Low-noise high-protection direct current charger and control method

Abstract

The invention relates to a low-noise high-protection direct-current charger and a control method, and belongs to the technical field of electric automobile charging, the charger comprises a cabinet body, the inner cavity of the cabinet body is divided into an electrical cabin and a charging cabin by a front and rear cabin partition plate, and a high-protection shutter is installed on the side wall of the charging cabin; a silencing barrel is arranged in the charging cabin, and the silencing barrel is arranged on a high-protection shutter extending into the charging cabin in a sleeving manner; the charging module is arranged in the charging cabin; a cooling fan is arranged above the charging module; the rear wall of the charging cabin is provided with an air outlet of the cooling fan, and the air outlet is covered with a turning noise reduction cover; a temperature sensor and a controller are arranged in the charging cabin; the controller is connected with the temperature sensor and is used for monitoring the temperature in the charging cabin; the controller is further connected with the cooling fan and used for controlling the running state of the cooling fan. The cooling fan can drive air in the charging cabin to flow circularly, heat dissipated by the charging module is discharged out of the cabinet body and interacts with external air circularly, and the temperature in the charging cabin is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to a low-noise and high-protection direct current charger and a control method thereof. Background Art

[0002] With the development of science and technology, new energy vehicles are widely used, and the era of automobile electrification is coming. Charging infrastructure, as an important part of the entire electric vehicle industry chain, is a necessary condition to support the application and scale development of the electric vehicle industry. DC chargers have initially formed a variety of charging service networks, including private charging facilities in residential areas and units, special charging facilities for public transportation, logistics, and rental, urban public charging infrastructure, and intercity fast charging stations on highways, which can basically meet the travel needs of electric vehicle users. However, traditional DC chargers have exposed some problems during use.

[0003] On the one hand, the DC charger will generate a lot of heat during use. In order to dissipate the heat, the fan runs at high speed, which will produce certain noise.

[0004] On the other hand, the main ventilation and heat dissipation method for power conversion modules and DC chargers is to set up short straight air ducts. Such short straight air ducts easily bring a large amount of external dust into the DC charger, resulting in a sharp reduction in the life of the internal equipment of the DC charger and a low protection level. Summary of the invention

[0005] The object of the present invention is to provide a low-noise and high-protection DC charger and a control method for solving any of the above-mentioned technical problems.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: In a first aspect, a low-noise and high-protection DC charger includes a cabinet in which a charging module is arranged, and an inner cavity of the cabinet is divided into an electrical compartment and a charging compartment by front and rear compartment partitions; The front wall of the electrical compartment is provided with a front-opening door; The side walls of the charging compartment are provided with a right door and a left door respectively, and the side walls of the right door and the left door are provided with hollow openings, and high-protection shutters are installed on the hollow openings; A silencer barrel is provided in the charging cabin, and the silencer barrel is a rectangular sleeve, and the silencer barrel is sleeved on a high-protection shutter extending into the charging cabin; The charging module is arranged in the middle of the charging compartment and is located obliquely above the muffler barrel; A heat dissipation cabin is also provided in the charging cabin, and the heat dissipation cabin is located above the charging module; A cooling fan is arranged in the cooling cabin; An air outlet of the cooling fan is arranged on the rear wall of the charging cabin, the air outlet is arranged at a height lower than the cooling cabin, and a reversing silencer is arranged on the upper cover of the air outlet; A temperature sensor and a controller are provided in the charging cabin; The controller is connected to a temperature sensor for monitoring the temperature in the charging compartment; The controller is also connected to the cooling fan and is used to control the operating state of the cooling fan.

[0007] Furthermore, the high-protection shutter comprises a rectangular mounting frame, in which a plurality of dust-blocking components are mounted, the plurality of dust-blocking components are arranged in a vertical direction, and two adjacent dust-blocking components form a "maze"-shaped air inlet; The dust blocking assembly includes a first vertical blade, a second vertical blade, a third vertical blade, a first inclined blade, a second inclined blade, and a third inclined blade; Both sides of the first vertical blade, the second vertical blade, the third vertical blade, the first inclined blade, the second inclined blade and the third inclined blade are welded to the mounting frame; The first inclined blade and the second inclined blade are symmetrically arranged about the first vertical blade, and the upper parts of the first inclined blade and the second inclined blade are connected to the first vertical blade, the upper part of the second vertical blade is connected to the lower part of the first inclined blade, the third vertical blade is installed on the side of the second inclined blade away from the second vertical blade, and a avoidance space for ventilation is reserved between the third vertical blade and the second inclined blade, the upper part of the third inclined blade is connected to the third vertical blade, a avoidance space for ventilation is reserved between the third inclined blade and the second inclined blade, and a avoidance space for ventilation is reserved between the third inclined blade and the first vertical blade in an adjacent group of dust shielding components.

