IGCT power module unit heat dissipation device

Abstract

The utility model provides an IGCT power module unit heat dissipation device, belonging to the semiconductor device technology field, the device comprises a GCT device heat dissipation mechanism, a control module and a liquid cooling machine, the GCT device heat dissipation mechanism is provided with an installation position used for placing a GCT device, the installation position is provided with a temperature sensing element, and the temperature sensing element is provided with a temperature sensor. The temperature sensing element is used for detecting the real-time temperature of the heat dissipation mechanism of the GCT device, and the control module is used for controlling the liquid cooling machine to dissipate heat of the heat dissipation mechanism of the GCT device when the real-time temperature exceeds a preset threshold value; by arranging the liquid cooling machine and the cooling water channel, heat of the heat conduction piece and the GCT device is absorbed and taken away through cooling liquid, and it is ensured that the GCT device stably operates within a reasonable temperature range; the temperature sensing element monitors the temperature change of the GCT device in real time, converts a temperature signal into an electric signal and transmits the electric signal to the control module, and the control module dynamically adjusts the operation parameters of the liquid cooling machine according to a preset control strategy, so that the temperature control of the I GCT power module unit is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a semiconductor device technical field especially, it relates to a kind of IGCT power module unit heat sink. BACKGROUND

[0002] GCT (Gate Commutated Turn-off Thyristor) is a kind of semiconductor device suitable for power electronic converter, it generates a lot of heat when working;IGCT (Integrated Gate-Commutated Thyristor) is integrated gate-commutated thyristor, usually by printed circuit board GCT chip and its gate drive circuit are connected;IGCT power module unit is a kind of modular equipment integrated IGCT device, commonly used in electric power, metallurgy, railway and other fields.

[0003] In the single module application of prior art, GCT cooling mode is mainly natural cooling or natural air cooling, which is suitable for devices or components with low temperature control requirements and low device heating power, but the above cooling mode has limited cooling capacity and limited cooling effect in high-power application scenarios, which can easily lead to overheating and damage of GCT devices during operation, thereby affecting the service life and reliability of the equipment. UTILITY MODEL CONTENT

[0004] To overcome the problems in the related art, the purpose of the utility model is to provide an IGCT power module unit cooling device, which can quickly remove the heat of GCT devices through a cooling liquid, has stronger cooling capacity than traditional cooling methods, avoids damage to GCT devices due to overheating, monitors the temperature of GCT devices in real time through a temperature sensing element, and transmits data to a control module, which adjusts the equipment parameters of the liquid cooling machine to dynamically adjust the real-time temperature of the GCT device cooling mechanism, thereby improving the service life and reliability of the IGCT power module unit.

[0005] An IGCT power module unit cooling device includes a GCT device cooling mechanism, a control module and a liquid cooling machine, the GCT device cooling mechanism is provided with a mounting position for placing GCT devices, and a temperature sensing element is arranged on the mounting position, the temperature sensing element is used to detect the real-time temperature of the GCT device cooling mechanism.

[0006] The GCT device cooling mechanism includes a cooling element, the cooling element is provided with a liquid cooling cavity, the liquid cooling cavity is connected with the liquid cooling machine, and the liquid cooling machine adjusts the flow and speed of the cooling liquid delivered to the liquid cooling cavity in real time.

[0007] The liquid cooling machine and the temperature sensing element are electrically connected with the control module, and the control module is used for controlling the liquid cooling machine to dissipate heat for the GCT device heat dissipation mechanism when the real-time temperature exceeds a preset threshold.

[0008] Since the natural heat dissipation and natural air cooling mode commonly used in the prior art cannot meet the heat dissipation requirement of a high-power application scenario, the utility model discloses a liquid cooling machine, a temperature sensing element and a control module are combined to achieve efficient heat dissipation effect; the liquid cooling machine quickly removes the heat of the GCT device through the cooling liquid, has stronger heat dissipation capacity than the traditional heat dissipation mode, and avoids damage of the GCT device due to overheating; the temperature sensing element monitors the real-time temperature of the GCT device in real time, and transmits data to the control module; the control module adjusts the equipment parameters of the liquid cooling machine to realize dynamic adjustment of the temperature of the GCT device heat dissipation mechanism, ensures that the GCT device always works within a safe temperature range, and improves the service life and reliability of the IGCT power module unit.

[0009] In the preferred technical scheme of the utility model, the cooling member is connected with the GCT device, and the contact surfaces of the cooling member and the GCT device are matched with each other.

[0010] The cooling member can quickly remove the heat of the GCT device, and the matched contact surfaces ensure that the heat is evenly transferred from the GCT device to the cooling member, so that space is not wasted and local overheating is avoided, and the heat dissipation performance is improved.

