Power locomotive battery pack heat dissipation device

Abstract

The utility model discloses a heat dissipation device for a battery pack of a power locomotive, which relates to the field of air cooling heat dissipation of the battery pack and comprises two groups of heat dissipation pipes arranged above and below the inner wall of a battery shell, the heat dissipation pipes are of U-shaped structures, one port of each heat dissipation pipe is an air inlet, the other port of each heat dissipation pipe is an air outlet, and the heat dissipation pipes are connected with the heat dissipation pipes. One end of the heat dissipation pipe penetrates to the outside of an end plate of the battery shell, an air outlet end of a C-shaped structure is welded to the end of an air outlet of the heat dissipation pipe, an air inlet end of a Z-shaped structure is welded to an air inlet of the heat dissipation pipe, and the input end of the air inlet end is connected with an air inlet nozzle; the inner wall of the air inlet nozzle is of a conical surface structure, and an opening in the end, away from the heat dissipation pipe, of the air inlet nozzle is a wide opening. The air inlet nozzle is arranged, and the air outlet direction of the air outlet end is arranged to be opposite to the air inlet direction, so that the air inlet speed and the heat dissipation speed can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of air cooling and heat dissipation of battery packs, in particular to a heat dissipation device for a battery pack of a power locomotive. Background Art

[0002] The power source of new energy vehicles is the battery modules in the battery pack. When the battery is discharging, it will generate a lot of heat. Excessive heat will cause the battery to spontaneously combust or even explode.

[0003] The heat dissipation methods in the prior art include: liquid cooling cycle heat dissipation, air cooling cycle heat dissipation and heat dissipation through natural wind during driving. The above three methods all use the flow medium to enter the heat dissipation pipe to produce heat exchange reaction with the battery discharge heat;

[0004] In the natural air heat dissipation method, the air inlet of the heat pipe is relatively narrow, the air inlet speed cannot be further increased, and the air outlet of the heat pipe is aligned with the air inlet, which easily causes the air after heat exchange to enter the heat pipe again, resulting in poor heat dissipation effect. Utility Model Content

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

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat dissipation device for a power locomotive battery pack, comprising two groups of heat dissipation pipes installed above and below the inner wall of a battery housing, the heat dissipation pipes are in a "U"-shaped structure, one port of the heat dissipation pipes is an air inlet, and the other port of the heat dissipation pipes is an air outlet, one end of the heat dissipation pipes penetrates the outside of the end plate of the battery housing, an air outlet terminal in a "C"-shaped structure is welded to the air outlet end of the heat dissipation pipe, an air inlet terminal in a "Z"-shaped structure is welded to the air inlet of the heat dissipation pipe, and an air inlet nozzle is connected to the input end of the air inlet terminal;

[0007] The inner wall of the air inlet nozzle is in a conical structure, and the end of the air inlet nozzle away from the heat dissipation pipe has a wide opening, and the end of the air inlet nozzle butting against the air inlet end head has a narrow opening.

[0008] As a further solution of the utility model: the air outlet end penetrates to the top of the end plate, and the direction of the output port of the air outlet end is opposite to the direction of the wide mouth of the air inlet nozzle.

[0009] As a further solution of the utility model: one end of the end plate is an open structure, and a filter screen for blocking and intercepting dust is installed at the opening, and the frame of the filter screen is fixed to the opening edge of the end plate by a bolt assembly.

[0010] As a further solution of the utility model: a circular hole for the air outlet end to pass through is opened on the end plate.

[0011] As a further solution of the utility model: the bending parts of the air outlet end and the air inlet nozzle are both in arc-shaped structures.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting the air inlet nozzle and setting the air outlet direction of the air outlet end to the opposite direction of the air inlet direction, the air intake speed and heat dissipation speed can be effectively increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the mechanism of the utility model from another perspective;

[0016] Figure 3 The utility model is a schematic diagram of the connection between the heat dissipation pipe and the air outlet end and the air inlet end.

[0017] In the figure: 1. end plate; 2. heat dissipation pipe; 3. air outlet terminal; 4. air inlet terminal; 5. air inlet nozzle. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 3 In an embodiment of the utility model, a heat dissipation device for a power locomotive battery pack includes two groups of heat dissipation pipes 2 installed above and below the inner wall of a battery shell, the heat dissipation pipe 2 is a "U"-shaped structure, one port of the heat dissipation pipe 2 is an air inlet, and the other port of the heat dissipation pipe 2 is an air outlet, one end of the heat dissipation pipe 2 passes through the outside of the end plate 1 of the battery shell, an air outlet terminal 3 with a "C"-shaped structure is welded to the air outlet end of the heat dissipation pipe 2, an air inlet terminal 4 with a "Z"-shaped structure is welded to the air inlet of the heat dissipation pipe 2, and an air inlet nozzle 5 is connected to the input end of the air inlet terminal 4; the inner wall of the air inlet nozzle 5 is a conical structure, and the end of the air inlet nozzle 5 away from the heat dissipation pipe 2 has a wide opening, and the end of the air inlet nozzle 5 connected to the air inlet terminal 4 has a narrow opening.

