Heat dissipation device for power battery pack

Abstract

The utility model relates to the technical field of power batteries, in particular to a power battery pack heat dissipation device which comprises a battery pack. A plurality of mounting grooves are formed in the left side and the right side of the top of the isolation frame; first heat dissipation grooves and second heat dissipation grooves are formed in the two side walls and the bottom of the mounting groove correspondingly; a plurality of batteries are mounted in a plurality of mounting grooves which are distributed at equal intervals, first heat dissipation grooves and second heat dissipation grooves are formed in the two side walls and the bottom surfaces of the mounting grooves respectively, and when an air inlet fan and an exhaust fan operate, flowing air enters the first heat dissipation grooves and the second heat dissipation grooves through air flow channels; when airflow passes through the first heat dissipation grooves and the second heat dissipation grooves, heat on the surfaces of the batteries can be taken away, and the heat can be quickly exhausted to the outside through the exhaust fan after being gathered to the heat exhaust channel. By means of the design, heat dissipation can be conveniently conducted on the interior of the power battery pack, the heat dissipation effect is good, and the heat dissipation requirement of the power battery pack is met.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a heat dissipation device for a power battery pack. Background Art

[0002] The power battery is the power source of new energy vehicles. The power battery is mainly divided into battery packs, modules, and battery cells. It is not only heavy, but also has a complex structure. It is composed of multiple battery modules, and each module is composed of several to dozens of battery cells. When the power battery is running, it will generate high heat, so the reliability of temperature monitoring and heat dissipation of the power battery is crucial.

[0003] The utility model patent with the authorization announcement number CN215377508U discloses a heat dissipation structure of a power battery pack, which includes a battery pack housing and a plurality of partitions arranged on the battery pack housing, wherein a plurality of longitudinal grooves, air inlet grooves and air outlet grooves are evenly arranged on the front of the partition, wherein the air inlet grooves are located below the air outlet grooves and both pass through the two sides of the partition, wherein the air inlet grooves and the air outlet grooves are both connected to each groove, and the side of the battery pack housing is provided with air inlets respectively connected to the air inlet grooves and the air outlet grooves. and air outlet; longitudinal grooves, air inlet grooves and air outlet grooves are arranged on the partition, and air inlets and air outlets respectively connected with the air inlet grooves and air outlet grooves are arranged on the battery pack shell. When in use, the heat generated by each battery cell will be transferred to the partitions on both sides. After the partition is heated, the heat is transferred to the air in the grooves, air inlet grooves and air outlet grooves. The heated air rises to the wind grooves and finally flows out from the air outlet, while external air enters from the air inlet and air inlet grooves for replenishment. The heat is brought to the outside through a fully connected cycle with the outside world, thereby achieving a good heat dissipation effect.

[0004] Although the heat dissipation structure of the power battery pack is beneficial to the heat dissipation of the power battery pack by setting grooves, air inlet grooves and air outlet grooves, the device has the following problems when in use: due to the close arrangement of multiple batteries, heat accumulates and is difficult to dissipate when the battery is running, and the device only relies on the grooves, air inlet grooves and air outlet grooves to dissipate heat naturally, and its heat dissipation effect is limited, making it difficult for the heat accumulated between the batteries to be discharged to the outside in a timely and rapid manner, so it is difficult to meet the heat dissipation effect of the power battery pack. In view of this, we propose a heat dissipation device for a power battery pack. Utility Model Content

[0005] The purpose of the utility model is to provide a power battery pack heat dissipation device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A power battery pack heat dissipation device, comprising a battery pack;

[0008] The battery pack comprises a shell with a top opening, an exhaust box and an air inlet box are respectively installed on the front and rear outer walls of the shell, two partitions are installed in the top opening of the shell, a heat exhaust channel is opened on one side of the partition, and a plurality of vertically arranged connection slots are opened on the partition; an air inlet slot connected to the air inlet box is opened on the rear end surface of the shell, and two through slots are opened on the front end surface of the shell respectively connected to the heat exhaust channel and the exhaust box;

[0009] The bottom of the air inlet box is open, and a detachable filter assembly for filtering the intake air is installed at the bottom opening of the air inlet box. Two intake fans are installed on the rear end face of the air inlet box; two exhaust fans are installed on the front end face of the air inlet box;

[0010] An isolation frame is installed in the opening of the housing, a through-type airflow channel is provided inside the isolation frame, a plurality of mounting grooves are provided on the top of the isolation frame at the left and right sides, and the mounting grooves are respectively connected with the airflow channel and the connecting groove; a first heat dissipation groove and a second heat dissipation groove are respectively provided on the two side walls and the bottom of the mounting groove; batteries are installed in the mounting grooves;

[0011] A removable sealing cover is installed on the top of the housing.

[0012] Preferably, the sealing cover is fixedly connected to the battery by bolts.

[0013] Preferably, the isolation frame is a product made of plastic material, and the isolation frame is fixedly connected to the inner top of the shell by bolts.

[0014] Preferably, the filter assembly includes a bottom plate located at the bottom of the air inlet box, two side plates inserted into the air inlet box are fixed on the top of the bottom plate, two detachable frames are provided between the two side plates, and dust filters are installed at the openings of the frames.

