Cooling assembly and energy storage battery assembly

Abstract

The embodiment of the utility model relates to the technical field of energy storage batteries, and provides a cooling assembly and an energy storage battery assembly, the cooling assembly is suitable for the energy storage battery assembly, and the energy storage battery assembly comprises a plurality of battery packs; the cooling assembly comprises a cooling plate, a first reinforcing beam structure and a second reinforcing beam structure; the cooling plate is in contact connection with the battery pack; the first stiffening beam structure comprises a plurality of first cross beams and a plurality of battery packs, the plurality of first cross beams are respectively arranged on the cooling plate at intervals along a first direction, and the end parts of the battery packs along the first direction are connected with the first cross beams; the second reinforcing beam structure comprises a longitudinal beam; and the longitudinal beam is mounted on one side wall, far away from the battery pack, of the cooling plate along the direction vertical to the first direction. The cooling assembly has the effects of improving the mechanical strength of the whole cooling assembly and preventing the battery pack from crushing the cooling assembly.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage batteries, and in particular to a cooling component and an energy storage battery assembly. Background Art

[0002] Currently, energy storage battery assemblies are mainly used in energy storage systems or electric vehicles to power DC loads.

[0003] In the related art, the energy storage battery assembly mainly includes a battery pack and a cooling assembly. The interior of the cooling assembly is provided with a flow channel for the circulation of coolant. The cooling assembly is in contact with and connected to the bottom of the battery pack to cool the battery pack through the circulating coolant.

[0004] However, the inventors realized that in actual use, since the cooling assembly has flow channels inside, the mechanical strength of the liquid cooling box itself is weakened. When the battery pack exerts downward gravity on the liquid cooling box for a long time, it may cause deformation of the liquid cooling box, which will affect the circulation of the coolant inside the cooling assembly, and further affect the cooling effect on the battery pack. Utility Model Content

[0005] One or more embodiments of the present application provide a cooling assembly to solve or at least partially alleviate the problem in the related art that a battery pack may cause deformation of the cooling assembly.

[0006] In a first aspect of the present application, a cooling assembly is provided, which is applicable to an energy storage battery assembly, wherein the energy storage battery assembly includes a plurality of battery packs and a plurality of end plates, and adopts the following technical solution:

[0007] A cooling assembly comprises a cooling plate, a first reinforcing beam structure and a second reinforcing beam structure, wherein the cooling plate is in contact with and connected to the battery pack; the first reinforcing beam structure comprises a plurality of first cross beams, a plurality of the battery packs and a plurality of the first cross beams are respectively installed on the cooling plate in an interval arrangement along a first direction, and the ends of the battery packs along the first direction are connected to the first cross beams; the second reinforcing beam structure comprises a longitudinal beam, and the longitudinal beam is installed on a side wall of the cooling plate away from the battery pack in a direction perpendicular to the first direction.

[0008] By adopting the above technical solution, (1) the cooling plate is in contact with the battery pack so that the heat generated by the battery pack during operation is transferred to the cooling plate, so that the battery pack is cooled and dissipated by the cooling plate.

[0009] (2) A plurality of first cross beams are installed on the cooling plate in an interval arrangement along a first direction, so that the mechanical strength of the cooling plate in the first direction can be increased by the plurality of first cross beams; the longitudinal beams are installed on a side wall of the cooling plate away from the battery pack in a direction perpendicular to the first direction, so that the mechanical strength of the cooling plate in the direction perpendicular to the first direction can be increased by the longitudinal beams, so as to improve the vertical support stiffness of the cooling plate from below, thereby improving the mechanical strength of the entire cooling assembly and preventing the battery pack from crushing the cooling assembly.

[0010] (3) Since the end of the battery pack along the first direction is connected to the first cross beam, not only the battery pack is fixedly mounted on the cooling plate through the first cross beam, but the first cross beams arranged on both sides of the battery pack along the first direction can also prevent the battery pack from being displaced in the first direction, thereby further enhancing the installation stability of the battery pack relative to the cooling plate.