[0011] In the preferred technical scheme of the utility model, the cooling member comprises an upper cover plate and a lower cover plate which are connected with each other, the upper cover plate is arranged at the top of the GCT device, and the lower cover plate is arranged at the bottom of the GCT device.

[0012] By arranging the upper cover plate and the lower cover plate at the top and the bottom of the GCT device respectively, the heat dissipation area is significantly increased, and the upper cover plate and the lower cover plate can provide stable mechanical support for the GCT device.

[0013] In the preferred technical scheme of the utility model, a heat conduction member is further arranged between the cooling member and the GCT device, and the side wall of the heat conduction member is in contact with the GCT device.

[0014] The heat conduction member is in contact with the GCT device, so that the heat in the GCT device can be evenly and rapidly transferred to the cooling member through the heat conduction member, and local overheating of the GCT device is avoided.

[0015] In the preferred technical scheme of the utility model, the heat conduction member is provided as two, one is arranged between the upper cover plate and the GCT device, and the other is arranged between the lower cover plate and the GCT device.

[0016] The design of the two heat conductors can more effectively manage the heat generated by the GCT device during operation, ensure that the GCT device operates in a suitable temperature range, and the heat conductors can also serve as additional support structures of the cooling member.

[0017] In the preferred technical scheme of the utility model, the liquid cooling cavity comprises a cooling water channel, the cooling water channel is arranged in an S shape in the upper cover plate and the lower cover plate, and the upper surface of the upper cover plate and the lower surface of the lower cover plate are both provided with a water channel cover plate matched with the cooling water channel.

[0018] The arrangement of the cooling water channel enables the cooling liquid to flow through the cooling member and take away the heat in the heat conductors closely arranged on the cooling member, thereby avoiding the accumulation of heat of the GCT device, and the S-shaped design of the cooling water channel in the upper cover plate and the lower cover plate helps to achieve more efficient heat exchange and more uniform heat distribution; the water channel cover plate facilitates the subsequent quick maintenance and repair of the cooling water channel, while strictly controlling the air tightness between the cooling water channel and the water channel cover plate to prevent the leakage of the cooling liquid.

[0019] In the preferred technical scheme of the utility model, the cooling water channel of the upper cover plate and the cooling water channel of the lower cover plate are connected through a connecting pipe; the cooling water channel is connected with the liquid cooling machine through a conveying pipe, and the conveying pipe is provided with a control valve.

[0020] The upper cover plate and the lower cover plate are connected through the connecting pipe, and the cooling water channel is connected with the liquid cooling machine through the conveying pipe, so that the flow path of the cooling liquid is from the liquid cooling machine to the cooling member and then back to the liquid cooling machine, while the flow direction of the cooling liquid between the upper cover plate and the lower cover plate is not limited, and the flow direction is adjusted only according to the actual temperature of the upper surface and the lower surface of the GCT device.

[0021] In the preferred technical scheme of the utility model, the upper cover plate and the lower cover plate are connected through a spring bolt, the spring bolt comprises a bolt, the bolt penetrates through the upper cover plate and is threadedly connected with the lower cover plate, a spring is sleeved on the bolt, and opposite ends of the spring are respectively abutted against the upper cover plate and the lower cover plate.

[0022] The upper cover plate and the lower cover plate are connected through the spring bolt, so that the cooling member, the heat conductor and the GCT device are tightly fastened; the use of the spring bolt connection enables the overall structure to remain stable and reduce structural deformation when facing external impact or vibration.

[0023] In the preferred technical scheme of the utility model, the temperature sensing element penetrates through the cooling member and is installed on the GCT device.

[0024] The temperature sensing element directly contacts the GCT device and can accurately sense the temperature change of the GCT device in real time.

[0025] The utility model has the advantages that:

[0026] The utility model provides a kind of IGCT power module unit heat sink device, the interconnection of GCT device heat dissipation mechanism, temperature sensing element, control module and liquid cooling machine is realized high-efficient heat dissipation effect by being set;By setting heat transfer element, the heat of GCT device is transferred and evenly dispersed, effectively avoid the risk of GCT device local overheating damage;Liquid cooling machine and cooling water channel utilize coolant absorption and take away the heat of heat transfer element and GCT device, ensure that GCT device is stably operated in reasonable temperature range;Cooling water channel is S-shaped design and flexible flow direction adjustment, ensure the uniformity of heat distribution and the efficiency of heat exchange;Temperature sensing element real-time monitoring temperature variation of GCT device, and temperature signal is converted into electric signal transmission to control module, and control module is dynamically adjusted according to the operation parameter of liquid cooling machine according to preset control strategy, to realize the temperature control of GCT device heat dissipation mechanism, ensure that IGCT device is always in optimum working state in the application scene of high voltage and high power, to improve equipment life and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is an explosion map of a typical embodiment of the utility model's a kind of IGCT power module unit heat sink device;

