Liquid cooling assembly and energy storage device

Abstract

The invention discloses a liquid cooling assembly and an energy storage device, relates to the technical field of energy storage, and aims to solve the problem of poor cooling effect of a liquid cooling assembly in the prior art. The liquid cooling assembly comprises a first pipeline main body, the first pipeline main body comprises a first liquid inlet pipe, a first liquid discharge pipe and at least one first connecting pipe, and the first liquid inlet pipe is located above the first liquid discharge pipe. And at least one first connecting pipe is connected between the first liquid inlet pipe and the first liquid discharge pipe. The liquid cooling assembly can be used for refrigeration and cooling.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a liquid cooling component and an energy storage device. Background Art

[0002] An energy storage device is an energy storage device that can store electrical energy and release it when needed, providing stable power support for various energy systems. An energy storage device contains large-capacity batteries and a corresponding control system. When the batteries in the energy storage device store and release energy, they generate a large amount of heat. High temperatures have a permanent impact on the battery, shortening its service life, accelerating battery aging, and posing a safety hazard.

[0003] In the related art, the energy storage device dissipates heat through liquid cooling, but the cooling effect of the liquid cooling component is poor. Summary of the Invention

[0004] The present application provides a liquid cooling assembly and an energy storage device, which are used to solve the problem of poor cooling effect of the liquid cooling assembly in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, embodiments of the present application provide a liquid cooling assembly comprising a first pipe body, the first pipe body comprising a first liquid inlet pipe, a first liquid discharge pipe, and at least one first connecting pipe, wherein the first liquid inlet pipe is located above the first liquid discharge pipe. The at least one first connecting pipe is connected between the first liquid inlet pipe and the first liquid discharge pipe.

[0007] The first liquid inlet pipe of the first pipeline body of the present application is arranged above the first liquid outlet pipe. That is, when the liquid cooling assembly of the present application is in operation, the first liquid inlet pipe is located above the first liquid outlet pipe, and the coolant can flow within the system by gravity. This can reduce the demand for pumps and lower the power consumption of the liquid cooling assembly. In addition, it can also reduce the return resistance of the coolant, allowing the coolant to flow more smoothly within the liquid cooling pipeline, improving the overall operating efficiency of the liquid cooling assembly, and thus improving the cooling effect of the liquid cooling assembly.

[0008] In some embodiments, the liquid cooling assembly further includes a liquid cooling pipeline and a first exhaust valve. The liquid cooling pipeline includes a liquid inlet section, a liquid outlet section, and a first pipeline body connected between the liquid inlet and liquid outlet sections. A first liquid inlet pipe is connected to the liquid inlet section, and a first liquid outlet pipe is connected to the liquid outlet section. The first exhaust valve is disposed on the first liquid inlet pipe.

[0009] In some embodiments, the first liquid inlet pipe includes a first pipe section and a second pipe section, and along the vertical direction, the distance from the second pipe section to the first liquid discharge pipe is smaller than the distance from the first pipe section to the first liquid discharge pipe. The first exhaust valve is disposed on the second pipe section.

[0010] In some embodiments, at least one first connecting pipe is connected between the first pipe section and the first liquid discharge pipe, and the second pipe section is located between the first pipe section and the liquid inlet section.

[0011] In some embodiments, the first connecting pipe includes: a first connecting pipe group and a second connecting pipe group. The first connecting pipe group includes multiple parallel battery cooling pipes, the inlet of the first connecting pipe group being connected to the first pipe segment. The second connecting pipe group includes multiple parallel controller cooling pipes, the inlet of the second connecting pipe group being connected to the outlet of the first connecting pipe group, and the outlet of the second connecting pipe group being connected to the first drain pipe.

[0012] In some embodiments, the inner diameters of the liquid inlet section and the liquid outlet section are larger than the inner diameters of the first liquid inlet pipe and the first liquid discharge pipe, and the inner diameters of the first liquid inlet pipe and the first liquid discharge pipe are larger than the inner diameter of the first connecting pipe.

[0013] In some embodiments, the first pipe segment and the second pipe segment are connected through a flexible pipe.

[0014] In some embodiments, the liquid inlet section and the liquid outlet section are made of metal, the first liquid inlet pipe and the first liquid discharge pipe are made of metal, and the first connecting pipe is made of non-metal.

[0015] In some embodiments, the first connecting pipe includes a flexible pipe and a straight pipe, and the flexible pipe is disposed at a connection between adjacent straight pipes.

[0016] In some embodiments, the flexible tube is a bellows.

[0017] In some embodiments, the first connecting pipe is provided with a liquid drain port. The liquid cooling assembly further comprises a liquid drain pipe connected to the liquid drain port.

