Electricity taking device of electric automobile

Abstract

The utility model discloses an electric automobile electricity taking device which comprises a shell, one end of the shell is provided with an end cover, the other end of the shell is provided with an electricity taking port, and the end cover is provided with a discharging port. The fan group is integrated on the heat dissipation part; at least one air channel is formed in the heat dissipation part and located in the second cavity. The fan set comprises at least one fan, the fan corresponds to the air channel of the heat dissipation part and is located on the inner side of the air inlet, and air sucked by the fan from the air inlet enters the air channel and then is exhausted from the air outlet. The electricity taking device is handheld and can be directly inserted into the direct-current port of the electric automobile for use, the direct-current port of the electric automobile is a certain height away from the ground, dust and sundries on the ground are not prone to being sucked in, and an air duct is prevented from being blocked. The electricity taking device does not need a cable, integrates the functions of a discharge gun and a patch board in the prior art, and effectively reduces the cost; the size is small, and hand holding is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment for new energy electric vehicles, in particular to a power supply for electric vehicles. Background Art

[0002] New energy electric vehicles are used as power supplies, and they draw power through an anti-electric gun, so that they can meet the 220V voltage requirements of general household appliances. They can be used in outdoor camping, barbecue, cooking and other scenarios to meet users' electricity needs in the suburbs.

[0003] When drawing power from the DC port of an electric vehicle, it is necessary to convert the DC power into AC power that can be used by electrical equipment. The conversion circuit has heating components, and the temperature rises, which will affect the performance of the device. In the prior art, the power-drawing method adopted by the application number 202221264841.X entitled "An Inverter for Electric Vehicles" is as follows: one end of the discharge gun is connected to the electric vehicle, and the other end of the discharge gun is connected to a cable. The end of the cable has a power strip, and the electrical equipment is connected through the power strip. The power strip includes a shell, one end of the shell is provided with an air inlet, and the other end is provided with an air outlet; a heat dissipation part, the heat dissipation part is U-shaped and arranged in the air duct, and the outside of the heat dissipation part side plate includes heat dissipation fins; the main circuit board is arranged in the U-shaped heat dissipation part groove, the heating device is fixed on the inner wall of the heat dissipation part side plate, and the fan is located on the inner side of the air inlet. He uses the fan to force air cooling to take away the heat from the heat dissipation fins.

[0004] Defects of the existing technology:

[0005] 1. The power supply includes power gun, cable and power strip, which is costly;

[0006] 2. When going out, the power strip is usually placed on the ground for use. A large amount of dust and debris on the ground can easily enter the air duct, causing blockage in the air duct and affecting the heat dissipation effect.

[0007] Therefore, based on the above technical problems, technicians in this field urgently need to develop an electric vehicle power supply. Utility Model Content

[0008] The purpose of the utility model is to provide an electric vehicle charging station, which is handheld and can be directly plugged into the DC charging port of the electric vehicle for use. It is at a certain height from the ground and is not easy to inhale dust and debris from the ground, thus avoiding blockage of the air duct. The charging station does not require cables, integrates the functions of the discharge gun and the power strip in the prior art, and effectively reduces costs.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] The utility model provides an electric vehicle power supply, which comprises:

[0011] A shell, one end of which is provided with an end cover, the other end of which is provided with a power-taking port, the end cover is provided with a discharge port, a first cavity and a second cavity are formed between the power-taking port and the discharge port, and the first cavity and the second cavity are connected;

[0012] A circuit board assembly, the circuit board assembly is integrated in the first cavity, the circuit board assembly has a plurality of heating devices extending toward one side of the second cavity, and a plurality of terminals electrically connected to the electric vehicle, and the terminals extend into the power taking port;

[0013] a heat dissipation portion, the heat dissipation portion being integrated in the second cavity and being used to block the communication between the first cavity and the second cavity, and between the air inlet and the air outlet; and

[0014] A fan group integrated in the heat dissipation unit;

[0015] At least one air duct is formed on the heat dissipation portion, and the air duct is located in the second cavity;

[0016] The fan group includes at least one fan, which is arranged corresponding to the air duct of the heat dissipation part and is located on the inner side of the air inlet. The air sucked in from the air inlet by the fan enters the air duct and is discharged from the air outlet.

