Heat dissipation device for energy storage equipment

Abstract

The present invention relates to the field of heat dissipation technology, and specifically to a heat dissipation device for energy storage equipment, including a battery mounting frame, wherein a plurality of battery mounting cavities and heat dissipation cavities are arranged inside the battery mounting frame, batteries are installed inside the battery mounting cavities, heat dissipation pipes are installed inside the heat dissipation cavities, and input boxes and output boxes for accommodating heat dissipation media are respectively arranged at the outer ends of the battery mounting frame corresponding to the two ends of the heat dissipation pipes, and a valve assembly and a temperature drive assembly are arranged inside each heat dissipation pipe, and a circulating heat dissipation assembly and an automatic control assembly are arranged between the input box and the output box. The present application can make the heat dissipation medium circulate and dissipate heat between the input box and the output box through the circulating heat dissipation assembly and the heat dissipation pipe, and the uniform and dense design of the battery mounting cavity and the heat dissipation cavity can efficiently conduct the heat generated inside the battery during the charging and discharging process to the heat dissipation pipe through the battery mounting frame, thereby ensuring the heat dissipation effect for large-capacity batteries.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation, and in particular to a heat dissipation device for energy storage equipment. Background Art

[0002] With the global emphasis on renewable energy and the growing demand for energy storage, energy storage equipment has become increasingly prominent in the energy field. Among the many energy storage technologies, lithium battery energy storage technology has developed rapidly. As energy storage equipment, lithium batteries have been widely used in many fields such as power system peak shaving, electric vehicle power supply, and distributed energy storage.

[0003] At present, increasing the diameter of a single lithium battery is an effective way to improve the energy density of lithium batteries. Increasing the battery diameter can increase the active material that can be accommodated inside the battery, allowing the battery to store more energy. However, large-diameter batteries will generate a lot of heat during the charging and discharging process. If the heat cannot be dissipated in time and effectively, the internal temperature of the lithium battery will be too high, and excessive temperature will cause the performance of the lithium battery to decline.

[0004] Existing heat dissipation technologies mainly include: air cooling, liquid cooling, heat pipe cooling, etc. The common feature of air cooling, liquid cooling, and heat pipe cooling is that they dissipate heat from one end of the device to the other. In the same chassis, the cooling medium usually enters from the front end, passes through the lithium battery energy storage unit, and then is discharged from the back end. The cooling medium temperature in the area near the front end is lower and can take away more heat. As the cooling medium flows in the device, it absorbs heat and the temperature rises, resulting in the heat dissipation effect at the back end of the device being worse than that at the front end.

[0005] Uneven heat dissipation will not only cause an imbalance in performance between units, leading to an imbalance in overall performance and making the equipment unable to perform at its best, but will also accelerate local aging and reduce the overall life of the energy storage equipment. In addition, local high temperatures caused by uneven heat dissipation may also cause safety accidents.

[0006] Therefore, how to ensure the heat dissipation effect of energy storage devices using large-diameter batteries is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0007] In order to ensure the heat dissipation effect of an energy storage device using a large-diameter battery, the present application provides a heat dissipation device for the energy storage device.

[0008] The heat dissipation device of the energy storage device provided in the present application adopts the following technical solution:

[0009] A heat dissipation device for energy storage equipment comprises a battery mounting frame, wherein a plurality of battery mounting cavities and heat dissipation cavities are provided inside the battery mounting frame and are evenly spaced and densely distributed, wherein a storage battery is installed inside the battery mounting cavity, wherein a heat dissipation tube is installed inside the heat dissipation cavity, wherein an input box and an output box for accommodating a heat dissipation medium are respectively provided at the outer ends of the battery mounting frame corresponding to the two ends of the heat dissipation tube, wherein a valve assembly and a temperature drive assembly are provided inside each of the heat dissipation tubes, wherein the valve assembly and the temperature drive assembly are transmission-connected, wherein a circulating heat dissipation assembly is provided between the input box and the output box, and wherein an automatic control assembly electrically connected to the circulating heat dissipation assembly is also provided between the input box and the output box.

[0010] By adopting the above technical solution, the temperature driving component can drive the valve component to open and close according to the temperature change of the outer periphery of the heat dissipation pipe, and the automatic control component can automatically control the circulation heat dissipation component to start and stop. After the valve component is opened, the automatic control component automatically controls the circulation heat dissipation component to start, and the circulation heat dissipation component will circulate the heat dissipation medium inside the input box and the output box, so that the heat dissipation medium can accurately dissipate heat according to the heating condition of each battery, which can not only ensure the uniformity of heat dissipation of the energy storage device, but also reduce the energy consumption during the heat dissipation operation.

[0011] Furthermore, the valve assembly includes a valve sleeve, the outer side surface of the valve sleeve is provided with a first external thread, the interior of the heat dissipation tube is provided with a first internal thread corresponding to the first external thread, the valve sleeve is connected to the interior of the heat dissipation tube via the first external thread and the first internal thread sealing thread, the inner side surface of the valve sleeve is set as a smooth cylindrical surface, the internal sealing sliding connection of the valve sleeve is connected with a piston valve, and the piston valve is transmission connected to the temperature drive assembly.

