Heat dissipation structure of energy storage inverter and heat dissipation method thereof

Abstract

The invention relates to the technical field of electricity and heat management, in particular to a heat dissipation structure of an energy storage inverter and a heat dissipation method of the heat dissipation structure. Heat emitted by the first heating assembly and the second heating assembly is conducted to the heat dissipation assembly through the heat conduction assembly, and the third heating assembly is arranged at an air outlet of the heat dissipation assembly; in the working process of the heat dissipation assembly, heat transmitted from the heat conduction assembly and heat emitted by the third heating assembly are blown out together. The air flow distribution and the heat exchange effect are optimized from the air duct path design, the hot spot temperature of heating devices in the energy storage inverter can be reduced, the problems that local devices are too high in heating and the temperature difference of high heating devices of the same type is large can be solved, the heat stability of the energy storage inverter is improved, and the service life of the energy storage inverter is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of electricity and thermal management, and in particular to a heat dissipation structure of an energy storage inverter and a heat dissipation method thereof. Background Art

[0002] In modern power systems, energy storage inverters play a vital role, and they are responsible for efficiently converting electrical energy between different forms (such as DC and AC). However, energy storage inverters will inevitably generate a lot of heat during the power conversion process. This is mainly due to the fact that many electronic components inside them, such as inductors, capacitors, and insulated gate bipolar transistors (IGBTs), lose energy when working, and these losses are dissipated in the form of heat.

[0003] As power conversion continues, if the heat-generating devices cannot be cooled in a timely and effective manner, the internal temperature of the energy storage inverter will rise sharply. Once the internal temperature is too high, it will have a serious negative impact on the performance and safety of the energy storage inverter. For example, high temperature will increase the on-resistance of power semiconductor devices, thereby further increasing their power consumption and significantly reducing the power conversion efficiency; at the same time, excessively high temperatures will accelerate the aging and damage of electronic components, reduce their reliability and service life, and may even cause faults such as short circuits, endangering the safe and stable operation of the entire power system.

[0004] Among the existing heat dissipation methods, active heat sinks (such as air cooling) are widely used due to their simple structure, low cost and high heat dissipation efficiency. However, in actual application, this heat dissipation method still has design defects. Even if the air volume of the selected cooling fan is large enough, the air volume generated by the cooling fan cannot be effectively utilized due to reasons such as poor air conduction inside the heat dissipation structure. For example, due to unreasonable air duct design, narrow parts or obstacles, air flow is blocked and turbulence increases, and cold air cannot be evenly delivered to each heating component, so that heat cannot be fully taken away. In this case, the thermal failure of the internal components of the energy storage inverter will be accelerated, and the originally expected service life will be greatly reduced. Not only will the maintenance cost and replacement frequency of the equipment be increased, but equipment failure may also lead to a series of adverse consequences such as power supply interruption.

[0005] In view of this, overcoming the defects of the prior art is an urgent problem to be solved in the field of this technology. Summary of the invention

[0006] The technical problem to be solved by the present invention is how to enhance the heat dissipation effect inside the energy storage inverter.

[0007] The present invention adopts the following technical solution:

[0008] In a first aspect, a heat dissipation structure of an energy storage inverter is provided, wherein the energy storage inverter comprises a first heat generating component 1, a second heat generating component 2 and a third heat generating component 3, and the heat dissipation structure comprises: a heat conducting component 4 and a heat dissipation component 5, wherein the heat conducting component 4 is arranged on the heat dissipation component 5;

[0009] The first heating component 1 and the second heating component 2 are arranged on the heat conducting component 4, and the third heating component 3 is arranged at the air outlet position of the heat dissipation component 5;

[0010] The heat conducting component 4 is used to guide the heat generated by the first heating component 1 and the second heating component 2 to the heat dissipating component 5;

[0011] The heat dissipation component 5 is used to blow out the heat generated by the first heat-generating component 1 and the second heat-generating component 2 and the heat of the third heat-generating component 3 , so as to dissipate heat for the first heat-generating component 1 , the second heat-generating component 2 and the third heat-generating component 3 .

[0012] Preferably, the heat conducting component 4 includes a first heat conducting portion 41, a second heat conducting portion 42, a third heat conducting portion 43 and a fourth heat conducting portion 44;

[0013] The third heat conducting part 43 is provided with a first through hole 431 , the fourth heat conducting part 44 is provided with a second through hole 441 and a heat collecting member 442 , and the first through hole 431 and the second through hole 441 are arranged opposite to each other;

[0014] The first heat-generating component 1 is disposed on the first heat-conducting portion 41, the first heat-conducting portion 41 is disposed on the second heat-conducting portion 42, the second heat-conducting portion 42 is disposed in the first through hole 431 and the second through hole 441, and the bottom of the second heat-conducting portion 42 is connected to the heat-dissipating component 5;

[0015] The second heat-generating component 2 is disposed on the third heat-conducting portion 43 , the third heat-conducting portion 43 is disposed on the heat-collecting member 442 , and the heat-collecting member 442 is connected to the heat-dissipating component 5 .

[0016] Preferably, a heat sink 443 is further provided on the fourth heat conducting portion 44, and the heat sink 443 is connected to the heat collecting member 442;

[0017] The heat dissipation assembly 5 includes an active radiator 51 and a passive radiator 52. The passive radiator 52 is arranged at the bottom of the heat collecting element 442 and is located on one side of the heat dissipation element 443; the active radiator 51 is arranged on the other side of the heat dissipation element 443 so that the airflow blown out by the active radiator 51 passes through the passive radiator 52.

