Heat dissipation device and charger

Abstract

The present invention provides a heat dissipation device and a charger, which are provided with a ventilation duct and a fan, wherein the ventilation duct is provided with two air inlets, and an air outlet is provided between the two air inlets, and the fan is connected to the air outlet of the ventilation duct; wherein, between each of the air inlet and the air outlet, there is a mounting port for connecting to a heat dissipation port of a heat dissipation component to be dissipated, thereby improving the heat dissipation efficiency of the heat dissipation component to be dissipated.

Description

Technical Field

[0001] The invention relates to mechanical technology, and in particular to a heat dissipation device and a charger. Background Art

[0002] The charger is used in all high-speed railways, motor vehicles, vehicles and related facilities powered by batteries, and is an important power supply equipment. The charger usually includes charging circuits such as input circuit, full-bridge inverter circuit, output circuit and control circuit, involving input filter, contactor, rectifier bridge module, discharge resistor, support capacitor, IGBT module, high-frequency transformer, reactor, anti-reverse diode, current sensor, voltage sensor, driver board, terminal block, control unit and other devices. Since most devices cannot be placed in a humid working environment, they usually need to form a closed cavity with the help of a shell (box) to achieve the need for a high level of protection. Since some devices have heat dissipation requirements, it is usually necessary to design a heat dissipation structure.

[0003] In order to solve the heat dissipation problem in the prior art, a radiator is installed on the back of the charger housing, and the heat is dissipated by natural cooling.

[0004] However, the heat dissipation efficiency of the charger in the prior art is low. Summary of the invention

[0005] The present invention provides a heat dissipation device and a charger, which can improve the heat dissipation efficiency of the heat dissipation device by adopting a forced air cooling method.

[0006] A first aspect of an embodiment of the present invention provides a heat dissipation device, comprising: a ventilation duct and a fan;

[0007] The ventilation duct is provided with two air inlets, and an air outlet is provided between the two air inlets, and the fan is connected to the air outlet of the ventilation duct;

[0008] Wherein, a mounting opening for connecting to a heat dissipation opening of a heat dissipation component is provided between each of the air inlets and the air outlets.

[0009] Optionally, in a possible implementation manner of the first aspect, the air outlet is located at a symmetrical center of the ventilation duct between the two air inlets.

[0010] Optionally, in a possible implementation manner of the first aspect, the mounting opening is provided with a sealing member for connecting with a heat dissipation opening of the heat dissipation member.

[0011] Optionally, in a possible implementation of the first aspect, the sealing member includes a sealing strip;

[0012] The sealing strip is hollow inside.

[0013] Optionally, in a possible implementation of the first aspect, the fan includes a centrifugal fan and a fan air guide ring;

[0014] The fan air guide ring is located in the ventilation cavity of the centrifugal fan, and a gap is provided between the fan air guide ring and the inner wall of the ventilation cavity.

[0015] Optionally, in a possible implementation of the first aspect, it further includes a box;

[0016] The ventilation duct and the fan are placed in the box;

[0017] The box body is provided with a slide rail for the heat dissipation component to move.

[0018] Optionally, in a possible implementation of the first aspect, an air inlet filter plate is provided at the air inlet.

[0019] Optionally, in a possible implementation of the first aspect, an air outlet filter screen is provided at the air outlet.

[0020] A second aspect of the present invention provides a charger, comprising a charging power module and the above-mentioned heat dissipation device;

[0021] Wherein, the mounting port is connected to the heat dissipation port of the charging power module so that the ventilation duct is connected to the heat dissipation port.

[0022] Optionally, in a possible implementation of the second aspect, two charging power modules are provided, and the two charging power modules are located on the sides of the box body.

[0023] The present solution provides a heat dissipation device and a charger, which are provided with a ventilation duct and a fan, wherein the ventilation duct is provided with two air inlets, and an air outlet is provided between the two air inlets, and the fan is connected to the air outlet of the ventilation duct. It can be understood that under the action of the fan, cooling air enters the ventilation duct from the air inlet of the ventilation duct and is then discharged through the air outlet. Since each of the air inlet and the air outlet is provided with a mounting port for connecting with the heat dissipation port of the heat dissipation component, the heat dissipation air of the heat dissipation component will enter the ventilation duct through the mounting port, and then be carried away by the cooling air and discharged through the air outlet. The present solution can use forced air to cool the heat dissipation component to be cooled, thereby improving the heat dissipation efficiency of the heat dissipation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of a heat dissipation device provided by an embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of a fan of a heat dissipation device provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of a slide rail of a heat dissipation device provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the structure of a charger provided in an embodiment of the present invention.

