Power battery module with cooling structure

Abstract

The invention relates to the technical field of battery modules, in particular to a power battery module with a cooling structure, and is characterized in that the power battery module comprises a shell, and two supporting copper plates are fixedly connected to the surface of the inner wall of the shell. A dust filtering plate and a protective net prevent external impurities from entering the shell, normal work of the battery module is guaranteed, the extrusion copper plate pushes the battery module to be attached to the outer surface of the supporting copper plate by rotating the lead screw, and heat generated by the battery module is transmitted into the extrusion copper plate and the supporting copper plate through heat transfer. Through the arrangement of the plurality of first heat dissipation fins and the plurality of second heat dissipation fins, the contact area between the heat and the air is increased, the three air channels are arranged, the heat dissipation efficiency is improved, the heat dissipation of the battery module is uniform, and the heat dissipation efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery modules, and in particular to a power battery module with a cooling structure. Background Art

[0002] New energy vehicles use power batteries for energy supply. The batteries will generate heat during use. If this heat is not dissipated in time, it will seriously affect the performance and service life of the battery. Currently, most battery shells are single-layer metal shells. Battery modules composed of multiple batteries will generate a lot of heat during use. Therefore, additional heat dissipation elements are usually required to dissipate the heat in the battery module to improve the performance and service life of the battery module. The battery module is very sensitive to temperature and will generate a lot of heat during the charging and discharging process.

[0003] However, in actual use, the power battery pack is mainly cooled by a cooling plate. The cooling plate is arranged at the bottom of the power battery pack and is designed with a water tank inside. The power battery pack can be cooled by passing liquid into the water tank. Since the cooling plate is only arranged at the bottom of the power battery pack, the top of the power battery pack cannot be cooled, and thus the power battery pack cannot be cooled well. At the same time, since the liquid in the water tank can only flow in a single direction, the temperature of the liquid will become higher and higher as the liquid flows, so that the single battery located downstream of the liquid flow direction cannot be cooled well, resulting in uneven temperatures of each single battery, which is defective. Summary of the invention

[0004] In view of the problems mentioned in the background technology, an object of the present invention is to provide a power battery module with a cooling structure to solve the technical problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A power battery module with a cooling structure comprises an outer shell, the inner wall surface of the outer shell is fixedly connected to two supporting copper plates, the inner wall surface of the outer shell is provided with a plurality of battery modules, one side surface of the plurality of battery modules is provided with an extruded copper plate, one side surface of the plurality of extruded copper plates is fixedly connected to a connecting pipe, the inner wall surfaces of the plurality of connecting pipes are threadedly connected to a screw rod, one end of the plurality of screw rods is rotatably connected to the inner wall surface of the outer shell through a bearing, and the upper surface of the outer shell is fixedly connected to a protective plate.

[0007] By adopting the above technical solution, the battery module is clamped and fixed by cooperating with the supporting copper plate and the extruded copper plate. The installation method is simple and quick. In addition, the extruded copper plate and the supporting copper plate have good thermal conductivity, which can quickly transfer the heat generated in the battery module and improve the heat dissipation effect.

[0008] Preferably, a rectangular frame is provided on one side surface of the shell, and three brackets are fixedly connected to the inner wall surface of the rectangular frame at equal intervals.

[0009] By adopting the above technical solution, after the rectangular frame is connected with the shell, air circulation inside the shell is guaranteed, and heat can be circulated through the air. The three brackets provide installation positions for installing the motor.

[0010] Preferably, one side surface of the three brackets is fixedly connected to a motor, and the output ends of the three motors are fixedly connected to a fan blade group.

[0011] By adopting the above technical solution, the motor is fixed to one side surface of the bracket by bolts, and the air flow rate inside the shell is accelerated by driving the fan blade group.

[0012] Preferably, a plurality of first heat dissipation fins are fixedly connected to opposite surfaces of the two supporting copper plates, and a plurality of second heat dissipation fins are fixedly connected to one side surface of the plurality of extruded copper plates.

[0013] By adopting the above technical solution, the plurality of second heat dissipation fins and the plurality of first heat dissipation fins are respectively integrated with the extruded copper plate and the supporting copper plate, thereby increasing the heat dissipation area and improving the heat dissipation efficiency.

[0014] Preferably, a dust filter plate is embedded in one side surface of the rectangular frame, and a handle is fixedly connected to the upper surface of the dust filter plate.

[0015] By adopting the above technical solution, the dust filter plate is fixed to the rectangular frame by bolts. When the dust filter plate needs to be replaced or cleaned, the bolts are unscrewed and the dust filter plate is lifted by the handle to facilitate force and improve the user experience.

