Liquid cooling energy storage PACK device

Abstract

The utility model relates to a liquid cooling energy storage PACK device which comprises a box body, a plurality of battery modules are arranged in the box body, a supporting plate is arranged on the lower surface of each battery module, and a liquid discharging hole is formed in each supporting plate; a spraying pipe is detachably fixed to the center of the upper surface of each battery module, a plurality of liquid inlets are formed in one end of each spraying pipe and communicate with a liquid inlet pipe, and pipe openings of the liquid inlet pipes are formed in the side wall of the box body; the side wall of the box body is further provided with a liquid outlet pipe, the height of the liquid outlet pipe is lower than the height of the supporting plate and the height of a pipe opening of the liquid inlet pipe, it is ensured that cooling liquid stably flows in the system, and the situation that due to accumulation or unsmooth flowing of the cooling liquid, the cooling performance of the spraying type liquid cooling energy storage PACK device is reduced or breaks down is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module heat dissipation, in particular to a liquid-cooled energy storage PACK device. Background Art

[0002] With growing global awareness of environmental protection and the increasing depletion of traditional energy resources, the new energy storage market has experienced unprecedented rapid growth, leading to a significant increase in the frequency of battery charging and discharging operations. However, the frequent and simultaneous charge and discharge cycles of multiple battery modules cause internal temperatures to rise dramatically, making it difficult to effectively and promptly dissipate the accumulated heat from the system. This phenomenon adversely impacts battery performance in many ways, including, but not limited to, reduced safety, reduced charge and discharge capacity and efficiency, and shortened cycle life.

[0003] Existing technologies, such as Chinese patent publication number CN117936978A, disclose a containerized liquid-cooled energy storage system using a chiller, including a container, wherein a battery module, a water-cooling circulation device, and a fire-fighting device are provided in the inner cavity of the container. The water-cooling circulation device cools the electronic components and battery modules in the inner cavity of the container through a first heat exchanger and a second heat exchanger, and then passes the heat exchanged water into a circulating water inlet pipe. A spray water pump sprays the cooling water onto the cooling coil, thereby cooling the high-temperature cooling water obtained by heat exchange, and improving the heat exchange efficiency through a heat conduction plate. The cooling water after heat exchange is passed into the water-cooling circulation device through a circulating water outlet pipe, thereby improving the heat dissipation efficiency in the container. The use of water-cooling heat dissipation reduces heat dissipation noise, making it suitable for use in areas with high noise requirements. It has higher heat exchange efficiency, can complete more precise adjustment, and has better energy-saving effects.

[0004] The above-mentioned existing technical solution has the following defects: in this technical solution, after the cooling water undergoes preliminary heat exchange through the first and second heat exchangers, it is sprayed on the cooling coil by the spray water pump to further cool it down. However, this design easily causes the coolant that absorbs the heat of the battery module to accumulate at the bottom of the battery module. Long-term water accumulation may not only affect the cooling efficiency, but may also cause problems such as corrosion and microbial growth. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a liquid-cooled energy storage PACK device, which can ensure that the coolant is discharged from the box in time, thereby preventing the coolant from accumulating at the bottom of the battery module after absorbing the heat of the battery module, resulting in a decrease in the cooling efficiency of the battery module.

[0006] The above-mentioned utility model object of the present invention is achieved through the following technical solutions:

[0007] A liquid-cooled energy storage PACK device includes a box body, wherein a plurality of battery modules are arranged in the box body, a liquid inlet pipe and a liquid outlet pipe are provided on the side wall of the box body, and a spray pipe is detachably fixed to the upper surface of each battery module, and a plurality of spray holes are opened at the bottom of the spray pipe;

[0008] One end of each of the spray pipes is provided with a liquid inlet, and a plurality of the liquid inlets are connected to the liquid inlet pipe;

[0009] A support plate is provided at the bottom of the battery module, and a plurality of drainage holes are opened on the support plate. The periphery of the support plate is fixed to the inner wall of the box body, and a cavity is provided between the support plate and the bottom wall of the box body;

[0010] One end of the liquid outlet pipe is communicated with the cavity.

