An efficient heat dissipation and ventilation device for a new energy vehicle battery pack

Abstract

The present invention relates to the technical field of new energy vehicle battery, and particularly to an efficient heat dissipation and ventilation device for a new energy vehicle battery pack, comprising: a housing and a battery pack. A baffle is movably connected to the front surface of the housing. A cavity is formed inside the housing. A heat dissipation fan is fixedly connected to the bottom of the inner cavity of the housing. A number of equally spaced ventilation holes are formed in the bottom of the inner cavity of the housing. An air outlet hole is formed in the top of the housing. During the actual use of the present invention, when the battery pack starts to operate and generates heat, first, the heat generated by the battery pack is transferred by the heat dissipation device to cool the battery pack and keep the temperature of the battery pack components normal. Then, the heat is dissipated into the air through the ventilation structure to reduce the temperature inside the housing, maintain the air circulation inside the housing, keep the temperature inside the housing constant, and at the same time provide a relatively dry and clean use environment.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and specifically to an efficient heat dissipation and ventilation device for a new energy vehicle battery pack. Background Art

[0002] A power battery is a power source that provides power for tools, mostly referring to a storage battery that provides power for electric vehicles, electric trains, electric bicycles, and golf carts. An electric vehicle battery pack is composed of multiple batteries connected in series and stacked. Currently, the batteries of electric vehicles are generally installed on the chassis in the middle of the four wheels. Since the batteries work for a long time and need to be charged repeatedly, they are extremely prone to heat generation. Thus, the heat dissipation of the batteries becomes particularly important.

[0003] For example, a new energy vehicle battery pack ventilation and heat dissipation device disclosed in the publication number CN112582705A has the beneficial effect of combining liquid cooling and ventilation cooling, and using the flow of coolant to cool the air guiding component. Compared with traditional liquid cooling, it not only has a simple structure, is easy to disassemble, install and maintain, but also effectively saves space.

[0004] However, the cooperation between the various mechanisms in the above patent is to cool the air guiding component, and then use the air guiding component to dissipate heat from the battery module base, rather than directly dissipating heat from the battery module base. Although the structure is simple, by cooling the air guiding component, not all the energy can be directed at the air guiding component, and it is easy for a part of the cooling energy to be lost. Moreover, the battery pack has a large volume and needs to operate at high speed, so the requirement for its heat dissipation is relatively high. Ordinary air guiding components cannot effectively dissipate heat from the battery pack in all directions, thus unable to ensure the air circulation, and further resulting in an insufficiently significant heat dissipation effect.

[0005] Therefore, to solve the above problems, an efficient heat dissipation and ventilation device for a new energy vehicle battery pack is urgently needed to be developed. Summary of the Invention

[0006] The purpose of the present invention is to provide an efficient heat dissipation and ventilation device for a new energy vehicle battery pack, which has the advantages of efficient heat dissipation and ventilation, and solves the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: An efficient heat dissipation and ventilation device for a new energy vehicle battery pack, comprising: a housing and a battery pack. One side of the housing is connected with a baffle. A cavity is opened inside the housing. A heat dissipation fan is fixedly connected to the bottom of the inner cavity of the cavity. A plurality of ventilation holes are opened at equal intervals at the bottom of the inner cavity of the housing. An air outlet hole is opened at the top of the housing.

[0008] A heat dissipation plate one is fixedly connected to the bottom of the inner cavity of the housing. A heat dissipation pipe is fixedly connected to the top of the heat dissipation plate one. A heat dissipation plate two is fixedly connected above the surface of the heat dissipation pipe. Convex peaks are provided on the surface of the heat dissipation plate two, and a strip-shaped groove is formed between two convex peaks. A thermal grease layer is fixedly connected to the top of the heat dissipation plate two. A refrigeration sheet is fixedly connected to the top of the thermal grease layer. The battery pack is located above the refrigeration sheet and is fixedly connected to the refrigeration sheet. A connection block is fixedly connected to the right side of the top of the housing. A placement groove is opened at the bottom of the connection block. A cooling box is fixedly connected to the top of the inner cavity of the placement groove. An oil pump is fixedly connected to the right side of the top of the inner cavity of the housing. The oil inlet end of the oil pump penetrates into the inner cavity of the placement groove and is communicated with the cooling box. The oil outlet end of the oil pump is communicated with a conduit one. One end of the conduit one away from the oil pump is communicated with a conduit two. One end of the conduit two away from the conduit one is communicated with the heat dissipation pipe.

[0009] Further, as a preferred embodiment of the present invention, cushion blocks are fixedly connected to the four corners of the bottom of the housing, and the height of the cushion blocks is 2-10 cm.