[0018] Preferably, a heat conducting plate 432 and a ventilation plate 433 are provided on the third heat conducting part 43, the heat conducting plate 432 and the ventilation plate 433 are connected, the first through hole 431 is provided on the ventilation plate 433; the second heating component 2 is provided on the heat conducting plate 432; the bottom of the ventilation plate 433 is connected to the heat collecting member 442;

[0019] The heat generated by the second heating component 2 is conducted to the passive radiator 52 through the heat conducting plate 432 , the ventilation plate 433 and the heat collecting member 442 in sequence.

[0020] Preferably, the ventilation plate 433 is provided with ventilation holes 434, and the position of the ventilation holes 434 matches the position of the active radiator 51;

[0021] A portion of the airflow blown out from the active radiator 51 passes through the passive radiator 52 , and another portion of the airflow passes through the ventilation holes 434 and is blown into the space where the first heat generating component 1 and the second heat generating component 2 are located.

[0022] Preferably, the heat dissipation structure also includes a first air guide portion 6, one end of which is fixed to the bottom of the heat sink 443, the passive radiator 52 is arranged between the first air guide portion 6 and the heat collecting component 442, and there is an air guide gap between the first air guide portion 6 and the passive radiator 52.

[0023] Preferably, the heat dissipation structure further includes a second air guide portion 7, the second air guide portion 7 includes a first air guide cover 71, a second air guide cover 72 and a third air guide cover 73; the first air guide cover 71 and the second air guide cover 72 are symmetrically arranged, and the third air guide cover 73 is arranged at one end of the first air guide cover 71 and the second air guide cover 72; the tops of the first air guide cover 71 and the second air guide cover 72 are connected to the third heat conducting portion 43;

[0024] A portion of the third heating component 3 is disposed between the first air guide cover 71 and the second air guide cover 72, and another portion of the third heating component 3 is disposed at the bottom of the third air guide cover 73;

[0025] The airflow blown out by the active heat sink 51 passes through the space between the first air guide portion 6 and the heat collecting member 442 , the first air guide cover 71 , the space surrounded by the second air guide cover 72 and the third heat conducting portion 43 , and the third air guide cover 73 in sequence before being blown out.

[0026] Preferably, the air inlet ends of the first air guide cover 71 and the second air guide cover 72 extend outward, and the air outlet ends of the first air guide cover 71 and the second air guide cover 72 extend inward;

[0027] The air inlet end of the third air guide cover 73 extends outward to gather the air volume inward.

[0028] Preferably, the passive radiator 52 is a heat sink fin, and the active radiator 51 includes at least one fan.

[0029] In a second aspect, a heat dissipation method of a heat dissipation structure of an energy storage inverter is provided, wherein the method implements the heat dissipation structure of the energy storage inverter as described in the first aspect, and comprises:

[0030] The heat conducting component 4 guides the heat generated by the first heating component 1 and the second heating component 2 to the heat dissipating component 5;

[0031] The heat dissipation component 5 blows out the heat generated by the first heat-generating component 1 and the second heat-generating component 2 and the heat of the third heat-generating component 3 to dissipate heat for the first heat-generating component 1 , the second heat-generating component 2 and the third heat-generating component 3 .

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention arranges the first heating component 1 and the second heating component 2 on the energy storage inverter on the heat conducting component 4, conducts the heat emitted by the first heating component 1 and the second heating component 2 to the heat dissipation component 5 through the heat conducting component 4, and arranges the third heating component 3 at the air outlet position of the heat dissipation component 5; during the operation of the heat dissipation component 5, the heat transmitted from the heat conducting component 4 and the heat emitted by the third heating component 3 are blown out together; the air flow distribution and the heat exchange effect are optimized from the perspective of the air duct path design, which can not only reduce the hot spot temperature of the heating device in the energy storage inverter, but also solve the problems of excessive heating of local devices and large temperature differences of the same type of high heating devices, thereby improving the thermal stability and service life of the energy storage inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a structural schematic diagram of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0036] Figure 2 is another structural schematic diagram of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0037] Figure 3 is a structural schematic diagram of a third heat conducting part of an energy storage inverter provided by an embodiment of the present invention;

[0038] Figure 4 is a structural schematic diagram of a fourth heat conducting part of an energy storage inverter provided by an embodiment of the present invention;

[0039] Figure 5 is a more specific structural schematic diagram of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0040] Figure 6 is another specific structural schematic diagram of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0041] Figure 7 is a structural schematic diagram of a third heating component of an energy storage inverter provided by an embodiment of the present invention;

[0042] Figure 8 It is a schematic diagram of the assembly structure of a second air guide portion of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0043] Fig. 9 It is a specific structural schematic diagram of a second air guide portion of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0044] Fig.10 It is a schematic diagram of a top view of the structure of a second air guide portion of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0045] Fig.11 It is a front view structural schematic diagram of a second air guide portion of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention;

[0046] Fig.12 It is a flow chart of a heat dissipation method of a heat dissipation structure of an energy storage inverter provided by an embodiment of the present invention.

