CN220233290U - Battery box, battery package and vehicle - Google Patents

Abstract

The utility model discloses a battery box, a battery pack and a vehicle, wherein the battery box comprises: the device comprises a box seat, a box cover, a first impeller assembly, a second impeller assembly and a driving mechanism. The bottom of the box seat is provided with an air outlet; the box cover is connected with the box seat and jointly defines an accommodating space, and the top of the box cover is provided with an air inlet; the first impeller assembly is arranged on the box cover and positioned in the accommodating space and used for driving airflow to enter the accommodating space from the air inlet; the second impeller component is arranged on the box seat and positioned at the air outlet for driving the air flow in the accommodating space to flow out from the air outlet; the driving mechanism is arranged on at least one of the box seat and the box cover and is connected with the first impeller assembly and the second impeller assembly. According to the battery box, the box cover is connected with the box seat, the containing space is defined jointly, the first impeller assembly drives air flow to enter the containing space from the air inlet, heat of the battery module is taken away, and the second impeller assembly drives the air flow to flow out from the air outlet, so that heat dissipation of the battery module is achieved.

Description

Battery box, battery package and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a battery box, a battery pack and a vehicle.

Background

Along with the gradual enhancement of environmental awareness of people, electric vehicles are also becoming popular, and battery packs used in the fields of electric vehicles and the like are continuously developed and improved. In view of the continuous popularization and use of the current electric automobile, the heat dissipation function of the battery module is increasingly receiving attention in consideration of the limitation of the battery pack in the high-temperature or low-temperature state and the reliability of the battery module.

Referring to a related art document CN201820505249.1, a heat dissipation battery box is disclosed, comprising a box body, a battery module and a cooling device; the box body is provided with an air inlet and an air outlet; the battery module comprises a plurality of rows of electric cores, each row of electric cores comprises a plurality of single electric cores which are arranged in parallel, air channels are arranged between two adjacent rows of electric cores, the air channels are sealed relatively, the battery module is arranged in the box body, and two ports of each air channel are respectively communicated with the air inlet and the air outlet; the cooling device is arranged on the box body and used for driving air to flow into the box body from the air inlet, sequentially flow through the ventilating duct and the air outlet and finally be discharged out of the box body.

At this moment, the cooling device is arranged at the air outlet and comprises a fan and a mounting plate, the fan is fixed on the mounting plate, the mounting plate is arranged on the air outlet, the air suction surface of the fan is close to the battery module, when the fan works, the fan blades of the fan rotate to enable pressure difference to be formed at two sides of the fan blades, the pressure on one side of the air suction surface is high, the pressure on one side of the air outlet surface is low, air flows from high pressure to low pressure, and then hot air in the box body can be discharged from the air outlet. However, the air intake at the air inlet of the battery box may be smaller, and the heat exchange requirement of the battery box cannot be met.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the battery box, wherein the battery box is filled with air through the air inlet, takes away heat of the battery module and flows out through the air outlet, so that heat dissipation of the battery module is realized.

The utility model further provides a battery pack, which comprises the battery box.

The utility model further provides a vehicle which comprises the battery pack.

The battery box comprises a box seat, a box cover, a first impeller assembly, a second impeller assembly and a driving mechanism. The bottom of the box seat is provided with an air outlet; the box cover is connected with the box seat and jointly defines an accommodating space, and the top of the box cover is provided with an air inlet; the first impeller assembly is arranged on the box cover and positioned in the accommodating space and used for driving air flow to enter the accommodating space from the air inlet; the second impeller assembly is arranged on the box seat and positioned at the air outlet for driving the air flow in the accommodating space to flow out of the air outlet; the driving mechanism is arranged on at least one of the box seat and the box cover and is connected with the first impeller assembly and the second impeller assembly.

According to the battery box disclosed by the embodiment of the utility model, the box cover is connected with the box seat to jointly define the accommodating space, the accommodating space is internally used for accommodating the battery module, the driving mechanism drives the first impeller assembly and the second impeller assembly, the first impeller assembly drives air flow to enter the accommodating space from the air inlet at the top of the box cover and takes away heat in the accommodating space, and the second impeller assembly drives the air flow to flow out from the air outlet at the bottom of the box seat and simultaneously takes away heat of the battery module, so that heat dissipation of the battery module is realized.

In some embodiments of the present utility model, the first impeller assembly includes a plurality of first impellers spaced apart, each of the plurality of first impellers being rotatably disposed on the cover, and the driving mechanism is configured to drive the plurality of first impellers to rotate.

