High-pressure cascade energy storage container and energy storage system

Abstract

The invention discloses a high-voltage cascade energy storage container and an energy storage system.The high-voltage cascade energy storage container comprises a container body, a battery rack and an insulation structure, the battery rack is arranged in the container body, the first side portion of the battery rack is spaced from the side wall of the container body, and the top of the battery rack is spaced from the top wall of the container body; the insulating structure comprises a plurality of first insulating parts, the plurality of first insulating parts are arranged on the bottom wall of the box body at intervals, the tops of the plurality of first insulating parts abut against the bottom of the battery rack so as to support the battery rack, and the bottom of the battery rack is separated from the bottom wall of the box body; the peripheral side of the first insulating part is provided with an anti-creepage structure. According to the technical scheme, the creepage risk can be reduced, and the insulation effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a high-voltage cascade energy storage container and an energy storage system. Background Art

[0002] With the rapid development of the energy storage industry, energy storage technology has gradually evolved from common low-voltage centralized, distributed, and intelligent string systems to high voltage, large capacity, and fast response. In high-voltage cascade energy storage systems, insulation structures are often required to ensure reliable operation. In related technologies, battery racks are supported by insulating blocks, separating the battery racks from the housing. However, this insulation method is affected by the environment (such as air humidity) and still poses a certain risk of creepage during actual use.

[0003] It should be noted that the information disclosed in the background technology section of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the Invention

[0004] The main purpose of the present invention is to propose a high-voltage cascade energy storage container, aiming to reduce the risk of creepage and improve the insulation effect.

[0005] To achieve the above objectives, the present invention proposes a high-voltage cascade energy storage container, comprising:

[0006] Box;

[0007] a battery rack disposed in the box, wherein a first side portion of the battery rack is spaced from a side wall of the box, and a top portion of the battery rack is spaced from a top wall of the box; and

[0008] The insulating structure includes a plurality of first insulating members, which are arranged at intervals on the bottom wall of the box body, and the tops of the plurality of first insulating members abut against the bottom of the battery rack to support the battery rack and space the bottom of the battery rack from the bottom wall of the box body; the surrounding side of the first insulating member has an anti-creeping structure.

[0009] Optionally, the first insulating member includes a first insulating body and a plurality of first insulating partitions, wherein the plurality of first insulating partitions are transversely arranged on a circumferential side of the first insulating body and are spaced apart in an up-and-down direction.

[0010] Optionally, the first insulating body is plate-shaped and has two first side portions opposite to each other and extending in the up-down direction. The first side portions are provided with a plurality of first notches, and the plurality of first notches are spaced apart along the up-down direction. The two opposite plate surfaces of the first insulating body are provided with a plurality of first insulating partitions.

[0011] Optionally, an end surface of the first insulating spacer is flush with the first side portion, and a plurality of first notches are provided on the first side portion between two adjacent first insulating spacers.

[0012] Optionally, the first insulating member further includes a support top plate and a support bottom plate, the support top plate is arranged at the top end of the first insulating body, the top surface of the support top plate abuts against the bottom of the battery rack, the support bottom plate is arranged at the bottom end of the first insulating body, the bottom surface of the support bottom plate abuts against the bottom wall; the thickness of the support top plate and the support bottom plate are both greater than the thickness of the first insulating partition.

[0013] Optionally, the first insulating partition is integrally formed with the first insulating body.

[0014] Optionally, the insulation structure further includes a plurality of second insulation members, which are spaced apart and abutted between the top of the battery rack and the top wall to separate the top of the battery rack from the top wall, and the peripheral side of the second insulation members has an anti-creeping structure.

[0015] Optionally, the insulating structure further includes a plurality of third insulating members, which are connected between the battery rack and the side wall; the battery rack includes a plurality of frames, each of which has a plurality of battery positions, and the plurality of battery positions are distributed in the up and down directions; a plurality of frames are spaced apart in the length direction of the box, and the insulating structure further includes a fourth insulating member, and a plurality of the fourth insulating members are provided between any two adjacent frames spaced apart in the length direction of the box, and both ends of the fourth insulating member are respectively fixed to the corresponding frames.

[0016] Optionally, the high-voltage cascade energy storage container also includes a liquid cooling pipeline, which is arranged on the front side of the battery rack; the battery rack has an installation position and multiple battery positions located above the installation position, each of the battery positions is used for installing a battery box, and the installation position is used for installing a high-voltage box. There is a wiring space between the battery rack and the bottom wall of the box body, and a wire hole is provided at the bottom of the installation position and close to the front side of the battery rack, and the wire hole is connected to the wiring space.

