Insulation structure of energy storage battery pack liquid cooling plate and energy storage battery pack

Abstract

The utility model provides an insulation structure and energy storage battery pack of energy storage battery pack liquid cooling board, energy storage battery pack liquid cooling board's insulation structure includes: liquid cooling board, crossbeam is connected with liquid cooling board, insulation coating, liquid cooling board and crossbeam all are provided with insulation coating, insulation filling glue water structure, liquid cooling board and the connecting position of crossbeam have the joint, and insulation filling glue water structure fills setting in the joint, and the ratio between the thickness of insulation coating and the thickness of insulation filling glue water structure is in the range of greater than or equal to 0.35 and less than or equal to 0.75. The utility model solves the problem of poor insulation effect of the insulation structure of the energy storage battery pack liquid cooling board in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to an insulation structure for a liquid cooling plate of an energy storage battery pack and an energy storage battery pack. Background Technology

[0002] In the design of energy storage battery packs, the liquid cooling plate, as a key component of the thermal management system, has insulation performance that is crucial to the safety of the entire pack. Currently, the industry standard for the insulation structure of liquid cooling plates in energy storage battery packs involves spraying a high-temperature resistant and electrically insulating powder coating onto the surface of the liquid cooling plate and crossbeams to prevent conduction caused by direct contact between the liquid cooling plate and the battery cells inside the pack. However, this method has significant limitations and drawbacks in practical applications.

[0003] Specifically, due to the gaps between the liquid cooling plate and the crossbeam, surface coating alone cannot effectively insulate these gaps. When changes occur in the internal environment of the energy storage battery pack, especially when high-temperature liquids (such as electrolyte and coolant) caused by thermal runaway of the cells overflow and seep into the interface between the bottom of the liquid cooling plate and the crossbeam, a conductive path may be formed, indirectly connecting the cells to the liquid cooling plate and creating a risk of the battery pack casing becoming electrified. This risk not only threatens the safety of the battery pack but may also pose a safety hazard to the user.

[0004] In other words, the insulation structure of the liquid cooling plate in the existing energy storage battery pack has the problem of poor insulation performance. Utility Model Content

[0005] The main objective of this invention is to provide an insulation structure for a liquid cooling plate of an energy storage battery pack and an energy storage battery pack, so as to solve the problem of poor insulation performance in the insulation structure of the liquid cooling plate of the energy storage battery pack in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, an insulating structure for a liquid cooling plate of an energy storage battery pack is provided, comprising: a liquid cooling plate; a crossbeam connected to the liquid cooling plate; an insulating coating provided on both the liquid cooling plate and the crossbeam; and an insulating filler adhesive structure, wherein the connection between the liquid cooling plate and the crossbeam has a joint, and the insulating filler adhesive structure is provided at the joint, wherein the ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure is greater than or equal to 0.35 and less than or equal to 0.75.

[0007] Furthermore, the ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure is in the range of greater than or equal to 0.39 and less than or equal to 0.65.

[0008] Furthermore, the thickness of the insulating coating is in the range of greater than or equal to 0.9 mm and less than or equal to 1.1 mm.

[0009] Furthermore, the thickness of the insulating filler adhesive structure is within the range of greater than or equal to 1.7 mm and less than or equal to 2.3 mm.

[0010] Furthermore, the insulating coating on the liquid cooling plate is a first insulating coating, and at least the surface of the liquid cooling plate facing the crossbeam is covered with the first insulating coating. The insulating coating on the crossbeam is a second insulating coating, and at least the exposed surface of the crossbeam is covered with the second insulating coating.

[0011] Furthermore, the crossbeam is completely covered by a second insulating coating; and / or, the area of ​​the first insulating coating is greater than or equal to the area of ​​the side surface of the liquid cooling plate facing the crossbeam.

[0012] Furthermore, the insulation structure of the liquid cooling plate of the energy storage battery pack also includes a connecting structure, through which the crossbeam is fixedly connected to the liquid cooling plate.

[0013] Furthermore, the connecting structure includes one of screws and snap-fit ​​components. When the connecting structure is a screw, both the crossbeam and the liquid cooling plate have corresponding threaded holes. When the connecting structure is a snap-fit ​​component, one of the crossbeam and the liquid cooling plate has a snap-fit ​​groove, and the other of the crossbeam and the liquid cooling plate has a snap-fit ​​protrusion that mates with the snap-fit ​​groove.

