Cooling device of energy storage system

Abstract

The utility model discloses a cooling device of an energy storage system, which comprises a cooling pipe group used for providing cooling capacity for the energy storage system, a driving source used for driving cooling liquid in the cooling pipe group to circularly flow, and a heat conducting component rotatably arranged in the cooling pipe group, one end of the heat conducting component is positioned in a flow channel of the cooling pipe group, and the other end of the heat conducting component is positioned in a flow channel of the energy storage system. And the other end is positioned outside the flow channel of the cooling pipe group. The cooling liquid in the cooling pipe group can flow circularly under the driving of the driving source, the cooling liquid takes away heat of the battery module and provides cooling capacity for the battery module in the circulating flowing process, and meanwhile, the heat conduction part can conduct out part of heat in the cooling liquid, so that the cooling rate of the cooling liquid is increased, and the service life of the battery module is prolonged. The heat exchange performance of the cooling pipe group is improved, so that the cooling effect on the battery module can be improved, the good performance of the battery module is ensured, the service life of the battery module is prolonged, and the potential safety hazard caused by high temperature of the battery module is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling devices for energy storage devices, and in particular to a cooling device for an energy storage system. Background Technology

[0002] With the rapid development of new energy vehicles, the requirements for their performance and safety are becoming increasingly stringent. Energy storage systems are a key component of new energy vehicles, primarily consisting of battery modules. To improve vehicle power and shorten battery module charging time, high-rate charging and discharging capabilities are typically required. However, battery modules generate significant heat during these high-rate charging and discharging processes. Furthermore, the compact structure of battery modules makes them prone to heat accumulation, which can lead to performance degradation, capacity reduction, and even substantial safety hazards. While thermal insulation technology within battery modules can effectively mitigate the impact of ambient temperature, it cannot alleviate the heat generated during battery use. Therefore, temperature control devices are necessary to regulate the battery's operating temperature.

[0003] Currently, the cooling of battery modules in related technologies mainly uses a combination of liquid cooling and air cooling. However, the drive structure in liquid cooling and air cooling also generates a certain amount of heat during operation, which is not very effective in cooling the battery module. The battery module is still prone to heat accumulation, which affects the performance and lifespan of the battery module, and also brings significant safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for an energy storage system to address the shortcomings of existing technologies, improve the cooling effect on battery modules, ensure the good performance and service life of battery modules, and reduce safety hazards caused by battery modules.

[0005] To achieve one of the above objectives, the present invention provides a cooling device for an energy storage system, comprising a cooling pipe assembly for providing cooling capacity to the energy storage system, a drive source for driving the coolant in the cooling pipe assembly to circulate, and a heat-conducting component rotatably disposed in the cooling pipe assembly, wherein one end of the heat-conducting component is located inside the flow channel of the cooling pipe assembly, and the other end is located outside the flow channel of the cooling pipe assembly.

[0006] As a further improvement of one embodiment of the present invention, the heat-conducting component includes a rotating component located inside the flow channel of the cooling pipe assembly, a heat-conducting component located outside the flow channel of the cooling pipe assembly, and a rotating shaft connecting the rotating component and the heat-conducting component, wherein the rotating shaft is rotatably connected to the pipe wall of the cooling pipe assembly.

[0007] As a further improvement of one embodiment of the present invention, the cooling pipe assembly has a through hole on its pipe wall for the rotating shaft to pass through, and a sealing connector is provided between the rotating shaft and the cooling pipe assembly, so that the rotating shaft rotates in a sealed manner on the pipe wall of the cooling pipe assembly through the sealing connector.

[0008] As a further improvement of one embodiment of the present utility model, the rotating member includes a rotating plate extending along the axial direction perpendicular to the flow channel. The rotating plate is fixed to the rotating shaft, and the center line of the rotating plate extending along the height direction is collinear with the axis of the rotating shaft. The rotating plate is recessed inward along the extension direction and has two grooves that are centrally symmetrical along the axial direction of the rotating shaft.

[0009] And / or, the width of the groove gradually decreases along the depth direction.

