CN210120133U - Liquid cooling box and power electronic equipment - Google Patents

Abstract

The embodiment of the utility model provides a liquid cooling box and power electronic equipment, the liquid cooling box includes upper cover, main tank body and lower cover, and be formed with the main cavity room that is used for installing electronic component between main tank body and the upper cover, be formed with the coolant liquid chamber between main tank body and the lower cover; the cooling liquid cavity comprises a main flow channel, a first peripheral flow channel and a second peripheral flow channel, at least two first water nozzles are arranged on the main box body and/or the lower cover, and at least two second water nozzles are also arranged on the main box body and/or the lower cover; each first water nozzle is communicated with one end of the main flow channel through the first peripheral flow channel, and each second water nozzle is communicated with the other end of the main flow channel through the second peripheral flow channel. The embodiment of the utility model provides a through setting up first peripheral runner, the peripheral runner of second, a plurality of first water injection well choke and a plurality of second water injection well choke, can select the hookup location of outside coolant liquid pipeline in a flexible way as required to satisfy different application scenarios.

Description

Liquid cooling box and power electronic equipment

Technical Field

The embodiment of the utility model provides a relate to power electronic equipment field, more specifically say, relate to a liquid cooling box and power electronic equipment.

Background

The power electronic technology mainly relates to the control and conversion (including rectification, inversion, chopping, frequency conversion and equalization) of a power supply by a semiconductor switch starting device. Due to the environmental, energy, social and high-efficiency requirements, power electronic devices and systems are developing towards high-frequency, intelligent, full-digital control, systemization and greening of application technologies. In power electronic equipment (such as a high-voltage direct-current power supply, a motor controller and the like), a semiconductor switching device generally operates in a large current state, and a large amount of heat is generated in the operation due to the existence of volume resistance (generated by a built-in electric field of a semiconductor silicon material and a P-N junction) and contact resistance (determined by the connection mode of internal devices and the connection of external circuit wires).

In order to ensure the normal operation of the power generation electronic equipment, the heat generated by the semiconductor switching device during operation needs to be dissipated in time. At present, in order to realize heat dissipation of semiconductor switching devices, power electronic equipment generally adopts a die-casting box body, and a heat dissipation water channel is integrated in the box body, so that heat dissipation of the semiconductor switching devices and other electronic elements in the box body can be realized through cooling liquid flowing through the heat dissipation water channel.

However, in the above-described tank, the heat radiation water passages are generally formed at the time of die casting of the tank and connected to the external cooling liquid pipe through the water nozzle. Once the die-casting of box is accomplished, the position that is used for connecting the water injection well choke of heat dissipation water course can't change to one set of die-casting box only satisfies a water injection well choke position definition. If the position of the water nozzle of the heat dissipation water channel needs to be changed, the box body or the cover plate needs to be machined again, or other structural components are added to change the structure of the water channel, so that the process is complex, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a to the water injection well choke rigidity of above-mentioned power electronic equipment's heat dissipation water course, can't satisfy different connection requirements to and change the problem that the hookup location technology is complicated, the cost is higher, provide a liquid cooling box and power electronic equipment.

The embodiment of the present invention provides a liquid cooling box, which includes an upper cover, a main box and a lower cover, wherein a main chamber for installing electronic components is formed between the main box and the upper cover, and a cooling liquid chamber is formed between the main box and the lower cover; the cooling system is characterized in that the cooling liquid cavity comprises a main flow channel, a first peripheral flow channel and a second peripheral flow channel, at least two first water nozzles are arranged on the main box body and/or the lower cover, and at least two second water nozzles are also arranged on the main box body and/or the lower cover; each first water nozzle is communicated with one end of the main flow channel through the first peripheral flow channel, and each second water nozzle is communicated with the other end of the main flow channel through the second peripheral flow channel.

Preferably, the first peripheral flow passage and the second peripheral flow passage are disposed around the main flow passage in a plane parallel to the lower cover.