[0028] Reference numerals

[0029] 1- Ventilation duct;

[0030] 11- Air inlet;

[0031] 111-air inlet filter;

[0032] 12-Air outlet;

[0033] 121-air outlet filter;

[0034] 2- Seals;

[0035] 3- Heat dissipation vent;

[0036] 4-Mounting port;

[0037] 5- fan;

[0038] 51- fan air guide ring;

[0039] 6-Box;

[0040] 61- Charging power module;

[0041] 62-slide rail;

[0042] 63-partition;

[0043] 7-Heat dissipation parts. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0045] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0047] In the description of the present invention, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a system, product or device comprising a series of units is not necessarily limited to those units explicitly listed, but may include other units not explicitly listed or inherent to these products or devices.

[0049] It should be understood that in the present invention, "plurality" means two or more than two. "Including A, B and C" means including all three of A, B and C. "Including A, B or C" means including one of A, B and C. "Including A, B and / or C" means including any one, any two or any three of A, B and C.

[0050] It should be understood that in the present invention, "B corresponding to A", "B corresponding to A", "A corresponds to B" or "B corresponds to A" means that B has a corresponding relationship with the shape or function of A, and B can be determined according to A. Determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and / or other information.

[0051] The charger is used in all high-speed railways, motor vehicles, vehicles and related facilities powered by batteries, and is an important power supply equipment. The charger usually includes charging circuits such as input circuit, full-bridge inverter circuit, output circuit and control circuit, involving input filter, contactor, rectifier bridge module, discharge resistor, support capacitor, IGBT module, high-frequency transformer, reactor, anti-reverse diode, current sensor, voltage sensor, drive board, terminal block, control unit and other devices. Since most devices cannot be placed in a humid working environment, it is usually necessary to use a shell (box) to form a closed cavity to meet the needs of a high protection level. Since some devices have heat dissipation requirements, it is usually necessary to design a heat dissipation structure. In order to solve the heat dissipation problem in the prior art, a radiator is installed on the back of the charger housing, and natural cooling is used to dissipate heat.

[0052] Therefore, the existing charger structure arranges many devices inside the entire shell, and installs a radiator on the back of the shell to adopt natural cooling. Therefore, the radiator is relatively large, and the size and weight of the charger are also large. When the size of the radiator is limited, its heat dissipation efficiency is low, which will cause the total output power of the charger to be limited, generally not exceeding 25kW.

[0053] Therefore, the heat dissipation efficiency of the charger in the prior art is low.

[0054] In order to solve the above technical problems, the present invention provides a heat dissipation device and a charger to improve the heat dissipation efficiency.

[0055] like Figure 1 As shown, Figure 1 The schematic diagram of the structure of a heat dissipation device provided by an embodiment of the present invention includes: a ventilation duct 1 and a fan 5, as follows:

[0056] Among them, the ventilation duct 1 is provided with two air inlets 11, and an air outlet 12 is provided between the two air inlets 11. It can be understood that cooling air can enter the ventilation duct 1 through the air inlet 11, and then be discharged from the ventilation duct 1 through the air outlet 12, forming a flow channel for cooling air.

[0057] In some embodiments, the air inlet 11 may be located at both ends of the ventilation duct 1, and the air outlet 12 may be located in the middle of the ventilation duct 1. Preferably, the air outlet 12 may be located at the symmetrical center of the two air inlets 11 in the ventilation duct 1, that is, the distance between the air outlet 12 and the two air inlets 11 is equal.

[0058] It can be understood that the ventilation duct 1 can be made of metal material or plastic material, for example, aluminum alloy material or carbon steel material. The embodiment of the present invention does not limit the material of the ventilation duct 1.

[0059] In some embodiments, a mounting port 4 for connecting to the heat dissipation port 3 of the heat dissipation element 7 to be cooled is provided between each of the air inlet 11 and the air outlet 12. It can be understood that the mounting port 4 is provided on the ventilation duct 1 and can be communicated with the cooling air flow channel of the ventilation duct 1. In addition, the mounting port 4 is docked with the heat dissipation port 3 of the heat dissipation element 7 to be cooled, and the heat of the heat dissipation element 7 to be cooled is discharged through the heat dissipation port 3, enters the cooling air flow channel formed by the ventilation duct 1 through the mounting port 4, and then is blown away by the cooling air in the ventilation duct 1 and discharged from the air outlet 12, thereby achieving heat dissipation of the heat dissipation element 7 to be cooled.