[0018] In some embodiments, the liquid cooling circuit further includes a plurality of control valves, which are arranged at the inlet of the first liquid inlet pipe and the outlet of the first liquid outlet pipe, and / or, the plurality of control valves are arranged at the inlet and outlet of the first connecting pipe.

[0019] In some embodiments, the control valve includes a valve body, a first flange clamp disposed at an inlet end of the valve body, and a second flange clamp disposed at an outlet end of the valve body.

[0020] In some embodiments, the liquid cooling pipeline further includes a second pipeline body connected between the liquid inlet section and the liquid outlet section and a second exhaust valve, wherein the second exhaust valve is disposed on the second pipeline body.

[0021] In a second aspect, an embodiment of the present application provides an energy storage device comprising at least one housing, a plurality of battery cells, and the aforementioned liquid cooling assembly. The plurality of battery cells are located within the housing, and the liquid cooling assembly is located within the housing.

[0022] In some embodiments, the liquid cooling assembly includes a first connecting pipe, the battery unit includes a plurality of battery cell assemblies, an energy storage converter, and a battery management system, and the battery unit is connected to the first connecting pipe.

[0023] In some embodiments, the first connecting pipe includes a first connecting pipe group and a second connecting pipe group. The first connecting pipe group includes multiple parallel battery cooling pipes, and the second connecting pipe group includes multiple parallel controller cooling pipes. The inlet of the second connecting pipe group is connected to the outlet of the first connecting pipe group. Multiple battery cell assemblies are connected to the battery cooling pipes, and the energy storage converter and battery management system are connected to the controller cooling pipes.

[0024] In some embodiments, the housing includes at least one battery compartment and a cooling compartment, with the battery cells located within the battery compartment. The liquid cooling assembly includes liquid cooling pipes located within the cooling compartment and the battery compartment. Through holes are provided between adjacent battery compartments and cooling compartments. The energy storage device also includes a through-hole connector located within the through hole and connected to the liquid cooling pipe.

[0025] In some embodiments, the wall joint includes a joint body and a waterproof structure, and the waterproof structure is sealed at the through hole.

[0026] The technical effects brought about by any implementation method of the above-mentioned second aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the energy storage device in the embodiment of the present application;

[0028] Figure 2 This is a schematic structural diagram of the liquid cooling assembly in an embodiment of the present application;

[0029] Figure 3 For this application Figure 2 Front view of the liquid cooling assembly;

[0030] Figure 4 For this application Figure 2 A schematic structural diagram of the first connecting pipe;

[0031] Figure 5 This is a schematic structural diagram of a flexible tube in an embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the structure of the connection between the various pipe sections of the first liquid inlet pipe in the embodiment of the present application;

[0033] Figure 7 This is a schematic structural diagram of the connection between the first connecting tube and the battery unit in an embodiment of the present application;

[0034] Figure 8 This is a structural diagram of the connection between the first liquid inlet pipe and the first connecting pipe in an embodiment of the present application;

[0035] Figure 9 This is a schematic diagram of the structure of the control valve in the embodiment of the present application;

[0036] Figure 10 This is a schematic structural diagram of the first pipeline body and the second pipeline body in an embodiment of the present application;

[0037] Figure 11 This is a structural diagram of the connection between the first liquid inlet pipe, the second liquid inlet pipe and the liquid inlet section in an embodiment of the present application;

[0038] Figure 12 This is a simulation diagram of the liquid cooling system of an embodiment of the present application.

[0039] Reference numerals:

[0040] 100, energy storage device; 10, housing; 11, battery compartment; 12, cooling compartment; 13, through hole; 20, battery cell; 30, liquid cooling assembly; 40, liquid cooling pipeline; 41, liquid inlet section; 42, liquid outlet section; 43, first pipeline body; 431, first liquid inlet pipe; 4311, first pipe section; 4312, second pipe section; 4313, flexible pipe; 432, first liquid discharge pipe; 433, first connecting pipe; 4331, liquid discharge port; 434, first connecting pipe Pipe group; 435, battery cooling pipeline; 436, second connecting pipe group; 437, controller cooling pipeline; 438, flexible pipe; 439, straight pipe; 44, drain pipe; 45, control valve; 451, valve body; 452, first flange clamp; 453, second flange clamp; 454, flange plate; 455, flange gasket; 46, second pipeline body; 47, second exhaust valve; 48, reducing tee pipeline; 50, first exhaust valve; 60, wall joint. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0044] In the description of the present invention, 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 directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0045] It should be noted that, in actual applications, due to the limitations of equipment precision or installation errors, absolute parallel or perpendicular effects are difficult to achieve. The description of "perpendicular", "parallel" or "same direction" in this application is not an absolute limiting condition, but rather indicates that a vertical or parallel structural setting can be achieved within a preset error range and the corresponding preset effect can be achieved. In this way, the technical effect of the defined feature can be maximized, and the corresponding technical solution is easy to implement, with high feasibility. For example, "perpendicular" includes absolute vertical and approximate vertical, wherein the acceptable deviation range of approximate vertical can also be, for example, a deviation within 5°. "Parallel" includes absolute parallel and approximate parallel, wherein the acceptable deviation range of approximate parallel can also be, for example, a deviation within 5°. "Same direction" includes absolute same direction and approximate same direction, wherein the acceptable deviation range of approximate same direction can also be, for example, a deviation within 5°.