Preferably, the cooling liquid cavity is located at the bottom of the main box body, and the first peripheral flow channel and the second peripheral flow channel are respectively arranged adjacent to at least one side wall of the main box body; the first water nozzle is positioned on the side wall and/or the lower cover of the main box body adjacent to the first peripheral flow channel, and the second water nozzle is positioned on the side wall and/or the lower cover of the main box body adjacent to the second peripheral flow channel.

Preferably, the first peripheral flow channel and the second peripheral flow channel are respectively formed by grooves on the lower surface of the bottom plate of the main box body, and the main flow channel, the first peripheral flow channel and the second peripheral flow channel are formed by one-time die casting with the main box body.

Preferably, the main box body comprises a first side wall, a second side wall, a third side wall and a fourth side wall which are respectively vertical to the lower cover and sequentially connected end to end; the first peripheral flow channel is respectively adjacent to the first side wall, the second side wall and the third side wall, and at least two of the first side wall, the second side wall, the third side wall and the lower cover are provided with the first water nozzle.

Preferably, the second peripheral flow passage is adjacent to the first side wall, the third side wall and the fourth side wall respectively, and at least two of the first side wall, the third side wall, the fourth side wall and the lower cover are provided with the second water nozzle.

Preferably, the main flow channel, the first peripheral flow channel and the second peripheral flow channel are separated by ribs protruding from the lower surface of the bottom plate of the main box body, the side wall of the main box body protrudes from the lower surface of the bottom plate, a part of the side wall of the main box body protruding from the lower surface of the bottom plate is provided with a square step, and the lower cover is fixedly mounted on the square step.

Preferably, the first peripheral flow channel and the second peripheral flow channel are respectively located between the rib and a part of the side wall of the main box body protruding from the bottom plate.

Preferably, a first sealing rubber strip is arranged between the top surface of the rib and the lower cover, and a second sealing rubber strip is arranged between the step surface of the square step and the lower cover.

The embodiment of the utility model provides a still provide a power electronic equipment, include as above arbitrary the liquid cooling box.

The utility model discloses liquid cooling box and power electronic equipment, through setting up first peripheral runner, second peripheral runner, respectively via a plurality of first water injection well choke that first peripheral runner links to each other with the one end of sprue and respectively via a plurality of second water injection well choke that the other end of second peripheral runner and sprue links to each other to can select one of them first water injection well choke and a second water injection well choke and external cooling liquid tube coupling as required in a flexible way, in order to satisfy different application scenarios.

Drawings

Fig. 1 is a schematic structural diagram of a liquid cooling box provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a main box in a liquid cooling box provided in an embodiment of the present invention;

fig. 3 is a schematic view of a connection structure between a liquid cooling box and an external cooling liquid pipeline provided in an embodiment of the present invention;

fig. 4 is a schematic view of another connection structure between a liquid cooling tank and an external cooling liquid pipeline according to an embodiment of the present invention;

fig. 5 is a schematic view of another connection structure between a liquid cooling box and an external cooling liquid pipeline provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-2, the liquid cooling box according to the embodiment of the present invention is a schematic structural diagram, and the liquid cooling box can be used for power electronic devices (e.g., high voltage dc power supply, motor controller, etc.), and provides protection for electronic components in the power electronic devices, and realizes heat dissipation of electronic components, such as semiconductor switch devices. The liquid cooling box of this embodiment includes upper cover, main tank 1 and lower cover 2, and is formed with the main cavity that is used for installing electronic component (including semiconductor switch) between main tank 1 and the upper cover, can have structures such as radiator in this main cavity, is convenient for the heat exchange between main tank 1 and the electronic component. Be formed with the coolant liquid chamber between main tank 1 and the lower cover 2, this coolant liquid chamber joinable outside coolant liquid pipeline to for the electronic component heat dissipation in the main cavity chamber through the coolant liquid in coolant liquid chamber of flowing through, pass through the coolant liquid with the heat that the electronic component during operation produced and discharge, avoid the high temperature in the main cavity chamber and influence the stability of electronic component work, and extension electronic component's life. The main box body 1 can be manufactured by die casting.

