Heat dissipation device

Abstract

The utility model provides a heat radiation device comprising a heat radiation assembly used for heat radiation of an electric power conversion power module, and the heat radiation assembly comprises a water cooling groove body and a water cooling machine. According to the heat dissipation device provided by the utility model, the arranged heat dissipation assembly mainly comprises the water cooling groove body, the water cooling machine, the cooling liquid heat dissipation device, the water pump and the heat dissipation fan, heat dissipation is carried out on the electric power conversion power module in a mode of combining air cooling and liquid cooling, and the heat dissipation effect is good; in addition, a water cooling machine, a cooling liquid radiator, a water pump and a cooling fan can be all installed on the outer side wall of the equipment cabinet, the electric power conversion power module is installed in the equipment cabinet, and the working performance of the electric power conversion power module is not affected. And dust can be prevented from entering the equipment cabinet when the cooling fan works, so that the adverse effect of the dust on the working performance of the electric power conversion power module is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power semiconductor device cooling, and specifically relates to a heat dissipation device. Background Technique

[0002] A power conversion power module is a device capable of performing power conversion in a power system. It integrates various power devices, such as IGBTs, MOSFETs, etc., as well as necessary control circuits and heat dissipation devices. The goal of these modules is to convert the power supply from one form to another while minimizing energy loss. The main functions are as follows:

[0003] Power conversion: The power module can convert electrical energy to meet the needs of different devices. For example, a transformer can convert high-voltage electrical energy into low-voltage electrical energy suitable for household use; an inverter can convert direct current electrical energy into alternating current electrical energy to meet the needs of various electric devices.

[0004] Protection function: The power module also includes functions such as overload protection and short-circuit protection to protect the safe and stable operation of the power system.

[0005] Control function: By controlling and regulating the power system, the power module can ensure the normal operation of the system and achieve high-efficiency conversion control.

[0006] Working principle: The power module mainly consists of a power amplifier and its cooperating drive circuit, protection circuit, and control circuit. When receiving a control signal, the input control circuit amplifies the signal and inputs it into the power amplifier to drive the load to work. At the same time, the protection circuit can monitor the working state of the circuit and feedback error information to ensure the safe and stable operation of the system.

[0007] Power conversion power modules are widely used in various fields, including the home appliance industry, automotive industry, power industry, and industrial automation, etc. For example, in the home appliance industry, the power module is mainly used to control the switch and regulation of electrical appliances; in the automotive industry, the power module can convert the low-voltage signal output by the battery into a high-voltage signal to drive the motor of an electric vehicle; in the power industry, the power module is mainly used for power conversion and regulation to ensure the stable and efficient operation of the power system.

[0008] During the operation of the power conversion power module, a large amount of heat will be dissipated. At present, a cooling fan is mostly used to directly cool the power conversion power module. In the actual operation process, it is found that the air-cooling effect is not good, and the power conversion power module is still in a high-temperature state during operation, which affects its working performance. In addition, the power conversion power module is mostly installed in the equipment cabinet, so generally the cooling fan is installed on the side wall of the equipment cabinet, which causes dust to enter the inside of the equipment cabinet through the cooling fan during operation, and the dust accumulated for a long time will also affect the working performance of the power conversion power module.

[0009] Therefore, a heat dissipation device is proposed. Utility Model Content

[0010] The purpose of the present utility model is to solve the problems raised in the background technology, and provides a heat dissipation device.

[0011] The specific technical solutions are as follows:

[0012] A heat dissipation device, comprising:

[0013] A heat dissipation component for dissipating heat from the power conversion power module, the heat dissipation component includes a water-cooling tank body and a water chiller, wherein:

[0014] The water-cooling tank body is fixedly installed on the upper part of the base through a bracket, and water inlet connectors and water return connectors are respectively communicated at both ends of the water-cooling tank body;

[0015] A coolant radiator and a water pump are fixedly installed inside the water chiller, and a cooling fan for dissipating heat from the coolant radiator is embedded on one side wall of the water chiller. An air inlet is opened on the side wall of the water chiller, and a water inlet connector and a water outlet connector are fixedly installed on the side wall of the water chiller;

[0016] The water inlet of the water pump is communicated with the water outlet of the coolant radiator through a pipeline, the water outlet connector is communicated with the water outlet of the water pump through a pipeline, the water inlet connector is communicated with the water return port of the coolant radiator through a pipeline, the water outlet connector is communicated with the water inlet connector through a water delivery pipe, and the water inlet connector is communicated with the water return connector through a water return pipe.

[0017] As a preferred scheme of the present utility model, the water-cooling tank body is an aluminum alloy tank body.

[0018] As a preferred scheme of the present utility model, at least two cooling fans are provided.

[0019] As a preferred scheme of the present utility model, both the water return pipe and the water delivery pipe are rubber hoses.

[0020] As a preferred embodiment of the present utility model, a first temperature control switch connected in series with the water pump is fixedly installed on the outer wall of the water cooling tank body.

[0021] As a preferred embodiment of the present utility model, a second temperature control switch connected in series with the cooling fan is fixedly installed inside the water cooler.