[0014] Furthermore, there are multiple crossbeams, including a first crossbeam and a second crossbeam. The first crossbeam and the second crossbeam are respectively connected to a set of opposite edge portions of the liquid cooling plate. The first crossbeam is located closer to the front panel of the energy storage battery pack than the second crossbeam. Both the first crossbeam and the second crossbeam are provided with multiple connection structures. The number of connection structures on the first crossbeam may be the same as or different from the number of connection structures on the second crossbeam.

[0015] According to another aspect of the present invention, an energy storage battery pack is provided, comprising: a battery pack housing; a cell structure disposed within the battery pack housing; and an insulating structure for the aforementioned energy storage battery pack liquid cooling plate disposed within the housing.

[0016] The insulating structure of the liquid cooling plate of the energy storage battery pack using the technical solution of this utility model includes a liquid cooling plate, a crossbeam, an insulating coating, and an insulating filler adhesive structure. The crossbeam is connected to the liquid cooling plate. Both the liquid cooling plate and the crossbeam are provided with an insulating coating. There is a connection seam at the connection position between the liquid cooling plate and the crossbeam. The insulating filler adhesive structure is filled and disposed at the connection seam. The ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure is greater than or equal to 0.35 and less than or equal to 0.75.

[0017] This application effectively isolates metal components from direct contact with the electrolyte by applying an insulating coating to both the liquid cooling plate and the crossbeam. Even in abnormal situations such as electrolyte leakage, it significantly reduces the risk of short circuits and ensures the safe operation of the energy storage battery pack. By filling the joint between the liquid cooling plate and the crossbeam with an insulating adhesive structure, the joint is completely filled and sealed to isolate it from the outside environment. This fills the gaps in traditional insulation methods at the joint, forming a continuous insulating layer that further enhances insulation performance. Especially under complex operating conditions, such as battery thermal runaway, it effectively prevents current from being conducted through the liquid medium to the battery pack casing or other metal components.

[0018] By controlling the ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure, which is kept within the range of greater than or equal to 0.35 and less than or equal to 0.75, this ratio ensures sufficient insulation performance of the overall structure without compromising cooling efficiency due to an excessively thick insulation layer. This achieves an optimal balance between insulation and thermal management performance, while also guaranteeing a stable connection between the crossbeam and the liquid cooling plate. The insulating coating and insulating filler adhesive structure not only provide electrical isolation but also enhance the physical connection between the liquid cooling plate and the crossbeam, improving the structural stability and durability of the entire energy storage battery pack and reducing potential structural damage under vibration or shock environments. The controlled ratio of the insulating coating and insulating filler adhesive structure simplifies the production process and reduces manufacturing costs. Furthermore, controlling the thickness of the insulating coating and insulating filler adhesive structure simplifies quality control during production, improving the consistency and reliability of mass production.

[0019] In summary, the insulation structure of the liquid cooling plate for the energy storage battery pack proposed in this application optimizes the layout and thickness of the insulating coating and insulating filler adhesive structure by comprehensively utilizing various insulation methods. This not only greatly improves the safety performance of the energy storage battery pack under harsh conditions, but also takes into account heat dissipation efficiency and structural stability. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 An exploded view of the insulation structure of the liquid cooling plate of an energy storage battery pack according to an optional embodiment of the present invention is shown.

[0022] Figure 2 A cross-sectional schematic diagram of the insulation structure of the liquid cooling plate of an energy storage battery pack according to an optional embodiment of the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Liquid cooling plate; 21. First crossbeam; 22. Second crossbeam; 31. First insulating coating; 32. Second insulating coating; 40. Insulating filler adhesive structure. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] To address the problem of poor insulation performance in the insulation structure of liquid cooling plates in existing energy storage battery packs, this invention provides an insulation structure for liquid cooling plates in energy storage battery packs and an energy storage battery pack.

