Three-dimensional liquid cooling heat dissipation assembly for energy storage battery

Abstract

The utility model discloses a three-dimensional liquid cooling heat dissipation assembly for an energy storage battery, and belongs to the field of battery heat dissipation, the heat dissipation assembly comprises an upper storage layer, an upper heat exchange layer, an attachment heat exchange assembly, a lower heat exchange layer and a lower storage layer from top to bottom, the attached heat exchange assembly divides the interlayer mounting position into a plurality of heat exchange partition positions; the upper heat exchange layer is provided with a first liquid inlet and a first liquid outlet, the upper heat exchange layer is connected and matched with the attached heat exchange assembly, and a first heat exchange runner connected with the first liquid inlet and the second liquid outlet is arranged in the upper heat exchange layer; and the first liquid inlet is connected with a liquid outlet of an external liquid cooling circulating device. According to the liquid cooling heat dissipation assembly, the heat management capability of the energy storage battery can be remarkably improved, the service life of the battery can be prolonged, additional safety guarantee can be provided for a battery system under extreme conditions, and the accident occurrence probability and the loss caused by the accident occurrence probability are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery heat dissipation, and in particular to a three-dimensional liquid cooling heat dissipation component for energy storage batteries. Background Art

[0002] With the widespread adoption of energy storage battery technology in multiple high-growth markets, including power systems, renewable energy, and electric vehicles, effectively managing battery heat has become a critical and pressing challenge. Battery temperature control not only directly impacts performance and efficiency but also plays a crucial role in safety and lifespan. Therefore, when designing and developing energy storage battery systems, effective and uniform heat dissipation, as well as the provision of necessary safety measures in extreme situations, are crucial challenges facing engineers.

[0003] In the prior art, heat dissipation components usually adopt a planar heat exchange method. Specifically, these heat dissipation components mainly achieve heat exchange and transfer by installing a radiator on the bottom or side of the battery. These radiators usually include metal plates or thermal pads attached to the surface of the battery, which remove the heat generated by the battery during operation through the flow of coolant or air. In a typical design, the radiator is in direct contact with the bottom or side of the battery. This contact is usually optimized through thermal interface materials (such as thermal grease) to ensure that as much heat as possible can be transferred from the inside of the battery to the radiator. However, this planar heat exchange method has significant limitations.

[0004] First, due to the limited heat exchange area of the radiator, which typically only covers the bottom or one side of the battery, heat cannot be evenly dissipated across the entire battery surface. Especially when the battery is under high load, such as when an electric vehicle accelerates rapidly or operates in a high-temperature environment, the heat dissipation capacity of the planar heat exchange method often cannot meet the battery's heat dissipation needs, resulting in uneven temperature distribution within the battery and localized overheating. Localized overheating not only affects the battery's operating performance, such as reducing charge and discharge efficiency, but can also accelerate the aging of battery materials and trigger irreversible chemical reactions, thereby shortening the battery's overall service life.

[0005] In addition, existing heat dissipation device designs typically only focus on achieving effective heat dissipation under normal battery operating conditions, without fully considering the safety protection issues of the battery in the thermal runaway state. Thermal runaway is an extreme but potentially fatal condition, usually triggered by a short circuit or other faults inside the battery, leading to a sharp rise in battery temperature. If the heat dissipation system fails to effectively suppress the temperature rise in such a situation, the electrolyte and other flammable materials inside the battery may be ignited, resulting in fire or even explosion. The existing heat dissipation systems lack the fire extinguishing function for such extreme situations. Once a fire breaks out, the fire will spread rapidly, causing a chain reaction, not only damaging the entire battery module, but also endangering the safety of surrounding equipment and personnel, resulting in huge economic losses and serious safety hazards.