[0022] The present utility model has the following beneficial effects:

[0023] The heat dissipation device provided by the present utility model, the provided heat dissipation components mainly include a water cooling tank body, a water cooler, a coolant radiator, a water pump and a cooling fan. The air cooling and liquid cooling are combined to dissipate heat for the power conversion power module, and the heat dissipation effect is better. It can avoid the power conversion power module being in a high temperature state during operation, which affects its working performance. In addition, the water cooler, the coolant radiator, the water pump and the cooling fan can be installed on the outer wall of the equipment cabinet, and the power conversion power module can be installed inside the equipment cabinet, which can avoid dust entering the equipment cabinet when the cooling fan is working, thus avoiding the adverse effect of dust on the working performance of the power conversion power module. Description of the Drawings

[0024] Figure 1 is an application schematic diagram of the heat dissipation device provided by the embodiment of the present utility model;

[0025] Figure 2 is a partial application schematic diagram of the heat dissipation device provided by the embodiment of the present utility model Figure 1 ;

[0026] Figure 3 is a partial structural schematic diagram of the heat dissipation device provided by the embodiment of the present utility model Figure 1 ;

[0027] Figure 4 is a partial structural schematic diagram of the heat dissipation device provided by the embodiment of the present utility model Figure 2 ;

[0028] Figure 5 is a partial application schematic diagram of the heat dissipation device provided by the embodiment of the present utility model Figure 2 ;

[0029] Figure 6 is a partial structural schematic diagram of the heat dissipation device provided by the embodiment of the present utility model Figure 3 ;

[0030] Figure 7 is a schematic diagram of the temperature change and the cooling fan speed curve in the heat dissipation device provided by the embodiment of the present utility model.

[0031] In the drawings:

[0032] 1. Base; 2. Bracket; 3. Insulating column; 4. Output copper busbar; 5. Hall current sensor; 6. Control board; 7. Inlet water joint; 8. Water-cooling tank body; 9. Stacked busbar; 10. Capacitor; 11. Cooling fan; 12. Water pump; 13. Outlet joint; 14. Inlet joint; 15. Coolant radiator; 16. Water chiller; 17. Return pipe; 18. Water supply pipe; 19. Return pipe joint. Detailed implementation manners

[0033] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific implementation manners.

[0034] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0035] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] In the description of the present utility model, unless otherwise clearly defined and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] Embodiment

[0038] The heat dissipation device provided in this embodiment, as Figures 1-7 shown, includes: a heat dissipation component for dissipating heat from the power conversion power module.

[0039] Among them, the heat dissipation component includes a water-cooling tank body 8 and a water chiller 16;

[0040] The water-cooled tank body 8 is fixedly installed on the upper part of the base 1 through the bracket 2, and a water inlet joint 7 and a water return joint 19 are respectively communicated and arranged at both ends of the water-cooled tank body 8;

[0041] Inside the water cooler 16, a coolant radiator 15 and a water pump 12 are fixedly installed. And on one side wall of the water cooler 16, a cooling fan 11 for dissipating heat from the coolant radiator 15 is embedded. An air inlet is provided on the side wall of the water cooler 16, and a water inlet joint 14 and a water outlet joint 13 are fixedly installed on the side wall of the water cooler 16;

[0042] The water inlet of the water pump 12 is communicated with the water outlet of the coolant radiator 15 through a pipeline. The water outlet joint 13 is communicated with the water outlet of the water pump 12 through a pipeline. The water inlet joint 14 is communicated with the water return port of the coolant radiator 15 through a pipeline. The water outlet joint 13 is communicated with the water inlet joint 7 through a water delivery pipe 18. The water inlet joint 14 is communicated with the water return joint 19 through a water return pipe 17.

[0043] Among them, the power conversion power module is installed inside the equipment cabinet. The power conversion power module includes a control board 6 fixedly installed on the upper part of the water-cooled tank body 8, a Hall current sensor 5 fixedly installed on the control board 6, an output copper bar 4 fixedly installed on the upper part of the bracket 2 through an insulating column 3, a capacitor 10 fixedly installed on the upper part of the base 1, and a laminated busbar 9 fixedly installed on the upper part of the capacitor 10. Among them, one end of the output copper bar 4 is connected to the Hall current sensor 5.

[0044] Among them, the water cooler 16, the coolant radiator 15, the water pump 12 and the cooling fan 11 are all installed on the outer side wall of the equipment cabinet.

[0045] The heat dissipation assembly set in this embodiment mainly includes a water-cooled tank body 8, a water cooler 16, a coolant radiator 15, a water pump 12 and a cooling fan 11. The air-cooling and liquid-cooling combined method is used to dissipate heat from the power conversion power module, and the heat dissipation effect is better. It can prevent the power conversion power module from being in a high-temperature state during operation and affecting its working performance. In addition, the water cooler 16, the coolant radiator 15, the water pump 12 and the cooling fan 11 can all be installed on the outer side wall of the equipment cabinet, and the power conversion power module can be installed inside the equipment cabinet, which can prevent dust from entering the equipment cabinet when the cooling fan 11 is working, thereby avoiding the adverse effect of dust on the working performance of the power conversion power module.

