CN217158328U - Battery air cooling system - Google Patents

Abstract

The utility model discloses a battery air cooling system, including box and battery module, set up first baffle in the box, the bottom plate interval of first baffle and box, first baffle runs through and is provided with a plurality of first openings and a plurality of second opening, the battery module sets up the one side of keeping away from the bottom plate at first baffle, one side that first baffle is close to the bottom plate is provided with along the air inlet duct and the exhaust duct of battery module length direction extension, air inlet duct and first opening intercommunication, exhaust duct and second opening intercommunication, the battery module includes a plurality of electric cores, be provided with the cooling air duct between two adjacent electric cores, the wind of air inlet duct gets into the exhaust duct behind the cooling air duct. The utility model discloses a battery air-cooling system is through being in the same place air inlet duct and air-out duct and box integration, can improve the space utilization of box and reduce the volume of battery air-cooling system, and wind can directly advance in air inlet duct and air-out duct and directly go out in addition, can reduce the windage effectively, improves the radiating effect of battery air-cooling system.

Description

Battery air cooling system

Technical Field

The utility model relates to a battery technology field especially relates to a battery air-cooling system.

Background

During the use of the electric automobile, the power battery system is one of the main energy for providing the automobile. And the heat dissipation system of the power battery system is poorly designed, which can cause serious temperature nonuniformity and greatly weaken the service life of the power battery system. Therefore, it is often necessary to control the temperature of the power cell system during use during the design of the power cell system.

In order to achieve economic, environmental protection and safety, the power battery system usually adopts an air cooling mode for heat dissipation. However, the air-cooled heat dissipation air duct of the conventional power battery system is generally arranged inside the battery box body, occupies the internal space of the box body, reduces the space utilization rate of the battery system, and has poor heat dissipation effect, so that a user has to select other heat dissipation ways with higher cost to replace or assist air cooling for heat dissipation, and the weight and the structural complexity of the power battery system are increased.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the battery air cooling system is simple in air duct structure, capable of improving the heat dissipation effect and the heat dissipation uniformity and reducing the size of the battery air cooling system.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

the utility model provides a battery air-cooling system, including box and battery module, set up first baffle in the box, first baffle with the bottom plate interval of box, first baffle runs through and is provided with a plurality of first openings and a plurality of second opening, the battery module sets up first baffle is kept away from one side of bottom plate, first baffle is close to one side of bottom plate is provided with the edge the air inlet duct and the exhaust duct that battery module length direction extends, the air outlet of air inlet duct with first opening intercommunication, the air intake of exhaust duct with second opening intercommunication, the battery module includes a plurality of electric cores, adjacent two be provided with the cooling duct between the electric core, the wind of air inlet duct gets into behind the cooling duct the exhaust duct.

As a preferable scheme of the battery air cooling system, an intermediate air duct 6 is further arranged in the box body 1, and the intermediate air duct is respectively in sealed communication with the first opening and the cooling air duct.

As a preferable scheme of the battery air cooling system, at least two air inlet ducts are provided, each air inlet duct is provided with a plurality of first openings with different sizes along the length direction, the middle air duct is provided with a plurality of second partition plates at intervals along the length direction, the middle air duct is divided into a plurality of chambers by the second partition plates, and the total area of all the first openings communicated in each chamber is equal, so that the air inlet volume of each chamber is the same.

As a preferable scheme of the battery air cooling system, an air duct support is arranged on the first partition plate, and the middle air duct is arranged on the air duct support.

As a preferable scheme of the battery air cooling system, two battery modules are arranged at intervals, the air duct support is arranged between the two battery modules, and the second openings correspond to the air outlets of the cooling air ducts one to one.

As a preferable scheme of the battery air-cooling system, a connection surface between the air duct support and the battery module and a connection surface between the air duct support and the first partition plate are both provided with first sealing elements.

As a preferable scheme of the battery air cooling system, an air cooling plate is hermetically arranged between every two adjacent electric cores, and the cooling air duct is arranged inside the air cooling plate.

As a preferable scheme of the battery air-cooling system, the air-cooling plate is provided with at least one air-cooling plate air outlet and a plurality of air-cooling plate air inlets arranged at intervals along the vertical direction, and the plurality of air-cooling plate air inlets, the cooling air duct and the air-cooling plate air outlet are sequentially communicated.

