Heat dissipation system and energy storage equipment

Abstract

The utility model discloses a heat dissipation system and energy storage equipment, and belongs to the technical field of heat dissipation. The heat dissipation system comprises a case, a condenser, an evaporator and a conveying pipe. A sealing cavity for containing a heating element is formed in the machine box, and a through hole is formed in the box wall of the machine box. And the condenser is arranged outside the case. The evaporator is arranged in the sealed cavity. The conveying pipe penetrates through the through hole and is in sealed connection with the through hole. The evaporator is communicated with the condenser through at least one conveying pipe. The conveying pipe is used for conveying a cooling medium. When the heat dissipation system is used for dissipating heat of the heating element in the sealed cavity, due to the fact that the condenser is arranged outside the machine box through the conveying pipe, the space occupancy rate can be reduced, the heat dissipation efficiency is higher, and the heat radiation influence of the condenser on the evaporator in the heat exchange process can be reduced.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology, and more specifically, to a heat dissipation system and an energy storage device. Background Technology

[0002] In energy storage devices, heat-generating components such as batteries typically need to be housed within a sealed enclosure to prevent moisture from the external environment from entering and affecting the batteries' normal operation. During operation, these components generate heat, requiring heat dissipation. Generally, to prevent moisture from the atmosphere from affecting these components, heat sinks are placed within the sealed enclosure of the device.

[0003] Furthermore, with the development of technology, the requirements for power supply capacity and lightweight overall structure of energy storage devices are becoming increasingly higher, which in turn places higher demands on the heat dissipation efficiency and space utilization of radiators. Utility Model Content

[0004] In view of the above-mentioned shortcomings, this application provides a heat dissipation system and an energy storage device to improve the problems of low heat dissipation efficiency and high space occupancy in related technologies.

[0005] This application is implemented as follows:

[0006] In a first aspect, an example of this application provides a heat dissipation system including a chassis, a condenser, an evaporator, and a delivery pipe. The chassis has an interior sealed chamber for housing a heat-generating element, and the chassis wall has through-holes. The condenser is disposed outside the chassis, and the evaporator is disposed within the sealed chamber. The delivery pipe passes through the through-holes and is sealed to the through-holes. The evaporator is in communication with the condenser via at least one delivery pipe. The delivery pipe is used to deliver a cooling medium.

[0007] In energy storage devices, the heating element needs to be sealed within a sealed chamber of the enclosure to prevent moisture and other external contaminants from affecting it. In this embodiment, a delivery pipe connects the condenser and evaporator, creating a vacuum channel for phase change conduction of the cooling medium. This allows the liquid working fluid in the evaporator to absorb heat generated by the heating element and convert it into a gaseous state. The gaseous fluid then flows through the delivery pipe to the condenser for condensation, reverting to a liquid state. This liquid fluid then flows back to the evaporator, creating a continuous cycle that efficiently dissipates heat from the heating element. Connecting the condenser and evaporator with the delivery pipe also allows for a separate arrangement (the condenser and evaporator are not directly connected), enabling the evaporator to be placed inside the enclosure and the condenser outside. Because the enclosure wall has through-holes through which the delivery pipe passes and is sealed, even with the condenser external to the enclosure, the airtightness of the enclosure's sealed chamber is maintained, reducing the impact of moisture and other contaminants on the heating element.

[0008] Placing the condenser outside the chassis has several advantages. First, it avoids taking up internal chassis space, allowing the sealed chamber to be used to house heat-generating components and reducing the space occupied by the cooling system. Second, with the condenser dissipating heat outside the chassis, the hot air generated by the condenser will not generate heat radiation to the heat-generating components and evaporator inside the sealed chamber, thus improving the heat dissipation efficiency of the heat-generating components. Third, being outside the chassis allows the condenser to directly exchange heat with the atmosphere, resulting in even higher heat dissipation efficiency and further enhancing the cooling system's overall performance.

[0009] In conjunction with the first aspect, in one alternative embodiment, the cooling system further includes a fan. The fan is located outside the chassis and is used to dissipate heat from the condenser.

[0010] In the above implementation process, using a fan to dissipate heat from the condenser can improve the heat exchange efficiency of the gaseous working fluid at the condenser, further enhancing the heat dissipation efficiency of the cooling system. Furthermore, since the fan is located outside the chassis, it avoids occupying internal space, allowing the sealed chamber of the chassis to be used to maximize the installation of heat-generating components and reducing the space occupancy rate of the cooling system.

