CN217824314U - Power supply device - Google Patents

Abstract

The utility model relates to a power supply unit technical field provides a power supply unit, including contravariant module, battery package, contravariant module support and casing. The inversion module is positioned above the battery pack; the inverter module support comprises a first strip and a second strip which are used for supporting the inverter module, the first strip and the second strip are arranged between the inverter module and the battery pack, and the first strip and the second strip are arranged at intervals; the inversion module, the inversion module bracket and the battery pack are contained in the shell; wherein, the first lath and the second lath are both formed with the crimping structure along the length direction thereof. The space vacated between first lath and the second lath satisfies other installation needs and by make full use of to avoided leading to the space between parts such as contravariant module and battery package to be unable the utilization because of contravariant module support is the whole board. The anti intensity of buckling of first lath and second lath on length direction can be improved to the turn-up structure, further improves the support intensity to the contravariant module.

Description

Power supply device

Technical Field

The utility model relates to a power supply unit technical field especially provides a power supply unit.

Background

In the field of energy storage power supply, an inverter module is one of important components, and the inverter module is used for realizing conversion of alternating current and direct current.

In the actual installation process of the energy storage battery, the inverter module is fixed above the battery pack through the supporting partition plate. However, the existing supporting partition plate is mostly a whole plate, so that the space between the inverter module and the battery pack is wasted, and the miniaturization design of the energy storage power supply is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power supply unit, aim at solving among the current power supply unit, the unable problem of utilizing the space waste that leads to in the space between contravariant module and the battery package.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a power supply unit, include:

an inversion module;

the battery pack is provided with the inverter module, and the inverter module is positioned above the battery pack;

the inverter module support comprises a first strip and a second strip which are used for supporting the inverter module, the first strip and the second strip are arranged between the inverter module and the battery pack, and the first strip and the second strip are arranged at intervals;

the inverter module, the inverter module bracket and the battery are contained in the shell;

wherein the first strip and the second strip are formed with a crimping structure along the length direction of the first strip and the second strip.

The utility model has the advantages that: the utility model discloses a power supply unit utilizes contravariant module support to set up between contravariant module and the battery package for form the support between contravariant module and the battery package. Specifically, the contravariant module support includes first lath and second lath, and this first lath and second lath interval set up, like this, the space that vacates between first lath and the second lath satisfies other installation needs and by make full use of to avoided leading to the unable utilization in space between parts such as contravariant module and battery package for whole board because of the contravariant module support. Simultaneously, first lath and second lath all are formed with the turn-up structure along self length direction, and the turn-up structure can improve first lath and second lath at the ascending anti intensity of buckling of length direction, further improves the support intensity to the contravariant module.

In one embodiment, the hemming structure is a rib folded downward from a long side of the first panel or a long side of the second panel.

In one embodiment, the first and second slats are provided with support posts for supporting the inverter module.

In one embodiment, the battery pack includes:

a cell having a positive terminal and a negative terminal;

the battery pack shell contains the battery core, the positive electrode end and the negative electrode end protrude out of the battery pack shell, and two containing grooves are formed in the battery pack shell;

the battery management module is positioned outside the battery pack body and provided with a first end and a second end, and the first end and the second end are respectively positioned above one accommodating groove;

the two fixing pieces are respectively arranged in the accommodating groove and can move in the depth direction of the accommodating groove;

and the two connecting pieces are respectively matched with the fixing piece and used for enabling the fixing piece to move in the depth direction of the accommodating groove so as to respectively abut against and push the positive pole end and the negative pole end, so that the positive pole end is contacted with the first end, and the negative pole end is contacted with the second end.

In one embodiment, the fixing member is a nut, the connecting member is a bolt engaged with the nut, the positive terminal and the first terminal are disposed on one of the bolts, and the negative terminal and the second terminal are disposed on the other of the bolts.

In one embodiment, an opening penetrating through a wall of the accommodating groove is formed in the wall of the accommodating groove, and the opening is used for accommodating the fixing piece into the accommodating groove.