[0017] The present invention also provides an energy storage system, comprising a plurality of battery boxes and the high-voltage cascade energy storage container as described above, wherein the battery boxes are installed on a battery rack of the high-voltage cascade energy storage container.

[0018] The technical solution of the present invention utilizes multiple first insulating members to support the battery rack within the container, separating the battery rack from the bottom, top, and side walls of the container. This utilizes air for insulation, reducing the amount of insulation structure required at the bottom, top, and first side of the battery rack. This reduces the amount of insulation material and the installation structure, thus lowering the production cost of high-voltage cascade energy storage containers. Furthermore, by providing anti-creeping structures around the first insulating members, the creepage distance between the battery rack and the bottom wall of the container is increased, reducing the risk of creepage, improving insulation effectiveness, and enhancing the safety of the high-voltage cascade energy storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of an energy storage system according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the energy storage system after the box door is removed;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 for Figure 3 A schematic structural diagram of the first insulating member;

[0024] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0025] Figure 6 for Figure 2 Cross-sectional view of the energy storage system;

[0026] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0027] Description of Figure Numbers:

[0028] 10. Box body; 11. Top wall; 12. Bottom wall; 13. Box door; 14. Support beam; 15. Wiring space; 20. Battery rack; 21. Frame; 211. Mounting position; 212. Battery position; 213. Wire hole; 30. Liquid cooling pipeline; 31. Main pipeline; 32. Branch pipeline; 33. Connector assembly; 41. High-voltage box; 42. Battery box; 43. Cable; 52. First insulating member; 521. First insulating body; 522. First side; 523. First notch; 524. First insulating partition; 525. Support top plate; 526. Support bottom plate; 53. Second insulating member; 55. Fourth insulating member; 62. Fire protection pipeline.

[0029] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention provides a high-voltage cascade energy storage container for use in an energy storage system.

[0034] In the embodiment of the present invention, Figures 1 to 7 As shown, the high-voltage cascade energy storage container includes a box body 10, a battery rack 20 and an insulation structure. The box body 10 has a bottom wall 12, a top wall 11 and multiple side walls located between the top wall 11 and the bottom wall 12; the battery rack 20 is arranged in the box body 10, the first side portion 522 of the battery rack 20 is spaced from the side wall, and the top of the battery rack 20 is spaced from the top wall 11; the insulation structure includes a plurality of first insulating members 52, and the plurality of first insulating members 52 are arranged at intervals on the bottom wall 12, and the tops of the plurality of first insulating members 52 abut against the bottom of the battery rack 20 to support the battery rack 20 and space the bottom of the battery rack 20 from the bottom wall 12; the surrounding side of the first insulating member 52 has an anti-creeping structure.

[0035] Specifically, the first insulating member 52 is made of a high-strength insulating material, such as, but not limited to, sheet molding compound (SMC) or polyimide. The spacing between the battery rack 20 and the bottom wall 12 can be adjusted by using first insulating members 52 of varying heights, specifically as needed. The gap between the battery rack 20 and the sidewalls can also be adjusted as needed, ensuring that the electrical clearance between the battery rack 20 and the housing 10 meets insulation requirements.

[0036] The technical solution of the present invention uses multiple first insulating members 52 to support the battery rack 20 within the box 10, and separates the battery rack 20 from the bottom wall 12, top wall 11, and side walls of the box 10. This uses air for insulation. Whether at the bottom, top, or first side 522 of the battery rack 20, the layout of the insulation structure can be reduced, thereby reducing the amount of insulation material and the installation structure, and reducing the production cost of the high-voltage cascade energy storage container. By providing an anti-creeping structure around the side of the first insulating member 52, the creepage distance between the battery rack 20 and the bottom wall 12 of the box 10 can be increased, thereby reducing the risk of creepage, improving the insulation effect, and enhancing the safety of the high-voltage cascade energy storage container.