[0006] The fundamental reason for these deficiencies is that existing technologies mainly focus on heat transfer and dissipation through limited heat exchange surfaces, without comprehensively considering the overall thermal management requirements of the battery from a global perspective. Existing designs often take simple structure and cost control as the main objectives, ignoring the uniformity of heat distribution inside the battery under different working conditions and the emergency handling ability in abnormal situations. Especially in the application scenarios of multi-unit battery series-parallel connections, due to uneven temperature conduction between multiple battery units, local overheating is likely to trigger thermal runaway of the entire battery pack, resulting in catastrophic consequences.

[0007] Therefore, it is particularly necessary to develop a new type of liquid-cooled heat dissipation component that can achieve three-dimensional heat exchange. Such a heat dissipation component should be able to cover multiple surfaces of the battery and significantly improve the heat dissipation efficiency and uniformity through heat conduction and dissipation in three-dimensional space. Summary of the Utility Model

[0008] The purpose of this application is to at least overcome one deficiency existing in the prior art, and provide a three-dimensional liquid-cooled heat dissipation component for energy storage batteries. This liquid-cooled heat dissipation component can not only significantly improve the thermal management ability of energy storage batteries, extend the service life of the batteries, but also provide additional safety protection for the battery system under extreme conditions, reducing the probability of accidents and their resulting losses.

[0009] To achieve the above purpose, this application discloses a three-dimensional liquid-cooled heat dissipation component for energy storage batteries. The heat dissipation component includes an upper storage layer, an upper heat exchange layer, an attached heat exchange component, a lower heat exchange layer, and a lower storage layer from top to bottom, where:

[0010] The upper heat exchange layer and the lower heat exchange layer are spaced and cooperated to form a sandwich installation position for placing the battery, and the attached heat exchange component divides the sandwich installation position into several heat exchange compartments;

[0011] The upper heat exchange layer has a first liquid inlet and a first liquid outlet. The upper heat exchange layer is connected and cooperated with an attached heat exchange component, and is internally provided with a first heat exchange flow path connecting the first liquid inlet, the second liquid outlet; the first liquid inlet is connected to the liquid outlet of an external liquid cooling circulation device;

[0012] The attached heat exchange component is internally provided with a second heat exchange flow path communicating with the first heat exchange flow path. After the first heat exchange flow path and the second heat exchange flow path are connected in parallel, they are connected and conducted with the first liquid inlet and the first liquid outlet;

[0013] The upper storage layer has an upper transfer cavity for temporarily storing a coolant, and a second liquid inlet and a second liquid outlet communicating with the transfer cavity; the second liquid outlet is connected to the liquid inlet of an external circulating liquid cooling device, and the second liquid inlet communicated with the first liquid outlet. The coolant sent from the external circulating liquid injection cooling device enters the upper transfer cavity after passing through the first heat exchange flow path and the second heat exchange flow path, and then returns to the external circulating liquid injection cooling device from the transfer cavity;

[0014] The lower heat exchange layer has a third liquid inlet, a third liquid outlet, and a bionic flow path connecting the third liquid inlet and the third liquid outlet; the third liquid inlet is connected to the liquid outlet of an external circulating liquid injection cooling device;

[0015] The bionic flow path includes a plurality of cooling flow path groups; each cooling flow path group includes a main flow line connected to the third liquid inlet, a branch flow line connected to the main flow line, and a tributary flow line connected to the third liquid outlet and the branch flow line; the main flow line is composed of a plurality of adjacent regular hexagon-shaped main flow path units connected in sequence, and adjacent main flow path units are connected and communicated; the branch flow line is composed of at least two rows of branch flow path unit rows, and each branch flow path unit row is composed of several adjacent regular hexagon-shaped branch flow path units connected in sequence. At least one branch flow path unit in each branch flow path unit row is connected and conducted with the main flow line; the tributary flow line is provided with tributary flow path unit rows respectively cooperating with each branch flow path unit row; the tributary flow path unit row is composed of several adjacent regular hexagon-shaped tributary flow path units connected in sequence; the size of the main flow path unit is larger than that of the branch flow path unit, and the size of the branch flow path unit is larger than that of the tributary flow path unit;

[0016] The lower storage layer has a lower transfer cavity for temporarily storing a coolant, and a fourth liquid inlet and a fourth liquid outlet communicating with the transfer cavity; the fourth liquid outlet is connected to the liquid inlet of an external circulating liquid cooling device, and the third liquid inlet communicated with the fourth liquid outlet. The coolant sent from the external circulating liquid injection cooling device enters the lower transfer cavity after passing through the bionic flow path, and then returns to the external circulating liquid injection cooling device from the transfer cavity;

[0017] In some embodiments, adjacent branch flow path unit rows in the branch flow line are connected to each other.