[0012] By adopting the above technical solution, the temperature driving component can be used to drive the piston valve to move. When the piston valve moves from the inside of the cylindrical surface to the outside of the valve sleeve, the corresponding valve component will be in an open state, and the heat dissipation medium inside the input box can enter the output box through the corresponding heat dissipation pipe, thereby making the pressure inside the input box and the output box equal. At this time, the automatic control component is used to automatically control the start of the circulation heat dissipation component to enter the heat dissipation working state.

[0013] Furthermore, one end of the piston valve away from the temperature driving component is fixedly connected to a first spring, and one end of the first spring away from the piston valve is rotatably connected to a baffle frame, and a fourth external thread is provided at the outer end of the baffle frame, and the baffle frame is threadedly connected to the first internal thread and the heat dissipation pipe through the fourth external thread.

[0014] By adopting the above technical solution, the baffle frame can be used to reduce the direct impact of the heat dissipation medium on the piston valve during the circulation process. At the same time, the first spring can cooperate with the temperature drive component in time to restore the piston valve to its initial position after the heat dissipation is completed, thereby ensuring the stability and reliability of the piston valve during the operation process.

[0015] Furthermore, the temperature driving component includes a piston cylinder fixedly connected to the inside of the heat dissipation tube, a piston body is sealingly and slidably connected to the inside of the piston cylinder, a piston rod is fixedly connected to the piston body, the piston rod seals and slides through one end of the piston cylinder, the piston rod is correspondingly connected to the valve assembly in transmission, and the interior of the piston cylinder is located at the end of the piston body away from the piston rod and is filled with a thermosensitive medium.

[0016] By adopting the above technical solution, when the temperature of a certain battery rises, the battery mounting frame can transfer the heat to the heat dissipation pipe close to the corresponding outer side of the battery in time. Since the heat dissipation medium is in a stationary state when the valve assembly is closed, the heat dissipation medium in the heat dissipation pipe can quickly transfer the heat to the thermosensitive medium through the piston cylinder. The thermosensitive medium can expand after being heated by utilizing the thermal expansion and contraction characteristics, thereby pushing the piston body inside the piston cylinder to move. The piston body will drive the valve assembly through the piston rod, thereby controlling the corresponding valve assembly to open, thereby allowing the heat dissipation medium to circulate and dissipate heat.

[0017] Furthermore, the outside of the piston cylinder is fixedly connected with a deflector cover, and the end of the deflector cover corresponding to the input box is set as a tapered end, and the end of the deflector cover corresponding to the output box is fixedly connected with at least two connecting blocks, the inner end of the connecting block is connected to the piston cylinder, and the outer end of the connecting block is connected to the heat dissipation pipe, and a gap is set between the deflector cover and the piston cylinder and the heat dissipation pipe.

[0018] By adopting the above technical solution, the deflector can be used to reduce the heat dissipation effect of the cooling medium directly on the piston cylinder during the circulation of the cooling medium, thereby increasing the insulation time of the piston cylinder and the heat-sensitive medium inside it, so that the cooling medium can quickly and continuously dissipate heat and cool down the heat pipe, thereby improving the heat dissipation effect.

[0019] Furthermore, the circulating heat dissipation component includes an input pipe and an output pipe, the input pipe is fixedly and sealedly connected to the input box, the output pipe is fixedly and sealedly connected to the output box, the end of the input pipe away from the input box is fixedly and sealedly connected to the radiator, the end of the output pipe away from the output box is fixedly and sealedly connected to a delivery pump, the delivery pump is sealed and fixedly connected to the radiator, and the delivery pump and the radiator are both electrically connected to the automatic control component.

[0020] By adopting the above technical solution, the automatic control component can be used to control the delivery pump and the radiator to be turned on and off. After the delivery pump is turned on, the heat dissipation medium inside the output box will be pumped into the radiator through the output pipe. When the radiator is turned on, the heat in the heat dissipation medium can be dissipated in time. At the same time, under the action of the delivery pump, the heat dissipation medium in the radiator will enter the input box through the input pipe for circulation.

[0021] Furthermore, the automatic control component includes a first connecting tube and a second connecting tube, the first connecting tube is fixedly and sealingly connected to the input box, the second connecting tube is fixedly and sealingly connected to the output box, a pressure tube is sealed and fixedly connected between the first connecting tube and the second connecting tube, the pressure tube is internally and sealingly slidably connected to a sliding column, a sliding groove is provided on the side wall of the pressure tube, a push plate that is slidingly restricted inside the sliding groove is fixedly connected to the sliding column, the pressure tube is externally fixedly connected to a box body, a control switch electrically connected to the circulating heat dissipation component is provided inside the box body, and the control switch abuts against the push plate.