[0008] Furthermore, a first ventilation duct is reserved between the charging module and the muffler barrel; A second ventilation duct is reserved between the charging module and the right door; A third ventilation duct is reserved between the charging module and the left door; A fourth ventilation duct is reserved between the charging module and the heat dissipation cabin; The first ventilation duct, the second ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct, and the first ventilation duct, the third ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct.

[0009] Furthermore, sound absorbing material is provided on the inner wall of the silencer barrel.

[0010] Furthermore, the right door is provided with sound insulation material near the second ventilation duct; The left door is provided with sound insulation material near the third ventilation duct.

[0011] Furthermore, a dust screen is provided on the high protection shutters extending into the charging compartment.

[0012] Furthermore, the change-of-direction silencer cover is provided with sound-absorbing material.

[0013] In a second aspect, a control method for a low-noise and high-protection DC charger is provided, the method comprising: The controller obtains the temperature information in the charging cabin through the temperature sensor; The controller determines, based on the temperature information in the charging compartment, whether the temperature in the charging compartment is greater than or equal to a preset first temperature threshold; If it is determined that the temperature in the charging compartment is lower than a preset first temperature threshold, no control signal is sent, and the cooling fan is not controlled to turn on; If it is determined that the temperature in the charging compartment is greater than or equal to a preset first temperature threshold, a control signal is sent to control the cooling fan to turn on.

[0014] Beneficial effects of the present invention: The cooling fan can drive the air circulation in the charging cabin, discharge the heat emitted by the charging module out of the cabinet, and interact with the external air circulation to reduce the temperature in the charging cabin; The high protection shutter is provided with several groups of dust blocking components, which are arranged in the vertical direction. Two adjacent groups of dust blocking components form a "maze" type air inlet. When the airflow with dust blows through the high protection shutter, the second vertical blade, the second inclined blade and the third inclined blade block the dust in turn. Compared with the original short straight air duct, it can block most of the dust and has a high protection level. After the natural wind enters the charging cabin through the high-protection shutters on the right door, it passes through the "S"-shaped air duct formed by the first ventilation duct, the second ventilation duct and the fourth ventilation duct, and then is discharged out of the charging cabin. After the natural wind enters the charging cabin through the high-protection shutters on the left door, it passes through the "S"-shaped air duct formed by the first ventilation duct, the third ventilation duct and the fourth ventilation duct, and then is discharged out of the charging cabin. The design of the "S"-shaped air duct extends the heat dissipation air duct and effectively reduces the generation of noise; The inner wall of the silencer barrel is provided with sound-absorbing material, and the reversing silencer cover is provided with sound-absorbing material, which effectively reduces the noise in the air inlet and outlet areas and reduces the propagation of noise.

[0015] These and other objects, features and advantages of the present invention will be fully reflected in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a charging cabinet provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a charging cabinet body at an angle provided by an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure provided by an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure at a first angle provided by an embodiment of the present invention; Figure 5 A schematic diagram of a second angle of the internal structure provided by an embodiment of the present invention; Figure 6 A schematic cross-sectional view of a high-protection shutter provided in an embodiment of the present invention.

[0017] Figure markings: 1-cabinet, 2-front door, 3-right door, 4-left door, 5-high protection shutter, 51-first vertical blade, 52-first inclined blade, 53-second inclined blade, 54-second vertical blade, 55-third vertical blade, 56-third inclined blade, 57-dust net, 6-electrical compartment, 7-charging compartment, 8-silencer barrel, 9-charging module, 10-sound-absorbing material, 11-heat dissipation compartment, 12-heat dissipation fan, 13-reversible silencer. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0019] It should be understood by those skilled in the art that, in the disclosure of the specification, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. Therefore, the above terms should not be understood as limiting the present invention.

