Heat dissipation box body and PCS system

Abstract

The utility model provides a heat radiation box body and a PCS system. The heat radiation box body comprises a housing and an air supply assembly. A containing cavity is formed in the shell, the shell is provided with liquid cooling channels, the liquid cooling channels comprise the first channel and the second channel, the first channel is arranged on the inner circumference of the shell, and the second channel is communicated with the first channel and protrudes towards the containing cavity. The air supply assembly is arranged in the containing cavity and is configured to be capable of driving the air flow and enabling the air flow to exchange heat with the cooling liquid in the second channel so as to dissipate heat of the containing cavity. According to the heat dissipation scheme of the utility model, the air supply assembly is arranged in the shell, and the air supply assembly also utilizes the liquid cooling channel of the shell, so that the air supply assembly does not need to be additionally provided with a pipeline for connection. Therefore, the heat dissipation box body can be compatible with liquid cooling and air cooling heat dissipation, pipeline connection is reduced, and the risk of leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat dissipation box and PCS system. Background Technology

[0002] A power conversion system (PCS) is primarily used to convert direct current (DC) to alternating current (AC), or vice versa. Most string PCS systems rely on air cooling for heat dissipation. Liquid cooling presents several challenges, requiring the simultaneous cooling of high-power components such as IGBTs (Insulated Gate Bipolar Transistors) and inductors, as well as lower-power components like capacitors. Furthermore, due to the large size of PCS, creating 3D cooling channels in a mold to cool all components is impractical, as cost and weight do not meet current PCS design requirements. However, with increasing protection requirements, liquid cooling is the current trend for PCS heat dissipation. Connecting air-cooled components in series with liquid-cooled components for simultaneous liquid and air cooling requires additional piping connections at the air-cooled components, which carries a risk of leakage. Current PCS heat dissipation technologies rely on a single method, failing to address the diverse cooling needs of multiple components and prone to leakage issues. Utility Model Content

[0003] The main purpose of this invention is to propose a heat dissipation enclosure and PCS system that can reduce pipe connections and lower the risk of leakage while being compatible with both liquid cooling and air cooling.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] A heat sink enclosure for a PCS system, the heat sink enclosure comprising:

[0006] The housing forms a receiving cavity. The housing is provided with a liquid cooling channel, which includes a first channel and a second channel. The first channel is located on the inner periphery of the housing, and the second channel communicates with the first channel and protrudes toward the receiving cavity.

[0007] An air supply assembly, located in the receiving cavity, is configured to drive airflow and cause heat exchange between the airflow and the coolant in the second channel to dissipate heat from the receiving cavity.

[0008] In some embodiments, the first channel includes an inflow end, an outflow end, and an inflow opening and an outflow opening communicating with the outside. Coolant can flow sequentially through the inflow opening, the inflow end, the outflow end, and the outflow opening. The inflow end and the outflow end are both located on the same side of the housing and are arranged opposite to each other along a first direction. Along a second direction perpendicular to the first direction, the inflow end is sequentially connected to the inflow opening and the outflow end. Along the opposite direction of the second direction, the outflow end is sequentially connected to the inflow end and the outflow opening.

[0009] In some embodiments, one end of the second channel is connected to the inflow end and the other end is connected to the outflow end.

[0010] In some embodiments, the air supply assembly includes a first air supply member and a second air supply member, wherein the air inlet end of the first air supply member is oriented in the second direction, and the air inlet end of the second air supply member is oriented in the opposite direction to the second direction.

[0011] In some embodiments, the second channel is connected to one side of the first channel along a third direction, which is perpendicular to the first direction and the second direction. When viewed along the third direction, the first air supply member at least partially overlaps with the inflow end, and the second air supply member at least partially overlaps with the outflow end.

[0012] In some embodiments, the first channel and the second channel are integrally connected.

[0013] In some embodiments, the heat sink further includes a mounting base connected to the inner periphery of the housing, and the second channel and the air supply assembly are both connected to the mounting base.

[0014] In some embodiments, the second channel includes a heat dissipation coil with its wall facing the air supply assembly.