[0011] As a further technical solution of the present invention: a slope is provided between the support plate and the bottom wall of the box body, and the gradient of the slope gradually increases from the end close to the liquid outlet pipe to the end far away from the liquid outlet pipe.

[0012] As a further technical solution of the present invention: the liquid inlet pipe includes a main liquid inlet pipe and a liquid distribution pipe, one end of the main liquid inlet pipe passes through the side wall of the box body, and the other end is connected to the liquid distribution pipe, and the liquid distribution pipe is connected to the multiple liquid inlets;

[0013] The liquid dispensing tube includes a first liquid dispensing tube and a second liquid dispensing tube, and the first liquid dispensing tube and the second liquid dispensing tube are connected to the same number of liquid inlets.

[0014] As a further technical solution of the present invention: the spray pipe includes a main pipe, a main flow channel is formed in the main pipe, the liquid inlet is connected to the main flow channel, and a plurality of diverter plates are evenly distributed on both sides of the main pipe along the length direction, and a diverter channel connected to the main flow channel is formed in the diverter plate;

[0015] The spray hole is provided at the bottom of the diverter plate and is communicated with the diverter channel;

[0016] The coolant flows into the main channel from the liquid inlet, passes through a plurality of branch channels, and is sprayed out from the spray holes of each of the branch plates.

[0017] As a further technical solution of the present invention: the cross-sectional area of the main flow channel is larger than the cross-sectional area of the branch flow channel.

[0018] As a further technical solution of the present invention: the connection between one end of the diverter plate and the main pipe is arranged in an arc shape.

[0019] As a further technical solution of the present invention: a plurality of positioning plates are provided on the side wall of the main pipe, the plurality of positioning plates and the plurality of diverter plates are evenly distributed alternately, and positioning holes are respectively opened on the plurality of positioning plates.

[0020] As a further technical solution of the present invention: the battery module includes a plurality of battery cells and a binding mechanism, and the binding mechanism is used to arrange and fix the plurality of battery cells in sequence to form a battery module.

[0021] As a further technical solution of the present invention: a partition plate is provided between two adjacent battery cells, and a mounting block is integrally formed and fixedly connected to the top of the partition plate, and the mounting block is used to detachably fix the spray pipe to the battery module.

[0022] In summary, the present invention has at least one of the following beneficial technical effects:

[0023] 1. The utility model discloses a liquid-cooled energy storage PACK device, which prevents the coolant from accumulating at the bottom of the battery module after absorbing heat from the battery module by setting a cavity between the bottom of the battery module and the bottom wall of the box, thereby preventing the coolant from accumulating at the bottom of the battery module after absorbing heat from the battery module, resulting in reduced cooling efficiency of the battery module.

[0024] 2. The utility model discloses a liquid-cooled energy storage PACK device. By providing a liquid outlet pipe on the side wall of the box, it can ensure that the coolant after absorbing the heat of the battery module is discharged from the box in time, avoiding the decline in cooling performance or failure of the spray-type liquid-cooled energy storage PACK device due to accumulation or poor flow of coolant.

[0025] 3. The utility model discloses a liquid-cooled energy storage PACK device. A slope is provided between the support plate and the bottom wall of the box. The slope gradually increases in gradient from the end closest to the liquid outlet pipe to the end farther from the pipe. The slope forms an inclined plane at the bottom of the box. Under the action of gravity, the coolant flows along the slope toward the liquid outlet pipe. This design helps to accelerate the flow of the coolant, thereby draining it out of the box more quickly, reducing its residence time within the box, and improving the cooling efficiency of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 Schematic diagram of the liquid inlet plate of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure inside the box of the utility model;

[0029] Figure 4 This is a structural diagram of the liquid inlet pipe of the utility model;

[0030] Figure 5 This is a schematic structural diagram of the battery module of the present invention;

[0031] Figure 6 Based Figure 5 A partial enlarged schematic diagram of part D in the middle;

[0032] Figure 7 This is a schematic structural diagram of the spray pipe of the present utility model;

[0033] Figure 8 for Figure 7 A partial enlarged schematic diagram of part A;

[0034] Figure 9 This is a bottom view of the spray pipe of the present invention;

[0035] Figure 10 for Figure 9 A partial enlarged schematic diagram of part B;

[0036] Figure 11 This is a cross-sectional view of the spray pipe of the present invention;

[0037] Figure 12 for Figure 11 A partial enlarged schematic diagram of part C in the middle.