[0020] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0021] refer to Figures 1 to 5A low-noise and high-protection DC charger according to a preferred embodiment of the present invention will be described in detail below, wherein the DC charger includes a cabinet 1, a charging module 9 is arranged in the cabinet 1, and the inner cavity of the cabinet 1 is divided into an electrical compartment 6 and a charging compartment 7 by front and rear compartment partitions; a front door 2 is arranged on the front wall of the electrical compartment 6; a right door 3 and a left door 4 are respectively arranged on the side walls of the charging compartment 7, and hollow openings are opened on the side walls of the right door 3 and the left door 4, and high-protection shutters 5 are installed on the hollow openings, and the high-protection shutters 5 are used to improve the protection level of the DC charger.

[0022] The charging module 9 is arranged in the charging cabin 7. The charging module 9 in the charging cabin 7 may generate heat during operation. The charging cabin 7 equipped with the charging module 9 is separated from the electrical cabin 6 to prevent the heat emitted by the charging module 9 from affecting the electrical equipment in the electrical cabin 6. The charging module 9 in the charging cabin 7 can also be better thermally managed. A heat dissipation cabin 11 is arranged in the charging cabin, and a wind duct can be formed in the charging cabin 7 in conjunction with the high-protection shutters 5 to effectively dissipate the heat generated by the charging module 9.

[0023] A silencer barrel 8 is provided in the charging cabin 7, and the silencer barrel 8 is a rectangular sleeve, and the silencer barrel 8 is mounted on the high protection shutter 5 extending into the charging cabin 7. The charging module 9 is arranged in the middle of the charging cabin 7 and is located obliquely above the silencer barrel 8. A silencer barrel 8 is provided in the charging cabin 7, and the silencer barrel 8 is mounted on the high protection shutter 5 extending into the charging cabin 7. In this embodiment, the high protection shutters 5 installed on the right door 3 and the left door 4 are equivalent to the air inlet of the charging cabin 6, which changes the air inlet and outlet mode, reduces the noise in the air inlet and outlet area of ​​the charging module, and realizes low-noise operation.

[0024] A heat dissipation cabin 11 is also provided in the charging cabin 7, and the heat dissipation cabin 11 is located above the charging module 9. A heat dissipation fan 12 is provided in the heat dissipation cabin 11, and an air outlet of the heat dissipation fan 12 is provided on the rear wall of the charging cabin 7, and the setting height of the air outlet is lower than that of the heat dissipation cabin 11, and a reversing silencer 13 is provided on the air outlet.

[0025] The cooling fan 12 is placed in the middle of the cooling cabin 11. The cooling fan 12 can drive the air in the charging cabin 6 to circulate. The high-protection shutters 5 installed on the right door 3 and the left door 4 are equivalent to the air inlet of the charging cabin 6. The natural wind entering the charging cabin 6 will form an air duct under the action of the two high-protection shutters 5 and the air outlet. After the natural wind enters the charging cabin 6 through the high-protection shutters 5 installed on the right door 3 and the left door 4, it passes upward through the charging module 9 and discharges the heat emitted by the charging module 9 out of the charging cabin 6 through the air outlet, so that the hot air in the charging cabin 6 and the external air circulate and interact to cool down.

[0026] A temperature sensor and a controller are provided in the charging compartment 7 ; the controller is connected to the temperature sensor for monitoring the temperature in the charging compartment 7 ; the controller is also connected to the cooling fan 12 for controlling the operating state of the cooling fan 12 .

[0027] For example, in combination Figure 6 The high protection shutter 5 includes a rectangular mounting frame 58, in which a plurality of dust shielding components are mounted. The plurality of dust shielding components are arranged in a vertical direction, and two adjacent dust shielding components form a "maze" type air inlet. A dustproof net 57 is provided on the mounting frame 58 extending into the charging compartment 7.

[0028] The dust blocking assembly includes a first vertical blade 51 , a second vertical blade 54 , a third vertical blade 55 , a first inclined blade 52 , a second inclined blade 53 and a third inclined blade 56 .

[0029] Both sides of the first vertical blade 51, the second vertical blade 54, the third vertical blade 55, the first inclined blade 52, the second inclined blade 53 and the third inclined blade 56 are welded to the mounting frame 58. Figure 4 , 5 As can be seen from FIG. 6 , the “upper”, “lower”, “left” and “right” of the mounting frame 58 are all equipped with panels for blade installation, while the “front” and “rear” of the mounting frame 58 are hollowed out to allow air to circulate.

