Charging cabinet with air internal circulation

Abstract

The utility model discloses a charging cabinet with air internal circulation. The charging cabinet comprises a shell, a plurality of battery pack assemblies, a hot air pipeline and an air conditioning device, the battery pack assembly and the hot air pipeline are both arranged in the shell, the air conditioner device is installed outside the shell, and a first air inlet and a first air outlet of the air conditioner device face the interior of the shell. A first ventilation hole and a second ventilation hole are formed in the positions, corresponding to the first air inlet and the first air outlet, of the shell correspondingly. The hot air pipeline is provided with a second air inlet and a second air outlet, the second air outlet directly faces the second ventilation hole, and the second air inlet faces the interior of the shell; the air conditioner blows cold air into the shell from the first air inlet, and hot air in the shell enters the hot air pipeline from the second air inlet of the hot air pipeline and then flows into the air conditioner through the second air outlet and the second ventilation hole, so that the temperature in the shell is more balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging cabinets, and in particular to a charging cabinet with internal air circulation. Background Art

[0002] The charging cabinets on the market have multiple battery pack assemblies inside. When the entire charging cabinet is charging the internal battery pack assemblies, the battery pack assemblies will generate a lot of heat, so the temperature of the battery pack assemblies is relatively high. If the temperature of the battery pack assemblies is high, it will affect the charging effect of the battery pack, etc., and there are many battery pack assemblies in the charging cabinet. The temperature difference between different battery pack assemblies in the charging cabinet is large, which will also affect the charging. When the existing charging cabinet charges the internal battery pack, it will stop charging all the battery pack assemblies when it monitors that any battery pack assembly is fully charged. The charging efficiency of battery pack assemblies with higher temperatures is low. Therefore, after the battery pack assembly with lower temperature is fully charged, it stops storing energy for other battery pack assemblies, which affects the utilization rate of the entire charging cabinet.

[0003] Therefore, it is necessary to reduce the temperature difference of the battery pack components at different positions inside the charging cabinet to improve the performance of the charging cabinet. Utility Model Content

[0004] The utility model provides a charging cabinet with internal air circulation, aiming to solve the above problems.

[0005] A charging cabinet with internal air circulation provided according to an embodiment of the present application comprises: a shell, a plurality of battery pack assemblies, a hot air duct and an air conditioning device; the battery pack assemblies and the hot air duct are both arranged in the shell, the air conditioning device is installed on the outside of the shell, and a first air inlet and a first air outlet of the air conditioning device are arranged toward the inside of the shell, and a first ventilation hole and a second ventilation hole are respectively arranged at positions of the shell corresponding to the first air inlet and the first air outlet; the hot air duct has a second air inlet and a second air outlet, the second air outlet is arranged directly opposite to the second ventilation hole, and the second air inlet is arranged toward the inside of the shell;

[0006] The air conditioner blows cold air into the shell from the first air inlet, and the hot air inside the shell enters the hot air duct from the second air inlet of the hot air duct, and then flows into the air conditioner through the second air outlet and the second vent, making the temperature inside the shell more balanced.

[0007] In the charging cabinet with internal air circulation of the utility model, the first ventilation hole is arranged above the second ventilation hole, and the first ventilation hole is arranged close to the upper end of the shell.

[0008] In the charging cabinet with internal air circulation of the utility model, it also includes a cold air duct, which extends from the position of the second ventilation hole to the lower end of the shell; a cold air inlet is provided at the position where the cold air duct is connected to the second ventilation hole, and at least one cold air outlet is provided at the position of the cold air duct away from the second ventilation hole.

[0009] In the charging cabinet with internal air circulation of the utility model, the cold air duct includes a main duct and a plurality of connected auxiliary ducts, the cold air outlets are arranged at the ends of the auxiliary ducts, and each of the auxiliary ducts has a cold air outlet.

[0010] In the charging cabinet with internal air circulation of the utility model, the inner cross-sectional area of ​​the main pipeline is not less than the sum of the inner cross-sectional areas of the secondary pipelines.

[0011] In the charging cabinet with internal air circulation of the utility model, there are four sub-pipes, namely a first sub-pipe, a second sub-pipe, a third sub-pipe and a fourth sub-pipe. The first sub-pipe and the second sub-pipe are arranged on one side of the main pipe, and the third sub-pipe and the fourth sub-pipe are arranged on the other side of the main pipe.

[0012] In the charging cabinet with internal air circulation of the utility model, the first sub-duct extends from the lower end of the main duct to the side close to the air guide cavity, and the second sub-duct extends from the lower end of the main duct to the side away from the air guide cavity.

[0013] In the charging cabinet with internal air circulation of the utility model, the shape of the hot air duct is L-shaped, which includes a horizontal wall and a vertical wall connected to each other. The second air inlet is arranged at one end of the horizontal wall away from the vertical wall, and the second air outlet is arranged on the vertical wall.