[0011] In conjunction with the first aspect, in one alternative embodiment, the condenser has a first side near the casing wall and a second side away from the casing wall. The fan has an intake surface and an exhaust surface disposed opposite to each other. The exhaust surface of the fan faces the first side. Alternatively, the intake surface of the fan faces the second side.

[0012] In the above implementation process, the air intake surface of the fan is set on the side of the condenser away from the casing wall. When the fan dissipates heat from the condenser, it can draw in air from the environment, so that the air forms a cold airflow that flows through the condenser and exchanges heat with the condenser. The hot air after heat exchange is discharged from the exhaust surface away from the casing wall, which can reduce the heat radiation impact of hot air on the casing wall, thereby reducing the heat radiation impact on the heating elements and evaporator in the sealed cavity and improving heat dissipation efficiency.

[0013] With the exhaust fan facing the first side of the condenser, the fan can draw in air to form cold air while dissipating heat from the condenser. This cold air is then blown out from the exhaust fan towards the condenser away from the casing wall, thus achieving heat dissipation from the condenser. Furthermore, the hot air generated after heat exchange flows away from the casing wall, which reduces the impact of heat radiation on the casing wall and, consequently, the impact of heat radiation on the heating elements and evaporator inside the sealed chamber, thereby improving heat dissipation efficiency.

[0014] In conjunction with the first aspect, in one optional embodiment, the condenser includes a main channel and a plurality of branch channels communicating with the main channel, a delivery pipe communicating with the main channel, and a first gap forming between the outer walls of two adjacent branch channels. The first gap extends through the condenser in a direction from a first side to a second side.

[0015] In the above implementation process, the delivery pipe is connected to the main flow channel of the condenser, and multiple branch channels are set at the main flow channel. This allows the gaseous working fluid generated at the evaporator to flow from the delivery pipe into the main flow channel, and then from the main flow channel into the branch channels, utilizing the multiple branch channels to exchange heat with the external environment. The branch channels increase the heat exchange area and improve heat dissipation efficiency. Furthermore, a first gap is formed between the branch channels, allowing cold air to pass through the first gap and exchange heat with the branch channels, improving the phase conversion efficiency of the cooling working fluid and further enhancing heat dissipation efficiency.

[0016] In conjunction with the first aspect, in one optional embodiment, each distribution channel has a plurality of heat dissipation fins on its outer wall, and the plurality of heat dissipation fins are located within a first gap. A second gap is provided between two adjacent heat dissipation fins, and the second gap extends through the channel from the first side to the second side.

[0017] In the above implementation process, multiple spaced heat dissipation fins are provided on the outer wall of each branch channel, which can further increase the heat dissipation area and heat exchange efficiency at the branch channel, and further improve the heat dissipation efficiency.

[0018] In conjunction with the first aspect, in one optional embodiment, the condenser is provided with two main channels, which are connected by a branch channel. Two evaporators are provided corresponding to the two main channels, and each main channel is connected to the corresponding evaporator via at least one delivery pipe.

[0019] In the above implementation process, two evaporators are connected one-to-one at the two main channels of the condenser. The gaseous working fluid generated at each evaporator can flow to the main channel through the corresponding delivery pipe, and then flow from the main channel to the branch channel for heat dissipation, converting into liquid working fluid. The liquid working fluid can flow from the branch channel to the two main channels respectively, and from the two main channels flow into the evaporation chambers of the two evaporators respectively, dissipating heat from the heating elements at the two evaporators.

[0020] In conjunction with the first aspect, in one alternative implementation, the heat dissipation system includes at least two evaporators, each of which is detachably connected to a condenser via a delivery pipe.

[0021] In the above implementation process, multiple evaporators are detachably connected to the condenser via delivery pipes. This allows for simultaneous heat dissipation from multiple evaporators, resulting in more uniform heat dissipation and improved heat dissipation efficiency. Furthermore, the detachable connection between the evaporators and condensers via delivery pipes, employing a separate connection method, allows the condenser to be placed outside the chassis. This enhances the safety protection level of the cooling system, simplifies the internal airflow of the chassis, reduces the chassis size, and minimizes the impact of hot air on the evaporators and heat-generating elements located inside the chassis.

[0022] In conjunction with the first aspect, in one alternative implementation, each evaporator has at least one first interface, each first interface being detachably connected to a delivery pipe.

[0023] In the above implementation process, a first interface is provided at the evaporator to facilitate the disassembly of the evaporator.

