Integrated heat dissipation device for lithium-sodium battery pack

Abstract

The utility model provides an integrated heat dissipation device of a lithium-sodium battery pack, which relates to the field of battery management and is characterized in that a #-shaped bracket is arranged in a box body, an enclosure frame is arranged on the #-shaped bracket, a battery pack body is placed in the enclosure frame, a heat dissipation mechanism is arranged in the box body at the upper end of the #-shaped bracket, and a negative pressure cavity is arranged in the box body at the lower end of the #-shaped bracket; a negative pressure cavity is formed in the lower end of the battery pack body, a plurality of fans are arranged at the lower end of the negative pressure cavity, a bottom cover is detachably connected to the bottom end of the box body, a plurality of heat dissipation holes are distributed in the bottom cover, and foot pads are arranged at the lower end of the bottom cover. A plurality of electric fans are arranged below the negative pressure cavity, an air circulation channel is formed in the box body, negative pressure is formed in the negative pressure cavity by starting the electric fans and exhausting air to the heat dissipation holes of the bottom cover, the air circulation speed is increased, the heat dissipation effect on the battery pack body is improved, the overall structure is compact, and installation and maintenance are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery heat dissipation technical field, concretely relates to a lithium sodium battery pack integrated type heat dissipation device. BACKGROUND

[0002] With the rapid development of new energy technology, lithium sodium battery pack is widely used in electric vehicles, energy storage systems and other fields due to its high energy density and good charge-discharge performance. However, during the charge-discharge process of lithium sodium battery pack, a large amount of heat will be generated. If the heat cannot be dissipated in time and effectively, the temperature of the battery pack will continue to rise, resulting in performance degradation and shortening of the service life of the battery, and even safety problems such as thermal runaway may be caused.

[0003] The existing lithium sodium battery pack heat dissipation method has many shortcomings. For example, the air cooling heat dissipation method has low heat dissipation efficiency and cannot meet the heat dissipation demand of high-power-density battery pack. Although the liquid cooling heat dissipation method has high heat dissipation efficiency, it has complex structure, high cost and the risk of cooling liquid leakage. In addition, the traditional heat dissipation device has low integration with the battery pack and occupies large space, which is not conducive to the compact design of the battery pack. Therefore, it is necessary to design a high-efficiency, reliable and high-integration lithium sodium battery pack heat dissipation device. SUMMARY

[0004] (I) Technical problem solved

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a lithium sodium battery pack integrated type heat dissipation device to solve the problems of low heat dissipation efficiency, complex structure and low integration of the existing lithium sodium battery pack heat dissipation method.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a lithium sodium battery pack integrated type heat dissipation device applied to a battery pack body composed of a plurality of lithium sodium battery monomers arranged side by side, comprising a box body, a cross-shaped support is arranged in the box body, a surrounding frame is arranged in the middle of the cross-shaped support, the battery pack body is placed in the middle of the cross-shaped support and in the surrounding frame, a heat dissipation mechanism is arranged in the box body at the upper end of the cross-shaped support, a negative pressure cavity is arranged in the box body at the lower end of the cross-shaped support, a plurality of electric fans are arranged at the lower end of the negative pressure cavity, a bottom cover is detachably connected to the bottom end of the box body, a plurality of heat dissipation holes are arranged on the bottom cover, and a foot pad is arranged at the lower end of the bottom cover. When the electric fan is started, air passes through the heat dissipation mechanism of the box body, the negative pressure cavity and the heat dissipation holes of the bottom cover to be discharged, air circulation is strengthened, and the heat dissipation effect on the battery pack body is improved.

[0008] Preferably, the heat dissipation mechanism comprises a plurality of heat dissipation members arranged around the battery pack body, the heat dissipation member comprises a heat dissipation plate, and a plurality of fins are arranged on the heat dissipation plate and vertically arranged on the heat dissipation plate to form an air flow channel.

[0009] Preferably, the heat dissipation member is slidingly connected to the box, a bolt is connected to the heat dissipation plate, the bolt is slidingly connected to the box, a spring is sleeved on the bolt, and both ends of the spring are located on the heat dissipation plate and the box wall.

[0010] Preferably, the heat dissipation plate and the fins are made of high-thermal-conductivity material.

[0011] Preferably, a heat-conducting silica gel layer is arranged between the battery pack body and the heat dissipation plate.

[0012] Preferably, the electric fan is fixed in the box through an electric fan support.

[0013] Preferably, a plurality of electric fans are detachably arranged on the electric fan support.

[0014] (Three) beneficial effects

[0015] The utility model provides a lithium sodium battery pack integrated heat dissipation device. Has the following beneficial effects:

[0016] 1. The lithium sodium battery pack integrated heat dissipation device, by placing the battery pack body in the inside, the heat dissipation member is arranged around the battery pack body, the negative pressure cavity is formed at the lower end of the battery pack body, a plurality of electric fans are arranged below the negative pressure cavity, and the air flow channel is formed in the box. By starting the electric fan, the heat dissipation hole of the bottom cover is exhausted, the negative pressure is formed in the negative pressure cavity, the air flow speed is increased, the heat dissipation effect of the battery pack body is improved, and the overall structure is compact, convenient to install and maintain.