[0028] Figure 2 It is the structure schematic view of a typical embodiment of the utility model's a kind of IGCT power module unit heat sink device;

[0029] Figure 3 It is the structure relationship diagram of the utility model's a kind of IGCT power module unit heat sink device;

[0030] Figure 4 It is the explosion map of another typical embodiment of the utility model's a kind of IGCT power module unit heat sink device;

[0031] Figure 5 It is the front view of the utility model's a kind of IGCT power module unit heat sink device;

[0032] Figure 6 It is the plan view of the utility model's a kind of IGCT power module unit heat sink device;

[0033] Figure 7 It is the bottom view of the utility model's a kind of IGCT power module unit heat sink device;

[0034] Figure 8 It is the left view of the utility model's a kind of IGCT power module unit heat sink device;

[0035] Figure 9 It is the right view of the utility model's a kind of IGCT power module unit heat sink device.

[0036] Figure 10 is an A-A sectional view of the IGCT power module unit heat dissipation device.

[0037] Reference signs:

[0038] 1, temperature sensing element; 2, GCT device; 3, heat plate; 4, upper cover plate; 5, lower cover plate; 6, cooling water channel; 7, connecting pipe; 8, conveying pipe; 9, spring bolt; 10, water channel cover plate. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present application is more thorough and complete, and the scope of the present application can be fully conveyed to those skilled in the art.

[0040] GCT (Gate Commutated Turn-off Thyristor) is a semiconductor device suitable for power electronic converters, which generates a large amount of heat when working; IGCT (Integrated Gate-Commutated Thyristor) is an integrated gate-commutated thyristor, which is usually connected to the gate drive circuit of the GCT chip through a printed circuit board; the IGCT power module unit is a modular device integrating IGCT devices, which is commonly used in the fields of power, metallurgy, and railway.

[0041] In the single module application of the prior art, the GCT heat dissipation method is mainly natural heat dissipation or natural air cooling, which is suitable for devices or components with low temperature control requirements and low device heating power. However, the above heat dissipation methods have limited heat dissipation capacity and effect in high-power application scenarios, which can easily lead to overheating and damage of the GCT device during operation, thereby affecting the service life and reliability of the device.

[0042] Based on this, the present application provides an IGCT power module unit heat dissipation device.

[0043] Embodiment 1

[0044] Reference Figures 1-3The embodiment provides a heat dissipation device for an IGCT power module unit, which comprises a GCT device 2 heat dissipation mechanism, a control module and a liquid cooling machine, the GCT device 2 heat dissipation mechanism is provided with a mounting position for placing a GCT device 2, the GCT device 2 is a core component of the IGCT power module unit, the mounting position is provided with a temperature sensing element 1, and the temperature sensing element 1 is used for detecting the real-time temperature of the GCT device 2 heat dissipation mechanism.

[0045] The GCT device 2 heat dissipation mechanism comprises a cooling piece, the cooling piece is provided with a liquid cooling cavity, the liquid cooling cavity is circumscribed by the liquid cooling machine, and the liquid cooling machine adjusts the flow and speed of the cooling liquid delivered to the liquid cooling cavity in real time.

[0046] The liquid cooling machine and the temperature sensing element 1 are electrically connected with the control module, the control module is used for controlling the liquid cooling machine to dissipate heat for the GCT device 2 heat dissipation mechanism when the real-time temperature exceeds a preset threshold value, and the control module adjusts the flow and liquid cooling temperature of the liquid cooling machine according to a preset temperature interval and the real-time temperature when the real-time temperature exceeds the preset threshold value.

[0047] The cooling piece is connected with the liquid cooling machine, and heat is taken away by the cooling liquid, the cooling piece is connected with the GCT device 2, the contact surfaces of the cooling piece and the GCT device 2 are matched with each other, the cooling piece comprises an upper cover plate 4 and a lower cover plate 5 which are connected with each other, the upper cover plate 4 is arranged at the top of the GCT device 2, the lower cover plate 5 is arranged at the bottom of the GCT device 2, and the upper cover plate 4 and the lower cover plate 5 provide stable mechanical support structures for the GCT device 2 heat dissipation mechanism.