[0037] In some embodiments, the first insulating member 52 includes a first insulating body 521 and a plurality of first insulating partitions 524. The plurality of first insulating partitions 524 are horizontally arranged on the circumference of the first insulating body 521 and are spaced apart in the vertical direction. Specifically, the first insulating body 521 extends in the vertical direction and is mainly used to support the battery rack 20. The plurality of first insulating partitions 524 form an anti-creeping structure. Compared with the method of providing an annular groove or annular rib on the outer peripheral surface of the first insulating member 52 to form an anti-creeping structure, the width of the first insulating partition 524 (i.e., the protruding height compared to the outer peripheral surface of the first insulating body 521) can be larger. When the height of the first insulating member 52 is constant, the creepage distance can be increased.

[0038] In some embodiments, the first insulating body 521 is plate-shaped and has two opposing first side portions 522 extending in the vertical direction. The first side portions 522 are provided with a plurality of first notches 523, which are spaced apart in the vertical direction. Multiple first insulating spacers 524 are provided on two opposing surfaces of the first insulating body 521. Specifically, the first insulating spacers 524 are provided on opposing sides of the first insulating body 521 in a one-to-one correspondence, and the first notches 523 extend through the surface of the first insulating body 521 where the first insulating spacers 524 are located. The multiple first notches 523 and the multiple first insulating spacers 524 together form an anti-creeping structure. By providing the first insulating body 521 with a plate-like shape, the thickness difference between the first insulating body 521 and the first insulating plate can be reduced, thereby preventing deformation of the first insulating member 522 during molding due to the excessive thickness difference between the first insulating body 521 and the first insulating plate, thereby improving the structural reliability of the first insulating member 52. In addition, since the first insulating body 521 is plate-shaped, in order to ensure the supporting strength of the first insulating body 521, the length of the first insulating body 521 is greater than the height of the first insulating body 521. A plurality of first notches 523 are provided on the first side portion 522, which can reduce or even avoid the protrusion of the first insulating partition 524 compared to the first side portion 522, and reduce the length of the first insulating partition 524, which is beneficial to reducing the risk of deformation during the molding of the first insulating member 52.

[0039] Of course, in other embodiments, the first insulating partition 524 may be annular and disposed around the first insulating body 521. The first insulating body 521 may also be cylindrical or prismatic.

[0040] In some embodiments, the end surfaces of the first insulating spacers 524 are flush with the first side portion 522, and a plurality of first notches 523 are defined on the first side portion 522 between adjacent first insulating spacers 524. This prevents the first insulating spacers 524 from protruding relative to the first side portion 522 and increases the creepage distance from the top to the bottom of the first side portion 522. Of course, in other embodiments, the first insulating spacers 524 may also protrude relative to the first side portion 522.

[0041] In some embodiments, the first insulating member 52 further includes a support top plate 525 and a support bottom plate 526. The support top plate 525 is disposed at the top of the first insulating body 521, with the top surface of the support top plate 525 abutting the bottom of the battery rack 20. The support bottom plate 526 is disposed at the bottom of the first insulating body 521, with the bottom surface of the support bottom plate 526 abutting the bottom wall 12. The thickness of the support top plate 525 and the support bottom plate 526 is greater than the thickness of the first insulating spacer 524. Specifically, as load-bearing components, the greater thickness of the support top plate 525 and the support bottom plate 526 helps to improve the structural strength of the first insulating member 52 and enhance the supporting effect. By making the first insulating spacer 524 smaller, the number of first insulating spacers 524 can be increased while maintaining the height of the first insulating body 521, thereby increasing the creepage distance. The support top plate 525 and the top wall 11 of the box body 10 can be connected by screws or locked by clamps; similarly, the support bottom plate 526 and the bottom wall 12 of the box body 10 can be connected by screws or locked by clamps.

[0042] In some embodiments, the first insulating spacer 524 is integrally formed with the first insulating body 521. This ensures a secure connection between the first insulating spacer 524 and the first insulating body 521 and reduces assembly steps. Of course, in other embodiments, the first insulating spacer 524 can also be welded or bonded to the circumference of the first insulating body 521.

[0043] In some embodiments, the bottom wall 12 has multiple support beams 14. The lower end of the first insulating member 52 abuts against the support beams 14. The first insulating body 521 extends along the length of the support beams 14. The width of the first insulating member 52 (supporting base plate 526) is no less than the width of the support beams 14. This arrangement enhances the structural strength of the bottom wall 12 of the housing 10, increases the contact area between the first insulating member 52 and the battery rack 20 and support beams 14, and ensures stable installation of the battery rack 20.