[0029] like Figure 1 and Figure 2 As shown, the insulation structure of the liquid cooling plate of the energy storage battery pack includes a liquid cooling plate 10, a crossbeam, an insulating coating, and an insulating filler adhesive structure 40. The crossbeam is connected to the liquid cooling plate 10. Both the liquid cooling plate 10 and the crossbeam are provided with an insulating coating. There is a connection seam at the connection position between the liquid cooling plate 10 and the crossbeam. The insulating filler adhesive structure 40 is filled and provided at the connection seam. The ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure 40 is greater than or equal to 0.35 and less than or equal to 0.75.

[0030] This application effectively isolates the direct contact between metal components and electrolyte by applying an insulating coating to both the liquid cooling plate 10 and the crossbeam. Even in abnormal situations such as electrolyte leakage, it significantly reduces the risk of short circuits and ensures the safe operation of the energy storage battery pack. By filling the joint between the liquid cooling plate 10 and the crossbeam with an insulating adhesive structure, the joint is completely filled and sealed to isolate it from the outside environment. This fills the gap at the joint in traditional insulation methods, forming a continuous insulating layer that further enhances insulation performance. Especially under complex operating conditions, such as battery thermal runaway, it effectively prevents current from being conducted through the liquid medium to the battery pack casing or other metal components.

[0031] By controlling the ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure 40, which is kept within a range of greater than or equal to 0.35 and less than or equal to 0.75, this ratio ensures sufficient insulation performance of the overall structure without compromising cooling efficiency due to an excessively thick insulation layer. This achieves an optimal balance between insulation and thermal management performance, while also ensuring a stable connection between the crossbeam and the liquid cooling plate 10. The insulating coating and insulating filler adhesive structure 40 not only provide electrical isolation but also enhance the physical connection between the liquid cooling plate 10 and the crossbeam, improving the structural stability and durability of the entire energy storage battery pack and reducing potential structural damage under vibration or shock environments. The set ratio of the insulating coating and insulating filler adhesive structure 40 simplifies the production process and reduces manufacturing costs. Controlling the thickness of the insulating coating and insulating filler adhesive structure 40 simplifies quality control during production, improving the consistency and reliability of mass production.

[0032] In summary, the insulation structure of the liquid cooling plate of the energy storage battery pack proposed in this application optimizes the layout and thickness of the insulating coating and insulating filler adhesive structure 40 by comprehensively utilizing various insulation methods. This not only greatly improves the safety performance of the energy storage battery pack under harsh conditions, but also takes into account heat dissipation efficiency and structural stability.

[0033] In a preferred embodiment of this application, the ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure 40 is greater than or equal to 0.39 and less than or equal to 0.65. This setting balances the thickness of the insulating coating and the insulating filler adhesive structure 40, ensuring a tight and effective seal at the joint while maintaining overall insulation performance. This prevents the penetration of coolant or electrolyte, significantly reducing the risk of short circuits in the energy storage battery pack under extreme conditions. An excessively thick insulating coating may hinder heat transfer, while an excessively thin coating may not provide sufficient insulation protection. Similarly, an excessively thick insulating filler adhesive structure 40 will increase thermal resistance. By adjusting the thickness ratio, this application maximizes heat dissipation while ensuring electrical safety, maintaining the optimal operating temperature of the battery cells, extending battery life, and improving battery performance. An appropriate thickness of the insulating filler adhesive structure 40 increases the structural rigidity at the connection between the liquid cooling plate 10 and the crossbeam, reducing minor displacements or structural changes caused by vibration during transportation or use, thereby enhancing the overall stability and durability of the energy storage battery pack.