[0030] The first inclined blade 52 and the second inclined blade 53 are symmetrically arranged about the first vertical blade 51, and the upper parts of the first inclined blade 52 and the second inclined blade 53 are connected to the first vertical blade 51, the upper part of the second vertical blade 54 is connected to the lower part of the first inclined blade 52, the third vertical blade 55 is installed between the second inclined blade 53 and the dustproof net 57, and a avoidance space for ventilation is reserved between the third vertical blade 55 and the second inclined blade 53, the upper part of the third inclined blade 56 is connected to the third vertical blade 55, and a avoidance space for ventilation is reserved between the third inclined blade 56 and the second inclined blade 53, and a avoidance space for ventilation is reserved between the third inclined blade 56 and the first vertical blade 51 in an adjacent group of dust shielding components.

[0031] When dusty air flows through the high protection shutter 5, the second vertical blade 54, the second inclined blade 53 and the third inclined blade 56 block the dust in sequence. Compared with the original short straight air duct, most of the dust can be blocked, and the protection level is high.

[0032] Exemplarily, a first ventilation duct is reserved between the charging module 9 and the silencer 8; a second ventilation duct is reserved between the charging module 9 and the right door 3; a third ventilation duct is reserved between the charging module 9 and the left door 4; and a fourth ventilation duct is reserved between the charging module 9 and the heat dissipation cabin 11.

[0033] The first ventilation duct, the second ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct, and the first ventilation duct, the third ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct.

[0034] After the natural wind enters the charging cabin 6 through the high-protection shutters 5 on the right-opening door 3, it passes through the "S"-shaped air duct formed by the first ventilation duct, the second ventilation duct and the fourth ventilation duct before being discharged out of the charging cabin 6. After the natural wind enters the charging cabin 6 through the high-protection shutters 5 on the left-opening door 4, it passes through the "S"-shaped air duct formed by the first ventilation duct, the third ventilation duct and the fourth ventilation duct before being discharged out of the charging cabin 6. The design of the "S"-shaped air duct extends the heat dissipation air duct and effectively reduces the generation of noise.

[0035] Exemplarily, the inner wall of the muffler barrel 8 is provided with a sound absorbing material 10, and the deflection muffler cover 13 is provided with a sound absorbing material, which effectively reduces the noise in the air inlet and outlet areas and reduces the propagation of noise.

[0036] Exemplarily, the right door 3 is provided with sound insulation material near the second ventilation duct; The left door 4 is provided with sound insulation material near the third ventilation duct.

[0037] The present invention also provides a control method for a low-noise and high-protection DC charger, the method comprising: The controller obtains the temperature information in the charging compartment 7 through the temperature sensor; The controller determines whether the temperature in the charging compartment 7 is greater than or equal to a preset first temperature threshold according to the temperature information in the charging compartment 7; If it is determined that the temperature in the charging compartment 7 is lower than the preset first temperature threshold, no control signal is sent, and the cooling fan 12 is not controlled to turn on; If it is determined that the temperature in the charging compartment 7 is greater than or equal to a preset first temperature threshold, a control signal is sent to control the cooling fan 12 to turn on.

[0038] It should be noted that the terms "first, second" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0039] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0040] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0041] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing such systems. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the description of the above specific languages ​​is for disclosing the best mode of the present invention.

[0042] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0043] Similarly, it should be understood that in order to simplify the present disclosure and help understand one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. More specifically, inventive aspects lie in less than all the features of a single embodiment disclosed above.

[0044] Those skilled in the art will appreciate that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition they can be divided into multiple submodules or subunits or subassemblies. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification and all processes or units of any method or device disclosed in this manner can be combined in any combination. Unless otherwise clearly stated, each feature disclosed in this specification can be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0045] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, any one of the claimed embodiments may be used in any combination.