The cooling liquid cavity comprises a main flow channel 31, a first peripheral flow channel 32 and a second peripheral flow channel 33, a plurality of first spare nozzles 11 are respectively arranged on the main box body 1 and/or the lower cover 2, a plurality of second water nozzles 12 are respectively arranged on the main box body 1 and/or the lower cover 2, the main flow channel 31 is used for realizing heat dissipation of electronic elements in the main cavity, the main flow channel can be designed according to distribution of the electronic elements in the main cavity, and the main flow channel 31 can be similar to the cooling liquid flow channel of the existing box body integrated with a water channel. In the present embodiment, one end of the main flow passage 31 communicates with the first peripheral flow passage 32, and the other end of the main flow passage 31 communicates with the second peripheral flow passage 33. Each first water nozzle 11 is connected with the first peripheral flow passage 32, and each second water nozzle 12 is connected with the second peripheral flow passage 33, that is, each first water nozzle 11 is communicated with one end of the main flow passage 31 through the first peripheral flow passage 32, and each second water nozzle 12 is communicated with the other end of the main flow passage 31 through the second peripheral flow passage 33.

In the embodiment shown in fig. 1 and 2, two first water nozzles 11 and two second water nozzles 12 are respectively included, in practical application, the number of the first water nozzles 11 and the number of the second water nozzles 12 can be arranged according to actual needs, and the number of the first water nozzles 11 and the number of the second water nozzles 12 can be the same or different.

When the liquid cooling box body is connected with an external cooling liquid pipeline, one of the first water nozzle 11 and the second water nozzle 12 can be selected according to specific installation position requirements, the selected internal partition plates of the first water nozzle 11 and the second water nozzle 12 are communicated, and then the first water nozzle 11 and the second water nozzle 12 are respectively connected with the external cooling liquid pipeline, so that a cooling liquid cavity in the main box body 1 and the external cooling liquid pipeline form a loop.

Referring to fig. 3, when the selected first water nozzle 11 and the selected second water nozzle 12 are respectively located on the left side of the main box 1 (i.e. the selected first water nozzle 11 and the selected second water nozzle 12 are respectively adjacent to the water inlet and outlet ends of the main channel 31), and the first water nozzle 11 is connected to the liquid outlet pipe of the external cooling liquid pipeline, and the second water nozzle 12 is connected to the water return pipe of the external cooling liquid pipeline, the cooling liquid flowing in from the external cooling liquid pipeline directly flows into one end of the main channel 31 through the first water nozzle 11 on the left side of the main box 1, and flows out from the other end of the main channel 31 through the second water nozzle 12 on the left side of the main box 1, as shown by the solid arrows in fig..

Referring to fig. 4, when the selected first water nozzle 11 and the selected second water nozzle 12 are respectively located on the right side of the main box 1 (that is, the selected first water nozzle 11 and the selected second water nozzle 12 are both far away from the water inlet and outlet ends of the main channel 31), and the first water nozzle 11 is connected to the liquid outlet pipe of the external cooling liquid pipeline, and the second water nozzle 12 is connected to the water return pipe of the external cooling liquid pipeline, the cooling liquid flowing in from the external cooling liquid pipeline flows into the first peripheral channel 32 from the first water nozzle 11 on the right side of the main box 1, and flows into one end of the main channel 31 through the first peripheral channel 32, and after flowing through the main channel 31, the cooling liquid flows into the second peripheral channel 33 from the other end of the main channel 31, and flows out through the second water nozzle 12 on the right side of the main box 1, as shown by.

Of course, in practical applications, the first water nozzle 11 on the left side of the main box 1 and the second water nozzle 12 on the right side of the main box 1 may be selected to be connected to the external cooling liquid pipeline (i.e. the first water nozzle 11 is selected to be adjacent to the water inlet and outlet end of the main channel 31, and the second water nozzle 12 is selected to be away from the water inlet and outlet end of the main channel 31), and when the first water nozzle 11 is connected to the liquid outlet pipe of the external cooling liquid pipeline and the second water nozzle 12 is connected to the water return pipe of the external cooling liquid pipeline, as shown in fig. 5, the cooling liquid flowing in from the external cooling liquid pipeline directly flows into one end of the main channel 31 through the first water nozzle 11 on the left side of the main box 1, flows into the second peripheral channel 33 from the other end of the main channel 31, and flows out from the second water nozzle 12 on the right side.