[0018] In some embodiments, in the diversion line, each row of diversion channel unit rows is connected and coordinated with at least one row of branch channel unit rows.

[0019] In some embodiments, in the branch line, adjacent rows of branch channel units are interconnected.

[0020] In some embodiments, the attached heat exchange component includes a T-shaped body and a T-shaped heat exchange channel arranged in the body, wherein the body has a horizontal section and a vertical section perpendicular to the horizontal section, and interfaces are provided at both ends of the horizontal section; the interface has a guide surface and at least one sealing rubber ring provided on the interface surface, and the interface is connected to the first heat exchange channel in the upper heat exchange layer; a heat-conductive silicone layer is provided on the lower surface of the horizontal section and the side of the vertical section; the heat exchange channel has a first section and a second section located in the horizontal section, and a U-shaped section located in the vertical section, and the two ends of the U-shaped section are respectively connected to the first section and the second section to form a complete and continuous second heat exchange channel connected in parallel with the first heat exchange channel.

[0021] Furthermore, the vertical section is U-shaped, and the vertical section cooperates with the horizontal section to form a hollow portion, and the hollow portion is filled with flame-retardant rubber to form a flame-retardant layer.

[0022] Furthermore, a serrated plate is provided at the interface, and the serrated plate is used to disturb the flow of the heat exchange flow channel.

[0023] In some embodiments, a plurality of fire extinguishing holes sealed by rubber plugs are provided at the bottom of the upper reservoir.

[0024] In some embodiments, a thermal insulation layer is interposed between the upper storage layer and the upper heat exchange layer.

[0025] In some embodiments, a heat insulation layer is interposed between the lower heat exchange layer and the lower storage layer.

[0026] In some embodiments, a thermally conductive silicone sheet is provided on the lower surface of the upper heat exchange layer, the upper surface of the lower heat exchange layer, and the outer surface of the attached heat exchange component.

[0027] In some embodiments, a heat dissipation fin group is provided on the upper surface of the upper reservoir.

[0028] Compared with the prior art, this application has at least one of the following beneficial effects:

[0029] 1. Improved heat dissipation efficiency: This three-dimensional liquid cooling assembly utilizes a multi-layered structure and multi-dimensional heat exchange channel design to effectively increase the contact area with the battery surface, achieving a wider range of heat dissipation coverage. Compared to traditional planar heat exchange methods, this three-dimensional heat exchange method significantly improves heat dissipation efficiency and can maintain battery temperature uniformity under high load or extreme conditions, preventing local overheating.

[0030] 2. Extending battery life: By dissipating heat evenly and effectively, the temperature gradient within the battery is reduced, preventing local material aging due to overheating. This not only helps improve the overall performance of the battery, but also effectively extends the battery life and reduces maintenance costs caused by frequent battery replacement.

[0031] 3. Enhanced Safety: The heat dissipation assembly incorporates a flame-retardant rubber layer, fire extinguishing vents, and thermal insulation, providing additional safety protection in the event of thermal runaway or an abnormal rise in internal battery temperature. The flame-retardant rubber layer prevents fire from spreading in its early stages, while the fire extinguishing vents release extinguishing agent in an emergency, reducing the risk of fire spreading.

[0032] 4. Improving the stability and durability of the heat dissipation structure: By incorporating a serrated plate spoiler design and the use of thermally conductive silicone sheets into the heat exchange assembly, the flow efficiency of the heat exchange fluid is further improved, optimizing heat dissipation performance. Furthermore, the use of thermally conductive silicone sheets enhances the seal and contact heat conduction between the heat exchange assembly and the battery, improving the structural stability and long-term durability of the entire heat dissipation system.

