Battery subrack and electrical cabinet

Abstract

The utility model relates to a battery plug-in box and an electrical cabinet, comprising: a box body structure comprising a lower box body and an upper box body covering the lower box body, the lower box body and the upper box body enclosing to form an accommodating space for accommodating a battery pack; the flow guide mechanism comprises an air duct assembly and an air inlet hole which are formed in the lower box body, a fan embedded in the air inlet hole, a flow guide cover covering the air inlet hole and a plurality of flow dividing hole grids arranged on the flow guide cover, and a flow guide space is defined by the flow guide cover and the lower box body; the flow dividing hole grid is used for communicating the flow guiding space and the containing space, and the outlet size of the flow dividing hole grid is larger than the inlet size. Through the arrangement, the air resistance in the box body is uniform, and the problem of non-uniform flow caused by disordered flow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery boxes, in particular to a battery plug-in box and an electrical cabinet. Background Art

[0002] The battery plug box is an important unit in the lithium battery energy storage integrated system. Since the battery generates heat during operation, the plug box needs to be effectively ventilated to maintain the temperature inside the plug box within a reasonable range and reduce the risk of thermal runaway of the battery. The traditional air-cooled battery plug box has a fan at the front of the plug box. After the external cold air enters the plug box, it flows disorderly inside the plug box and is then discharged from the ventilation holes on the side and rear of the plug box.

[0003] In the existing battery plug-in box, the cold air flows unevenly inside the plug-in box, and it is very easy for some areas to have a small air volume due to large flow resistance. Therefore, it is urgent to develop a new type of air-cooled battery plug-in box to improve the uniformity of air flow in the battery plug-in box and improve the thermal management level of the air-cooled battery plug-in box. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem in the prior art that the cold air of the battery plug-in box flows unevenly inside the plug-in box, and it is very easy for some areas to have a small air volume due to large flow resistance, thereby providing a battery plug-in box and an electrical cabinet.

[0005] In order to solve the above technical problems, the utility model provides a battery plug box, comprising:

[0006] The box structure comprises: a lower box and an upper box covering the lower box, wherein the lower box and the upper box are enclosed to form a storage space for accommodating a battery pack;

[0007] The air guide mechanism comprises: an air duct assembly and an air inlet respectively opened in the lower box body, a fan embedded in the air inlet, an air guide cover covered on the air inlet, and a plurality of diverter holes arranged on the air guide cover, a air guide space is enclosed between the air guide cover and the lower box body, the diverter holes are used to connect the air guide space and the accommodating space respectively, and the outlet size of the diverter holes is larger than the inlet size.

[0008] In one embodiment of the utility model, the air duct assembly and the air inlet hole constitute an air duct mechanism, and the air duct mechanism is used to connect the outside world and the accommodating space. The air duct assembly includes: first ventilation holes respectively opened on the two side walls along the width direction of the lower box body, and second ventilation holes opened on the side wall opposite to the air inlet hole along the length direction of the lower box body.

[0009] In one embodiment of the present invention, the first ventilation holes and the second ventilation holes each include a plurality of ventilation hole groups, and at least one first ventilation hole group is provided between each two adjacent battery packs to be placed.

[0010] In one embodiment of the utility model, the air deflector includes: a cover body arranged around the air inlet hole, a fitting portion arranged on the peripheral side of the cover body opening and extending outward, the extension direction of the fitting portion is parallel to the plane direction of the side wall where the air inlet hole is located, and the fitting portion and the side wall where the air inlet hole is located are sealed and fitted.

[0011] In an embodiment of the present invention, the extending direction of the hole grid is parallel to the arrangement direction of the ventilation hole groups of the second ventilation holes.

[0012] In one embodiment of the utility model, the ventilation hole group is composed of any one of a plurality of oblong holes, elliptical holes, rectangular holes or circular holes, and the extension direction of the oblong holes, elliptical holes or rectangular holes is the same as the extension direction of the side wall of the lower box where they are located.

[0013] In one embodiment of the present invention, the ventilation hole group is arranged in an equidistant array of any one of oblong holes, elliptical holes, rectangular holes or circular holes on the side wall of the lower box body.