[0034] Specifically, the thickness of the insulating coating is within the range of ≥0.9mm and ≤1.1mm. Specifically, the thickness of the insulating coating on the liquid cooling plate 10 and the insulating coating on the crossbeam are both within this range. By constraining the thickness of the insulating coating to within the range of ≥0.9mm and ≤1.1mm, sufficient electrical insulation is ensured, effectively isolating the liquid cooling plate 10 and crossbeam from the battery cells. Even under extreme conditions, such as electrolyte leakage or battery thermal runaway, the risk of short circuits is significantly reduced, ensuring the safety of the battery pack and the user. An excessively thick insulating coating increases thermal resistance, affecting the heat conduction efficiency of the liquid cooling plate 10 and thus reducing the heat dissipation performance of the battery pack; while an excessively thin coating makes it difficult to guarantee long-term effective insulation. A coating thickness of 0.9mm to 1.1mm ensures insulation performance while minimizing the impact on heat exchange, maintaining the efficient heat dissipation capacity of the liquid cooling system. The insulating coating within this thickness range exhibits excellent physical stability, maintaining its insulating properties throughout the entire battery pack's lifespan. It is less prone to performance degradation due to environmental changes or the passage of time, thus improving the durability of the insulation structure and the overall reliability of the battery pack. Simultaneously, it reduces the use of excessive materials, lowering manufacturing costs. Furthermore, it provides clear process guidance for production, facilitating the achievement of coating uniformity, reducing production defects, and improving yield and production efficiency.

[0035] Specifically, due to the elongated shape of the crossbeam, a quadrilateral joint is formed at the connection between the crossbeam and the liquid cooling plate 10. When the insulating filler adhesive structure 40 fills the joint, it naturally forms the same quadrilateral outline, ensuring complete coverage and effective insulation of the joint. The thickness of the insulating filler adhesive structure 40 is greater than or equal to 1.7 mm and less than or equal to 2.3 mm. This design allows the insulating filler adhesive structure 40 to form a sufficiently thick insulating layer, effectively isolating any electrical path between the liquid cooling plate 10 and the crossbeam. Especially when liquid may permeate between the liquid cooling plate 10 and the battery cell, this thickness standard helps to significantly reduce the risk of the energy storage battery pack becoming charged, ensuring user safety. The specific thickness can better fill the joint, forming a tight seal to prevent leakage of coolant or electrolyte, thereby avoiding degradation of insulation performance and damage to battery performance due to liquid permeation. The 2.3mm maximum thickness limit ensures sufficient insulation filling while avoiding the risks of reduced structural rigidity, increased weight, and decreased connection stability that might result from excessively thick insulation filler adhesive structures. This maintains the overall structural strength and stability of the energy storage battery pack. The minimum thickness of the adhesive structure is set at 1.7mm. This minimizes obstruction to the heat conduction path while ensuring electrical insulation, helping to maintain good heat dissipation efficiency, ensuring the energy storage battery pack operates at suitable temperatures, and extending its lifespan.

[0036] In a specific embodiment of this application, the insulating coating disposed on the liquid cooling plate 10 is a first insulating coating 31. At least the surface of the liquid cooling plate 10 facing the crossbeam is covered by the first insulating coating 31, and the area of ​​the first insulating coating 31 is greater than or equal to the area of ​​the surface of the liquid cooling plate 10 facing the crossbeam. In an optional embodiment of this application, the area of ​​the first insulating coating 31 is equal to the area of ​​the surface of the liquid cooling plate 10 facing the crossbeam. In another optional embodiment of this application, the area of ​​the first insulating coating 31 is greater than the area of ​​the surface of the liquid cooling plate 10 facing the crossbeam. Regardless of whether the area of ​​the first insulating coating 31 is greater than or equal to the area of ​​the surface of the liquid cooling plate 10 facing the crossbeam, the surface of the liquid cooling plate 10 facing the crossbeam is always completely covered by the first insulating coating 31. This can also be understood as the projection of the first insulating coating 31 onto the liquid cooling plate 10 completely covering the liquid cooling plate 10. This design ensures complete electrical isolation, improving insulation performance in direct contact areas and preventing electrolyte / coolant conduction risks. Furthermore, the complete coverage of the insulating coating enhances the environmental resistance of the liquid cooling plate 10, reducing insulation failure caused by corrosion or wear. This comprehensive protection strategy provides stronger safety and a longer service life for the energy storage battery pack.

[0037] Specifically, the insulating coating on the crossbeam is a second insulating coating 32, and at least the exposed surface of the crossbeam is covered with the second insulating coating 32. In one optional embodiment of this application, the exposed surface of the crossbeam is covered with the second insulating coating 32; in another optional embodiment, the crossbeam is completely covered by the second insulating coating 32. This arrangement enhances the electrical insulation of the crossbeam itself. Even if the insulating filler adhesive structure 40 is damaged, the second insulating coating 32 can still provide additional protection, significantly improving the overall safety of the energy storage battery pack. Furthermore, the second insulating coating 32, which completely covers the crossbeam, not only enhances electrical isolation but also forms a robust external protective layer, reducing the erosion of the crossbeam and its internal insulation structure by the external environment and extending the service life of the energy storage battery pack.