[0016] Preferably, a protective net is embedded in one side surface of the shell, and the outer surface of the protective net is fixed to the inner wall surface of the shell by bolts.

[0017] By adopting the above technical solution, the protective net shields the outer shell to prevent external debris from entering.

[0018] In summary, the present invention mainly has the following beneficial effects:

[0019] When in use, the rectangular frame provides support for the three motors through three brackets. The motor drives the three fan blade groups to rotate, driving the air flow, and introducing the air into the interior of the shell through the dust filter plate, and then discharged through the protective net. The dust filter plate and the protective net prevent external debris from entering the interior of the shell, ensuring the normal operation of the battery module. By rotating the screw rod, the extruded copper plate pushes the battery module to fit the outer surface of the supporting copper plate. The heat generated by the battery module is transmitted to the interior of the extruded copper plate and the supporting copper plate through heat transfer, so that the circulating air takes away the heat from the surface of the supporting copper plate and the extruded copper plate. Multiple first heat dissipation fins and second heat dissipation fins increase the contact area between heat and air. Three air ducts are set to improve the heat dissipation efficiency, so that the battery module dissipates heat evenly, effectively increasing the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional cross-sectional schematic diagram of the present invention;

[0021] Figure 2 is a three-dimensional cross-sectional schematic diagram of the housing of the present invention;

[0022] Figure 3 is a three-dimensional schematic diagram of an extruded copper plate of the present invention;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the positioning block of the present invention.

[0024] Figure numerals: 1. outer shell; 2. protective plate; 3. rectangular frame; 4. bracket; 5. motor; 6. fan blade group; 7. dust filter plate; 8. handle; 9. supporting copper plate; 10. first heat dissipation fin; 11. battery module; 12. extruded copper plate; 13. second heat dissipation fin; 14. positioning frame; 15. protective net; 16. positioning block; 17. connecting pipe; 18. screw rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] refer to Figure 1-4A power battery module with a cooling structure comprises a shell 1, the inner wall surface of the shell 1 is fixedly connected to two supporting copper plates 9, the inner wall surface of the shell 1 is provided with a plurality of battery modules 11, one side surface of the plurality of battery modules 11 is provided with an extruded copper plate 12, one side surface of the plurality of extruded copper plates 12 is fixedly connected to a connecting pipe 17, the inner wall surface of the plurality of connecting pipes 17 is threadedly connected to a screw rod 18, one end of the plurality of screw rods 18 is rotatably connected to the inner wall surface of the shell 1 through a bearing, a protective plate 2 is fixedly connected to the upper surface of the shell 1, a rectangular frame 3 is connected to the one side surface of the shell 1, three brackets 4 are equidistantly fixedly connected to the inner wall surface of the rectangular frame 3, one side surface of the three brackets 4 is fixedly connected to a motor 5, the output ends of the three motors 5 are fixedly connected to a fan blade group 6, a plurality of first heat dissipation fins 10 are fixedly connected to the opposite surfaces of the two supporting copper plates 9, a plurality of second heat dissipation fins 13 are fixedly connected to one side surface of the plurality of extruded copper plates 12, a dust filter plate 7 is embedded in one side surface of the rectangular frame 3, and the dust filter plate 7 A handle 8 is fixedly connected to the upper surface of the housing 1, and a protective net 15 is embedded on one side surface of the housing 1. The outer surface of the protective net 15 is fixed to the inner wall surface of the housing 1 by bolts. When in use, the rectangular frame 3 provides support for the three motors 5 through three brackets 4. The motor 5 drives the three fan blade groups 6 to rotate, drives the air flow, and introduces the air into the interior of the housing 1 through the dust filter plate 7, and then discharges it through the protective net 15. The dust filter plate 7 and the protective net 15 prevent external debris from entering the interior of the housing 1 to ensure the normal operation of the battery module 11. By rotating the screw rod 18, the extruded copper plate 12 pushes the battery module 11 to fit the outer surface of the supporting copper plate 9. The heat generated by the battery module 11 is transmitted to the interior of the extruded copper plate 12 and the supporting copper plate 9 through heat transfer, so that the circulating air takes away the heat on the surface of the supporting copper plate 9 and the extruded copper plate 12. Multiple first heat dissipation fins 10 and second heat dissipation fins 13 increase the contact area between heat and air. Three air ducts are set to improve the heat dissipation efficiency, so that the battery module 11 dissipates heat evenly, ensuring the normal operation of the battery module 11.