[0044] In some embodiments, the insulation structure further includes a plurality of second insulating members 53, which are spaced apart and abutted between the top of the battery rack 20 and the top wall 11 to space the top of the battery rack 20 from the top wall 11, and the peripheral side of the second insulating member 53 has an anti-creeping structure. By supporting the second insulating member 53 between the top wall 11 of the box body 10 and the battery rack 20, the fixing effect of the battery rack 20 can be improved, and the risk of deformation of the top wall 11 of the box body 10, which leads to a reduction in the distance between the top wall 11 of the box body 10 and the battery rack 20, can be reduced. At the same time, by providing an anti-creeping structure on the peripheral side of the second insulating member 53, the creepage distance between the battery rack 20 and the top wall 11 of the box body 10 can be increased, thereby reducing the risk of creepage, improving the insulation effect, and improving the safety of the high-voltage cascade energy storage container.

[0045] In some embodiments, the second insulating member 53 includes a second insulating body and a plurality of second insulating partitions (referring to the structure of the first insulating member 52). The plurality of second insulating partitions are arranged transversely around the circumference of the second insulating body and are spaced apart in the vertical direction. Specifically, the second insulating body extends in the vertical direction and is mainly used to support the battery rack 20. The plurality of second insulating partitions form an anti-creeping structure. Compared with the method of providing an annular groove or annular rib on the outer circumference of the second insulating member 53 to form an anti-creeping structure, this method can make the width of the second insulating partition (i.e., the protrusion height compared to the outer circumference of the second insulating body) larger, and when the height of the second insulating member 53 is constant, the creepage distance can be increased.

[0046] In some embodiments, the second insulating body is plate-shaped and has two opposing second side portions extending in the vertical direction. The second side portions are provided with a plurality of second notches, which are spaced apart in the vertical direction. Multiple second insulating spacers are provided on each of the two opposing surfaces of the second insulating body. Specifically, the second insulating spacers are provided on opposite sides of the second insulating body in a one-to-one correspondence, and the second notches extend through the surface of the second insulating body where the second insulating spacers are located. The multiple second notches and the multiple second insulating spacers together form an anti-creepage structure. By providing the second insulating body in a plate-like shape, the thickness difference between the second insulating body and the second insulating plates can be reduced, thereby preventing deformation of the second insulating member 53 during molding due to the excessive thickness difference between the second insulating body and the second insulating plates, and improving the structural reliability of the second insulating member 53. Furthermore, since the second insulating body is plate-shaped, to ensure the supporting strength of the second insulating body, the length of the second insulating body is greater than its height. By providing the multiple second notches on the second side portions, the protrusion of the second insulating spacers relative to the second side portions can be reduced or even eliminated, thereby reducing the length of the second insulating spacers and reducing the risk of deformation of the second insulating member 53 during molding.

[0047] Of course, in other embodiments, the second insulating partition may be annular and disposed around the second insulating body. The second insulating body may also be cylindrical or prismatic.

[0048] In some embodiments, the end surfaces of the second insulating spacers are flush with the second side portion, and a plurality of second notches are provided on the second side portion between adjacent second insulating spacers. This prevents the second insulating spacers from protruding relative to the second side portion and increases the creepage distance from the top to the bottom of the second side portion. Of course, in other embodiments, the second insulating spacers may also protrude relative to the second side portion.

[0049] In some embodiments, the second insulating member 53 further includes a top plate and a bottom plate. The top plate is disposed at the top of the second insulating body, with its top surface abutting the bottom of the battery rack 20. The bottom plate is disposed at the bottom of the second insulating body, with its bottom surface abutting the bottom wall 12. The thickness of both the top plate and the bottom plate is greater than the thickness of the second insulating spacer. Specifically, as load-bearing components, the greater thickness of the top and bottom plates helps improve the structural strength of the second insulating member 53 and enhances its support effect. By reducing the size of the second insulating spacer, a larger number of second insulating spacers can be used while maintaining a constant height of the second insulating body, thereby increasing the creepage distance.

[0050] In some embodiments, the second insulating spacer is integrally formed with the second insulating body, which ensures a reliable connection between the second insulating spacer and the second insulating body and reduces assembly steps. Of course, in other embodiments, the second insulating spacer can also be welded or bonded to the circumference of the second insulating body.

[0051] In some embodiments, the insulation structure further includes a plurality of third insulating members connected between the battery rack 20 and the sidewalls. Specifically, the third insulating members can further secure the battery rack 20 and improve the installation stability of the battery rack 20. Optionally, the third insulating members are secured to the battery rack 20 using screws and bolts.