[0011] In one embodiment, the cooling assembly also includes a third reinforcing beam structure, which includes a plurality of second cross beams, and the plurality of second cross beams are installed on a side wall of the cooling plate away from the battery pack at intervals along a first direction, and the two ends of the second cross beams are respectively connected to the two longitudinal beams.

[0012] In one embodiment, the second crossbeam includes a crossbeam body, a first connecting portion and a second connecting portion, the two first connecting portions are respectively arranged at the two ends of the crossbeam body along a direction perpendicular to the first direction, and the first connecting portion is welded and fixed to the longitudinal beam, the second connecting portion is arranged at the end of the crossbeam body along the first direction, and the second connecting portion is connected to the cooling plate through a first fastener.

[0013] In one of the embodiments, the cooling assembly further includes a reinforcement portion, a middle portion of the second cross beam protrudes upward to form the reinforcement portion, and the reinforcement portion is connected to the cooling plate.

[0014] In one of the embodiments, a cross section of the first beam along the first direction is a rectangular structure, and the first beam is fixed to the cooling plate by the second fastener.

[0015] In one embodiment, the longitudinal beam extends along the first direction; the longitudinal beam has a first step surface and a second step surface away from the side wall of the battery pack, the first step surface and the second step surface are arranged perpendicular to the first direction, the bottom surface of the second step surface in the vertical height is lower than the bottom surface of the first step surface, and the second step surface is connected to the second cross beam.

[0016] In one of the embodiments, a lifting hole is provided on the bottom wall of the longitudinal beam.

[0017] In one embodiment, the cooling plate includes a flat plate, a flow channel plate and two joints. The flow channel plate is arranged on a side of the flat plate away from the battery pack. The flow channel plate has a flow channel portion, and the flow channel portion is sealed and connected to the flat plate so that the cooling plate forms a cooling cavity for circulating coolant at the flow channel portion. One end of the two joints is installed on the flat plate and connected to the cooling cavity, and the other end of the two joints is used to connect to the liquid cooling unit.

[0018] In a second aspect of the present application, an energy storage battery assembly is provided, which adopts the following technical solution:

[0019] A storage battery assembly includes multiple battery packs and the cooling assembly as described above, and also includes an upper cover and multiple end plates, wherein the upper cover has a accommodating cavity, the upper cover is arranged on the cooling assembly, and the multiple battery packs are located in the accommodating cavity; the end plates are arranged on opposite sides of the battery pack along the first direction, and the battery pack is connected to the first crossbeam of the cooling assembly through the end plates.

[0020] By adopting the above technical solution, the opposite sides of the battery pack along the first direction can be connected to the first crossbeam of the cooling assembly through the end plates so as to be fixedly installed on the cooling assembly. The upper cover is arranged on the cooling assembly so as to encapsulate multiple battery packs in the accommodating cavity of the upper cover. Since the energy storage battery assembly includes the cooling assembly, the energy storage battery assembly has at least all the technical effects of the cooling assembly, which will not be repeated here.

[0021] In one of the embodiments, the energy storage battery assembly further includes a plurality of binding members and a plurality of flexible pads, wherein the flexible pads are disposed between the battery pack and the end plate, and the binding members are disposed around the battery pack, the flexible pads and the end plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0023] Figure 1 It is a schematic diagram of a partial explosion structure of an energy storage battery assembly according to some embodiments of the present application.

[0024] Figure 2 It is a schematic diagram of the structure of a cooling assembly according to some embodiments of the present application.

[0025] Figure 3 for Figure 2 Enlarged view of part A.

[0026] Figure 4It is a schematic diagram of the structure of a battery pack installed on a cooling assembly according to some embodiments of the present application.

[0027] Figure 5 for Figure 4 Magnified view of part B.

[0028] Figure 6 for Figure 2 Magnified view of part C.

[0029] Figure 7 It is a schematic diagram of the exploded structure of the cooling assembly according to some embodiments of the present application.

[0030] Figure 8 It is a schematic diagram of the overall explosion structure of the energy storage battery assembly according to some embodiments of the present application.