[0017] Furthermore, the heat dissipation unit includes:

[0018] Base; and

[0019] a convex portion located on one side of the base;

[0020] A step surface is formed between the first cavity and the second cavity, the base of the heat dissipation part is assembled and fixed on the step surface, and the convex part is located in the second cavity;

[0021] The fan is arranged on the convex portion;

[0022] The air duct is formed between the convex portion and the base, and the air duct is located at one side of the air outlet.

[0023] Further, the convex portion includes:

[0024] Main body;

[0025] The air duct is formed between the main body and the base, and a fan is arranged on the top of the main body, and the fan is configured as a top fan.

[0026] Furthermore, the fan group includes two top fans, and the two top fans are symmetrically arranged;

[0027] The angle between the center lines of the two top fans is no greater than 90°

[0028] Furthermore, the fan group also includes:

[0029] two bottom fans located below the top fans;

[0030] The two bottom fans are symmetrically arranged and are respectively located below the top fan on the corresponding side;

[0031] The included angle between the center lines of the two bottom fans is no greater than 180°;

[0032] The angle between the mounting surface of the bottom fan and the base is less than 90°.

[0033] Furthermore, the heat dissipation unit also includes a top cover;

[0034] The convex portion is arranged between the top cover and the base, and the air duct is formed between the base, the top cover and the convex portion.

[0035] Furthermore, at least one fin is provided in the air duct, the fin is perpendicular to the base, and the fin divides the air duct into a plurality of branch air ducts.

[0036] Furthermore, the circuit board assembly includes:

[0037] A first circuit board and a second circuit board are arranged parallel to each other and spaced apart;

[0038] The first circuit board is electrically connected to the second circuit board;

[0039] The first circuit board has a plurality of the heating components protruding toward the heat dissipation portion, and the second circuit board has a plurality of the terminals.

[0040] Furthermore, the first circuit board has at least one MOS tube as a heating device, and the first circuit board also has at least one inductor;

[0041] The heat dissipation part is thermally connected to the MOS tube at a side close to the first circuit board, and a avoidance groove for avoiding the inductor is provided at a position where the heat dissipation part cooperates with the inductor.

[0042] Furthermore, the maximum outer diameter of the shell is not greater than 120 mm, and the maximum axial length of the electrical collector is not greater than 200 mm.

[0043] In the above technical solution, the utility model provides an electric vehicle power supply, which has the following beneficial effects:

[0044] The power supply of the utility model is handheld and can be directly plugged into a DC port of an electric vehicle for use. The DC port of the electric vehicle is at a certain height from the ground, so dust and debris from the ground are not easily sucked in, thereby avoiding blockage of the air duct.

[0045] The utility model does not require cables, integrates the functions of the discharge gun and the plug board in the prior art, effectively reduces the cost, and has a small size and is convenient to hold.

[0046] The power supply of the utility model realizes the isolation of the air duct and the circuit board assembly, so that the first cavity realizes the sealing of the circuit board assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0048] Figure 1 A schematic diagram of the structure of an electric vehicle power supply provided by an embodiment of the utility model;

[0049] Figure 2 A cross-sectional view of an electric vehicle power supply provided by an embodiment of the utility model;

[0050] Figure 3 A schematic diagram of a first implementation of a convex portion, a base, a fan position structure and a wind flow direction of an electric vehicle power supply provided by an embodiment of the utility model;

[0051] Figure 4 A schematic diagram of a second implementation of a convex portion, a base, a fan position structure and a wind flow direction of an electric vehicle power supply provided by an embodiment of the utility model;

[0052] Figure 5 A schematic diagram of a third implementation of a convex portion, a base, a fan position structure and a wind flow direction of an electric vehicle power supply provided by an embodiment of the utility model;

[0053] Figure 6 A schematic diagram of the structure of a heat dissipation part with a top cover and a fan position of an electric vehicle power supply provided by an embodiment of the utility model;

[0054] Figure 7 A schematic diagram of the side view structure of a heat dissipation part of an electric vehicle power supply without a top cover close to a circuit board provided in an embodiment of the utility model;

[0055] Figure 8A schematic structural diagram of an electric vehicle power supply avoidance groove provided in an embodiment of the utility model.