[0038] Reference numerals: 1, main pipe; 11, main channel; 12, first side wall; 13, second side wall; 2, spray plate; 21, branch channel; 22, spray hole; 23, left side wall; 24, right side wall; 3, liquid inlet; 31, liquid inlet pipe; 32, main liquid inlet pipe; 33, branch liquid inlet pipe; 331, first branch liquid inlet pipe; 332, second branch liquid inlet pipe; 35, liquid outlet pipe; 36, box body; 4, fixing plate; 41, fixing hole; 42, reinforcing rib; 43, Inclined surface; 5. Mounting plate; 51. Mounting hole; 6. Battery module; 61. Battery cell; 62. Support plate; 63. Drain hole; 64. Slope; 7. Diverter plate; 71. Main board; 721. Side plate; 70. Diverter mechanism; 8. Partition plate; 81. Mounting block; 82. Upper groove; 83. Lower groove; 9. Binding mechanism; 91. Cable tie; 92. Front pressure plate; 93. Rear pressure plate; 94. Front side wall; 95. Rear side wall; 10. Spray pipe. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments, and based on these embodiments, they all fall within the scope of protection of the present application.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., which indicate orientations or indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0042] like Figure 1 A liquid-cooled energy storage PACK device includes a box 36, wherein a plurality of battery modules 6 are arranged in the box 36. Preferably, the battery modules 6 are arranged in four groups. A liquid inlet pipe 31 and a liquid outlet pipe 35 are provided on the side wall of the box 36. A spray pipe 10 is detachably fixed to the upper surface of each battery module 6, and a plurality of spray holes 22 are formed at the bottom of the spray pipe 10. A liquid inlet 3 is provided at one end of each spray pipe 10, and the plurality of liquid inlets 3 are connected to the liquid inlet pipe 31.

[0043] A support plate 62 is provided at the bottom of the battery module 6, and a plurality of drainage holes 63 are opened on the support plate 62. The four sides of the support plate 62 are fixed to the inner wall of the box body 36 and a cavity is provided between the support plate 62 and the bottom wall of the box body 36. One end of the liquid outlet pipe 35 is connected to the cavity provided between the support plate 62 and the bottom wall of the box body 36.

[0044] A cavity is provided between the bottom of the battery module 6 and the bottom wall of the housing 36 to prevent the coolant from accumulating at the bottom of the battery module 6 after absorbing heat from the battery module 6, which would reduce the cooling efficiency of the battery module 6. A liquid outlet pipe is also provided on the side wall of the housing 36 to ensure that the coolant, after absorbing heat from the battery module 6, is promptly discharged from the housing 36, thus preventing a decrease in cooling performance or failure of the spray-type liquid-cooled energy storage PACK device due to coolant accumulation or poor flow.

[0045] In a spray-type liquid cooling system, coolant is sprayed onto the battery module 6 through the spray pipe 10. It absorbs heat generated by the battery module 6, causing its temperature to rise. The coolant then flows through the drainage holes 63 on the support plate 62 to the bottom of the housing 36 and is ultimately collected through the outlet pipe 35. The recovered coolant can be cooled by cooling equipment (such as a cooling tower or chiller) before being recycled through the inlet pipe 31, forming a closed-loop cooling system.

[0046] like Figure 2 A slope 64 is provided between the support plate 62 and the bottom wall of the housing 36. The slope 64 gradually increases in gradient from the end closest to the liquid outlet pipe 35 to the end further away from the liquid outlet pipe 35. This slope 64 forms an inclined plane at the bottom of the housing 36, and gravity forces the coolant to flow along the slope 64 toward the liquid outlet pipe 35. This design helps accelerate the flow of coolant, allowing it to exit the housing 36 more quickly, reducing its residence time within the housing 36 and improving the cooling efficiency of the battery modules 6.