[0048] The liquid cooling cavity comprises a cooling water channel 6, the cooling water channel 6 is used for the flow of the cooling liquid to take away heat, the cooling water channel 6 is S-shaped and arranged in the upper cover plate 4 and the lower cover plate 5, the S-shaped design helps to realize more efficient heat exchange and more uniform heat distribution, the upper surface of the upper cover plate 4 and the lower surface of the lower cover plate 5 are provided with a water channel cover plate 10 matched with the cooling water channel 6, the water channel cover plate 10 covers the surface of the cooling water channel 6, facilitates subsequent rapid maintenance and repair of the cooling water channel 6, and strictly controls the air tightness between the cooling water channel 6 and the water channel cover plate 10 to prevent the leakage of the cooling liquid.

[0049] Specifically, the upper cover plate 4 and the lower cover plate 5 are both formed with two notches by the cooling water channel 6; the notches of the cooling water channel 6 of the upper cover plate 4 and the lower cover plate 5 are communicated through the connecting pipe 7, the notches of the upper cover plate 4 and the lower cover plate 5 communicated through the connecting pipe 7 are located on the same side, and the two notches of the upper cover plate 4 and the lower cover plate 5 located on the other side are respectively connected with the liquid cooling machine through the conveying pipe 8, and this connection mode ensures that the flow path of the cooling liquid is from the liquid cooling machine to the cooling member and then back to the liquid cooling machine, and meanwhile does not limit the flow direction of the cooling liquid between the upper cover plate 4 and the lower cover plate 5, but adjusts the flow direction according to the actual temperature of the upper surface and the lower surface of the GCT device 2.

[0050] More specifically, the upper cover plate 4 and the lower cover plate 5 are connected through the spring bolt 9, so that the upper cover plate 4, the lower cover plate 5 and the GCT device 2 are fastened, the spring bolt 9 includes a bolt, the bolt penetrates through the upper cover plate 4 and is threadedly connected with the lower cover plate 5, a spring is sleeved on the bolt, and opposite ends of the spring are respectively abutted against the upper cover plate 4 and the lower cover plate 5; the connection through the spring bolt 9 can keep the overall structure stable and reduce structural deformation when facing external impact or vibration; meanwhile, the structure between the cooling member and the GCT device 2 is compact, which is more conducive to the layer-by-layer transfer of heat from inside to outside and improves the heat dissipation efficiency; the elasticity of the spring improves the planar adaptability of the cooling member and the GCT device 2 to adjacent components, so that the device can be applied in more different specifications of structures.

[0051] In actual application, the temperature sensing element 1 is a temperature sensor, the temperature sensor is connected with the control module and monitors the temperature of the GCT device 2 in real time, the temperature sensing element 1 penetrates through the cooling member and is installed on the GCT device 2 to detect the upper surface temperature and the lower surface temperature of the GCT device 2 respectively, and the temperature sensing element 1 can be installed through threads, and a small-size temperature sensing element 1 can be directly installed by using a fixed glue.

[0052] The working process of the embodiment is as follows:

[0053] The liquid cooling machine delivers the cooling liquid into the upper cover plate 4 and the lower cover plate 5, the heat generated by the GCT device 2 in the running process is conducted into the cooling water channel 6 of the upper cover plate 4 and the lower cover plate 5 and is absorbed by the cooling liquid in the cooling water channel 6, under the driving of the liquid cooling machine, the cooling liquid absorbing heat flows back to the liquid cooling machine through the connecting pipe 7 and the conveying pipe 8 to be cooled, forming a circulating heat dissipation path; meanwhile, the temperature sensing element 1 monitors the temperature change of the GCT device 2 in real time and transmits the temperature data to the control module, and the control module adjusts the operating parameters of the liquid cooling machine in real time according to the preset data.

[0054] The utility model discloses a liquid cooling machine and cooling water channel 6 utilize cooling liquid absorption and take away the heat of GCT device 2, ensure that GCT device 2 is in the stable operation of reasonable temperature range, the S shape design and flexible flow direction adjustment of cooling water channel 6, ensure the high efficiency of heat exchange and the homogeneity of heat distribution, temperature sensing element 1 real -time monitoring GCT device 2 heat dissipation mechanism's real -time temperature change, and temperature signal is converted into electric signal transmission to control module, and control module according to the preset control strategy carries out dynamic adjustment to the operating parameter of liquid cooling machine, to realize the temperature control of GCT device 2, ensure that IGCT power module unit is always in the best working condition, thereby improve the equipment life and reliability.