[0014] In the charging cabinet with internal air circulation of the utility model, a plurality of battery pack assemblies are stacked inside the shell.

[0015] In the charging cabinet with internal air circulation of the utility model, the battery pack assembly includes a fan, a shell and a battery cell, the fan and the battery cell are arranged in the shell, the shell includes a plurality of ventilation holes, and the fan is used to blow the heat in the shell out of the outside of the shell through the ventilation holes.

[0016] The technical solution provided by the embodiments of the present application may include the following beneficial effects: The present application designs a charging cabinet with internal air circulation to reduce the temperature difference of battery pack assemblies at different positions inside the charging cabinet to improve the performance of the charging cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a partial structural schematic diagram of a charging cabinet with internal air circulation according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of a charging cabinet with internal air circulation according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the

[0021] Figure 4 This is a schematic diagram of the structure of the cold air duct of an embodiment of the utility model;

[0022] Figure 5 It is a schematic structural diagram of a battery pack assembly according to an embodiment of the utility model;

[0023] Figure 6 A schematic diagram of a portion of the structure of a battery pack assembly according to an embodiment of the present invention.

[0024] Description of the label:

[0025] 10. Shell; 11. First ventilation hole; 12. Second ventilation hole; 13. Rear side wall; 14. Front side wall; 20. Battery pack assembly; 21. Fan; 22. Shell; 23. Battery unit; 30. Hot air duct; 31. Hot air inlet; 32. Hot air outlet; 33. Horizontal wall; 34. Vertical wall; 40. Air conditioning device; 41. First air inlet; 42. First air outlet; 50. Cold air duct; 51. Cold air inlet; 52. Cold air outlet; 53. Main duct; 54. Auxiliary duct; 541. First auxiliary duct; 542. Second auxiliary duct; 543. Third auxiliary duct; 544. Fourth auxiliary duct. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0028] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0029] Please refer to Figure 1-Figure 6 As shown, the utility model discloses a charging cabinet with air internal circulation, including a shell 10, a battery pack assembly 20, a hot air duct 30 and an air conditioning device 40, and the number of the battery pack assembly 20 is set to multiple. The battery pack assembly 20 is stacked inside the shell 10, and the shell 10 protects the battery pack assembly 20 inside. The air conditioning device 40 is installed outside the shell 10, and the air conditioning device 40 includes a first air inlet 41 and a first air outlet 42, and the first air inlet 41 and the first air outlet 42 are arranged toward the inside of the shell 10. The shell 10 is provided with a first ventilation hole 11 at a position corresponding to the first air inlet 41, and the shell 10 is provided with a second ventilation hole 12 at a position corresponding to the first air outlet 42, and the number of the first ventilation hole 11 and the second ventilation hole 12 can be set to multiple. The hot air duct 30 has a hot air inlet 31 and a hot air outlet 32, and the hot air outlet 32 ​​is arranged opposite to the second ventilation hole 12, and the hot air inlet 31 is arranged toward the inside of the shell 10.

[0030] The principle of this device is as follows: the first air outlet 42 of the air-conditioning device 40 blows out cold air, and the cold air enters the second ventilation hole 12 from the first air outlet 42, and then enters the shell 10 to push the hot air inside the shell 10, and the hot air is sent to the hot air duct 30 through the hot air inlet 31 of the hot air duct 30, and then sent out through the hot air outlet 32 ​​of the hot air duct 30, and finally sent back to the air-conditioning device 40 through the first air inlet 41 on the shell 10. The air-conditioning device 40 cools down the incoming hot air, and then blows out cold air from the first air outlet 42. In this way, the heat inside the shell 10 of the charging cabinet is circulated and cooled to ensure that the temperature difference inside the shell 10 is low, thereby ensuring the good operation of the entire charging cabinet.

[0031] In this embodiment, the number of battery pack assemblies 20 is set according to actual needs, and several battery pack assemblies 20 are stacked, and the battery pack assemblies 20 can be stacked in multiple columns, and a spacing is set between each column, so that the entire layout is more compact.

[0032] When the efficiency of one air conditioning device 40 is not enough, more air conditioning devices 40 and hot air ducts 30 can be installed, and each hot air duct 30 is installed corresponding to an air conditioning device 40, so as to ensure that the temperature difference at different positions in the entire charging cabinet is small, thereby ensuring the charging efficiency of the entire charging cabinet. Figure 1 As shown, the battery pack assemblies 20 are stacked in two rows, and the number of hot air ducts 30 and the number of air conditioning devices 40 are both set to two.

