New energy vehicle battery cover plate

Abstract

The utility model provides a new energy vehicle battery cover plate which comprises a battery box and a battery cover plate body, the battery cover plate body is arranged on the upper surface of the battery box, fastening bolts are arranged at the four corners of the battery cover plate body, the battery cover plate body is fixedly connected with the battery box through the fastening bolts, a containing box is arranged at the lower end of the battery cover plate body, and the containing box is fixedly connected with the battery box. The placement box is fixed on the lower surface of the battery cover plate, the interior of the placement box is hollow, a plurality of heat dissipation holes are formed in the bottom of the placement box, and a fan is arranged in the placement box; a service port is formed in the upper surface of the battery cover plate, a filter screen is arranged at the upper end of the service port, the fan and the coil pipe are arranged on the back face of the battery cover plate, when the battery cover plate is used for a long time, the fan rotates circularly to cool a battery, danger caused by high temperature of the battery is effectively prevented, and stable operation of the battery is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle accessories, in particular to a battery cover plate for a new energy vehicle. Background Art

[0002] With the increasingly serious energy crisis and environmental pollution problems, new energy vehicles are more and more favored by various countries due to their great advantages in energy conservation and emission reduction. Electric vehicles are currently the main body of new energy vehicles, and power batteries are the most important power sources for electric vehicles. Lithium-ion batteries have gradually become the mainstream of power batteries for electric vehicles due to their characteristics such as high specific energy and long cycle life.

[0003] The existing Chinese patent document CN201920823435.4 discloses a battery cover plate, a battery and an electric vehicle. The battery cover plate includes a cover plate body and a liquid injection hole provided on the cover plate body. A sealing unit for sealing the liquid injection hole is provided below the cover plate body; when the pressure received by the sealing unit is less than a preset pressure, the liquid injection hole is closed; when the pressure received by the sealing unit is greater than the preset pressure, the liquid injection hole is opened to communicate the liquid injection hole with the battery inner cavity. The above solution provided by this application makes the exhaust and liquid replenishment operations achievable and easy to operate. By exhausting, the expansion and deformation of the battery shell caused by internal gas production can be slowed down, and by replenishing the liquid, the consumed electrolyte can be replenished in time to extend the service life of the battery.

[0004] However, there are certain defects in the use of the above patent. The safety problem of thermal runaway of the battery for new energy vehicles has always been a difficult point. If one of the battery modules induces thermal runaway, it will spread rapidly in the entire battery system and finally form an accident.

[0005] Therefore, a battery cover plate for a new energy vehicle is proposed here to solve the above problems. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a battery cover plate for a new energy vehicle.

[0007] The utility model is realized by adopting the following technical scheme:

[0008] A battery cover plate for a new energy vehicle includes a battery box and a battery cover plate. The battery cover plate is arranged on the upper surface of the battery box. Fastening bolts are provided at four corners of the battery cover plate. The battery cover plate is fixedly connected to the battery box through the fastening bolts. A placement box is provided at the lower end of the battery cover plate. The placement box is fixed on the lower surface of the battery cover plate. The interior of the placement box is hollow. A plurality of heat dissipation holes are provided at the bottom of the placement box. A fan is provided inside the placement box;

[0009] An inspection opening is provided on the upper surface of the battery cover plate, and a filter screen is provided at the upper end of the inspection opening.

[0010] The interior of the placement box is provided with a coiled pipe, the coiled pipe is fixed at the inner bottom end of the placement box, the fan is located above the coiled pipe, the coiled pipe is connected end to end, and the head end and the tail end of the coiled pipe extend outside the battery box and are connected to an external water tank in communication.

[0011] The outer peripheral wall of the lower end of the battery box is provided with a ventilation grille, and the ventilation grille is in communication with the interior of the battery box.

[0012] The interior of the battery box is provided with a plurality of partitions, and the partitions divide the interior of the battery box into a plurality of regions.

[0013] The interior of the battery box is provided with a placement plate, the placement plate is fixed on the inner wall of the battery box, the placement plate is provided with a plurality of ventilation holes, the ventilation holes are evenly and equidistantly distributed throughout the placement plate, there is a gap between the placement plate and the bottom of the battery box, and the partitions are placed on the upper surface of the placement plate.

[0014] The utility model has the following beneficial effects compared with the prior art:

[0015] 1. By arranging a fan and a coiled pipe on the back of the battery cover plate, when in long-term use, the fan rotates and the coiled pipe connected to the external water tank starts to work. The cooling water in the external water tank circulates in the coiled pipe through a water pump. At this time, the fan blows external air into the battery box, the air contacts the coiled pipe for cooling, the cooled air enters the interior to cool the battery, and then blows out from the ventilation grille at the bottom of the battery box. This process is repeated to cool the battery, effectively preventing the danger caused by high temperature to the battery and ensuring the stable operation of the battery. Description of the Drawings

[0016] Figure 1 is the overall three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 is the exploded three-dimensional structure schematic diagram of the utility model;

[0018] Figure 3 is the three-dimensional structure schematic diagram of the battery box of the utility model;

[0019] Figure 4 is the exploded three-dimensional structure schematic diagram of the battery box of the utility model;

[0020] Figure 5 is the three-dimensional structure schematic diagram of the battery cover plate of the utility model;

[0021] Figure 6 is the exploded three-dimensional structure schematic diagram of the battery cover plate of the utility model;

[0022] In the figure: 1. Battery box; 11. Ventilation grille; 2. Battery cover plate; 21. Filter screen; 22. Fastening stud; 23. Inspection opening; 3. Placing plate; 31. Ventilation holes; 4. Partition board; 5. Placing box; 51. Heat dissipation holes; 6. Coiled pipe; 7. Fan. Detailed implementation manner

[0023] Next, in combination with the accompanying drawings and the detailed implementation manner, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0024] The present utility model will be further described below in conjunction with the accompanying drawings.