[0055] Embodiment 2

[0056] Referring to Figures 2-4 The utility model provides a kind of IGCT power module unit heat abstractor provided in the embodiment, including GCT device 2 heat dissipation mechanism, control module and liquid cooling machine, the installation site for placing GCT 2 is provided in the GCT device 2 heat dissipation mechanism, the GCT device 2 is IGCT power module unit core component, temperature sensing element 1 is provided on the installation site, and the temperature sensing element 1 is used to detect the real-time temperature of the GCT device 2 heat dissipation mechanism;

[0057] The GCT device 2 heat dissipation mechanism includes cooling piece, liquid cooling cavity is provided in the cooling piece, the liquid cooling cavity is connected with the liquid cooling machine, and the liquid cooling machine adjusts the flow and speed of cooling liquid transported to the liquid cooling cavity in real time;

[0058] The liquid cooling machine and the temperature sensing element 1 are electrically connected with the control module, and the control module is used to control the liquid cooling machine to dissipate heat to the GCT device 2 heat dissipation mechanism when the real-time temperature exceeds preset threshold value;When the real-time temperature exceeds preset threshold value, the control module adjusts the flow and liquid cooling temperature of the liquid cooling machine according to preset temperature interval and the real-time temperature.

[0059] The cooling piece is connected with the liquid cooling machine, and the cooling piece is connected with the GCT 2, the cooling piece and the contact surface of the GCT device 2 are matched with each other, the cooling piece includes upper cover plate 4 and lower cover plate 5 connected with each other, the upper cover plate 4 is arranged at the top of the GCT device 2, the lower cover plate 5 is arranged at the bottom of the GCT device 2, and the upper cover plate 4 and the lower cover plate 5 provide stable mechanical support structure for the GCT device 2 heat dissipation mechanism.

[0060] The liquid cooling cavity comprises a cooling water channel 6 for cooling liquid flow to take away heat, which is S-shaped in the upper cover plate 4 and the lower cover plate 5, and the S-shaped design helps to achieve more efficient heat exchange and more uniform heat distribution. The upper surface of the upper cover plate 4 and the lower surface of the lower cover plate 5 are provided with water channel cover plates 10 matched with the cooling water channel 6. The water channel cover plate 10 covers the surface of the cooling water channel 6, which is convenient for subsequent quick maintenance and repair of the cooling water channel 6, and at the same time strictly controls the air tightness between the cooling water channel 6 and the water channel cover plate 10 to prevent cooling liquid leakage.

[0061] Specifically, the upper cover plate 4 and the lower cover plate 5 are formed with two notches by the cooling water channel 6; the notches of the cooling water channel 6 of the upper cover plate 4 and the lower cover plate 5 are communicated by a connecting pipe 7, and the notches of the upper cover plate 4 and the lower cover plate 5 communicated by the connecting pipe 7 are located on the same side, and the two notches of the upper cover plate 4 and the lower cover plate 5 located on the other side are respectively connected with the liquid cooling machine through a conveying pipe 8. This connection mode ensures that the flow path of the cooling liquid is from the liquid cooling machine to the cooling member and then back to the liquid cooling machine, and at the same time does not limit the flow direction of the cooling liquid between the upper cover plate 4 and the lower cover plate 5, but adjusts the flow direction according to the actual temperature of the upper surface and the lower surface of the GCT device 2.

[0062] In this embodiment, a heat conduction member is further arranged between the cooling member and the GCT device 2, the side wall of the heat conduction member is in contact with the GCT device 2, and the heat conduction member can be a vapor chamber 3 which can quickly transfer the heat of the GCT device 2 to the cooling member through itself; the vapor chamber 3 is preferably provided with two, one is arranged between the upper cover plate 4 and the GCT device 2, and the other is arranged between the lower cover plate 5 and the GCT device 2. The design of the two vapor chambers 3 can more effectively manage the heat generated by the GCT device 2 during operation, and can also serve as an additional support structure of the cooling member.

[0063] More specifically, the upper cover plate 4 and the lower cover 5 are connected by spring bolts 9 to fasten the cooling member, the vapor chamber 3 and the GCT device 2; the spring bolt 9 comprises a bolt which penetrates the upper cover plate 4 and is threadedly connected with the lower cover plate 5, a spring is sleeved on the bolt, and opposite ends of the spring are respectively in abutment with the upper cover plate 4 and the lower cover plate 5. The connection by the spring bolt 9 makes the overall structure stable and reduces structural deformation when facing external impact or vibration; at the same time, the structure of the cooling member, the vapor chamber 3 and the GCT device 2 is compact, which is more conducive to the layer-by-layer transfer of heat from the inside to the outside, improves the heat dissipation efficiency; the elasticity of the spring improves the planar adaptability of the cooling member, the vapor chamber 3 and the GCT device 2 to adjacent components, so that the device can be applied in more different specifications of structures.

