PCS system

Abstract

The utility model provides a PCS system. The PCS system comprises an outer box body, an inner box body, a liquid cooling channel and an air supply assembly. The outer box body forms an inner cavity. The inner box body is arranged in the inner cavity. The liquid cooling channel is arranged in the inner cavity and comprises an inner channel and an outer channel which are communicated with each other, the inner channel is arranged inside the inner box body, and the outer channel is arranged outside the inner box body. The air supply assembly is arranged in the inner cavity, and the air supply assembly is configured to be capable of driving airflow and enable the airflow to exchange heat with the cooling liquid in the outer channel so as to dissipate heat of the inner cavity. According to the heat dissipation scheme, the outer channel serves as an outer pipeline of the inner box body, so that the air supply assembly can exchange heat with the cooling liquid in the outer channel, heat dissipation is carried out, heat dissipation elements are easy to arrange, and the problems that a liquid cooling plate occupies too large space and is limited in design are solved. Therefore, the PCS system is high in heat dissipation efficiency, and the heat dissipation elements are easy to arrange.

Description

TECHNICAL FIELD

[0001] The utility model relates to box heat dissipation technical field, especially a kind of PCS system. BACKGROUND

[0002] Power Conversion System (PCS) is abbreviated as PCS, it is mainly used to convert direct current (DC) into alternating current (AC), or carry out opposite conversion operation.In the design of a kind of, PCS box and energy storage box and other components will be integrated in energy storage container, and PCS box is installed in separate cabin, in order to protect battery system, also increase heat insulation cotton in cabin, PCS box cannot be cooled from outside, for this, in the related art, cooling is carried out by liquid cooling plate in PCS box, but the arrangement of liquid cooling plate is more difficult, limit is greater, and liquid cooling plate cannot carry out higher efficiency convection heat transfer due to small heat dissipation area and limited coverage, leading to higher internal environment temperature, device cannot reach below use temperature, life and reliability cannot be guaranteed. UTILITY MODEL CONTENT

[0003] The main purpose of the utility model is to provide a kind of PCS system, the PCS system is high in heat dissipation efficiency, and heat dissipation element is easy to arrange.

[0004] To achieve the above object, the utility model embodiment adopts the following technical scheme:

[0005] PCS system, comprising:

[0006] Outer box, forms inner cavity;

[0007] Inner box, is located in the inner cavity;

[0008] Liquid cooling channel, is located in the inner cavity, the liquid cooling channel includes inner channel and outer channel, which are communicated with each other, the inner channel is located in the inner part of the inner box, and the outer channel is located outside the inner box;

[0009] Air supply assembly, is located in the inner cavity, the air supply assembly is configured to drive airflow, and heat exchange is generated between airflow and cooling liquid in the outer channel, to dissipate heat from the inner cavity.

[0010] In some embodiments, the outer channel includes main path channel and branch path channel, one end of the main path channel is communicated with the inner channel, the other end is communicated with the outer environment of the outer box, the branch path channel is connected in parallel with the main path channel, and the air supply assembly is configured to heat exchange between airflow and cooling liquid in the branch path channel.

[0011] In some embodiments, the branch path includes heat dissipation coil pipe, and the pipe wall of the heat dissipation coil pipe is directed to the air supply assembly.

[0012] In some embodiments, the PCS system further comprises a three-way valve, one port of which is communicated with the branch channel, and the other two ports of which are respectively communicated with the main channel.

[0013] In some embodiments, the PCS system further comprises a mounting base, and the branch channel and the air feeding assembly are connected to the mounting base.

[0014] In some embodiments, the number of the air feeding assemblies is plural, each of the air feeding assemblies comprises an air inlet end and an air outlet end, wherein the air inlet ends of at least two of the air feeding assemblies are oppositely directed, and the air outlet ends of the at least two of the air feeding assemblies are oppositely directed.

[0015] In some embodiments, the inner tank is an energy storage tank, and the PCS system further comprises a PCS tank, and the air feeding assemblies are directed to the PCS tank.

[0016] In some embodiments, the outer tank comprises a partition plate, the partition plate is arranged in the inner cavity, and the inner tank and the PCS tank are respectively located on two sides of the partition plate.

[0017] In some embodiments, the outer tank further comprises a door plate, the door plate is adapted to close the inner cavity, the door plate and the partition plate are oppositely arranged along a first direction, and the outer channel and the air feeding assembly are at least partially located between the partition plate and the door plate along the first direction.