[0015] A second aspect of the present invention also provides a PCS system, including a heat dissipation box and a heat-generating element as described in any of the above embodiments, wherein the heat-generating element is accommodated in the accommodating cavity;

[0016] In some embodiments, the heating element includes an upper element and a lower element arranged on top of each other, the lower element being connected to the side of the housing having the first channel and located below the upper element, and the air supply assembly facing the upper element.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The heat dissipation enclosure of this utility model includes a shell and an air supply assembly. The shell forms a receiving cavity and is provided with a liquid cooling channel. After coolant is introduced into the first channel and the second channel, the second channel is located within the receiving cavity. The liquid cooling channel includes the first channel and the second channel. The first channel is located on the inner circumference of the shell, and the second channel connects to the first channel and protrudes towards the receiving cavity. The air supply assembly can utilize the coolant flowing inside the second channel to generate heat exchange between the airflow and the coolant in the second channel, thereby dissipating heat from the receiving cavity. Compared to related technologies, which use a liquid cooling assembly inside the enclosure and an air cooling assembly outside the enclosure, with the air cooling assembly connected in series with the liquid cooling pipes of the liquid cooling assembly, the heat dissipation scheme of this utility model places the air supply assembly inside the shell, and the air supply assembly also utilizes the liquid cooling channel of the shell, eliminating the need for additional piping connections for the air supply assembly. Therefore, the heat dissipation enclosure of this utility model can be compatible with both liquid cooling and air cooling while reducing piping connections and lowering the risk of leakage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the heat dissipation box provided in the first embodiment of the present utility model;

[0021] Figure 2 This is a perspective view of the PCS system provided in the first embodiment of the present invention; wherein, part of the shell has been removed.

[0022] Figure 3 This is a three-dimensional schematic diagram of the heat dissipation box provided in the second embodiment of the present invention; wherein, part of the shell has been removed, and the flow direction of the coolant in the liquid cooling channel is indicated by arrows;

[0023] Figure 4 This is a three-dimensional schematic diagram of the first channel provided in the second embodiment of the present invention; wherein the internal structure is shown in dashed lines;

[0024] Figure 5 This is a three-dimensional schematic diagram of the first channel provided in the third embodiment of the present invention; wherein the internal structure is shown in dashed lines;

[0025] Figure 6 This is a top view of the first channel and the air supply component combined in the third embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] Heat dissipation enclosure 100;

[0028] Housing 110; Receiving cavity 111; Liquid cooling channel 112; First channel 1121; Inflow end 11211; Outflow end 11212; Inflow opening 11213; Outflow opening 11214; Second channel 1122;

[0029] Air supply assembly 120; first air supply component 121; second air supply component 122;

[0030] Mounting bracket 130;

[0031] PCS system 200;

[0032] Heating element 210; upper element 211; lower element 212;

[0033] First direction X;

[0034] Second direction Y;

[0035] The third direction, Z.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0040] A power conversion system (PCS) is primarily used to convert direct current (DC) to alternating current (AC), or vice versa. Most string PCS systems rely on air cooling for heat dissipation. Liquid cooling presents several challenges, requiring the simultaneous cooling of high-power components like IGBTs and inductors, as well as lower-power components such as capacitors. Furthermore, due to the large size of PCS, creating 3D cooling channels in a mold to cool all components is impractical, as cost and weight do not meet current PCS design requirements. However, with increasing protection levels, liquid cooling is the current trend in PCS heat dissipation. Therefore, current PCS heat dissipation technologies rely on a single method and cannot adequately address the diverse cooling needs of multiple components.

[0041] The applicant initially considered installing a liquid cooling component inside the enclosure and an air-cooling component outside, with the air-cooling component connected in series with the liquid cooling pipes of the liquid cooling component, thus simultaneously performing liquid cooling and air cooling. However, this setup requires additional piping connections at the air-cooling component, which poses a risk of liquid leakage and results in poor reliability under long-term operation in high-temperature environments.

[0042] In view of this, see Figures 1-6 This utility model provides a heat dissipation enclosure 100 for a PCS system 200. The heat dissipation enclosure 100 is a housing structure provided in the PCS system 200. Specifically, the heat dissipation enclosure 100 can be a PCS enclosure, which can house various components used for power conversion (AC / DC converters, inverters, rectifiers, control units, etc.), battery management systems, protection and monitoring equipment, communication interfaces, etc. The heat dissipation enclosure 100 is suitable for housing various electronic components, therefore, the interior of the heat dissipation enclosure 100 has high heat dissipation requirements.