[0060] It should be noted that the installation port 4 is opened between each of the air inlets 11 and the air outlets 12. Since the cooling air enters the ventilation duct 1 through the air inlet 11 and is discharged through the air outlet 12, that is, the flow process of the cooling air in the ventilation duct 1 is from each air inlet 11 to the air outlet 12. By opening the installation port 4 between each of the air inlet 11 and the air outlet 12, the heat in the heat dissipation port 3 can be quickly discharged through the air outlet 12, thereby improving the heat dissipation efficiency.

[0061] In practical applications, the heat dissipation component 7 can be any object to be cooled, for example, a charger, a generator or other machine, and any machine that needs to dissipate heat can be used as the heat dissipation component 7.

[0062] In some embodiments, the fan 5 is connected to the air outlet 12 of the ventilation duct 1 to provide power for the circulation of the cooling air. It can be understood that under the action of the fan 5, the cooling air forms a flow in the ventilation duct 1.

[0063] Among them, the fan 5 can be a centrifugal fan 5, preferably a centrifugal fan 5 without a volute, and the fan 5 includes a centrifugal fan 5 and a fan air guide ring 51. The fan air guide ring 51 is located in the ventilation cavity of the centrifugal fan 5 and has a gap between it and the inner wall of the ventilation cavity.

[0064] The fan 5 is provided with a fan air guide ring 51 , and a gap is provided between the fan air guide ring 51 and the inner wall of the ventilation cavity, which is beneficial to air flow and reduces airflow noise.

[0065] The heat dissipation device provided in the above embodiment is provided with a ventilation duct 1 and a fan 5, wherein the ventilation duct 1 is provided with two air inlets 11, and an air outlet 12 is provided between the two air inlets 11, and the fan 5 is connected to the air outlet 12 of the ventilation duct 1.

[0066] It can be understood that under the action of the fan 5, the cooling air enters the ventilation duct 1 from the air inlet 11 of the ventilation duct 1, and then is discharged through the air outlet 12. Since each of the air inlet 11 and the air outlet 12 is respectively provided with a mounting port 4 for connecting with the heat dissipation port 3 of the heat component 7 to be cooled, the cooling air of the heat component 7 to be cooled will enter the ventilation duct 1 through the mounting port 4, and then be carried away by the cooling air and discharged from the air outlet 12.

[0067] This solution can utilize forced air to cool the heat dissipation element 7, thereby improving the heat dissipation efficiency of the heat dissipation device.

[0068] Since the installation port 4 is connected to the heat dissipation port 3 of the heat dissipation component 7, if the connection between the installation port 4 and the heat dissipation port 3 of the heat dissipation component 7 is not sealed, the heat of the heat dissipation component 7 will be discharged through the installation port 4 and the heat dissipation port 3, resulting in the heat being unable to enter the ventilation duct 1 to a large extent, so that the heat dissipation efficiency is greatly reduced.

[0069] In order to solve the above technical problems, on the basis of the above embodiments, a sealing member 2 for connecting with the heat dissipation port 3 of the heat dissipation component 7 to be cooled is provided at the installation port 4, so as to achieve sealing at the connection between the installation port 4 and the heat dissipation port 3 of the heat dissipation component 7 to be cooled, as follows:

[0070] One end of the seal 2 is connected to the installation port 4, and the other end is connected to the heat dissipation component 7, so that there is no gap between the installation port 4 and the heat dissipation port 3 of the heat dissipation component 7, and the heat cannot leak out but can only enter the ventilation duct 1, thereby ensuring the heat dissipation efficiency.

[0071] In some embodiments, the connection between the seal 2 and the mounting port 4 and the heat dissipation port 3 can be bonding, for example, bonding can be achieved by using an adhesive, specifically, bonding can be achieved by using silicone. In other embodiments, the connection between the seal 2 and the mounting port 4 and the heat dissipation port 3 can also be fixed connection, for example, connection can be achieved by using screws.

[0072] Specifically, threaded holes can be provided on the mounting port 4, the heat dissipation port 3 and the sealing member 2, and the sampling screws pass through the threaded holes to achieve a fixed connection between the sealing member 2, the mounting port 4 and the heat dissipation port 3, wherein the number of screws is not limited, for example, at least two screws can be used for connection to improve the stability of the connection. The present invention does not limit the connection method.