[0018] In some embodiments, the outer channel comprises a first outer channel and a second outer channel, the liquid cooling channel is configured to enable the cooling liquid to sequentially flow through the first outer channel, the inner channel and the second outer channel, and the air feeding assembly is configured to enable the air flow to exchange heat with the cooling liquid in the first outer channel.

[0019] Compared with the prior art, the PCS system has the following beneficial effects:

[0020] The PCS system of the utility model includes outer box body, inner box body, liquid cooling channel and air supply assembly. The outer box body forms inner cavity, and the inner box body is arranged in the inner cavity. The liquid cooling channel is arranged in the inner cavity, and the liquid cooling channel includes inner channel and outer channel which are communicated with each other, the inner channel is arranged in the inner part of the inner box body, and the outer channel is arranged in the outer part of the inner box body. Therefore, the outer channel can be used as external pipeline to provide cooling liquid for the inner channel and / or discharge the cooling liquid from the inner channel, and the air supply assembly can make the airflow exchange heat with the cooling liquid in the outer channel to dissipate heat. Compared with the scheme of arranging the liquid cooling plate at the position needing heat dissipation in the related art, for example, the liquid cooling plate in the inner part of the PCS box body is used to cool the PCS box body, in the heat dissipation scheme of the utility model, the outer channel is used as the external pipeline of the inner box body, so that the air supply assembly can exchange heat with the cooling liquid in the outer channel to dissipate heat, and the scheme makes the heat dissipation element easy to arrange, and avoids the problems of large space occupied by the liquid cooling plate and limited design. Therefore, the PCS system of the utility model has high heat dissipation efficiency and the heat dissipation element is easy to arrange. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0022] Figure 1 It is the first side three-dimensional schematic view of the PCS system provided in an embodiment of the utility model, wherein part of the outer box body is removed, and the inner box body is indicated by dotted line;

[0023] Figure 2 It is the three-dimensional schematic view of the liquid cooling channel, air supply assembly and mounting seat combination provided in an embodiment of the utility model;

[0024] Figure 3 It is the second side three-dimensional schematic view of the PCS system provided in an embodiment of the utility model, wherein the components in the inner part of the outer box body are shown

[0025] Figure 4 It is the top view schematic view of the PCS system provided in an embodiment of the utility model, wherein the PCS box body and air supply assembly that are shielded are shown by dotted line, and the airflow direction around the PCS box body is shown by arrow.

[0026] EXPLANATION OF DRAWINGS:

[0027] PCS system 100;

[0028] Outer box body 110; inner cavity 111; partition 112; door plate 113;

[0029] Inner box body 120;

[0030] Liquid cooling channel 130; inner channel 131; outer channel 132; main path channel 1321; branch channel 1322;

[0031] Air supply assembly 140;

[0032] Mounting seat 150;

[0033] PCS box 160;

[0034] First direction X.

[0035] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0038] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, if "and / or", "and / or" or "and / or" appear in the whole text, the meaning includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0039] Power Conversion System, PCS for short, is mainly used for converting DC to AC or vice versa. In a type of design, the PCS box and energy storage box are integrated in the energy storage container, and the PCS box is installed in a separate cabin. In order to protect the battery system, heat insulation cotton is added in the cabin, and the PCS box cannot be cooled from the outside. In the related technology, the liquid cooling plate inside the PCS box is used for cooling, but the arrangement of the liquid cooling plate is difficult and limited. In addition, the liquid cooling plate has small heat dissipation area and limited coverage, and cannot perform high-efficiency convection heat exchange, so that the internal environment temperature is high, the device cannot reach below the use temperature, and the service life and reliability cannot be guaranteed.

[0040] In view of this, referring to Figures 1-4 The embodiment of the utility model provides a PCS system 100. The PCS system 100 includes an outer box body 110, an inner box body 120, a liquid cooling channel 130 and a gas sending assembly 140.