[0038] Specifically, the insulation structure of the liquid cooling plate of the energy storage battery pack also includes a connecting structure, through which the crossbeam is fixedly connected to the liquid cooling plate 10. The connecting structure includes either screws or snap-fit ​​components. When the connecting structure is a screw, both the crossbeam and the liquid cooling plate 10 have corresponding threaded holes. When the connecting structure is a snap-fit ​​component, one of the crossbeam and the liquid cooling plate 10 has a snap-fit ​​groove, and the other has a snap-fit ​​protrusion that mates with the snap-fit ​​groove. There are multiple crossbeams, including a first crossbeam 21 and a second crossbeam 22. The first crossbeam 21 is positioned closer to the front panel of the energy storage battery pack than the second crossbeam 22. The first crossbeam 21 and the second crossbeam 22 are respectively connected to a set of opposite edge portions on both sides of the liquid cooling plate 10. Multiple connecting structures are provided on both the first crossbeam 21 and the second crossbeam 22. The number of connecting structures on the first crossbeam 21 may be the same as or different from the number of connecting structures on the second crossbeam 22.

[0039] In one embodiment of this application, there are two crossbeams, namely a first crossbeam 21 and a second crossbeam 22, connected by screws. The first crossbeam 21 has eight screws, which are spaced apart along its extension direction. The second crossbeam 22 has nine screws, also spaced apart along its extension direction. In this case, the connection strength between the second crossbeam 22 and the liquid cooling plate 10 is greater than that between the first crossbeam 21 and the liquid cooling plate 10. Alternatively, the number of screws on the first crossbeam 21 and the second crossbeam 22 can be equal, in which case the connection strength between the first crossbeam 21 and the second crossbeam 22 and the liquid cooling plate 10 is the same.

[0040] In another embodiment of this application, there are two crossbeams, namely a first crossbeam 21 and a second crossbeam 22, connected by a snap-fit ​​mechanism. The first crossbeam 21 has one of multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves, and the liquid cooling plate 10 has another of multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves, with each of the multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves corresponding to each other. Similarly, the second crossbeam 22 has one of multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves, and the liquid cooling plate 10 has another of multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves, with each of the multiple snap-fit ​​protrusions and multiple snap-fit ​​grooves corresponding to each other.

[0041] It should be noted that the aforementioned liquid cooling plate 10 actually refers to the liquid cooling plate base plate, which adopts an integral design, meaning that the entire liquid cooling plate base plate is a complete single structure, ensuring structural integrity and enhanced liquid sealing performance.

[0042] In a specific embodiment of this application, the fabrication process of the insulation structure of the liquid cooling plate of the energy storage battery pack is as follows:

[0043] Step S1: Apply Reveal Insulate HR high-temperature insulating powder to the liquid cooling plate 10 and the crossbeam respectively to form an insulating coating on the crossbeam and the liquid cooling plate 10.

[0044] Step 2: Place the liquid cooling plate 10 and the crossbeam into a 200℃ oven and bake for 10 minutes.

[0045] Step 3: Then, use M5 screws with a torque of 4.5±0.5Nm to fix the liquid cooling plate 10 and the crossbeam into a whole.

[0046] Step 4: Then, apply insulating adhesive with a thickness of 1.7mm-2.3mm at the connection between the liquid cooling plate 10 and the crossbeam. The insulating adhesive can be alumina adhesive or inorganic ceramic adhesive, so that the connection seam is completely filled with insulating adhesive to form an insulating filling adhesive structure 40.

[0047] The insulation structure of the liquid cooling plate of the energy storage battery pack, fabricated through the above steps, ensures that the liquid cooling plate 10 maintains good insulation performance even when immersed in liquid. Reveal Insulate HR insulating powder and alumina / inorganic ceramic adhesive possess both superior high-temperature resistance and excellent insulation properties, significantly improving the insulation performance of the liquid cooling plate 10 during cell thermal runaway. Furthermore, this insulation solution allows for precise control of the coating thickness, providing a uniform insulation layer; with proper processing, 100% insulation of the liquid cooling plate 10 can be achieved.