[0033] The above-listed beneficial effects are not exhaustive and other potential beneficial effects and detailed technical implementations will be further disclosed in the examples or other description sections of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] After reading the following detailed description in conjunction with the accompanying drawings, you will better understand various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the drawings and the like sometimes do not represent the actual positions, sizes, and ranges. In the drawings:

[0035] Figure 1 It is a structural diagram of an embodiment disclosed in this application.

[0036] Figure 2 It is a structural schematic diagram of an embodiment disclosed in this application from another perspective.

[0037] Figure 3 It is a structural diagram of an embodiment disclosed in this application from another perspective.

[0038] Figure 4 It is a structural schematic diagram of an attached heat exchange component in an embodiment disclosed in the present application.

[0039] Figure 5 It is a structural schematic diagram of an attached heat exchange component from another perspective in an embodiment disclosed in the present application.

[0040] Figure 6It is a schematic structural diagram of an attached heat exchange component in another perspective in an embodiment disclosed in the present application. In this figure, the attached heat exchange component cooperates with the battery.

[0041] Figure 7 It is a schematic cross-sectional structural diagram of an attached heat exchange component in an embodiment disclosed in the present application.

[0042] Figure 8 It is a schematic structural diagram of a lower heat exchange layer in an embodiment disclosed in the present application.

[0043] Figure 9 It is a perspective structural view of a lower heat exchange layer in an embodiment disclosed in the present application.

[0044] Figure 10 It is a working flow chart after the battery catches fire in an embodiment disclosed in the present application. Detailed implementation manners

[0045] The present disclosure will be described below with reference to the accompanying drawings, in which several embodiments of the present disclosure are shown. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0046] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0047] It should be understood that the terms used in the specification are only for describing specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0048] The singular forms "a", "the", and "said" used in the specification include the plural forms unless clearly specified. The terms "including", "comprising", and "containing" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the related listed items. Embodiments

[0049] Such as Figures 1 to 9As shown, this embodiment details a three-dimensional liquid cooling and heat dissipation assembly for energy storage batteries. This assembly aims to achieve efficient heat dissipation and safety protection through a multi-layered heat exchange structure and liquid storage system. The following details the assembly's various structural components, design rationale, operating principle, operating procedures, and effects, ensuring completeness and detail.

[0050] Figures 1 - 3 Figure 2 shows a schematic diagram of the structure with a single battery 6. In this embodiment, the liquid cooling heat dissipation assembly comprises, from top to bottom, an upper reservoir 1, an upper heat exchange layer 2, an attached heat exchange assembly 3, a lower heat exchange layer 4, and a lower reservoir 5. These components form a highly integrated heat dissipation system. This system efficiently dissipates heat from the battery 6 within a limited space and, in the event of an emergency, provides coolant to extinguish fires.

[0051] Specifically, in this embodiment, the upper reservoir 1 is made of a high-temperature-resistant, high-strength polymer material, and its internal structure has an upper transfer chamber for transferring and storing the coolant.

[0052] The upper transfer chamber is used to temporarily store the coolant delivered from the external circulating liquid injection cooling device to ensure a continuous and stable supply of liquid in the system. At the same time, it can quickly release the coolant in an emergency to achieve a fire extinguishing function.

[0053] Specifically, the upper reservoir 1 is connected to the liquid outlet of an external circulating liquid cooling device (not shown in the figure, and not a component of this application) via a second liquid inlet. After heat exchange, some of the coolant enters the reservoir 1 and is transferred within the upper transfer chamber. Subsequently, the coolant is delivered to the external circulating liquid injection cooling device through the second liquid outlet, forming a coolant circulation channel.