In some embodiments of the present utility model, the inner surface of the case cover has a plurality of mounting grooves protruding toward a direction away from the case base, and the plurality of first impellers are respectively disposed in the plurality of mounting grooves.

In some embodiments of the present utility model, a first connecting cavity is formed in the top of the case cover, the plurality of mounting grooves are all communicated with the first connecting cavity, and the air inlet is communicated with the first connecting cavity.

In some embodiments of the utility model, the battery box further comprises a conduction member, the conduction member comprises a communication pipe and a gas collecting cover, one end of the communication pipe is communicated with the gas inlet, and the gas collecting cover is arranged at the other end of the communication pipe.

In some embodiments of the present utility model, a mounting cylinder is connected to the air outlet, and the second impeller assembly is disposed in the mounting cylinder.

In some embodiments of the present utility model, a plurality of air outlet pipes are connected to the outer peripheral wall of the mounting cylinder, the plurality of air outlet pipes being spaced apart in the circumferential direction of the mounting cylinder, each air outlet pipe extending in the radial direction of the mounting cylinder.

In some embodiments of the present utility model, the battery case further includes a partition plate disposed in the receiving space to divide the receiving space into a plurality of subspaces, a cavity is formed in the partition plate, a vent hole communicating with the cavity is formed on a surface of the partition plate facing the subspace, and a connection hole is formed at a top of the partition plate.

In some embodiments of the utility model, a second connecting cavity is formed in the bottom of the box base, the second connecting cavity being in communication with the receiving space and in communication with the air outlet.

In some embodiments of the utility model, a transition chamber is provided at the bottom of the tank base, the transition chamber being located between the partition and the second connecting chamber and communicating with the cavity and the second connecting chamber.

In some embodiments of the utility model, the drive mechanism comprises a drive motor, a drive gear, a first transmission mechanism and a second transmission mechanism, wherein the drive motor is arranged on the box seat; the driving gear is connected with an output shaft of the driving motor; the first transmission mechanism is connected with the first impeller assembly; the second transmission mechanism is connected with the second impeller assembly.

In some embodiments of the utility model, the first transmission mechanism comprises a driving pulley, a driven pulley, a belt and a first rotating shaft, wherein the driving pulley is connected with the driving gear and coaxially rotates; the driven belt pulley is rotatably arranged on the box cover; the belt is sleeved on the driving belt pulley and the driven belt pulley; one end of the first rotating shaft is connected with the driven belt pulley and synchronously rotates, a part of the first rotating shaft is formed into a worm, and a worm wheel matched with the worm is connected to the first impeller assembly.

In some embodiments of the present utility model, the first impeller assembly includes a plurality of first impellers, the plurality of first impellers are arranged in a plurality of rows at intervals, each first impeller is connected with the worm wheel, the driven pulley, the belt and the first rotating shaft are respectively corresponding to the plurality of rows of first impellers, each first rotating shaft is provided with a plurality of worms, and the plurality of worms are respectively matched with the worm wheels on the corresponding rows of the plurality of impellers.

In some embodiments of the present utility model, the second transmission mechanism includes a driven gear, a second rotating shaft, a first helical gear and a second helical gear, where the driven gear is provided on the box base and meshed with the driving gear; one end of the second rotating shaft is connected with the driven gear and synchronously rotates; the first bevel gear is connected with the other end of the second rotating shaft; the second bevel gear is connected with the second impeller assembly and is matched with the first bevel gear.

The battery pack comprises the battery module and the battery box, wherein the battery module is arranged in the accommodating space.

According to the battery pack disclosed by the embodiment of the utility model, the box cover is connected with the box seat and jointly defines the accommodating space, the accommodating space is internally used for accommodating the battery module, the driving mechanism drives the first impeller assembly and the second impeller assembly, the first impeller assembly drives air flow to enter the accommodating space from the air inlet at the top of the box cover and takes away heat in the accommodating space, and the second impeller assembly drives the air flow to flow out from the air outlet at the bottom of the box seat, so that heat of the battery module is taken away, heat dissipation of the battery module is realized, and the heat of the battery module is fully dissipated in the circulation of the air flow, so that the safety of the battery pack is higher.

The vehicle according to the embodiment of the utility model comprises the battery pack.