[0047] In all drawings, the same reference numerals refer to the same structure, wherein:

[0048] The first heating component 1, the second heating component 2, the third heating component 3, the heat conducting component 4, the first heat conducting part 41, the second heat conducting part 42, the third heat conducting part 43, the first through hole 431, the heat conducting plate 432, the ventilation plate 433, the ventilation hole 434, the fourth heat conducting part 44, the second through hole 441, the heat collecting part 442, the heat dissipating part 443, the heat dissipating component 5, the active radiator 51, the passive radiator 52, the first air guide part 6, the second air guide part 7, the first air guide cover 71, the second air guide cover 72, and the third air guide cover 73. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] Unless the context requires otherwise, throughout the specification and claims, the term "including" is to be interpreted as open inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the embodiments or examples of the above terms due to reasons such as the order and position of appearance, it is not limited to that they can be carried in combination by one embodiment or example.

[0051] In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "multiple" is two or more. In addition, for example, the same type of nouns may be described as two independent individuals by adding "A" and "B" at the end. In this case, the corresponding features defined as "A" and "B" are only used to distinguish the same type of individuals for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0052] When describing some embodiments, the expressions "coupling", "coupling" and "connection" and their derivatives may be used. For example, when describing some embodiments, the term "connection" may be used to indicate that two or more components are in direct physical or electrical contact with each other. For another example, when describing some embodiments, the term "coupling" may be used to indicate that two or more components are in direct physical or electrical contact. However, the terms "connection" or "coupling" may also refer to two or more components that are not in direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the contents of the present invention.

[0053] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0054] Embodiment 1:

[0055] In the existing heat dissipation structure of the energy storage inverter, even if the air volume of the selected heat dissipation fan is large enough, the air volume generated by the heat dissipation fan cannot be effectively utilized due to reasons such as poor air conduction inside the heat dissipation structure, resulting in poor cooling effect on the heating components in the energy storage inverter, seriously affecting the normal operation of the energy storage inverter.

[0056] In order to solve the above problems, Embodiment 1 of the present invention provides a heat dissipation structure of an energy storage inverter. Before specifically describing the heat dissipation structure proposed in this embodiment, an energy storage inverter is first described. In one embodiment, Figure 1 As shown, the energy storage inverter includes a first heating component 1, a second heating component 2 and a third heating component 3; wherein the first heating component 1 is provided with a capacitor component, which is a high-heating device; the second heating component 2 is provided with an IGBT module, which is a high-heating device, such as a high-frequency MOS switch tube; the third heating component 3 is provided with a capacitor component and an inductor component, which are both high-heating devices. It is worth noting that Figure 1 It is only schematically represented and the specific related components in the heat generating component are not drawn.

[0057] In one embodiment, Figure 1 and Figure 2 As shown, the heat dissipation structure includes: a heat-conducting component 4 and a heat dissipation component 5, the heat-conducting component 4 is arranged on the heat dissipation component 5; the first heating component 1 and the second heating component 2 are arranged on the heat-conducting component 4, and the third heating component 3 is arranged at the air outlet position of the heat dissipation component 5; the heat-conducting component 4 is used to guide the heat emitted by the first heating component 1 and the second heating component 2 to the heat dissipation component 5; the heat dissipation component 5 is used to blow out the heat emitted by the first heating component 1 and the second heating component 2 and the heat of the third heating component 3, so as to dissipate heat for the first heating component 1, the second heating component 2 and the third heating component 3.

[0058] Among them, the heat-conducting component 4 has good thermal conductivity. When the first heating component 1 and the second heating component 2 generate heat during operation, the heat will be transferred to the heat-conducting component 4 by heat conduction, and the heat dispersed on the two heating components can be effectively guided and gathered, and then transferred toward the heat dissipation component 5 connected thereto, ensuring that the heat can enter the subsequent heat dissipation process.

[0059] On the one hand, the heat dissipation component 5 is connected to the heat conductive component 4, and receives the heat from the first heating component 1 and the second heating component 2 conducted by the heat conductive component 4; on the other hand, the third heating component 3 is arranged at its air outlet position, so that the heat dissipation component 5 can handle the heat dissipation problem from three different heating components at the same time.

[0060] In one embodiment, the heat dissipation component 5 is usually equipped with active heat dissipation components such as fans or specially designed air duct structures and other devices that are conducive to heat dissipation. For the heat conducted from the heat-conducting component 4, the heat dissipation component 5 will use the airflow generated by the rotation of the fan or the natural airflow guided by the air duct to accelerate the flow of hot air, thereby blowing the heat out to the external environment. As for the third heating component 3 at the air outlet position, when the heat dissipation component 5 is working, the blown airflow will also take away the heat generated by the third heating component 3 to dissipate its heat. In this way, the entire heat dissipation component 5 creates a good heat dissipation environment for the first heating component 1, the second heating component 2 and the third heating component 3, ensuring that they will not experience performance degradation, damage and other problems due to heat accumulation during operation, which helps the energy storage inverter to operate stably and reliably.