In one embodiment, the housing includes:

the cover body is used for covering the inversion module and forming an accommodating space with the inversion module;

the shell body is contained in the battery pack and the inverter module bracket, and the inverter module protrudes out of the shell body;

the flow distribution plate is arranged on the inner side of the cover body and is used for distributing air flowing into the accommodating space.

In an embodiment, the cover further includes a first air guiding plate and a second air guiding plate both located in the accommodating space, the first air guiding plate is disposed on an inner side of the cover, the heat dissipation hole is located between two adjacent first air guiding plates, the second air guiding plate is connected to one end of the first air guiding plate, which is far away from the side wall of the cover, and a plane where the second air guiding plate is located and a plane where the first air guiding plate is located form an included angle.

In one embodiment, the cover body further comprises a dust-proof piece, a threaded hole is formed in the outer side of the end face of the cover body, and the dust-proof piece is arranged on the cover body in a covering mode and used for blocking the threaded hole.

In one embodiment, the case body includes:

a plurality of insert grooves, each of which is formed at the bottom of the case body;

the foot seats are provided with extending edges corresponding to the outline of the edge of the embedding groove, and the extending edges can be fixedly embedded in the embedding groove so as to connect the foot seats with the shell body;

the anti-warping edge strip is arranged on the edge end face of the extending edge and one of the groove side walls of the embedded groove, and the other one of the edge end face and the groove side wall of the embedded groove is correspondingly provided with the anti-warping edge groove which is matched with the anti-warping edge strip for insertion.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention;

fig. 2 is an exploded view of a power supply device according to an embodiment of the present invention;

fig. 3 is an exploded view of a battery pack and an inverter module of a power supply device according to an embodiment of the present invention;

fig. 4 is an exploded view of an inverter module and an inverter module bracket of a power supply device according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first slat of an inverter module bracket of a power supply device according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a second slat of an inverter module bracket of a power supply device according to an embodiment of the present invention;

fig. 7 is an exploded view of a battery pack of a power supply device according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a battery pack of a power supply device according to an embodiment of the present invention;

FIG. 9 is an enlarged view taken at A in FIG. 8;

fig. 10 is a schematic structural view of a battery pack case of a battery pack of a power supply device according to an embodiment of the present invention;

FIG. 11 is an enlarged view at B of FIG. 10;

fig. 12 is an exploded view of another angle of the power supply device according to the embodiment of the present invention;

fig. 13 is a schematic structural view of a cover of a housing of a power supply device according to an embodiment of the present invention;

fig. 14 is an exploded view of a cover and a dust-proof member of a housing of a power supply device according to an embodiment of the present invention;

fig. 15 is an exploded view of another angle of the power supply device according to the embodiment of the present invention;

fig. 16 is a schematic structural diagram of a power supply device according to another angle provided by the embodiment of the present invention;

fig. 17 is a schematic structural view of a base of a housing body of a power supply device according to an embodiment of the present invention.

Wherein, in the figures, the various reference numbers:

10-inverter module 11-fan 20-battery pack

21-battery core 22-battery pack shell 23-battery management module

24-fastener 25-connector 21 a-positive terminal

21 b-negative terminal 23 a-first terminal 23 b-second terminal

22 a-accommodating groove 22 b-opening 30-inversion module bracket

31-first strip 32-second strip 33-crimping structure

34-support column 40-shell 41-cover body

42-shell body 43-splitter plate 41 a-radiating hole

44-first air deflector 45-second air deflector 46-dust-proof piece

41 b-threaded hole 42 a-caulking groove 421-foot seat

422-proof warping edge strip

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features being indicated. Thus, a feature defined as "a" or "a second" can explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 6, the present invention provides a power supply device, which includes an inverter module 10, a battery pack 20, an inverter module bracket 30 and a housing 40. The inverter module 10, the inverter module bracket 30 and the battery pack 20 are disposed in the housing 40. The inverter module 10 is located above the battery pack 20, wherein the inverter module 10 and the battery pack 20 are disposed along a height direction of the housing 40 and are stacked up and down, and the inverter module bracket 30 is disposed between the inverter module 10 and the battery pack 20 to support the inverter module 10.

