Lithium battery heat dissipation structure for electric vehicle

Abstract

The lithium battery heat dissipation structure comprises a vehicle frame and a pedal cover, a battery bin is arranged on the vehicle frame, the front side of the lower portion of the battery bin protrudes outwards to form a transverse long-strip-shaped air inlet part, the rear side of the lower portion of the battery bin protrudes outwards to form a transverse long-strip-shaped air outlet part, and the pedal cover is arranged on the front side of the battery bin. During driving, outside air is blown in from the air inlet part and is blown out from the air outlet part with heat generated by the battery so as to reduce the temperature of the battery bin, the air inlet part is low in height and protrudes outwards so that water splashed in rainy days can be prevented from entering the battery bin, and the cooling fan is arranged on the left side or the right side of the battery bin so that the cooling effect can be improved. During charging, heat dissipation can be carried out through the heat dissipation fan, the temperature in the battery bin during charging is reduced, the temperature is prevented from being too high, the battery partition plates are arranged at the bottom of the battery bin and the inner side of the pedal cover, the adjacent batteries are separated through the battery partition plates, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicles, in particular to a lithium battery heat dissipation structure used in electric vehicles. Background Art

[0002] When riding an electric vehicle, it is powered by lithium batteries. Lithium batteries generate heat when working or charging. If the battery temperature is too high, the battery diaphragm may be damaged, which may lead to battery explosion and combustion. In addition, the batteries in the battery packs of electric vehicles are usually close to each other, and the heat dissipation effect is poor. A heat dissipation structure is needed to reduce the temperature of the electric vehicle lithium battery when working or charging. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a lithium battery heat dissipation structure for electric vehicles.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: A lithium battery heat dissipation structure for an electric vehicle, comprising a frame and a pedal cover, wherein a battery compartment is arranged on the frame, the lower front side of the battery compartment protrudes outwardly to form a transversely long strip of air inlet, the lower rear side of the battery compartment protrudes outwardly to form a transversely long strip of air outlet, a cooling fan is arranged on the left or right side of the battery compartment, and a battery separator is arranged at the bottom of the battery compartment and the inner side of the pedal cover.

[0005] Furthermore, the lower sides of the air inlet and the air outlet are inclined from inside to outside to form a drainage portion, and the outer side of the drainage portion is thinner than the inner side.

[0006] Furthermore, a rubber layer is provided on the surface of the battery separator and the inner side of the battery compartment.

[0007] Furthermore, the partition plate on the pedal cover is provided with a plurality of wire grooves.

[0008] Furthermore, the heat dissipation fan is installed on the heat dissipation port, a plurality of shielding plates are installed on the front side of the heat dissipation port, shaft holes are arranged on both sides of the heat dissipation port, and rotating shafts are arranged on both sides of the shielding plates and placed in the shaft holes.

[0009] Furthermore, a pair of filter plate slots are symmetrically arranged on the battery compartment on the inner side of the air inlet portion, the filter plate slots are open on both sides, and filter plates covered with holes are inserted into the filter plate slots.

[0010] The beneficial effects of the utility model are as follows: by setting a partition plate, there is a gap between adjacent lithium batteries, which is convenient for air flow to take away the heat between the lithium batteries, and a rubber layer is provided on the surface of the battery partition plate and the inner side of the battery compartment, which can increase the stability of the lithium battery after installation, and can also make a gap between the lithium battery and the inner side of the battery compartment, which is convenient for air flow in the battery compartment; an air inlet is provided at the front of the battery compartment, and during riding, outside air can be blown in from the air inlet and blown out from the air outlet, and the outwardly protruding long strip-shaped air inlet has a low height and a large width, which can prevent water splashing during riding from entering the battery compartment, and also has a good air intake; when charging, the cooling fan can be turned on to exchange the air in the battery compartment with the outside air, take away the heat generated during charging, and avoid the battery temperature being too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall schematic diagram of the utility model.

[0012] Figure 2 It is a cross-sectional view of the utility model.

[0013] Figure 3 This is a schematic diagram of the internal structure of the battery compartment.

[0014] Figure 4 for Figure 3 Schematic diagram of part A in .

[0015] Figure 5 Schematic diagram of the pedal cover.

[0016] In the figure: 1. frame; 11. battery compartment; 2. pedal cover; 21. wire trough; 3. air inlet; 4. air outlet; 5. battery separator; 6. drainage; 7. cooling fan; 71. shielding plate; 8. filter plate; 81. filter plate slot; 9. rubber layer. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings: a lithium battery heat dissipation structure for electric vehicles.