[0061] In order to effectively conduct the heat generated by the first heating component 1 and the second heating component 2 to the heat dissipation component 5, in one embodiment, Figure 1 and Figure 2 As shown, the heat conducting component 4 includes a first heat conducting portion 41, a second heat conducting portion 42, a third heat conducting portion 43 and a fourth heat conducting portion 44; Figure 3 As shown, the third heat conducting portion 43 is provided with a first through hole 431. Figure 4 As shown, the fourth heat-conducting part 44 is provided with a second through hole 441 and a heat collecting part 442, and the first through hole 431 and the second through hole 441 are arranged opposite to each other; the first heat-conducting part 1 is arranged on the first heat-conducting part 41, the first heat-conducting part 41 is arranged on the second heat-conducting part 42, the second heat-conducting part 42 is arranged in the first through hole 431 and the second through hole 441, and the bottom of the second heat-conducting part 42 is connected to the heat dissipation component 5; the second heat-conducting component 2 is arranged on the third heat-conducting part 43, the third heat-conducting part 43 is arranged on the heat collecting part 442, and the heat collecting part 442 is connected to the heat dissipation component 5.

[0062] The part of the first heat-conducting part 41 that is in close contact with the first heat-generating component 1 is responsible for receiving the heat generated by the first heat-generating component 1. At the same time, the first heat-conducting part 41 is arranged on the second heat-conducting part 42, and there is a connection method such as bonding between the two, so that the heat collected by the first heat-conducting part 41 can be transferred to the second heat-conducting part 42, and then transferred to the subsequent heat dissipation link. In one embodiment, the first heat-conducting part 41 is not only used to transfer the heat of the first heat-generating component 1 downward, but also used to fix and support the first heat-generating component 1.

[0063] On the one hand, the second heat-conducting part 42 receives the heat conducted from the first heat-conducting part 41. It is arranged in the first through hole 431 of the third heat-conducting part 43 and the second through hole 441 of the fourth heat-conducting part 44, and its bottom is connected to the heat dissipation component 5. The second heat-conducting part 42 can further transfer the heat downward to the heat dissipation component 5, and dissipate the heat with the help of the heat dissipation component 5. In one embodiment, the second heat-conducting part 42 is a heat-conducting medium such as thermal grease.

[0064] The third heat conducting part 43 is a part for collecting heat from the second heating component 2. The bottom is connected to the heat collecting part 442, and can conduct heat to the heat collecting part 442, and then the heat collecting part 442 transfers the heat to the heat dissipation component 5 connected thereto to achieve heat dissipation. In order to achieve the heat transmission effect, in one embodiment, a limit screw (not numbered in the figure) is provided between the first heat conducting part 41 and the third heat conducting part 43, so that a gap is left between the first heat conducting part 41 and the third heat conducting part 43 to allow airflow to flow and accelerate heat dissipation.

[0065] The heat collecting member 442 on the fourth heat conducting part 44 plays the role of collecting heat. The third heat conducting part 43 is arranged on the heat collecting member 442, which can transfer the heat of the second heating component 2, and then transfer the heat to the heat dissipation component 5 through the connection between the heat collecting member 442 and the heat dissipation component 5, and finally realize the discharge of heat. In one embodiment, the fourth heat conducting part 44 is also used to support and fix the third heat conducting part 43 while conducting heat. The fourth heat conducting part 44 adopts a heat pipe-like air-cooled heat dissipation metal ring design, which can accelerate the conduction and dissipation of heat. In a specific embodiment, it can also be set as a heat pipe, and the specific structure of the fourth heat conducting part 44 is not further limited.

[0066] In summary, through the ingenious structural design of each part and the close connection between each other, a complete set of heat collection and conduction paths is constructed, which can accurately and orderly guide the heat generated by the first heating component 1 and the second heating component 2 to the heat dissipation component 5, laying a solid foundation for the effective heat dissipation of the energy storage inverter.

[0067] In order to improve the heat dissipation effect, in one embodiment, Figure 4 As shown, the fourth heat conducting portion 44 is further provided with a heat sink 443, and the heat sink 443 is connected to the heat collecting member 442; Figure 1 and Figure 2 As shown, the heat dissipation assembly 5 includes an active radiator 51 and a passive radiator 52. The passive radiator 52 is arranged at the bottom of the heat collecting element 442 and is located on one side of the heat dissipation element 443; the active radiator 51 is arranged on the other side of the heat dissipation element 443 so that the airflow blown out by the active radiator 51 passes through the passive radiator 52.

[0068] The passive radiator 52 is a heat sink fin, and the active radiator 51 includes at least one fan.

[0069] The passive radiator 52 is arranged at the bottom of the heat collecting member 442 and at one side of the heat dissipating member 443, connected to the bottom of the heat collecting member 442, and directly obtains the heat conducted from the heat collecting member 442. The passive radiator 52 mainly relies on natural heat exchange methods such as natural convection and thermal radiation to dissipate the absorbed heat. For example, it can increase the contact area with the surrounding air through its own heat dissipating fins and other structures, so that the heat is naturally transferred to the surrounding air, realizing the slow but stable dissipation of heat, and playing an auxiliary role in continuous and stable heat dissipation in the entire heat dissipation system.

[0070] The active radiator 51 is arranged on the other side of the heat sink 443, so that the airflow blown out by the active radiator 51 can pass through the passive radiator 52. The active radiator 51 is generally equipped with a device that actively generates airflow, such as a fan. Through the rotation of the fan, a directional airflow can be quickly generated. The airflow will pass through the heat sink 443 and the passive radiator 52 after being blown out, helping the passive radiator 52 to speed up the heat dissipation speed and improve the overall heat dissipation efficiency. Specifically, the active radiator 51 is a fan group, and one or multiple fans are arranged in parallel.