As a preferable mode of the air-cooling system for the battery, a second sealing member is provided between the battery module and the first separator.

As a preferable scheme of the battery air-cooling system, the box body includes a lower box body and a cover plate, and a third sealing member is disposed between the lower box body and the cover plate.

The utility model discloses beneficial effect does: through integrating air inlet duct and exhaust duct in box 1, air inlet duct and exhaust duct can not occupy the space in the box to improve the space utilization in the box and reduce battery air-cooled system's volume, and air inlet duct and exhaust duct extend along battery module length direction, the corner of air inlet duct and exhaust duct is few, length is short, and wind can directly advance straight-out in air inlet duct and exhaust duct, has reduced the windage effectively, thereby improves battery air-cooled system's radiating effect, simultaneously reduce cost.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a perspective view of a battery air-cooling system according to an embodiment of the present invention.

Fig. 2 is an exploded assembly view of the battery air-cooling system according to the embodiment of the present invention.

Fig. 3 is a cross-sectional view of a battery air-cooling system according to an embodiment of the present invention.

Fig. 4 is an assembly diagram of the box and the air duct bracket according to the embodiment of the present invention.

Fig. 5 is a top view of the lower case according to the embodiment of the present invention.

Fig. 6 is an exploded view of the box battery module according to the embodiment of the present invention.

Fig. 7 is a bottom view of the air-cooling panel according to the embodiment of the present invention.

Fig. 8 is a sectional view a-a of fig. 7.

In the figure:

1. a box body; 11. a first separator; 111. a first opening; 112. a second opening; 12. a base plate; 13. a lower box body; 14. a cover plate; 2. a battery module; 21. an electric core; 22. an air-cooled panel; 221. an air outlet of the air cooling plate; 222. an air inlet of the air cooling plate; 23. a side plate; 24. an end plate; 3. an air inlet duct; 4. an air outlet channel; 5. a cooling air duct; 6. a middle air duct; 61. a second separator; 62. a chamber; 7. an air duct bracket; 8. a fastener; 9. a gasket is provided.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 3, the utility model provides a battery air-cooling system includes box 1 and battery module 2, set up first baffle 11 in the box 1, first baffle 11 separates with the bottom plate 12 of box 1, first baffle 11 runs through and is provided with a plurality of first openings 111 and a plurality of second opening 112, battery module 2 sets up the one side of keeping away from bottom plate 12 at first baffle 11, one side that first baffle 11 is close to bottom plate 12 is provided with air inlet duct 3 and the exhaust duct 4 that extends along battery module 2's length direction, the air outlet and the first opening 111 intercommunication of air inlet duct 3, the air intake and the second opening 112 intercommunication of exhaust duct 4, battery module 2 includes a plurality of electric core 21, be provided with cooling air duct 5 between two adjacent electric core 21, the wind of air inlet duct 3 enters exhaust duct 4 behind cooling air duct 5. Understandably, first baffle 11 forms a body structure through the welding with box 1, and the bottom of box 1 is formed with the installation cavity, forms air inlet duct 3 and exhaust passage 4 through the baffle interval in the installation cavity, and the air intake of air inlet duct 3 all communicates with the outside of box 1 with the air outlet of exhaust passage 4, and outside wind can follow air inlet duct 3 and advance into exhaust passage 4 and discharge behind cooling duct 5. Through integrating air inlet duct 3 and exhaust duct 4 in box 1, air inlet duct 3 and exhaust duct 4 can not occupy the space in box 1 to improve the space utilization in box 1 and reduce the volume of battery air-cooling system, and air inlet duct 3 and exhaust duct 4 extend along the length direction of battery module 2, the corner of air inlet duct 3 and exhaust duct 4 is few, short length, wind energy can directly advance in air inlet duct 3 and exhaust duct 4 and directly go out, has reduced the windage effectively, improves the radiating effect of battery air-cooling system, and reduce cost simultaneously.

