Large-current battery heat dissipation structure

Abstract

The utility model provides a large-current battery heat dissipation structure. The large-current battery heat dissipation structure comprises a case, a BMS (Battery Management System) plate, a fixed bracket, a heat dissipater and a cover plate, a placement groove is formed in the top of the case, the BMS board is arranged in the placement groove, the fixing support is arranged in the placement groove, the radiator is arranged on the fixing support, and the radiator abuts against the BMS board; and the cover plate is arranged on the case, and the cover plate movably covers the placing groove. According to the high-current battery heat dissipation structure, the case, the BMS plate, the fixed bracket, the heat dissipater and the cover plate are integrally matched and mounted, so that the high-current battery heat dissipation structure is simple in structure and low in cost, heat generated during high-current charging and discharging operation of the battery can be effectively conducted into air, the overall operation temperature of the battery is reduced, the reliability of the battery is improved, and the service life of the battery is prolonged. Meanwhile, the situation that a user needs to purchase multiple sets of batteries for parallel operation and convergence to increase charging and discharging current is reduced, and the use cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a big current battery heat radiation structure. BACKGROUND

[0002] With the growing energy storage market, energy storage battery products are developing towards large capacity, and as the capacity increases, the battery charging and discharging current also increases, and the battery heat dissipation problem begins to stand out. The battery products on the market are limited by the heat dissipation capacity of BMS, and the battery current is mostly below 150A, the battery charging and discharging power is small, and the user often needs to purchase multiple batteries and connect them in parallel to increase the total charging and discharging battery and power, increasing the user cost.

[0003] Some batteries on the market do not have heat dissipation design for BMS, and the charging and discharging battery is small; some batteries use liquid cooling scheme for heat dissipation to improve the heat dissipation performance, but the cost is high and the structure is complex. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model adopts the following technical scheme: a big current battery heat radiation structure, comprising: a case, a BMS board, a fixing support, a radiator and a cover plate;

[0005] The top of the case is provided with a placing groove, the BMS board is arranged in the placing groove, the fixing support is arranged in the placing groove, the radiator is arranged on the fixing support, and the radiator is in abutment with the BMS board.

[0006] The cover plate is arranged on the case, and the cover plate covers the placing groove.

[0007] Further, the BMS board is fixed in the placing groove by bolts.

[0008] Further, a notch is formed in the BMS board, and the MOSFET module on the BMS board is located in the notch.

[0009] Further, it further includes a heat-conducting pad, the heat-conducting pad is placed in the notch, and one side of the heat-conducting pad is in abutment with the MOSFET module, and the other side is in abutment with the radiator.

[0010] Further, a plurality of first screw holes are formed in the fixing support, a plurality of second screw holes are formed in the radiator, each first screw hole is in communication with a second screw hole, and a plurality of screws are detachably arranged on the fixing support, each screw passes through a second screw hole and is screwed with a first screw hole.

[0011] Further, a fin structure is arranged on the side of the radiator away from the BMS board, and the fin structure faces the cover plate.

[0012] Further, the material of the heat sink is aluminum profile.

[0013] Further, the cover plate is fixed on the case by screws.

[0014] Further, the cover plate is provided with louvers for air circulation and heat exchange between the case and the heat sink.

[0015] Further, the heat-conducting pad is a silica gel pad.

[0016] The beneficial effects of the utility model are that: using the high-current battery heat dissipation structure, through the cooperation and installation of the case, the BMS plate, the fixing support, the heat sink and the cover plate, the structure is simple, the cost is low, the heat generated by the battery during high-current charging and discharging operation can be effectively conducted to the air, the battery operating temperature is reduced, the battery reliability is increased, and the service life of the battery is prolonged. At the same time, the user needs to purchase multiple groups of batteries to parallelly connect and flow to increase the charging and discharging current, and the use cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings further illustrate the utility model, but the embodiments in the drawings do not constitute any limitation on the utility model.

[0018] Fig. 1 A direction schematic view of a high-current battery heat dissipation structure provided for an embodiment;

[0019] Fig. 2 A direction explosion schematic view of a high-current battery heat dissipation structure provided for an embodiment. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be further described below in combination with the drawings of the embodiments of the utility model. The utility model is not limited to the following specific embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] As shown in the drawings, Figs. 1-2 A high-current battery heat dissipation structure, comprising: a case 100, a BMS plate 200, a fixing support 300, a heat sink 400 and a cover plate 500; the top of the case 100 is provided with a placing groove 110, the BMS plate 200 is arranged in the placing groove 110, the fixing support 300 is arranged in the placing groove 110, the heat sink 400 is arranged on the fixing support 300, and the heat sink 400 abuts against the BMS plate 200; the cover plate 500 is arranged on the case 100, and the cover plate 500 movably covers the placing groove 110.