[0010] As a further improvement of one embodiment of the present invention, the rotating plate has a planar first wall surface, and the first wall surface is provided with two surfaces that are connected to the groove, and the two first walls surface are centrally symmetrical about the axis of the rotating shaft.

[0011] As a further improvement of one embodiment of the present invention, the rotating plate also has an arc-shaped second wall surface, which connects the first wall surface on one side of the rotating plate and the groove on the other side of the rotating plate.

[0012] As a further improvement of one embodiment of the present invention, the heat-conducting component is provided with a spiral groove. With one side of the rotating plate as a reference, the spiral groove deflects from the direction of rotation of the cooling pipe assembly toward the end of the heat-conducting component toward the side where the groove is located.

[0013] As a further improvement of one embodiment of the present invention, the cooling pipe assembly includes an inlet pipe and a return pipe, and a cooling supply pipe connecting the inlet pipe and the return pipe. The driving source includes a housing with a circulation chamber, a driving blade rotatably connected to the housing, and a circulation blade coaxially connected to the driving blade. The inlet pipe and the return pipe are respectively connected to opposite sides of the housing, and the inlet pipe and the return pipe are connected to the circulation chamber. The driving blade is located outside the circulation chamber, and the circulation blade is located inside the circulation chamber.

[0014] As a further improvement of one embodiment of the present invention, the cooling pipe is connected to a temperature-conducting plate, which is used to exchange heat with the energy storage system.

[0015] As a further improvement of one embodiment of the present invention, the cooling device further includes a base providing an installation plane and a flow collector shroud disposed on the base. The flow collector shroud has openings on opposite sides, and the rotation axis of the drive blade extends along the arrangement direction of the openings at both ends of the flow collector shroud.

[0016] Compared with existing technologies, the driving source in this invention can drive the coolant in the cooling pipe assembly to circulate, allowing the coolant to carry away heat from the battery module and provide cooling during the circulation process. Simultaneously, the heat-conducting components can conduct some of the heat away from the coolant, accelerating the cooling rate and improving the heat exchange performance of the cooling pipe assembly. Therefore, the cooling device of this invention can improve the cooling effect on the battery module, ensuring its good performance, extending its service life, and reducing safety hazards caused by high temperatures in the battery module. Attached Figure Description

[0017] Figure 1 This is an isometric view of a cooling device for an energy storage system provided by the present invention;

[0018] Figure 2 This is an isometric view of the cooling structure of a cooling device for an energy storage system provided by the present invention;

[0019] Figure 3 yes Figure 2 The detailed diagram of the middle section is mainly used to show the distribution of the drive source and cooling pipe assembly;

[0020] Figure 4 This is a structural diagram of the heat-conducting component of a cooling device for an energy storage system provided by the present invention;

[0021] Figure 5 This is a detailed structural diagram of the heat-conducting component of a cooling device for an energy storage system provided by the present invention.

[0022] Figure label:

[0023] 100. Battery module; 10. Base; 20. Current collector; 30. Cooling pipe assembly; 31. Liquid inlet pipe; 32. Return pipe; 33. Cooling supply pipe; 331. Through hole; 40. Drive source; 41. Housing; 42. Drive blade; 50. Heat-conducting component; 51. Rotating plate; 511. Groove; 512. First wall surface; 513. Second wall surface; 52. Heat-conducting component; 521. Spiral groove; 53. Rotating shaft; 54. Sealing connector; 60. Temperature-conducting plate. Detailed Implementation

[0024] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The terms used in this embodiment, such as "upper," "above," "lower," and "below," which indicate spatial relative positions, are used for ease of explanation to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms "spatial relative position" may be intended to include different orientations of the device besides those shown in the figures during use or operation. For example, in this embodiment, "upper," "lower," "left," "right," "horizontal," and "vertical" all refer to the spatial relative position of the cooling device under normal operating conditions.

[0026] The terms "first," "second," etc., used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, a connection can be a direct connection or an indirect connection through an intermediate medium; it can be a fixed connection, a movable connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the appendices in the embodiments of this utility model will be described below. Figure 1 -5. The technical solutions in the embodiments of this utility model are clearly and completely described.

