on the inner side of the frame structure, and two ends of each reinforcing beam are respectively connected to two sides of the frame structure.

5. The box integrated module for batteries according to claim 1, characterized in that: A liquid cooling structure is provided at the bottom of the battery module, and a liquid cooling installation hole group is provided on the frame structure, and the liquid cooling installation hole group is arranged opposite to the liquid cooling structure.

6. The box integrated module for batteries according to claim 5, characterized in that: Also includes: At least two support members, both of which are arranged on the inner side of the frame structure, and the two support members are respectively arranged close to the two sides of the frame structure, and the lower end of the liquid cooling structure is arranged on the support members.

7. The box integrated module for batteries according to claim 1, characterized in that: The battery module is provided with a BMS device, and the frame structure is provided with a BMS mounting hole group, and the BMS mounting hole group is arranged opposite to the BMS device.

8. The box integrated module for batteries according to claim 1, characterized in that: An installation groove is provided at the upper end of the frame structure, and the installation groove is used for installing a sealing gasket.

9. The box integrated module for batteries according to claim 1, characterized in that: The upper end of the frame structure extends radially outward to form a first supporting edge, and the lower end of the frame structure extends radially outward to form a second supporting edge. The first supporting edge is provided with a plurality of first connecting holes, and the second supporting edge is provided with a plurality of second connecting holes, and each first connecting hole is directly opposite to a second connecting hole.

10. A battery system comprising at least two box integrated modules for batteries according to any one of claims 1 to 9, characterized in that: Also includes: The box cover and the bracket, at least two of the box integrated modules for the battery are connected in sequence from top to bottom to form a box-like structure, the box cover is installed at the upper end of the box-like structure, and the bracket is installed at the lower end of the box-like structure.

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