According to the vehicle provided by the embodiment of the utility model, the box cover is connected with the box seat, the containing space is jointly limited, the battery module is placed in the containing space, the driving mechanism drives the first impeller assembly and the second impeller assembly, the first impeller assembly drives air flow to enter the containing space from the air inlet at the top of the box cover and takes away heat in the containing space, and then the second impeller assembly drives the air flow to flow out from the air outlet at the bottom of the box seat, and meanwhile, the heat of the battery module is taken away, so that the heat of the battery module is dissipated, the heat of the battery module is fully dissipated in the circulation of the air flow, the safety of the battery pack is higher, and the discharging process of the battery module in the running process of the vehicle is more reliable.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a battery box according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view of a battery box according to an embodiment of the present utility model;

fig. 3 is a perspective view of a case base of a battery case according to an embodiment of the present utility model;

fig. 4 is a perspective view of a cover of a battery box according to an embodiment of the present utility model;

fig. 5 is a perspective view of a driving mechanism, a first impeller assembly, and a second impeller assembly of a battery box according to an embodiment of the present utility model.

Reference numerals:

100. a battery box;

1. a box base; 11. an air outlet; 12. a mounting cylinder; 13. an air outlet pipe; 14. a second connecting cavity; 15. a transition chamber;

2. a case cover; 21. an air inlet; 22. a mounting groove; 23. a first connection chamber;

3. a first impeller assembly; 31. a first impeller; 311. a worm wheel;

4. a second impeller assembly;

5. a driving mechanism; 51. a driving motor; 52. a drive gear; 53. a first transmission mechanism; 531. a driving pulley; 532. a driven pulley; 533. a belt; 534. a first rotating shaft; 5341. a worm; 54. a second transmission mechanism; 541. a driven gear; 542. a second rotating shaft; 543. a first helical gear; 544. a second helical gear;

6. a conductive member; 61. a communicating pipe; 62. a gas collecting hood;

7. a partition plate; 71. a cavity; 72. a vent hole; 73. and a connection hole.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A battery case 100 according to an embodiment of the present utility model is described below with reference to fig. 1 to 5.

As shown in fig. 1, 2 and 5, a battery box 100 according to an embodiment of the present utility model includes a box base 1, a box cover 2, a first impeller assembly 3, a second impeller assembly 4 and a driving mechanism 5.

As shown in fig. 3 and 4, the bottom of the box base 1 has an air outlet 11, and the box cover 2 is connected to the box base 1 and defines a receiving space together, and the top of the box cover 2 has an air inlet 21. The first impeller assembly 3 is arranged on the box cover 2 and is positioned in the accommodating space and used for driving air flow to enter the accommodating space from the air inlet 21, the second impeller assembly 4 is arranged on the box seat 1 and is positioned at the air outlet 11 and used for driving air flow in the accommodating space to flow out from the air outlet 11, and the driving mechanism 5 is arranged on at least one of the box seat 1 and the box cover 2 and is connected with the first impeller assembly 3 and the second impeller assembly 4. Be used for placing the battery module in the accommodation space, drive first impeller subassembly 3 and the rotation of second impeller subassembly 4 through actuating mechanism 5 for first impeller subassembly 3 drive air current gets into accommodation space from air inlet 21, is driven by second impeller subassembly 4 again, makes the air current flow out from gas outlet 11, takes away the heat of battery module simultaneously, has realized battery module's heat dissipation.

According to the battery box 100 of the embodiment of the utility model, the box cover 2 is connected with the box seat 1 and jointly defines an accommodating space, a battery module is placed in the accommodating space, the driving mechanism 5 drives the first impeller assembly 3 and the second impeller assembly 4, the first impeller assembly 3 drives air flow to enter the accommodating space from the air inlet 21 positioned at the top of the box cover 2, and then the air flow is driven by the second impeller assembly 4, so that the air flow flows out from the air outlet 11 positioned at the bottom of the box seat 1, heat of the battery module is taken away, and heat dissipation of the battery module is realized.

In some embodiments of the present utility model, as shown in fig. 5, the first impeller assembly 3 includes a plurality of first impellers 31 spaced apart, the plurality of first impellers 31 are rotatably disposed on the case cover 2, the driving mechanism 5 is configured to drive the plurality of first impellers 31 to rotate, and by providing a plurality of first impellers 31 spaced apart to rotate, air flows are driven to enter the accommodating space from the air inlet 21, so that the air flows entering the accommodating space everywhere are uniform, the heat dissipation of the battery module in the accommodating space is facilitated, and the uniformity of the heat dissipation of the battery module can be ensured.

In some embodiments of the present utility model, as shown in fig. 4, the inner surface of the case cover 2 has a plurality of mounting grooves 22 protruding toward a direction away from the case base 1, and a plurality of first impellers 31 are respectively disposed in the plurality of mounting grooves 22, so that the first impellers 31 and the battery module can be protected, and the first impellers 31 can be prevented from occupying the space of the battery module, thereby facilitating the disposition of the battery module, and thus, the energy density of the battery pack can be increased.