[0022] Specifically, the BMS board 200 is fixed in the placing groove 110 by bolts. A notch 210 is formed on the BMS board 200, and a MOSFET module 220 on the BMS board 200 is located in the notch 210. Further, the large-current battery heat dissipation structure further comprises a heat-conducting pad 600, which is placed in the notch 210 and abuts against the MOSFET module 220 on one side and abuts against the heat sink 400 on the other side.

[0023] In one embodiment, a plurality of first screw holes are formed on the fixing support 300, and a plurality of second screw holes are formed on the heat sink 400. Each first screw hole is in movable communication with a second screw hole, and a plurality of screws are detachably arranged on the fixing support 300. Each screw passes through a second screw hole and is screwed with a first screw hole. The side of the heat sink 400 away from the BMS board 200 is provided with a fin structure, and the fin structure faces the cover plate 500. The material of the heat sink 400 is aluminum profile. The cover plate 500 is fixed on the case 100 by screws 510. It is worth mentioning that the cover plate 500 is provided with louvers 520, which are used to realize the circulation and heat exchange of air between the outside of the case 100 and the heat sink 400. The heat-conducting pad 600 is a silica gel pad.

[0024] In the installation, first, the BMS board 200 is fixed in the placing groove 110 of the cabinet 100 by bolts, and the fixing support 300 is installed on the four inner side walls of the placing groove 110 and located outside the whole BMS board 200. At this time, the notch 210 of the BMS board 200 is upward, and the MOSFET module 220 is placed in the notch 210 area due to the large amount of heat generated in the working process, and then the heat-conducting pad 600 is placed, and the heat sink 400 is fixed on the fixing support 300. That is, the gap between the heat sink 400 and the notch 210 on the BMS board 200 is filled by placing the heat-conducting pad 600, that is, except for the notch 210 area, the other areas on the BMS board 200 are directly abutted with the heat sink 400. That is, when the battery runs in a large current, the heat generated by the MOSFET module 220 is conducted to the heat sink 400, and since the heat sink 400 is made of aluminum profile and provided with fin structure, the surface area of the heat sink 400 is significantly increased, which is conducive to dissipating heat to the air through natural convection and radiation. Further, since the fin structure of the heat sink 400 is upward, that is, toward the direction of the cover plate 500, the flow and diffusion of hot air are more conducive. It is worth mentioning that by providing the louver 520 on the cover plate 500, on the one hand, the air circulation and heat exchange between the cabinet 100 outside and the heat sink 400 are realized, so that the hot air of the heat sink 400 is diffused to the outside of the cabinet 100, and on the other hand, the dust and impurities in the air are not easy to directly fall on the heat sink 400 to affect the heat dissipation performance of the heat sink 400, thereby effectively ensuring the long-term heat dissipation performance of the heat dissipation structure.

[0025] In summary, the above-mentioned embodiments are not the limiting embodiments of the present application, and any modification or equivalent deformation made by those skilled in the art on the basis of the essential content of the present application is within the technical scope of the present application.

Claims

1. A large current battery heat dissipation structure, characterized in that, Include: The cabinet, BMS board, fixed support, radiator and cover plate; The top of the cabinet is provided with a placing groove, the BMS board is arranged in the placing groove, the fixed support is arranged in the placing groove, the radiator is arranged on the fixed support, and the radiator is in abutment with the BMS board. The cover plate is arranged on the cabinet, and the cover plate is movably covered on the placing groove.

2. The high current battery heat sink structure of claim 1, wherein: The BMS board is fixed in the placing groove by bolts.

3. The high current battery heat sink structure of claim 2, wherein: The BMS board is provided with a notch, and the MOSFET module on the BMS board is located in the notch.

4. The high current battery heat sink structure of claim 3, wherein: Further comprising a heat-conducting pad, the heat-conducting pad is placed in the notch, and one side of the heat-conducting pad is in abutment with the MOSFET module, and the other side is in abutment with the radiator.

5. The high current battery heat sink structure of claim 4, wherein: The fixed support is provided with a plurality of first screw holes, the radiator is provided with second screw holes, each first screw hole is in communication with a second screw hole, and the fixed support is detachably provided with a plurality of screws, each screw is screwed with a first screw hole after passing through a second screw hole.

6. The high current battery heat sink structure of claim 5, wherein: The side of the radiator away from the BMS board is provided with a fin structure, and the fin structure faces the cover plate.

7. The high current battery heat sink structure of claim 6, wherein: The material of the radiator is aluminum profile.

8. The high current battery heat sink structure of claim 7, wherein: The cover plate is fixed on the cabinet by screws.

9. The high current battery heat sink structure of claim 8, wherein: The cover plate is provided with a louver, which is used to realize the circulation and heat exchange of air between the cabinet and the radiator.

10. The high current battery heat sink structure of claim 4, wherein: The heat-conducting pad is a silica gel pad.

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