A heat dissipation structure for an energy dissipation power module

Abstract

The present application relates to the field of energy self-balancing technology, and specifically discloses a heat dissipation structure for an energy dissipation power module, comprising: a special-shaped energy dissipation resistor, a first fin heat sink, a second fin heat sink, a convection heat sink, and a temperature-equalizing heat pipe; the first fin heat sinks are respectively arranged on both sides of the special-shaped energy dissipation resistor along the Z-axis direction; the special-shaped energy dissipation resistor abuts the two first fin heat sinks; the second fin heat sinks are respectively arranged on both sides of the special-shaped energy dissipation resistor along the X-axis direction; the special-shaped energy dissipation resistor is provided with a groove; the temperature-equalizing heat pipe is inserted into the groove, and the temperature-equalizing heat pipe is connected to the second fin heat sinks on both sides of the special-shaped energy dissipation resistor; the convection heat sink is arranged on the side of the special-shaped energy dissipation resistor along the Y-axis direction. The heat dissipation structure provided by this solution can continuously dissipate heat for the special-shaped energy dissipation resistor during the process of starting the energy dissipation of the special-shaped energy dissipation resistor, thereby reducing its heat radiation and heat conduction to surrounding components, and reducing its impact on the operation of the flexible direct current converter valve.

Description

Technical Field

[0001] The present application relates to the technical field of energy self-balancing, and in particular to a heat dissipation structure of an energy dissipation power module. Background Art

[0002] In the field of offshore wind power transmission and large-scale long-distance transmission of new energy onshore, when a fault occurs on the AC side and the converter cannot be locked, a huge power difference will be generated between the transmission end and the receiving end in a short period of time, causing the system DC voltage to rise rapidly. At this time, it is necessary to start the energy self-balancing branch to consume the excess power of the system to suppress the short-term power surplus problem caused by the DC line fault and the AC fault at the receiving end, ensuring that the DC system can continue to operate after the short-term fault and recovery.

[0003] The principle of the energy self-balancing module is to add an energy self-balancing branch to the original flexible DC module. Compared with other energy consumption methods, it does not require an independent control system and eliminates secondary units such as the power module control board and energy supply. It has the advantages of compact structure and certain cost advantages, and brings new solutions for long-distance transmission of large-scale new energy on both land and sea and fault crossing.

[0004] In practical applications, the energy dissipation resistor in the energy self-balancing module will radiate and conduct heat to surrounding components and air when dissipating energy. The heat radiation during heat dissipation will affect the operation of the flexible DC converter valve in the energy self-balancing module. Summary of the Invention

[0005] In view of this, the purpose of the present application is to provide a heat dissipation structure of an energy dissipation power module, which is used to reduce the impact of energy dissipation of an energy dissipation resistor on surrounding components.

[0006] To achieve the above technical objectives, the present application provides a heat dissipation structure for an energy dissipation power module, comprising: a special-shaped energy dissipation resistor, a first fin heat sink, a second fin heat sink, a convection heat sink, and a temperature-averaging heat pipe;

[0007] The first fin heat sink is provided on both sides of the special-shaped energy dissipation resistor along the Z-axis direction, and the special-shaped energy dissipation resistor abuts against the first fin heat sink;

[0008] The second fin heat sink is provided on both sides of the special-shaped energy dissipation resistor along the X-axis direction;

[0009] The special-shaped energy dissipation resistor is provided with a groove;

[0010] The temperature-averaging heat pipe is inserted into the groove, and the temperature-averaging heat pipe is connected to the second fin heat sinks on both sides of the special-shaped energy dissipation resistor;

[0011] The convection heat sink is arranged on the side of the special-shaped energy dissipation resistor along the Y-axis direction.

[0012] Furthermore, the special-shaped energy dissipation resistor is provided with an annular groove;

[0013] The annular groove is in communication with the groove;

[0014] The temperature-averaging heat pipe comprises: a ring pipe section and a straight pipe section;

[0015] The straight pipe section is arranged on the outer periphery of the annular pipe section;

[0016] The straight pipe section and the annular pipe section are connected to each other;

[0017] The annular tube section is inserted into the annular groove;

[0018] The straight pipe section is inserted into the groove.