[0047] Without the slope 64, coolant would accumulate in certain low-lying areas, forming "dead zones" that prevent the battery modules 6 in these areas from being effectively cooled. The slope 64 design effectively prevents this from occurring, ensuring that coolant flows evenly through each battery module 6. The combined use of the slope 64 and the liquid outlet pipe 35 promotes coolant flow and recovery, reducing liquid accumulation within the system and the risk of corrosion and blockage caused by this accumulation. This helps extend the system's service life and reduces maintenance costs.

[0048] like Figure 3 and Figure 4, the liquid pipe 33 includes a first liquid branch pipe 331 and a second liquid branch pipe 332, and the number of liquid inlets 3 connected to the first liquid branch pipe 331 and the second liquid branch pipe 332 is the same. By subdividing the liquid inlet pipe 32 into the main liquid inlet pipe 32, the first liquid branch pipe 331 and the second liquid branch pipe 332, and ensuring that the number of liquid inlets 3 connected to the first liquid branch pipe 331 and the second liquid branch pipe 332 is the same, when the coolant flows from the main liquid inlet pipe 32 into the liquid branch pipe 33, the flow rate of the first liquid branch pipe 331 and the flow rate of the second liquid branch pipe 332 are kept balanced, so that the coolant can be evenly distributed to the spray pipe 10 above each battery module 6. This uniform distribution ensures that each battery module 6 can obtain a similar amount of coolant spray, thereby helping to achieve temperature balance between battery modules 6. In a multi-battery module 6 system, since the working status, heat load and heat dissipation conditions of each battery module 6 may be different, it is easy to cause inconsistent temperatures between modules. Through the above design, each battery module 6 can receive an appropriate amount of coolant spray, which helps to reduce the temperature difference between the battery modules 6 and prevent some battery modules 6 from overheating while other battery modules 6 are too cold, thereby improving the thermal management efficiency of the entire spray-type liquid-cooled energy storage PACK device.

[0049] The coolant is first pumped into the spray-type liquid-cooled energy storage PACK device through the main liquid inlet pipe 32, and then enters the liquid distribution pipe 33 for diversion, flowing into the first liquid distribution pipe 331 and the second liquid distribution pipe 332. The first liquid distribution pipe 331 and the second liquid distribution pipe 332 ensure that the flow of the coolant can be evenly distributed to the liquid inlet 3 of each spray pipe 10. Once the coolant enters the spray pipe 10, it will be evenly sprayed around the battery module 6 through the multiple spray holes 22 at the bottom. This spraying method not only ensures wide coverage of the battery module 6, but also effectively absorbs the heat generated by the battery module 6 during the charging and discharging process. The coolant that has absorbed the heat then flows freely in the box 36, and is finally discharged from the entire cooling system through the liquid outlet pipe 35, completing the entire cooling cycle.

[0050] like Figure 5 A plurality of diverter plates 7 are detachably fixed on the battery module 6 , and a spray pipe 10 is arranged above the diverter plate 7 . The coolant is sprayed from the spray pipe 10 and diverted to the surface of the battery module 6 through the diverter plate 7 .

[0051] like Figure 6The manifold 7 includes a main board 71 and two side panels 72 integrally formed with the main board 71, located on either side of the main board 71. The two side panels 72 are removably mounted on two adjacent battery cells 61. The main board 71 is located directly below the nozzle 22 and directly above the gap between the two adjacent battery cells 61. After the coolant is sprayed from the nozzle 22 of the spray pipe 10, it is sprayed onto the manifold 7, dispersed, and flows along the main board 71 and side panels 72 to the battery module 6, forming fine droplets that cover the surface of the battery module 6 while flowing into the gaps between the battery cells 61. The droplets flow from top to bottom along the side walls of the battery cells 61 and converge at the bottom of the battery module, thereby dissipating heat from the outer wall of the battery module in all directions. An appropriate gap facilitates the flow of coolant in the battery module 6 and improves heat dissipation performance. Excessive gaps can affect the structural stability of the battery module 6. A gap of 3-8 mm can ensure heat dissipation performance while maintaining structural stability.