[0033] The battery pack assembly 20 includes a fan 21, a shell 22 and a plurality of battery cells 23, and the fan 21 and the battery cells 23 are both arranged in the shell 22. The shell 22 includes a plurality of ventilation holes 221, and the fan 21 is used to blow out the heat in the shell 22 from the ventilation holes 221. The heat of the entire device comes from each battery cell 23, and each battery pack assembly 20 is provided with a plurality of battery cells 23. Therefore, the heat inside the battery pack assembly 20 needs to be released to the outside of the battery pack assembly 20 first (that is, the heat is transferred from the battery pack assembly 20 to the shell 10 of the charging cabinet), and then the heat is sent to the inside of the air conditioning device 40 through the hot air duct 30 by the air conditioning device for cooling.

[0034] The charging cabinet also includes a cold air duct 50, which extends from the position of the second ventilation hole 12 to the lower end of the housing 10. A cold air inlet 51 is provided at the position where the cold air duct 50 connects to the second ventilation hole 12, and at least one cold air outlet 52 is provided on the side of the cold air duct 50 away from the second ventilation hole. The cold air outlet 52 is used for the air conditioning device 40 to transport cold air to the lower end of the housing 10. In this embodiment, the first ventilation hole 11 is provided above the second ventilation hole 12, and the first ventilation hole 11 is provided near the upper end of the housing 10. When in use, the air conditioning device 40 first transports cold air along the cold air duct 50 to the lower space of the shell 10, and then the cold air pushes the hot air in the lower space of the shell 10 to move upward, thereby transporting the hot air through the hot air inlet 31 of the hot air duct 30 to the hot air duct 30, and then along the hot air duct 30, flows through the hot air outlet 32 ​​of the hot air duct 30, and finally passes through the first air inlet 41 on the shell 10, so as to transport the hot air inside the shell 10 from bottom to top to the air conditioning device 40, thereby ensuring that the entire shell 10 is filled with cold air from bottom to top, ensuring the temperature difference of the battery pack assembly 20 at different positions in the shell 10, and then ensuring the good operation of the entire charging cabinet, and improving the energy storage efficiency and utilization rate of the charging cabinet.

[0035] In this embodiment, the cold air duct 50 includes a connected air guide cavity 55, a main duct 53 and a plurality of auxiliary ducts 54, one end of the main duct is connected to the air guide cavity 55, and the other end of the main duct is connected to a plurality of auxiliary ducts. The cold air duct is arranged in the shell of the charging cabinet. Each auxiliary duct has a cold air outlet at the end. The inner cross-sectional area of ​​the main duct 53 is not less than the sum of the inner cross-sectional areas of the auxiliary ducts 54. This structure is used to ensure that each auxiliary duct 54 has a good air outlet to ensure the uniformity of the internal cold air delivery. The number of sub-ducts 54 is set to four, namely the first sub-duct 541, the second sub-duct 542, the third sub-duct 543 and the fourth sub-duct 544. The first sub-duct 541 and the second sub-duct 542 are arranged on one side of the main duct 53, and the third sub-duct 543 and the fourth sub-duct 544 are arranged on the other side of the main duct 53. The direction in which the cold air is delivered is controlled by different sub-ducts, and then the cold air is controlled to evenly push the hot air inside the shell 10 to the hot air duct 30 to ensure that the temperature difference at different positions inside the shell 10 is small.

[0036] The first auxiliary duct 541 extends from the lower end of the main duct 53 to the side close to the air guide cavity (i.e., used to send cold air to the upper space of the shell), and the second auxiliary duct 542 extends from the lower end of the main duct 53 to the side away from the air guide cavity (i.e., used to send cold air to the lower space of the shell). The third auxiliary duct 543 is similar to the first auxiliary duct 541, and extends to the upper part of the shell 10, and the fourth auxiliary duct 544 extends to the lower part of the shell 10. The hot air in the lower space of the shell 10 is blown into the bottom of the shell 10 through the second auxiliary duct 542 and the fourth auxiliary duct 544. Since the cold air duct 50 is arranged on the rear side wall 13 of the shell 10, the hot air at the bottom of the shell 10 will move from the rear side wall of the shell to the front side wall 14 of the shell 10, and then move upward along the front side wall 14 of the shell 10 to the hot air duct 30 located at the upper end of the shell 10. The first sub-duct 541 and the third sub-duct 543 are directly facing the top of the shell 10, so the first sub-duct 541 and the third sub-duct 543 will directly push the hot air near the first sub-duct 541 and the third sub-duct 543 to the top of the shell 10, and then send the hot air here to the hot air duct 30 located above the shell 10. Through the ingenious design of the cold air duct 50 structure, it can be ensured that the hot air inside the entire shell 10 will flow into the hot air duct 30 located at the upper end of the shell 10, and then be sent to the air conditioner along the hot air duct 30 for cooling, further ensuring the temperature difference at all positions inside the shell 10, and ensuring the energy storage efficiency of the battery pack assembly 20 at different positions.