[0019] Furthermore, the uniform temperature heat pipe comprises a plurality of straight pipe sections;

[0020] A plurality of grooves are provided on the special-shaped energy dissipation resistor;

[0021] The plurality of straight pipe sections are inserted into the plurality of grooves in a one-to-one correspondence.

[0022] Furthermore, the second fin heat sink is a multi-fin stacked heat sink.

[0023] Furthermore, the straight pipe section passes through the second fin heat sink along the X-axis direction.

[0024] Furthermore, the first fin heat sink is a plate-fin heat sink.

[0025] Furthermore, the special-shaped energy dissipation resistor includes a plurality of;

[0026] A plurality of the special-shaped energy dissipation resistors are arranged on the first fin heat sink at intervals along the length direction of the first fin heat sink.

[0027] Furthermore, a temperature collection component is provided between any two adjacent special-shaped energy dissipation resistors.

[0028] Furthermore, the convection heat sink is configured to start synchronously with the special-shaped energy dissipation resistor, and to shut down after the special-shaped energy dissipation resistor is shut down and the startup time of the convection heat sink reaches a first preset time.

[0029] Furthermore, the convection heat sink is also used to shut down when the difference between the real-time temperature of the special-shaped energy-draining resistor and the initial temperature of the special-shaped energy-draining resistor is less than a preset temperature value when the special-shaped energy-draining resistor is started.

[0030] Furthermore, the special-shaped energy dissipation resistor is made of carbon ceramic material.

[0031] It can be seen from the above technical solution that the present application provides a heat dissipation structure of an energy dissipation power module, including: a special-shaped energy dissipation resistor, a first fin heat sink, a second fin heat sink, a convection heat sink and a temperature-averaging heat pipe; the first fin heat sinks are respectively arranged on both sides of the special-shaped energy dissipation resistor along the Z-axis direction; the special-shaped energy dissipation resistor is abutted against the two first fin heat sinks; the second fin heat sinks are respectively arranged on both sides of the special-shaped energy dissipation resistor along the X-axis direction; a groove is provided on the special-shaped energy dissipation resistor; the temperature-averaging heat pipe is inserted into the groove, and the temperature-averaging heat pipe is connected to the second fin heat sinks on both sides of the special-shaped energy dissipation resistor; the convection heat sink is arranged on the side of the special-shaped energy dissipation resistor along the Y-axis direction.

[0032] The heat dissipation structure provided by this solution can continuously dissipate heat for the special-shaped energy-dissipating resistor during its startup and energy-dissipation process, thereby reducing its heat radiation and heat conduction to surrounding components and reducing its impact on the operation of the flexible direct current converter valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic diagram of the overall structure of a heat dissipation structure of an energy dissipation power module provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a special-shaped energy dissipation resistor of an energy dissipation power module heat dissipation structure provided in an embodiment of the present application;

[0036] Figure 3 Schematic diagram of a second fin heat sink and a temperature-averaging heat pipe of an energy dissipation power module heat dissipation structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions of the embodiments of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection requested by this application.

[0038] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0039] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0040] See also Figures 1 to 3 A heat dissipation structure of an energy dissipation power module is provided in an embodiment of the present application. The heat dissipation module can be applied to a UHV flexible DC converter valve to achieve energy self-balancing of the UHV flexible DC converter valve.

[0041] Specifically, the heat dissipation structure of the energy dissipation power module provided in this embodiment includes: a special-shaped energy dissipation resistor 10 , a first fin heat sink 20 , a second fin heat sink 30 , a convection heat sink 40 and a temperature-averaging heat pipe 50 .