[0043] The heat sink 100 includes a housing 110 and an air supply assembly 120. See also Figures 1-3 The shell 110 can have any suitable structural shape, in Figure 1 In the illustrated embodiment, the housing 110 is rectangular. The housing 110 forms a receiving cavity 111, which is the inner cavity of the housing 110 itself. The housing 110 is provided with a liquid cooling channel 112, which is adapted to generate heat exchange with the surrounding environment after coolant is introduced, thereby producing a heat dissipation effect on the surrounding environment. Regarding the arrangement of the liquid cooling channel 112, in some embodiments, the liquid cooling channel 112 is part of the housing 110, that is, the housing 110 has a hollow structure, and this hollow structure forms the liquid cooling channel 112; in other embodiments, the housing 110 has a channel groove, and the liquid cooling channel 112 is a pipe structure disposed in the channel groove. In this case, the liquid cooling channel 112 can protrude or be recessed relative to the inner circumference of the housing 110. Furthermore, it should be noted that the liquid cooling channel 112 described above can be configured for only a portion of the liquid cooling channel 112. In other words, only a portion of the liquid cooling channel 112 can be formed by the hollow structure of the housing 110 or disposed within the channel groove.

[0044] Further, see Figures 2-5 The liquid cooling channel 112 includes a first channel 1121 and a second channel 1122. The first channel 1121 is located on the inner periphery of the housing 110, and the second channel 1122 communicates with the first channel 1121 and protrudes toward the receiving cavity 111. It can be understood that the first channel 1121 is located on the inner periphery of the housing 110, that is, the first channel 1121 can be formed by the hollow structure of the housing 110 or located in a channel groove, while the second channel 1122 can protrude into the housing 110, so that the second channel 1122 can be located in the receiving cavity 111.

[0045] See Figure 2 or Figure 3The air supply assembly 120 is configured to drive airflow; therefore, the air supply assembly 120 can specifically be a blowing or suction fan. The air supply assembly 120 enables heat exchange between the airflow and the coolant in the second channel 1122 to dissipate heat from the receiving cavity 111. This heat dissipation effect can specifically be on the space of the receiving cavity 111 or on the components disposed within the receiving cavity 111. In other words, after coolant is introduced into the first channel 1121 and the second channel 1122, since the second channel 1122 is located in the receiving cavity 111, the air supply assembly 120 can utilize the coolant flowing inside the second channel 1122 to dissipate heat from the receiving cavity 111. Specifically, regarding the heat dissipation function of the air supply assembly 120, in some embodiments, one of the air inlet end (the side of the air supply assembly 120 that receives airflow) and the air outlet end (the side of the air supply assembly 120 that discharges airflow) of the air supply assembly 120 faces toward the component (hereinafter referred to as the heat-generating component 210) disposed in the receiving cavity 111 and requiring heat dissipation, or faces toward any part of the space in the receiving cavity 111, and the other faces toward the second channel 1122. Thus, the air supply assembly 120 can enable the airflow to exchange heat with the coolant in the second channel 1122 and generate a heat dissipation effect.

[0046] As can be seen, the heat dissipation housing 100 of this utility model includes a shell 110 and an air supply assembly 120. The shell 110 forms a receiving cavity 111 and is provided with a liquid cooling channel 112. After coolant is introduced into the first channel 1121 and the second channel 1122, since the second channel 1122 is located in the receiving cavity 111, the liquid cooling channel 112 includes the first channel 1121 and the second channel 1122. The first channel 1121 is located on the inner periphery of the shell 110, and the second channel 1122 connects to the first channel 1121 and protrudes towards the receiving cavity 111. The air supply assembly 120 can utilize the coolant flowing inside the second channel 1122 to generate heat exchange between the airflow and the coolant in the second channel 1122, thereby dissipating heat from the receiving cavity 111. Compared to related technologies that use a liquid cooling component inside the enclosure and an air cooling component outside, with the air cooling component connected in series with the liquid cooling pipes of the liquid cooling component, the heat dissipation solution of this utility model places the air supply component 120 inside the housing 110, and the air supply component 120 also utilizes the liquid cooling channel 112 of the housing 110, eliminating the need for additional piping connections for the air supply component 120. Therefore, the heat dissipation enclosure 100 of this utility model can accommodate both liquid cooling and air cooling while reducing piping connections and lowering the risk of leakage.