[0031] In the figure: 1-battery pack; 2-end plate; 3-cooling plate; 31-flat plate; 32-flow channel plate; 321-flow channel part; 33-joint; 4-first crossbeam; 5-longitudinal beam; 51-first step surface; 52-second step surface; 53-lifting hole; 6-second crossbeam; 61-crossbeam body; 62-first connecting part; 63-second connecting part; 64-reinforcement part; 7-upper cover; 8-binding piece; 9-flexible pad; 10-first fastener; 11-second fastener; 13-third fastener; 14-sealing ring. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings showing multiple embodiments of the present application. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without spending creative work will fall within the scope of protection of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those generally understood by technicians in the technical field of this application; the terms used in the specification of the application in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; in the coordinate system XYZ provided herein, the positive direction of the X axis represents the right, the reverse direction of the X axis represents the left, the positive direction of the Y axis represents the front, the reverse direction of the Y axis represents the back, the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom. The terms "include", "comprising", "having", "having", "containing", "including", etc. in the specification and claims of this application and the above-mentioned drawings are open-ended words. Therefore, "including", "comprising", "having", for example, a method or device with one or more steps or elements, which has one or more steps or elements, but is not limited to having only these one or more elements. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may include one or more of the features explicitly or implicitly. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present application, it should be understood that the terms "center", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0037] As mentioned above, it should be emphasized that when the term "includes / comprising" is used in this specification, it is used to clearly indicate the presence of the features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups of features, integers, steps, components. As used in this application, the singular forms "a", "an" and "the" also include plural forms, unless the context clearly indicates otherwise.

[0038] The words "a" and "an" in this specification may mean one, but may also be consistent with the meaning of "at least one" or "one or more". The term "about" generally means plus or minus 10% of the mentioned value, or more specifically plus or minus 5%. The term "or" used in the claims means "and / or" unless it is clearly stated that it refers to only alternative solutions.

[0039] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0040] Figure 1 It is a schematic diagram of a partial explosion structure of an energy storage battery assembly according to some embodiments of the present application.

[0041] One or more embodiments of the present application disclose a cooling assembly, which is applicable to an energy storage battery assembly, wherein the energy storage battery assembly includes a plurality of battery packs 1 and a cooling assembly. Figure 1 The cooling assembly includes a cooling plate 3, a first reinforcing beam structure and a second reinforcing beam structure, the cooling plate 3 is in contact with the battery pack 1; the first reinforcing beam structure includes a plurality of first cross beams 4, a plurality of the battery packs 1 and a plurality of the first cross beams 4 are respectively installed on the cooling plate 3 in an interval arrangement along a first direction, and the end of the battery pack 1 along the first direction is connected to the first cross beam 4; the second reinforcing beam structure includes a longitudinal beam 5, and the longitudinal beam 5 is installed on a side wall of the cooling plate 3 away from the battery pack 1 along a direction perpendicular to the first direction.

[0042] In at least one embodiment, the energy storage battery assembly includes a cooling component and a plurality of battery packs 1; the cooling plate 3 may be disposed below the battery pack 1, and the cooling plate 3 is in contact with and connected to the bottom surface of the battery pack 1, wherein the contact and connection between the cooling plate 3 and the battery pack 1 may be understood as direct contact between the cooling plate 3 and the battery pack 1, or contact and connection between the cooling plate 3 and the battery pack 1 via a heat-conducting structure, and the heat-conducting structure may be a heat-conducting glue or a heat-conducting pad. The cooling plate 3 is in contact with and connected to the bottom surface of the battery pack 1, so that the heat generated by the battery pack 1 during operation can be directly transferred to the cooling plate 3, so that the battery pack 1 can be quickly cooled and dissipated by the cooling plate 3. Figure 1 The direction opposite to the Z axis of the central coordinate system is the bottom of the battery pack 1 .