[0041] Specifically, the outer box body 110 forms an inner cavity 111, which is the internal cavity of the shell itself. The inner box body 120 is arranged in the inner cavity 111. The outer box body 110 is the outer box body of the PCS system 100, which is used to accommodate the main parts of the PCS system 100. The inner box body 120 is a box structure arranged inside the outer box body 110, and the inner box body 120 is suitable for placing various electronic components. Therefore, the inner box body 120 has high heat dissipation requirements. Specifically, in some embodiments, the inner box body 120 can be an energy storage box, which is internally provided with a battery to store electrical energy. In other embodiments, the inner box body 120 can be a PCS box 160, which is internally provided with various components for electrical energy conversion (AC / DC converter, inverter, rectifier, control unit, etc.), battery management system, protection monitoring device, communication interface, etc. The following embodiments are described with the inner box body 120 as an energy storage box, and the inner cavity 111 is also provided with a PCS box 160.

[0042] Referring to Figures 1-2The liquid cooling channel 130 is arranged in the inner cavity 111 and is adapted to exchange heat with the surrounding environment after being filled with cooling liquid, so as to achieve the heat dissipation effect. The liquid cooling channel 130 comprises an inner channel 131 and an outer channel 132 which are in communication with each other. The inner channel 131 is arranged in the inner cavity of the inner box 120, and the outer channel 132 is arranged outside the inner box 120. It can be understood that, since the inner channel 131 is arranged in the inner cavity of the inner box 120, the inner channel 131 can form a liquid cooling heat dissipation for the inner box 120, and the outer channel 132 is in communication with the inner channel 131 outside the inner box 120, so that the outer channel 132 can be used as an external pipeline to supply cooling liquid to the inner channel 131 and / or discharge the cooling liquid from the inner channel 131. In order to achieve the above functions, the outer channel 132 can be in communication with the outside of the outer box 110, so that the outer channel 132 can obtain cooling liquid, discharge the cooling liquid, or further process the cooling liquid discharged from the inner channel 131. The outer box 110 and the inner box 120 can have any suitable structure, and in the embodiment shown in the drawings, the outer box 110 and the inner box 120 are both rectangular bodies, and the liquid cooling channel 130 can extend along any suitable track. Figure 1 The outer box 110 and the inner box 120 can have any suitable structure, and in the embodiment shown in the drawings, the outer box 110 and the inner box 120 are both rectangular bodies, and the liquid cooling channel 130 can extend along any suitable track.

[0043] As to the arrangement of the inner channel 131, in some embodiments, the inner channel 131 is a part of the inner box 120, that is, the inner box 120 has a hollow structure which forms the inner channel 131; in other embodiments, the inner box 120 has a channel groove, and the inner channel 131 is in the form of a pipeline and is arranged in the channel groove, and in this case, the inner channel 131 can protrude or be recessed relative to the inner wall of the inner box 120. In addition, it should be noted that the above-mentioned arrangement of the inner channel 131 can only correspond to part of the inner channel 131, that is, only part of the inner channel 131 is formed by the hollow structure of the inner box 120 or arranged in the channel groove.

[0044] Referring to Figures 1-2The air supply assembly 140 is configured to drive air flow, and thus the air supply assembly 140 can be a blowing fan or a suction fan. The air supply assembly 140 can cause heat exchange between the air flow and the cooling liquid in the outer passage 132 to dissipate heat from the inner cavity 111, that is, the air supply assembly 140 can dissipate heat from the inner cavity 111 by using the cooling liquid flowing into the outer passage 132. The heat dissipation can be specifically to the space of the containing cavity or to the components (for example, the PCS box 160) arranged in the containing cavity. For the heat dissipation of the air supply assembly 140, specifically, in some embodiments, one of the air inlet end (the side of the air supply assembly 140 from which the air flow is obtained) and the air outlet end (the side of the air supply assembly 140 from which the air flow is discharged) of the air supply assembly 140 is directed to a component (hereinafter referred to as a heat generating component) arranged in the inner cavity 111 and needing to dissipate heat or to any part of the space of the inner cavity 111, and the other is directed to the outer passage 132, so that the air supply assembly 140 can cause heat exchange between the air flow and the cooling liquid in the outer passage 132 to produce a heat dissipation effect.