[0046] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0047] An energy storage device is an energy storage device that can store electrical energy and release it when needed, providing stable power support for various energy systems. The energy storage device is equipped with a large-capacity battery and a corresponding control system. When the battery in the energy storage device is storing and releasing energy, the battery will generate a lot of heat. The impact of high temperature on the battery is permanent and will shorten the battery's service life. It will accelerate the aging of the battery. If the temperature is too high, the battery may also catch fire and explode. Therefore, general energy storage devices are equipped with heat dissipation devices.

[0048] In related technologies, energy storage devices dissipate heat through both air cooling and liquid cooling. Air cooling requires fans to generate strong airflow, resulting in relatively high noise levels. Furthermore, air cooling reduces device temperature by cooling the air, so its effectiveness is significantly affected by ambient temperature. Liquid cooling systems conduct and dissipate heat more efficiently than air cooling systems. The high heat capacity of liquids helps quickly remove heat generated by the energy storage device, thereby maintaining it within a safe operating temperature range.

[0049] However, the cooling effect of the liquid cooling component is poor.

[0050] Based on this, the present application provides an energy storage device 100 for solving the above-mentioned problems. The energy storage device 100 can be an energy storage container, a mobile energy storage unit, a mobile power supply vehicle, etc. The present application does not impose any restrictions on this, and the specific configuration can be made according to the actual needs.

[0051] For example, the present application takes the energy storage device 100 as an energy storage container as an example for description.

[0052] Specifically, such as Figure 1 As shown, Figure 1 Schematic diagram of the structure of the energy storage device in an embodiment of the present application, the energy storage device 100 includes at least one housing 10, a plurality of battery cells 20, and a liquid cooling assembly 30. The plurality of battery cells 20 are located in the housing 10, and the liquid cooling assembly 30 is located in the housing 10.

[0053] In this way, the housing 10 protects the battery cells 20 and liquid cooling assembly 30 from external environmental influences, such as wind, rain, and temperature fluctuations, thereby improving the safety and durability of the energy storage device 100. Furthermore, the housing 10 itself is a standardized transport unit, facilitating transportation by land, sea, or air. Integrating the battery cells 20 and liquid cooling assembly 30 within the housing 10 allows for rapid deployment and centralized management, particularly in temporary or emergency power situations.

[0054] It is understood that the housing 10 can be expanded or reduced as needed, thereby adding or removing battery cells 20 and liquid cooling components 30, which provides good flexibility and adaptability. This modular design allows capacity to be adjusted according to actual needs to meet the requirements of different application scenarios.

[0055] It should be noted that the present application does not limit the number of shells 10, and the number is set according to actual needs.

[0056] For example, the present application is described by taking the case where there are two shells 10 as an example.

[0057] Specifically, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of the liquid cooling assembly in an embodiment of the present application. In some embodiments, the first pipeline body 43 includes a first liquid inlet pipe 431, a first liquid discharge pipe 432, and at least one first connecting pipe 433. The first liquid inlet pipe 431 is located above the first liquid discharge pipe 432. The at least one first connecting pipe 433 is connected between the first liquid inlet pipe 431 and the first liquid discharge pipe 432.

[0058] The first liquid inlet pipe 431 of the first pipeline body 43 of the present application is arranged above the first liquid discharge pipe 432. That is, when the liquid cooling assembly 30 of the present application is in operation, the first liquid inlet pipe 431 is located above the first liquid discharge pipe 432, and the coolant can flow within the system by gravity. This can reduce the demand for pumps and lower the power consumption of the liquid cooling assembly 30. In addition, the return resistance of the coolant can be reduced, allowing the coolant to flow more smoothly within the liquid cooling pipeline 40, thereby improving the overall operating efficiency of the liquid cooling assembly 30 and further improving the cooling effect of the liquid cooling assembly 30.

[0059] It can be understood that the first liquid inlet pipe 431 being located above the first liquid discharge pipe 432 means that when the liquid cooling assembly 30 is running, along the direction of gravity, the height of the first liquid inlet pipe 431 above the ground is greater than the height of the first liquid discharge pipe 432 above the ground.