[0028] One embodiment of this utility model provides a cooling device for an energy storage system. The cooling device is used to provide cooling to the energy storage system, mainly to cool down the battery module 100 in the energy storage system. The cooling device may include a base 10, and the upper surface of the base 10 is provided with a mounting plane. The battery module 100 in the energy storage system can be mounted on the mounting plane.

[0029] The cooling device also includes a cooling pipe assembly 30 mounted on the base 10, a drive source 40 for circulating the coolant in the cooling pipe assembly 30, and a heat-conducting component 50 rotatably mounted on the cooling pipe assembly 30. The cooling pipe assembly 30 is located on one side of the energy storage system to provide cooling to the battery module 100 within the energy storage system. The drive source 40 is located on the circulation pipe of the cooling pipe assembly 30 and drives the circulation of the coolant within the cooling pipe assembly 30, allowing the coolant to carry away heat from the battery module 100 during circulation. Simultaneously, the heat-conducting component 50 conducts some of the heat from the coolant, accelerating the cooling rate and improving the heat exchange performance of the cooling pipe assembly 30. Thus, the cooling device of this invention improves the cooling effect on the battery module 100, ensuring its good performance, extending its service life, and reducing safety hazards caused by high temperatures in the battery module 100.

[0030] The cooling pipe group 30 includes a liquid inlet pipe 31, a return pipe 32 and a cooling supply pipe 33. The cooling supply pipe 33 connects the liquid inlet pipe 31 and the return pipe 32. The coolant flows into the cooling supply pipe 33 from the liquid inlet pipe 31. The cooling supply pipe 33 can be arranged on one side of the battery module 100. The heat generated during the operation of the battery module 100 can be conducted to the coolant in the cooling supply pipe 33 to achieve the cooling of the battery module 100. The coolant in the cooling supply pipe 33 then flows out through the return pipe 32, and the cycle repeats to achieve the cyclic heat conduction of the coolant.

[0031] As an example, the battery module 100 in this embodiment includes two rows of battery packs. Correspondingly, the pipeline path of the cooling supply pipe 33 corresponds to the two rows of battery packs. That is, the cooling supply pipe 33 is arranged in a "匸" shape in this embodiment. In an alternative embodiment, the cooling supply pipe 33 can be arranged in a serpentine shape, etc. The pipeline path of the cooling supply pipe 33 corresponds to the position of the battery packs in the battery module 100 to ensure that the cooling capacity of the coolant covers all the battery packs in the battery module 100.

[0032] The driving source 40 includes a housing 41. The housing 41 can be fixedly connected to the base 10. A circulation chamber is defined inside the housing 41, and through holes communicating with the circulation chamber are provided at opposite ends of the housing 41. The liquid inlet pipe 31 is connected to the through hole at one end of the housing 41, and the return pipe 32 is connected to the through hole at the other end of the housing 41. Thus, the circulation chamber inside the housing 41, the liquid inlet pipe 31, the cooling supply pipe 33, and the return pipe 32 define a fluid flow path to form a circulation flow path for the coolant.

[0033] The driving source 40 further includes a driving blade 42 and a circulation blade (not shown in the figure). The circulation blade is located inside the circulation chamber of the housing 41, and the driving blade 42 is located outside the circulation chamber of the housing 41. The circulation blade is in transmission connection with the driving blade 42. During the driving operation of a new energy vehicle, air flow will be generated inside. The driving blade 42 can be arranged on the air flow path of the new energy vehicle. The air flow generated during the vehicle operation acts on the driving blade 42 to drive the circulation blade to rotate. The rotation of the circulation blade inside the circulation chamber can drive the coolant inside the circulation chamber to circulate, so that the coolant can circulate along the flow path of the circulation chamber - liquid inlet pipe 31 - cooling supply pipe 33 - return pipe 32 - circulation chamber to achieve the cooling of the battery module 100.