[0052] like Figure 5 The battery module 6 includes a plurality of battery cells 61 and a bundling mechanism 9. The bundling mechanism 9 is used to arrange and fix the plurality of battery cells 61 in sequence to form a battery module 6. The bundling mechanism 9 includes a cable tie 91, a front pressure plate 92 and a rear pressure plate 93. The front pressure plate 92 is arranged on the front side wall 93 of the battery module 6 at one end close to the liquid inlet 3, and the rear pressure plate 93 is arranged on the rear side wall 94 of the battery module 6 at the end away from the liquid inlet 3. The cable tie 91 serves as the main bundling element, tightly connecting the battery cells 61 together to form a whole. The cable tie 91 can be a single bundle or multiple bundles. Preferably, the cable tie 91 is three bundles, and the three bundles of cable ties 91 are evenly spaced. The material and size of the cable tie 91 need to be selected according to the specific requirements of the battery module 6 to ensure that it can provide sufficient fixing force without causing damage to the battery cells 61. Preferably, the cable tie 91 is made of steel. The front pressure plate 92 and the rear pressure plate 93 are respectively arranged on the front and rear sides of the battery module 6. Through their cooperation with the cable tie 91, the stability of the battery module 6 in the horizontal direction can be further increased. At the same time, this design can also effectively prevent the battery module 6 from being deformed or displaced when subjected to external force. During the installation process, the battery cells 61 are first arranged in a predetermined order, and then they are bundled up in sequence using the cable tie 91. During the bundling process, it is necessary to ensure that the tightness of the cable tie 91 is moderate, so that it can fix the battery cell 61 while avoiding being too tight to cause damage to the battery cell 61. Finally, the front pressure plate 92 and the rear pressure plate 93 are installed on the front and rear sides of the battery module 6 to complete the installation of the entire bundling mechanism 9.

[0053] like Figure 7The spray pipe 10 includes a main pipe 1, a main channel 11 is opened in the main pipe 1, and the liquid inlet 3 is connected to the main channel 11. A plurality of diverter plates 2 are evenly distributed on both sides of the main pipe 1 along its length direction. A diverter channel 21 connected to the main channel 11 is opened in the diverter plate 2, and a spray hole 22 connected to the diverter channel 21 is opened at the bottom of the diverter plate 2. The coolant flows into the main channel 11 from the liquid inlet 3, passes through the plurality of diverter channels 21, and is sprayed out from the spray holes 22 of each diverter plate 2.

[0054] like Figure 11 The cross-sectional area of the main channel 11 is larger than that of the branch channel 21. By gradually reducing the cross-sectional area of the connection between one end of the spray plate 2 and the main pipe 1, a Venturi effect is formed, which increases the water flow velocity and the spray pressure, so that the coolant sprayed from the spray hole 22 is more concentrated and powerful.

[0055] like Figure 12 Preferably, the bottom wall of the main channel 11 connects to the bottom wall of the branch channel 21 in a curved transition. The cross-sectional area of the main channel 111 gradually decreases from the end closest to the liquid inlet 3 to the end farther from the liquid inlet 3. The height of the main channel 11 is greater than that of the branch channel 21, causing the water flow to be squeezed during passage, forming a more concentrated water flow that is ejected from the spray holes 22, thereby improving the spray effect. Furthermore, the thickness of the spray plate 2 is less than that of the main pipe 1, facilitating installation of the spray pipe 10 on the battery module 6.

[0056] The connection between one end of the spray plate 2 and the main pipe 1 is arranged in an arc shape, so that the distance between the left side wall 23 and the right side wall 24 of the connection between one end of the spray plate 2 and the main pipe 1 gradually decreases from the end close to the main channel 11 to the end close to the spray plate 2, realizing a rounded transition at the connection between the main pipe 1 and the spray plate 2. This helps to reduce the contact area with the wall of the main pipe 1 when the spray liquid is turned, thereby reducing the flow resistance and allowing the spray liquid to enter the spray plate 2 more smoothly, helping to maintain the flow stability of the spray liquid in the flow channel and avoid the unevenness of the spray liquid caused by eddy currents or turbulence generated when the flow is turned. At the same time, this structure can slowly release the impact of the coolant in the main channel 11 on the connection between one end of the spray plate 2 and the main pipe 1, avoiding damage to the connection between one end of the spray plate 2 and the main pipe 1 and affecting the function of the spray pipe 10 for the battery module 6.