[0048] This application also provides an energy storage battery pack, including a battery pack housing, a cell structure, and an insulation structure for the aforementioned energy storage battery pack liquid cooling plate. The cell structure is housed within the battery pack housing; the insulation structure, housed within the housing, is used to cool the cell structure. By integrating the insulation structure of the energy storage battery pack liquid cooling plate, the overall safety and thermal management efficiency of the energy storage battery pack are significantly improved. This design not only effectively prevents accidental conduction between the cell structure and the liquid cooling plate 10, ensuring user safety, but also ensures the stable performance of the cells under high-temperature conditions, extending the service life of the energy storage battery pack. The fine layout of the insulation structure allows for efficient circulation of the coolant, precisely regulating the cell temperature, thereby improving energy output efficiency and battery pack reliability.

[0049] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An insulation structure for a liquid cooling plate of an energy storage battery pack, characterized in that, include: Liquid cooling plate (10); A crossbeam, which is connected to the liquid cooling plate (10); Insulating coating, the liquid cooling plate (10) and the crossbeam are both provided with the insulating coating; An insulating filler adhesive structure (40) is provided, wherein the connection position between the liquid cooling plate (10) and the crossbeam has a joint, and the insulating filler adhesive structure (40) is filled in the joint. The ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure (40) is in the range of greater than or equal to 0.35 and less than or equal to 0.

75.

2. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 1, characterized in that, The ratio between the thickness of the insulating coating and the thickness of the insulating filler adhesive structure (40) is greater than or equal to 0.39 and less than or equal to 0.

65.

3. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 1, characterized in that, The thickness of the insulating coating is in the range of greater than or equal to 0.9 mm and less than or equal to 1.1 mm.

4. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 1, characterized in that, The thickness of the insulating filler adhesive structure (40) is in the range of greater than or equal to 1.7 mm and less than or equal to 2.3 mm.

5. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 1, characterized in that, The insulating coating disposed on the liquid cooling plate (10) is a first insulating coating (31), and at least the surface of the liquid cooling plate (10) facing the crossbeam is covered with the first insulating coating (31). The insulating coating disposed on the crossbeam is a second insulating coating (32), and at least the exposed surface of the crossbeam is covered with the second insulating coating (32).

6. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 5, characterized in that, The beam is completely covered by the second insulating coating (32); and / or, the area of ​​the first insulating coating (31) is greater than or equal to the area of ​​the side surface of the liquid cooling plate (10) facing the beam.

7. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 1, characterized in that, The insulation structure of the liquid cooling plate of the energy storage battery pack also includes a connecting structure, and the crossbeam is fixedly connected to the liquid cooling plate (10) through the connecting structure.

8. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 7, characterized in that, The connection structure includes one of screws and snap-fit ​​components. When the connecting structure is a screw, both the crossbeam and the liquid cooling plate (10) have corresponding threaded holes; When the connection structure is a snap-fit, one of the crossbeam and the liquid cooling plate (10) has a snap-fit ​​groove, and the other of the crossbeam and the liquid cooling plate (10) has a snap-fit ​​protrusion that engages with the snap-fit ​​groove.

9. The insulation structure of the liquid cooling plate of the energy storage battery pack according to claim 7, characterized in that, The crossbeams are multiple, including a first crossbeam (21) and a second crossbeam (22). The first crossbeam (21) and the second crossbeam (22) are respectively connected to a set of opposite edge portions of the liquid cooling plate (10). The first crossbeam (21) is located closer to the front panel of the energy storage battery pack than the second crossbeam (22). Both the first crossbeam (21) and the second crossbeam (22) are provided with multiple connection structures. The number of connection structures on the first crossbeam (21) is the same as or different from the number of connection structures on the second crossbeam (22).

10. An energy storage battery pack, characterized in that, include: Battery pack casing; A cell structure, wherein the cell structure is placed inside the battery pack housing; The insulating structure of the liquid cooling plate of the energy storage battery pack according to any one of claims 1 to 9, wherein the insulating structure is disposed within the housing.

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