[0022] By adopting the above technical solution, the pressure tube can be used to directly monitor the pressure changes inside the input box and the output box. When all the valve components are closed, the circulating heat dissipation component continues to input the heat dissipation medium into the input box, the pressure inside the input box will increase, and the heat dissipation medium will push the sliding column to slide in the direction away from the control switch through the first connecting tube. When the sliding column drives the push plate to leave the control switch, the control switch will automatically control the circulating heat dissipation component to stop.

[0023] Furthermore, one end of the push plate away from the control switch is fixedly connected to a second spring, and one end of the second spring away from the push plate is fixedly connected to the box body.

[0024] By adopting the above technical solution, when any one of the valve components is opened, the pressure inside the input box will stop acting on the sliding column, and the second spring will push the sliding column in the opposite direction to slide in the direction close to the control switch. When the sliding column drives the push plate to abut against the control switch again, the control switch will automatically control the circulation heat dissipation component to open.

[0025] Furthermore, the input box is detachably and hermetically connected to an input box cover at one end away from the battery mounting frame, the output box is detachably and hermetically connected to an output box cover at one end away from the battery mounting frame, a flange is provided at one end of the heat dissipation tube close to the output box, a locking nut is provided at one end of the heat dissipation tube close to the input box, a second internal thread is provided inside the locking nut, and a second external thread is provided on the heat dissipation tube for the second internal thread.

[0026] By adopting the above technical solution, the input box, the output box and the battery mounting frame can be conveniently and reliably locked together by using the locking nut and the flange, and the input box cover and the output box cover can conveniently seal the input box and the output box.

[0027] Furthermore, a second heat sink is provided on a side of the output box cover away from the output box.

[0028] By adopting the above technical solution, the second heat sink can be used to dissipate heat for the output box and the heat dissipation medium inside it during operation, so that all the batteries can be cooled simultaneously, further improving the heat dissipation effect.

[0029] Beneficial effects achieved:

[0030] The present application can make the heat dissipation medium circulate and dissipate heat between the input box and the output box through the circulating heat dissipation component and the heat dissipation pipe. The uniform and dense design of the battery installation cavity and the heat dissipation cavity can efficiently transfer the heat generated inside the battery during the charging and discharging process to the heat dissipation pipe through the battery installation frame, thereby ensuring the heat dissipation effect of the large-capacity battery.

[0031] The present application utilizes the cooperation of the valve assembly, the temperature drive assembly, the circulating heat dissipation assembly, and the automatic control assembly to enable the heat dissipation medium to accurately dissipate heat according to the heating conditions of a single battery, which not only ensures the uniformity of heat dissipation for the energy storage device, but also avoids safety accidents caused by local aging of the battery and local high temperature; it also has the advantage of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0033] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application.

[0034] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the present application.

[0035] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of Part I.

[0036] Figure 5 yes Figure 4 A-axis enlarged schematic diagram of the structure.

[0037] Figure 6 It is a schematic diagram of the exploded installation structure on a battery mounting rack in one embodiment of the present application.

[0038] Figure 7 It is a schematic diagram of the exploded installation structure in the heat dissipation pipe in one embodiment of the present application.

[0039] Figure 8 It is a schematic diagram of the structural decomposition of a circulating heat dissipation component in an embodiment of the present application.

[0040] Fig. 9 It is a schematic diagram of the internal structure of an automatic control component in an embodiment of the present application.

[0041] Description of the accompanying drawings: 100, battery mounting frame; 101, battery mounting cavity; 102, heat dissipation cavity; 103, battery; 104, heat dissipation pipe; 105, input box; 106, output box; 107, input box cover; 108, output box cover; 109, flange; 110, locking nut; 111, second internal thread; 112, second external thread; 113, second heat sink; 114, outer shell; 115, air inlet; 116, inclined surface; 117, air outlet; 118, panel; 200, valve assembly; 201, valve sleeve; 202, first external thread; 203, first internal thread; 204, cylindrical surface; 205, piston valve; 206, first spring; 207, resistance Flow rack; 208, fourth external thread; 300, temperature drive component; 301, piston cylinder; 302, piston body; 303, piston rod; 304, air guide cover; 305, connecting block; 306, third external thread; 307, third internal thread; 400, circulation heat dissipation component; 401, input pipe; 402, output pipe; 403, radiator; 404, delivery pump; 405, heat exchange tube; 406, first heat sink; 407, fan; 500, automatic control component; 501, first connecting pipe; 502, second connecting pipe; 503, pressure pipe; 504, sliding column; 505, slide groove; 506, push plate; 507, box body; 508, control switch; 509, second spring. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-9 This application is described in further detail.

[0043] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] An embodiment of the present application discloses a heat dissipation device for energy storage equipment.

[0046] Please refer to Figures 1 to 9 In one embodiment of the present application, a heat dissipation device for energy storage equipment includes a battery mounting frame 100. The battery mounting frame 100 is made of a material with good thermal conductivity, such as copper, aluminum, steel, etc. In this embodiment, aluminum is preferably used for processing and manufacturing. Aluminum has a low density of about 2.7g / cm³, which can greatly reduce the weight compared with other materials such as steel (about 7.83g / cm³). Moreover, the thermal conductivity of aluminum is about 5 times that of steel. Its good thermal conductivity enables it to quickly conduct the heat generated inside the battery during the charging and discharging process. At the same time, compared with some high-performance metal materials such as copper and titanium, aluminum has a lower cost, and its good processing performance also helps to reduce processing costs. While ensuring battery performance and safety, it can reduce the manufacturing cost of the battery and improve production efficiency.