[0054] In addition, multiple fire extinguishing holes are provided on the bottom surface of the upper reservoir 1. These fire extinguishing holes are usually sealed with rubber plugs to prevent coolant leakage. When the temperature of the battery 6 is abnormal or a fire occurs, the rubber plug will melt due to the heat, and the fire extinguishing hole will be opened, and the coolant will be quickly released, directly acting on the fire source. The coolant not only quickly covers the fire source through the fire extinguishing hole, but also penetrates into the gaps in the internal structure of the battery 6, preventing the fire from spreading further. This design ensures that the fire can be effectively controlled in the early stages, preventing the flames from spreading to other battery 6 modules or system components, and ensuring the overall safety of the system.

[0055] In addition, as an optional design, a plurality of heat dissipation fins 7 are provided on the top surface of the upper reservoir 1 , and the heat dissipation fins 7 play an auxiliary heat dissipation role in the entire liquid-cooled heat dissipation assembly.

[0056] These heat dissipation fins 7 are usually made of a high thermal conductivity material (such as aluminum alloy or copper) and are evenly distributed on the outer surface of the upper reservoir 1. The main function of the heat dissipation fins is to increase the surface area of the upper reservoir, thereby improving the heat dissipation efficiency.

[0057] Specifically, as the coolant circulates within the upper reservoir 1, the heat dissipation fins 7 effectively transfer the heat accumulated within the upper reservoir 1 to the external environment by increasing the contact area with the outside air. This process significantly accelerates the cooling of the coolant, preventing the upper reservoir 1 from heating up due to the coolant remaining at a constant temperature after long-term storage and heat exchange. Furthermore, the heat dissipation fins 7 also reduce the heat dissipation load on other components within the system, ensuring stable operation of the entire liquid-cooled heat dissipation assembly.

[0058] The above composition and connection design ensure the continuous supply of coolant in the system, which not only provides coolant for the upper heat exchange layer 2, but also can quickly mobilize the reserved coolant for fire fighting in emergency situations.

[0059] It should be understood that the external circulating liquid cooling device can be an independent circulating cooling device, which includes a coolant pump, a heat exchanger, and a liquid storage tank. The coolant pump draws coolant from the liquid storage tank and sends it into the liquid cooling and heat dissipation assembly, where it flows inside and removes heat generated by the battery 6. The coolant then returns to the heat exchanger for cooling and then returns to the liquid storage tank, forming a circulating cooling system.

[0060] In this embodiment, the upper heat exchange layer 2, which serves as the heat exchange layer on top of the battery 6, is made of a highly thermally conductive metal material such as aluminum alloy or copper. It includes a first heat exchange channel. This first heat exchange channel significantly increases its surface area through a number of curved or serpentine curves, thereby increasing the contact area between the coolant and the metal surface and, in turn, improving heat exchange efficiency.

[0061] During the operation of the upper heat exchange layer 2, the coolant enters the first heat exchange channel of the upper heat exchange layer 2 through the first liquid inlet from the external circulation liquid injection cooling device. In the first heat exchange channel, part of the coolant is diverted to the second heat exchange channel.

[0062] The coolant in the upper first heat exchange channel performs preliminary heat exchange with the metal surface, directly or indirectly contacts the top surface of the battery 6, and takes away part of the heat generated by the battery 6. The coolant after heat exchange flows out through the first liquid outlet.

[0063] The coolant entering the second heat exchange flow channel to which the heat exchange assembly 3 is attached comes into direct or indirect contact with the side of the battery 6 , thereby performing a deeper heat dissipation treatment on the battery 6 .

[0064] From the above structural composition, it can be seen that in this embodiment, the attached heat exchange component 3 plays an important role. As for the structure of the attached heat exchange component 3 itself, it adopts a T-shaped structure, which is composed of a horizontal section 301 and a vertical section 302.

[0065] In terms of material selection, the attached heat exchange component 3 is made of high thermal conductivity and corrosion-resistant materials such as copper or stainless steel to ensure its reliability in harsh working environments such as high temperature and high humidity.