[0014] In an embodiment of the utility model, the fan is further provided with a dustproof net, and the dustproof net is arranged on a side of the fan away from the flow guide space.

[0015] In one embodiment of the utility model, the battery plug box is also provided with a main interface and a handle, and the main interface includes a main negative interface and a main positive interface, which are respectively used to connect to the positive electrode and the negative electrode of the battery pack to be accommodated.

[0016] The utility model also discloses an electrical cabinet, comprising a battery plug box as described above in the claims, and also comprising a cabinet body, wherein one or more battery plug boxes are arranged in the cabinet body.

[0017] The above technical solution of the utility model has the following advantages compared with the prior art:

[0018] The utility model discloses a battery plug box, wherein the ventilation holes are provided on the lower box body for discharging the heat in the box body; the air inlet holes are used for introducing the external air, and the fan is provided for pushing the air into the flow guide space, and the air flow is guided by the flow guide cover, and the flow divider grid provided on the flow guide cover is provided, so that the cold air entering the plug box can flow through the battery plug box evenly, and the outlet size is larger than the inlet size to form an outward expansion shape, which can increase the air coverage area flowing through the fairing, and the heat in the box body is discharged through the multiple ventilation holes, so as to form an effective heat dissipation cycle, and the air resistance in the box body is uniform, so as to improve the heat dissipation efficiency, and avoid the problem of uneven flow caused by disordered flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0020] Figure 1 It is a structural schematic diagram of the battery plug box of the utility model;

[0021] Figure 2 It is an exploded view of the battery plug box of the utility model;

[0022] Figure 3 It is a schematic diagram of the positions of the upper box body and the lower box body of the utility model;

[0023] Figure 4 This utility model Figure 2 The enlarged view of point A in the middle;

[0024] Figure 5 This utility model Figure 3 The enlarged view of point B in the middle;

[0025] Figure 6 It is a cross-sectional view of the air deflector of the utility model;

[0026] Figure 7 It is a three-dimensional diagram of the air deflector of the utility model.

[0027] Explanation of the reference numerals in the specification: 1. lower box body; 2. upper box body; 3. main interface; 4. first ventilation hole; 5. handle; 6. second ventilation hole; 7. hole grille; 8. air guide cover; 9. bend; 10. fan. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0029] Example

[0030] Reference Figure 1-Figure 7 As shown, a battery plug box of the utility model comprises:

[0031] The box structure comprises: a lower box 1, and an upper box 2 covering the lower box 1, wherein the lower box 1 and the upper box 2 enclose a storage space for accommodating a battery pack;

[0032] The air guide mechanism comprises: an air duct assembly and an air inlet respectively opened in the lower box body 1, a fan 10 embedded in the air inlet, an air guide cover 8 covered on the air inlet, and a plurality of diverter holes 7 arranged on the air guide cover 8, a air guide space is enclosed between the air guide cover 8 and the lower box body 1, the diverter holes 7 are used to connect the air guide space and the accommodating space respectively, and the outlet size of the diverter holes 7 is larger than the inlet size.

[0033] In a battery plug box described in the utility model, the air duct assembly provided on the lower box body 1 is used to connect the accommodating space with the outside and discharge heat-dissipating air. The air inlet hole is used to introduce the external air. The fan 10 is used to push the air into the guide space and cooperate with the guide cover 8 to guide the air flow so that the air flows evenly through the battery plug box. The diverter hole grid 7 is provided, and the outlet size is larger than the inlet size to form an outward expansion shape, so that the air coverage area flowing through the fairing can be increased. The heat in the box body is discharged through multiple ventilation holes to form an effective heat dissipation cycle, thereby avoiding the problem of uneven flow caused by disordered flow.