[0064] In actual application, the temperature sensing element 1 is a temperature sensor connected with the control module and monitoring the temperature of the GCT device 2 in real time, the temperature sensing element 1 is installed on the GCT device 2 through the cooling member, and the temperature sensing element 1 can be installed through threads, and small-sized temperature sensing elements 1 can be directly installed by fixing glue.

[0065] The working process of the embodiment is as follows:

[0066] The liquid cooling machine is started to deliver the cooling liquid into the upper cover plate 4 and the lower cover plate 5, the heat generated by the GCT device 2 in the running process is conducted to the heat spreading plate 3, then the heat is conducted to the cooling water channel 6 of the upper cover plate 4 and the lower cover plate 5 by the heat spreading plate 3, is absorbed by the cooling liquid in the cooling water channel 6, under the driving of the liquid cooling machine, the cooling liquid absorbing the heat is returned to the liquid cooling machine through the connecting pipe 7 and the delivery pipe 8 to be cooled, a circulating heat dissipation path is formed, meanwhile, the temperature sensing element 1 monitors the temperature change of the GCT device 2 in real time, and transmits the temperature data to the control module, and the control module adjusts the running parameters of the liquid cooling machine in real time according to the preset data.

[0067] The utility model discloses through the interconnection of GCT device 2 heat dissipation mechanism, temperature sensing element 1, control module and liquid cooling machine, realize efficient heat dissipation effect, through setting up heat spreading plate 3, the heat of GCT device 2 is transferred and evenly dispersed, effectively avoid the risk of GCT device 2 local overheating damage, liquid cooling machine and cooling water channel 6 utilize cooling liquid absorption and take away the heat of heat spreading plate 3 and GCT device 2, ensure that GCT device 2 is in the stable operation in reasonable temperature range, the S shape design and flexible flow direction adjustment of cooling water channel 6, ensure the efficiency of heat exchange and the uniformity of heat distribution, temperature sensing element 1 real -time monitoring GCT device 2 heat dissipation mechanism's real -time temperature change, and temperature signal is converted into electric signal transmission to control module, and the control module adjusts the running parameter of liquid cooling machine according to the preset control strategy, to realize the real -time temperature control of GCT device 2 heat dissipation mechanism, ensure that IGCT power module unit is always in the best working state, thereby improve the equipment life and reliability.

[0068] Embodiment 3

[0069] Referring to Figures 2-10 , the embodiment provides a kind of IGCT power module unit heat dissipation device, including GCT device 2 heat dissipation mechanism, control module and liquid cooling machine, installation position for placing GCT 2 is provided in the GCT device 2 heat dissipation mechanism, the GCT device 2 is IGCT power module unit core component, temperature sensing element 1 is provided on the installation position, and the temperature sensing element 1 is used to detect the real-time temperature of the GCT device 2 heat dissipation mechanism;

[0070] The GCT device 2 heat dissipation mechanism comprises a cooling piece, a liquid cooling cavity is arranged in the cooling piece, and the liquid cooling cavity circumscribes the liquid cooling machine, and the liquid cooling machine adjusts the flow and speed of the cooling liquid transported to the liquid cooling cavity in real time;

[0071] The liquid cooling machine and the temperature sensing element 1 are electrically connected with the control module, and the control module is used for controlling the liquid cooling machine to dissipate heat for the GCT device 2 heat dissipation mechanism when the real-time temperature exceeds a preset threshold value; when the real-time temperature exceeds the preset threshold value, the control module adjusts the flow and liquid cooling temperature of the liquid cooling machine according to the preset temperature interval and the real-time temperature.

[0072] The cooling piece is connected with the liquid cooling machine, and the cooling piece is connected with the GCT device 2, the contact surface of the cooling piece and the GCT device 2 is matched with each other, the cooling piece comprises an upper cover plate 4 and a lower cover plate 5 connected with each other, the upper cover plate 4 is arranged at the top of the GCT device 2, the lower cover plate 5 is arranged at the bottom of the GCT device 2, and the upper cover plate 4 and the lower cover plate 5 provide stable mechanical support structure for the GCT device 2 heat dissipation mechanism.

[0073] The liquid cooling cavity comprises a cooling water channel 6, the cooling water channel 6 is used for the flow of the cooling liquid to carry away heat, the cooling water channel 6 is arranged in the upper cover plate 4 and the lower cover plate 5 in an S shape, and the S-shaped design is helpful to realize more efficient heat exchange and more uniform heat distribution, the upper surface of the upper cover plate 4 and the lower surface of the lower cover plate 5 are provided with a water channel cover plate 10 matched with the cooling water channel 6, and the water channel cover plate 10 covers the surface of the cooling water channel 6.