[0034] The above-mentioned circulation blade can be arranged in an impeller structure or in an interlocking gear structure, as long as the structure of the circulation blade can drive the coolant inside the circulation chamber to circulate. The specific structure is not limited in this embodiment.

[0035] One end of the heat-conducting component 50 is located inside the flow channel of the cooling pipe assembly 30, and the other end of the heat-conducting component 50 is located outside the flow channel of the cooling pipe assembly 30. The heat-conducting component 50 can conduct the heat of the coolant in the flow channel of the cooling pipe assembly 30 to accelerate the cooling of the coolant and improve the heat conduction performance of the coolant.

[0036] The heat-conducting component 50 includes a rotating component located inside the flow channel of the cooling pipe 33, a heat-conducting component 52 located outside the flow channel of the cooling pipe 33, and a rotating shaft 53 connecting the rotating component and the heat-conducting component 52. The rotating shaft 53 is rotatably connected to the pipe wall of the cooling pipe 33. The rotating component is in contact with the coolant inside the cooling pipe 33, and the heat-conducting component 52 is in contact with the air. The heat in the coolant is conducted away through the rotating component, the rotating shaft 53, and the heat-conducting component 52, which can improve the heat transfer performance of the coolant.

[0037] The rotating component is configured as a rotating plate 51 extending along the axis perpendicular to the inner flow channel of the cooling pipe 33. In this embodiment, the cooling pipe 33 extends in the horizontal direction, and the rotating plate 51 extends in the vertical direction, so that the coolant directly impacts the rotating plate 51 when it flows. The rotating plate 51 rotates under the action of fluid pressure to drive the heat-conducting component 52 to rotate. When the heat-conducting component 52 rotates, the heat conduction rate is accelerated.

[0038] To ensure smoother rotation of the rotating component under fluid drive, the rotating shaft 53 is fixedly connected to the center of the rotating plate 51 in the thickness direction. This means the centerline of the rotating plate 51 extending along its height direction is collinear with the axis of the rotating shaft 53, making the rotating plates 51 on both sides of the shaft 53 the same size, allowing for more stable rotation. The rotating plate 51 has recessed grooves 511 along its extension direction. Two grooves 511 are centrally symmetrical along the axis of the rotating shaft 53. Both sides of the rotating plate 51 have these grooves 511, which act as guides. When the coolant reaches the surface of the rotating plate 51, the fluid enters the grooves 511. Therefore, under the driving force of the fluid, the rotating plate 51 rotates towards the side with the grooves 511. The grooves 511 on both sides of the rotating plate 51 ensure that the rotating plate 51 always rotates in the same direction, causing the rotating plate 51 to drive the heat-conducting component 52 to rotate.

[0039] The width of the groove 511 gradually decreases along its depth direction. In this embodiment, the groove 511 is configured as an arc-shaped groove, with the side walls gradually contracting. The flow space of the coolant within the groove 511 gradually decreases along its flow direction, thus gradually increasing the fluid pressure of the coolant and causing the coolant to drive the rotating plate 51 to rotate smoothly. In optional embodiments, the groove 511 can also be configured as a curved or folded surface, as long as the groove 511 gradually contracts along its depth direction. Other structures that achieve the same effect as this embodiment are within the protection scope of this utility model.

[0040] The rotating plate 51 has a planar first wall surface 512. The first wall surface 512 is provided with two parts that are connected to the groove 511. The two first wall surfaces 512 are centrally symmetrical about the axis of the rotating shaft 53. When the rotating plate 51 is deflected to one side under the action of fluid pressure, the planar first wall surface 512 can play a guiding role, so that the fluid flows downstream along the surface of the rotating plate 51, ensuring that the rotating plate 51 rotates smoothly.

[0041] The rotating plate 51 also has an arc-shaped second wall 513. The second wall 513 connects the first wall 512 on one side of the rotating plate 51 and the groove 511 on the other side of the rotating plate 51. That is, the end faces of the rotating plate 51 at both ends in the length direction are set as arc surfaces. When the end face of the rotating plate 51 rotates to face the upstream of the fluid, the arc-shaped second wall 513 can make the fluid flow more smoothly downstream. The second wall 513 will not generate a large resistance to the coolant.