[0020] In this embodiment: During the driving of the vehicle, the air inlet end 4 faces the air inlet grid, and the flowing air moving relative to the vehicle hits the inner cavity of the end plate 1 head-on. The air flow that coincides with the air inlet nozzle 5 is introduced into the air inlet end 4, and then the flowing gas enters the heat dissipation tube 2. During the process of flowing through the heat dissipation tube 2, the flowing gas undergoes a heat exchange reaction with the heat generated by the battery discharge, thereby reducing the temperature inside the battery pack and achieving the cooling effect on the battery pack;

[0021] The air that has undergone heat exchange enters the air outlet end 3 through the heat dissipation tube 2 and is discharged from the air outlet end 3. The flowing air discharged from the air outlet end 3 is discharged in the opposite direction of the vehicle driving direction, preventing the heat-exchanged air from entering the heat dissipation tube 2 again through the air inlet nozzle 5.

[0022] Please refer specifically to Figure 1 、 Figure 2 and Figure 3 . The air outlet end 3 penetrates above the end plate 1, and the output port of the air outlet end 3 faces in the opposite direction to the wide opening of the air inlet nozzle 5.

[0023] In this embodiment: The air inlet direction and the air outlet direction are completely opposite, which can prevent the heat-exchanged air inlet gas from re-entering the inside of the heat dissipation tube 2. Moreover, the design of the inner wall conical surface of the air inlet nozzle 5, which is wide at the top and narrow at the bottom, can increase the air inlet speed, thereby further improving the heat dissipation efficiency.

[0024] Please refer specifically to Figure 1 . One end of the end plate 1 is of an open structure, and a filter screen for blocking and intercepting dust is installed at this opening. The frame of the filter screen is fixedly installed with the opening edge of the end plate 1 through a bolt assembly.

[0025] In this embodiment: Since there is a lot of dust on the road surface, during the driving of the vehicle, air disturbance is caused, and the disturbed air carries dust and flows. When the air passes through the filter screen, the filter screen intercepts the dust flowing with the air, preventing the dust from entering the heat dissipation tube 2 and causing dust accumulation at the bent part of the heat dissipation tube 2.

[0026] Please refer specifically to Figure 1 and Figure 2 . A round hole through which the air outlet end 3 penetrates is provided on the end plate 1.

[0027] In this embodiment: After the air outlet end 3 is inserted into the end plate 1 through the round hole, it is fixed by welding.

[0028] Please refer specifically to Figure 1 、 Figure 2 and Figure 3 . The bent parts of both the air outlet end 3 and the air inlet nozzle 5 are of an arc structure.

[0029] In this embodiment: This design is to avoid wind resistance during air movement.

[0030] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A heat dissipation device for a locomotive battery pack, comprising two groups of heat dissipation pipes (2) installed above and below the inner wall of the battery housing, characterized in that, The heat dissipation pipe (2) has a "U"-shaped structure, one port of the heat dissipation pipe (2) is an air inlet, and the other port of the heat dissipation pipe (2) is an air outlet. One end of the heat dissipation pipe (2) penetrates the outside of the end plate (1) of the battery housing, an air outlet terminal (3) having a "C"-shaped structure is welded to the air outlet end of the heat dissipation pipe (2), an air inlet terminal (4) having a "Z"-shaped structure is welded to the air inlet of the heat dissipation pipe (2), and an air inlet nozzle (5) is connected to the input end of the air inlet terminal (4); The inner wall of the air inlet nozzle (5) is in a conical structure, and the end of the air inlet nozzle (5) away from the heat dissipation pipe (2) is wide, and the end of the air inlet nozzle (5) that is connected to the air inlet end (4) is narrow.

2. The heat dissipation device for the power locomotive battery pack according to claim 1, wherein The air outlet end (3) penetrates to the top of the end plate (1), and the direction of the output port of the air outlet end (3) is opposite to the direction of the wide opening of the air inlet nozzle (5).

3. The heat dissipation device for the power locomotive battery pack according to claim 2, wherein One end of the end plate (1) is in an open structure, and a filter screen for blocking and intercepting dust is installed at the opening, and the frame of the filter screen and the opening edge of the end plate (1) are fixedly installed by a bolt assembly.

4. The heat dissipation device for the power locomotive battery pack according to claim 3, wherein The end plate (1) is provided with a circular hole for the air outlet end (3) to pass through.

5. The heat dissipation device for a locomotive battery pack according to claim 4, characterized in that, The bending parts of the air outlet end (3) and the air inlet nozzle (5) are both in an arc-shaped structure.

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