[0066] In the above structural composition, the horizontal section 301 is used to connect with the upper heat exchange layer 2 and make the second heat exchange flow path in parallel with the first heat exchange flow path to ensure efficient heat transfer.

[0067] Specifically, a U-shaped flow path 303 is provided in the vertical section 302, and a first section 304 and a second section 305 are provided in the horizontal section 301. After the cooling liquid flows into the U-shaped flow path 303 from the first section 304, it is then output from the second section 305.

[0068] In the above, the design purpose of the U-shaped section 303 is to extend the flow path of the coolant, increase its contact time and area with the metal surface of the vertical section, thereby further improving the heat exchange efficiency. In addition, the design of the U-shaped section 303 also effectively reduces the pressure drop of the coolant during the flow process.

[0069] In this embodiment, after the coolant flows through the attached heat exchange component 3, it takes away more heat generated by the battery 6, and then flows out through the second heat exchange flow path and returns to the upper reservoir 1.

[0070] To further increase the contact area with the battery 6 and thus improve the heat exchange efficiency, in addition, the surfaces of the horizontal section 301 and the vertical section 302 of the attached heat exchange component 3 are both covered with a thermal conductive silicone layer. This thermal conductive silicone layer made of high thermal conductivity silicone material ensures close contact between the attached heat exchange component and the surface of the battery 6, enabling heat to be quickly transferred from the battery 6 to the coolant.

[0071] To ensure the connection seal between the attached heat exchange component 3 and the upper heat exchange layer 2, a sealing rubber ring is provided at the connection interface of the horizontal section 301. These rubber rings are usually made of high temperature and corrosion-resistant silicone rubber materials. The sealing rubber ring can effectively prevent the leakage of the coolant at the interface, ensure that the flow path of the coolant is completely sealed, and improve the operating efficiency and safety of the system.

[0072] In addition, the vacancy formed by the U-shaped vertical section 302 of the attached heat exchange component 3 in cooperation with the horizontal section 301 is filled with a flame-retardant rubber layer 306. The purpose of this design is that in the event of a fire in the system, the flame-retardant rubber layer 306 can play a role in isolating the fire source and preventing the fire from spreading to other parts through the heat exchange component.

[0073] It should be understood that the flame retardant rubber layer 306 is made of high-performance flame retardant material, can remain stable at high temperatures, and will not produce harmful gases, further improving the safety of the system.

[0074] In addition, as for the attached heat exchange component 3, in order to further optimize the flow state of the coolant, a serrated plate is provided at the interface near the liquid inlet end. The function of the serrated plate is to disturb the flow, that is, when the coolant flows through the flow channel, the serrated plate can break the laminar flow state of the coolant and form turbulence, thereby increasing the contact area between the coolant and the flow channel wall, and further improving the heat exchange efficiency.

[0075] In this embodiment, the lower heat exchange layer 4 has a similar structure to the upper heat exchange layer 2, also made of a highly thermally conductive metal material, but its internal flow channel design is more complex. This flow channel system, through a biomimetic design, interconnects multiple regular hexagonal units to form a main flow line, branch lines, and tributary lines. During its flow, the coolant first passes through the main flow line and is then divided into the branch lines and tributary lines. This ensures that the liquid maximizes contact with the heat exchange surface as it flows through the flow channel, thereby improving heat exchange efficiency.

[0076] The bionic flow channel design not only optimizes the liquid flow path and reduces flow resistance, but also avoids the formation of localized dead zones, ensuring uniform heat transfer throughout the channel. After passing through the bionic flow channel system in the lower heat exchange layer, the coolant absorbs the heat generated by battery 6 and flows into the lower reservoir for temporary storage, allowing for further recycling.

[0077] More specifically, the coolant flows in through the main flow line 401. The main flow line 401 is composed of a plurality of regular hexagonal main flow channel units 402 connected in sequence. Adjacent main flow channel units 402 are connected to ensure smooth flow of the coolant and reduce flow resistance.