[0056] Description of reference numerals:

[0057] 1. Shell; 2. End cover; 3. Fan assembly; 4. Heat dissipation unit; 5. Circuit board assembly;

[0058] 11. Air inlet; 12. Air outlet; 13. First cavity; 14. Second cavity; 15. Step surface; 16. Power supply port;

[0059] 21. Discharge port;

[0060] 31. Top fan; 32. Bottom fan;

[0061] 41. base; 42. convex portion; 43. top cover; 44. fastener;

[0062] 401, branch air duct; 411, first fixing hole; 412, avoidance groove; 421, main body; 4211, second fixing hole; 422, fin;

[0063] 51. First circuit board; 511. Inductor; 52. Second circuit board; 521. Terminal. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0065] See also Figures 1 to 8 As shown;

[0066] This embodiment discloses an electric vehicle power supply, which includes:

[0067] A housing 1, one end of the housing 1 is provided with an end cap 2, the other end of the housing 1 is provided with a power-taking port 16, the end cap 2 is provided with a discharge port 21, a first cavity 13 and a second cavity 14 are formed between the power-taking port 16 and the discharge port 21, and the first cavity 13 and the second cavity 14 are communicated;

[0068] The circuit board assembly 5 is integrated in the first cavity 13, and the circuit board assembly 5 has a plurality of heating devices extending toward one side of the second cavity 14, and a plurality of terminals 521 electrically connected to the electric vehicle, and the terminals 521 extend into the power supply port 16;

[0069] The heat dissipation part 4 is integrated in the second cavity 14 and is used to block the communication between the first cavity 13 and the second cavity 14, and the air inlet 11 and the air outlet 12; and

[0070] A fan assembly 3 integrated in the heat dissipation unit 4;

[0071] At least one air duct is formed on the heat dissipation portion 4, and the air duct is located in the second cavity 14;

[0072] The fan assembly 3 includes at least one fan, which is disposed corresponding to the air duct of the heat dissipation portion 4 and is located inside the air inlet 11 . The air sucked in by the fan from the air inlet 11 enters the air duct and is discharged from the air outlet 12 .

[0073] Specifically, the present embodiment discloses a handheld power supply, which includes a shell 1, a circuit board assembly 5, a heat dissipation portion 4 and a fan group 3; wherein a first cavity 13 and a second cavity 14 are formed between the discharge port 21 and the power supply port 16 of the shell 1, and an air inlet 11 and an air outlet 12 connected to the second cavity 14 are provided on the outer peripheral surface of the shell 1; the circuit board assembly 5 is integrated in the first cavity 13, the heating device of the circuit board assembly 5 is close to the heat dissipation portion 4, and the terminal 521 of the circuit board assembly 5 extends to the inside of the power supply port 16.

[0074] Secondly, the heat dissipation part 4 of the present embodiment is assembled and fixed on the step surface 15 between the first cavity 13 and the second cavity 14, and can block the connection between the first cavity 13 and the second cavity 14, and the air inlet 11 and the air outlet 12 through the heat dissipation part 4; the heat dissipation part 4 of the present embodiment is provided with an air duct, and the air duct is located in the second cavity 14, and the fan group 3 of the present embodiment includes at least one fan, which is arranged on the heat dissipation part 4, and is arranged one-to-one with the air duct and is located on the inner side of the air inlet 11.

[0075] In addition, the other end of the shell 1 of this embodiment is a power supply port 16, which is a part of the shell 1 and does not include an electrical connection part. The power supply port 16 and the electrical connection terminal 521 are used to plug into the DC charging port of the electric vehicle. The structure is prior art and will not be repeated here.