[0043] A plurality of first cross beams 4 are installed on the cooling plate 3 at intervals along the first direction, thereby increasing the mechanical strength of the cooling plate 3 in the first direction through the plurality of first cross beams 4; the number of longitudinal beams 5 is at least one, and when there are two longitudinal beams 5, the two longitudinal beams 5 are installed at intervals perpendicular to the first direction on a side wall of the cooling plate 3 away from the battery pack 1, thereby increasing the mechanical strength of the cooling plate 3 in the vertical direction through the two longitudinal beams 5, so as to improve the vertical support rigidity of the cooling plate 3 from below, thereby improving the mechanical strength of the entire cooling assembly and preventing the battery pack 1 from crushing the cooling assembly. Among them, if the surface of the cooling assembly in the vertical direction, such as the upper surface, is a rectangular structure, then the first direction refers to the length direction of the cooling assembly, which can also be understood as the extension direction of the cooling assembly (the longitudinal direction of the cooling assembly), which is the same as Figure 1 The first direction is parallel to the Y-axis direction of the coordinate system; and the first direction perpendicular to the first direction refers to the width direction of the cooling component, which can also be understood as the lateral direction of the cooling component). Figure 1 The X-axis of the mid-coordinate system is parallel.

[0044] Since the first cross beams 4 are arranged on opposite sides of the battery pack 1 along the first direction, and the ends of the battery pack 1 along the first direction are connected to the first cross beams 4, not only the battery pack 1 is fixedly mounted on the cooling plate 3 through the first cross beams 4, but also the first cross beams 4 arranged on both sides of the battery pack 1 along the first direction can prevent the battery pack 1 from being displaced in the first direction, further enhancing the installation stability of the battery pack 1 relative to the cooling plate 3. The battery pack 1 can be connected to the first cross beam 4 in the following manners, for example, the ends of the battery pack 1 along the first direction are fixedly connected to the first cross beam 4, or, in combination with Figure 5 As shown, the energy storage battery assembly also includes a plurality of end plates 2, an end plate 2 is arranged on opposite sides of each battery pack 1 along the first direction, and a first cross beam 4 is installed at the lower part of each end plate 2, so that the battery pack 1 is connected to the first cross beam 4 through the end plate 2, so that the battery pack 1 is fixedly installed on the cooling plate 3.

[0045] Figure 2 It is a schematic diagram of the exploded structure of the cooling assembly according to some embodiments of the present application.

[0046] In some embodiments, in combination Figure 2 As shown, the cooling assembly also includes a third reinforcing beam structure, which includes a plurality of second cross beams 6, and the plurality of second cross beams 6 are installed at intervals along the first direction on a side wall of the cooling plate 3 away from the battery pack 1, and the two ends of the second cross beam 6 are respectively connected to the two longitudinal beams 5.

[0047] In at least one embodiment, a plurality of second cross beams 6 may be installed at intervals along the first direction below the cooling plate 3, and the two ends of each second cross beam 6 are respectively connected to the two longitudinal beams 5, so that the mechanical strength of the cooling plate 3 in the transverse and longitudinal directions is respectively strengthened by the second cross beam 6 and the two longitudinal beams 5, so as to further improve the vertical support stiffness of the cooling plate 3 from below, and effectively prevent the battery pack 1 from bending the cooling plate 3.

[0048] Among them, the longitudinal beam 5 extends along the length direction of the cooling plate 3, and the first cross beam 4 and the second cross beam 6 are both extended along the width direction of the cooling plate 3; the number of second cross beams 6 can be flexibly arranged according to the weight of the battery pack 1 and the length of the cooling plate 3, and is not specifically limited here.

[0049] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0050] In some embodiments, in combination Figure 3 As shown, the second cross beam 6 includes a cross beam body 61, a first connection portion 62 and a second connection portion 63, the two first connection portions 62 are respectively arranged at the two ends of the cross beam body 61 along a direction perpendicular to the first direction, and the first connection portion 62 is welded and fixed to the longitudinal beam 5, and the second connection portion 63 is arranged at the end of the cross beam body 61 along the first direction, and the second connection portion 63 is connected to the cooling plate 3 through a first fastener 10.