[0047] For the specific layout of liquid cooling channel 112, please refer to... Figure 4 or Figure 5In some embodiments, the first channel 1121 includes an inflow end 11211, an outflow end 11212, and an inflow opening 11213 and an outflow opening 11214 communicating with the outside. The inflow end 11211 and the outflow end 11212 are the two main sections of the first channel 1121 that are interconnected. The inflow opening 11213 is the opening of the inflow end 11211 for communicating with the outside, and the outflow opening 11214 is the opening of the outflow end 11212 for communicating with the outside. Thus, the coolant can flow sequentially through the inflow opening 11213, the inflow end 11211, the outflow end 11212, and the outflow opening 11214, thereby forming a circulating flow of coolant inside the housing 110. Regarding the flow direction, in some embodiments, the inflow end 11211 and the outflow end 11212 are both located on the same side of the housing 110 and arranged opposite each other along the first direction X. Along the second direction Y, perpendicular to the first direction X, the inflow end 11211 is sequentially connected to the inflow opening 11213 and the outflow end 11212. In the opposite direction of the second direction Y, the outflow end 11212 is sequentially connected to the inflow end 11211 and the outflow opening 11214. It is understood that since the inflow end 11211 and the outflow end 11212 are both located on the sidewall of the same side of the housing 110, and the coolant flows reciprocally along the second direction Y within the first channel 1121, this is beneficial for improving heat dissipation efficiency. See also... Figure 4 or Figure 5 At the junction of the outflow ends 11212 and 11214, the coolant can flow in an arc-shaped trajectory. The inflow opening 11213 and the outflow opening 11214 can be located on the same side of the housing 110. In this case, the flow trajectory of the coolant in the first channel 1121 is U-shaped. When the housing 110 has a rectangular structure, the first direction X can correspond to the width direction of the sidewall (parallel to the short side of the sidewall), and the second direction Y can correspond to the length direction of the sidewall (parallel to the long side of the sidewall). Since the main flow direction of the coolant is the second direction Y and its opposite direction, having the second direction Y as the length direction of the sidewall can make the flow path of the coolant longer and the heat dissipation effect better. Depending on the requirements, in some embodiments, the first direction X can correspond to the length direction of the sidewall, and the second direction Y can correspond to the width direction of the sidewall. In addition, in some embodiments, the inflow end 11211 can include multiple channels extending along the second direction Y, and the outflow end 11212 can also include multiple channels extending along the second direction Y.

[0048] It should be noted that the "outside" described in this utility model refers to the external environment and is not limited to the outdoors. Taking the configuration of the inflow opening 11213 connecting to the outside as an example, this limitation means that the inflow opening 11213 connects to the outside of the housing 110, and it can be a direct connection (i.e., the inflow opening 11213 faces directly to the outside) or an indirect connection (for example, the inflow opening 11213 is connected to an external pipe located outside the housing 110, and the external pipe further connects to the outside).

[0049] Based on the first channel 1121 configured in the above embodiment, see [link / reference] Figure 2 or Figure 3 In some embodiments, one end of the second channel 1122 is connected to the inlet end 11211, and the other end is connected to the outlet end 11212. This arrangement allows a portion of the coolant to be diverted into the second channel 1122 during the flow of coolant along the second direction Y within the inlet end 11211. This portion of coolant flows through the second channel 1122 to the outlet end 11212, thus connecting the second channel 1122 in parallel with the first channel 1121. Since the two ends of the second channel 1122 are connected to the inlet end 11211 and the outlet end 11212 respectively, the coolant flowing through the second channel 1122 can quickly complete its circulation within the housing 110, reducing the impact on the heat dissipation effect of the first channel 1121 after the coolant flows back into the first channel 1121. Depending on the requirements, the two ends of the second channel 1122 can be connected to the inlet end 11211 and the outlet end 11212 at any location. For example, see [link to example]. Figure 2 or Figure 3 In some embodiments, the second channel 1122 has an overall arched structure, and the two ends of the second channel 1122 are collinearly arranged along the first direction X. In this case, when viewed along the third direction Z, which is perpendicular to the first direction X and the second direction Y, the second channel 1122 extends along the first direction X, and the second channel 1122 can be located in the middle of the housing 110, or on one side near the inflow end 11211 and the outflow end 11212, or away from the side near the inflow end 11211 and the outflow end 11212 along the second direction Y. In other embodiments, the two ends of the second channel 1122 can be arranged obliquely, that is, when viewed along the third direction Z, the second channel 1122 extends obliquely (while the extension direction is located between the first direction X and the second direction Y).