[0025] As Figures 1 to 6 shown, a battery cover plate 2 for a new energy vehicle includes a battery box 1 and a battery cover plate 2. The battery cover plate 2 is arranged on the upper surface of the battery box 1. Four corners of the battery cover plate 2 are provided with fastening bolts. The battery cover plate 2 is fixedly connected to the battery box 1 through the fastening bolts. A placing box 5 is arranged at the lower end of the battery cover plate 2. The placing box 5 is fixed on the lower surface of the battery cover plate 2. The interior of the placing box 5 is hollow. A plurality of heat dissipation holes 51 are provided at the bottom of the placing box 5. A fan 7 is arranged inside the placing box 5;

[0026] An inspection opening 23 is arranged on the upper surface of the battery cover plate 2. A filter screen 21 is arranged at the upper end of the inspection opening 23. The filter screen 21 at the upper end of the inspection opening 23 effectively prevents external impurities from entering the interior of the battery box 1 and prevents dust from affecting the battery. Moreover, the filter screen 21 is connected to the battery cover plate 2 by screws, which is convenient for disassembly and cleaning.

[0027] A coiled pipe 6 is arranged inside the placing box 5. The coiled pipe 6 is fixed at the bottom end inside the placing box 5. The fan 7 is located above the coiled pipe 6. The coiled pipe 6 is connected end to end. The head end and the tail end of the coiled pipe 6 extend outside the battery box 1 and are connected to an external water tank.

[0028] A ventilation grille 11 is arranged on the outer peripheral wall at the lower end of the battery box 1. The ventilation grille is connected to the interior of the battery box 1. A filter screen 21 is also arranged on the back of the ventilation grille 11 to prevent external dust and other impurities from entering the interior of the battery box 1.

[0029] A plurality of partition boards 4 are arranged inside the battery box 1. The partition boards 4 divide the interior of the battery box 1 into multiple areas. The partition boards 4 are made of heat-insulating and fire-proof materials. The partition boards 4 divide the interior of the battery box 1 into multiple areas. Each battery is in a different area, effectively preventing the influence on the remaining batteries when a single battery has problems due to high temperature.

[0030] Inside the battery box 1, there is a placement board 3 which is fixed on the inner wall of the battery box 1. The placement board 3 is provided with a plurality of ventilation holes 31. The ventilation holes 31 are evenly and equidistantly distributed throughout the placement board 3. There is a gap between the placement board 3 and the bottom of the battery box 1. The partition 4 is placed on the upper surface of the placement board 3. The gap between the placement board 3 and the battery box 1 is for the air inside the battery box 1 to circulate when the fan 7 rotates, ensuring the heat dissipation effect.

[0031] The working principle of the present utility model is as follows: During use, the battery is placed inside the battery box 1 and on the placement board 3. During daily use, the fan 7 is started. The fan 7 drives the internal air flow to absorb the heat inside the battery box 1 and discharges it to the outside of the battery box 1 through the inspection opening 23, ensuring that the temperature inside the battery box 1 does not become too high and cooling the battery.

[0032] After long-term use, the fan 7 rotates in the reverse direction, and at the same time, the coil pipe 6 connected to the external water tank starts to work. The cooling water inside the external water tank circulates through the coil pipe 6 by means of a water pump. At this time, the fan 7 blows the external air into the battery box 1. The air contacts the coil pipe 6 for cooling, and the cooled air enters the interior to cool the battery, and then blows out from the ventilation grille 11 at the bottom of the battery box 1. This process is repeated to cool the battery, effectively preventing the danger caused by high temperature to the battery and ensuring the stable operation of the battery.

[0033] The above embodiments are only the preferred embodiments of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A battery cover for a new energy vehicle, comprising a battery box (1) and a battery cover (2), wherein the battery cover (2) is arranged on the upper surface of the battery box (1), and fastening bolts are arranged at four corners of the battery cover (2), and the battery cover (2) is fixedly connected to the battery box (1) by the fastening bolts, characterized in that: A placement box (5) is provided at the lower end of the battery cover (2), the placement box (5) is fixed on the lower surface of the battery cover (2), the interior of the placement box (5) is hollow, a plurality of heat dissipation holes (51) are provided at the bottom of the placement box (5), and a fan (7) is provided inside the placement box (5); The upper surface of the battery cover plate (2) is provided with an inspection opening (23), and the upper end of the inspection opening (23) is provided with a filter screen (21).

2. A new energy vehicle battery cover according to claim 1, characterized in that: A coil (6) is provided inside the placement box (5), the coil (6) is fixed at the bottom end of the placement box (5), the fan (7) is located at the upper end of the coil (6), the coil (6) is connected end to end, and the head end and the tail end of the coil (6) extend outside the battery box (1) and are connected to an external water tank.

3. A new energy vehicle battery cover according to claim 2, characterized in that: An air-permeable grille (11) is provided on the outer peripheral wall of the lower end of the battery box (1), and the air-permeable grille is connected to the interior of the battery box (1).

4. A new energy vehicle battery cover according to claim 3, characterized in that: A plurality of partitions (4) are arranged inside the battery box (1), and the partitions (4) divide the interior of the battery box (1) into a plurality of areas.

5. A new energy vehicle battery cover according to claim 4, characterized in that: A placement plate (3) is provided inside the battery box (1), the placement plate (3) is fixed on the inner wall of the battery box (1), a plurality of air holes (31) are provided on the placement plate (3), the air holes (31) are evenly and equidistantly filled throughout the placement plate (3), a gap is left between the placement plate (3) and the bottom of the battery box (1), and the partition plate (4) is placed on the upper surface of the placement plate (3).

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