[0052] In some embodiments, the side walls extending along the length of the box body 10 include multiple vertical beams and multiple box doors 13. The vertical beams connect the top wall 11 and the bottom wall 12. The multiple vertical beams are spaced apart along the length of the box body 10. At least one box door 13 is provided between any two adjacent vertical beams, and a third insulating member is provided between the vertical beams and the battery rack 20. That is, the box door 13 is rotatably mounted on the vertical beams to open or close the inner cavity of the box body 10. By arranging the third insulating member between the vertical beams and the battery rack 20 in this way, interference between the third insulating member and the box door 13 can be avoided. While ensuring the stable installation of the battery rack 20, it is convenient to open the box door 13 to disassemble and install the battery box 42 and perform maintenance and repairs.

[0053] In some embodiments, the battery rack 20 includes a plurality of racks 21, each rack 21 has a plurality of battery positions 212, and the plurality of battery positions 212 are distributed in the up and down direction; a plurality of racks 21 are spaced apart in the length direction of the box 10, and the insulating structure further includes a fourth insulating member 55, and a plurality of fourth insulating members 55 are provided between any two adjacent racks 21 spaced apart in the length direction of the box 10, and the two ends of the fourth insulating member 55 are respectively fixed to the corresponding rack 21. That is, the battery rack 20 is composed of a plurality of independent racks 21, which is convenient for production and transportation. During installation, the two adjacent racks 21 are connected by the fourth insulating member 55, which can achieve insulation between the two adjacent racks 21 while making each rack 21 stably installed. Among them, a plurality of first insulating members 52 are provided at the bottom of each rack 21.

[0054] In some embodiments, a vertical beam is provided corresponding to the gap between two adjacent frames 21, and the end of the third insulating member away from the vertical beam connects the two adjacent frames 21. This further secures the two adjacent frames 21 together, further improving the installation stability of the battery rack 20. Optionally, two rows of frames 21 are spaced apart along the width of the box 10. With this arrangement, doors 13 can be provided on both sides of the box 10 to facilitate disassembly and installation of the battery box 42 and inspection and maintenance.

[0055] The present invention also proposes an energy storage system, which includes multiple battery boxes 42 and a high-voltage cascade energy storage container. The specific structure of the high-voltage cascade energy storage container refers to the above-mentioned embodiment. Since this energy storage system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described in detail here. Among them, the battery box 42 is installed on the battery rack 20 of the high-voltage cascade energy storage container. Specifically, the battery rack 20 is provided with multiple battery positions 212, and each battery box 42 is installed in a battery position 212.

[0056] In some embodiments, the energy storage system includes a liquid cooling pipeline 30 and a high-voltage box 41, the battery rack 20 is arranged in the box body 10, the battery rack 20 has an installation position 211 and multiple battery positions 212 located above the installation position 211, and each battery box 42 is installed corresponding to a battery position 212; the liquid cooling pipeline 30 is arranged on the front side of the battery rack 20; there is a wiring space 15 between the battery rack 20 and the bottom wall 12 of the box body 10, and a wire hole 213 is provided at the bottom of the installation position 211 and near the front side of the battery rack 20; the high-voltage box 41 is installed at the installation position 211 and is spaced from the front side of the battery rack 20, and the wire hole 213 is at least partially located on the front side of the high-voltage box 41.

[0057] Specifically, the box body 10 has a box door 13, which is arranged corresponding to the front side of the battery rack 20 (the front side of the battery rack 20, i.e., the side of the battery rack 20 facing the corresponding box door 13), that is, the liquid cooling pipeline 30 is located between the battery rack 20 and the box door 13, and the wiring space 15 is located on the side of the liquid cooling pipeline 30 away from the box door 13. When the high-voltage box 41 is installed in the installation position 211, the front side of the high-voltage box 41 is spaced from the front side of the battery rack 20, and the wire hole 213 is at least partially located between the front side of the high-voltage box 41 and the front side of the battery rack 20. A cable 43 connector is provided on the front side of the high-voltage box 41, and the cable 43 connected to the cable 43 connector extends from the wire hole 213 into the wiring space 15, thereby avoiding interference between the cable 43 of the high-voltage box 41 and the liquid cooling pipeline 30. It is convenient for arranging the cables 43 and the liquid cooling pipes 30, and there is no need to set up a space between the liquid cooling pipes 30 and the battery rack 20 for the cables 43 to pass through, which can improve the structural compactness of the energy storage system and is conducive to improving the capacity of the energy storage system.