Specifically, referring to fig. 3, an intermediate air duct 6 is further disposed in the box body 1, and the intermediate air duct 6 is in sealed communication with the first opening 111 and the cooling air duct 5, respectively. Through setting up well wind channel 6, can keep apart battery module 2 and the wind that flows to cooling air duct 5 from air inlet 3, avoid impurity such as steam, dust in the wind and battery module 2 direct contact to influence battery module 2's performance and reduce battery module 2's life.

Further, as shown in fig. 2 and 4, the first partition 11 is provided with the duct bracket 7, and the middle duct 6 is provided in the duct bracket 7. It can be understood that the duct bracket 7 is hermetically connected with the first partition plate 11 and the battery module 2, and the middle duct 6 is formed inside the duct bracket 7. Through setting up wind channel support 7, can lead to wind, make wind fast flow to cooling air duct 5 dispel the heat, improve the radiating efficiency to battery module 2.

Specifically, the connection surface of the air duct support 7 and the battery module 2, and the connection surface of the air duct support 7 and the first partition plate 11 are provided with first sealing members (not shown in the figure). The sealing requirement of the battery air cooling system during heat dissipation can be guaranteed by arranging the first sealing element.

Preferably, the first seal is a sealing foam.

Specifically, referring to fig. 2, the duct bracket 7 is fixed to the first partition plate 11 by a fastening member 8, and a sealing gasket 9 is provided between the fastening member 8 and the duct bracket 7. The sealing performance of the middle air duct 6 is further ensured by arranging a sealing gasket 9.

In this embodiment, referring to fig. 2, two battery modules 2 are arranged at intervals, the air duct support 7 is arranged between the two battery modules 2, the first opening 111 is arranged between the two battery modules 2, the second openings 112 are arranged in two rows, and the second openings 112 correspond to the air outlets of the cooling air duct 5 one by one. This design can realize that wind channel 6 will flow into simultaneously in wind channel 6 leads two battery module 2 in one to reduce the sealed face of the quantity of wind channel support 7 and wind channel support 7, reduce 1 volumes of box, reduce cost.

Specifically, a second seal (not shown in the drawings) is provided between the battery module 2 and the first separator 11. By designing the second sealing member, the joint between the second opening 112 and the air outlet of the cooling air duct 5 can be sealed.

Preferably, the second seal is also a sealing foam.

Specifically, referring to fig. 1 and 2, the case 1 includes a lower case 13 and a cover plate 14, the lower case 13 and the bottom plate 12 are integrally formed by welding, and a third sealing member (not shown) is disposed between the lower case 13 and the cover plate 14, and the third sealing member is a sealing ring. Through setting up the third sealed pad, further guarantee the leakproofness of battery module 2 in box 1, the heat dissipation wind channel that air inlet duct 3, well wind channel 6, cooling air duct 5 and air-out duct 4 formed can be sealed completely, and battery air-cooling system can realize IP 67's sealed requirement when radiating.

Illustratively, referring to fig. 2, at least two air inlet ducts 3 are provided, each air inlet duct 3 is correspondingly provided with a plurality of first openings 111 with different sizes along the length direction, the middle air duct 6 is provided with a plurality of second partition boards 61 at intervals along the length direction, the middle air duct 6 is divided into a plurality of chambers 62 by the second partition boards 61, and the total area of all the first openings 111 communicated in each chamber 62 is equal, so that the air inlet amount of each chamber 62 is the same. Since the first opening 111 near the inlet of the air duct 3 has a larger intake air amount than the first opening 111 far from the inlet of the air duct 3 in the direction of the flow of the air, the battery module 2 is likely to have a non-uniform heat dissipation phenomenon. Each of the middle air ducts 6 is provided with a plurality of first openings 111 with different sizes at intervals along the length direction (i.e., the flowing direction of the cold air), so that the air intake rate of each of the first openings 111 is different, but the total area of all the first openings 111 in each of the chambers 62 is equal, so as to control the air intake rate in each of the chambers 62 to be the same, further make the air flow rate of all the cooling air ducts 5 flowing to each of the battery modules 2 to be the same, and improve the uniformity and the heat dissipation effect of heat dissipation on the battery modules 2.