[0060] In some embodiments, the liquid cooling assembly 30 includes a liquid cooling circuit 40 and a first exhaust valve 50. The liquid cooling circuit 40 includes a liquid inlet section 41, a liquid outlet section 42, and a first circuit body 43 connected between the liquid inlet section 41 and the liquid outlet section 42. A first liquid inlet pipe 431 is connected to the liquid inlet section 41, and a first liquid outlet pipe 432 is connected to the liquid outlet section 42. The first exhaust valve 50 is provided on the first liquid inlet pipe 431.

[0061] Thus, the first exhaust valve 50, located on the first liquid inlet pipe 431, can quickly and effectively exhaust the gas within the first liquid inlet pipe 431, preventing air blockage in the pipe. This improves the efficiency of coolant delivery and protects the pipe from deformation or rupture. Furthermore, when the system is shut down, the first exhaust valve 50 prevents negative pressure from causing pipe vibration. If negative pressure occurs in the pipe, the first exhaust valve 50 quickly draws in air, preventing damage to the pipe due to the negative pressure.

[0062] In some embodiments, as Figure 3 As shown, Figure 3 For this application Figure 2 A front view of the liquid cooling assembly shows that the first liquid inlet pipe 431 includes a first pipe section 4311 and a second pipe section 4312. Vertically, the distance from the second pipe section 4312 to the first liquid discharge pipe 432 is shorter than the distance from the first pipe section 4311 to the first liquid discharge pipe 432. The first exhaust valve 50 is located in the second pipe section 4312.

[0063] As a result, because the distance from the second pipe section 4312 to the first liquid drain pipe 432 is shorter than the distance from the first pipe section 4311 to the first liquid drain pipe 432, the first exhaust valve 50 is disposed in the second pipe section 4312, so that the height of the first exhaust valve 50 does not exceed that of the first pipe section 4311. This ensures that the height of the first exhaust valve 50 does not protrude beyond the liquid cooling assembly 30, facilitating stacking and transportation of the liquid cooling assembly 30.

[0064] It can be understood that the vertical direction is the direction of gravity when the liquid cooling assembly 30 is in operation.

[0065] Exemplarily, the first exhaust valve 50 is disposed on a side of the second pipe section 4312 away from the first liquid discharge pipe 432. Since the density of air is less than that of liquid, such an arrangement is more convenient for exhausting or intake of air.

[0066] In some embodiments, see Figure 3 The first pipe section 4311 and the second pipe section 4312 are connected through a flexible pipe 4313.

[0067] Thus, the use of flexible pipe 4313 effectively reduces stress concentration at the pipe joint, thereby reducing fatigue damage caused by repeated cyclic loading. Flexible pipe 4313 also effectively absorbs vibration and shock generated by coolant flow or equipment operation, reducing damage to the piping system and equipment. Furthermore, it can also improve the sealing problem caused by assembly tolerances caused by the rigid connection between the first pipe segment 4311 and the second pipe segment 4312.

[0068] Exemplarily, the flexible pipe 4313 may be a metal braided flexible pipe or a composite material flexible pipe.

[0069] In some embodiments, at least one first connecting pipe 433 is connected between the first pipe section 4311 and the first liquid discharge pipe 432 , and the second pipe section 4312 is located between the first pipe section 4311 and the liquid inlet section 41 .

[0070] In this way, through such an arrangement, the first exhaust valve 50 can be arranged before the first connecting pipe 433, and the coolant can pass through the first exhaust valve 50 before entering the first connecting pipe 433 to discharge any air that may be present in the coolant, thereby improving the reliability and safety of the liquid cooling pipeline 40.

[0071] In some embodiments, as Figure 2 as well as Figure 4 As shown, Figure 4 For this application Figure 2 Schematic diagram of the structure of the first connecting pipe, first connecting pipe 433 includes: a first connecting pipe group 434 and a second connecting pipe group 436. First connecting pipe group 434 includes multiple parallel battery cooling pipes 435, the inlet of which is connected to the first pipe section 4311. Second connecting pipe group 436 includes multiple parallel controller cooling pipes 437, the inlet of which is connected to the outlet of first connecting pipe group 434, and the outlet of which is connected to the first drain pipe 432.

[0072] In this way, the coolant first flows into the multiple parallel battery cooling pipes 435 of the first connecting pipe group 434, then flows into the second connecting pipe group 436, and then flows again into the multiple parallel controller cooling pipes 437 of the second connecting pipe group 436. In this way, the coolant can first cool the relatively high-temperature battery cell components, which can quickly reduce the temperature of the battery unit 20.