Specifically, the inverter module bracket 30 includes a first strip 31 and a second strip 32 for supporting the inverter module 10, the first strip 31 and the second strip 32 are disposed between the inverter module 10 and the battery pack 20, and the first strip 31 and the second strip 32 are spaced apart from each other. It can be understood that a gap is formed between the first strip 31 and the second strip 32, so that the gap between the inverter module 10 and the battery pack 20 in the height direction of the housing 40 can satisfy the space required for installing other components, for example, components with a high height on the circuit board of the battery pack 20 can be accommodated in the gap, and the space utilization rate in the power supply apparatus is higher than that in the case that the conventional inverter module bracket 30 with a whole-plate structure is not provided with a gap.

Furthermore, the first and second panels 31, 32 are formed with a crimping structure 33 along their length. It can be understood that, when the inverter module bracket 30 is divided into two independent first and second panels 31 and 32, the longitudinal direction of the panels is a direction in which bending is easy to occur, and in order to ensure the structural strength thereof, the hemming structure 33 is formed in the longitudinal direction thereof to prevent the panels from bending and deforming in the longitudinal direction.

For example, the hemming structures 33 may be arranged on the plate body at intervals, for example, structures similar to ribs and rib plates are arranged to extend along the length direction of the plate body, and a certain distance is arranged between the structures of the adjacent ribs and rib plates.

For example, the edge-curling structure 33 may be disposed at an edge position of the plate body, for example, a edge-curling structure is formed at an edge of the plate body.

By way of example, a bead 33 can also be provided on the plate body and at the edge position.

The utility model discloses a power supply unit utilizes contravariant module support 30 to set up between contravariant module 10 and the battery package 20 for form the support between contravariant module 10 and the battery package 20. Specifically, the inverter module support 30 includes a first lath 31 and a second lath 32, and the first lath 31 and the second lath 32 are disposed at an interval, so that the space left between the first lath 31 and the second lath 32 meets the installation requirements of other components and is fully utilized, thereby preventing the space between the inverter module 10 and the battery pack 20 and other components from being unavailable due to the fact that the inverter module support 30 is a whole plate. Meanwhile, the first lath 31 and the second lath 32 are both formed with the hemming structures 33 along the length direction thereof, and the hemming structures 33 can improve the bending strength of the first lath 31 and the second lath 32 in the length direction, thereby further improving the supporting strength of the inverter module 10.

Referring to fig. 5 and 6, in one embodiment, the curling structure 33 is a rib folded downward from the long side of the first strip 31 or the second strip 32. It will be appreciated that the ribs can improve the resistance of the slat to bending in the lengthwise direction. Specifically, at least one of the two long sides of the first strip 31 and the second panel 32 forms a rib. Of course, the rib may be formed continuously along the long sides of the strip, or the rib may be formed intermittently along the long sides of the strip.

Referring to fig. 4, in one embodiment, the first strip 31 and the second strip 32 are provided with a support pillar 34 for supporting the inverter module 10. It is understood that the supporting posts 34 provide a fixing position of the inverter module 10 to the first strip 31 and the second strip 32, that is, the first strip 31 and the second strip 32 are fixed to the inverter module through the supporting posts 34, and specifically, the circuit board of the inverter module 10 is fixed to the supporting posts 34. For example, the connection with the first strip 31 and the second strip 32 may be achieved by screws sequentially penetrating the circuit board of the inverter module 10 and the support posts 34. The supporting posts 33 can provide a space for fixing the first strip 31 and the inverter module 10 and the second strip 32 and the inverter module 10, so that the fixing members such as screws can be conveniently accommodated in a sufficient space, and the fixing members can be stably fixed.