Further, as shown in fig. 2, a first connecting cavity 23 is formed in the top of the case cover 2, the plurality of mounting grooves 22 are all communicated with the first connecting cavity 23, the air inlet 21 is communicated with the first connecting cavity 23, external air enters the first connecting cavity 23 through the air inlet 21 and enters the mounting grooves 22 through the first connecting cavity 23, and is driven by the first impellers 31 in the plurality of mounting grooves 22 to be dispersed to the accommodating space more uniformly.

In some embodiments of the present utility model, as shown in fig. 1, the battery case 100 further includes the conduction member 6, the conduction member 6 includes the communication pipe 61 and the gas collecting cover 62, one end of the communication pipe 61 is connected to the gas inlet 21, the gas collecting cover 62 is provided at the other end of the communication pipe 61, and the gas collecting cover 62 faces the vehicle advancing direction during the running of the vehicle, so that the external gas flow can enter the communication pipe 61 from the gas collecting cover 62 to the greatest extent, enter the first connection chamber 23 from the gas inlet 21 through the communication pipe 61, enter the mounting groove 22 through the first connection chamber 23, are driven by the first impellers 31 in the plurality of mounting grooves 22, and are dispersed to the accommodating space more uniformly, thereby facilitating the heat dissipation of the battery module.

In some embodiments of the present utility model, as shown in fig. 2, the air outlet 11 is connected with the mounting cylinder 12, and the second impeller assembly 4 is disposed in the mounting cylinder 12, so as to protect the second impeller assembly 4 and the battery module, and the second impeller assembly 4 can drive the air flow in the accommodating space to flow out from the air outlet 11, thereby taking away the heat of the battery module, and achieving the purpose of cooling the battery module.

Further, as shown in fig. 2, a plurality of air outlet pipes 13 are connected to the outer peripheral wall of the mounting cylinder 12, the plurality of air outlet pipes 13 being spaced apart in the circumferential direction of the mounting cylinder 12, each air outlet pipe 13 extending in the radial direction of the mounting cylinder 12. The second impeller assembly 4 drives the air flow to flow out along the plurality of air outlet pipes 13, so that the path of the air outflow can be increased, the heat dissipation can be quickened, and the emitted hot air is discharged by the air outlet pipes 13 extending along the radial direction of the mounting cylinder 12 at a longer interval and cannot be gathered at the air outlet 11, so that the risk of slow heat dissipation at the air outlet 11 is reduced.

In some embodiments of the present utility model, as shown in fig. 3, the battery case 100 further includes a partition 7, and the partition 7 is disposed in the accommodating space to divide the accommodating space into a plurality of sub-spaces, and the battery module may include a plurality of sub-modules, and each sub-space may be used to accommodate one sub-module, so that the battery modules do not interfere with each other, thereby ensuring safety. The cavity 71 is formed in the partition plate 7, the vent hole 72 communicated with the cavity 71 is formed in the surface of the partition plate 7 facing the subspace, heat on the sub-module is taken away by air flow flowing through the subspace, and then the air flows into the cavity 71 in the partition plate 7 through the vent hole 72, so that the hot air flows out conveniently, the heat dissipation effect of the battery module is guaranteed, and the connecting hole 73 is formed in the top of the partition plate 7, so that the battery module can be fixed.

Further, as shown in fig. 2, a second connecting cavity 14 is formed in the bottom of the case base 1, the second connecting cavity 14 is communicated with the accommodating space and is communicated with the air outlet 11, the air flow entering from the air inlet 21 passes through the accommodating space and takes away the heat on the battery module in the accommodating space, then the hot air flows into the second connecting cavity 14 from each cavity 71, and then flows to the air outlet 11 through the second connecting cavity 14, so that the hot air flows out of the battery case 100, and the effect of radiating the battery module is achieved.

Further, as shown in fig. 2, the bottom of the box base 1 is provided with a transition chamber 15, and the transition chamber 15 is located between the partition 7 and the second connection chamber 14 and communicates with the cavity 71 and the second connection chamber 14. The air flow entering from the air inlet 21 passes through the accommodating space and takes away the heat on the battery module in the accommodating space, then the hot air flows into the transition cavity 15 from each cavity 71, flows into the second connecting cavity 14 from the transition cavity 15, and flows to the air outlet 11 through the second connecting cavity 14, so that the hot air flows out of the battery box 100, and the effect of radiating the battery module is achieved. The hot gas in the accommodating space is concentrated to a certain extent in the transition cavity 15, so that the hot gas is convenient to flow out, the gas is prevented from flowing back, the risk of hot gas backflushing is reduced, and the influence on the battery module is avoided as much as possible.