[0074] Specifically, the upper cover plate 4 and the lower cover plate 5 are communicated through a connecting pipe 7, the cooling water channel 6 is connected with the liquid cooling machine through a conveying pipe 8, and a control valve for controlling the flow of the cooling liquid is arranged on the conveying pipe 8. This connection mode ensures that the flow path of the cooling liquid is from the liquid cooling machine to the cooling piece and then back to the liquid cooling machine, and at the same time does not limit the flow direction of the cooling liquid between the upper cover plate 4 and the lower cover plate 5, but adjusts the flow direction according to the actual temperature of the upper surface and the lower surface of the GCT device 2.

[0075] The cooling piece and the GCT device 2 are further provided with a heat conduction piece, the side wall of the heat conduction piece is connected with the GCT device 2, the heat conduction piece is a vapor chamber 3, the vapor chamber 3 as a heat conduction element can quickly transfer the heat of the GCT device 2 to the cooling piece through itself; the vapor chamber 3 is provided with two, one is arranged between the upper cover plate 4 and the GCT device 2, and the other is arranged between the lower cover plate 5 and the GCT device 2, and the two vapor chambers 3 have different shapes to adapt to GCT devices 2 with different specific structures.

[0076] More specifically, the upper cover plate 4 and the lower cover plate 5 are connected by a spring bolt 9, so that the cooling member, the heat sink plate 3 and the GCT device 2 are fastened; the spring bolt 9 includes a bolt which penetrates the upper cover plate 4 and is screwed with the lower cover plate 5, and a spring is sleeved on the bolt, and opposite ends of the spring are respectively abutted with the upper cover plate 4 and the lower cover plate 5; the connection by the spring bolt 9 can keep the overall structure stable and reduce structural deformation when facing external impact or vibration.

[0077] In actual application, the temperature sensing element 1 is connected with the control module and monitors the temperature of the GCT device 2 in real time, the temperature sensing element 1 penetrates the cooling member and is installed on the GCT device 2, and the temperature sensing element 1 can be installed by screwing, and a small-sized temperature sensing element 1 can be directly installed by fixing glue.

[0078] In this embodiment, the temperature sensing element 1 is provided in multiple groups and is respectively fixed on the top and bottom of the GCT device 2, and the temperature of the upper surface and the lower surface of the GCT device 2 is monitored and fed back in real time, so as to adjust the flow direction of the cooling liquid; when the temperature of the upper surface of the GCT device 2 is higher than that of the lower surface, the flow direction of the cooling liquid is adjusted as follows: from the liquid cooling machine to the upper cover plate 4, from the upper cover plate 4 to the lower cover plate 5, and from the lower cover plate 5 to the liquid cooling machine; when the temperature of the lower surface of the GCT device 2 is higher than that of the upper surface, the flow direction of the cooling liquid is adjusted as follows: from the liquid cooling machine to the lower cover plate 5, from the lower cover plate 5 to the upper cover plate 4, and from the upper cover plate 4 to the liquid cooling machine.

[0079] The liquid cooling machine is provided with a temperature sensor, a flow sensor, a pressure sensor and a valve, etc., which are respectively used for monitoring and adjusting the flow, pressure and temperature of the cooling liquid, so that the overall temperature of the IGCT power module can be more optimally adjusted.

[0080] The liquid cooling machine and the control module are in bidirectional communication, the control module sends control signals of flow, pressure and temperature to the liquid cooling machine, and the liquid cooling machine feeds back the temperature to the control module in real time.

[0081] The working process of this embodiment is as follows:

[0082] The liquid cooling machine is started to deliver the cooling liquid to the upper cover plate 4 and the lower cover plate 5, the heat generated by the GCT device 2 in the running process is conducted to the heat sink plate 3, and then the heat sink plate 3 conducts the heat to the cooling water channel 6 of the upper cover plate 4 and the lower cover plate 5, the cooling liquid in the cooling water channel 6 absorbs the heat, and under the driving of the liquid cooling machine, the cooling liquid which absorbs the heat is returned to the liquid cooling machine through the hose and the connecting pipe to be cooled, so that a circulating heat dissipation path is formed; meanwhile, the temperature sensing element 1 monitors the temperature change of the GCT device 2 in real time, and transmits the temperature data to the control module, and the control module adjusts the operating parameters of the liquid cooling machine in real time according to the preset data.