Referring to fig. 7 to fig. 11, in an embodiment, the battery pack 20 includes a battery core 21, a battery pack case 22, a battery management module 23, two fixing members 24, and two connecting members 25. The battery cell 21 has a positive terminal 21a and a negative terminal 21b; the battery pack shell 22 contains the battery core 21, the positive electrode end 21a and the negative electrode end 21b protrude out of the battery pack shell 22, and two containing grooves 22a are formed in the battery pack shell 22; the battery management module 23 is located outside the battery pack 20, and the battery management module 23 has a first end 23a and a second end 23b, where the first end 23a and the second end 23b are respectively located above one accommodating groove 22a; the two fixing pieces 24 are respectively arranged in the accommodating groove 22a and can move in the depth direction of the accommodating groove 22a; the two connecting members 25 are respectively engaged with the fixing member 24, and are used for moving the fixing member 24 in the depth direction of the accommodating groove 22a to respectively push the positive terminal 21a and the negative terminal 21b, so that the positive terminal 21a is contacted with the first terminal 23a, and the negative terminal 21b is contacted with the second terminal 23 b. Understandably, between the positive terminal 21a of the battery cell 21 and the first end 23a of the battery management module 23, and between the negative terminal 21b of the battery cell 21 and the second end 23b of the battery management module 23, there may be external force locking, the connection contact process is smoother, the contact point is firmer, and the connection stability is higher.

For example, the fixing member 24 may be a nut-type structure, and the connecting member 25 may be a screw-type structure, which are connected by a screw to realize that the fixing member 24 moves in the depth direction of the accommodating groove 22a, so as to fix and limit the positive end 21a of the battery pack 20 and the first end 23a of the battery management module 23, and fix and limit the negative end 21b of the battery pack 20 and the second end 23b of the battery management module 23. For example, the nut-like structure moves along the depth direction of the accommodating groove 22a under the driving of the screw-like structure, that is, the distance between the end surface of the nut-like structure and the end surface of the screw-like structure gradually decreases, and a clamping force is formed between the first end 23a of the positive pole end 21a and the first end 23b of the negative pole end 21b and the second end 23b to achieve connection and fixation.

For example, the fixing member 24 may be a screw-type structure, and the connecting member 25 may be a nut-type structure, that is, the arrangement positions of the two are changed, so that the screw-type structure can be moved in the depth direction of the accommodating groove 22a.

Specifically, as shown in fig. 7 and 9, in one embodiment, the fixing member 24 is a nut, the connecting member 25 is a bolt engaged with the nut, the positive terminal 21a and the first terminal 23a are inserted into one bolt, and the negative terminal 21b and the second terminal 23b are inserted into the other bolt. Specifically, the distance between the outer wall of the nut and the receiving groove 22a is slightly smaller than the distance between the outer wall of the nut and the receiving groove 22a, which is not enough for the nut to rotate in the receiving groove 22a, so that the nut can only move in the depth direction of the receiving groove 22a.

Referring to fig. 10 and 11, in an embodiment, a groove wall of the accommodating groove 22a is provided with an opening 22b penetrating through the groove wall, and the opening 22b is used for accommodating the fixing member 24 in the accommodating groove 22a. The opening 22b may be formed on a side wall of the receiving groove 22a so that the fixing member 24 may be mounted through the opening 22b if it is forgotten to be mounted. It is understood that two or three adjacent side walls of the fixing member 24 are received in the opening 22b of the receiving groove 22a, that is, a part of the side walls of the fixing member 24 is matched with the inner wall of the receiving groove 22a at the opening 22b, so as to prevent the fixing member 24 from rotating in the receiving groove 22a.

Referring to fig. 12 to 14, in one embodiment, the housing 40 includes a cover 41, a housing body 42, and a diversion plate 43. The cover 41 and the case body 42 are engaged with each other to form an inner space for accommodating the battery pack 20 and the inverter module 10.