[0047] Please refer to Figures 1 to 9In one embodiment of the present application, a battery mounting rack 100 is provided with a plurality of battery mounting cavities 101 and heat dissipation cavities 102 which are evenly spaced apart. A battery 103 is installed in the battery mounting cavity 101, and a heat dissipation pipe 104 is installed in the heat dissipation cavity 102. An input box 105 and an output box 106 for accommodating heat dissipation medium are respectively arranged at the outer ends of the battery mounting rack 100 corresponding to the two ends of the heat dissipation pipe 104, and a circulating heat dissipation component 400 is arranged between the input box 105 and the output box 106.

[0048] During operation, the heat dissipation medium can be circulated between the input box 105 and the output box 106 through the circulating heat dissipation component 400 and the heat dissipation pipe 104. The uniform and dense design of the battery installation cavity 101 and the heat dissipation cavity 102 can efficiently transfer the heat generated inside the battery during the charging and discharging process to the heat dissipation pipe 104 through the battery mounting frame 100, thereby ensuring the heat dissipation effect of the large-capacity battery.

[0049] Please refer to Figures 1 to 9 In a specific embodiment of the present application, the heat dissipation medium can be configured as different liquid media according to different application environment conditions, such as liquid water, ethylene glycol-water mixture, silicone oil, gallium-based liquid metal, etc.

[0050] Water is a common and efficient liquid heat dissipation medium. It has a high specific heat capacity (4.2×10³J / (kg・℃)). When water is used as a heat dissipation medium, when the battery heats up, water can absorb the heat, thereby effectively reducing the battery temperature. In addition, water is low-cost, easy to obtain, and environmentally friendly.

[0051] Ethylene glycol-water mixture is a widely used antifreeze coolant. By adjusting the ratio of ethylene glycol and water, the freezing point and boiling point of the mixture can be changed to adapt to different temperature environments. For example, in large energy storage battery systems in cold areas, ethylene glycol-water mixture (such as 40%-60% ethylene glycol content) is used as a heat dissipation medium, and its freezing point can be reduced to -20℃ or even lower, effectively preventing the coolant from freezing at low temperatures. At the same time, it also inherits the high specific heat capacity characteristics of water and can absorb the heat generated by the battery well.

[0052] Silicone oil has a wide operating temperature range, generally between -40℃ and 200℃. In some battery cooling systems in high temperature environments, such as industrial high temperature batteries or large uninterruptible power supply (UPS) systems in hot areas, silicone oil can be used as a heat dissipation medium to effectively absorb and transfer heat. At the same time, oil media are non-conductive and will not cause safety issues such as battery short circuits due to leakage.

[0053] The thermal conductivity of gallium-based liquid metal is several orders of magnitude higher than that of water. In some battery systems with extremely high heat dissipation requirements, such as power batteries for high-performance electric vehicles or high-power density energy storage batteries, liquid metal can quickly conduct away the heat generated by the battery. Moreover, liquid metal is liquid at room temperature or within a certain temperature range, and can adapt well to the shape of the battery and the heat dissipation channel.

[0054] Please refer to Figures 1 to 9 In one embodiment of the present application, a valve assembly 200 and a temperature drive assembly 300 are provided inside each heat dissipation pipe 104, the valve assembly 200 and the temperature drive assembly 300 are transmission-connected, and an automatic control assembly 500 electrically connected to the circulating heat dissipation assembly 400 is also provided between the input box 105 and the output box 106.

[0055] During operation, the temperature driving component 300 can drive the valve component 200 to open and close according to the temperature change of the periphery of the heat dissipation pipe 104, and the automatic control component 500 can automatically control the start and stop of the circulation heat dissipation component 400.

[0056] When the valve assembly 200 is opened, the automatic control assembly 500 automatically controls the circulation heat dissipation assembly 400 to start, and the circulation heat dissipation assembly 400 will circulate the heat dissipation medium inside the input box 105 and the output box 106. When all valve assemblies 200 are closed, the automatic control assembly 500 automatically controls the circulation heat dissipation assembly 400 to stop, and the heat dissipation medium inside the input box 105 and the output box 106 is in a static state after the circulation heat dissipation assembly 400 stops. In this way, the heat dissipation medium can accurately dissipate heat according to the heating condition of each storage battery 103, which can not only ensure the uniformity of heat dissipation of the energy storage device, but also reduce the energy consumption required for heat dissipation operation.