[0024] In conjunction with the first aspect, in one alternative embodiment, the conveying pipe is a metal conveying pipe. Alternatively, the conveying pipe is a flexible conveying pipe. Or, the conveying pipe is a straight pipe.

[0025] In the above implementation process, the delivery pipe is set to a metal delivery pipe. Metal delivery pipes have good thermal conductivity. When the gaseous working fluid flows from the metal delivery pipe to the pipe section located outside the chassis, the gaseous working fluid can exchange heat with the air to a certain extent through the metal delivery pipe, which can further accelerate the phase transformation process of the cooling working fluid and further improve the heat dissipation efficiency. Furthermore, setting the delivery pipe to a flexible material allows for more flexible adjustment of the evaporator and condenser's arrangement, better adapting to the heat dissipation requirements of heat-generating elements in different locations. In addition, setting the delivery pipe to a straight pipe reduces flow resistance when transporting the cooling working fluid, thereby further improving heat dissipation efficiency.

[0026] In a second aspect, an example of this application provides an energy storage device including a heating element and a heat dissipation system as provided in the first aspect. The heating element is disposed on an evaporator.

[0027] In the above implementation process, the energy storage device provided in this application embodiment arranges the heating element and evaporator inside the chassis, and the condenser outside the chassis. This allows the sealed chamber of the chassis to be used more extensively for installing the heating element, reducing the space occupancy rate of the heat dissipation system. Furthermore, the condenser in the heat dissipation system performs heat exchange outside the chassis, which not only improves the heat exchange efficiency of the condenser but also reduces the impact of the hot gas generated after heat exchange on the evaporator's thermal radiation, thereby improving the heat dissipation efficiency of the heating element and enhancing the safety and stability of the energy storage device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0029] Figure 1 This is a schematic diagram of the structure of the energy storage device provided in the embodiments of this application;

[0030] Figure 2 This is a schematic diagram of the internal structure of an energy storage device provided in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram showing the connection between the condenser and the evaporator provided in an embodiment of this application;

[0032] Figure 4 This is a schematic diagram of the internal structure of the condenser provided in an embodiment of this application;

[0033] Figure 5 for Figure 4 The intention of magnifying a portion of part A in the middle;

[0034] Figure 6 This is a schematic diagram of a first connection position of the fan provided in an embodiment of this application;

[0035] Figure 7 This is a schematic diagram of a second connection position of the fan provided in an embodiment of this application.

[0036] icon:

[0037] 100 - Energy storage device; 1 - Heat dissipation system; 11 - Chassis; 111 - Sealed chamber; 112 - Chassis wall; 113 - Through hole; 12 - Condenser; 121 - Main flow channel; 122 - Branch flow channel; 123 - Heat dissipation fins; 124 - First side; 125 - Second side; 13 - Evaporator; 131 - First interface; 132 - Charging connector; 14 - Delivery pipe; 15 - Fan; 151 - Suction surface; 152 - Exhaust surface; 2 - Heating element; L1 - First gap; L2 - Second gap. Detailed Implementation

[0038] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0041] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0042] In the description of the embodiments of this application, the technical terms "middle", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner" and other indications of the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0043] Currently, energy storage devices typically require batteries to be sealed within a sealed chamber of a casing to prevent moisture and other external contaminants from entering and affecting their normal operation. Batteries also generate heat during operation, necessitating heat dissipation.

[0044] Therefore, current energy storage devices will have a first evaporator, a first condenser and a first fan installed in the chamber of the container, and a dedicated air duct will be installed in the container.

[0045] The battery is installed in the first evaporator. The heat generated by the battery is transferred to the first evaporator, where the liquid working fluid absorbs the heat and transforms into a gaseous working fluid. This gaseous working fluid then flows to the first condenser. At the first condenser, the gaseous working fluid exchanges heat with the cold air blown out by the first fan, then transforms back into a liquid working fluid. This liquid working fluid then flows back into the first evaporator to absorb the heat generated by the battery. This cycle repeats continuously, achieving heat dissipation for the battery.

[0046] However, the inventors argue that in current energy storage devices, the placement of both the first condenser and the first fan within the enclosure occupies space, resulting in low battery space utilization. To accommodate more batteries, the overall size of the enclosure needs to be increased, leading to a larger energy storage device that fails to meet lightweight requirements. Furthermore, in current energy storage devices, the cold air blown by the first fan exchanges heat with the first condenser, creating hot air. While this hot air can be exhausted through the ductwork in the enclosure, the enclosure is typically made of sheet metal, which has thermal conductivity. When the hot air exits through the ductwork, it heats the sheet metal, inevitably causing heat radiation to the battery, the first evaporator, and the first condenser, further reducing heat dissipation efficiency. Moreover, the complex ductwork within the enclosure increases manufacturing costs.