Wherein, two opposite sidewalls of the cover 41 are respectively provided with heat dissipation holes 41a penetrating through the cover 41, the heat dissipation holes 41a are respectively located at two opposite sides of the inverter module 10 and correspond to the fans 11 of the inverter module 10, the cover 41 is used for covering the inverter module 10 and forms an accommodation space with the inverter module 10. It can be understood that the inverter module 10 is likely to generate a large amount of heat during operation, and needs to communicate with the outside to obtain a heat dissipation channel with the aid of the heat dissipation hole 41 a. The case body 42 is used for being contained in the battery pack 20 and the inverter module bracket 30, and the inverter module 10 protrudes out of the case body 42. The flow dividing plate 43 is provided inside the cover 41, and the flow dividing plate 43 is used to divide the air flowing into the accommodating space. Here, usually, under the blowing of the fan 11 of the inverter module 10, the air flow in the accommodating space flows in from the heat dissipation holes 41a of one side arm of the cover body 41, and then flows out from the heat dissipation holes 41a of the opposite side wall of the cover body 41 to dissipate heat of the inverter module 10, however, the heat generation amounts of the components on the inverter module 10 are different, and it is difficult to cool the inverter module 10 as a whole by uniform blowing, and therefore, the air flow entering the accommodating space can be divided by the dividing plate 43, so that more concentrated heat exchange is performed on the area of the inverter module 10 where heat dissipation needs to be increased.

It should be noted that the arrangement position, the arrangement number, and the structural shape of the diversion plate 43 are not limited, so as to be able to divert the airflow entering the accommodating space.

For example, as shown in fig. 13, the dividing plate 43 is composed of two partition plates forming an acute included angle, and the dividing plate 43 is located at one of the heat dissipation holes 41a, so that the air flow entering the accommodating space from the heat dissipation hole 41a is divided to two sides by the two partition plates, so as to continue to dissipate heat from the heating elements of the inverter module 10 located at two opposite sides of the dividing plate 43.

Referring to fig. 13, in an embodiment, the cover 41 further includes a first wind guiding plate 44 and a second wind guiding plate 45 both located in the accommodating space, the first wind guiding plate 44 is disposed on the inner side of the cover 41, the heat dissipation hole 41a is located between two adjacent first wind guiding plates 44, the second wind guiding plate 45 is connected to one end of the first wind guiding plate 44, which is far away from the side wall of the cover 41, and a plane where the second wind guiding plate 45 is located forms an included angle with a plane where the first wind guiding plate 44 is located. It can be understood that the airflow entering the accommodating space through the heat dissipation hole 41a is limited by the two first air guiding plates 44, and only can flow into the accommodating space between the two first air guiding plates 44, so as to increase the airflow velocity at the heat dissipation hole 41 a. And the second air deflector 45 is an extension of the first air deflector 44, and the two form a flaring structure similar to a horn, so that partial areas in the cover body 41 can be blocked, and the probability of turbulent flow in the accommodating space is reduced.

Referring to fig. 14, in an embodiment, the cover 41 further includes a dust-proof member 46, a threaded hole is formed on an outer side of an end surface of the cover 41, and the dust-proof member 46 is disposed on the cover 41 and blocks the threaded hole. It can be understood that, the cover 41 and the housing body 42 are connected by screws, and threaded holes need to be opened from the top of the cover 41, so that the screws penetrate through the cover 41 from the top of the cover 41 and then connect with the housing body 42, and therefore, a dust-proof member 46 needs to be provided to block each threaded hole to prevent dust from falling into the threaded holes.

Referring to fig. 15 to 17, in an embodiment, the shell body 42 includes a plurality of slots 42a, a plurality of bases 421 and anti-warping strips 422. Wherein, each caulking groove 42a is formed at the bottom of the case body 42; the foot seat 421 has an extension edge corresponding to the contour of the edge of the embedding groove 42a, and the extension edge can be fixedly embedded in the embedding groove 42a, so that the foot seat 421 is connected with the shell body 42; the anti-warping edge 422 is disposed on one of the edge end face of the extending edge and the side wall of the groove 42a, and the other of the two is correspondingly provided with an anti-warping edge groove which is inserted and connected with the anti-warping edge 422. It can be understood that the surface of the housing body 42 is provided with a slot 42a, an extending edge extends from the foot seat 421, and the extending edge is fixedly embedded with the slot 42a by means of adhesive bonding or bolt fastening, so that the foot seat 421 is connected with the housing body 42. The depth of the embedded groove 42a can be slightly larger than the thickness of the extending edge, so that the extending edge is located below the groove opening surface of the embedded groove 42a, and therefore the extending edge has a certain tilting margin, even if degumming or bolt screwing is over-tight, the extending edge is only separated from the groove bottom wall of the embedded groove 42a, but is not directly tilted from the embedded groove 42a and protrudes out of the surface of the shell body 42, so that the danger that a user or an article is scraped by the tilted extending edge is avoided, and the attractive appearance of the equipment is ensured.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A power supply device, comprising:

an inversion module;

the battery pack is provided with the inverter module, and the inverter module is positioned above the battery pack;

the inverter module bracket comprises a first batten and a second batten, the first batten and the second batten are used for supporting the inverter module, the first batten and the second batten are arranged between the inverter module and the battery pack, and the first batten and the second batten are arranged at intervals;

the inverter module, the inverter module bracket and the battery are contained in the shell;

wherein the first lath and the second lath are both formed with a hemming structure along the length direction of the first lath and the second lath.

2. The power supply device according to claim 1, characterized in that: the edge curling structure is a flange which is formed by downwards turning the long side of the first lath or the long side of the second lath.

3. The power supply device according to claim 1, characterized in that: and supporting columns for supporting the inversion modules are arranged on the first lath and the second lath.

4. The power supply device according to claim 1, characterized in that: the battery pack includes:

a cell having a positive terminal and a negative terminal;

the battery pack shell contains the battery core, the positive electrode end and the negative electrode end protrude out of the battery pack shell, and two containing grooves are formed in the battery pack shell;

the battery management module is positioned outside the battery pack body and provided with a first end and a second end, and the first end and the second end are respectively positioned above one accommodating groove;

the two fixing pieces are respectively arranged in the accommodating groove and can move in the depth direction of the accommodating groove;

and the two connecting pieces are respectively matched with the fixing piece and used for enabling the fixing piece to move in the depth direction of the accommodating groove to respectively push the positive pole end and the negative pole end so as to enable the positive pole end to be in contact with the first end and the negative pole end to be in contact with the second end.

5. The power supply device according to claim 4, characterized in that: the fixing piece is a nut, the connecting piece is a bolt matched with the nut, the positive end and the first end penetrate through one bolt, and the negative end and the second end penetrate through the other bolt.

6. The power supply device according to claim 4, wherein: and an opening penetrating through the groove wall is formed in the groove wall of the accommodating groove and is used for accommodating the fixing piece into the accommodating groove.

7. The power supply device according to claim 1, characterized in that: the housing includes:

the cover body is used for covering the inversion module and forming a containing space with the inversion module;

the shell body is used for containing the battery pack and the inverter module bracket, and the inverter module protrudes out of the shell body;

the flow distribution plate is arranged on the inner side of the cover body and is used for distributing air flowing into the accommodating space.

8. The power supply device according to claim 7, characterized in that: the cover body further comprises a first air deflector and a second air deflector which are both located in the containing space, the first air deflector is arranged on the inner side of the cover body, the radiating holes are located between every two adjacent first air deflectors, the second air deflector is connected to one end, away from the side wall of the cover body, of each first air deflector, and an included angle is formed between the plane where the second air deflector is located and the plane where the first air deflector is located.

9. The power supply device according to claim 7, wherein: the cover body further comprises a dustproof piece, a threaded hole is formed in the outer side of the end face of the cover body, and the dustproof piece covers the cover body and blocks the threaded hole.

10. The power supply device according to claim 7, wherein the case body includes:

a plurality of insert grooves, each of which is formed at the bottom of the case body;

the foot seats are provided with extending edges corresponding to the contour of the groove edges of the embedded grooves, and the extending edges can be fixedly embedded in the embedded grooves so as to connect the foot seats with the shell body;

the anti-warping edge strip is arranged on the edge end face of the extending edge and one of the groove side walls of the embedded groove, and the other one of the edge end face and the groove side wall of the embedded groove is correspondingly provided with the anti-warping edge groove which is matched with the anti-warping edge strip for insertion.

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