In some embodiments of the present utility model, as shown in fig. 5, the driving mechanism 5 includes a driving motor 51, a driving gear 52, a first transmission mechanism 53, and a second transmission mechanism 54. The driving motor 51 is arranged on the box seat 1, the driving gear 52 is connected with an output shaft of the driving motor 51, and when the driving motor 51 works, the output shaft of the driving motor 51 rotates to drive the driving gear 52 to rotate and drive the first transmission mechanism 53 and the second transmission mechanism 54. The first transmission mechanism 53 is connected to the first impeller assembly 3, and the first impeller assembly 3 is driven to move by the first transmission mechanism 53. The second transmission mechanism 54 is connected with the second impeller assembly 4, and the second impeller assembly 4 is driven to move through the second transmission mechanism 54.

Further, as shown in fig. 5, the first transmission mechanism 53 includes a driving pulley 531, a driven pulley 532, a belt 533, and a first rotation shaft 534. The driving pulley 531 is connected with the driving gear 52 and coaxially rotates, the driven pulley 532 is rotatably provided on the case cover 2, the belt 533 is sleeved on the driving pulley 531 and the driven pulley 532, one end of the first rotation shaft 534 is connected with the driven pulley 532 and synchronously rotates, a part of the first rotation shaft 534 is formed as a worm 5341, and the worm wheel 311 matched with the worm 5341 is connected to the first impeller assembly 3. When the driving motor 51 works, the output shaft of the driving motor 51 rotates to drive the driving gear 52 to rotate, meanwhile, the driving belt pulley 531 is driven to rotate, the driven belt pulley 532 is driven to rotate through the belt 533, at the moment, the first rotating shaft 534 and the driven belt pulley 532 synchronously rotate, the worm 5341 on the first rotating shaft 534 rotates, and the rotation is transmitted to the first impeller assembly 3 through the cooperation of the worm 5341 of the worm wheel 311, so that the first impeller assembly 3 is driven to rotate, the speed of external air entering the accommodating space is accelerated, and the transmission process of the first transmission mechanism 53 is completed.

Further, as shown in fig. 5, the first impeller assembly 3 includes a plurality of first impellers 31, and the plurality of first impellers 31 are arranged at intervals in a plurality of rows, which is beneficial to uniformly radiating heat of the battery module and improves the heat radiation efficiency. Each first impeller 31 is connected with a worm wheel 311, the driven belt wheel 532, the belt 533 and the first rotating shaft 534 are multiple corresponding to the multiple rows of first impellers 31 one by one, each first rotating shaft 534 is provided with multiple worms 5341, and the multiple worms 5341 are respectively matched with the worm wheels 311 on the multiple impellers in the corresponding rows. It is understood that the plurality of first impellers 31 in each row are matched with the corresponding first rotating shafts 534 to form worm gears 311 and 5341, and the plurality of worm gears 5341 are arranged on the corresponding first rotating shaft 534, so that the arrangement number of the driven pulleys 532, the belts 533 and the first rotating shafts 534 can be reduced, the space occupied by the driving mechanism 5 is reduced, and the structural layout of the battery box 100 is optimized.

In addition, as shown in fig. 5, the second transmission mechanism 54 includes a driven gear 541, a second rotation shaft 542, a first helical gear 543, and a second helical gear 544. The driven gear 541 is disposed on the box base 1 and meshed with the driving gear 52, one end of the second rotating shaft 542 is connected to the driven gear 541 and rotates synchronously, the first bevel gear 543 is connected to the other end of the second rotating shaft 542, and the second bevel gear 544 is connected to the second impeller assembly 4 and cooperates with the first bevel gear 543. When the driving motor 51 operates, the output shaft of the driving motor 51 rotates to drive the driving gear 52 to rotate, and the driven gear 541 meshed with the driving gear 52 rotates to drive the second rotating shaft 542 rotating synchronously with the driven gear 541. The first bevel gear 543 located at the other end of the second rotating shaft 542 rotates along with the rotation of the second rotating shaft 542, and drives the second bevel gear 544 matched with the first bevel gear 543 to rotate, so that the second impeller assembly 4 rotates, the second impeller assembly 4 generates downward suction force, heat outflow is accelerated, and the transmission process of the second transmission structure is completed.