[0045] It can be seen that the PCS system 100 of the utility model includes an outer box 110, an inner box 120, a liquid cooling passage 130, and an air supply assembly 140. The outer box 110 forms an inner cavity 111, and the inner box 120 is arranged in the inner cavity 111. The liquid cooling passage 130 is arranged in the inner cavity 111, and the liquid cooling passage 130 includes an inner passage 131 and an outer passage 132 that are in communication with each other. The inner passage 131 is arranged inside the inner box 120, and the outer passage 132 is arranged outside the inner box 120. Thus, the outer passage 132 can serve as an external pipeline to provide cooling liquid for the inner passage 131 and / or discharge the cooling liquid from the inner passage 131, and the air supply assembly 140 can cause heat exchange between the air flow and the cooling liquid in the outer passage 132 to dissipate heat from the inner cavity 111. Compared with the related art in which a liquid cooling plate is arranged at a position needing to dissipate heat, for example, a liquid cooling plate inside the PCS box 160 is used to cool the PCS box 160, in the heat dissipation scheme of the utility model, the outer passage 132 serves as an external pipeline of the inner box 120, so that the air supply assembly 140 can cause heat exchange with the cooling liquid in the outer passage 132 to dissipate heat. This scheme makes the heat dissipation element (the outer passage 132, the air supply assembly 140, etc. used for heat dissipation) easy to arrange, and avoids the problem that the liquid cooling plate occupies too much space and is limited in design. Therefore, the PCS system 100 of the utility model has high heat dissipation efficiency and the heat dissipation element is easy to arrange.

[0046] For the specific arrangement form of the outer passage 132, see Figures 1-2In some embodiments, the outer channel 132 includes a first outer channel and a second outer channel, the liquid cooling channel 130 is configured to enable the cooling liquid to flow through the first outer channel, the inner channel 131 and the second outer channel in sequence, and the air feeding assembly 140 is configured to enable the air flow to exchange heat with the cooling liquid in the first outer channel. In other embodiments, the air feeding assembly 140 is configured to enable the air flow to exchange heat with the cooling liquid in the second outer channel. Further, in some embodiments, the outer channel 132 includes a main channel 1321 and a branch channel 1322, one end of the main channel 1321 is connected to the inner channel 131 and the other end of the main channel 1321 is connected to the outside of the outer box 110. It can be understood that the ports of the main channel 1321 connected to the outside include two ports, one of which is connected to the inner channel 131 and the other of which is connected to the outside of the outer box 110, and the extension track of the main channel 1321 can be linear or any other shape. Based on the arrangement of the main channel 1321, in some embodiments, the branch channel 1322 is connected in parallel to the main channel 1321, and the air feeding assembly 140 is configured to enable the air flow to exchange heat with the cooling liquid in the branch channel 1322. Through the arrangement of the main channel 1321 and the branch channel 1322, the main channel 1321 can be mainly responsible for providing and / or discharging the cooling liquid from the inner channel 131, and the branch channel 1322 is connected in parallel to the main channel 1321, so that part of the cooling liquid flowing in the main channel 1321 is diverted into the branch channel 1322, and the part of the cooling liquid is mainly responsible for cooperating with the air feeding assembly 140 to play a heat dissipation role. In other embodiments, the branch channel 1322 can not be connected in parallel to the main channel 1321, i.e., the branch channel 1322 has only one end connected to the main channel 1321 and the other end connected to other parts.

[0047] It should be noted that the outside in the present utility model is the external environment, and is not limited to outdoor. Taking the arrangement of the main channel 1321 connected to the outside of the outer box 110 as an example, the limitation indicates that the opening at one end of the main channel 1321 is connected to the outside of the outer box 110, and can be directly connected (i.e., the opening of the main channel 1321 directly faces the outside) or indirectly connected (e.g., the opening of the main channel 1321 is connected to an external pipeline arranged outside the outer box 110, and the external pipeline is further connected to the outside).

[0048] Further, the main passage 1321 and the branch passage 1322 can be detachably connected. Specifically, in some embodiments, the PCS system 100 further comprises a three-way valve, one port of which is connected to the branch passage 1322, and the other two ports are connected to the main passage 1321. It can be understood that the opposite two ports of the three-way valve are connected to the main passage 1321, i.e., the main passage 1321 is divided into two sections by the three-way valve, and the remaining one port of the three-way valve is connected to the branch passage 1322. The position of the three-way valve connected to the branch passage 1322 can correspond to one end of the branch passage 1322 for obtaining the cooling liquid. At this time, by adjusting the three-way valve, the flow of the cooling liquid from the main passage 1321 into the branch passage 1322 can be conveniently controlled. At the same time, since the outer passage 132 is connected to the upstream of the inner passage 131 relative to the inner tank 120, the cooling liquid flowing through the branch passage 1322 can not flow through the inner passage 131, and the heat dissipation effect of this part of the cooling liquid is better. In other embodiments, the outer passage 132 can be connected to the downstream of the inner passage 131 relative to the inner tank 120. The three-way valve can be a common three-way valve or an electronic three-way valve. In other embodiments, the main passage 1321 and the branch passage 1322 are integrally connected. The specific form of the above-mentioned integral connection can be that the main passage 1321 and the branch passage 1322 are integrally formed, or the main passage 1321 and the branch passage 1322 are respectively formed and welded during the manufacturing process.