[0057] Please refer to Figures 1 to 9 In one embodiment of the present application, the valve assembly 200 includes a valve sleeve 201, the outer side of the valve sleeve 201 is provided with a first external thread 202, the interior of the heat dissipation pipe 104 is provided with a first internal thread 203 corresponding to the first external thread 202, the valve sleeve 201 is sealed and threadedly connected to the interior of the heat dissipation pipe 104 through the first external thread 202 and the first internal thread 203, the inner side of the valve sleeve 201 is set as a smooth cylindrical surface 204, the internal sealing sliding connection of the valve sleeve 201 is connected with a piston valve 205, and the piston valve 205 is transmission-connected to the temperature drive assembly 300.

[0058] During operation, the temperature driving component 300 can be used to drive the piston valve 205 to move. When the piston valve 205 moves from the inside of the cylindrical surface 204 to the outside of the valve sleeve 201, the corresponding valve component 200 will be in an open state, and the heat dissipation medium in the input box 105 can enter the output box 106 through the corresponding heat dissipation pipe 104, thereby making the pressure inside the input box 105 and the output box 106 equal. At this time, the automatic control component 500 is used to automatically control the circulation heat dissipation component 400 to start and enter the heat dissipation working state.

[0059] At the same time, the relative position of the valve sleeve 201 and the piston valve 205 can be adjusted by the sealing threaded connection of the first external thread 202 and the first internal thread 203. When the external environment temperature of the energy storage device is low, such as Northern Europe, Siberia, Northeast China or winter, the heat generated by the battery during operation is relatively easier to dissipate. Because the low temperature environment and the temperature of the battery itself form a large temperature gradient, the heat will naturally be transferred from the high temperature battery to the low temperature external environment. In this way, the valve sleeve 201 can be adjusted to a position farther away from the temperature drive component 300 through the first external thread 202 and the first internal thread 203, and the movement distance of the temperature drive component 300 to drive the piston valve 205 to open the valve component 200 will become larger, which is conducive to further reducing the energy consumption required for heat dissipation and increasing the energy saving of the energy storage device.

[0060] Similarly, when the external environment temperature of the energy storage device is high, the valve sleeve 201 is adjusted to a position closer to the temperature drive component 300 through the first external thread 202 and the first internal thread 203, and the movement distance of the valve component 200 driven by the temperature drive component 300 to drive the piston valve 205 to open will become smaller, which is conducive to ensuring the heat dissipation performance of the battery. This design can ensure that the energy storage device can be used in complex and harsh environments, and further increases the practicality of the heat dissipation device.

[0061] Please refer to Figures 1 to 9 In one embodiment of the present application, one end of the piston valve 205 away from the temperature driving component 300 is fixedly connected to the first spring 206, and one end of the first spring 206 away from the piston valve 205 is rotatably connected to the baffle frame 207. The outer end of the baffle frame 207 is provided with a fourth external thread 208, and the baffle frame 207 is threadedly connected to the first internal thread 203 and the heat dissipation pipe 104 through the fourth external thread 208.

[0062] During the operation, the baffle frame 207 can be used to reduce the direct impact of the heat dissipation medium on the piston valve 205 during the circulation operation, thereby improving the stability of the piston valve 205 during the operation. At the same time, the first spring 206 can be used to cooperate with the temperature drive component 300 in time after the heat dissipation is completed to restore the piston valve 205 to its initial position, thereby ensuring the reliability of the piston valve 205 during the operation.

[0063] Please refer to Figures 1 to 9 In one embodiment of the present application, the temperature driving component 300 includes a piston cylinder 301 fixedly connected to the inside of the heat dissipation pipe 104, and the piston cylinder 301 is sealed and slidably connected to the piston body 302, and the piston body 302 is fixedly connected to the piston rod 303. The piston rod 303 seals and slides through one end of the piston cylinder 301, and the piston rod 303 is fixedly connected to the piston valve 205 in the valve assembly 200. The interior of the piston cylinder 301 is located at the end of the piston body 302 away from the piston rod 303, and the space is filled with a thermosensitive medium with thermal expansion and contraction characteristics.

[0064] During operation, when the temperature of a battery 103 rises, the battery mounting frame 100 can transfer the heat to the heat dissipation pipe 104 near the outside of the corresponding battery 103 in time. Since the heat dissipation medium is in a stationary state when the valve assembly 200 is closed, the heat dissipation medium in the heat dissipation pipe 104 can quickly transfer the heat to the thermosensitive medium through the piston cylinder 301. The thermosensitive medium can expand after being heated by utilizing the thermal expansion and contraction characteristics, thereby pushing the piston body 302 inside the piston cylinder 301 to move. The piston body 302 will drive the valve assembly 200 through the piston rod 303, thereby controlling the corresponding valve assembly 200 to open, so that the heat dissipation medium can circulate and dissipate heat.

[0065] In a specific embodiment of the present application, the thermosensitive medium is mercury, which is a common liquid metal. It not only has a large thermal expansion coefficient, but also can cause obvious volume expansion with a small temperature change to drive the piston to move; the volume also changes linearly with temperature, which is conducive to accurately reflecting the temperature; at the same time, it has stable chemical properties and good compatibility with common materials; it also has good fluidity and can apply pressure steadily to make the piston movement of the piston body 302 sensitive and stable; and mercury has a high boiling point and a low freezing point, a wide applicable temperature range, and can work stably in a variety of environments, which is conducive to effectively converting temperature changes into mechanical movement.