[0058] In this embodiment, the energy storage system also includes a fire protection container and a fire protection pipe 62. The fire protection container is located on one side of the battery rack 20. The fire protection pipe 62 extends from above the battery rack 20 to each battery box 42. The battery box 42 has a fire protection interface connected to the fire protection pipe 62. This ensures that the cavity within the housing 10 where the battery box 42 is installed is relatively sealed, improving the insulation and safety of the energy storage system.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high-voltage cascade energy storage container, characterized in that: include: Box; A battery rack is disposed in the box, wherein a first side portion of the battery rack is spaced from a side wall of the box, and a top portion of the battery rack is spaced from a top wall of the box; as well as The insulating structure includes a plurality of first insulating members, which are arranged at intervals on the bottom wall of the box body, and the tops of the plurality of first insulating members abut against the bottom of the battery rack to support the battery rack and space the bottom of the battery rack from the bottom wall of the box body; the surrounding side of the first insulating member has an anti-creeping structure.

2. The high-voltage cascade energy storage container according to claim 1, characterized in that: The first insulating member includes a first insulating body and a plurality of first insulating partitions, wherein the plurality of first insulating partitions are transversely arranged on the peripheral side of the first insulating body and are spaced apart in the up-and-down direction.

3. The high-voltage cascade energy storage container according to claim 2, characterized in that: The first insulating body is plate-shaped and has two first side portions opposite to each other and extending in the up-down direction. The first side portions are provided with a plurality of first notches, which are spaced apart in the up-down direction. The two opposite plate surfaces of the first insulating body are provided with a plurality of first insulating partitions.

4. The high-voltage cascade energy storage container according to claim 3, characterized in that: The end surface of the first insulating partition is flush with the first side portion, and a plurality of first notches are provided on the first side portion between two adjacent first insulating partitions.

5. The high-voltage cascade energy storage container according to claim 3, characterized in that: The first insulating member further comprises a supporting top plate and a supporting bottom plate, wherein the supporting top plate is arranged at the top end of the first insulating body, the top surface of the supporting top plate abuts against the bottom of the battery rack, and the supporting bottom plate is arranged at the bottom of the first insulating body, the bottom surface of the supporting bottom plate abuts against the bottom wall; The thickness of the supporting top plate and the supporting bottom plate are both greater than the thickness of the first insulating spacer.

6. The high-voltage cascade energy storage container according to claim 2, characterized in that: The first insulating partition is integrally formed with the first insulating body.

7. The high-voltage cascade energy storage container according to claim 1, characterized in that: The insulating structure also includes a plurality of second insulating members, which are spaced apart and abutted between the top of the battery rack and the top wall to space the top of the battery rack from the top wall. The peripheral side of the second insulating members has an anti-creeping structure.

8. The high-voltage cascade energy storage container according to any one of claims 1 to 7, characterized in that: The insulating structure further includes a plurality of third insulating members, wherein the third insulating members are connected between the battery rack and the side wall; The battery rack includes a plurality of rack bodies, each of which has a plurality of battery positions, and the plurality of battery positions are distributed in an up-and-down direction; A plurality of the frames are spaced apart in the length direction of the box, and the insulating structure further comprises a fourth insulating member. A plurality of the fourth insulating members are arranged between any two adjacent frames spaced apart in the length direction of the box, and both ends of the fourth insulating member are respectively fixed to the corresponding frames.

9. The high-voltage cascade energy storage container according to claim 1, characterized in that: The high-voltage cascade energy storage container also includes a liquid cooling pipeline, which is arranged on the front side of the battery rack; the battery rack has a mounting position and a plurality of battery positions located above the mounting position, each of the battery positions is used for installing a battery box, the mounting position is used for installing a high-voltage box, and there is a wiring space between the battery rack and the bottom wall of the box body, and a wiring hole is provided at the bottom of the mounting position and close to the front side of the battery rack, and the wiring hole is connected to the wiring space.

10. An energy storage system, characterized in that: It comprises a plurality of battery boxes and a high-voltage cascade energy storage container as claimed in any one of claims 1 to 9, wherein the battery boxes are installed on a battery rack of the high-voltage cascade energy storage container.

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