[0015] Preferably, the cross-section of the frame is in a U-shape, and both ends of the frame are plug-fitted with the side panels on both sides.

[0016] Preferably, the size of the mounting groove is compatible with the size of the battery.

[0017] Preferably, the first heat dissipation grooves and the second heat dissipation grooves are linearly distributed with equal intervals, and the width of the first heat dissipation grooves and the second heat dissipation grooves is 0.5-1.5 cm.

[0018] Preferably, the shell and the partition are an integrally formed structure, and the shell and the partition are manufactured from aluminum alloy.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] By setting up a battery pack: multiple batteries are installed in multiple equally spaced installation slots, and the two side walls and the bottom surface of the installation slot are respectively provided with a first heat dissipation slot and a second heat dissipation slot. When the intake fan and the exhaust fan are running, the flowing gas enters into the multiple first heat dissipation slots and the second heat dissipation slots through the air flow channel. When the air flow passes through the first heat dissipation slot and the second heat dissipation slot, the heat on the surface of the battery can be taken away, and the heat can be quickly discharged to the outside through the exhaust fan after being gathered in the heat exhaust channel. This design not only facilitates the heat dissipation of the interior of the power battery pack, but also has a better heat dissipation effect, thereby ensuring the heat dissipation needs of the power battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a partial structural schematic diagram of the utility model;

[0023] Figure 3 It is a partial structural cross-sectional view of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the housing in the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the isolation frame in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the filter assembly in the utility model.

[0027] In the figure:

[0028] 1. Battery pack; 10. Casing; 101. Heat exhaust channel; 102. Air inlet slot; 103. Through slot; 11. Partition; 111. Connection slot; 12. Air inlet box; 13. Exhaust box; 14. Intake fan; 15. Exhaust fan; 16. Sealing cover; 17. Isolation frame; 171. Mounting slot; 172. Air flow channel; 173. First heat dissipation slot; 174. Second heat dissipation slot; 18. Filter assembly; 181. Bottom plate; 182. Side plate; 183. Frame; 184. Dust filter; 19. Battery. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] This embodiment provides a technical solution:

[0031] See also Figure 1-Figure 6 A heat dissipation device for a power battery pack includes a battery pack 1. The battery pack 1 includes a shell 10 with an opening at the top, and an exhaust box 13 and an air inlet box 12 are respectively installed on the front and rear outer walls of the shell 10. Two partitions 11 are installed in the top opening of the shell 10, and a heat exhaust channel 101 is opened on one side of the partition 11, and a plurality of vertically arranged connecting grooves 111 are opened on the partition 11; an air inlet groove 102 connected to the air inlet box 12 is opened on the rear end surface of the shell 10, and two through grooves 103 connected to the heat exhaust channel 101 and the exhaust box 13 are respectively opened on the front end surface of the shell 10; the bottom of the air inlet box 12 is open, and a detachable filter assembly for filtering the intake air is installed at the bottom opening of the air inlet box 12 18. Two air intake fans 14 are installed on the rear end surface of the air inlet box 12; two exhaust fans 15 are installed on the front end surface of the air inlet box 12; an isolation frame 17 is installed in the opening of the outer shell 10, and a through-type air flow channel 172 is provided inside the isolation frame 17, and a plurality of mounting grooves 171 are provided on the top of the isolation frame 17 on the left and right sides, and the mounting grooves 171 are respectively connected with the air flow channel 172 and the connecting groove 111; the two side walls and the bottom of the mounting groove 171 are respectively provided with a first heat dissipation groove 173 and a second heat dissipation groove 174; batteries 19 are installed in the mounting grooves 171; a removable sealing cover 16 is installed on the top of the outer shell 10.

[0032] Furthermore, the filter assembly 18 includes a bottom plate 181 located at the bottom of the air inlet box 12, and two side plates 182 inserted into the air inlet box 12 are fixed on the top of the bottom plate 181. Two detachable frames 183 are provided between the two side plates 182, and dust filters 184 are installed at the openings of the frames 183. The dust filter 184 can filter the incoming gas to prevent larger particles such as dust from entering the outer shell 10, thereby preventing dust accumulation inside the outer shell 10.

[0033] In this embodiment, the sealing cover 16 and the battery 19 are fixedly connected by bolts, and the bolt fixing method ensures the connection stability between the sealing cover 16 and the battery 19, and at the same time ensures the sealing performance of the connection between the sealing cover 16 and the battery 19.

[0034] In this embodiment, the isolation frame 17 is made of plastic material, and the isolation frame 17 is fixedly connected to the inner top of the shell 10 by bolts. This design facilitates the stable installation of the isolation frame 17 inside the shell 10 and ensures the installation stability of the isolation frame 17.

[0035] In this embodiment, the cross-sectional shape of the frame 183 is in the shape of a U, and the two ends of the frame 183 are plugged into the side panels 182 on both sides. The plug-in fit makes it easy to disassemble and assemble the frame 183, and it is also easy to remove the frame 183 to clean the dust filter 184.