[0042] To improve the heat dissipation effect of the heat-conducting component 52, a spiral groove 521 is provided on the heat-conducting component 52. Taking one side of the rotating plate 51 as a reference, the spiral groove 521 rotates from the cooling pipe 33 toward the end of the heat-conducting component 52 toward the side where the groove 511 is located. In this embodiment, along the coolant flow direction, the groove 511 is located on the left side of the rotating plate 51, that is, the spiral groove 521 rotates counterclockwise from bottom to top. In other embodiments, if the groove 511 is located on the right side of the fluid flow direction, the corresponding spiral groove 521 is set to clockwise. The purpose of this arrangement is to generate an upward airflow when the heat-conducting component 52 rotates. The upward airflow can conduct the heat of the battery module 100 away more quickly, improving the thermal conductivity of the heat-conducting component 50.

[0043] Multiple sets of heat-conducting components 50 are arranged along the extension direction of the cooling pipe 33. These multiple sets of heat-conducting components 50 can rotate synchronously in one direction during fluid flow. The synchronously rotating multiple sets of heat-conducting components 50 can generate the same upward airflow, accelerating the cooling rate of the battery module 100. Furthermore, the arrangement of multiple sets of heat-conducting components 50 can also slow down the flow rate of the coolant, prolonging the heat conduction time between the coolant and the battery module 100 within the relative space, improving heat conduction performance, and ensuring the cooling of the battery module 100.

[0044] It should be noted that the heat-conducting component 50 is rotatably connected to the cooling pipe 33 in a sealed manner. The cooling pipe 33 has a through hole 331 on its wall for the rotating shaft 53 to pass through. A sealing connector 54 is provided between the rotating shaft 53 and the cooling pipe 33. The rotating shaft 53 rotates on the wall of the cooling pipe 33 in a sealed manner through the sealing connector 54. The sealing connector 54 can be set as a sealed bearing.

[0045] As a further limitation, a heat-conducting plate 60 is provided between the cooling pipe 33 and the battery module 100. The heat-conducting plate 60 can be connected to the lower end of the cooling pipe 33 by a connecting rod. The heat-conducting plate 60 is close to the battery module 100, and heat exchange between the coolant and the battery module 100 is realized through the heat-conducting plate 60.

[0046] As a further limitation, a flow collector 20 is provided on the base 10. The flow collector 20 covers the outside of the battery module 100 and the cooling device. The flow collector 20 is designed with an arched structure, and the opposite sides of the flow collector 20 are open. The rotation axis of the drive blade 42 extends along the arrangement direction of the openings at both ends of the flow collector 20. That is, the airflow direction that drives the drive blade 42 to rotate is the same as the arrangement direction of the openings at both ends of the flow collector 20. When the airflow inside the car drives the drive blade 42 to rotate, the drive blade 42 will also generate airflow. The airflow can be concentrated inside the flow collector 20. Therefore, the structure of the flow collector 20 can effectively improve the concentration of airflow and effectively improve the airflow guidance of this device, thereby facilitating the power collection of the drive blade 42.

[0047] The inlet pipe 31 and return pipe 32 are arranged vertically, and a replenishment port can be provided on the inlet pipe 31, return pipe 32, or cooling pipe 33 to replenish coolant. In an optional embodiment, the heat-conducting component 50 can also be provided on the inlet pipe 31 and return pipe 32. The heat-conducting component 50 on the inlet pipe 31 and return pipe 32 extends horizontally. It should be noted that the airflow direction driven by the heat-conducting component 52 in the heat-conducting component 50 needs to be the same as the airflow direction of the drive blade 42 to improve the heat conduction performance of the coolant. At the same time, the arched collector shroud 20 can guide the rising airflow inside the collector shroud 20. When the rising airflow generated by the heat-conducting component 50 reaches the top of the collector shroud 20, it will flow downward along the arc-shaped inner wall of the collector shroud 20. Therefore, an airflow circulation can be formed inside the collector shroud 20, making the heat dissipation rate of the battery module 100 faster.