[0050] For the specific arrangement of the air supply assembly 120, please refer to Figure 2 or Figure 3In some embodiments, the air supply assembly 120 includes a first air supply member 121 and a second air supply member 122. The air inlet end of the first air supply member 121 is oriented in the second direction Y, and the air inlet end of the second air supply member 122 is oriented in the opposite direction of the second direction Y. It is understood that both the first air supply member 121 and the second air supply member 122 can be used to drive the airflow. Their specifications and sizes can be the same or different. By setting the first air supply member 121 and the second air supply member 122 with opposite orientations, the airflow can be driven sequentially by the first air supply member 121 and the second air supply member 122 (or sequentially by the second air supply member 122 and the first air supply member 121), forming a circulating airflow within the receiving cavity 111, thereby improving the heat dissipation efficiency of the airflow. In addition, in some embodiments, the air supply assembly 120 may include other air supply components with the same function in addition to the first air supply component 121 and the second air supply component 122. In order to make the driving effect of the airflow more uniform, the number of each air supply component (including the first air supply component 121, the second air supply component 122 and other similar air supply component structures) is even, and the air supply components facing the second direction Y are symmetrically arranged with the air supply components facing the opposite direction of the second direction Y. The symmetry plane can be the middle cutting surface of the receiving cavity 111 along the second direction Y.

[0051] It should be noted that the present invention does not specify the orientation as a specific direction. Taking the orientation of the air inlet end of the first air supply member 121 as the second direction Y as an example, the orientation of the air inlet end of the first air supply member 121 is the direction from the side of the first air supply member 121 that is air inlet to the air inlet. In this case, only one component of this direction needs to be parallel to the second direction Y to satisfy the orientation of the air inlet end as the second direction Y. That is to say, the air inlet of the first air supply member 121 can be oriented towards the upper side away from the liquid cooling channel 112 or towards the lower side close to the liquid cooling channel 112.

[0052] Based on the above-described configuration of the first air supply component 121 and the second air supply component 122, further, see... Figure 6In some embodiments, the second channel 1122 is connected to the first channel 1121 along the third direction Z, which is perpendicular to the first direction X and the second direction Y. Viewed along the third direction Z, the first air supply element 121 at least partially overlaps with the inflow end 11211, and the second air supply element 122 at least partially overlaps with the outflow end 11212. Taking the first air supply element 121 as an example, it can be understood that through the above arrangement, the first air supply element 121 can be positioned close to the location where the coolant flows at the inflow end 11211, thereby allowing the heat dissipation effect of the first air supply element 121 to further utilize the heat dissipation effect generated around the inflow end 11211. The effect produced by the arrangement of the second air supply element 122 is similar. Furthermore, the first air supply member 121 and the inflow end 11211 are at least partially overlapped, and the second air supply member 122 and the outflow end 11212 are at least partially overlapped. Specifically, this can be defined to the position of the opening, that is, along the third direction Z, the projection of the shape enclosed by the air inlet or air supply port is at least partially overlapped with the projection of the inflow end 11211, and the same applies to the second air supply member 122.

[0053] To reduce leakage within the housing 110, in some embodiments, the first channel 1121 and the second channel 1122 are integrally connected. This integral connection can be achieved by either molding the first channel 1121 and the second channel 1122 into a single piece, or by molding the first channel 1121 and the second channel 1122 separately and welding them together during manufacturing. This arrangement avoids the need for additional connecting parts between the first channel 1121 and the second channel 1122, reducing the risk of leakage. Depending on requirements, in other embodiments, the first channel 1121 and the second channel 1122 are detachably connected; for example, they can be connected via a valve or a connecting structure (e.g., a bolt assembly).