[0073] Illustratively, there are two battery cooling lines 435 and three controller cooling lines 437 .

[0074] In some other embodiments, the first connecting pipe 433 includes a first connecting pipe group 434 and a second connecting pipe group 436 connected in parallel.

[0075] In some embodiments, the first connecting tube 433 includes a flexible tube 438 and a straight tube 439 , and the flexible tube 438 is disposed at a connection between adjacent straight tubes 439 .

[0076] In this way, the flexible tube 438 can effectively absorb vibration and impact, reducing stress caused by coolant pulsation or vibration of the liquid cooling assembly 30, thereby protecting the straight tube 439 and the connection points, and extending the service life of the system. In addition, the use of straight tube 439 can reduce the flow resistance of the coolant.

[0077] In some embodiments, as Figure 5 As shown, Figure 5 This is a schematic diagram of the structure of the flexible tube in an embodiment of the present application, where the flexible tube 438 is a corrugated tube.

[0078] In this way, the bending ability of the corrugated pipe makes installation more convenient and can adapt to different installation spaces and angles without the need for complicated accessories and connectors.

[0079] In other embodiments, the flexible tube 438 may be an irregularly corrugated tube.

[0080] In some embodiments, see again Figure 4 The first connecting pipe 433 is provided with a drain port 4331 . The liquid cooling assembly 30 further includes a drain pipe 44 , which is connected to the drain port 4331 .

[0081] In this way, when the liquid cooling pipeline 40 needs to be drained, it is only necessary to insert the drain pipe 44 into the drain port 4331 and turn on the switch of the drain pipe 44 to realize the drain function.

[0082] In some embodiments, the inner diameters of the liquid inlet section 41 and the liquid outlet section 42 are larger than the inner diameters of the first liquid inlet pipe 431 and the first liquid discharge pipe 432 , and the inner diameters of the first liquid inlet pipe 431 and the first liquid discharge pipe 432 are larger than the inner diameter of the first connecting pipe 433 .

[0083] It should be noted that the inner diameters of the liquid inlet section 41 and the liquid outlet section 42 are respectively larger than the inner diameter of the first liquid inlet pipe 431, the inner diameters of the liquid inlet section 41 and the liquid outlet section 42 are respectively larger than the inner diameter of the first liquid discharge pipe 432, and the inner diameters of the first liquid inlet pipe 431 and the first liquid discharge pipe 432 are respectively larger than the inner diameter of the first connecting pipe 433.

[0084] This ensures a more even distribution of the coolant within the cooling system. Furthermore, by making the inner diameters of the liquid inlet section 41 and the liquid outlet section 42 larger than those of the first liquid inlet pipe 431 and the first liquid outlet pipe 432, and the inner diameters of the first liquid inlet pipe 431 and the first liquid outlet pipe 432 larger than those of the first connecting pipe 433, the coolant flow rate can be effectively regulated. When the coolant passes through a smaller pipe diameter, the flow rate increases, improving the cooling effect. Meanwhile, in larger pipe diameters, the flow rate decreases, helping to reduce noise and flow resistance.

[0085] In some embodiments, the liquid inlet section 41 and the liquid outlet section 42 are made of metal, the first liquid inlet pipe 431 and the first liquid discharge pipe 432 are made of metal, and the first connecting pipe 433 is made of non-metal.

[0086] Metal materials typically have high temperature and pressure resistance and are suitable for the liquid inlet section 41, liquid outlet section 42, first liquid inlet pipe 431, and first liquid outlet pipe 432, ensuring the stability of the liquid cooling assembly 30. Plastic is used for the first connecting pipe 433, facilitating connection and providing a certain degree of shock absorption and vibration reduction, effectively alleviating stress caused by vibration during system operation. The flexibility of the plastic connecting pipe also facilitates installation.

[0087] For example, the material of the metal pipe can be galvanized steel, stainless steel, plastic-coated steel, copper, etc. The material of the non-metallic pipe can be ABS plastic, polyethylene, polypropylene, rubber, etc.

[0088] like Figure 6 As shown, Figure 6 The schematic diagram of the structure of the connection between the various pipe sections of the first liquid inlet pipe in the embodiment of the present application is as follows: the connection between the various pipe sections of the first liquid inlet pipe 431 can be connected by a flange clamp; similarly, the connection between the various pipe sections of the first liquid discharge pipe 432 can be connected by a flange clamp. Figure 7 As shown, Figure 7 This is a structural diagram of the connection between the first connecting tube and the battery unit in the embodiment of the present application. The surface of the connecting pipe of the battery unit 20 is provided with a connecting protrusion, and the inner side of the pipe mouth of the first connecting tube 433 is provided with a connecting recess that matches it. The first connecting tube 433 can be directly connected to the connecting pipe of the battery unit 20. Figure 8 As shown, Figure 8 This is a schematic diagram of the structure of the connection between the first liquid inlet pipe and the first connecting pipe in an embodiment of the present application. The first liquid inlet pipe 431 and the first connecting pipe 433 are connected via a clamping member. One end of the clamping member extends into the first liquid inlet pipe 431, and the other end is clamped to the first connecting pipe 433. Similarly, the first liquid discharge pipe 432 can also be connected to the first connecting pipe 433 in this manner.