Claims

1. A low-noise and high-protection DC charger, the DC charger comprising a cabinet (1), a charging module (9) being arranged in the cabinet (1), characterized in that: The inner cavity of the cabinet (1) is divided into an electrical compartment (6) and a charging compartment (7) by front and rear compartment partitions; The front wall of the electrical compartment (6) is provided with a front-opening door (2); A right door (3) and a left door (4) are respectively provided on the side walls of the charging compartment (7); hollow openings are provided on the side walls of the right door (3) and the left door (4); and high-protection shutters (5) are installed on the hollow openings; A silencer barrel (8) is provided in the charging cabin (7), the silencer barrel (8) being a rectangular sleeve, and the silencer barrel (8) is sleeved on a high-protection shutter (5) extending into the charging cabin (7); The charging module (9) is arranged in the middle of the charging compartment (7) and is located obliquely above the muffler barrel (8); A heat dissipation compartment (11) is also provided in the charging compartment (7), and the heat dissipation compartment (11) is located above the charging module (9); A cooling fan (12) is arranged in the cooling chamber (11); An air outlet of the cooling fan (12) is provided on the rear wall of the charging cabin (7); the air outlet is provided at a height lower than the cooling cabin (11); and a reversing silencer cover (13) is provided on the upper cover of the air outlet; A temperature sensor and a controller are provided in the charging compartment (7); The controller is connected to a temperature sensor for monitoring the temperature in the charging compartment (7); The controller is also connected to the cooling fan (12) and is used to control the operating state of the cooling fan (12).

2. The low-noise and high-protection DC charger according to claim 1, characterized in that: The high-protection shutter (5) comprises a rectangular mounting frame (58), wherein a plurality of groups of dust-blocking components are mounted in the mounting frame (58), wherein the plurality of groups of dust-blocking components are arranged in a vertical direction, and two adjacent groups of dust-blocking components form a "maze"-shaped air inlet; The dust blocking assembly comprises a first vertical blade (51), a second vertical blade (54), a third vertical blade (55), a first inclined blade (52), a second inclined blade (53) and a third inclined blade (56); Both sides of the first vertical blade (51), the second vertical blade (54), the third vertical blade (55), the first inclined blade (52), the second inclined blade (53) and the third inclined blade (56) are welded to the mounting frame (58); The first inclined blade (52) and the second inclined blade (53) are symmetrically arranged with respect to the first vertical blade (51), and the upper parts of the first inclined blade (52) and the second inclined blade (53) are both connected to the first vertical blade (51), the upper part of the second vertical blade (54) is connected to the lower part of the first inclined blade (52), the third vertical blade (55) is installed on a side of the second inclined blade (53) away from the second vertical blade (54), and a ventilation avoidance space is reserved between the third vertical blade (55) and the second inclined blade (53), the upper part of the third inclined blade (56) is connected to the third vertical blade (55), a ventilation avoidance space is reserved between the third inclined blade (56) and the second inclined blade (53), and a ventilation avoidance space is reserved between the third inclined blade (56) and the first vertical blade (51) in an adjacent group of dust shielding components.

3. The low-noise and high-protection DC charger according to claim 2, characterized in that: A first ventilation duct is reserved between the charging module (9) and the muffler barrel (8); A second ventilation duct is reserved between the charging module (9) and the right door (3); A third ventilation duct is reserved between the charging module (9) and the left door (4); A fourth ventilation duct is reserved between the charging module (9) and the heat dissipation cabin (11); The first ventilation duct, the second ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct, and the first ventilation duct, the third ventilation duct and the fourth ventilation duct constitute an "S"-shaped duct.

4. The low-noise and high-protection DC charger according to claim 3, characterized in that: A sound absorbing material (10) is provided on the inner wall of the muffler barrel (8).

5. The low-noise and high-protection DC charger according to claim 4, characterized in that: The right door (3) is provided with sound insulation material near the second ventilation duct; The left door (4) is provided with sound insulation material near the third ventilation duct.

6. The low-noise and high-protection DC charger according to claim 2, characterized in that: A dustproof net (57) is provided on a mounting frame (58) extending into the charging compartment (7).

7. The low-noise and high-protection DC charger according to claim 6, characterized in that: The direction-changing sound-absorbing cover (13) is provided with sound-absorbing material.

8. A control method for a low-noise and high-protection DC charger, characterized in that: The method comprises: The controller obtains temperature information in the charging compartment (7) through a temperature sensor; The controller determines, based on the temperature information in the charging compartment (7), whether the temperature in the charging compartment (7) is greater than or equal to a preset first temperature threshold; If it is determined that the temperature in the charging compartment (7) is lower than a preset first temperature threshold, no control signal is sent, and the cooling fan (12) is not controlled to turn on; If it is determined that the temperature in the charging compartment (7) is greater than or equal to a preset first temperature threshold, a control signal is sent to control the cooling fan (12) to turn on.

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