[0076] Preferably, the heat dissipation unit 4 of this embodiment includes:

[0077] a base 41; and

[0078] a protrusion 42 located on one side of the base 41;

[0079] A step surface 15 is formed between the first cavity 13 and the second cavity 14 , the base 41 of the heat dissipation portion 4 is assembled and fixed on the step surface 15 , and the convex portion 42 is located in the second cavity 14 ;

[0080] The fan is disposed on the protrusion 42;

[0081] An air duct is formed between the protrusion 42 and the base 41 , and the air duct is located on one side of the air outlet 12 .

[0082] The present embodiment further defines the structure of the heat dissipation portion 4, which includes a base 41 and a convex portion 42 located on one side of the base 41. The base 41 of the present embodiment is assembled and fixed on the step surface 15, and then the convex portion 42 is located in the second cavity 14. The convex portion 42 is arranged perpendicular to the base 41, and a fan is arranged on the convex portion 42. An air duct is formed between the convex portion 42 and the base 41 of the present embodiment, and the air duct is located on one side of the fan outlet. Due to the difference in the number of fans and the structure of the convex portion 42, the present application is further explained and illustrated with the following embodiments.

[0083] See also Figure 3 As shown, Example 1, this Example 1 is a first implementation method of the fan group 3:

[0084] The convex portion 42 of this embodiment includes:

[0085] Main body 421;

[0086] An air duct is formed between the main body 421 and the base 41 , and a fan is disposed on the top of the main body 421 , and the fan is configured as a top fan 31 .

[0087] The first embodiment of the present invention adopts a top fan 31. The mounting surface of the top fan 31 on the protrusion 42 is arranged perpendicular to the base 41. The base 41 is provided with a first fixing hole 411, and the first fixing hole 411 avoids the top fan 31 along the axis, so that the heat dissipation part is fixed on the step surface 15 through the first fixing hole 411. In order to increase the heat dissipation area and improve the cooling effect, the protrusion 42 also includes at least one fin 422, so that the air duct is divided into multiple branch air ducts 401 through the fin 422. The base 41 and the protrusion 42 in the present embodiment are an integrated structure, and the material is aluminum.

[0088] See also Figure 4 As shown, in the second embodiment, this second embodiment is a second implementation of the fan group 3:

[0089] The fan group 3 of the second embodiment includes two top fans 31, and the two top fans 31 are symmetrically arranged;

[0090] The angle between the center lines of the two top fans 31 is not greater than 90°

[0091] In the second embodiment, two symmetrical top fans 31 are designed. The center line of the fan refers to the axis of the fan blade fixing shaft. Two mounting surfaces for fixing the top fans 31 are provided on the top of the main body 421 .

[0092] See also Figure 5 and Figure 6 As shown, Embodiment 3, this Embodiment 3 is a third implementation mode of the fan group 3:

[0093] The fan group 3 of the third embodiment further includes:

[0094] two bottom fans 32 located below the top fans 31;

[0095] The two bottom fans 32 are symmetrically arranged and are respectively located below the top fans 31 on the corresponding side;

[0096] The angle between the center lines of the two bottom fans 32 is no greater than 180°;

[0097] The angle between the mounting surface of the bottom fan 32 and the base 41 is less than 90°.

[0098] The fan group 3 of the third embodiment includes two top fans 31 and two bottom fans 32 , wherein the bottom fans 32 are arranged below the top fans 31 .

[0099] Preferably, the heat dissipation portion 4 of this embodiment further includes a top cover 43;

[0100] A convex portion 42 is disposed between the top cover 43 and the base 41 , and an air duct is formed between the base 41 , the top cover 43 and the convex portion 42 .

[0101] Among them, at least one fin 422 is arranged in the air duct, the fin 422 is perpendicular to the base 41, and the fin 422 divides the air duct into a plurality of branch air ducts 401.