[0042] There can be two first fin heat sinks 20, which are respectively arranged on both sides of the special-shaped energy dissipation resistor 10 along the Z axis direction. Figure 1 In this embodiment, the heat dissipation structure is positioned horizontally; the Z-axis direction is the vertical direction. The shaped heat dissipation resistor 10 abuts against two first fin heat sinks 20. Specifically, the top and bottom surfaces of the shaped heat dissipation resistor 10 abut against the two first fin heat sinks 20, respectively. The first fin heat sinks 20 are used to dissipate heat from the shaped heat dissipation resistor 10 in the Z-axis direction. The shaped heat dissipation resistor 10 can abut against the first fin heat sinks 20 directly, or through other heat conducting components or connectors.

[0043] The second fin heat sink 30 is provided on both sides of the special-shaped energy dissipation resistor 10 along the X-axis direction; a groove 11 is provided on the special-shaped energy dissipation resistor 10; the temperature-averaging heat pipe 50 is inserted into the groove 11, and the temperature-averaging heat pipe connects the second fin heat sink 30 on both sides of the special-shaped energy dissipation resistor 10.

[0044] The heat pipe 50 contains a heat transfer medium capable of phase change. When one end of the heat pipe 50 is heated, the medium (typically liquid) absorbs the heat and evaporates into steam. The steam then flows to the other end due to a pressure difference. At the other end, the steam cools, releasing heat and condensing into liquid. The liquid then flows back to the heated end through capillary action or gravity. This cycle repeats, achieving efficient heat transfer.

[0045] Therefore, the second fin heat sink 30 can dissipate heat in the X direction for the special-shaped energy dissipation resistor 10 .

[0046] The convection heat sink 40 is disposed on the side of the special-shaped energy dissipation resistor 10 along the Y-axis direction; the convection heat sink 40 may be an axial flow fan capable of starting forced convection along the Y-axis direction.

[0047] Based on the above, it can be seen that the heat dissipation structure of the energy dissipation power module of this embodiment can dissipate heat in multiple directions of the special-shaped energy dissipation resistor 10, solving the problem of uneven heat dissipation of the existing energy dissipation resistor. At the same time, it can improve the heat dissipation effect so that the energy self-balancing system can adapt to faster and larger energy dissipation scenarios, thereby reducing the impact of the heat radiation of the energy dissipation resistor on surrounding components.

[0048] In one embodiment, a ring groove 12 is provided on the special-shaped energy dissipation resistor 10; the ring groove 12 is connected to the groove 11; the temperature-averaging heat pipe 50 includes: a ring pipe section 52 and a straight pipe section 51; the straight pipe section 51 is provided on the outer periphery of the ring pipe section 52; the straight pipe section 51 and the ring pipe section 52 are connected to each other; the ring pipe section 52 is inserted into the ring groove 12; and the straight pipe section 51 is inserted into the groove 11.

[0049] In practical applications, the special-shaped energy dissipation resistor 10 can be first installed under the temperature-averaging heat pipe 50, and then the first fin heat sink 20 can be clamped on the upper and lower sides of the special-shaped energy dissipation resistor. This can achieve a multi-faceted, multi-contact, and high-efficiency flat-plate resistor press-mounted structure.

[0050] In this solution, the annular groove 12 and the groove 11 can be used to respectively insert the annular pipe section 52 and the straight pipe section 51. On the one hand, the special-shaped energy dissipation resistor 10 is firmly connected to the temperature-averaging heat pipe 50. On the other hand, it can provide a heat transfer effect between the special-shaped energy dissipation resistor 10 and the temperature-averaging heat pipe 50, ensuring effective heat dissipation for the special-shaped energy dissipation resistor 10.

[0051] In this embodiment, the groove 11 is semicircular and its maximum depth is half the diameter of the straight pipe section 51. The maximum depth of the annular groove 12 is also set to half the diameter of the annular pipe section 52, so that the special-shaped energy dissipation resistor 10 can fit closely with the temperature-averaging heat pipe 50, allowing heat to be quickly and effectively transferred to the fins through the temperature-averaging heat pipe 50.

[0052] Optionally, the temperature-averaging heat pipe 50 includes a plurality of straight pipe sections 51 ; a plurality of grooves 11 are provided on the special-shaped energy dissipation resistor 10 ; and the plurality of straight pipe sections 51 are inserted into the plurality of grooves 11 in a one-to-one correspondence.