[0049] Referring to Figures 1-2 In some embodiments, the PCS system 100 further comprises a mounting seat 150, and the branch passage 1322 and the air supply assembly 140 are connected to the mounting seat 150. It can be understood that the mounting seat 150 plays a role of integrating and connecting the branch passage 1322 and the air supply assembly 140, which can reduce the operation difficulty during assembly and connection. In addition, if the air supply assembly 140 comprises a plurality of air supply members (for example, the air supply assembly 140 comprises a plurality of independent fans), a plurality of air supply members can be connected to the mounting seat 150. According to the needs, in other embodiments, only one of the branch passage 1322 and the air supply assembly 140 can be connected to the mounting seat 150. In addition, the number of the mounting seat 150 can be multiple, and each mounting seat 150 can be connected to one or more of the branch passage 1322 and the air supply assembly 140. For the specific form of the connection of the branch passage 1322 to the mounting seat 150, in some embodiments, the mounting seat 150 is in a hollow structure, and the hollow structure forms the branch passage 1322 (or part of the branch passage 1322), i.e., the branch passage 1322 is a channel formed by the mounting seat 150 itself; in other embodiments, the mounting seat 150 and the branch passage 1322 are two separate structures, and are fixedly connected by a suitable connecting means (such as bolt connection, welding, etc.).

[0050] Based on the foregoing embodiments for the definition of the main path channel 1321 and the branch path channel 1322, see Figure 2 In some embodiments, the branch path channel 1322 extends in a serpentine shape towards one side of the air supply assembly 140, so that the branch path channel 1322 in this part is a heat dissipation coil, and the tube wall of the heat dissipation coil faces the air supply assembly 140. That is, as viewed in the direction of the air supply assembly 140 towards the branch path channel 1322 (the air inlet direction or the air supply direction of the air supply assembly 140), at least part of the branch path channel 1322 extends in a curved line with a bending and reciprocating shape, so that the branch path channel 1322 has a coil structure, and the inlet and outlet of the coil can be connected to the liquid cooling pipe coil through the water nozzle interface respectively. This arrangement can increase the area of the branch path channel 1322 facing the air supply assembly 140, thereby improving the heat dissipation efficiency of the air supply assembly 140. Further, in combination with the arrangement of the mounting seat 150, in some embodiments, the mounting seat 150 can have a plate shape and a hollow structure, so that the air inlet or the air outlet of the air supply assembly 140 can face the hollow structure of the mounting seat 150, that is, the projection of the air inlet or the air outlet and the projection of the mounting seat 150 at least partially overlap, which can further enhance the effect of the branch path channel 1322 on promoting heat dissipation of the air supply assembly 140. In order to further improve the heat dissipation efficiency, the side of the branch path channel 1322 facing the air supply assembly 140 can be provided with cooling fins.

[0051] Referring to Figures 1-2 In some embodiments, the number of air supply assemblies 140 is multiple, and each air supply assembly 140 includes an air inlet end and an air outlet end, wherein the air inlet ends of at least two air supply assemblies 140 face opposite directions, and the air outlet ends face opposite directions. It can be understood that the multiple air supply assemblies 140 can be used to drive air flow, and the specifications and sizes of the two can be the same or different, and by arranging the multiple air supply assemblies 140 to face opposite directions, a circulating air flow can be formed in the inner cavity 111, so that the heat dissipation efficiency of the air flow is higher. In order to make the driving effect of the air flow more uniform, the number of air supply assemblies 140 is even, and the air supply assemblies 140 facing opposite directions are arranged symmetrically, and the symmetry plane can be a middle split surface of the containing cavity along the direction of the air supply assembly 140.