[0046] In order to ensure the heat conduction effect of the water-cooled tank body 8, the set water-cooled tank body 8 is an aluminum alloy tank body.

[0047] In order to ensure the heat dissipation effect, at least two cooling fans 11 are provided.

[0048] To ensure the service life of the return water pipe 17 and the water delivery pipe 18 and facilitate bending to adapt to installation, both the return water pipe 17 and the water delivery pipe 18 are made of rubber hoses.

[0049] To enable the water pump 12 to automatically start when the temperature of the water-cooling tank 8 is greater than the set value, a first temperature control switch connected in series with the water pump 12 is fixedly installed on the outer wall of the water-cooling tank 8.

[0050] To enable the cooling fan 11 to automatically start when the temperature inside the water-cooling machine 16 is greater than the set value, a second temperature control switch connected in series with the cooling fan 11 is fixedly installed inside the water-cooling machine 16.

[0051] It is worth noting that the first temperature control switch and the second temperature control switch can also be replaced by temperature sensors, which are respectively installed at the water inlet joint 7 and the return water joint 19 at both ends of the water-cooling tank 8. The temperature sensors, the cooling fan 11, and the water pump 12 can be electrically connected to the controller in the power conversion power system to control the automatic operation of the cooling device.

[0052] In summary, the cooling device provided in this embodiment has the following advantages:

[0053] The provided cooling assembly mainly includes a water-cooling tank 8, a water-cooling machine 16, a coolant radiator 15, a water pump 12, and a cooling fan 11. The combined method of air cooling and liquid cooling is used to cool the power conversion power module, and the cooling effect is better. It can prevent the power conversion power module from being in a high-temperature state during operation, which affects its working performance. In addition, the water-cooling machine 16, the coolant radiator 15, the water pump 12, and the cooling fan 11 can all be installed on the outer side wall of the equipment cabinet, and the power conversion power module can be installed inside the equipment cabinet, which can prevent dust from entering the equipment cabinet when the cooling fan 11 is working, thus avoiding the adverse effect of dust on the working performance of the power conversion power module.

[0054] During use, the water-cooling machine 16, the coolant radiator 15, the water pump 12, and the cooling fan 11 are all installed on the outer side wall of the equipment cabinet, and the power conversion power module is installed inside the equipment cabinet. Coolant or water is added to the coolant radiator 15. When the temperature of the water-cooling tank 8 is greater than the set value, the first temperature control switch conducts, causing the water pump 12 to automatically start and pump the coolant or water in the coolant radiator 15 into the inside of the water-cooling tank 8 for continuous circulation, to cool the power conversion power module inside the equipment cabinet to ensure the long-term stable operation of the power conversion power module. At the same time, when the temperature inside the water-cooling machine 16 is greater than the set value (such as 20 °C), the second temperature control switch conducts, causing the cooling fan 11 to automatically start to cool the coolant radiator 15 inside the water-cooling machine 16, so as to improve the cooling effect of the cooling assembly on the power conversion power module.

[0055] like Figure 7 As shown, L is the fan start-up temperature, H is the fan full-speed temperature, and G can be freely set to a high temperature value > H, which is only used to indicate the temperature change.

[0056] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation device, characterized in that: include: A heat dissipation component for dissipating heat for an electric power conversion power module, the heat dissipation component comprising a water cooling tank (8) and a water cooling machine (16), wherein: The water-cooling tank body (8) is fixedly mounted on the upper part of the base (1) via a bracket (2), and two ends of the water-cooling tank body (8) are respectively connected with a water inlet pipe joint (7) and a water return pipe joint (19); A coolant radiator (15) and a water pump (12) are fixedly installed inside the water cooler (16), and a heat dissipation fan (11) for dissipating heat for the coolant radiator (15) is embedded on one side wall of the water cooler (16), an air inlet is provided on the side wall of the water cooler (16), and a water inlet joint (14) and a water outlet joint (13) are fixedly installed on the side wall of the water cooler (16); The water inlet of the water pump (12) is connected to the water outlet of the coolant radiator (15) through a pipeline, the water outlet joint (13) is connected to the water outlet of the water pump (12) through a pipeline, the water inlet joint (14) is connected to the water return port of the coolant radiator (15) through a pipeline, the water outlet joint (13) is connected to the water inlet pipe joint (7) through a water delivery pipe (18), and the water inlet joint (14) is connected to the water return pipe joint (19) through a return pipe (17).

2. The heat dissipation device according to claim 1, characterized in that: The water-cooling tank body (8) is an aluminum alloy tank body.

3. The heat dissipation device according to claim 1, characterized in that: At least two heat dissipation fans (11) are provided.

4. The heat dissipation device according to claim 1, characterized in that: The water return pipe (17) and the water delivery pipe (18) are both rubber hoses.

5. The heat dissipation device according to claim 1, characterized in that: A first temperature control switch connected in series with the water pump (12) is fixedly mounted on the outer wall of the water cooling tank (8).

6. The heat dissipation device according to claim 5, characterized in that: A second temperature control switch connected in series with the heat dissipation fan (11) is fixedly installed inside the water cooler (16).

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