[0053] In the embodiment provided in the present application, one uniform temperature heat pipe 50 includes four straight pipe sections 51 ; each second finned heat sink 30 is connected to two straight pipe sections 51 .

[0054] Specifically, in this solution, the energy dissipation resistor is a 2-series 2-parallel structure, so the direct contact surface is approximately equal to 8 times the projected area of ​​the resistor. With the help of the temperature-averaging heat pipe 50 and the radiator fins made of aluminum alloy profiles, the equivalent heat dissipation area of ​​the resistor is larger, and the heat dissipation efficiency will exceed the natural heat dissipation of a single resistor. The convection heat sink 40 is then used as an active air-cooling heat dissipation structure to remove the heat from the fin heat sink, which can greatly reduce the heat dissipation time and the number of resistors when multiple intervals are used for resistor applications, and the volume is smaller. Among them, the structure of the convection heat sink 40 can be as follows: Figure 1 As shown, it includes a plurality of fans arranged in sequence, and the convection areas of the plurality of fans cover the sides of each special-shaped energy dissipation resistor 10 , the first fin heat sink 20 , the second fin heat sink 30 , and the temperature-averaging heat pipe 50 .

[0055] It should be noted that in the above-mentioned "2-series 2-parallel structure", "2-series" may refer to a series circuit in which two energy-draining resistors are stacked and pressed together to form a circuit head-to-tail connection; "2-parallel" may refer to a combination of the above-mentioned two series-connected energy-draining resistors, in which the two sets of series-connected energy-draining resistors are connected in parallel through the heat sink 20.

[0056] Optionally, the second finned heat sink 30 is a multi-fin stacked heat sink, which can dissipate heat for different radial areas of the uniform temperature heat pipe 50 in sequence.

[0057] Optionally, the temperature-averaging heat pipe 50 passes through the second finned heat sink 30 along the X-axis direction to ensure the heat conduction effect of the temperature-averaging heat pipe 50 .

[0058] Optionally, the first fin heat sink 20 is a plate-fin heat sink.

[0059] In one embodiment, the special-shaped energy dissipation resistor 10 includes a plurality of special-shaped energy dissipation resistors 10 ; the plurality of special-shaped energy dissipation resistors 10 are arranged on the first fin heat sink 20 at intervals along the length direction of the first fin heat sink 20 .

[0060] Each of the special-shaped energy dissipation resistors 10 is provided with a second fin heat sink 30 on both sides along the X-axis direction; a plurality of special-shaped energy dissipation resistors 10 share the first fin heat sink 20 .

[0061] In a more specific embodiment, a temperature collecting component is provided between any two adjacent special-shaped energy-dissipating resistors 10, for collecting the temperatures of the two special-shaped energy-dissipating resistors 10. Specifically, the special-shaped energy-dissipating resistors 10 may include two.

[0062] In practical applications, the energy dissipation resistor is a key component of the energy self-balancing module of the ultra-high voltage flexible direct current converter valve, and its heat dissipation design is a crucial part of the energy self-balancing module design. A reasonable heat dissipation design can fully remove the heat loss generated by the energy dissipation resistor when the energy self-balancing module is running, and ensure that the energy self-balancing module operates safely and reliably at different ambient temperatures. The heat dissipation structure of the energy dissipation power module provided in the embodiment of the present application can better realize the heat dissipation of the energy dissipation resistor in the energy self-balancing technology, so as to improve the scope of application and performance of the energy self-balancing technology. Among them, the energy dissipation resistor is the core component of the energy self-balancing module that bears energy dissipation. After it reaches the energy dissipation threshold, the energy balance branch of the power module will no longer operate, and the valve control will issue an alarm. It will take a certain interval of time before it can operate again to limit the heat and damage of the energy dissipation resistor. Therefore, improving the heat dissipation capacity of the energy dissipation resistor is the core demand for improving the energy self-balancing technology.