[0071] Through the cooperation of the active radiator 51 and the passive radiator 52, the heat from the heat collecting element 442 can be effectively dissipated, and the design of allowing the air flow to pass through the passive radiator 52 realizes the coordinated cooperation of active heat dissipation and passive heat dissipation, and fully utilizes the advantages of both, which not only ensures the speed of heat dissipation, but also maintains a relatively stable and comprehensive heat dissipation effect, ensuring that the heat generated by each heating component of the energy storage inverter can be efficiently dissipated to the external environment, thereby ensuring the normal and stable operation of the equipment.

[0072] In order to effectively conduct the heat generated by the second heat generating component 2 to the passive heat sink 52, in one embodiment, Figure 3As shown, a heat conducting plate 432 and a ventilation plate 433 are provided on the third heat conducting part 43, the heat conducting plate 432 and the ventilation plate 433 are connected, and the first through hole 431 is arranged on the ventilation plate 433; the second heating component 2 is arranged on the heat conducting plate 432; the bottom of the ventilation plate 433 is connected to the heat collecting part 442; the heat emitted by the second heating component 2 is successively transmitted through the heat conducting plate 432, the ventilation plate 433 and the heat collecting part 442 to the passive radiator 52.

[0073] The heat conducting plate 432 has good heat conduction performance, and its main function is to efficiently collect heat from the second heat generating component 2, and transfer the heat to the ventilation plate 433 connected thereto as losslessly as possible. The ventilation plate 433 is connected to the heat conducting plate 432 on the one hand, receiving the heat conducted by the heat conducting plate 432, and on the other hand, efficiently transfers the heat received from the heat conducting plate 432 to the heat collecting member 442, which then conducts the heat to the heat dissipating member 443, and then reaches the passive radiator 52, thereby ensuring the continuity of the heat transfer path.

[0074] In one embodiment, Figure 3 As shown, ventilation holes 434 are provided on the ventilation plate 433, and the positions of the ventilation holes 434 match the positions of the active radiator 51; a part of the airflow blown out by the active radiator 51 passes through the passive radiator 52, and the other part is blown into the space where the first heating component 1 and the second heating component 2 are located through the ventilation holes 434.

[0075] In order to prevent air flow turbulence, corresponding air outlets (not shown in the figure) can be set in the space where the first heating component 1 and the second heating component 2 are located. The airflow blown from the ventilation hole 434 passes through and takes away the heat emitted by the first heating component 1 and the second heating component 2, and then blows out from the corresponding air outlets, thereby avoiding air flow turbulence in the space where the first heating component 1 and the second heating component 2 are located.

[0076] The ventilation hole 434 is arranged near the air intake end of the active radiator 51. The ventilation hole 434 can bring the wind sucked in by the active radiator 51 into the space where the first heating component 1 and the second heating component 2 are located, and then take away the heat in the space where the first heating component 1 and the second heating component 2 are located through the flowing air, thereby achieving the heat dissipation effect.

[0077] Specifically, when the active radiator 51 is working, a part of the airflow is sucked into the active radiator 51 and blown toward the passive radiator 52 and the third heating component 3, and another part of the airflow enters the space where the first heating component 1 and the second heating component 2 are located through the ventilation holes 434, and the heat in the space is brought to the outside through the natural convection of the air to achieve the effect of heat dissipation and cooling. The setting of the ventilation holes 434 establishes a second heat dissipation path for some heating components (the first heating component 1 and the second heating component 2), further improving the overall thermal stability and life of the energy storage inverter.

[0078] In order to enable the airflow blown out by the active heat sink 51 to be effectively blown to the third heat generating component 3, in one embodiment, Figure 5 and Figure 6 As shown, the heat dissipation structure also includes a first air guide portion 6, one end of which is fixed to the bottom of the heat dissipation element 443, the passive radiator 52 is arranged between the first air guide portion 6 and the heat collecting element 442, and there is an air guide gap between the first air guide portion 6 and the passive radiator 52.

[0079] The passive radiator 52 is arranged between the first air guide 6 and the heat collector 442. Such a layout forms a specific spatial structure among the first air guide 6, the passive radiator 52 and the heat collector 442. There is an air guide gap between the first air guide 6 and the passive radiator 52. The air guide gap provides the necessary spatial conditions for the passage and guidance of the airflow, ensuring that the airflow can flow along the designed path without affecting the heat dissipation and other related processes due to too close contact.

[0080] The core function of the first air guide 6 is to guide the airflow blown out by the active radiator 51 so that the airflow can be blown to the third heating component 3 more accurately and effectively. After the airflow generated by the active radiator 51 is blown out, it will first pass through the area near the heat sink 443. At this time, the first air guide 6 uses its own shape and the structural relationship formed with the surrounding components to guide the airflow to flow in a predetermined direction, and through the air guide gap between the first air guide 6 and the passive radiator 52, the airflow can smoothly bypass the passive radiator 52 and flow toward the air outlet position where the third heating component 3 is located. In this way, the airflow that may have originally diffused disorderly or could not accurately reach the target position can, under the guidance of the first air guide 6, participate in the heat dissipation process of the third heating component 3 more efficiently, ensuring that the third heating component 3 can dissipate heat in a timely and effective manner and maintain its normal working state.