That is, the cooling box body of the embodiment can flexibly select one of the first water nozzles 11 and one of the second water nozzles 12 to be connected with an external cooling liquid pipeline according to actual needs, thereby meeting different application occasions.

In an embodiment of the present invention, the first peripheral flow channel 32 and the second peripheral flow channel 33 are arranged around the main flow channel 31 in a plane parallel to the lower cover 2, i.e. the main flow channel 31 is located in the area enclosed by the first peripheral flow channel 32 and the second peripheral flow channel 33. The structure is convenient for arranging the first water nozzle 11 and the second water nozzle 12 on the main box body 1 because the first water nozzle 11 and the second water nozzle 12 need to be arranged on the edge of the main box body 1.

The above-described cooling liquid chamber may be located at the bottom of the main casing 1, and accordingly, the first and second peripheral flow passages 32 and 33 are respectively disposed adjacent to at least one side wall of the main casing 1. The structure not only can be used for radiating more electronic elements in the main cavity of the liquid cooling box body, but also is convenient for arranging the first water nozzle 11 and the second water nozzle 12. The first water nozzle 11 is arranged on the side wall and/or the lower cover of the main box body 1 adjacent to the first peripheral flow passage 32, and the second water nozzle 12 is arranged on the side wall and/or the lower cover of the main box body 1 adjacent to the second peripheral flow passage 33.

The first peripheral flow passage 32 and the second peripheral flow passage 33 may be respectively formed by a groove on a lower surface of the bottom plate of the main casing 1, and the first peripheral flow passage 32, the second peripheral flow passage 33, and the main flow passage 31 may be formed by one-time die casting with the main casing 1. Of course, in practical applications, the first peripheral flow passage 32 and the second peripheral flow passage 33 may be reworked after the main housing 1 is die-cast, but the amount of work is certainly increased.

In particular, the main box 1 may have a rectangular parallelepiped shape, that is, the main box 1 includes a first side wall, a second side wall, a third side wall and a fourth side wall, which are perpendicular to the lower cover 2 and are sequentially connected end to end. The first peripheral flow channel 32 is adjacent to the first side wall, the second side wall and the third side wall respectively, at least two of the first side wall, the second side wall, the third side wall and the lower cover are provided with first water nozzles 11, and the liquid cooling box body can be provided with the first water nozzles 11 on at most four surfaces, so that the external cooling liquid pipeline connection is more flexible.

Similarly, the second peripheral flow passage 33 may be adjacent to the first, third, and fourth side walls, respectively, and at least two of the first, third, fourth, and lower covers have the second water nozzle 12 thereon, and the liquid cooling tank may have the second water nozzle 12 on at most four surfaces, so that the external cooling liquid pipe connection is more flexible.

In a specific implementation, the main flow channel 31, the first peripheral flow channel 32 and the second peripheral flow channel 33 may be separated by a rib 13 protruding from a lower surface of a bottom plate of the main box 1, a side wall of the main box 1 protrudes from the lower surface of the bottom plate, a portion of the side wall of the main box 1 protruding from the lower surface of the bottom plate may have a square step 14, and the lower cover 2 is fixedly mounted on the square step 14. The first peripheral flow channel 32 and the second peripheral flow channel 33 are respectively located between the ribs 13 and the parts of the side walls of the main box body 1 protruding from the lower surface of the bottom plate, so that the first peripheral flow channel 32 and the second peripheral flow channel 33 have larger width (namely the size between the ribs 13 and the parts of the side walls of the main box body 1 protruding from the lower surface of the bottom plate), and the flow requirement of the cooling liquid is ensured. When the width of the local position of the first peripheral flow passage 32 or the second peripheral flow passage 33 is not enough to satisfy the flow rate requirement of the cooling liquid, the depth (i.e., the dimension perpendicular to the direction of the lower cover 2) of the corresponding position of the first peripheral flow passage 32 or the second peripheral flow passage 33 can be increased.