[0051] In at least one embodiment, the portion of the second crossbeam 6 that is connected to the longitudinal beam 5 can be defined as a first connection portion 62. Since the two ends of the second crossbeam 6 are connected to two parallel longitudinal beams 5, so that the second crossbeam 6 has two first connection portions 62, the two first connection portions 62 are arranged at the two ends of the crossbeam body 61 along a direction perpendicular to the first direction; since the crossbeam body 61 is fixed to the longitudinal beam 5 by welding (full welding process) through the first connection portion 62, so that the welding strength between the first connection portion 62 and the longitudinal beam 5 is about 60% of the base material strength of the second crossbeam, the second crossbeam 6 and the two longitudinal beams 5 are welded into an integral structure, thereby effectively strengthening the overall stiffness of the cooling assembly, thereby improving the torsional resistance of the cooling plate 3 in the vertical upward and downward directions, and effectively preventing the individual cells of the battery pack 1 and other electrical components from being damaged by the deformation of the cooling plate 3.

[0052] The portion of the second crossbeam 6 connected to the cooling plate 3 can be defined as a second connection portion 63, so the second connection portion 63 can be set at the end of the crossbeam body 61 along the first direction, and the second connection portion 63 can be connected and fixed to the cooling plate 3 through the first fastener 10. In other words, the portion of the second crossbeam 6 along the first direction (the second connection portion 63) is connected to the cooling plate 3, and the second crossbeam 6 is connected to the longitudinal beam 5 along the portion perpendicular to the first direction (the first connection portion 62), so as to fix the cooling plate 3, the longitudinal beam 5 and the second crossbeam 6 into a cooling assembly with an integrated structure, further enhance the overall mechanical strength of the cooling assembly, and effectively prevent the cooling assembly from being bent and deformed by the battery pack 1. The first fastener 10 can be a bolt fastener. Each second crossbeam 6 has at least one second connection portion 63.

[0053] In some embodiments, in combination Figure 3 As shown, the cooling assembly further includes a reinforcing portion 64 , and the middle portion of the second cross beam 6 protrudes upward to form the reinforcing portion 64 , and the reinforcing portion 64 is connected to the cooling plate 3 .

[0054] In at least one embodiment, when the reinforcement portion 64 is a component of the cooling assembly, the reinforcement portion 64 is a portion of the middle portion of the second beam 6 that protrudes upward; when the reinforcement portion 64 is a component of the second beam 6, the reinforcement portion 64 is a portion of the middle portion of the beam body that protrudes upward; since the middle portion of the second beam 6 protrudes upward to form the reinforcement portion 64, and the reinforcement portion 64 can be in contact with or abut the cooling plate 3, it not only strengthens the mechanical strength of the middle portion of the beam body 61, but also supports the middle portion of the cooling plate 3 from below, so as to improve the vertical support stiffness of the cooling plate 3 and the battery pack 1, and further prevent the battery pack 1 from bending the cooling assembly.

[0055] Figure 4 It is a schematic structural diagram of a battery pack 1 installed on a cooling assembly according to some embodiments of the present application; Figure 5 for Figure 4Schematic diagram of the enlarged structure of part B.

[0056] In some embodiments, in combination Figure 4 and Figure 5 As shown, the cross section of the first crossbeam 4 along the first direction is a rectangular structure, and the first crossbeam 4 is fixed to the cooling plate 3 by the second fastener 11 .

[0057] In at least one embodiment, since the cross section of the first beam 4 along the first direction is a rectangular structure, in other words, the first beam 4 is a rectangular tube structure, and a plurality of first beams 4 are arranged at intervals along the first direction, the mechanical strength of the cooling plate 3 in a direction perpendicular to the first direction (width direction) can be increased. The first beam 4 is fixed to the cooling plate 3 by the second fastener 11, so that the first beam 4 is fixedly installed on the cooling plate 3.

[0058] The battery pack 1 can be fixed on the cooling plate 3 in the following manner. For example, the battery pack 1 is installed between two adjacent first beams 4, and the end plate 2 is installed on the side of the battery pack 1 along the first direction, and the first beam 4 is below the end plate 2. When the end plate 2 is fixed to the first beam 4 by the third fastener 13, not only the battery pack 1 is fixed to the cooling plate 3 by the end plate 2 and the first beam 4, but the two end plates 2 of the battery pack 1 along the first direction can also limit the displacement of the battery pack 1 in the first direction, thereby further enhancing the installation stability of the battery pack 1.