[0081] In order to further guide the airflow blown out by the active heat sink 51 to flow through the third heat generating component 3, in one embodiment, Figure 5-Figure 8As shown, the heat dissipation structure further includes a second air guide portion 7, and the second air guide portion 7 includes a first air guide cover 71, a second air guide cover 72 and a third air guide cover 73; the first air guide cover 71 and the second air guide cover 72 are symmetrically arranged, and the third air guide cover 73 is arranged at one end of the first air guide cover 71 and the second air guide cover 72; the tops of the first air guide cover 71 and the second air guide cover 72 are connected to the third heat conducting portion 43; as shown Figure 7 and Figure 8 As shown, a part of the third heating component 3 (indicated by M in the figure) is arranged between the first air guide cover 71 and the second air guide cover 72, and another part of the third heating component 3 (indicated by N in the figure) is arranged at the bottom of the third air guide cover 73; the airflow blown out by the active radiator 51 passes through the space between the first air guide part 6 and the heat collecting part 442, the space enclosed by the first air guide cover 71, the second air guide cover 72 and the third heat conducting part 43, and the third air guide cover 73 in sequence and then blows out.

[0082] In one embodiment, referring to Figure 7 and Figure 8 , three heating (capacitor) devices are provided in the M part, which are respectively represented as X, Y and Z. Among them, a guide plate H is provided on each heating device, and the guide plate H on each heating device is inverted on the corresponding heating device to enhance local heat dissipation. In one embodiment, the guide plate H is in an inverted U shape, and the specific shape can be set according to the shape of the heating device. When it is ensured that there is a certain distance between the inner wall of the guide plate H and the heating device, according to the direction of airflow, the airflow of the inner wall of the guide plate H close to the heating device will be strengthened to a certain extent than when no guide plate is added. According to the simulation test results, after adding the guide plate H, the temperature of the local heating point can be reduced by 5%-8%.

[0083] In order to facilitate airflow, a gap is left between the third air guide cover 73 and the third heating component 3 according to the size of the third heating component 3 to allow airflow to flow.

[0084] In one embodiment, the first air guide cover 71 and the second air guide cover 72 are symmetrically arranged, and the top is connected to the heat conduction plate 432, thereby forming an air guide channel consisting of the heat conduction plate 432, the first air guide cover 71 and the second air guide cover 72; the third air guide cover 73 is arranged at one end of the first air guide cover 71 and the second air guide cover 72, and it plays the role of gathering and guiding the final blowing direction of the airflow, and cooperates with the first two to jointly construct a relatively complete air guide structure, which plays a key role in controlling the direction of the airflow.

[0085] In one embodiment, the airflow blown out from the active radiator 51 first passes through the space between the first air guide part 6 and the heat collecting part. During this process, the airflow can take away part of the heat emitted by the surrounding components in this area (such as the passive radiator 52 and the heat collecting part 442, etc.); when the airflow enters the air guide channel surrounded by the first air guide cover 71, the second air guide cover 72 and the heat conducting plate 432, due to its relatively closed and regular structural characteristics, the airflow will be constrained in this space, so as to act more concentratedly on a part of the third heating component 3 located therein, thereby achieving efficient heat dissipation of this part, so that the heat can be quickly taken away with the airflow, thereby avoiding heat accumulation on the third heating component 3.

[0086] After passing through the front space, the airflow is finally blown out through the third air guide cover 73. The third air guide cover 73 guides and gathers the airflow in the final step, so that the airflow is blown out in the desired direction, ensuring the orderliness of the airflow during the entire heat dissipation process, and also allowing the airflow to better dissipate the carried heat to the surrounding environment when leaving the air guide system, further improving the heat dissipation efficiency of the entire heat dissipation structure, and ensuring that the third heat generating component 3 and even the entire energy storage inverter can operate stably under a suitable temperature environment.

[0087] In order to enable the airflow from the active radiator 51 to flow along a predetermined route, in one embodiment, the air inlet ends of the first air guide cover 71 and the second air guide cover 72 extend outward, and the air outlet ends of the first air guide cover 71 and the second air guide cover 72 extend inward; the air inlet end of the third air guide cover 73 extends outward to gather the air volume inward.

[0088] The air inlet ends of the first air guide cover 71 and the second air guide cover 72 are extended outward, and this design can increase the air inlet area. When the airflow from the active radiator 51 approaches, the airflow can be captured more widely, so that the airflow can enter the air guide channel constructed by the first air guide cover 71 and the second air guide cover 72 more smoothly, reducing the possibility of airflow escaping and ensuring that there is enough air volume to enter the subsequent heat dissipation area.

[0089] The structure that the outlet ends of the first air guide cover 71 and the second air guide cover 72 are contracted and extended inwardly makes the air guide cover form a relatively narrow passage at the outlet. This narrowing design can accelerate the airflow entering the air guide cover, and the airflow speed increases when passing through here, thereby enhancing the heat dissipation effect of the airflow on the part of the third heating component 3 located therein.

[0090] The air inlet end of the third air guide cover 73 extends outward, and this design is also for increasing the air inlet area, but its main function is to gather the air volume inward. After the airflow flows out from the first air guide cover 71 and the second air guide cover 72, the third air guide cover 73 can better gather the dispersed airflow through its extended air inlet end, so that the air volume is more concentrated when entering its internal space, avoiding the loss of air volume, thereby better dissipating heat for another part of the third heating component 3.