[0048] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A cooling device for an energy storage system, characterized in that: It includes a cooling tube assembly (30) for providing cooling capacity to the energy storage system, a drive source (40) for driving the coolant in the cooling tube assembly (30) to circulate, and a heat-conducting component (50) rotatably disposed on the cooling tube assembly (30), one end of the heat-conducting component (50) being located inside the flow channel of the cooling tube assembly (30), and the other end being located outside the flow channel of the cooling tube assembly (30).

2. The cooling device for the energy storage system according to claim 1, characterized in that: The heat-conducting component (50) includes a rotating component located in the flow channel of the cooling tube assembly (30), a heat-conducting component (52) located outside the flow channel of the cooling tube assembly (30), and a rotating shaft (53) connecting the rotating component and the heat-conducting component (52), the rotating shaft (53) being rotatably connected to the tube wall of the cooling tube assembly (30).

3. The cooling device for the energy storage system according to claim 2, characterized in that: The cooling pipe assembly (30) has a through hole (331) on its pipe wall for the rotating shaft (53) to pass through. A sealing connector (54) is provided between the rotating shaft (53) and the cooling pipe assembly (30). The rotating shaft (53) rotates in a sealed manner on the pipe wall of the cooling pipe assembly (30) through the sealing connector (54).

4. The cooling device for the energy storage system according to claim 2, characterized in that: The rotating component is configured as a rotating plate (51) extending along the axis perpendicular to the flow channel. The rotating plate (51) is fixed to the rotating shaft (53), and the center line of the rotating plate (51) extending along the height direction is collinear with the axis of the rotating shaft (53). The rotating plate (51) is provided with a groove (511) recessed in the extension direction. The groove (511) is provided with two grooves that are centrally symmetrical along the axis of the rotating shaft (53). And / or, the width of the groove (511) gradually decreases along the depth direction.

5. The cooling device for the energy storage system according to claim 4, characterized in that: The rotating plate (51) has a planar first wall surface (512), and the first wall surface (512) is provided with two that are connected to the groove (511), and the two first wall surfaces (512) are centrally symmetrical about the axis of the rotating shaft (53).

6. The cooling device for the energy storage system according to claim 5, characterized in that: The rotating plate (51) also has an arc-shaped second wall surface (513), which connects the first wall surface (512) on one side of the rotating plate (51) and the groove (511) on the other side of the rotating plate (51).

7. The cooling device for the energy storage system according to claim 4, characterized in that: The heat-conducting component (52) is provided with a spiral groove (521). With one side of the rotating plate (51) as a reference, the spiral groove (521) rotates from the cooling pipe assembly (30) toward the end of the heat-conducting component (52) toward the side where the groove (511) is located.

8. The cooling device for the energy storage system according to any one of claims 1-7, characterized in that: The cooling pipe assembly (30) includes an inlet pipe (31) and a return pipe (32) and a cooling supply pipe (33) connecting the inlet pipe (31) and the return pipe (32). The drive source (40) includes a housing (41) with a circulation chamber, a drive blade (42) rotatably connected to the housing (41), and a circulation blade connected to the drive blade (42). The inlet pipe (31) and the return pipe (32) are respectively connected to opposite sides of the housing (41), and the inlet pipe (31) and the return pipe (32) are connected to the circulation chamber. The drive blade (42) is located outside the circulation chamber, and the circulation blade is located inside the circulation chamber.

9. The cooling device for the energy storage system according to claim 8, characterized in that: The cooling pipe (33) is connected to a heat-conducting plate (60), which is used to exchange heat with the energy storage system.

10. The cooling device for the energy storage system according to claim 8, characterized in that: The cooling device also includes a base (10) providing an installation plane and a flow collector (20) disposed on the base (10). The flow collector (20) has openings on opposite sides, and the rotation axis of the drive blade (42) extends along the arrangement direction of the openings at both ends of the flow collector (20).

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