[0052] It should be noted that the direction of the present application is not specified as a specific direction, and the air inlet end of the air supply assembly 140 is taken as an example, the direction of the air inlet end of the air supply assembly 140 is the direction in which the side of the air inlet end of the air supply assembly 140 points to the air inlet, and when the two directions are opposite, as long as the directions of the two are opposite, the directions of the two are opposite.

[0053] Referring to Figures 1-3In some embodiments, the inner box 120 is an energy storage box, and the PCS system 100 further comprises a PCS box 160, and the air feeding assembly 140 is directed towards the PCS box 160. That is, the inner channel 131 is used to dissipate heat for the energy storage box, the outer channel 132 can utilize the cooling liquid used to dissipate heat for the energy storage box to further dissipate heat for the PCS box 160, and the outer channel 132 and the air feeding assembly 140 are both arranged in the PCS box 160 to form external heat dissipation. Compared with the heat dissipation mode of arranging the liquid cooling plate inside the PCS box 160, the external heat dissipation avoids the heat inside the PCS box 160 from affecting the heat dissipation effect, so that the external heat dissipation mode can achieve higher heat dissipation efficiency. According to requirements, a liquid cooling plate can also be arranged in the PCS box 160 to achieve the effect of simultaneous internal and external heat dissipation. In some embodiments, the heat inside (or around) the PCS box 160 is greater than the heat inside (or around) the inner box 120, so directing the air feeding assembly 140 towards the PCS box 160 is more conducive to meeting the heat dissipation requirements of the PCS box 160. The above-mentioned air feeding assembly 140 directed towards the PCS box 160 can be specifically defined as the position of the opening, that is, in the opening direction of the air inlet or air outlet of the air feeding assembly 140, the projection of the figure surrounded by the air inlet or air outlet at least partially overlaps the projection of the PCS box 160

[0054] For other structural arrangements of the outer box 110, see Figure 1 In some embodiments, the outer box 110 comprises a partition plate 112 arranged in the inner cavity 111, and the inner box 120 and the PCS box 160 are respectively located on two sides of the partition plate 112. It can be understood that the partition plate 112 is used to separate the inner box 120 and the PCS box 160, and the separation can be complete separation (i.e., the inner box 120 and the PCS box 160 are located in the inner cavity 111 spaces that are not connected with each other) or partial separation (i.e., the inner box 120 and the PCS box 160 are located in the inner cavity 111 spaces that are still connected with each other). In Figure 1 In the embodiment shown, the inner box 120 and the PCS box 160 are respectively placed on two sides of the partition plate 112 in the vertical direction, and the inner box 120 is located on the upper side of the PCS box 160.

[0055] Further, see Figures 3-4In some embodiments, the outer box 110 further comprises a door plate 113 adapted to close the inner cavity 111, the door plate 113 is arranged opposite to the partition plate 112 along the first direction X, and the outer passage 132 and the air supply assembly 140 are at least partially located between the partition plate 112 and the door plate 113 along the first direction X. It can be understood that the door plate 113 is used to close the opening of the outer box 110 and forms a side wall of the outer box 110, and the first direction X can correspond to the front-back direction perpendicular to the wall surface of the door plate 113. Along the first direction X, a spacing space is formed between the door plate 113 and the partition plate 112, and by arranging the outer passage 132 and the air supply assembly 140 in the spacing space (and other components for heat dissipation of the inner cavity 111, such as a three-way valve, a mounting seat 150, etc. can also be arranged in the spacing space), the heat dissipation can be realized without additional reserved installation space, the space utilization is higher, no additional design is needed, and under the premise that the volume does not need to be changed and the weight occupation is small, the air supply assembly 140 can utilize the heat exchange of the cooling liquid in the outer passage 132 to meet the heat dissipation design requirement; in addition, this arrangement is more convenient for the air flow to form an air flow circulation in the inner cavity 111. Specifically, the air supply assembly can send the air flow to the inner cavity 111 space where the PCS box 160 is located along the first direction X, and the part of the air flow is mainly located on one side of the PCS box 160 along the left-right direction. After reaching the end of the inner cavity 111, the air flow passes through the diversion and then passes through the other side of the PCS box 160 along the left-right direction along the reverse direction of the first direction X and reaches the other air supply assembly facing the opposite direction, so as to form a circulating air flow. In other embodiments, the space below the PCS box 160 can be used to arrange the outer passage 132 and the air supply assembly 140 (which needs to meet the air flow).