[0059] The second fastener 11 may be a rivet structure, a pull rivet structure, a bolt structure, or the like.

[0060] Figure 6 for Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0061] In some embodiments, in combination Figure 6 As shown, the longitudinal beam 5 is extended along the first direction; the side wall of the longitudinal beam 5 away from the battery pack 1 has a first step surface 51 and a second step surface 52, the first step surface 51 and the second step surface 52 are arranged perpendicular to the first direction, the bottom surface of the second step surface 52 in the vertical height is lower than the bottom surface of the first step surface 51, and the second step surface 52 is connected to the second cross beam 6.

[0062] In at least one embodiment, the longitudinal beam 5 is extended along the first direction, so as to strengthen the mechanical strength of the cooling plate 3 in the first direction (length direction). The side wall of the longitudinal beam 5 away from the battery pack 1 refers to the bottom wall of the longitudinal beam 5, and the bottom wall of the longitudinal beam 5 has a first step surface 51 and a second step surface 52, and the first step surface 51 and the second step surface 52 are arranged perpendicular to the first direction, so that relative to the straight longitudinal beam in the related art, the first step surface 51 and the second step surface 52 in the present application can effectively strengthen the mechanical strength of the longitudinal beam 5 perpendicular to the first direction, so the longitudinal beam 5 can effectively enhance the mechanical strength of the cooling plate 3 in the first direction and perpendicular to the first direction.

[0063] Among them, the second step surface 52 is closer to the center of the cooling plate 3 than the first step surface 51. Since the bottom surface of the second step surface 52 in the vertical height is lower than the bottom surface of the first step surface 51, the second step surface 52 is connected to the second cross beam 6, so that after the second step surface 52 is connected to the second cross beam 6, the bottom surface of the second cross beam 6 is higher than or flush with the first step surface 51 of the longitudinal beam 5. In other words, the bottom of the second cross beam 6 will not protrude from the first step surface 51, so that when the battery pack 1 is installed on the rack or other positions through the cooling assembly, the second cross beam 6 will not interfere with the smooth installation and fixation of the cooling assembly.

[0064] In some embodiments, in combination Figure 6 As shown, the bottom wall of the longitudinal beam 5 is provided with a hoisting hole 53 .

[0065] In the related art, in some cooling assemblies, lifting holes are directly opened on the side walls of the longitudinal beam, for example, the left and right side walls. When the hook of the lifting mechanism is connected to the lifting hole of the longitudinal beam, the side walls of the longitudinal beam are subjected to force so that the side walls of the longitudinal beam will be twisted. In other words, the cooling assembly will be deformed, thereby affecting the lifting safety of the entire energy storage battery assembly. Therefore, in at least one embodiment, a lifting hole 53 is opened on the bottom wall of the longitudinal beam 5 so that when the cooling assembly is lifted, the torsional force received by the side walls of the longitudinal beam 5 is small, and the shear force of the hook of the lifting mechanism on the side walls of the longitudinal beam 5 can also be avoided.

[0066] Among them, hoisting holes 53 are opened on the bottom walls of the two longitudinal beams 5, and the number of hoisting holes 53 on each longitudinal beam 5 is at least one; preferably, two hoisting holes 53 can be opened on the bottom wall of each longitudinal beam 5 to improve the hoisting safety of the cooling component.

[0067] Figure 7 It is a schematic diagram of the exploded structure of the cooling assembly according to some embodiments of the present application.

[0068] In some embodiments, in combination Figure 7As shown, the cooling plate 3 includes a flat plate 31, a flow channel plate 32 and two joints 33. The flow channel plate 32 is arranged on the side of the flat plate 31 away from the battery pack 1. The flow channel plate 32 has a flow channel portion 321. The flow channel portion 321 is sealed and connected to the flat plate 31 so that the cooling plate 3 forms a cooling cavity for the circulation of coolant at the flow channel portion 321. One end of the two joints 33 is installed on the flat plate 31 and connected to the cooling cavity, and the other end of the two joints 33 is used to connect to the liquid cooling unit.