[0017] 2. The heat dissipation mechanism of the lithium sodium battery pack integrated heat dissipation device is a heat dissipation plate and a plurality of fins vertically arranged on the heat dissipation plate. In order to make the heat dissipation plate more closely combined with the surface of the battery pack body, the heat dissipation plate is slidingly connected to the box, the bolt is arranged in the middle of the heat dissipation plate, the bolt is arranged in the box wall, the spring is sleeved on the bolt, and the both ends of the spring are arranged on the heat dissipation plate and the box wall. The battery pack body is installed in the middle of the cross-shaped support in the box, and the heat dissipation plate is more closely combined with the surface of the battery pack body under the action of the spring force, high-efficiency heat dissipation of the lithium sodium battery pack is realized, and stable operation of the battery pack is ensured. ACCURACY

[0018] Figure 1 The utility model discloses a lithium sodium battery pack integrated heat dissipation device structure schematic Figure 1 ;

[0019] Figure 2The utility model discloses a lithium sodium battery pack integrated heat dissipation device structure schematic diagram Figure 2 ;

[0020] Figure 3 The utility model discloses a lithium sodium battery pack integrated heat dissipation device internal air circulation schematic diagram,

[0021] Figure 4 The utility model discloses a lithium sodium battery pack integrated heat dissipation device explosion schematic diagram.

[0022] In the drawing: 1, battery pack body; 2, box; 3, cross-shaped support; 4, enclosure; 5, negative pressure cavity; 6, electric fan; 7, bottom cover; 8, heat dissipation hole; 9, heat dissipation plate; 10, fin; 11, bolt; 12, spring; 13, electric fan support; 14, pad foot. DETAILED DESCRIPTION

[0023] The utility model discloses a lithium sodium battery pack integrated heat dissipation device, as Figures 1-4 As shown in the figure, be applied to battery pack body 1, the battery pack body 1 is by a plurality of lithium sodium battery monomer and side by side composition: including box 2, be provided with cross-shaped support 3 in the box 2, the cross-shaped support 3 middle is provided with enclosure 4, the battery pack body 1 is placed in the cross-shaped support 3 middle, in the enclosure 4, the cross-shaped support 3 upper end is provided with heat dissipation mechanism in the box 2, the cross-shaped support 3 lower end is provided with negative pressure cavity 5 in the box 2, the negative pressure cavity 5 lower end is provided with a plurality of electric fan 6, the bottom of the box 2 is detachably connected with bottom cover 7, the bottom cover 7 is distributed with a plurality of heat dissipation holes 8, the bottom cover 7 lower end is provided with pad foot 14, when the electric fan 6 starts, air is discharged from the heat dissipation mechanism of the box 2, through negative pressure cavity 5, from the heat dissipation hole 8 of bottom cover 7, strengthens air circulation, improves the heat dissipation effect of battery pack body 1.

[0024] By placing the battery pack body 1 in the inside, the battery pack body 1 is provided with heat dissipation pieces around, the battery pack body 1 lower end forms negative pressure cavity 5, a plurality of electric fan 6 is arranged below negative pressure cavity 5, and an air circulation channel is formed in the box 2. By starting the electric fan 6, the heat dissipation holes 8 of the bottom cover 7 are discharged, the negative pressure is formed in the negative pressure cavity 5, the air circulation speed is increased, the heat dissipation effect of the battery pack body 1 is improved, and the overall structure is compact, convenient to install and maintain

[0025] Specifically, as Figure 1 And Figure 3As shown, the heat dissipation mechanism includes a plurality of heat dissipation members arranged around the battery pack body 1, the heat dissipation members include a heat dissipation plate 9, a plurality of fins 10 are arranged on the heat dissipation plate 9, the plurality of fins 10 are vertically arranged on the heat dissipation plate 9 to form an air flow channel, the heat dissipation plate 9 of the heat dissipation channel formed by the plurality of fins 10 is arranged on the four sides of the battery pack body 1, and the external air flows from top to bottom, which can efficiently take away the heat generated by the battery pack, and the heat dissipation efficiency is high.

[0026] As shown in Figure 1 and Figure 3 The heat dissipation member is slidingly connected to the box body 2, the heat dissipation plate 9 is connected with a bolt 11, the bolt 11 is slidingly connected to the box body 2, the bolt 11 is sleeved with a spring 12, and the both ends of the spring 12 are located on the heat dissipation plate 9 and the wall of the box body 2. Under the action of the elasticity of the spring 12, the heat dissipation plate 9 is more closely attached to the surface of the battery pack body 1, which realizes efficient heat dissipation of the lithium-sodium battery pack and guarantees stable operation of the battery pack

[0027] Preferably, the heat dissipation plate 9 and the fin 10 are made of high-thermal-conductivity material, such as aluminum alloy.