[0034] Reference Figure 1-Figure 3 As shown, the air duct assembly and the air inlet hole constitute an air duct mechanism, and the air duct mechanism is used to connect the outside world and the accommodating space. The air duct assembly includes: first ventilation holes 4 respectively opened on the two side walls of the lower box body 1 along the width direction, and second ventilation holes 6 opened on the side wall opposite to the air inlet hole along the length direction of the lower box body 1. The air duct mechanism shortens the air flow path and improves the heat dissipation efficiency. The first ventilation holes 4 and the second ventilation holes 6 are opened along the width direction and the length direction of the lower box body 1, so that air can be discharged from the box body from multiple directions.

[0035] Reference Figure 2-Figure 5 As shown, the first ventilation holes 4 and the second ventilation holes 6 each include a plurality of ventilation hole groups, and at least one first ventilation hole 4 is provided between each two adjacent battery packs to be placed, so that each battery pack can obtain sufficient air circulation.

[0036] Reference Figure 2 As shown, the upper box body 2 is provided with a bend 9 edging, and covers the outer peripheral side of the lower box body 1 to form a closed structure. The bottom walls of the upper box body 2 and the lower box body 1 correspond to each other, and the bottom wall of the lower box body 1 may be provided with a mounting assembly for fixing the battery pack, such as a fixed beam, a battery fixing frame or a battery bracket, which is used to prevent the battery pack from moving or loosening during transportation or use, and fix the battery pack in a specific position to prevent contact between the battery packs and avoid short circuits. The battery packs are fixed by snap-on, screw-fixed or rail-fixed methods so that the spacing and arrangement direction of the battery packs correspond to the air duct.

[0037] Reference Figure 6-Figure 7As shown, the air deflector 8 includes: a cover body arranged around the air inlet, a fitting portion arranged on the peripheral side of the cover body opening and extending outward, the extension direction of the fitting portion is parallel to the plane direction of the side wall where the air inlet is located, and the fitting portion and the side wall where the air inlet is located are sealed and fitted, and the fitting portion and the side wall where the air inlet is located are sealed and fitted to prevent dust from being sucked in. Correspondingly, a dustproof net is provided on the side of the fan 10 to filter dust from the air entering the plug-in box.

[0038] Reference Figure 1-Figure 3 As shown, the extension direction of the hole grid 7 is parallel to the arrangement direction of the ventilation hole group of the second ventilation hole 6, so that the second ventilation hole 6 and the air inlet hole correspond to each other, and the air passing through the air inlet hole can be discharged from the second ventilation hole 6 to the maximum extent after carrying heat. The hole grid 7 is composed of an enclosed raised wall protruding from the surface of the air deflector 8, and the raised wall extends in the direction of the accommodating space.

[0039] The ventilation hole group is composed of any one of a plurality of oblong holes, elliptical holes, rectangular holes or circular holes, and the size is determined according to the size of the battery pack and the heat dissipation requirements. The ventilation hole groups can be arranged at equal intervals or at unequal intervals. In this embodiment, the oblong holes are arranged at equal intervals, that is, waist-shaped holes similar to the shape of a runway, and the extension direction of the oblong holes, elliptical holes or rectangular holes is the same as the extension direction of the side wall of the lower box body 1 where they are located.

[0040] The ventilation hole group is arranged on the side wall of the lower box body 1 in an equidistant array of any one of oblong holes, elliptical holes, rectangular holes or circular holes. In the present embodiment, the oblong holes can be arranged more densely, reducing the spacing between the holes, while ensuring the lightness of the structure of the side wall of the box body. The ventilation holes are arranged on the side wall of the lower box body 1 in an array of any one of oblong holes, elliptical holes, rectangular holes or circular holes. In order to increase the heat dissipation efficiency, the lower box body 1 is supported by a metal material, such as aluminum and its alloys, iron and its alloys with a surface covered with an anti-rust layer, copper and its alloys, and the thickness is between 0.5mm-2mm. While ensuring the structural strength, the wall of the lower box body 1 itself can also provide heat conduction and heat dissipation.

[0041] The fan 10 is also provided with a dustproof net, which is provided on a side of the fan 10 away from the guide space. When the fan 10 is started, external air enters the fan 10 through the dustproof net and is then blown into the guide space by the fan 10. The dustproof net can effectively prevent external dust from entering the fan 10, avoiding dust accumulation that reduces ventilation efficiency or dust accumulation in the battery pack that reduces heat dissipation efficiency or even short circuits.