[0057] like Figure 8The side wall of the main pipe 1 is provided with a plurality of fixing plates 4, and the plurality of fixing plates 4 are evenly spaced apart with the plurality of spray plates 2. The fixing plates 4 are respectively provided with fixing holes 41, which can cooperate with the battery module 6 to achieve rapid installation and accurate positioning of the spray pipe 10. The fixing plates 4 and the spray plates 2 on the side wall of the main pipe 1 are evenly spaced apart, ensuring that the spray pipe 10 has reliable installation and positioning points in the length direction. Preferably, the fixing holes 41 are waist-shaped holes, which can adapt to different fasteners, such as bolts, nuts, etc., and the spray pipe 10 is tightly connected to the battery module 6 through the fasteners to ensure that the spray pipe 10 will not be displaced or loosened during use.

[0058] like Figure 8 Reinforcing ribs 42 are integrally formed and fixedly connected to each side of the fixing plate 4. These ribs 42 are integrally formed and fixedly connected to the sidewalls of the main pipe 1. The design of these ribs 42 increases the fixing plate 4's resistance to bending and torsion, allowing it to maintain its shape and position even when subjected to external loads. Furthermore, the integral, fixed connection between the ribs 42 and the sidewalls of the main pipe 1 ensures a secure connection between the two, further enhancing the overall strength and stability of the sprinkler pipe 10.

[0059] A slope 43 is provided at one end of the reinforcing rib 42 away from the side wall of the main pipe 1 to prevent the fixing plate 4 from being scratched during use, effectively preventing the fixing plate 4 from being deformed or damaged during use, and further improving the reliability and safety of the spray pipe 10 in the battery module 6.

[0060] like Figure 9 The main pipe 1 is provided with a liquid inlet 3 and one end thereof is provided with a mounting plate 5. Figure 10 This is an enlarged view of the mounting plate 5. Two mounting holes 51 are provided on the mounting plate 5. The two mounting holes 51 on the mounting plate 5 can cooperate with the battery module 6, and the spray pipe 10 can be tightly connected to the battery module 6 through bolts or other fasteners.

[0061] like Figure 6 A partition plate 8 and a mounting block 81 integrally formed with the partition plate 8 are provided between two adjacent battery cells 61. A plurality of fixing plates 4 are provided on the side wall of the spray pipe 10. The plurality of fixing plates 4 and the plurality of jet plates 2 are evenly distributed alternately. The plurality of fixing plates 4 are respectively provided with fixing holes 41. The mounting block 81 is provided with threaded holes or other fixing holes 41. The fixing holes 41 are used to detachably fix the fixing plates 4 to the mounting block 81 through fasteners. The fasteners can be fastened by threaded connection or screw connection.

[0062] An upper groove 82 is provided on the upper surface of the mounting block 81. The main board 71 is cross-sectioned into a raised quadrilateral, which is higher than the side panels 72 on both sides. The upper groove 82 cooperates with the main board 71 so that the main board 71 is stuck on the upper groove 82. The upper groove 82 provides precise positioning and stable fixation for the spray pipe 10, ensuring that the spray pipe 10 can be accurately located above the battery module 6, laying the foundation for subsequent uniform heat dissipation.

[0063] The lower surface of the mounting block 81 is provided with a lower groove 83, which allows the coolant to form a specific flow path when flowing in the spray pipe 10. When the coolant is sprayed out from the spray hole 22, it will flow along the space formed by the surface of the battery module 6 and the lower groove 83, ensuring that the coolant forms an effective flow channel on the upper surface of the battery cell 61 inside the electric module with the gap between the two battery cells 61, promoting the flow and distribution of the coolant, and ensuring that the coolant can be evenly covered on each battery cell 61. This design helps to improve the balance and efficiency of heat dissipation, avoid excessive temperature differences between the battery cells 61, thereby improving the working efficiency of the battery module 6, extending the service life and enhancing safety. The introduction of the lower groove 83 also increases the contact area between the coolant and the surface of the battery module 6. When the coolant flows through the lower groove 83, it will form more contact points with the surface of the battery module 6, thereby increasing the heat transfer efficiency and further improving the heat dissipation effect.