[0066] It is understandable that in a specific embodiment of the present application, the thermosensitive medium may also be alcohol, aqueous solution, etc. Alcohol is a commonly used temperature measuring liquid, and its thermal expansion and contraction characteristics are more significant. The thermal expansion and contraction properties of alcohol can more accurately reflect temperature changes. Water also follows the law of thermal expansion and contraction above 4°C. The volume expands when the temperature rises and contracts when the temperature drops. The preferred operating temperature of lithium batteries is between 15°C and 35°C, so aqueous solutions are also suitable for thermosensitive media.

[0067] Please refer to Figures 1 to 9 In one embodiment of the present application, a deflector 304 is fixedly connected to the outside of the piston cylinder 301. The deflector 304 is set as a tapered end at one end facing the input box 105. A through hole is provided at the tapered end corresponding to the piston rod 303. The deflector 304 is sealed and slidably connected to the piston rod 303 through the through hole. The deflector 304 is set as an open end at one end facing the output box 106. Three annularly evenly distributed connecting blocks 305 are fixedly connected to the open end. The middle part of the connecting block 305 is fixedly connected to the deflector 304 by welding. One end of the connecting block 305 located inside the deflector 304 is fixedly connected to the outer side of the piston cylinder 301 near its lower end by thread. The outer end of the connecting block 305 is provided with a third external thread 306. The interior of the heat dissipation pipe 104 is provided with a third internal thread 307. The deflector 304 is fixedly connected to the interior of the heat dissipation pipe 104 through the third external thread 306 and the third internal thread 307. In this way, there are gaps between the air guide cover 304 and the piston cylinder 301 as well as the heat dissipation pipe 104, and the cooling medium is filled in the gaps.

[0068] During operation, when the cooling medium is in a stationary state, the heat generated by the battery is transferred to the thermosensitive medium through the battery mounting frame 100, the heat dissipation pipe 104, the cooling medium, and the piston cylinder 301 in sequence. After the thermosensitive medium is heated and expanded, it drives the piston valve 205 to slide through the piston body 302 and the piston rod 303. When the piston valve 205 slides to open the valve assembly 200, the cooling medium will enter the output box 106 from the input box 105 through the valve assembly 200 and the heat dissipation pipe 104 for circulation.

[0069] During the operation of circulating cooling of the cooling medium, the air guide 304 can accelerate the flow rate of the cooling medium when it flows through the gap between the air guide 304 and the heat pipe 104. The accelerated flow rate of the cooling medium can quickly take away the heat, because more cooling medium flows through the heat pipe 104 per unit time, which can improve the efficiency of heat transfer. In addition, the accumulation of heat inside the battery mounting frame 100 is reduced, and the risk of local overheating is reduced. On the other hand, the cooling medium in the gap between the air guide 304 and the piston cylinder 301 will be in a stationary state, which can delay and reduce the cooling effect of the cooling medium directly on the piston cylinder 301, thereby increasing the insulation time of the piston cylinder 301 and the heat-sensitive medium inside it, so that the cooling medium can quickly and continuously dissipate heat and cool the heat pipe 104, thereby ensuring the heat dissipation effect on the battery.

[0070] Please refer to Figures 1 to 9 In one embodiment of the present application, the circulating heat dissipation component 400 includes an input pipe 401 and an output pipe 402, the input pipe 401 is fixedly and sealedly connected to the input box 105, the output pipe 402 is fixedly and sealedly connected to the output box 106, the end of the input pipe 401 away from the input box 105 is fixedly and sealedly connected to the radiator 403, the end of the output pipe 402 away from the output box 106 is fixedly and sealedly connected to the delivery pump 404, the delivery pump 404 is sealed and fixedly connected to the radiator 403, and the delivery pump 404 and the radiator 403 are both electrically connected to the automatic control component 500.

[0071] During operation, the automatic control component 500 can be used to control the delivery pump 404 and the radiator 403 to be turned on and off. After the delivery pump 404 is turned on, the heat dissipation medium inside the output box 106 will be pumped into the radiator 403 through the output pipe 402. When the radiator 403 is turned on, the heat in the heat dissipation medium can be dissipated in time. At the same time, under the action of the delivery pump 404, the heat dissipation medium in the radiator 403 will enter the input box 105 through the input pipe 401 for circulation.

[0072] Please refer to Figures 1 to 9 In one embodiment of the present application, the radiator 403 includes a serpentine heat exchange tube 405, to which a plurality of annularly evenly distributed first heat sinks 406 are fixedly connected, and a fan 407 electrically connected to the automatic control component 500 is installed on the first heat sink 406. The operation of the fan 407 can be automatically controlled by the automatic control component 500, and when the fan 407 is in operation, the heat on the first heat sink 406 is dissipated through the air, thereby cooling and dissipating the heat exchange tube.