[0069] In at least one embodiment, since the battery pack 1 is arranged above the cooling component, the flow channel plate 32 can be arranged on the side of the flat plate 31 away from the battery pack 1 (i.e., below), and the flow channel portion 321 can be understood as a groove structure on the flow channel plate 32 for circulating the coolant. When the flat plate 31 is sealed with the flow channel portion 321 of the flow channel plate 32, the cooling plate 3 forms a closed cooling cavity at the flow channel portion 321; the two joints 33 can be defined as a liquid inlet joint and a liquid outlet joint, respectively. The liquid cooling unit is used to output low-temperature coolant. When the liquid outlet of the liquid cooling unit outputs low-temperature coolant into the cooling cavity through one of the joints 33 (liquid inlet joint), it can circulate in the cooling cavity and flow back from the other joint 33 (liquid outlet joint) to the liquid return port of the liquid cooling unit. Since the coolant circulates in the cooling cavity, the heat generated by the battery pack 1 during operation can be taken away to achieve water cooling of the battery pack 1.

[0070] Among them, the liquid cooling unit can be a liquid cooling air conditioner.

[0071] Figure 8 It is a schematic diagram of the overall explosion structure of the energy storage battery assembly according to some embodiments of the present application.

[0072] One or more embodiments of the present application also disclose an energy storage battery assembly. Figure 8 The energy storage battery assembly includes a plurality of battery packs 1 and the cooling assembly as described above, and also includes an upper cover 7 and a plurality of end plates 2, wherein the upper cover 7 has a receiving cavity, the upper cover 7 is arranged on the cooling assembly, and the plurality of battery packs 1 are located in the receiving cavity; the end plates 2 are arranged on opposite sides of the battery pack 1 along the first direction, and the battery pack 1 is connected to the first crossbeam 4 of the cooling assembly through the end plates 2.

[0073] In some embodiments, since the upper cover 7 has a receiving cavity, when the upper cover 7 is connected to the cooling assembly, multiple battery packs 1 are in the receiving cavity, thereby realizing that multiple battery packs 1 are encapsulated between the upper cover 7 and the cooling assembly. The upper cover 7 is equivalent to the upper shell of the receiving cavity, and the cooling plate 3 in the cooling assembly is equivalent to the bottom plate of the receiving cavity. Among them, the energy storage battery assembly can be applied to electric vehicles or energy storage systems, which are not specifically limited here.

[0074] An end plate 2 is provided on opposite sides of each battery pack 1 along the first direction, and a first crossbeam 4 is installed at the lower part of each end plate 2, so that the battery pack 1 is connected to the first crossbeam 4 through the end plate 2, so that the battery pack 1 is fixedly installed on the cooling plate 3. The end plate 2 can be fixedly connected to the first crossbeam 4 through a third fastener 13.

[0075] In at least one embodiment, in combination Figure 8 As shown, the energy storage battery assembly also includes a sealing ring 14, which can be arranged at the connection between the upper cover 7 and the cooling plate 3 in the cooling assembly to increase the sealing between the two.

[0076] In some embodiments, in combination Figure 5 As shown, the energy storage battery assembly also includes a plurality of binding members 8 and a plurality of flexible pads 9, wherein the flexible pads 9 are arranged between the battery pack 1 and the end plate 2, and the binding members 8 are arranged around the battery pack 1, the flexible pads 9 and the end plate 2.

[0077] In at least one embodiment, the number of binding members 8 matches the number of battery packs 1, and the battery pack 1 includes a plurality of single battery cells, and the plurality of battery cells can be arranged along a first direction, and a flexible pad 9 is installed between the battery pack 1 and the end plate 2. When the binding member 8 surrounds the battery pack 1, the flexible pad 9 and the end plate 2, the plurality of battery cells in the battery pack 1 can be bundled and fixed into a whole through the binding member 8, and the end plate 2 and the flexible pad 9 can prevent the binding member 8 from damaging the surface of the single battery cell during the bundling process.