In this embodiment, the driving gear 52 and the driving pulley 531 are both mounted on the output shaft of the driving motor 51, when the driving motor 51 works, the driving gear 52 and the driving pulley 531 rotate along with the driving shaft, so that the first transmission structure and the second transmission structure can be driven simultaneously, and the transmission effects of the first transmission structure and the second transmission structure are utilized, so that external cold air enters the box cover 2 along the air inlet 21, uniformly acts on different battery modules, and finally, the heat is rapidly discharged out of the box seat 1 along the air outlet 11 at the bottom of the box seat 1 by utilizing the effect of the second transmission structure, so that the circulation is formed, the overall heat dissipation effect is improved, and the structure is simple and the operation is convenient.

A battery case 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings. It is to be understood that the following description is exemplary only, and is intended to be illustrative of the utility model and not to be construed as limiting the utility model.

Specifically, as shown in fig. 1, 2 and 5, the battery box 100 includes a box base 1, a box cover 2, a first impeller assembly 3, a second impeller assembly 4, a driving mechanism 5, a conductive member 6, and a partition 7. The bottom of the box seat 1 is provided with an air outlet 11, a second connecting cavity 14 is formed in the bottom of the box seat 1, the second connecting cavity 14 is communicated with the accommodating space and is communicated with the air outlet 11, the bottom of the box seat 1 is provided with a transition cavity 15, and the transition cavity 15 is positioned between the partition 7 and the second connecting cavity 14 and is communicated with the cavity 71 and the second connecting cavity 14. The cover 2 is coupled to the base 1 and defines a receiving space, and the cover 2 has an air inlet 21 at the top thereof.

As shown in fig. 2 and 5, the first impeller assembly 3 is disposed on the case cover 2 and is located in the accommodating space for driving air flow from the air inlet 21 into the accommodating space, the first impeller assembly 3 includes a plurality of first impellers 31 spaced apart, the plurality of first impellers 31 are all rotatably disposed on the case cover 2, the inner surface of the case cover 2 has a plurality of mounting grooves 22 protruding toward a direction away from the case base 1, the plurality of first impellers 31 are respectively disposed in the plurality of mounting grooves 22, a first connecting cavity 23 is formed in the top of the case cover 2, the plurality of mounting grooves 22 are all communicated with the first connecting cavity 23, the air inlet 21 is communicated with the first connecting cavity 23, and the driving mechanism 5 is used for driving the plurality of first impellers 31 to rotate.

The second impeller assembly 4 is arranged on the box seat 1 and is positioned at the air outlet 11 and used for driving air flow in the accommodating space to flow out of the air outlet 11, the air outlet 11 is connected with the installation cylinder 12, the second impeller assembly 4 is arranged in the installation cylinder 12, the outer peripheral wall of the installation cylinder 12 is connected with a plurality of air outlet pipes 13, the plurality of air outlet pipes 13 are spaced along the circumferential direction of the installation cylinder 12, and each air outlet pipe 13 extends along the radial direction of the installation cylinder 12.

A drive mechanism 5 is provided on at least one of the box base 1 and the box cover 2 and is connected to the first impeller assembly 3 and the second impeller assembly 4. The drive mechanism 5 includes a drive motor 51, a drive gear 52, a first transmission mechanism 53, and a second transmission mechanism 54. The driving motor 51 is arranged on the box seat 1, the driving gear 52 is connected with an output shaft of the driving motor 51, the first transmission mechanism 53 is connected with the first impeller assembly 3, and the second transmission mechanism 54 is connected with the second impeller assembly 4.

The first transmission mechanism 53 includes a driving pulley 531, a driven pulley 532, a belt 533, and a first rotation shaft 534. The driving pulley 531 is connected with the driving gear 52 and coaxially rotates, the driven pulley 532 is rotatably provided on the case cover 2, the belt 533 is sleeved on the driving pulley 531 and the driven pulley 532, one end of the first rotation shaft 534 is connected with the driven pulley 532 and synchronously rotates, a part of the first rotation shaft 534 is formed as a worm 5341, and the worm wheel 311 matched with the worm 5341 is connected to the first impeller assembly 3. When the driving motor 51 works, the output shaft of the driving motor 51 rotates to drive the driving gear 52 to rotate, meanwhile, the driving belt pulley 531 is driven to rotate, the driven belt pulley 532 is driven to rotate through the belt 533, at the moment, the first rotating shaft 534 and the driven belt pulley 532 synchronously rotate, the worm 5341 on the first rotating shaft 534 rotates, and the rotation is transmitted to the first impeller assembly 3 through the cooperation of the worm 5341 of the worm wheel 311, so that the first impeller assembly 3 is driven to rotate, the speed of external air entering the accommodating space is accelerated, and the transmission process of the first transmission mechanism 53 is completed.