[0010] Further, as a preferred embodiment of the present invention, the battery packs are arranged in an array, and a thermal conductive silica gel sheet is fixedly connected to the opposite side of two battery packs, and arc surfaces are provided at the four corners of the thermal conductive silica gel sheet.

[0011] Further, as a preferred embodiment of the present invention, threaded holes are opened at the four corners of the front surface of the baffle, bolts are threadedly connected to the inner cavities of the threaded holes, and the baffle is threadedly connected to the housing through the bolts.

[0012] Further, as a preferred embodiment of the present invention, a filter screen one is fixedly connected to the top of the inner cavity of the air outlet hole.

[0013] Further, as a preferred embodiment of the present invention, guide grooves are opened above both sides of the inner cavity of the placement groove, guide strips are slidably connected to the inner cavities of the guide grooves, a sealing plate is fixedly connected to the opposite sides of two guide strips, and both the guide grooves and the guide strips are T-shaped.

[0014] Further, as a preferred embodiment of the present invention, heat dissipation holes are opened at the top of the sealing plate, and filter screens two are filled in the inner cavities of the heat dissipation holes.

[0015] Further, as a preferred embodiment of the present invention, the vertical section of the placement groove is concave, and a notch is opened at the center of the bottom of the inner cavity of the placement groove.

[0016] Further, as a preferred embodiment of the present invention, inclined surfaces are opened at the front side and the rear side of the top of the housing.

[0017] Further, as a preferred embodiment of the present invention, a fixing frame is fixedly connected to the bottom of the oil pump, and the top of the fixing frame is fixedly connected to the housing.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] By the combined use of the cavity, the cooling fan, the ventilation holes and the air outlet holes, the present invention enhances the air circulation between the housing and the outside world, timely dissipates the heat generated during the operation of the battery pack, drives the heat in the housing to flow into the air faster, and improves the heat transfer efficiency. By the combined use of the first heat dissipation plate, the heat dissipation pipe, the second heat dissipation plate, the thermal conductive silicone grease layer, the refrigeration sheet, the connecting block, the placement groove, the cooling box, the oil pump, the first conduit and the second conduit, the connection gap between adjacent battery packs is filled, so that the heat conduction is more rapid, the heat generated during operation is absorbed, the temperature of the operating environment of the battery pack is reduced, a relatively constant temperature range is maintained, and the battery pack is further protected to reduce losses. This enables the new energy vehicle battery pack to have the advantages of efficient heat dissipation and ventilation. During actual use, when the battery pack starts to operate and generate heat, first, the heat generated by the battery pack is transferred by the heat dissipation device to cool the battery pack and keep the temperature of the battery pack components normal. Then, the heat is dissipated into the air through the ventilation structure to reduce the temperature inside the housing, maintain the air circulation inside the housing, keep the temperature inside the housing constant, and at the same time provide a relatively dry and clean use environment, further reducing the influence of the heat source on the battery pack, enabling the battery pack to have a better operating and placement environment, and keeping the battery pack in a relatively stable operating state. This solves the problems that the existing heat dissipation device of the automotive battery pack cannot achieve good heat dissipation function during use, the heat dissipation effect is not significant enough, it is easy to damage the internal components of the battery pack, and at the same time, the lack of the combined use of the ventilation device further reduces the heat dissipation effect, resulting in a reduction in the safety factor and affecting the stability of the battery pack during use.

[0020] It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be regarded as part of the inventive subject matter of the present disclosure as long as such concepts do not conflict with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 is a three-dimensional structural schematic diagram of the split state of the housing and the baffle of the present invention;

[0024] Figure 3 Schematic three-dimensional structure diagram of the split state of the local structure of the present invention;

[0025] Figure 4 For the present invention Figure 3 Partial enlarged view of A in;

[0026] Figure 5 Schematic three-dimensional right view structure diagram of the housing and the baffle of the present invention;

[0027] Figure 6 Schematic three-dimensional structure diagram of the ventilation hole of the present invention;

[0028] Figure 7 Schematic three-dimensional structure diagram of the split state of the connection block and the sealing plate of the present invention;

[0029] Figure 8 Schematic three-dimensional structure diagram of the heat dissipation fan of the present invention.