[0078] It's important to understand that the regular hexagonal shape was chosen for the following reasons: Given the same area, the perimeter of a regular hexagon is minimal. This means the flow path is shorter, effectively reducing frictional resistance during the flow of the liquid coolant, thereby lowering flow resistance and improving flow efficiency. Furthermore, the regular hexagonal shape lacks right-angled corners, avoiding the formation of dead zones and ensuring more uniform coolant flow within the flow channel, reducing the risk of localized overheating.

[0079] In this embodiment, the main flow line 401 is connected to multiple branch flow lines 403, each of which is composed of at least two rows of branch flow unit rows 404. Each branch flow unit row 404 is composed of a plurality of regular hexagonal branch flow units 405 that are sequentially connected and interconnected. At least one branch flow unit 405 in each branch flow unit row 404 is connected to the main flow line 401, ensuring that the coolant is evenly distributed from the main flow line 401 to each branch flow line 403. The design principle of the branch flow unit 405 is similar to that of the main flow unit 402, aiming to optimize the flow path of the coolant and further reduce flow resistance.

[0080] Branch line 403 connects to multiple branch lines 406, each of which is equipped with a branch channel unit row 407 that matches each branch channel unit row 404. Branch channel unit row 407 is composed of a number of regular hexagonal branch channel units 408 that are connected in sequence, ensuring that the coolant can be further refined and distributed, achieving a more uniform cooling effect.

[0081] More specifically, the main channel unit 402 is the largest, the branch channel unit 405 is second only to the branch channel unit 408, which is the smallest. This design can change the heat exchange area while ensuring the overall strength of the liquid cooling plate, thereby maximizing the heat exchange efficiency of the coolant.

[0082] Specifically, after the coolant enters, the flow path is gradually refined to ensure that the coolant can be expanded and distributed from left to right to the entire plate.

[0083] To further illustrate this embodiment, the lower reservoir 5 performs the function of recovering and recycling the coolant within the entire system, and also serves as a safety barrier beneath the battery 6. The lower reservoir 5 receives coolant from the lower heat exchange layer via the fourth liquid inlet. After a brief storage period, the coolant re-enters the external circulating liquid injection and cooling device via the fourth liquid outlet, completing the coolant circulation process.

[0084] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications may be made to the exemplary embodiments of the present disclosure without departing substantially from the spirit and scope of the present disclosure. Therefore, all such changes and modifications are intended to be within the scope of protection of the present disclosure as defined by the appended claims. The present disclosure is defined by the appended claims, and equivalents of these claims are intended to be included therein.