[0083] The utility model discloses through the mutual connection of GCT device 2 heat dissipation mechanism, temperature -sensing element 1, control module and liquid cooling machine, realize efficient heat dissipation effect, through setting the heat plate 3 with the heat of GCT device 2 shift and evenly scattered, effectively avoided the risk of GCT device 2 local overheating damage, liquid cooling machine and cooling water channel 6 utilize the heat of heat plate 3 and GCT device 2 with cooling liquid absorption and take away, ensure that GCT device 2 is in the stable operation in reasonable temperature range, the S shape design of cooling water channel 6 and the flexible flow direction adjustment, ensure the efficiency of heat exchange and the homogeneity of heat distribution, temperature -sensing element 1 real -time monitoring the temperature change of GCT device 2, and temperature signal is converted into electric signal transmission to control module, and control module according to the preset control strategy carries out dynamic adjustment to the operating parameter of liquid cooling machine, to realize the temperature control of GCT device 2, ensure that IGCT power module unit is always in the best working condition, thereby improve the equipment life and reliability.

[0084] For the purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as oriented in the drawings. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application, except where so expressly defined by the specification. All such modifications and variations of the present application that are within the purview of this disclosure are to be considered within the scope of the present application as defined by the appended claims.

[0085] In addition, it needs to be explained that the use of the words "first", "second" and the like of parts, only for the convenience of the corresponding parts are distinguished, such as no other declaration, the above words have no special meaning, therefore can not be understood as the limitation of the protection scope of the present application.

[0086] The above only describes preferred embodiments of the utility model, and does not limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. IGCT power module unit heat dissipation device, characterized in that: including GCT device (2) heat dissipation mechanism, control module and liquid cooling machine, the installation site for placing the GCT device (2) is arranged in the GCT device (2) heat dissipation mechanism, the installation site is provided with temperature sensing element (1), the temperature sensing element (1) is used for detecting the real-time temperature of the GCT device (2) heat dissipation mechanism; The GCT device (2) heat dissipation mechanism includes a cooling element, the cooling element is provided with a liquid cooling cavity, the liquid cooling cavity is circumscribed by the liquid cooling machine, and the liquid cooling machine adjusts the flow and speed of the cooling liquid delivered to the liquid cooling cavity in real time; The liquid cooling machine, the temperature sensing element (1) are electrically connected with the control module, the control module is used for controlling the liquid cooling machine to dissipate heat for the GCT device (2) heat dissipation mechanism when the real-time temperature exceeds the preset threshold.

2. The IGCT power module unit heat dissipation device according to claim 1, characterized in that: The cooling element is connected with the GCT device (2), and the contact surface of the cooling element and the GCT device (2) is matched with each other.

3. The IGCT power module unit heat dissipation device according to claim 1, characterized in that: The cooling element includes an upper cover plate (4) and a lower cover plate (5) connected with each other, the upper cover plate (4) is arranged on the top of the GCT device (2), and the lower cover plate (5) is arranged on the bottom of the GCT device (2).

4. The IGCT power module unit heat dissipation device according to claim 3, characterized in that: A heat conduction element is further arranged between the cooling element and the GCT device (2), and the side wall of the heat conduction element is connected with the GCT device (2).

5. The IGCT power module unit heat dissipation device according to claim 4, characterized in that: The heat conduction element is provided with two, one is arranged between the upper cover plate (4) and the GCT device (2), and the other is arranged between the lower cover plate (5) and the GCT device (2).

6. The IGCT power module unit heat dissipation device according to claim 3, characterized in that: The liquid cooling cavity includes a cooling water channel (6), the cooling water channel (6) is arranged in the upper cover plate (4) and the lower cover plate (5) in an S shape, and the upper surface of the upper cover plate (4) and the lower surface of the lower cover plate (5) are provided with water channel cover plates (10) matched with the cooling water channel (6).

7. The IGCT power module unit heat dissipation device according to claim 6, characterized in that: The cooling water channel (6) of the upper cover plate (4) and the cooling water channel (6) of the lower cover plate (5) are connected through a connecting pipe (7).

8. The IGCT power module unit heat dissipation device according to claim 6, characterized in that: The cooling water channel (6) is connected with the liquid cooling machine through a conveying pipe (8), and the conveying pipe (8) is provided with a control valve.

9. The IGCT power module unit heat dissipation device according to claim 3, characterized in that: The upper cover plate (4) and the lower cover plate (5) are connected by a spring bolt (9), the spring bolt (9) comprises a bolt, the bolt penetrates the upper cover plate (4) and is threadedly connected with the lower cover plate (5), a spring is sleeved on the bolt, and opposite ends of the spring are respectively abutted against the upper cover plate (4) and the lower cover plate (5).

10. The heat sink device for an IGCT power module unit according to claim 1, characterized in that: The temperature sensing element (1) penetrates the cooling member and is installed on the GCT device (2).

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