[0047] Based on this, please combine Figure 1 and Figure 2 (For ease of demonstration, Figure 2 The present application provides an energy storage device 100, which includes a heat dissipation system 1 and a heat dissipation element 2, by removing part of the casing wall of the chassis 11 and part of the housing used to install and fix the heating element 2.

[0048] The heat dissipation system 1 includes a chassis 11, a condenser 12, an evaporator 13, and a delivery pipe 14. The chassis 11 has a sealed chamber 111 inside to house the heating element 2, and the chassis wall 112 has a through hole 113. The condenser 12 is located outside the chassis 11, and the evaporator 13 is located inside the sealed chamber 111. The delivery pipe 14 passes through the through hole 113 and is sealed to it. The evaporator 13 is connected to the condenser 12 via at least one delivery pipe 14. The delivery pipe 14 is used to deliver the cooling medium. The heating element 2 is located at the evaporator 13.

[0049] During operation, the energy storage device 100 provided in this embodiment transfers the heat generated by the heating element 2 within the sealed chamber 111 to the evaporator 13. The liquid working fluid within the evaporator 13 absorbs the heat and converts into a gaseous working fluid. The gaseous working fluid then flows along the conveying pipe 14 to the condenser 12, where it exchanges heat with the cold air in the atmosphere and converts back into a liquid working fluid. The liquid working fluid then flows along the conveying pipe 14 back to the evaporator 13, and this cycle repeats, thus dissipating heat from the heating element 2.

[0050] In the energy storage device 100 provided in this application embodiment, since the condenser 12 is located outside the casing 11, the thermal radiation effect of the hot gas generated at the condenser 12 on the evaporator 13 and the heating element 2 in the sealed chamber 111 can be reduced, thereby improving the heat dissipation efficiency. Furthermore, since the condenser 12 dissipates heat outside the casing 11, it can exchange heat with the air in the external environment, which can further improve the heat dissipation efficiency.

[0051] In this embodiment, the evaporator 13 and the condenser 12 are connected by a conveying pipe 14. The condenser 12 can be arranged separately from the evaporator 13, and the evaporator 13 and the condenser 12 are not directly connected, thus enabling the condenser 12 to be externally mounted. If the conventional technology is used, where the evaporator 13 and the condenser 12 are directly connected, it is often difficult to externalize the condenser 12 while ensuring the sealing performance inside the casing 11.

[0052] In some embodiments, the material of the delivery pipe 14 can be a thermally conductive material. As an example, the material of the delivery pipe 14 can be metal. In this embodiment, a thermally conductive delivery pipe 14 is used to deliver a phase-change cooling medium. When the gaseous medium flows from the delivery pipe 14 to the pipe section located outside the chassis 11, the gaseous medium can exchange heat with the air to a certain extent through the delivery pipe 14, which can further accelerate the phase change process of the cooling medium and further improve the heat dissipation efficiency.

[0053] As an example, the material of the delivery pipe 14 can be copper.

[0054] In some embodiments, the delivery pipe 14 can be configured as a flexible delivery pipe. Using a flexible delivery pipe allows for more flexible adjustment of the evaporator and condenser's arrangement, better adapting to the heat dissipation requirements of heating elements at different locations. As an example, the flexible delivery pipe can be a plastic hose with certain high-temperature resistance properties.

[0055] In some embodiments, the delivery pipe 14 can be configured as a straight pipe. Using a straight pipe to deliver the cooling medium can reduce the flow resistance of the medium, improve the phase transformation efficiency of the cooling medium, and thus further improve the heat dissipation efficiency.

[0056] To further improve the heat dissipation efficiency of the heat-generating element 2 and reduce the space occupancy of the heat dissipation system 1, in some embodiments, please refer to [the relevant documentation]. Figure 3 The heat dissipation system 1 includes at least two evaporators 13. Using two evaporators 13 to dissipate heat from multiple heat-generating elements 2 improves the heat dissipation efficiency of the heat-generating elements 2. Furthermore, compared to installing a large-sized evaporator 13 within the sealed chamber 111, which would occupy more space, this embodiment uses multiple small-sized evaporators 13, further reducing the space occupancy rate of the heat dissipation system 1.