Furthermore, in order to avoid the separation effect between the main flow channel 31, the first peripheral flow channel 32 and the second peripheral flow channel 33, a first sealing rubber strip may be provided between the top surface of the rib 13 and the lower cover 2. Similarly, in order to avoid the leakage of the cooling liquid, a second sealing rubber strip can be arranged between the step surface of the square-shaped step 14 (the step surface is a plane parallel to the lower cover 2) and the lower cover 2.

The embodiment of the utility model provides a still provide a power electronic equipment, this power electronic equipment can be high voltage direct current power, machine controller etc. and this power electronic equipment includes like the liquid cooling box shown in fig. 1-2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A liquid cooling box body comprises an upper cover, a main box body and a lower cover, wherein a main cavity for mounting electronic elements is formed between the main box body and the upper cover, and a cooling liquid cavity is formed between the main box body and the lower cover; the cooling system is characterized in that the cooling liquid cavity comprises a main flow channel, a first peripheral flow channel and a second peripheral flow channel, at least two first water nozzles are arranged on the main box body and/or the lower cover, and at least two second water nozzles are also arranged on the main box body and/or the lower cover; each first water nozzle is communicated with one end of the main flow channel through the first peripheral flow channel, and each second water nozzle is communicated with the other end of the main flow channel through the second peripheral flow channel.

2. The liquid cooling tank of claim 1, wherein the first peripheral flow passage and the second peripheral flow passage are disposed around the main flow passage in a plane parallel to the lower cover.

3. The liquid-cooled tank of claim 2, wherein the cooling liquid chamber is located at a bottom of the main tank, and the first peripheral flow passage and the second peripheral flow passage are respectively disposed adjacent to at least one side wall of the main tank; the first water nozzle is positioned on the side wall and/or the lower cover of the main box body adjacent to the first peripheral flow channel, and the second water nozzle is positioned on the side wall and/or the lower cover of the main box body adjacent to the second peripheral flow channel.

4. The liquid cooling tank of claim 3, wherein the first peripheral flow passage and the second peripheral flow passage are respectively formed by a groove on a lower surface of a bottom plate of the main tank, and the main flow passage, the first peripheral flow passage and the second peripheral flow passage are formed by one-time die casting with the main tank.

5. The liquid-cooled tank of claim 3, wherein the main tank includes a first side wall, a second side wall, a third side wall, and a fourth side wall, each of which is perpendicular to the lower cover and is connected end to end in sequence; the first peripheral flow channel is respectively adjacent to the first side wall, the second side wall and the third side wall, and at least two of the first side wall, the second side wall, the third side wall and the lower cover are provided with the first water nozzle.

6. The liquid cooling tank of claim 5, wherein the second peripheral flow passage is adjacent to the first, third, and fourth sidewalls, respectively, and at least two of the first, third, fourth, and lower covers have the second nozzle thereon.

7. The liquid cooling tank of claim 4, wherein the main channel, the first peripheral channel and the second peripheral channel are separated by ribs protruding from the lower surface of the bottom plate of the main tank, the side wall of the main tank protrudes from the lower surface of the bottom plate, the portion of the side wall of the main tank protruding from the lower surface of the bottom plate has a step, and the lower cover is fixedly mounted on the step.

8. The liquid-cooled tank of claim 7, wherein the first and second peripheral channels are respectively located between the ribs and portions of the side walls of the main tank protruding from the bottom plate.

9. The liquid cooling tank of claim 7, wherein a first sealant strip is disposed between the top surface of the rib and the lower cover, and a second sealant strip is disposed between the step surface of the square step and the lower cover.

10. A power electronic device comprising a liquid-cooled tank as claimed in any one of claims 1 to 9.

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