[0037] In this embodiment, the secondary pipe 54 includes an arc-shaped connecting pipe 545 and a straight pipe 546 connected to each other, one end of the arc-shaped connecting pipe is connected to the straight pipe, and the other end of the arc-shaped connecting pipe is connected to the lower end of the main pipe. By providing the arc-shaped connecting pipe, the transition is smooth, so as to ensure that the cold air flows smoothly to the straight pipe, and then the cold air is sent upward and downward.

[0038] The side 551 of the air guide cavity opposite to the main duct is an arc-shaped surface. The cold air blown in from the cold air inlet is smoothly delivered into the main duct under the smooth transition of the arc-shaped surface, so as to ensure that the cold air passes more smoothly into the shell of the charging cabinet.

[0039] In this embodiment, the hot air duct 30 is L-shaped, and includes a horizontal wall 33 and a vertical wall 34 that are connected. The hot air inlet 31 is arranged at one end of the horizontal wall 33 away from the vertical wall 34, that is, the hot air inlet 31 is arranged close to the front side wall 14 of the shell 10, so as to conveniently receive the hot air flowing from the lower space of the shell 10. The vertical wall 34 is attached to the rear side wall 13 of the shell 10, and the hot air outlet 32 ​​is arranged on the vertical wall 34. The hot air flowing in from the hot air inlet 31 flows along the horizontal wall 33 to the vertical wall 34, and then flows from the hot air outlet 32 ​​to the second ventilation hole 12 of the shell 10, and then flows into the air conditioning device 40.

[0040] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A charging cabinet with air internal circulation, It is characterized in that include: A shell, a plurality of battery pack assemblies, a hot air duct and an air conditioning device; the battery pack assembly and the hot air duct are both arranged in the shell, the air conditioning device is installed on the outside of the shell, and a first air inlet and a first air outlet of the air conditioning device are arranged toward the inside of the shell, and a first vent and a second vent are respectively arranged at positions of the shell corresponding to the first air inlet and the first air outlet; the hot air duct has a second air inlet and a second air outlet, the second air outlet is arranged directly opposite to the second vent, and the second air inlet is arranged toward the inside of the shell; The air conditioner blows cold air into the shell from the first air inlet, and the hot air inside the shell enters the hot air duct from the second air inlet of the hot air duct, and then flows into the air conditioner through the second air outlet and the second vent, making the temperature inside the shell more balanced.

2. The charging cabinet with air internal circulation according to claim 1, It is characterized in that The first ventilation hole is arranged above the second ventilation hole, and the first ventilation hole is arranged close to the upper end of the shell.

3. The charging cabinet with air internal circulation according to claim 2, It is characterized in that It also includes a cold air duct, which extends from the position of the second ventilation hole to the lower end of the shell; a cold air inlet is provided at the position where the cold air duct connects to the second ventilation hole, and at least one cold air outlet is provided at the position of the cold air duct away from the second ventilation hole.

4. The charging cabinet with air internal circulation according to claim 3, It is characterized in that The cold air duct includes an interconnected air guide cavity, a main duct and multiple sub-ducts, one end of the main duct is connected to the air guide cavity, and the other end of the main duct is connected to the multiple sub-ducts. The cold air inlet is arranged at the end of the air guide cavity, and a cold air outlet is arranged at the end of each sub-duct.

5. The charging cabinet with air internal circulation according to claim 4, It is characterized in that The inner cross-sectional area of ​​the main pipeline is not less than the sum of the inner cross-sectional areas of the secondary pipelines.

6. The charging cabinet with air internal circulation according to claim 5, It is characterized in that There are four sub-pipelines, namely a first sub-pipeline, a second sub-pipeline, a third sub-pipeline and a fourth sub-pipeline. The first sub-pipeline and the second sub-pipeline are arranged on one side of the main pipe, and the third sub-pipeline and the fourth sub-pipeline are arranged on the other side of the main pipe.

7. The charging cabinet with air internal circulation according to claim 6, It is characterized in that The first sub-pipe extends from the lower end of the main pipe to a side close to the air guiding cavity, and the second sub-pipe extends from the lower end of the main pipe to a side away from the air guiding cavity.

8. The charging cabinet with air internal circulation according to claim 6, It is characterized in that The hot air duct is in an L-shape, comprising a horizontal wall and a vertical wall connected to each other. The second air inlet is arranged at an end of the horizontal wall away from the vertical wall, and the second air outlet is arranged on the vertical wall.

9. The charging cabinet with air internal circulation according to claim 6, It is characterized in that A plurality of battery pack assemblies are stacked inside the shell.

10. The charging cabinet with air internal circulation according to claim 6, It is characterized in that The battery pack assembly includes a fan, a shell and a battery cell. The fan and the battery cell are arranged in the shell. The shell includes a plurality of ventilation holes. The fan is used to blow the heat in the shell out of the shell through the ventilation holes.

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