[0030] In the figure, the meanings of the respective reference numerals are as follows: 1, housing; 2, battery pack; 3, baffle; 4, cavity; 5, heat dissipation fan; 6, ventilation hole; 7, air outlet hole; 8, first heat dissipation plate; 9, heat dissipation pipe; 10, second heat dissipation plate; 11, thermal grease layer; 12, refrigeration chip; 13, connection block; 14, placement groove; 15, cooling box; 16, oil pump; 17, first conduit; 18, second conduit; 19, inclined surface; 20, cushion block; 21, thermal silica gel sheet; 22, threaded hole; 23, bolt; 24, first filter screen; 25, heat dissipation hole; 26, guide groove; 27, fixing bracket; 28, guide strip; 29, sealing plate. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. For a better understanding of the technical content of the present invention, specific embodiments are specifically cited and described in conjunction with the accompanying drawings as follows. In the present disclosure, aspects of the present invention are described with reference to the accompanying drawings, and many illustrative embodiments are shown in the drawings. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] As shown in the attached Figure 1 to the attached Figure 8As shown in the figure: This embodiment provides an efficient heat dissipation and ventilation device for a new energy vehicle battery pack, including: a housing 1 and a battery pack 2. One side of the housing 1 is connected with a baffle 3. A cavity 4 is opened inside the housing 1. A heat dissipation fan 5 is fixedly connected to the bottom of the inner cavity of the cavity 4. A number of ventilation holes 6 are equally spaced and opened at the bottom of the inner cavity of the housing 1. An air outlet hole 7 is opened at the top of the housing 1.

[0033] A heat dissipation plate one 8 is fixedly connected to the bottom of the inner cavity of the housing 1. A heat dissipation pipe 9 is fixedly connected to the top of the heat dissipation plate one 8. A heat dissipation plate two 10 is fixedly connected above the surface of the heat dissipation pipe 9. The surface of the heat dissipation plate two 10 is provided with convex peaks, and a strip-shaped groove is formed between two convex peaks. A heat conductive silicone grease layer 11 is fixedly connected to the top of the heat dissipation plate two 10. A refrigeration sheet 12 is fixedly connected to the top of the heat conductive silicone grease layer 11. The battery pack 2 is located above the refrigeration sheet 12 and fixedly connected to the refrigeration sheet 12. A connection block 13 is fixedly connected to the right side of the top of the housing 1. A placement groove 14 is opened at the bottom of the connection block 13. Guide grooves 26 are opened above both sides of the inner cavity of the placement groove 14. A guide bar 28 is slidably connected to the inner cavity of the guide groove 26. A sealing plate 29 is fixedly connected to the opposite sides of the two guide bars 28. Both the guide groove 26 and the guide bar 28 are T-shaped. The vertical section of the placement groove 14 is concave. A notch is opened at the center of the bottom of the inner cavity of the placement groove 14. A cooling box 15 is fixedly connected to the top of the inner cavity of the placement groove 14. An oil pump 16 is fixedly connected to the right side of the top of the inner cavity of the housing 1. The oil inlet end of the oil pump 16 penetrates into the inner cavity of the placement groove 14 and is communicated with the cooling box 15. The oil outlet end of the oil pump 16 is communicated with a conduit one 17. One end of the conduit one 17 away from the oil pump 16 is communicated with a conduit two 18. One end of the conduit two 18 away from the conduit one 17 is communicated with the heat dissipation pipe 9.

[0034] Specifically, cushion blocks 20 are fixedly connected to the four corners of the bottom of the housing 1, and the height of the cushion blocks 20 is 2 - 10 centimeters.

[0035] In this embodiment: Through the setting of the cushion blocks 20, the contact distance between the housing 1 and the plane is raised, the air circulation at the bottom of the housing 1 is enhanced, and the heat dissipation efficiency of the battery pack 2 is further improved.

[0036] Specifically, the battery packs 2 are arranged in an array, and heat conductive silicone sheets 21 are fixedly connected to the opposite sides of two battery packs 2. Arc surfaces are arranged at the four corners of the heat conductive silicone sheets 21.

[0037] In this embodiment: Through the setting of the heat conductive silicone sheets 21, the connection gap between two adjacent battery packs 2 is filled, the obstacle to heat transfer is reduced before the air is discharged from the contact surface, and the heat dissipation efficiency is further improved.

[0038] Specifically, threaded holes 22 are provided at the four corners of the front surface of the baffle 3. A bolt 23 is threadedly connected to the inner cavity of the threaded hole 22. The baffle 3 and the housing 1 are threadedly connected by the bolt 23.

[0039] In this embodiment: By the combined use of the threaded hole 22 and the bolt 23, it is convenient for the user to disassemble the baffle 3, and further facilitates the user to repair the components inside the housing 1.

[0040] Specifically, a first filter screen 24 is fixedly connected to the top of the inner cavity of the air outlet hole 7.