[0057] For example, please refer to Figure 3 The heat dissipation system 1 can be equipped with two evaporators 13.

[0058] In some embodiments, an evaporator 13 can be connected to a condenser 12 via multiple delivery pipes 14. Connecting the condenser 12 and the evaporator 13 via multiple delivery pipes 14 can further accelerate the delivery efficiency of the cooling working fluid and further improve the heat dissipation efficiency.

[0059] As an example, please continue reading Figure 3 An evaporator 13 can be connected to a condenser 12 via five delivery pipes 14.

[0060] Furthermore, in some embodiments, the evaporator 13 is detachably connected to the condenser 12 via the delivery pipe 14, which not only facilitates the maintenance and installation of the heat dissipation system 1, but also allows for more flexible adjustment of the position of the evaporator 13 to adapt to the heat dissipation requirements of different heat-generating elements 2.

[0061] As an example, the evaporator 13 has an evaporation chamber inside; please refer to [link / reference needed]. Figure 3 A first interface 131 communicating with the evaporation chamber is provided on the body wall of the evaporator 13, and a detachable sealed connection with the delivery pipe 14 can be achieved through the first interface 131. As an example, the first interface 131 is provided with an external thread, the delivery pipe 14 is provided with an internal thread, and a sealing ring is fitted on the first interface 131. Therefore, the detachable sealed connection between the evaporator 13 and the condenser 12 can be achieved through the cooperation of the internal and external threads and the sealing ring.

[0062] As an example, to facilitate the connection of multiple delivery pipes 14, multiple first interfaces 131 can be provided at the evaporator 13.

[0063] Furthermore, during the installation and maintenance of the heat dissipation system 1, in order to facilitate the charging of the cooling working fluid, in some embodiments, please continue to refer to... Figure 3 A charging connector 132 communicating with the evaporation chamber can be provided at the evaporator 13. The charging connector 132 can be used to inject cooling working fluid into the evaporator 13 or to extract liquid working fluid from the evaporator 13. Furthermore, before charging liquid working fluid, the evaporation chamber can be evacuated using the charging connector 132.

[0064] This application does not limit the specific type of evaporator 13. In some embodiments, the inner wall of the evaporation chamber of the evaporator 13 near the heating element 2 is provided with a porous capillary structure, which can increase the contact area between the liquid working fluid and the wall of the evaporator 13 and further improve the heat dissipation efficiency.

[0065] This application does not limit the specific location of the condenser 12 outside the chassis 11. In some embodiments, the condenser 12 can be mounted above the top wall of the chassis 11 using a bracket (not shown in the figure). Alternatively, in other embodiments, the condenser 12 can be mounted on the side wall of the chassis 11 using a bracket.

[0066] This application does not limit the specific type of condenser 12. In some embodiments, please refer to... Figure 4 and Figure 5 The condenser 12 includes a main flow channel 121 and multiple branch flow channels 122 connected to the main flow channel 121. A first gap L1 is formed between two adjacent branch flow channels 122. The delivery pipe 14 is connected to the main flow channel 121. The first gap L1 between two adjacent branch flow channels 122 increases the heat exchange area of ​​the condenser, facilitates the flow of cold air into the first gap L1 to exchange heat with the branch flow channels 122, and further improves the heat dissipation efficiency.

[0067] Furthermore, in some embodiments, the condenser 12 includes two main channels 121, which are connected by a plurality of branch channels 122.

[0068] As an example, the condenser 12 includes two vertically arranged plate-shaped main channels 121, which are positioned opposite each other. A plurality of plate-shaped branch channels 122 are spaced apart between the two main channels 121, and both ends of each branch channel 122 are connected to the two main channels 121.

[0069] To further improve the heat exchange efficiency of the condenser 12, in some embodiments, please refer to [the relevant documentation]. Figure 4 and Figure 5 Multiple heat dissipation fins 123 are provided on the outer wall of each distribution channel 122. The heat dissipation fins 123 are located within a first gap L1, and a second gap L2 is formed between adjacent heat dissipation fins 123 to allow air to pass through, thereby improving heat exchange efficiency. For ease of demonstration, Figure 4 The outermost flow channel 122 was removed to expose the heat dissipation fins 123.

[0070] As an example, the heat dissipation fins 123 are metal sheets, with two branch channels 122 connected to both ends of the metal sheets. Multiple metal sheets are spaced apart along the direction from one main channel 121 to another, forming a second gap L2. Furthermore, each metal sheet also has a bent portion connected to the outer wall of the branch channel 122; in two adjacent metal sheets, the two bent portions are respectively connected to the outer walls of the two branch channels 122.