[0054] See Figure 2 or Figure 3In some embodiments, the heat sink 100 further includes a mounting base 130, which is connected to the inner periphery of the housing 110. The second channel 1122 and the air supply assembly 120 are both connected to the mounting base 130. It is understood that the mounting base 130 serves to integrate and connect the second channel 1122 and the air supply assembly 120, reducing the difficulty of assembly. Furthermore, if the air supply assembly 120 includes multiple air supply components (such as the first air supply component 121 and the second air supply component 122 in the aforementioned embodiments), multiple air supply components can be connected to the mounting base 130. Depending on the requirements, in other embodiments, only one of the second channel 1122 and the air supply assembly 120 may be connected to the mounting base 130, while the other may be directly connected to the inner periphery of the housing 110. In addition, there may be multiple mounting bases 130, each of which can be connected to one or more of the second channel 1122 and the air supply assembly 120. Regarding the specific form in which the second channel 1122 is connected to the mounting base 130, in some embodiments, the mounting base 130 has a hollow structure, which forms the second channel 1122, that is, the second channel 1122 is a channel formed by the mounting base 130 itself; in other embodiments, the mounting base 130 and the second channel 1122 are two separate structures, and the two are fixedly connected by a suitable connection means (e.g., bolt connection, welding, etc.).

[0055] For the specific details of the connection between the second channel 1122 and the air supply assembly 120 and the mounting base 130, please refer to [link / reference]. Figure 2In some embodiments, the mounting base 130 includes a plate and two legs. The two legs are respectively connected to both sides of the plate and are both connected to the inner periphery of the housing 110. The plate and the two legs together form an arched structure of the mounting base 130. Both the plate and the legs are hollow structures, so that a second channel 1122 is formed inside both. That is, the second channel 1122 is simultaneously provided inside the plate and the legs. Coolant can flow from the inlet end 11211 sequentially along the third direction Z through one of the legs, along the second direction Y through the plate, and along the reverse direction of the third direction Z into the outlet end 11212. In addition, for the air supply assembly 120, the air supply assembly 120 can be fixedly connected to the plate in any suitable manner, such as by bolt connection, or by setting a support plate on the plate and then placing the air supply assembly 120 on the support plate. To improve the heat dissipation effect between the second channel 1122 and the air supply assembly 120, in some embodiments, the second channel 1122 extends in a serpentine shape towards the air supply assembly 120, making this portion of the second channel 1122 a heat dissipation coil with its wall facing the air supply assembly 120. In other words, when viewed along the direction from the air supply assembly 120 towards the second channel 1122 (the air intake or air supply direction of the air supply assembly 120), at least a portion of the second channel 1122 exhibits a zigzag, reciprocating curve. This arrangement increases the area of ​​the second channel 1122 facing the air supply assembly 120, thereby improving the heat dissipation efficiency of the air supply assembly 120. Furthermore, in some embodiments, the plate can have a perforated structure, allowing the air intake or exhaust port of the air supply assembly 120 to directly face the perforated structure of the plate, meaning the projection of the air intake or exhaust port at least partially overlaps with the projection of the plate. This arrangement further enhances the heat dissipation effect of the second channel 1122 on the air supply assembly 120. To further improve heat dissipation efficiency, cooling fins may be provided on the side of the second channel 1122 facing the air supply assembly 120.

[0056] See Figure 2 The second aspect of this utility model also provides a PCS system 200. The PCS system 200 includes a heat dissipation housing 100 and a heat-generating component 210, as described in any of the above embodiments. The heat-generating component 210 is a component located within the receiving cavity 111 that requires heat dissipation. For example, the heat-generating component 210 can be various components used for power conversion (AC / DC converters, inverters, rectifiers, control units, etc.), battery management systems, protection and monitoring equipment, communication interfaces, etc.