[0041] In this embodiment: Through the setting of the first filter screen 24, it plays a role in preventing external dust from falling into the housing 1 through the air outlet hole 7 and improving the protection performance of the device.

[0042] Specifically, heat dissipation holes 25 are provided at the top of the sealing plate 29, and a second filter screen is filled in the inner cavity of the heat dissipation holes 25.

[0043] In this embodiment: Through the setting of the heat dissipation holes 25, it plays a role in enhancing the air circulation in the placement groove 14 and accelerating the heat dissipation of the cooling box 15.

[0044] Specifically, a fixing frame 27 is fixedly connected to the bottom of the oil pump 16, and the top of the fixing frame 27 is fixedly connected to the housing 1.

[0045] Specifically, inclined surfaces 19 are provided on the front side and the rear side of the top of the housing 1.

[0046] In this embodiment: Through the setting of the inclined surfaces 19, it is beneficial to the flow of heat, and at the same time improves the aesthetics and saves manufacturing costs.

[0047] In this embodiment: Through the setting of the fixing frame 27, it plays a role in supporting and fixing the oil pump 16 and enhancing the structural stability.

[0048] Working principle and usage process of the present invention: The user fixes the baffle 3 to the housing 1 through the cooperation of the threaded hole 22 and the bolt 23; then fixes the heat-conducting silicone sheet 21 between the two battery packs 2. When the battery packs 2 start to operate, first the heat is transferred to the refrigerating sheet 12, and then the heat generated by the battery packs 2 is absorbed through the second heat dissipation plate 10 and the heat-conducting grease layer 11. Through the arrangement of the convex peaks on the surface of the second heat dissipation plate 10, the contact area between the second heat dissipation plate 10 and the air is increased, further improving the heat transfer efficiency. Then, due to the excellent heat conductivity and fast heat dissipation of the second heat dissipation plate 10, the absorption of the heat of the battery packs 2 is further accelerated and dissipated. At the same time, the connection gaps between the battery packs 2 are filled by the heat-conducting silicone sheet 21, and the air is quickly discharged from the contact surface between two adjacent battery packs 2, further promoting the heat dissipation; Next, turn on the oil pump 16. The oil pump 16 transports the heat dissipation oil in the cooling tank 15 to the conduit 17, the conduit 18 and the heat dissipation tube 9 through the oil inlet end of the oil pump 16. The heat is taken away by the circulation of the heat dissipation oil. Then the heat dissipation oil absorbs the heat and further exports part of the heat of the top second heat dissipation plate 10 and the heat-conducting grease layer 11. Then, turn on the heat dissipation fan 5, use the heat dissipation fan 5 to generate a high-speed air flow, and send the cold air flow out through the ventilation hole 6, and then dissipate the heat absorbed by the second heat dissipation plate 10 and the heat-conducting grease layer 11. Then, the hot air flow climbs upward and is dissipated to the outside through the air outlet hole 7, thus completing the heat dissipation and ventilation of the battery packs 2.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0050] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to what is defined by the claims.

Claims

1. An efficient heat dissipation and ventilation device for a new energy vehicle battery pack, comprising: A housing (1) and a battery pack (2), characterized in that: a baffle (3) is connected to one side of the housing (1), a cavity (4) is provided inside the housing (1), a cooling fan (5) is fixedly connected to the bottom of the inner cavity of the cavity (4), a plurality of ventilation holes (6) are provided at equal intervals at the bottom of the inner cavity of the housing (1), and an air outlet hole (7) is provided at the top of the housing (1); A first heat dissipation plate (8) is fixedly connected to the bottom of the inner cavity of the housing (1), a heat dissipation pipe (9) is fixedly connected to the top of the first heat dissipation plate (8), a second heat dissipation plate (10) is fixedly connected above the surface of the heat dissipation pipe (9), convex peaks are provided on the surface of the second heat dissipation plate (10), and a strip-shaped groove is formed between two convex peaks. A thermal grease layer (11) is fixedly connected to the top of the second heat dissipation plate (10), a thermoelectric cooler (12) is fixedly connected to the top of the thermal grease layer (11), the battery pack (2) is located above the thermoelectric cooler ( ​ 2. The efficient heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, characterized in that: ​ 3. The high-efficiency heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, wherein: ​ 4. An efficient heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, characterized in that: ​ 5. The high-efficiency heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, characterized in that: ​ 6. The high-efficiency heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 5, wherein: ​ 7. An efficient heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, characterized in that: ​ 8. The efficient heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, wherein: ​ 9. The efficient heat dissipation and ventilation device for a new energy vehicle battery pack according to claim 1, wherein: ​

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