[0073] In some embodiments, the sealing member 2 may be a sealing strip, and the sealing strip may be made of silicone material or metal material.

[0074] As an example, the sealing strip made of silicone material can be solid or hollow, and a hollow sealing strip is preferred. The hollow structure is conducive to the compression deformation of the sealing strip and has a certain elasticity. On the one hand, it is easy to install, and on the other hand, it can improve the sealing effect.

[0075] Another exemplary embodiment, the metal seal 2 can be made of flexible metal material, such as deformable aluminum alloy. In some embodiments, the metal seal 2 can be a bellows type, which is beneficial to the compression deformation of the sealing strip, which is easy to install on the one hand and can improve the sealing effect on the other hand.

[0076] In the above embodiment, a seal 2 for connecting with the heat dissipation port 3 of the heat dissipation component 7 is provided at the installation port 4 to achieve sealing at the connection between the installation port 4 and the heat dissipation port 3 of the heat dissipation component 7, so that heat can completely enter the ventilation duct 1 to ensure heat dissipation efficiency.

[0077] In order to provide storage space for the ventilation duct 1 and the fan 5, on the basis of the above embodiment, a box 6 is further included, and the ventilation duct 1 and the fan 5 are placed in the box 6, specifically as follows:

[0078] In some embodiments, the air inlet 11 and the air outlet 12 of the ventilation duct 1 can be extended to the outside of the box 6, so that the air inlet 11 and the air outlet 12 of the ventilation duct 1 are connected to the outside world, and cooling air can enter the ventilation duct 1 from the outside world, and then be discharged from the ventilation duct 1 through the air outlet 12, so that heat will not enter the inside of the box 6.

[0079] like Figure 2 As shown, Figure 2This is a schematic diagram of the structure of a fan of a heat dissipation device provided by an embodiment of the present invention. In practical applications, a partition 63 may be provided inside the box 6 to divide the box 6 into three compartments, namely, left, middle, and right. The left and right compartments may be used to place heat dissipating elements, and the middle compartment may be used to place the fan 5. The fan 5 may be hoisted at the top of the box 6, for example, a hoisting bracket may be fixed at the top of the box 6, and the fan 5 is mounted on the hoisting bracket.

[0080] like Figure 3 As shown, Figure 3 A schematic diagram of the structure of a slide rail of a heat dissipation device provided in an embodiment of the present invention. In some embodiments, a slide rail 62 for moving the heat dissipation component 7 may be provided at the bottom of the box body 6, and the heat dissipation component 7 may move along the slide rail 62.

[0081] For example, the heat dissipating element 7 can be pulled out of the box 6, so as to conveniently perform maintenance on the heat dissipating element 7. In other embodiments, the slide rails 62 can be arranged in the left compartment and the right compartment, so as to better cooperate with the heat dissipating element 7.

[0082] It can be understood that the side wall of the box body 6 can be detachable, so as to facilitate the heat dissipation element 7 to be moved out of the box body 6 along the slide rail 62 .

[0083] For example, the side wall of the box 6 can be hinged to the box 6. When the heat sink 7 needs to be inspected, the side wall of the box 6 can be opened, and then the heat sink 7 can be moved out of the box 6 along the slide rail 62.

[0084] In practical applications, the slideway is a stainless steel plate structure, which is riveted to the bottom of the box body 6 by blind rivets. The number of blind rivets is not limited, and the operation is convenient.

[0085] In the above embodiment, the ventilation duct 1 and the fan 5 are placed in the box 6 to provide storage space for the ventilation duct 1 and the fan 5 , and a slide is provided to facilitate operators to perform maintenance on the heat dissipation element 7 .

[0086] Since there may be dust, debris and other debris in the air outside the box 6, if no measures are taken, the debris will enter the ventilation duct 1 through the air inlet 11 and then enter the fan 5, causing the ventilation duct 1 and the fan 5 to be blocked and damaged.

[0087] In order to solve the above technical problems, on the basis of the above embodiments, an air inlet 11 filter screen may be provided at the air inlet 11, specifically as follows:

[0088] The filter screen provided at the air inlet 11 can intercept debris outside the ventilation duct 1 to prevent it from entering the ventilation duct 1 .