[0063] Because the heat dissipation structure of the energy dissipation resistor will have uneven temperatures inside and outside the energy dissipation resistor during the actual operation of the energy self-balancing module, long-term repeated uneven temperatures will affect the performance of the energy dissipation resistor.

[0064] In one embodiment, the convection heat sink 40 is used to start synchronously with the special-shaped energy dissipation resistor 10, and is used to shut down after the special-shaped energy dissipation resistor 10 is shut down and the startup time of the convection heat sink 40 reaches a first preset time, thereby ensuring the convection heat dissipation effect of the special-shaped energy dissipation resistor 10.

[0065] Among them, the convection radiator 40 can first determine the startup interval time before starting synchronously with the special-shaped energy dissipation resistor 10. Specifically, it determines whether the shutdown time of the convection radiator 40 from the last shutdown exceeds the second preset time. If so, the convection radiator 40 is started synchronously. If not, the convection radiator 40 is kept in the closed state until the shutdown time meets the second preset time. At the same time, the special-shaped energy dissipation resistor 10 is prohibited from starting, which can avoid the life of the convection radiator 40 from being shortened too quickly.

[0066] The first preset time and the second preset time can both be 20 minutes. That is, in this embodiment, after each time the convection radiator 40 is started, it is started for at least 20 minutes, and after each time the convection radiator 40 is shut down, it is shut down for at least 20 minutes. This setting has at least the following advantages:

[0067] 1. The heat dissipation resistor 10 generates a significant amount of heat during operation. Operating the convection heat sink 40 for at least 20 minutes ensures a constant and stable air flow to dissipate the heat. This prevents the temperature of the heat dissipation resistor 10 from rapidly rising to dangerous levels during high-power operation, maintaining it within a safe operating temperature range. For example, in some high-power electrical equipment, heat dissipation resistors can generate extremely high levels of heat in a short period of time. Without sufficient time to dissipate heat, the accumulated heat could damage the resistor itself or even cause equipment failure.

[0068] 2. Keeping the convection heat sink 40 on for at least 20 minutes ensures a smoother cooling process and reduces temperature fluctuations. Frequently turning the convection heat sink 40 on and off can cause the temperature of the heat dissipation resistor 10 to fluctuate, potentially adversely affecting its performance and lifespan. This is especially true when temperature-sensitive electronic components are located near the heat dissipation resistor 10. Frequent temperature fluctuations can alter their parameters, impacting normal operation of the device.

[0069] 3. The convection radiator 40 generates a large current surge at startup. Frequent startup accelerates motor wear and aging, reducing the service life of the convection radiator 40. Setting a minimum restart interval of 20 minutes after shutdown can reduce the number of startups of the convection radiator 40 and reduce startup losses.

[0070] 4. After running for a period of time, the convection radiator 40 will also heat up and needs a certain amount of time to cool down. If there is not enough time interval, the convection radiator 40 may continue to operate at a high temperature, which will not only reduce its heat dissipation efficiency, but may also be damaged by overheating.

[0071] In one embodiment, the convection heat sink 40 is further configured to be closed when the difference between the real-time temperature of the special-shaped energy-dissipating resistor 10 and the initial temperature of the special-shaped energy-dissipating resistor 10 is less than a preset temperature value when the special-shaped energy-dissipating resistor 10 is started.

[0072] The preset temperature value may be 10°C.

[0073] The start or shut down command of the convection heat sink 40 may be transmitted to the convection heat sink 40 via a PMC (Power Module Controller) and an optical fiber.

[0074] If the temperature acquisition component fails, the convection heat sink 40 can be controlled independently of temperature. Specifically, the PMC (Power Module Controller) issues a command to activate forced convection on the convection heat sink 40. If no further de-energization occurs after a first preset time, the forced convection on the convection heat sink 40 can be deactivated. If no de-energization command is issued after a third preset time, and the convection heat sink 40 is still operating, the convection heat sink 40 can be deactivated. The third preset time can be 30 minutes.

[0075] Optionally, the special-shaped energy dissipation resistor 10 is made of carbon ceramic.