[0073] Please refer to Figures 1 to 9In one embodiment of the present application, the input box 105 is detachably sealed and connected to an input box cover 107 at one end away from the battery mounting frame 100, the output box 106 is detachably sealed and connected to an output box cover 108 at one end away from the battery mounting frame 100, a flange 109 is provided at one end of the heat dissipation pipe 104 close to the output box 106, a locking nut 110 is provided at one end of the heat dissipation pipe 104 close to the input box 105, a second internal thread 111 is provided inside the locking nut 110, and a second external thread 112 is provided on the heat dissipation pipe 104 for the second internal thread 111.

[0074] The input box 105 , the output box 106 and the battery mounting rack 100 can be conveniently and reliably locked together by using the locking nut 110 and the flange 109 . The input box cover 107 and the output box cover 108 can conveniently seal the input box 105 and the output box 106 .

[0075] Please refer to Figures 1 to 9 In one embodiment of the present application, a plurality of evenly distributed second heat sinks 113 are provided on one side of the output box cover 108 away from the output box 106, an outer shell 114 is fixedly mounted on the battery mounting frame 100, and an air inlet 115 is symmetrically provided on the side of the outer shell 114 near the top thereof corresponding to the second heat sink 113, and a slope 116 is provided at the position of the second heat sink 113 near the air inlet 115, an air outlet 117 is provided at the bottom of the outer shell 114 corresponding to the fan 407, and a panel 118 is detachably sealed and mounted on the outer shell 114.

[0076] In the course of work, Figure 3 As shown by the arrow in , after the fan 407 is started, it can draw the external air from the air inlet 115 into the outer shell 114, and then discharge it from the air outlet 117 through the second heat sink 113 and the circulating heat dissipation component 400. In this process, the fan 407 can not only directly cool the circulating heat dissipation component 400, but also use the second heat sink 113 to assist in heat dissipation of the output box 106 and the heat dissipation medium inside. In addition, since the air inlet 115 is opened on the side of the outer shell 114, when the fan 407 is not started, the natural wind can also be used to dissipate the natural wind power of the second heat sink 113, further improving the heat dissipation effect.

[0077] Please refer to Figures 1 to 9In one embodiment of the present application, the automatic control component 500 includes a first connecting tube 501 and a second connecting tube 502, the first connecting tube 501 is fixedly and sealedly connected to the input box 105, the second connecting tube 502 is fixedly and sealedly connected to the output box 106, a pressure tube 503 is sealed and fixedly connected between the first connecting tube 501 and the second connecting tube 502, the inside of the pressure tube 503 is sealed and slidably connected to a sliding column 504, a slide groove 505 is provided on the side wall of the pressure tube 503, a push plate 506 that is limited to slide inside the slide groove 505 is fixedly connected to the sliding column 504, the outside of the pressure tube 503 is fixedly connected to a box body 507, a control switch 508 electrically connected to the circulation and heat dissipation component 400 is provided inside the box body 507, the control switch 508 is electrically connected to the delivery pump 404 and the fan 407, and the control switch 508 is in contact with the push plate 506. One end of the push plate 506 away from the control switch 508 is fixedly connected to the second spring 509 , and one end of the second spring 509 away from the push plate 506 is fixedly connected to the box body 507 .

[0078] During operation, the pressure tube 503 can be used to directly monitor the pressure changes inside the input box 105 and the output box 106 .

[0079] When all valve assemblies 200 are closed, the circulating heat dissipation assembly 400 continues to input the heat dissipation medium into the input box 105, the pressure inside the input box 105 will increase, and the heat dissipation medium will push the sliding column 504 to slide in the direction away from the control switch 508 through the first connecting pipe 501. When the sliding column 504 drives the push plate 506 to leave the control switch 508, the control switch 508 will automatically control the circulating heat dissipation assembly 400 to stop.

[0080] When any valve assembly 200 is opened, the pressure inside the input box 105 will stop acting on the sliding column 504, and the second spring 509 will push the sliding column 504 in the opposite direction to slide in the direction close to the control switch 508. When the sliding column 504 drives the push plate 506 to abut against the control switch 508 again, the control switch 508 will automatically control the circulation heat dissipation assembly 400 to open.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat dissipation device for an energy storage device, characterized in that: The invention comprises a battery mounting frame (100), wherein a plurality of battery mounting cavities (101) and heat dissipation cavities (102) are provided in the battery mounting frame (100) and are evenly spaced and densely distributed. A storage battery (103) is installed in the battery mounting cavity (101), and a heat dissipation pipe (104) is installed in the heat dissipation cavity (102). An input box (105) and an output box (106) for accommodating heat dissipation medium are respectively arranged at the outer ends of the battery mounting frame (100) corresponding to the two ends of the heat dissipation pipe (104). A valve assembly (200) and a temperature drive assembly (300) are arranged in the interior of each heat dissipation pipe (104). The valve assembly (200) and the temperature drive assembly (300) are transmission-connected. A circulating heat dissipation assembly (400) is arranged between the input box (105) and the output box (106). The input box (105) An automatic control component (500) electrically connected to the circulating heat dissipation component (400) is also provided between the valve assembly (200) and the output box (106); the valve assembly (200) comprises a valve sleeve (201); the outer side surface of the valve sleeve (201) is provided with a first external thread (202); the interior of the heat dissipation pipe (104) is provided with a first internal thread (203) corresponding to the first external thread (202); the valve sleeve (201) is sealed and connected to the interior of the heat dissipation pipe (104) via the first external thread (202) and the first internal thread (203) in an adjustable position; the inner side surface of the valve sleeve (201) is configured as a smooth cylindrical surface (204); the interior of the valve sleeve (201) is sealed and slidably connected with a piston valve (205); and the piston valve (205) is drivingly connected to the temperature drive component (300).