[0091] In one embodiment, Fig. 9 and Fig.10 As shown, the expansion and extension of the air inlet end refers to increasing the air inlet area of ​​the air inlet end of the first air guide cover 71 and the second air guide cover 72 to increase the amount of air entering from the air inlet end; the contraction and extension refers to reducing the air outlet area of ​​the air outlet end of the first air guide cover 71 and the second air guide cover 72 to increase the wind speed at the air outlet end, both of which are beneficial to heat dissipation of the third heating component 3. In one embodiment, the first air guide cover 71 and the second air guide cover 72 are provided with a first wedge angle A and a second wedge angle B, and the third air guide cover 73 is provided with a third wedge angle C, the first wedge angle A is set at the air inlet end of the first air guide cover 71 and the second air guide cover 72, and the second wedge angle B is set at the air outlet end of the first air guide cover 71 and the second air guide cover 72 to facilitate the flow of air. As shown Fig.11 As shown, the third wedge angle C is arranged at the air inlet end of the third air guide cover 73 to facilitate the flow of air.

[0092] This embodiment optimizes the airflow distribution and heat exchange effect from the perspective of air duct path design, so that the heat exchange effect of the airflow in the space where the heating component is located is further enhanced, the overall temperature reduction of the heating component can reach a maximum of 30%, and the thermal stability of the energy storage inverter is greatly improved.

[0093] In this embodiment, the first heating component 1 and the second heating component 2 on the energy storage inverter are arranged on the heat conducting component 4, and the heat emitted by the first heating component 1 and the second heating component 2 is conducted to the heat dissipation component 5 through the heat conducting component 4, and the third heating component 3 is arranged at the air outlet position of the heat dissipation component 5; during the operation of the heat dissipation component 5, the heat transmitted from the heat conducting component 4 and the heat emitted by the third heating component 3 are blown out together; the air flow distribution and the heat exchange effect are optimized from the perspective of the air duct path design, which can not only reduce the hot spot temperature of the heating device in the energy storage inverter, but also solve the problems of excessive heating of local devices and large temperature differences of the same type of high heating devices, thereby improving the thermal stability and service life of the energy storage inverter.

[0094] Embodiment 2:

[0095] In the first embodiment, a heat dissipation structure of an energy storage inverter is proposed. In the present embodiment, a heat dissipation method of the heat dissipation structure of an energy storage inverter is proposed. Fig.12 As shown, including:

[0096] Step 101 : the heat-conducting component 4 guides the heat generated by the first heat-generating component 1 and the second heat-generating component 2 to the heat-dissipating component 5 .

[0097] When the energy storage inverter is working, the first heating component 1, the second heating component 2 and the third heating component 3 generate heat. The first heating component 1 conducts heat to the passive radiator 52 and the active radiator 51 through the first heat conducting part 41 and the second heat conducting part 42; the second heating component 2 conducts heat to the passive radiator 52 and the active radiator 51 through the third heat conducting part 43 and the fourth heat conducting part 44.

[0098] Step 102: The heat dissipation component 5 blows out the heat generated by the first heat generating component 1 and the second heat generating component 2 and the heat of the third heat generating component 3 to dissipate heat for the first heat generating component 1 , the second heat generating component 2 and the third heat generating component 3 .

[0099] The active radiator 51 actively blows air, and under the guidance and convergence of the first air guide part 6 and the second air guide part 7, blows the heat on the heat sink 443 and the heat on the passive radiator 52 to the space where the third heating component 3 is located. The heat dissipating airflow after convergence and guidance will more efficiently take away the heat to the outside when flowing through the space where the third heating component 3 is located, thereby achieving the purpose of simultaneously dissipating heat and cooling the first heating component 1, the second heating component 2 and the third heating component 3.

[0100] The arrangement of the first air guide portion 6 and the second air guide portion 7 enables the air ducts flowing through the active radiator 51 and the passive radiator 52 to converge in a manner of gradually contracting left and right and up and down, thereby reducing a large amount of ineffective air blowing on the left and right sides and up and down sides, and can more efficiently concentrate the heat dissipation airflow to the high heat generation area of ​​the third heat generating component 3.

[0101] At the same time, ventilation holes 434 are provided on the third heat-conducting part 43. When the active radiator 51 is working, a part of the airflow is sucked into the active radiator 51 and blown toward the passive radiator 52 and the third heating component 3, and the other part of the airflow enters the space where the first heating component 1 and the second heating component 2 are located through the ventilation holes 434. The heat in the space is brought to the outside through the flow of natural convection of the air, thereby further achieving the effect of heat dissipation and cooling of the first heating component 1 and the second heating component 2.

[0102] For the specific structure of the heat dissipation structure of the energy storage inverter, please refer to Example 1, which will not be repeated in this embodiment.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation structure of an energy storage inverter, characterized in that: The energy storage inverter comprises a first heat generating component (1), a second heat generating component (2) and a third heat generating component (3); the heat dissipation structure comprises: a heat conducting component (4) and a heat dissipation component (5); the heat conducting component (4) is arranged on the heat dissipation component (5); The first heating component (1) and the second heating component (2) are arranged on the heat-conducting component (4), and the third heating component (3) is arranged at the air outlet position of the heat dissipation component (5); The heat-conducting component (4) is used to guide the heat generated by the first heat-generating component (1) and the second heat-generating component (2) to the heat-dissipating component (5); The heat dissipation component (5) is used to blow out the heat generated by the first heat-generating component (1) and the second heat-generating component (2) as well as the heat of the third heat-generating component (3), so as to dissipate heat for the first heat-generating component (1), the second heat-generating component (2) and the third heat-generating component (3).