[0076] Specifically, the special-shaped energy-dissipating resistor 10 must meet the following requirements: a low resistance value but a high power handling capability, with the ability to withstand short-duration currents in the kA range and withstand high temperatures. Therefore, the resistor is made of carbon ceramic. For example, a single-chip energy-dissipating resistor with a diameter of 151mm can be used. The single-chip resistor can withstand a maximum energy of 111.5kJ and a maximum long-term power of 26W. To meet the required energy dissipation requirements, the energy-dissipating resistor uses four resistors in a press-fit configuration, connected in series and parallel.

[0077] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A heat dissipation structure for a power module, characterized in that: include: A special-shaped energy dissipation resistor (10), a first finned heat sink (20), a second finned heat sink (30), a convection heat sink (40), and a temperature-averaging heat pipe (50); The first fin heat sink (20) is provided on both sides of the special-shaped energy dissipation resistor (10) along the Z-axis direction, and the special-shaped energy dissipation resistor (10) abuts against the first fin heat sink (20); The second fin heat sink (30) is provided on both sides of the special-shaped energy dissipation resistor (10) along the X-axis direction; The special-shaped energy dissipation resistor (10) is provided with a groove (11); The temperature-averaging heat pipe (50) is inserted into the groove (11), and the temperature-averaging heat pipe is connected to the second fin heat sink (30) on both sides of the special-shaped energy dissipation resistor (10); The convection heat sink (40) is arranged on the side of the special-shaped energy dissipation resistor (10) along the Y-axis direction.

2. The heat dissipation structure of the energy dissipation power module according to claim 1, characterized in that: The special-shaped energy dissipation resistor (10) is provided with an annular groove (12); The annular groove (12) is in communication with the groove (11); The temperature-averaging heat pipe (50) comprises: a ring pipe section (52) and a straight pipe section (51); The straight pipe section (51) is arranged on the outer periphery of the annular pipe section (52); The straight pipe section (51) and the annular pipe section (52) are in communication with each other; The annular tube section (52) is inserted into the annular groove (12); The straight pipe section (51) is inserted into the groove (11).

3. The heat dissipation structure of the energy dissipation power module according to claim 2, characterized in that: The temperature-averaging heat pipe (50) comprises a plurality of straight pipe sections (51); A plurality of grooves (11) are provided on the special-shaped energy dissipation resistor (10); The plurality of straight pipe sections (51) are inserted into the plurality of grooves (11) in a one-to-one correspondence.

4. The heat dissipation structure of the energy dissipation power module according to claim 2, characterized in that: The second finned heat sink (30) is a multi-fin stacked heat sink.

5. The heat dissipation structure of the energy dissipation power module according to claim 4, characterized in that: The straight pipe section (51) passes through the second finned heat sink (30) along the X-axis direction.

6. The heat dissipation structure of the energy dissipation power module according to claim 1, characterized in that: The first fin radiator (20) is a plate-fin radiator.

7. The heat dissipation structure of the energy dissipation power module according to claim 1, characterized in that: The special-shaped energy dissipation resistor (10) includes a plurality of; A plurality of the special-shaped energy dissipation resistors (10) are arranged on the first fin heat sink (20) at intervals along the length direction of the first fin heat sink (20).

8. The heat dissipation structure of the energy dissipation power module according to claim 7, characterized in that: A temperature collecting component is provided between any two adjacent special-shaped energy dissipation resistors (10).

9. The heat dissipation structure of the energy dissipation power module according to any one of claims 1 to 8, characterized in that: The convection radiator (40) is used to start synchronously with the special-shaped energy dissipation resistor (10), and is used to shut down after the special-shaped energy dissipation resistor (10) is shut down and the startup time of the convection radiator (40) reaches a first preset time.

10. The heat dissipation structure of the energy dissipation power module according to claim 9, characterized in that: The convection heat sink (40) is also used to shut down when the difference between the real-time temperature of the special-shaped energy dissipation resistor (10) and the initial temperature of the special-shaped energy dissipation resistor (10) is less than a preset temperature value when the special-shaped energy dissipation resistor (10) is started.

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