[0018] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: A lithium battery heat dissipation structure for an electric vehicle, comprising a frame 1 and a pedal cover 2, a battery compartment 11 is arranged on the frame 1, a lower front side of the battery compartment 11 protrudes outward to form a transverse long strip of air inlet 3, a lower rear side of the battery compartment 11 protrudes outward to form a transverse long strip of air outlet 4, when driving, outside air is blown in by the air inlet 3, and blown out from the air outlet 4 with the heat generated by the battery to reduce the temperature in the battery compartment 11, the air inlet 3 is relatively low in height and protrudes outward, which can prevent water splashed in rainy days from entering the battery compartment 11, a cooling fan 7 is arranged on the left or right side of the battery compartment 11, and the cooling fan 7 can be used for heat dissipation during charging to reduce the temperature in the battery compartment 11 during charging and avoid excessive temperature, a battery separator 5 is arranged at the bottom of the battery compartment 11 and the inner side of the pedal cover 2, the battery separator 5 separates adjacent batteries to prevent the batteries from being close to each other, facilitates air flow between the batteries, and increases the heat dissipation effect.

[0019] Furthermore, the lower sides of the air inlet 3 and the air outlet 4 are inclined from inside to outside to form a drainage portion 31. The outer side of the drainage portion 31 is thinner than the inner side. When rainwater splashes into the air inlet 3, it will flow out along the drainage portion 31 to prevent rainwater from flowing into the battery compartment 11.

[0020] Furthermore, a rubber layer 9 is provided on the side of the battery separator 5 that contacts the battery and on the inner side of the battery compartment 11. The rubber layer 9 can clamp the battery to increase the stability of the battery after installation, and the rubber layer on the inner side of the battery compartment 11 can create a gap between the battery and the inner side of the battery compartment 11, thereby facilitating air flow in the battery compartment 11.

[0021] Furthermore, the partition plate on the pedal cover 2 is provided with a plurality of wire grooves 21 for routing wires between the lithium batteries.

[0022] Furthermore, the cooling fan 7 is installed on the cooling port, and a plurality of shielding plates 71 are installed on the front side of the cooling port. Axial holes are provided on both sides of the cooling port, and rotating shafts are provided on both sides of the shielding plates 71 and inserted into the axle holes. When the cooling fan is not turned on, the shielding plates 71 close and protect the cooling fan 7, and when the cooling fan 7 is turned on, the shielding plates 71 are blown open.

[0023] Furthermore, a pair of filter plate grooves 81 are symmetrically arranged on the battery compartment 11 on the inner side of the air inlet 3. The filter plate grooves 81 are open on both sides. A filter plate 8 covered with holes is inserted into the filter plate grooves 81. The filter plate 8 can block solid impurities that accidentally enter the air inlet 3 and prevent them from falling into the battery compartment 11 and damaging the battery.

[0024] 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 lithium battery heat dissipation structure for an electric vehicle, comprising a frame and a pedal cover, wherein a battery compartment is provided on the frame, characterized in that The lower front side of the battery compartment protrudes outward to form a transversely long strip of air inlet, and the lower rear side of the battery compartment protrudes outward to form a transversely long strip of air outlet. A cooling fan is arranged on the left or right side of the battery compartment, and a battery partition is arranged at the bottom of the battery compartment and the inner side of the pedal cover.

2. A lithium battery heat dissipation structure for electric vehicles according to claim 1, characterized in that The lower sides of the air inlet and the air outlet are inclined from inside to outside to form a drainage portion, and the outer side of the drainage portion is thinner than the inner side.

3. A lithium battery heat dissipation structure for electric vehicles according to claim 1, characterized in that A rubber layer is arranged on the surface of the battery separator and the inner side of the battery compartment.

4. A lithium battery heat dissipation structure for electric vehicles according to claim 2, characterized in that The partition plate on the pedal cover is provided with a plurality of wire grooves.

5. A lithium battery heat dissipation structure for electric vehicles according to claim 1, characterized in that The heat dissipation fan is installed on the heat dissipation port, a plurality of shielding plates are installed on the front side of the heat dissipation port, shaft holes are arranged on both sides of the heat dissipation port, and rotating shafts are arranged on both sides of the shielding plates and placed in the shaft holes.

6. A lithium battery heat dissipation structure for electric vehicles according to claim 1, characterized in that A pair of filter plate slots are symmetrically arranged on the battery compartment at the inner side of the air inlet portion. The filter plate slots are open on both sides, and filter plates covered with holes are inserted into the filter plate slots.

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