[0089] In some embodiments, as Figure 2As shown, the liquid cooling pipeline 40 further includes a plurality of control valves 45 , which are arranged at the inlet of the first liquid inlet pipe 431 and the outlet of the first liquid outlet pipe.

[0090] In this way, the plurality of control valves 45 allow for precise regulation of the flow of the coolant, and the flow rate of the coolant can be adjusted as required, thereby optimizing the cooling efficiency.

[0091] In some other embodiments, the liquid cooling circuit 40 further includes a plurality of control valves 45 , which are disposed at the inlet and outlet of the first connecting pipe 433 .

[0092] In this way, the multiple control valves 45 allow the flow of the coolant to be precisely regulated, and the flow rate of the coolant entering the battery cell 20 can be adjusted as needed, thereby optimizing the cooling efficiency.

[0093] In some embodiments, as Figure 9 As shown, Figure 9 This is a structural diagram of the control valve in an embodiment of the present application. The control valve 45 includes a valve body 451 and a first flange clamp 452 arranged at the inlet end of the valve body 451, and a second flange clamp 453 arranged at the outlet end of the valve body 451.

[0094] In this way, the control valve 45 can be quickly disassembled and sealed through the flange clamp, which facilitates the installation, disassembly and maintenance of the entire liquid cooling pipeline 40.

[0095] Specifically, the first flange clamp 452 includes two flange plates 454 and a flange gasket 455 , and the two flange plates 454 quickly clamp and tighten the flange gasket to achieve sealing.

[0096] In some embodiments, as Figure 10 As shown, Figure 10 Schematic diagram of the structure of the first pipeline body and the second pipeline body in the embodiment of the present application, the liquid cooling pipeline 40 also includes a second pipeline body 46 connected between the liquid inlet section 41 and the liquid outlet section 42 and a second exhaust valve 47. The second exhaust valve 47 is provided on the second pipeline body 46.

[0097] In this way, the second pipe body 46 and the first pipe body 43 are connected in parallel between the liquid inlet section 41 and the liquid outlet section 42 , so as to cool the battery cells 20 in the two housings 10 .

[0098] It should be noted that the layout of the second pipeline body 46 is consistent with that of the first pipeline body 43 .

[0099] like Figure 11 As shown, Figure 11This is a schematic diagram of the structure of the connection between the first and second liquid inlet pipes and the liquid inlet section of the embodiment of the present application. The first and second liquid inlet pipes 431 and 432 are connected to the liquid inlet section 41 via a reducing tee pipe 48. Similarly, the first and second liquid discharge pipes 432 and 432 are connected to the liquid discharge section 42 via a special-shaped reducing tee pipe 48.

[0100] In some other embodiments, the liquid cooling pipeline 40 further includes a third pipeline body and a third exhaust valve connected between the liquid inlet section 41 and the liquid outlet section 42 .

[0101] In some embodiments, the battery unit 20 includes a plurality of battery cell assemblies, an energy storage converter, and a battery management system. The battery unit 20 is connected to the first connecting pipe 433 .

[0102] In this way, the heat generated by the battery cell 20 can be transferred to the coolant through the first connecting pipe 433, which can quickly reduce the battery temperature and ensure that the battery operates within the optimal operating temperature range.

[0103] In some embodiments, first connecting pipe 433 includes a first connecting pipe group 434 and a second connecting pipe group 436. First connecting pipe group 434 includes multiple parallel battery cooling pipes 435. Second connecting pipe group 436 includes multiple parallel controller cooling pipes 437. The inlet of second connecting pipe group 436 is connected to the outlet of first connecting pipe group 434. Multiple battery cell assemblies are connected to battery cooling pipes 435, and a power conversion system (PCS) and a battery management system (BMS) are connected to controller cooling pipes 437.

[0104] In this way, the coolant is first diverted into the multiple parallel battery cooling pipes 435 of the first connecting pipe group 434 to cool the battery cell components. After the battery cell components are cooled, the coolant converges to the second connecting pipe group 436 and is again diverted into the multiple parallel controller cooling pipes 437 of the second connecting pipe group 436 to cool the energy storage converter and battery management system. In this way, the coolant can first cool the relatively hot battery cell components, which can quickly reduce the temperature of the battery unit 20.