[0036] In this embodiment, the size of the mounting groove 171 is adapted to the size of the battery 19 . This design facilitates the installation of the battery 19 in the mounting groove 171 , thereby ensuring the stability of the installation of the battery 19 .

[0037] In this embodiment, the first heat dissipation groove 173 and the second heat dissipation groove 174 are linearly and evenly distributed, and the width of the first heat dissipation groove 173 and the second heat dissipation groove 174 is 0.5-1.5 cm, and the preferred width of the first heat dissipation groove 173 and the second heat dissipation groove 174 is 1 cm. This design facilitates smooth flow of air in the first heat dissipation groove 173 and the second heat dissipation groove 174, which is beneficial to heat dissipation of the battery 19.

[0038] In this embodiment, the outer shell 10 and the partition 11 are an integrally formed structure, and the outer shell 10 and the partition 11 are made of aluminum alloy. The integrally formed outer shell 10 and the partition 11 have higher structural strength, ensuring the connection stability between the outer shell 10 and the partition 11, and ensuring the protective effect of the outer shell 10 on the battery 19.

[0039] It should be supplemented that the outer wall of the shell 10 in this embodiment is coated with an anti-corrosion coating. This design can improve the anti-corrosion effect of the shell 10 and increase the service life of the shell 10.

[0040] During specific use, the user first turns on the power of the intake fan 14 and the exhaust fan 15, and the intake fan 14 and the exhaust fan 15 start working. The intake fan 14 guides the airflow into the air inlet box 12, and at the same time, the airflow enters the air flow channel 172 through the air inlet slot 102, and at the same time, the airflow enters the multiple installation slots 171 on both sides, and flows in the first heat dissipation slot 173 and the second heat dissipation slot 174. At this time, the airflow is blown to the outer wall of the battery 19, and the heat on the battery 19 is taken away by the airflow, and then the heat follows the airflow into the heat exhaust channels 101 on both sides, and at the same time, the heat follows the airflow through the slot 103 and is discharged into the exhaust box 13 on the front side, and is discharged to the outside through the exhaust fan 15.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A power battery pack heat dissipation device, comprising a battery pack (1), Features: The battery pack (1) comprises a shell (10) with a top opening, an exhaust box (13) and an air inlet box (12) are respectively mounted on the front and rear outer walls of the shell (10), two partitions (11) are mounted in the top opening of the shell (10), a heat exhaust channel (101) is provided on one side of each partition (11), and a plurality of vertically arranged connecting grooves (111) are provided on each partition (11); an air inlet groove (102) connected to the air inlet box (12) is provided on the rear end surface of the shell (10), and two through grooves (103) respectively connected to the heat exhaust channel (101) and the exhaust box (13) are provided on the front end surface of the shell (10); The bottom of the air inlet box (12) is open, and a detachable filter assembly (18) for filtering the intake air is installed at the bottom opening of the air inlet box (12). Two intake fans (14) are installed on the rear end surface of the air inlet box (12); and two exhaust fans (15) are installed on the front end surface of the air inlet box (12); An isolation frame (17) is installed in the opening of the housing (10), a through-type airflow channel (172) is provided inside the isolation frame (17), a plurality of installation slots (171) are provided on the top of the isolation frame (17) at the left and right sides, and the installation slots (171) are respectively connected to the airflow channel (172) and the connection slot (111); a first heat dissipation slot (173) and a second heat dissipation slot (174) are respectively provided on the two side walls and the bottom of the installation slot (171); and batteries (19) are installed in the installation slots (171); A detachable sealing cover (16) is installed on the top of the housing (10).

2. The power battery pack heat dissipation device according to claim 1, Features: The sealing cover (16) is fixedly connected to the battery (19) via bolts.

3. The power battery pack heat dissipation device according to claim 1, Features: The isolation frame (17) is a product made of plastic material, and the isolation frame (17) is fixedly connected to the inner top of the outer shell (10) by bolts.

4. The power battery pack heat dissipation device according to claim 1, Features: The filter assembly (18) comprises a bottom plate (181) located at the bottom of the air inlet box (12); two side plates (182) inserted into the air inlet box (12) are fixed on the top of the bottom plate (181); two detachable frames (183) are provided between the two side plates (182); and dust filters (184) are installed at the openings of the frames (183).

5. The power battery pack heat dissipation device according to claim 4, Features: The cross-section of the frame (183) is in the shape of a square, and the two ends of the frame (183) are plugged into and matched with the side panels (182) on both sides.

6. The power battery pack heat dissipation device according to claim 1, Features: The size of the mounting groove (171) is compatible with the size of the battery (19).

7. The power battery pack heat dissipation device according to claim 1, Features: The first heat dissipation grooves (173) and the second heat dissipation grooves (174) are both linearly distributed at equal intervals, and the width of the first heat dissipation grooves (173) and the second heat dissipation grooves (174) is 0.5-1.5 cm.

8. The power battery pack heat dissipation device according to claim 1, Features: The shell (10) and the partition (11) are an integrally formed structure, and the shell (10) and the partition (11) are manufactured products made of aluminum alloy.

Images