Claims

1. A three-dimensional liquid cooling heat dissipation component for an energy storage battery, characterized in that: The heat dissipation component from top to bottom is an upper reservoir, an upper heat exchange layer, an attached heat exchange component, a lower heat exchange layer, and a lower reservoir. Among them, the upper heat exchange layer and the lower heat exchange layer are spaced and cooperated to form a sandwich installation position for placing the battery, and the attached heat exchange component divides the sandwich installation position into several heat exchange compartments; the upper heat exchange layer has a first liquid inlet and a first liquid outlet. The upper heat exchange layer is connected and cooperated with the attached heat exchange component, and is internally provided with a first heat exchange flow path connecting the first liquid inlet and the second liquid outlet; the first liquid inlet is connected to the liquid outlet of the external liquid cooling circulation device; the attached heat exchange component is internally provided with a second heat exchange flow path connected to the first heat exchange flow path. After the first heat exchange flow path and the second heat exchange flow path are connected in parallel, they are connected and conducted with the first liquid inlet and the first liquid outlet; the upper reservoir has an upper transfer cavity for transferring and storing the coolant, and a second liquid inlet and a second liquid outlet communicated with the transfer cavity; the second liquid outlet is connected to the liquid inlet of the external circulating liquid cooling device, and the second liquid inlet communicated with the first liquid outlet. The coolant sent from the external circulating liquid cooling device enters the upper transfer cavity after passing through the first heat exchange flow path and the second heat exchange flow path, and then flows back to the external circulating liquid cooling device from the transfer cavity; a plurality of fire extinguishing holes sealed by rubber plugs are opened at the bottom of the upper reservoir; the lower heat exchange layer has a third liquid inlet, a third liquid outlet, and a bionic flow path connecting the third liquid inlet and the third liquid outlet; the third liquid inlet is connected to the liquid outlet of the external circulating liquid cooling device; the bionic flow path includes a plurality of cooling flow path groups; the cooling flow path group includes a main flow line connected to the third liquid inlet, a branch flow line connected to the main flow line, and a tributary flow line connected to the third liquid outlet and the branch flow line; the main flow line is composed of a plurality of regular hexagon-shaped main flow channel units connected in sequence, and adjacent main flow channel units are connected and communicated; the branch flow line is composed of at least two rows of branch flow channel unit rows, and each branch flow channel unit row is composed of a plurality of regular hexagon-shaped branch flow channel units connected in sequence. At least one branch flow channel unit in each branch flow channel unit row is connected and conducted with the main flow line; the tributary flow line is provided with a tributary flow channel unit row matched with each branch flow channel unit row; the tributary flow channel unit row is composed of a plurality of regular hexagon-shaped tributary flow channel units connected in sequence; the size of the main flow channel unit is larger than that of the branch flow channel unit, and the size of the branch flow channel unit is larger than that of the tributary flow channel unit; the lower reservoir has a lower transfer cavity for transferring and storing the coolant, and a fourth liquid inlet and a fourth liquid outlet communicated with the transfer cavity; the fourth liquid outlet is connected to the liquid inlet of the external circulating liquid cooling device, and the third liquid inlet communicated with the fourth liquid outlet. The coolant sent from the external circulating liquid cooling device enters the lower transfer cavity after passing through the bionic flow path, and then flows back to the external circulating liquid cooling device from the transfer cavity; The attached heat exchange component includes a T-shaped body and a T-shaped heat exchange flow channel arranged in the body. Among them, the body has a horizontal section and a vertical section perpendicular to the horizontal section, and interfaces are provided at both ends of the horizontal section; the interfaces have a guiding surface and at least one sealing rubber ring arranged on the interface surface, and the interfaces are connected to the first heat exchange flow channel in the upper heat exchange layer; a heat-conducting silica gel layer is provided on the lower surface of the horizontal section and the side surface of the vertical section; the heat exchange flow channel has a first section and a second section located in the horizontal section, and a U-shaped section located in the vertical section. The two ends of the U-shaped section are respectively connected to the first section and the second section to form a complete and continuous second heat exchange flow channel in parallel with the first heat exchange flow channel; the vertical section is U-shaped, and the vertical section and the horizontal section cooperate to form a hollow position, and the hollow position is filled with flame-retardant rubber to form a flame-retardant layer.

2. The three-dimensional liquid cooling heat dissipation component for an energy storage battery according to claim 1, wherein: The adjacent shunt channel unit rows in the shunt line are interconnected.

3. A three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, characterized in that: In the shunt line, each row of shunt channel unit rows is connected and cooperated with at least one row of branch channel unit rows.

4. A three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, characterized in that: In the branch line, the adjacent branch channel unit rows are interconnected.

5. The three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, characterized in that: A serrated plate is provided at the interface, and the serrated plate is used for disturbing the flow of the heat exchange flow channel.

6. The three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, wherein: An insulating layer is interposed between the upper reservoir and the upper heat exchange layer.

7. The three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, wherein: An insulating layer is interposed between the lower heat exchange layer and the lower reservoir.

8. The three-dimensional liquid cooling heat dissipation assembly for an energy storage battery as described in claim 1, wherein: Heat-conducting silica gel sheets are provided on the lower surface of the upper heat exchange layer, the upper surface of the lower heat exchange layer, and the outer surface of the attached heat exchange component.

9. The three-dimensional liquid cooling heat dissipation component for an energy storage battery as described in claim 1, wherein: A heat dissipation fin group is provided on the upper surface of the upper reservoir.

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