[0056] The heat dissipation arrangement of the PCS system 100 as a whole in an embodiment will be introduced below, referring to Figure 1, the outer box body 110 is a container, the inner box body 120 is an energy storage box (battery PACK), the space of the inner cavity 111 where the inner box body 120 is located is a PACK cabin, the space of the inner cavity 111 where the PCS box body 160 is located is a PCS cabin, according to the heat insulation requirement, the partition plate 112 is provided with heat insulation cotton to insulate the heat exchange in the PCS cabin and the PACK cabin. The main road passage 1321 of the outer passage 132 can be used as a cooling pipeline, one end of which is connected with a liquid cooling unit (which can be part of the PCS system 100 or used in cooperation with the PCS system 100), the other end of which is connected with the inner passage 131 and connected to the battery PACK to cool the battery PACK, the main road passage 1321 is branched into a branch passage 1322 through a three-way valve, the branch passage 1322 is connected with a heat dissipation coil pipe, and a fan is used to perform convection heat exchange in the PCS cabin by means of air suction or air blowing, so that the temperature in the cabin is reduced, and the natural heat dissipation intensity of the PCS box body 160 is enhanced, so that the internal ring temperature of the PCS can be effectively reduced, and the temperature of the heat dissipation device is synchronously reduced. After the convection heat exchange, the cooling liquid in the branch passage 1322 is converged back to the main road passage 1321, and the PACK is further cooled, and the inner passage 131 after the heat dissipation effect is connected with another part of the outer passage 132 and finally returns to the liquid cooling unit to form a circulating cooling effect of the cooling liquid. Under the premise that the container is not changed too much, the heat dissipation design difficulty of the PCS box body 160 is reduced, and the heat dissipation requirement of the PCS box body 160 can be effectively met.

[0057] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields based on the application concept of the utility model and the content of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A PCS system characterized by The PCS system comprises: an outer box forming an inner cavity; an inner box arranged in the inner cavity; a liquid cooling channel arranged in the inner cavity, the liquid cooling channel comprising an inner channel and an outer channel, the inner channel being arranged inside the inner box, and the outer channel being arranged outside the inner box; an air supply assembly arranged in the inner cavity, the air supply assembly being configured to drive air flow and exchange heat between the air flow and cooling liquid in the outer channel to dissipate heat from the inner cavity.

2. The PCS system of claim 1, wherein: the outer channel comprises a main channel and a branch channel, one end of the main channel is connected to the inner channel, and the other end of the main channel is connected to the outside of the outer box, the branch channel is connected in parallel to the main channel, and the air supply assembly is configured to exchange heat between the air flow and the cooling liquid in the branch channel.

3. The PCS system of claim 2, wherein: the branch channel comprises a heat dissipation coil pipe, and a pipe wall of the heat dissipation coil pipe faces the air supply assembly.

4. The PCS system of claim 2, wherein: the PCS system further comprises a three-way valve, one port of the three-way valve is connected to the branch channel, and the other two ports of the three-way valve are respectively connected to the main channel.

5. The PCS system of claim 2, wherein: the PCS system further comprises a mounting seat, and the branch channel and the air supply assembly are connected to the mounting seat.

6. The PCS system of claim 1, wherein: the air supply assembly comprises a plurality of air supply assemblies, each of the air supply assemblies comprises an air inlet end and an air outlet end, at least two of the air supply assemblies have the air inlet ends facing opposite directions and the air outlet ends facing opposite directions.

7. The PCS system of claim 1, wherein: the inner box is an energy storage box, the PCS system further comprises a PCS box body, and the air supply assembly faces the PCS box body.

8. The PCS system of claim 7, wherein: the outer box comprises a partition plate arranged in the inner cavity, and the inner box and the PCS box body are respectively located on two sides of the partition plate.

9. The PCS system of claim 8, wherein: the outer box further comprises a door plate adapted to close the inner cavity, the door plate and the partition plate are arranged opposite to each other along a first direction, and the outer channel and the air supply assembly are at least partially located between the partition plate and the door plate along the first direction.

10. The PCS system of claim 1, wherein: the outer channel comprises a first outer channel and a second outer channel, the liquid cooling channel is configured to enable the cooling liquid to sequentially flow through the first outer channel, the inner channel, and the second outer channel, and the air supply assembly is configured to exchange heat between the air flow and the cooling liquid in the first outer channel.

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