The first impeller assembly 3 comprises a plurality of first impellers 31, and the plurality of first impellers 31 are arranged at intervals in a plurality of rows, so that uniform heat dissipation of the battery module is facilitated, and the heat dissipation efficiency is improved. Each first impeller 31 is connected with a worm wheel 311, the driven belt wheel 532, the belt 533 and the first rotating shaft 534 are multiple corresponding to the multiple rows of first impellers 31 one by one, each first rotating shaft 534 is provided with multiple worms 5341, and the multiple worms 5341 are respectively matched with the worm wheels 311 on the multiple impellers in the corresponding rows. It is understood that the plurality of first impellers 31 in each row are matched with the corresponding first rotating shafts 534 to form worm gears 311 and 5341, and the plurality of worm gears 5341 are arranged on the corresponding first rotating shaft 534, so that the arrangement number of the driven pulleys 532, the belts 533 and the first rotating shafts 534 can be reduced, the space occupied by the driving mechanism 5 is reduced, and the structural layout of the battery box 100 is optimized.

The second transmission mechanism 54 includes a driven gear 541, a second rotation shaft 542, a first helical gear 543, and a second helical gear 544. The driven gear 541 is disposed on the box base 1 and meshed with the driving gear 52, one end of the second rotating shaft 542 is connected to the driven gear 541 and rotates synchronously, the first bevel gear 543 is connected to the other end of the second rotating shaft 542, and the second bevel gear 544 is connected to the second impeller assembly 4 and cooperates with the first bevel gear 543. When the driving motor 51 operates, the output shaft of the driving motor 51 rotates to drive the driving gear 52 to rotate, and the driven gear 541 meshed with the driving gear 52 rotates to drive the second rotating shaft 542 rotating synchronously with the driven gear 541. The first bevel gear 543 located at the other end of the second rotating shaft 542 rotates along with the rotation of the second rotating shaft 542, and drives the second bevel gear 544 matched with the first bevel gear 543 to rotate, so that the second impeller assembly 4 rotates, the second impeller assembly 4 generates downward suction force, heat outflow is accelerated, and the transmission process of the second transmission structure is completed.

The driving gear 52 and the driving belt pulley 531 are both arranged on the output shaft of the driving motor 51, the driving motor 51 rotates along with the driving gear 52 and the driving belt pulley 531, the first transmission structure and the second transmission structure can be driven simultaneously, the transmission effect of the first transmission structure and the second transmission structure is utilized, external cold air enters the box cover 2 along the air inlet 21 and uniformly acts on different battery modules, and finally, heat is rapidly discharged out of the box seat 1 along the air outlet 11 at the bottom of the box seat 1 by utilizing the action of the second transmission structure, so that the circulation is formed, the overall heat dissipation effect is improved, and the box seat is simple in structure and convenient to operate.

The communication member 6 includes a communication pipe 61 and a gas collecting hood 62, one end of the communication pipe 61 communicates with the intake port 21, and the gas collecting hood 62 is provided at the other end of the communication pipe 61.

The partition 7 is provided in the accommodation space to divide the accommodation space into a plurality of subspaces, a cavity 71 is formed in the partition 7, a vent hole 72 communicating with the cavity 71 is formed on a surface of the partition 7 facing the subspace, and a connection hole 73 is formed at the top of the partition 7.

A battery pack according to an embodiment of the present utility model is described below.

The battery pack according to the embodiment of the utility model comprises the battery module and the battery box 100, wherein the battery module is arranged in the accommodating space.

According to the battery pack disclosed by the embodiment of the utility model, the box cover 2 is connected with the box seat 1 and jointly defines the accommodating space, the accommodating space is internally used for accommodating the battery module, the driving mechanism 5 drives the first impeller assembly 3 and the second impeller assembly 4, the first impeller assembly 3 drives air flow to enter the accommodating space from the air inlet 21 positioned at the top of the box cover 2 and takes away heat in the accommodating space, and the second impeller assembly 4 drives the air flow to flow out from the air outlet 11 positioned at the bottom of the box seat 1 and simultaneously takes away heat of the battery module, so that heat dissipation of the battery module is realized, and the heat of the battery module is fully dissipated in the circulation of the air flow, so that the safety of the battery pack is higher.

A vehicle according to an embodiment of the utility model is described below.

The vehicle according to the embodiment of the utility model comprises the battery pack.

According to the vehicle provided by the embodiment of the utility model, the box cover 2 is connected with the box seat 1 and jointly defines the accommodating space, the accommodating space is internally used for accommodating the battery module, the driving mechanism 5 drives the first impeller assembly 3 and the second impeller assembly 4, the first impeller assembly 3 drives air flow to enter the accommodating space from the air inlet 21 positioned at the top of the box cover 2 and takes away heat in the accommodating space, and the second impeller assembly 4 drives the air flow to flow out from the air outlet 11 positioned at the bottom of the box seat 1 and simultaneously takes away the heat of the battery module, so that the heat of the battery module is fully dissipated in the circulation of the air flow, the safety of the battery pack is higher, and the discharging process of the battery module in the running process of the vehicle is more reliable.