[0042] Reference Figure 1-Figure 2As shown, the battery plug box is also provided with a main interface 3 and a handle 5. The main interface 3 includes a main negative interface and a main positive interface, which are respectively used to connect to the positive electrode and the negative electrode of the battery pack to be accommodated. The battery plug box can be conveniently connected to the battery pack and provide a unified interface to facilitate the connection between the external circuit and the internal battery pack without disassembling the box body for circuit connection.

[0043] Embodiment 2

[0044] An electrical cabinet of the utility model further comprises a cabinet body, in which one or more battery plug-in boxes described in Embodiment 1 are arranged.

[0045] The electrical cabinet described in this embodiment integrates a battery plug-in box into the interior, thereby providing a safe and efficient storage and management environment for the battery pack, providing dustproof, waterproof, moisture-proof and other functions, and providing the addition of other functional modules, such as a monitoring system, an alarm system, etc., so that it can be applied to various fields, such as power systems, communication systems, transportation systems, disaster prevention and relief systems, etc.

[0046] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A battery box, characterized in that: include: The box structure comprises: a lower box and an upper box covering the lower box, wherein the lower box and the upper box are enclosed to form a storage space for accommodating a battery pack; The air guide mechanism comprises: an air duct assembly and an air inlet respectively opened in the lower box body, a fan embedded in the air inlet, an air guide cover covered on the air inlet, and a plurality of diverter holes arranged on the air guide cover, a air guide space is enclosed between the air guide cover and the lower box body, the diverter holes are used to connect the air guide space and the accommodating space respectively, and the outlet size of the diverter holes is larger than the inlet size.

2. A battery plug box according to claim 1, characterized in that: The air duct assembly and the air inlet hole constitute an air duct mechanism, and the air duct mechanism is used to connect the outside world and the accommodating space. The air duct assembly includes: first ventilation holes respectively opened on the two side walls of the lower box along the width direction of the lower box, and second ventilation holes opened on the side wall opposite to the air inlet hole along the length direction of the lower box.

3. A battery plug box according to claim 2, characterized in that: The first ventilation holes and the second ventilation holes each include a plurality of ventilation hole groups, and at least one first ventilation hole group is disposed between each two adjacent battery packs to be placed.

4. A battery plug box according to claim 1, characterized in that: The air deflector includes: a cover body arranged around the air inlet, and a fitting portion arranged on the peripheral side of the cover body opening and extending outward, wherein the extending direction of the fitting portion is parallel to the plane direction of the side wall where the air inlet is located, and the fitting portion and the side wall where the air inlet is located are sealed and fitted.

5. A battery plug box according to claim 1, characterized in that: The extending direction of the hole grid is parallel to the arrangement direction of the ventilation hole groups of the second ventilation holes.

6. A battery plug box according to claim 3, characterized in that: The ventilation hole group is composed of any one of a plurality of oblong holes, elliptical holes, rectangular holes or circular holes, and the extension direction of the oblong holes, elliptical holes or rectangular holes is the same as the extension direction of the side wall of the lower box body where the oblong holes, elliptical holes or rectangular holes are located.

7. A battery plug box according to claim 6, characterized in that: The ventilation hole group is arranged in an equidistant array of any one of oblong holes, elliptical holes, rectangular holes or circular holes on the side wall of the lower box body.

8. A battery plug box according to claim 2, characterized in that: The fan is also provided with a dustproof net, and the dustproof net is arranged on a side of the fan away from the flow guide space.

9. A battery plug box according to claim 1, characterized in that: The battery plug box is also provided with a main interface and a handle, wherein the main interface comprises a main negative interface and a main positive interface, which are respectively used to connect to the positive electrode and the negative electrode of the battery pack to be accommodated.

10. An electrical cabinet, characterized in that: It comprises a battery plug box as claimed in any one of claims 1 to 9, and also comprises a cabinet, wherein one or more battery plug boxes are arranged in the cabinet.

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