[0102] The air duct of the present embodiment is an open structure, and part of the wind may be retained in the second cavity 14 outside the air duct, which is not conducive to circulating heat dissipation. Therefore, the heat dissipation part 4 of the present embodiment also includes a top cover 43 and a fastener 44, wherein a convex portion 42 is clamped between the top cover 43 and the base 41, and the fastener 44 passes through the corresponding hole on the top cover 43 and is screwed to the second fixing hole 4211 on the convex portion 42.

[0103] Preferably, the circuit board assembly 5 of this embodiment includes:

[0104] A first circuit board 51 and a second circuit board 52 are arranged parallel to each other and spaced apart;

[0105] The first circuit board 51 and the second circuit board 52 are electrically connected;

[0106] The first circuit board 51 has a plurality of heat generating components protruding toward the heat dissipation portion 4 , and the second circuit board 52 has a plurality of terminals 521 .

[0107] In this embodiment, the first circuit board 51 has at least one MOS tube as a heating device, and the first circuit board 51 also has at least one inductor 511;

[0108] The heat dissipation part 4 is thermally connected to the MOS tube at one side close to the first circuit board 51 , and a relief groove 412 for avoiding the inductor 511 is provided at the position where the heat dissipation part 4 cooperates with the inductor 511 .

[0109] The present embodiment further defines the structure of the circuit board assembly 5, which comprises at least two parallel and spaced-apart first circuit boards 51 and second circuit boards 52, the two circuit boards being electrically connected, the first circuit board 51 being provided with a plurality of heating devices protruding toward the heat dissipation portion 4, the second circuit board 52 being provided with a plurality of terminals 521; the terminals 521 extending along the axis into the power taking port 16, and the shape structure and number of the terminals 521 of the present embodiment match the DC port of the electric vehicle, the power taking port 16 of the electrical appliance is plugged into the DC port of the electric vehicle, the terminals 521 are electrically connected to the electric vehicle, so that the electric vehicle is discharged, and the DC power is converted into AC power that can be used by the electrical equipment through the main circuit on the circuit board assembly 5 and output to the electrical equipment through the discharge port.

[0110] In this embodiment, at least one MOS tube and at least one inductor 511 are disposed on the first circuit board 51. The MOS tube is used as a heating device. The end surface of the heat dissipation portion 4 facing the first circuit board 51 is thermally connected to the MOS tube through a thermal conductive adhesive. Figure 8 As shown, the heat dissipation portion 4 is provided with an avoidance groove 412 for avoiding the inductor 511. When the inductor 511 also needs to dissipate heat, the inductor 511 serves as the above-mentioned heating device, and a thermal conductive adhesive can be set in the avoidance groove 412 to make the avoidance groove 512 and the inductor 511 thermally connected. The MOS tube is not shown in the figure. The top surface of the MOS tube in this embodiment is in thermal contact with an end surface of the heat dissipation portion 4 close to the first circuit board 51. The inductor 511 is higher than the MOS tube and is avoided by the avoidance groove 412. A protrusion is formed on the back of the avoidance groove 412, and the protrusion is at least partially located in the air duct.

[0111] The power supply of this embodiment is handheld and small in size. Preferably, the maximum outer diameter of the housing 1 of the power supply of this embodiment is not greater than 120 mm, and the maximum axial length of the outer shape of the power supply is not greater than 200 mm.

[0112] In the above technical solution, the utility model provides an electric vehicle power supply, which has the following beneficial effects:

[0113] The power supply of the utility model is handheld and can be directly plugged into a DC port of an electric vehicle for use. The DC port of the electric vehicle is at a certain height from the ground, so dust and debris from the ground are not easily sucked in, thereby avoiding blockage of the air duct.

[0114] The utility model does not require cables, integrates the functions of the discharge gun and the plug board in the prior art, effectively reduces the cost, and has a small size and is convenient to hold.

[0115] The power supply of the utility model realizes the isolation of the air duct and the circuit board assembly 5 , so that the first cavity 13 realizes the sealing of the circuit board assembly 5 .