[0064] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A liquid-cooled energy storage PACK device, comprising a box (36), wherein a plurality of battery modules (6) are arranged in the box (36), characterized in that: A liquid inlet pipe (31) and a liquid outlet pipe (35) are provided on the side wall of the box body (36); a spray pipe (10) is detachably fixed on the upper surface of each battery module (6); and a plurality of spray holes (22) are provided at the bottom of the spray pipe (10); A liquid inlet (3) is provided at one end of each of the spray pipes (10), and a plurality of the liquid inlets (3) are connected to the liquid inlet pipe (31); A support plate (62) is provided at the bottom of the battery module (6), and a plurality of drainage holes (63) are provided on the support plate (62). The support plate (62) is fixed on the inner wall of the box (36) around its periphery and a cavity is provided between the support plate (62) and the bottom wall of the box (36); One end of the liquid outlet pipe (35) is in communication with the cavity.

2. A liquid-cooled energy storage PACK device according to claim 1, characterized in that: A slope (64) is provided between the support plate (62) and the bottom wall of the box body (36), and the slope of the slope (64) gradually increases from an end close to the liquid outlet pipe (35) to an end away from the liquid outlet pipe (35).

3. The liquid-cooled energy storage PACK device according to claim 1, characterized in that: The liquid inlet pipe (31) includes a main liquid inlet pipe (32) and a liquid distribution pipe (33), one end of the main liquid inlet pipe (32) passes through the side wall of the box body (36), and the other end is connected to the liquid distribution pipe (33), and the liquid distribution pipe (33) is connected to the plurality of liquid inlets (3); The liquid dispensing tube (33) comprises a first liquid dispensing tube (331) and a second liquid dispensing tube (332), and the first liquid dispensing tube (331) and the second liquid dispensing tube (332) are in communication with the same number of liquid inlets (3).

4. The liquid-cooled energy storage PACK device according to claim 3, characterized in that: The spray pipe (10) comprises a main pipe (1), a main flow channel (11) is provided in the main pipe (1), the liquid inlet (3) is connected to the main flow channel (11), a plurality of diverter plates (2) are evenly distributed on both sides of the main pipe (1) along its length direction, and a diverter channel (21) is provided in the diverter plate (2) and is connected to the main flow channel (11); The spray hole (22) is provided at the bottom of the diverter plate (2) and is in communication with the diverter channel (21); The cooling liquid flows into the main channel (11) from the liquid inlet (3), passes through the plurality of branch channels (21), and is sprayed out from the spray holes (22) of each of the branch plates (2).

5. The liquid-cooled energy storage PACK device according to claim 4, characterized in that: The cross-sectional area of the main flow channel (11) is greater than the cross-sectional area of the branch flow channel (21).

6. The liquid-cooled energy storage PACK device according to claim 4, characterized in that: The connection between one end of the diverter plate (2) and the main pipe (1) is arranged in an arc shape.

7. The liquid-cooled energy storage PACK device according to claim 4, characterized in that: The side wall of the main pipe (1) is provided with a plurality of positioning plates (4), the plurality of positioning plates (4) and the plurality of diverter plates (2) are evenly distributed alternately, and the plurality of positioning plates (4) are respectively provided with positioning holes (41).

8. The liquid-cooled energy storage PACK device according to claim 4, characterized in that: The battery module (6) comprises a plurality of battery cells (61) and a binding mechanism (9), wherein the binding mechanism (9) is used to sequentially arrange and fix the plurality of battery cells (61) to form the battery module (6).

9. The liquid-cooled energy storage PACK device according to claim 8, characterized in that: A partition plate (8) is provided between two adjacent battery cells (61), and a mounting block (81) is integrally formed and fixedly connected to the top of the partition plate (8). The mounting block (81) is used to detachably fix the spray pipe (10) to the battery module (6).

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