2. The heat dissipation device of an energy storage device according to claim 1, characterized in that: One end of the piston valve (205) away from the temperature drive component (300) is fixedly connected to a first spring (206), and one end of the first spring (206) away from the piston valve (205) is rotatably connected to a baffle frame (207), and a fourth external thread (208) is provided at the outer end of the baffle frame (207), and the baffle frame (207) is threadedly connected to the first internal thread (203) and the heat dissipation pipe (104) via the fourth external thread (208).

3. The heat dissipation device of an energy storage device according to claim 1, characterized in that: The temperature driving component (300) comprises a piston cylinder (301) fixedly connected to the inside of the heat dissipation pipe (104); a piston body (302) is sealingly and slidably connected to the inside of the piston cylinder (301); a piston rod (303) is fixedly connected to the piston body (302); the piston rod (303) seals and slidably passes through one end of the piston cylinder (301); the piston rod (303) is correspondingly connected to the valve assembly (200) in a transmission manner; and a space inside the piston cylinder (301) located at one end of the piston body (302) away from the piston rod (303) is filled with a thermosensitive medium.

4. The heat dissipation device of the energy storage device according to claim 3, characterized in that: The piston cylinder (301) is fixedly connected to a flow guide cover (304) on the outside, and the end of the flow guide cover (304) facing the input box (105) is set as a tapered end. The end of the flow guide cover (304) facing the output box (106) is fixedly connected to at least two connection blocks (305), the inner end of the connection block (305) is connected to the piston cylinder (301), and the outer end of the connection block (305) is connected to the heat dissipation pipe (104), and gaps are set between the flow guide cover (304) and the piston cylinder (301) and the heat dissipation pipe (104).

5. The heat dissipation device of an energy storage device according to claim 1, characterized in that: The circulating heat dissipation component (400) comprises an input pipe (401) and an output pipe (402); the input pipe (401) is fixedly and sealedly connected to the input box (105); the output pipe (402) is fixedly and sealedly connected to the output box (106); one end of the input pipe (401) away from the input box (105) is fixedly and sealedly connected to a radiator (403); one end of the output pipe (402) away from the output box (106) is fixedly and sealedly connected to a delivery pump (404); the delivery pump (404) is sealedly and fixedly connected to the radiator (403); and both the delivery pump (404) and the radiator (403) are electrically connected to the automatic control component (500).

6. The heat dissipation device of an energy storage device according to claim 1, characterized in that: The automatic control component (500) comprises a first connecting pipe (501) and a second connecting pipe (502), wherein the first connecting pipe (501) is fixedly and sealedly connected to the input box (105), and the second connecting pipe (502) is fixedly and sealedly connected to the output box (106); a pressure pipe (503) is sealedly and fixedly connected between the first connecting pipe (501) and the second connecting pipe (502); a sliding column (504) is sealingly and slidably connected inside the pressure pipe (503); a sliding groove (505) is provided on the side wall of the pressure pipe (503); a push plate (506) is fixedly connected to the sliding column (504) and is slidably restricted inside the sliding groove (505); a box body (507) is fixedly connected to the outside of the pressure pipe (503); a control switch (508) electrically connected to the circulating heat dissipation component (400) is provided inside the box body (507), and the control switch (508) is in contact with the push plate (506).

7. A heat dissipation device for energy storage equipment according to claim 6, characterized in that: One end of the push plate (506) away from the control switch (508) is fixedly connected to a second spring (509), and one end of the second spring (509) away from the push plate (506) is fixedly connected to the box body (507).

8. A heat dissipation device for energy storage equipment according to any one of claims 1 to 7, characterized in that: An input box cover (107) is detachably sealed and connected to one end of the input box (105) away from the battery mounting frame (100); an output box cover (108) is detachably sealed and connected to one end of the output box (106) away from the battery mounting frame (100); a flange (109) is provided at one end of the heat dissipation pipe (104) close to the output box (106); a locking nut (110) is provided at one end of the heat dissipation pipe (104) close to the input box (105); a second internal thread (111) is provided inside the locking nut (110); and a second external thread (112) is provided on the heat dissipation pipe (104) in correspondence with the second internal thread (111).

9. A heat dissipation device for energy storage equipment according to claim 8, characterized in that: A second heat sink (113) is provided on a side of the output box cover (108) away from the output box (106).

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