2. The heat dissipation structure of the energy storage inverter according to claim 1, characterized in that: The heat conducting component (4) comprises a first heat conducting portion (41), a second heat conducting portion (42), a third heat conducting portion (43) and a fourth heat conducting portion (44); The third heat conducting part (43) is provided with a first through hole (431), the fourth heat conducting part (44) is provided with a second through hole (441) and a heat collecting member (442), and the first through hole (431) and the second through hole (441) are arranged opposite to each other; The first heat-generating component (1) is arranged on the first heat-conducting portion (41), the first heat-conducting portion (41) is arranged on the second heat-conducting portion (42), the second heat-conducting portion (42) is arranged in the first through hole (431) and the second through hole (441), and the bottom of the second heat-conducting portion (42) is connected to the heat-dissipating component (5); The second heat-generating component (2) is arranged on the third heat-conducting portion (43), the third heat-conducting portion (43) is arranged on the heat-collecting component (442), and the heat-collecting component (442) is connected to the heat-dissipating component (5).

3. The heat dissipation structure of the energy storage inverter according to claim 2, characterized in that: The fourth heat conducting portion (44) is also provided with a heat dissipation element (443), and the heat dissipation element (443) is connected to the heat collecting element (442); The heat dissipation assembly (5) comprises an active heat sink (51) and a passive heat sink (52); the passive heat sink (52) is arranged at the bottom of the heat collecting element (442) and is located on one side of the heat dissipation element (443); the active heat sink (51) is arranged on the other side of the heat dissipation element (443) so that the airflow blown out by the active heat sink (51) passes through the passive heat sink (52).

4. The heat dissipation structure of the energy storage inverter according to claim 3, characterized in that: The third heat-conducting portion (43) is provided with a heat-conducting plate (432) and a ventilation plate (433), the heat-conducting plate (432) and the ventilation plate (433) are connected, and the first through hole (431) is arranged on the ventilation plate (433); the second heating component (2) is arranged on the heat-conducting plate (432); the bottom of the ventilation plate (433) is connected to the heat collecting component (442); The heat generated by the second heat generating component (2) is sequentially transmitted through the heat conducting plate (432), the ventilation plate (433) and the heat collecting member (442) and then conducted to the passive radiator (52).

5. The heat dissipation structure of the energy storage inverter according to claim 4, characterized in that: The ventilation plate (433) is provided with a ventilation hole (434), and the position of the ventilation hole (434) matches the position of the active radiator (51); Part of the airflow blown out by the active radiator (51) passes through the passive radiator (52), and the other part is blown into the space where the first heat-generating component (1) and the second heat-generating component (2) are located through the ventilation hole (434).

6. The heat dissipation structure of the energy storage inverter according to claim 3, characterized in that: The heat dissipation structure further comprises a first air guide portion (6), one end of the first air guide portion (6) being fixed to the bottom of the heat dissipation element (443), the passive heat sink (52) being arranged between the first air guide portion (6) and the heat collecting element (442), and an air guide gap being present between the first air guide portion (6) and the passive heat sink (52).

7. The heat dissipation structure of the energy storage inverter according to claim 3, characterized in that: The heat dissipation structure further comprises a second air guide portion (7), wherein the second air guide portion (7) comprises a first air guide cover (71), a second air guide cover (72) and a third air guide cover (73); the first air guide cover (71) and the second air guide cover (72) are symmetrically arranged, and the third air guide cover (73) is arranged at one end of the first air guide cover (71) and the second air guide cover (72); the tops of the first air guide cover (71) and the second air guide cover (72) are connected to the third heat conducting portion (43); A portion of the third heating component (3) is arranged between the first air guide cover (71) and the second air guide cover (72), and another portion of the third heating component (3) is arranged at the bottom of the third air guide cover (73); The airflow blown out by the active heat sink (51) passes through the first air guide cover (71), the second air guide cover (72), the space enclosed by the third heat conduction part (43), and the third air guide cover (73) in sequence before being blown out.

8. The heat dissipation structure of the energy storage inverter according to claim 7, characterized in that: The air inlet ends of the first air guide cover (71) and the second air guide cover (72) extend outward, and the air outlet ends of the first air guide cover (71) and the second air guide cover (72) extend inward; The air inlet end of the third air guide cover (73) extends outwards to gather the air volume inwards.

9. The heat dissipation structure of the energy storage inverter according to claim 3, characterized in that: The passive heat sink (52) is a heat sink fin, and the active heat sink (51) includes at least one fan.

10. A heat dissipation method for a heat dissipation structure of an energy storage inverter, characterized in that: The method implements the heat dissipation structure of the energy storage inverter according to any one of claims 1 to 9, comprising: The heat-conducting component (4) guides the heat generated by the first heat-generating component (1) and the second heat-generating component (2) to the heat-dissipating component (5); The heat dissipation component (5) blows out the heat generated by the first heat-generating component (1) and the second heat-generating component (2) as well as the heat of the third heat-generating component (3), so as to dissipate heat for the first heat-generating component (1), the second heat-generating component (2) and the third heat-generating component (3).

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