[0089] In practical applications, the filter screen plate of the air inlet 11 can be fixedly connected to the ventilation duct 1 or detachably connected to the ventilation duct 1 .

[0090] The fixed connection may be connected to the ventilation duct 1 by welding. The detachable connection may be connected by bonding or screwing. For example, threaded holes may be provided on the ventilation duct 1 and the filter screen plate of the air inlet 11, and then screws may be passed through the threaded holes to achieve a detachable connection between the filter screen plate of the air inlet 11 and the ventilation duct 1.

[0091] In some embodiments, an air outlet 12 filter screen may be provided at the air outlet 12 to prevent external debris from entering the box body 6 through the air outlet 12 .

[0092] The above embodiment can prevent external debris from entering the box body 6, the ventilation duct 1 and the fan 5 by providing the filter screen plate at the air inlet 11 and the filter screen plate at the air outlet 12, thereby ensuring the normal operation of the device and improving the stability of the device.

[0093] like Figure 4 As shown, Figure 4 The overall schematic diagram of a charger provided by an embodiment of the present invention includes: a charging power module 61, and a heat dissipation device of the above embodiment, specifically as follows:

[0094] The charging power module 61 is the main component of the charger, wherein the mounting port 4 is connected to the heat dissipation port 3 of the charging power module 61 so that the ventilation duct 1 is connected to the heat dissipation port 3, that is, the heat of the charging power module 61 is discharged through the heat dissipation port 3, and then enters the ventilation duct 1 through the mounting port 4 and is carried away by the cooling wind, thereby realizing the heat dissipation of the charging power module 61.

[0095] In some embodiments, two charging power modules 61 may be provided, respectively disposed in the left and right compartments in the above embodiments.

[0096] In other embodiments, the charging power module 61 may be slidably connected to the slide rail 62 , and when the operator needs to inspect the charging power module 61 , the charging power module 61 can be moved out of the box 6 along the slide rail 62 .

[0097] In practical applications, the box body 6 can be made of aluminum alloy, which is beneficial to reducing the overall weight of the charger and improving the weight power density, which can reach 0.1052kW / kg.

[0098] The forced air cooling method of the present invention is conducive to improving the output power and compactness of the charger. The rated output power can reach 60kW and the volume power density can reach 35.4777kW / m 3 .

[0099] In the description of the present invention, it is necessary to understand that the terms used such as “center”, “length”, “width”, “thickness”, “top”, “bottom”, “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, “circumferential”, etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred position or component must have a specific direction, a specific structure and operation, and therefore cannot be understood as limiting the present invention.

[0100] In the present invention, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, so that the internal connectivity of two elements or the interaction relationship between the two elements can be achieved.

[0101] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the present invention, unless otherwise clearly stipulated and limited, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0103] Moreover, the first feature being “above”, “above” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being “below”, “below” and “below” the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it.

[0105] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation device, characterized in that: include: Ventilation ducts and fans; The ventilation duct is provided with two air inlets, and an air outlet is provided between the two air inlets, and the fan is connected to the air outlet of the ventilation duct; Wherein, between each of the air inlet and the air outlet, there is a mounting port for connecting to the heat dissipation port of the heat dissipation component; The installation port is provided with a sealing member for connecting with the heat dissipation port of the heat dissipation component; the sealing member comprises a sealing strip; the sealing strip is hollow inside; The fan comprises a centrifugal fan and a fan air guide ring; the fan air guide ring is located in a ventilation cavity of the centrifugal fan and a gap is provided between the fan air guide ring and the inner wall of the ventilation cavity.

2. The heat dissipation device according to claim 1, characterized in that: The air outlet is located at the symmetrical center of the two air inlets in the ventilation duct.

3. The heat dissipation device according to claim 1, characterized in that: Also includes a box; The ventilation duct and the fan are placed in the box; The box body is provided with a slide rail for the heat dissipation component to move.

4. The heat dissipation device according to claim 1, characterized in that: An air inlet filter screen is provided at the air inlet.

5. The heat dissipation device according to claim 1 or 4, characterized in that: An air outlet filter screen is provided at the air outlet.

6. A charger, characterized in that: Comprising a charging power module and a heat dissipation device according to any one of claims 1 to 5; Wherein, the mounting port is connected to the heat dissipation port of the charging power module so that the ventilation duct is connected to the heat dissipation port.

7. The charger according to claim 6, characterized in that: There are two charging power modules, and the two charging power modules are located on the sides of the box.

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