[0027] refer to Figure 1-4 The first heat dissipation fins 10 and the second heat dissipation fins 13 are equidistantly distributed, one side surface of the plurality of battery modules 11 is fixedly connected with a positioning frame 14, the inner wall surfaces of the plurality of positioning frames 14 are embedded with positioning blocks 16, one side surface of the plurality of positioning blocks 16 is fixedly connected to the outer surface of the extruded copper plate 12, one end of the positioning block 16 is embedded in the interior of the positioning frame 14, when the extruded copper plate 12 and the supporting copper plate 9 clamp the battery module 11, the positioning block 16 is completely embedded in the interior of the positioning frame 14, when the battery module 11 is subjected to force, the positioning block 16 cooperates with the positioning frame 14 to avoid shaking of the battery module 11 after being subjected to force, thereby ensuring the structural stability of the battery module 11, avoiding the battery module 11 from hitting the outer shell 1 and the protective plate 2 after displacement, and avoiding friction between the battery module 11 and the supporting copper plate 9 and the extruded copper plate 12, thereby ensuring the service life of the components.

[0028] Working principle: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when in use, the rectangular frame 3 provides support for the three motors 5 through the three brackets 4. The motor 5 drives the three fan blade groups 6 to rotate, driving the air flow, and introducing the air into the interior of the housing 1 through the dust filter plate 7, and then discharged through the protective net 15. The dust filter plate 7 and the protective net 15 prevent external debris from entering the interior of the housing 1, ensuring the normal operation of the battery module 11. By rotating the screw 18, the extruded copper plate 12 pushes the battery module 11 to fit the outer surface of the supporting copper plate 9. The heat generated by the battery module 11 is transmitted to the interior of the extruded copper plate 12 and the supporting copper plate 9 through heat transfer, so that the circulating air takes away the heat from the surface of the supporting copper plate 9 and the extruded copper plate 12 , multiple first heat dissipation fins 10 and second heat dissipation fins 13 increase the contact area between heat and air. When installing the battery module 11, one end of the positioning block 16 is embedded in the interior of the positioning frame 14. When the extruded copper plate 12 and the supporting copper plate 9 clamp the battery module 11, the positioning block 16 is completely embedded in the interior of the positioning frame 14. When the battery module 11 is subjected to force, the positioning block 16 cooperates with the positioning frame 14 to prevent the battery module 11 from shaking after being subjected to force, thereby ensuring the structural stability of the battery module 11, preventing the battery module 11 from colliding with the outer shell 1 and the protective plate 2 after displacement, and also preventing the battery module 11 from rubbing against the supporting copper plate 9 and the extruded copper plate 12, thereby ensuring the service life of the components.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power battery module with a cooling structure, comprising a housing (1), characterized in that: Two supporting copper plates (9) are fixedly connected to the inner wall surface of the shell (1), a plurality of battery modules (11) are arranged on the inner wall surface of the shell (1), one side surface of the plurality of battery modules (11) is arranged with an extruded copper plate (12), one side surface of the plurality of extruded copper plates (12) is fixedly connected with a connecting pipe (17), the inner wall surfaces of the plurality of connecting pipes (17) are threadedly connected with a screw rod (18), one end of the plurality of screw rods (18) is rotatably connected to the inner wall surface of the shell (1) via a bearing, and a protective plate (2) is fixedly connected to the upper surface of the shell (1).

2. A power battery module with a cooling structure according to claim 1, characterized in that: A rectangular frame (3) is provided on one side surface of the housing (1), and three brackets (4) are fixedly connected at equal intervals to the inner wall surface of the rectangular frame (3).

3. A power battery module with a cooling structure according to claim 2, characterized in that: One side surface of the three brackets (4) is fixedly connected to a motor (5), and the output ends of the three motors (5) are fixedly connected to a fan blade group (6).

4. The power battery module with a cooling structure according to claim 1, characterized in that: A plurality of first heat dissipation fins (10) are fixedly connected to the opposing surfaces of the two supporting copper plates (9), and a plurality of second heat dissipation fins (13) are fixedly connected to one side surface of the plurality of extruded copper plates (12).

5. The power battery module with a cooling structure according to claim 2, characterized in that: A dust filter plate (7) is embedded on one side surface of the rectangular frame (3), and a handle (8) is fixedly connected to the upper surface of the dust filter plate (7).

6. The power battery module with a cooling structure according to claim 2, characterized in that: A protective net (15) is embedded in one side surface of the outer shell (1), and the outer surface of the protective net (15) is fixed to the inner wall surface of the outer shell (1) by bolts.

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