The battery case 100 and the operation according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A battery box, comprising:

the bottom of the box seat is provided with an air outlet, and the air outlet is connected with a mounting cylinder;

the box cover is connected with the box seat and jointly defines an accommodating space, and the top of the box cover is provided with an air inlet;

the first impeller assembly is arranged on the box cover and positioned in the accommodating space and used for driving air flow to enter the accommodating space from the air inlet;

the second impeller assembly is arranged on the box seat and positioned at the air outlet for driving air flow in the accommodating space to flow out of the air outlet, the second impeller assembly is arranged in the mounting cylinder, a plurality of air outlet pipes are connected to the peripheral wall of the mounting cylinder, the air outlet pipes are spaced along the circumferential direction of the mounting cylinder, and each air outlet pipe extends along the radial direction of the mounting cylinder;

the driving mechanism is arranged on at least one of the box seat and the box cover and is connected with the first impeller assembly and the second impeller assembly.

2. The battery box of claim 1, wherein the first impeller assembly comprises a plurality of spaced apart first impellers, each of the plurality of first impellers being rotatably disposed on the box cover, and the drive mechanism is configured to drive the plurality of first impellers to rotate.

3. The battery box according to claim 2, wherein the inner surface of the box cover has a plurality of mounting grooves protruding in a direction away from the box base, and the plurality of first impellers are respectively provided in the plurality of mounting grooves.

4. A battery box according to claim 3, wherein a first connecting chamber is formed in the top of the box cover, a plurality of the mounting grooves are all communicated with the first connecting chamber, and the air inlet is communicated with the first connecting chamber.

5. The battery box of claim 1, further comprising:

the communicating piece comprises a communicating pipe and a gas collecting cover, one end of the communicating pipe is communicated with the gas inlet, and the gas collecting cover is arranged at the other end of the communicating pipe.

6. The battery box of claim 1, further comprising:

the baffle, the baffle is located in the accommodation space in order to with accommodation space is cut apart into a plurality of subspaces, be formed with the cavity in the baffle, the baffle towards the surface of subspace have with the ventilation hole of cavity intercommunication, the top of baffle is equipped with the connecting hole.

7. The battery box of claim 6, wherein a second connecting cavity is formed in the bottom of the box base, the second connecting cavity being in communication with the receiving space and with the air outlet.

8. The battery box of claim 7, wherein a transition cavity is provided in the bottom of the box base, the transition cavity being located between the separator and the second connection cavity and communicating with the cavity and the second connection cavity.

9. The battery box of claim 1, wherein the drive mechanism comprises:

the driving motor is arranged on the box seat;

the driving gear is connected with an output shaft of the driving motor;

the first transmission mechanism is connected with the first impeller assembly;

and the second transmission mechanism is connected with the second impeller assembly.

10. The battery compartment of claim 9, wherein the first transmission mechanism comprises:

the driving belt pulley is connected with the driving gear and coaxially rotates;

the driven pulley is rotatably arranged on the box cover;

the belt is sleeved on the driving belt pulley and the driven belt pulley;

the first rotating shaft, one end of the first rotating shaft with the driven belt pulley is connected and rotates synchronously, a part of the first rotating shaft is formed into a worm, and the first impeller assembly is connected with a worm wheel matched with the worm.

11. The battery box according to claim 10, wherein the first impeller assembly comprises a plurality of first impellers, the plurality of first impellers are arranged at intervals in a plurality of rows, each first impeller is connected with a worm wheel, the driven pulleys, the belts and the first rotating shafts are in one-to-one correspondence with the plurality of rows of first impellers, a plurality of worm shafts are arranged on each first rotating shaft, and the worm shafts are respectively matched with the worm wheels on the impellers of the corresponding rows.

12. The battery compartment of claim 9, wherein the second transmission mechanism comprises:

the driven gear is arranged on the box seat and meshed with the driving gear;

one end of the second rotating shaft is connected with the driven gear and synchronously rotates;

the first bevel gear is connected with the other end of the second rotating shaft;

and the second bevel gear is connected with the second impeller assembly and matched with the first bevel gear.

13. A battery pack, comprising:

the battery box according to any one of claims 1 to 12;

and the battery module is arranged in the accommodating space.

14. A vehicle comprising the battery pack according to claim 13.