[0078] The flexible pad 9 may be made of foam material, rubber with fireproof performance, etc., so the flexible pad 9 is used to prevent the end plate 2 and the binding member 8 from causing marks on the surface of a single battery cell.

[0079] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A cooling assembly, suitable for an energy storage battery assembly, characterized in that: The energy storage battery assembly includes multiple battery packs, and the cooling assembly includes a cooling plate, a first reinforcing beam structure and a second reinforcing beam structure. The cooling plate is in contact with and connected to the battery pack; the first reinforcing beam structure includes a plurality of first cross beams, and the multiple battery packs and the multiple first cross beams are respectively installed on the cooling plate in an interval arrangement along a first direction, and the ends of the battery packs along the first direction are connected to the first cross beams; the second reinforcing beam structure includes a longitudinal beam, and the longitudinal beam is installed on a side wall of the cooling plate away from the battery pack in a direction perpendicular to the first direction.

2. The cooling assembly according to claim 1, characterized in that: The cooling assembly also includes a third reinforcing beam structure, which includes a plurality of second cross beams, which are installed on a side wall of the cooling plate away from the battery pack at intervals along a first direction, and the two ends of the second cross beams are respectively connected to the two longitudinal beams.

3. The cooling assembly according to claim 2, characterized in that: The second crossbeam includes a crossbeam body, a first connecting portion and a second connecting portion. The two first connecting portions are respectively arranged at both ends of the crossbeam body along a direction perpendicular to the first direction, and the first connecting portion is welded and fixed to the longitudinal beam. The second connecting portion is arranged at the end of the crossbeam body along the first direction, and the second connecting portion is connected to the cooling plate through a first fastener.

4. The cooling assembly according to claim 2, characterized in that: The cooling assembly further includes a reinforcement portion, a middle portion of the second cross beam protrudes upward to form the reinforcement portion, and the reinforcement portion is connected to the cooling plate.

5. The cooling assembly according to claim 1, characterized in that: The cross section of the first crossbeam along the first direction is a rectangular structure, and the first crossbeam is fixed to the cooling plate by a second fastener.

6. The cooling assembly according to claim 2, characterized in that: The longitudinal beam extends along the first direction; the side wall of the longitudinal beam away from the battery pack has a first step surface and a second step surface, the first step surface and the second step surface are arranged perpendicular to the first direction, the bottom surface of the second step surface in the vertical height is lower than the bottom surface of the first step surface, and the second step surface is connected to the second cross beam.

7. The cooling assembly according to claim 1, characterized in that: The bottom wall of the longitudinal beam is provided with a hoisting hole.

8. The cooling assembly according to any one of claims 1 to 7, characterized in that: The cooling plate includes a flat plate, a flow channel plate and two joints. The flow channel plate is arranged on a side of the flat plate away from the battery pack. The flow channel plate has a flow channel portion, and the flow channel portion is sealed and connected to the flat plate so that the cooling plate forms a cooling cavity for the circulation of coolant at the flow channel portion. One end of the two joints is installed on the flat plate and connected to the cooling cavity, and the other end of the two joints is used to connect to the liquid cooling unit.

9. An energy storage battery assembly, characterized in that: It comprises a plurality of battery packs and a cooling assembly as described in any one of claims 1 to 8, and further comprises an upper cover and a plurality of end plates, wherein the upper cover has a containing cavity, the upper cover is arranged on the cooling assembly, and the plurality of battery packs are located in the containing cavity; the end plates are arranged on opposite sides of the battery pack along the first direction, and the battery pack is connected to the first crossbeam of the cooling assembly through the end plates.

10. The energy storage battery assembly according to claim 9, characterized in that: It also includes a plurality of binding members and a plurality of flexible pads, wherein the flexible pads are arranged between the battery pack and the end plates, and the binding members are arranged around the battery pack, the flexible pads and the end plates.

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