[0116] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electric vehicle power supply, It is characterized in that The power supply includes: A shell (1), wherein one end of the shell (1) is provided with an end cover (2), the other end of the shell (1) is provided with a power supply port (16), the end cover (2) is provided with a discharge port (21), a first cavity (13) and a second cavity (14) are formed between the power supply port (16) and the discharge port (21), and the first cavity (13) and the second cavity (14) are in communication; A circuit board assembly (5), the circuit board assembly (5) being integrated into the first cavity (13), the circuit board assembly (5) having a plurality of heating devices extending toward one side of the second cavity (14), and a plurality of terminals (521) electrically connected to the electric vehicle, and the terminals (521) extending into the power supply port (16); a heat dissipation portion (4), the heat dissipation portion (4) being integrated in the second cavity (14), and the heat dissipation portion (4) being used to block the communication between the first cavity (13) and the second cavity (14), and between the air inlet (11) and the air outlet (12); and A fan group (3) integrated in the heat dissipation portion (4); At least one air duct is formed on the heat dissipation portion (4), and the air duct is located in the second cavity (14); The fan group (3) comprises at least one fan, which is arranged corresponding to the air duct of the heat dissipation portion (4) and is located on the inner side of the air inlet (11). The air sucked in by the fan from the air inlet (11) enters the air duct and is discharged from the air outlet (12).

2. The electric vehicle power supply according to claim 1, It is characterized in that The heat dissipation part (4) comprises: a base (41); and a convex portion (42) located on one side of the base (41); A step surface (15) is formed between the first cavity (13) and the second cavity (14); the base (41) of the heat dissipation portion (4) is assembled and fixed on the step surface (15), and the convex portion (42) is located in the second cavity (14); The fan is arranged on the convex portion (42); The air duct is formed between the convex portion (42) and the base (41), and the air duct is located on one side of the air outlet (12).

3. The electric vehicle power supply according to claim 2, It is characterized in that The convex portion (42) comprises: A main body (421); The air duct is formed between the main body (421) and the base (41), and a fan is arranged on the top of the main body (421), and the fan is configured as a top fan (31).

4. The electric vehicle power supply according to claim 3, It is characterized in that The fan group (3) comprises two top fans (31), and the two top fans (31) are symmetrically arranged; The included angle between the center lines of the two top fans (31) is no greater than 90°.

5. The electric vehicle power supply according to claim 4, It is characterized in that The fan group (3) also includes: two bottom fans (32) located below the top fan (31); The two bottom fans (32) are symmetrically arranged and are respectively located below the top fan (31) on a corresponding side; The included angle between the center lines of the two bottom fans (32) is no greater than 180°; The angle between the mounting surface of the bottom fan (32) and the base (41) is less than 90°.

6. The electric vehicle power supply according to claim 2, It is characterized in that The heat dissipation portion (4) further includes a top cover (43); The convex portion (42) is provided between the top cover (43) and the base (41), and the air duct is formed between the base (41), the top cover (43) and the convex portion (42).

7. An electric vehicle power supply according to claim 2 or 6, It is characterized in that At least one fin (422) is arranged in the air duct, the fin (422) is perpendicular to the base (41), and the fin (422) divides the air duct into a plurality of branch air ducts (401).

8. The electric vehicle power supply according to claim 1, It is characterized in that The circuit board assembly (5) comprises: A first circuit board (51) and a second circuit board (52) arranged parallel to each other and spaced apart; The first circuit board (51) and the second circuit board (52) are electrically connected; The first circuit board (51) has a plurality of heating devices protruding toward the heat dissipation portion (4), and the second circuit board (52) has a plurality of terminals (521).

9. The electric vehicle power supply according to claim 8, It is characterized in that The first circuit board (51) has at least one MOS tube as a heating device, and the first circuit board (51) also has at least one inductor (511); The heat dissipation portion (4) is thermally connected to the MOS tube at a side close to the first circuit board (51), and a relief groove (412) for avoiding the inductor (511) is provided at a position where the heat dissipation portion (4) cooperates with the inductor (511).

10. The electric vehicle power supply according to claim 1, It is characterized in that The maximum outer diameter of the shell (1) is not greater than 120 mm, and the maximum axial length of the outer shape of the power collector is not greater than 200 mm.

Images