[0057] For the arrangement of the heating element 210, see [reference needed]. Figure 2In some embodiments, the heating element 210 includes an upper element 211 and a lower element 212 stacked on top of each other. The lower element 212 is connected to the side of the housing 110 where the first channel 1121 is provided, and is located below the upper element 211 (the upper element 211 may be connected to the upper side of the lower element 212, or it may not be connected, so that the upper element 211 and the lower element 212 are arranged at intervals relative to each other). The air supply assembly 120 faces the upper element 211. It can be understood that, through the above-described arrangement, the lower element 212 can be mainly cooled by the first channel 1121, and the upper element 211 can be mainly cooled by the combined action of the second channel 1122 and the air supply assembly 120. The specific types of the upper-layer component 211 and the lower-layer component 212 can be selected according to requirements. Furthermore, through the above-described arrangement, even when the upper-layer component 211 must be placed above the lower-layer component 212 due to limitations in its installation method or space arrangement, the heat dissipation effect for the upper-layer component 211 can still be ensured through the second channel 1122 and the air supply assembly 120. Depending on the requirements, the lower-layer component 212 can be an IGBT or an inductor, and can be cooled by using thermal grease or adhesive on the side of the housing 110 with the first channel 1121.

[0058] Furthermore, the aforementioned air supply component 120 is oriented toward the upper element 211, specifically defined to the position of the opening, that is, along the opening direction of the air inlet or air supply port of the air supply component 120, the projection of the pattern enclosed by the air inlet or air supply port at least partially overlaps with the projection of the upper element 211.

[0059] In addition, the PCS system 200 may also include an energy storage box for storing electrical energy, a control unit, etc. The PCS system 200 may also include an outer casing, which accommodates other components, so that the PCS system 200 forms an integrated box-shaped structure.

[0060] Thanks to the improvements made to the heat dissipation enclosure 100 in the above embodiments, the PCS system 200 of the second aspect of this utility model has the same technical effects as the heat dissipation enclosure 100 in the above embodiments. Further details will not be provided here.

[0061] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the application concept of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A heat dissipation enclosure for a PCS system, characterized in that, The heat dissipation enclosure includes: The housing forms a receiving cavity. The housing is provided with a liquid cooling channel, which includes a first channel and a second channel. The first channel is located on the inner periphery of the housing, and the second channel communicates with the first channel and protrudes toward the receiving cavity. An air supply assembly, located in the receiving cavity, is configured to drive airflow and cause heat exchange between the airflow and the coolant in the second channel to dissipate heat from the receiving cavity.

2. The heat dissipation housing according to claim 1, characterized in that, The first channel includes an inflow end, an outflow end, and an inflow opening and an outflow opening that connect to the outside. Coolant can flow sequentially through the inflow opening, the inflow end, the outflow end, and the outflow opening. The inflow end and the outflow end are both located on the same side of the housing and are arranged opposite to each other along a first direction. Along a second direction perpendicular to the first direction, the inflow end is sequentially connected to the inflow opening and the outflow end. Along the opposite direction of the second direction, the outflow end is sequentially connected to the inflow end and the outflow opening.

3. The heat dissipation housing according to claim 2, characterized in that, One end of the second channel is connected to the inflow end, and the other end is connected to the outflow end.

4. The heat dissipation housing according to claim 2, characterized in that, The air supply assembly includes a first air supply component and a second air supply component, wherein the air inlet end of the first air supply component is oriented in the second direction, and the air inlet end of the second air supply component is oriented in the opposite direction to the second direction.

5. The heat dissipation housing according to claim 4, characterized in that, The second channel is connected to one side of the first channel along a third direction, which is perpendicular to the first direction and the second direction. When viewed along the third direction, the first air supply component at least partially overlaps with the inflow end, and the second air supply component at least partially overlaps with the outflow end.

6. The heat dissipation housing according to claim 1, characterized in that, The first channel and the second channel are connected as a single unit.

7. The heat dissipation housing according to claim 1, characterized in that, The heat dissipation enclosure also includes a mounting base connected to the inner periphery of the housing, and the second channel and the air supply assembly are both connected to the mounting base.

8. The heat dissipation housing according to claim 1, characterized in that, The second channel includes a heat dissipation coil, the wall of which faces the air supply assembly.

9. The PCS system, characterized in that, include: The heat dissipation housing according to any one of claims 1-8; The heating element is housed in the receiving cavity.

10. The PCS system according to claim 9, characterized in that, The heating element includes an upper element and a lower element arranged on top of each other. The lower element is connected to the side of the housing that has the first channel and is located below the upper element. The air supply assembly faces the upper element.

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