[0105] In addition, the arrangement of multiple battery cooling pipes 435 and multiple controller cooling pipes 437 results in a larger coolant flow rate, which is beneficial to improving cooling efficiency.

[0106] In some other embodiments, the first connecting pipe group 434 and the second connecting pipe group 436 may be directly connected in parallel, that is, the plurality of battery cooling pipes 435 and the plurality of controller cooling pipes 437 may be connected in parallel.

[0107] In some embodiments, as Figure 1 As shown, the housing 10 includes at least one battery compartment 11 and a cooling compartment 12 , the battery unit 20 is located in the battery compartment 11 , and the liquid cooling assembly 30 includes a liquid cooling pipeline 40 , which is located in the cooling compartment 12 and the battery compartment 11 .

[0108] In this way, the interior of the housing 10 is modularized, which facilitates future upgrades and maintenance. If the battery unit 20 or the liquid cooling assembly 30 needs to be repaired or replaced, it can be quickly disassembled and replaced, simplifying the maintenance process.

[0109] A through hole 13 is provided between the adjacent battery compartments 11 and cooling compartments 12 . The energy storage device 100 further includes a wall-penetrating joint 60 . The wall-penetrating joint 60 is located at the through hole 13 and is connected to the liquid cooling pipeline 40 .

[0110] Thus, using wall connector 60 to connect liquid cooling pipe 40 simplifies the overall structural design, making installation, maintenance, and repair of energy storage device 100 more convenient, reducing the complexity and time cost of repairs. Furthermore, it avoids complex piping layouts, making energy storage device 100 more compact and adaptable to various installation environments.

[0111] In some embodiments, the wall joint 60 includes a joint body and a waterproof structure, and the waterproof structure is sealed at the through hole 13 .

[0112] In this way, by using a special waterproof structure at the wall joint 60, the sealing performance of the wall joint 60 can be ensured, the penetration of air and moisture can be prevented, and the durability of the equipment can be improved.

[0113] It should be noted that the waterproof structure can be a waterproof gasket, a waterproof board, a sealant, a waterproof tape, etc. This application does not impose any restrictions on this, and it can be set according to the actual needs.

[0114] For example, the present application is described by taking the waterproof structure being a waterproof gasket as an example.

[0115] like Figure 12 As shown, Figure 12 This is a simulation diagram of the liquid cooling system of the embodiment of the present application. The inlet flow rate of the liquid inlet section 41 is set to 396L / min, and the total pressure drop of the system is 113.7KPa. In this way, Figure 12 The simulation results show that the flow uniformity of the liquid cooling system meets the requirements. At the same time, the flow values at the energy storage converter and the battery management system reach the required flow, meeting the cooling needs.

[0116] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprise" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. The fact that certain measures are recorded in different dependent claims does not mean that these measures cannot be combined to produce good results.

[0117] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

[0118] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A liquid cooling component, characterized in that: include: A first pipeline body (43), the first pipeline body (43) comprising a first liquid inlet pipe (431), a first liquid discharge pipe (432) and at least one first connecting pipe (433), wherein the first liquid inlet pipe (431) is located above the first liquid discharge pipe (432); and the at least one first connecting pipe (433) is connected between the first liquid inlet pipe (431) and the first liquid discharge pipe (432).

2. The liquid cooling assembly according to claim 1, wherein: Also includes: A liquid cooling pipeline (40), the liquid cooling pipeline (40) comprising a liquid inlet section (41) and a liquid outlet section (42), and a first pipeline body (43) connected between the liquid inlet section (41) and the liquid outlet section (42); the first liquid inlet pipe (431) is connected to the liquid inlet section (41), and the first liquid outlet pipe (432) is connected to the liquid outlet section (42); A first exhaust valve (50) is provided on the first liquid inlet pipe (431).

3. The liquid cooling assembly according to claim 2, characterized in that The first liquid inlet pipe (431) comprises a first pipe section (4311) and a second pipe section (4312); along the vertical direction, the distance from the second pipe section (4312) to the first liquid discharge pipe (432) is smaller than the distance from the first pipe section (4311) to the first liquid discharge pipe (432); The first exhaust valve (50) is arranged on the second pipe section (4312).

4. The liquid cooling assembly according to claim 3, characterized in that The at least one first connecting pipe (433) is connected between the first pipe section (4311) and the first liquid discharge pipe (432), and the second pipe section (4312) is located between the first pipe section (4311) and the liquid inlet section (41).