[0028] Preferably, a heat-conducting silica gel layer is arranged between the battery pack body 1 and the heat dissipation plate 9. The heat-conducting silica gel layer arranged between the battery pack body 1 and the heat dissipation plate 9 enhances heat conduction and makes heat dissipation more uniform

[0029] Preferably, the electric fan 6 is fixed in the box body 2 through an electric fan support 13.

[0030] Preferably, a plurality of electric fans 6 are detachably arranged on the electric fan support 13.

[0031] In addition, a temperature sensor is arranged in the battery pack body 1, which is used for real-time monitoring of the temperature of the battery pack and transmitting the temperature signal to an external control system, and the control system controls the working state of the fan according to the temperature signal. The cooperation of the temperature sensor and the control system can adjust the working state of the fan according to the actual temperature of the battery pack in real time, realize intelligent heat dissipation control, and improve the safety and stability of the battery pack. At the same time, the heat dissipation device has high integration with the battery pack, compact structure, and small space occupation, which is beneficial to the miniaturization and lightweight design of the battery pack, and adds a layer of protection to the outside of the battery pack.

[0032] Working principle: first, a plurality of lithium sodium battery monomer according to the design requirements and side by side into the battery pack body 1, the case is directly for battery pack body 1, the four side surface of battery pack body 1 evenly daub heat-conducting silicone layer, the battery pack body 1 is placed in the frame 4 fixed in the middle of the well-shaped support 3, the heat dissipation plate 9 made of high thermal conductivity material (such as copper or aluminum alloy) is attached to the heat-conducting silicone layer, a plurality of electric fans 6 are installed on the fan bracket 13 in the box 2 through screws, the power cord of electric fan 6 is connected with the battery or external power supply through internal connection, then the bottom cover 7 is screw connected at the bottom of the box 2, the installation of the device is completed, when the lithium sodium battery pack works, the battery pack body 1 will generate heat, the heat is transmitted to the heat dissipation plate 9 and fin 10 through the heat-conducting silicone layer, at this time, the electric fan 6 is started, as shown in Figure 3 The external air is exhausted to the heat dissipation hole 8 of the bottom cover 7, the negative pressure is formed in the negative pressure cavity 5, the air flow speed is increased, in this way, the efficient and intelligent heat dissipation of the lithium sodium battery pack is realized.

[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium-sodium battery pack integrated heat dissipation device applied to a battery pack body (1) composed of a plurality of lithium-sodium battery cells arranged side by side, characterized in that: The application relates to a battery pack body cooling device, which comprises a box (2), a cross-shaped support (3) arranged in the box (2), a surrounding frame (4) arranged in the middle of the cross-shaped support (3), a battery pack body (1) arranged in the middle of the cross-shaped support (3) and in the surrounding frame (4), a cooling mechanism arranged in the box (2) at the upper end of the cross-shaped support (3), a negative pressure cavity (5) arranged in the box (2) at the lower end of the cross-shaped support (3), a plurality of electric fans (6) arranged at the lower end of the negative pressure cavity (5), a bottom cover (7) detachably connected to the bottom end of the box (2), a plurality of heat dissipation holes (8) arranged on the bottom cover (7), and a foot pad (14) arranged at the lower end of the bottom cover (7). When the electric fans (6) are started, air is discharged from the heat dissipation holes (8) of the bottom cover (7) through the negative pressure cavity (5) from the cooling mechanism of the box (2), so that air circulation is strengthened, and the heat dissipation effect on the battery pack body (1) is improved.

2. The integrated heat sink for lithium-sodium battery packs of claim 1, wherein: The cooling mechanism comprises a plurality of cooling pieces arranged around the battery pack body (1), wherein the cooling pieces comprise a cooling plate (9), a plurality of fins (10) are arranged on the cooling plate (9), and the plurality of fins (10) are vertically arranged on the cooling plate (9) to form an air circulation channel.

3. The integrated heat sink for a lithium-sodium battery pack of claim 2, wherein: The cooling pieces are slidingly connected to the box (2), the cooling plate (9) is connected with a bolt (11), the bolt (11) is slidingly connected to the box (2), a spring (12) is sleeved on the bolt (11), and the two ends of the spring (12) are arranged on the cooling plate (9) and the wall of the box (2).

4. The integrated heat sink for lithium-sodium battery packs of claim 2, wherein: The cooling plate (9) and the fins (10) are made of high-thermal-conductivity material.

5. The integrated heat sink for a lithium-sodium battery pack of claim 2, wherein: A thermal conductive silica gel layer is arranged between the battery pack body (1) and the cooling plate (9).

6. The integrated heat sink for lithium-sodium battery packs of claim 1, wherein: The electric fans (6) are fixed in the box (2) through an electric fan support (13).

7. The integrated heat sink for a lithium-sodium battery pack of claim 6, wherein: A plurality of electric fans (6) are detachably arranged on the electric fan support (13).

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