In this embodiment, referring to fig. 6 to 8, an air cooling plate 22 is hermetically disposed between two adjacent electric cores 21, and a cooling air duct 5 is disposed inside the air cooling plate 22. Through setting up cooling air duct 5 in air-cooled plate 22, and the setting of sealing between air-cooled plate 22 and electric core 21, can further guarantee the leakproofness between cooling air duct 5 and electric core 21 when the heat dissipation.

Specifically, the air-cooled plate 22 is disposed between two adjacent battery cells 21 through pretightening force sealing. Battery module 2 still includes curb plate 23 and end plate 24, and a plurality of electric cores 21 and air-cooling board 22 constitute the electric core group, and the electric core group all is provided with end plate 24 along length direction's both ends, two end plates 24 of curb plate 23 straining to make electric core 21 and air-cooling board 22 firmly fixed together, and provide the pretightning force and make air-cooling board 22 seal and set up between two adjacent electric cores 21.

Further, referring to fig. 8, the air-cooled plate 22 has at least one air-cooled plate air outlet 221 and a plurality of air-cooled plate air inlets 222 arranged at intervals along the vertical direction, and the plurality of air-cooled plate air inlets 222, the cooling air duct 5 and the air-cooled plate air outlet 221 are sequentially communicated. Specifically, the air-cooling plate 22 is provided with a plurality of flow guide grooves with air inlets along the vertical direction, and the plurality of flow guide grooves are gathered at one air outlet to form the cooling air duct 5. This design can increase the heat radiating area to electric core 21 to reinforcing radiating effect has effectively reduced the difference in temperature between electric core 21 when battery module 2 is stable moving, further improves battery module 2's heat dissipation homogeneity.

In the description herein, it is to be understood that the terms "upper" and the like are used in a descriptive sense and based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, configuration and operation in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description herein, references to the description of "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. The utility model provides a battery air-cooling system, includes box and battery module, its characterized in that, set up first baffle in the box, first baffle with the bottom plate interval of box, first baffle runs through and is provided with a plurality of first openings and a plurality of second opening, the battery module sets up first baffle is kept away from one side of bottom plate, first baffle is close to one side of bottom plate is provided with the edge air inlet duct and the exhaust duct that battery module length direction extends, the air outlet of air inlet duct with first opening intercommunication, the air intake of exhaust duct with second opening intercommunication, the battery module includes a plurality of electric cores, adjacent two be provided with cooling duct between the electric core, the wind of air inlet duct gets into behind cooling duct the exhaust duct.

2. The air cooling system for the battery according to claim 1, wherein a middle air duct is further arranged in the box body, and the middle air duct is respectively in sealed communication with the first opening and the cooling air duct.

3. The battery air cooling system according to claim 2, wherein there are at least two air inlet ducts, each air inlet duct has a plurality of first openings with different sizes along a length direction, the middle air duct has a plurality of second partitions at intervals along the length direction, the second partitions divide the middle air duct into a plurality of chambers, and the total area of all the first openings communicated in each chamber is equal, so that the air inlet volume of each chamber is the same.

4. The battery air-cooling system of claim 2, wherein the first partition is provided with an air duct bracket, and the middle air duct is provided on the air duct bracket.

5. The air-cooling system for the batteries according to claim 4, wherein two battery modules are arranged at intervals, the air duct bracket is arranged between the two battery modules, and the second openings correspond to the air outlets of the cooling air ducts one by one.

6. The air-cooling system for the batteries according to claim 4, wherein a first sealing member is disposed on a connection surface of the air duct bracket and the battery module and a connection surface of the air duct bracket and the first partition plate.

7. The air cooling system for the battery according to claim 1, wherein an air cooling plate is hermetically arranged between two adjacent electric cores, and the cooling air duct is arranged inside the air cooling plate.

8. The air-cooling system for the battery according to claim 7, wherein the air-cooling plate has at least one air-cooling plate air outlet and a plurality of air-cooling plate air inlets spaced apart in a vertical direction, and the plurality of air-cooling plate air inlets, the cooling air duct and the air-cooling plate air outlet are sequentially communicated.

9. The battery air-cooling system according to claim 1, wherein a second seal is provided between the battery module and the first separator.

10. The battery air-cooling system according to claim 1, wherein the case includes a lower case and a cover plate, and a third sealing member is provided between the lower case and the cover plate.

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