5. The liquid cooling assembly according to claim 4, characterized in that The first connecting pipe (433) includes: a first connecting pipe group (434) and a second connecting pipe group (436); The first connecting pipe group (434) includes a plurality of parallel battery cooling pipes (435), and the inlet of the first connecting pipe group (434) is in communication with the first pipe section (4311); The second connecting pipe group (436) includes a plurality of parallel controller cooling pipes (437), the inlet of the second connecting pipe group (436) is connected to the outlet of the first connecting pipe group (434), and the outlet of the second connecting pipe group (436) is connected to the first drain pipe (432).

6. The liquid cooling assembly according to claim 4, characterized in that The inner diameters of the liquid inlet section (41) and the liquid outlet section (42) are greater than the inner diameters of the first liquid inlet pipe (431) and the first liquid discharge pipe (432), and the inner diameters of the first liquid inlet pipe (431) and the first liquid discharge pipe (432) are greater than the inner diameter of the first connecting pipe (433).

7. The liquid cooling assembly according to claim 3, characterized in that The first pipe section (4311) and the second pipe section (4312) are connected via a flexible pipe (4313).

8. The liquid cooling assembly according to any one of claims 1 to 7, characterized in that: The liquid inlet section (41) and the liquid outlet section (42) are made of metal, the first liquid inlet pipe (431) and the first liquid discharge pipe (432) are made of metal, and the first connecting pipe (433) is made of non-metal.

9. The liquid cooling assembly according to claim 8, characterized in that The first connecting pipe (433) includes a flexible pipe (438) and a straight pipe (439), and the flexible pipe (438) is arranged at the connection between adjacent straight pipes (439).

10. The liquid cooling assembly according to claim 9, characterized in that The flexible tube (438) is a corrugated tube.

11. The liquid cooling assembly according to any one of claims 1 to 7, characterized in that: The first connecting pipe (433) is provided with a liquid drain port (4331); the liquid cooling assembly (30) further comprises a liquid drain pipe (44), and the liquid drain pipe (44) is connected to the liquid drain port (4331).

12. The liquid cooling assembly according to claim 11, wherein: The liquid cooling pipeline 40) also includes: A plurality of control valves (45), wherein the plurality of control valves (45) are arranged at the inlet of the first liquid inlet pipe (431) and the outlet of the first liquid discharge pipe (432), and / or the plurality of control valves (45) are arranged at the inlet and outlet of the first connecting pipe (433).

13. The liquid cooling assembly according to claim 12, wherein: The control valve (45) comprises a valve body (451), a first flange clamp (452) arranged at the inlet end of the valve body (451), and a second flange clamp (453) arranged at the outlet end of the valve body (451).

14. The liquid cooling assembly according to claim 2, wherein: The liquid cooling pipeline (40) further comprises: a second pipeline body (46) connected between the liquid inlet section (41) and the liquid outlet section (42); A second exhaust valve (47) is provided on the second pipeline body (46).

15. An energy storage device, characterized in that: include: at least one housing (10); a plurality of battery cells (20), wherein the plurality of battery cells (20) are located in the housing (10); The liquid cooling assembly (30) according to claims 1-14, wherein the liquid cooling assembly (30) is located in the housing (10).

16. The energy storage device according to claim 15, wherein the liquid cooling assembly (30) comprises a first connecting pipe (433), characterized in that: The battery unit (20) includes a plurality of battery core components, an energy storage converter, and a battery management system; The battery unit (20) is connected to the first connecting pipe (433).

17. The energy storage device according to claim 16, wherein the first connecting pipe (433) comprises a first connecting pipe group (434) and a second connecting pipe group (436), the first connecting pipe group (434) comprises a plurality of parallel battery cooling pipes (435), the second connecting pipe group (436) comprises a plurality of parallel controller cooling pipes (437), and the inlet of the second connecting pipe group (436) is connected to the outlet of the first connecting pipe group (434), characterized in that: The plurality of battery core assemblies are connected to the battery cooling pipeline (435), and the energy storage converter and the battery management system are connected to the controller cooling pipeline (437).

18. The energy storage device according to claim 15, characterized in that The housing (10) includes at least one battery compartment (11) and a cooling compartment (12), the battery unit (20) is located in the battery compartment (11), the liquid cooling assembly (30) includes a liquid cooling pipeline (40), and the liquid cooling pipeline (40) is located in the cooling compartment (12) and the battery compartment (11); a through hole (13) is provided between adjacent battery compartments (11) and cooling compartments (12); The energy storage device (100) further comprises a wall-penetrating joint (60), wherein the wall-penetrating joint (60) is located at the through hole (13) and is connected to the liquid cooling pipeline (40).

19. The energy storage device according to claim 18, characterized in that The wall-penetrating joint (60) comprises a joint body and a waterproof structure, and the waterproof structure is sealed at the through hole (13).

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