[0071] To further improve the heat exchange efficiency of the condenser 12, in some embodiments, please refer to [the relevant documentation]. Figure 1The heat dissipation system 1 also includes a fan 15. The fan 15 is located outside the chassis 11 and is used to dissipate heat from the condenser 12.

[0072] This application places both the condenser 12 and the fan 15 outside the chassis 11 to avoid occupying the space of the sealed chamber 111, thereby reducing the size of the chassis 11 and thus reducing the space occupancy rate of the heat dissipation system 1.

[0073] This application does not limit the specific type or location of the fan 15. For some possible embodiments, please refer to [link / reference needed]. Figure 6 ( Figure 6 (The curve with arrows indicates the direction of airflow). The condenser 12 has a first side 124 facing the casing wall 112 and a second side 125 facing away from the casing wall 112. The fan 15 has an intake surface 151 and an exhaust surface 152 arranged opposite to each other. The intake surface 151 faces the second side 125, and the exhaust surface 152 faces away from the casing wall 112. When the fan 15 dissipates heat from the condenser 12, it can draw in air from the environment, causing the air to form a cool airflow that passes through the condenser 12, exchange heat with the condenser 12, and discharge the hot air after heat exchange from the exhaust surface 152 facing away from the casing wall 112. This reduces the heat radiation of the hot air to the casing wall 112 and improves the heat dissipation efficiency.

[0074] Alternatively, in some embodiments, please refer to Figure 7 ( Figure 7 (The curve with arrows indicates the direction of airflow). The exhaust surface 152 of the fan 15 faces the first side 124 of the condenser 12. When the fan 15 dissipates heat from the condenser 12, it can draw in air to form cold air, which is then blown out from the exhaust surface 152 toward the first side 124 of the condenser 12. The cold air can pass through the gaps in the distribution channel 122 and exchange heat with the distribution channel 122. After forming hot air, it is discharged from the second side 125 of the condenser 12. This reduces the heat radiation effect of the hot air on the casing wall 112, thereby improving the heat dissipation efficiency.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat dissipation system, characterized in that, include: The chassis has a sealed chamber inside to accommodate the heating element, and the chassis wall is provided with through holes; A condenser, wherein the condenser is disposed outside the chassis; An evaporator is disposed within the sealed chamber; A delivery pipe passes through the through hole and is sealed to the through hole; the evaporator is connected to the condenser through at least one of the delivery pipes; the delivery pipe is used to deliver the cooling medium.

2. The heat dissipation system according to claim 1, characterized in that, The heat dissipation system also includes a fan; the fan is located outside the chassis and is used to dissipate heat from the condenser.

3. The heat dissipation system according to claim 2, characterized in that, The condenser has a first side close to the box wall and a second side away from the box wall; the fan has an air intake surface and an air exhaust surface arranged opposite to each other. The exhaust surface of the fan faces the first side; or the suction surface of the fan faces the second side.

4. The heat dissipation system according to claim 3, characterized in that, The condenser includes a main channel and multiple branch channels connected to the main channel. The delivery pipe is connected to the main channel. A first gap is formed between the outer walls of two adjacent branch channels. The first gap extends from the first side to the second side.

5. The heat dissipation system according to claim 4, characterized in that, Each of the flow channels has multiple heat dissipation fins on its outer wall, and the multiple heat dissipation fins are located within the first gap; there is a second gap between two adjacent heat dissipation fins, and the second gap extends through the first side to the second side.

6. The heat dissipation system according to claim 4 or 5, characterized in that, The condenser is provided with two main channels, which are connected by the branch channel; two evaporators are provided corresponding to the two main channels, and each main channel is connected to the corresponding evaporator through at least one delivery pipe.

7. The heat dissipation system according to claim 1, characterized in that, The heat dissipation system includes at least two evaporators, each of which is detachably connected to the condenser via at least one delivery pipe.

8. The heat dissipation system according to claim 7, characterized in that, Each of the evaporators has at least one first interface, and each first interface is detachably connected to one of the delivery pipes.

9. The heat dissipation system according to claim 1, characterized in that, The conveying pipe is a metal conveying pipe; or the conveying pipe is a flexible conveying pipe; or the conveying pipe is a straight pipe.

10. An energy storage device, characterized in that, It includes a heating element and a heat dissipation system as described in any one of claims 1 to 9; the heating element is disposed on the evaporator.

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