Support frame for energy storage equipment and energy storage equipment

Abstract

The utility model belongs to the field of batteries, and particularly relates to a support frame for energy storage equipment and the energy storage equipment. And the problem that the energy storage equipment is easily limited by transportation, storage or use space due to higher height is solved. The support frame comprises three mounting brackets which are parallel to one another; each mounting bracket comprises a plurality of first supporting beams and a plurality of second supporting beams; the first supporting beams extend in the z direction, and the multiple first supporting beams are arranged in the y direction. The second supporting beams extend in the y direction, and the multiple second supporting beams are arranged in the z direction and fixed to the first supporting beams. And at least two battery pack assembly mounting positions which are arranged in the y direction are formed between the two second supporting beams, located on the same xy plane, of every two mounting brackets. On the premise of having the same number of battery pack assemblies, compared with the energy storage equipment of which each layer comprises one or two battery pack assemblies, the height of the whole energy storage equipment is reduced, so that the storage, the transportation and the use of the energy storage equipment are not easily limited by the height of a space environment.

Description

Technical Field

[0001] The utility model belongs to the field of batteries, and in particular relates to a support frame for energy storage equipment and energy storage equipment. Background Art

[0002] At present, with the continuous growth of global energy demand and the improvement of environmental protection awareness, energy storage technology has gradually become one of the important means to solve energy problems.

[0003] As a new type of energy storage equipment, energy storage containers have the advantages of portability, flexibility, and high efficiency, and are widely used in power systems, transportation, aerospace, and other fields. The existing energy storage containers on the market include a box body, a support frame located inside the box body, and multiple battery pack assemblies fixed on the support frame.

[0004] Each battery pack assembly is usually stacked from bottom to top, and each layer generally includes one or two battery pack assemblies. When there are multiple battery pack assemblies in the energy storage device, the height of such energy storage device is relatively high, making it susceptible to transportation, storage or usage space limitations. Utility Model Content

[0005] The utility model aims to provide a support frame for energy storage equipment and energy storage equipment, so as to overcome the problem that the energy storage equipment is easily restricted by the transportation, storage or use space due to its high height.

[0006] The first aspect of the utility model provides a support frame for energy storage equipment, the energy storage equipment includes a plurality of battery pack assemblies; the utility model is special in that: the support frame for energy storage equipment includes three mounting brackets parallel to each other;

[0007] Each mounting bracket includes a plurality of first support beams and a plurality of second support beams;

[0008] Each first support beam extends along the z direction, and a plurality of first support beams are arranged along the y direction;

[0009] Each second support beam extends along the y direction, and a plurality of second support beams are arranged along the z direction and fixed on the first support beam;

[0010] The mounting brackets are located between two second support beams in the same xy plane to form at least two battery pack assembly mounting positions arranged along the y direction.

[0011] The utility model sets three mounting brackets, and a large battery pack assembly accommodating space can be formed between two mounting brackets; in each large battery pack assembly accommodating space, at least two battery pack assembly mounting positions arranged along the y direction are formed between two second support beams located in the same xy plane; that is, the utility model can set multiple layers of battery pack assembly units stacked along the z direction in each large battery pack assembly accommodating space, and each layer of battery pack assembly units can include at least two battery pack assemblies arranged along the y direction; under the premise of having the same number of battery pack assemblies, compared with energy storage devices including one or two battery pack assemblies in each layer, the height of the entire energy storage device is reduced, so that its storage, transportation and use are not easily restricted by the height of the space environment.

[0012] Furthermore, the first support beam is square steel, the second support beam is angle steel, the vertical plate of the angle steel is fixed on the first support beam, and the transverse plate of the angle steel is used to support the battery pack assembly.

[0013] The second aspect of the utility model provides an energy storage device, which is special in that it includes the above-mentioned support frame for energy storage equipment and multiple battery pack assemblies, and at least two battery pack assemblies arranged along the y direction are fixed between two second support beams located in the same xy plane; the battery pack assemblies located on both sides of the middle mounting bracket are electrically connected through a first electrical connection plate.

[0014] Furthermore, the battery pack assembly includes a battery pack support frame and a plurality of battery modules connected in series and fixed on the battery pack support frame; the first electrical connection plate is connected in series between adjacent battery modules in the battery pack assembly located on both sides of the middle mounting bracket.

[0015] Furthermore, the battery pack assembly also includes a second electrical connection plate; one end of the second electrical connection plate is fixedly connected to the polarity terminal of the battery module near the middle mounting bracket, and the other end is fixedly connected to the first electrical connection plate.

[0016] Furthermore, it also includes an insulating plate arranged between the connection portion between the second electrical connection plate and the first electrical connection plate and the battery pack support frame.

[0017] Furthermore, the battery pack support frame is a rectangular frame, and rollers are provided at the bottom of the battery pack support frame relative to the two second side beams. The battery pack assembly can be transported to the battery pack assembly installation position by sliding installation, and positioned by a limiting device arranged on the installation bracket.

[0018] Furthermore, the battery pack assembly further comprises an explosion venting manifold; the explosion venting manifold is connected to the explosion venting pipe assembly of each battery module in the battery pack assembly;

[0019] The first side beam of the battery pack support frame is an I-shaped steel, and the explosion-proof manifold is embedded between the upper and lower flanges of the I-shaped steel.

[0020] Further, the battery pack assembly also includes a heat transfer tube assembly;

[0021] The heat transfer tube assembly includes a liquid inlet manifold, a liquid return manifold and a plurality of liquid cooling tubes;

[0022] A liquid cooling tube clamping part is provided on the polarity terminal of each battery module; a plurality of liquid cooling tubes are fixed on the liquid cooling tube clamping part of each battery module in a one-to-one correspondence, and the liquid cooling tubes are insulated from each battery module; the liquid inlet end of each liquid cooling tube is connected to the liquid inlet manifold, and the liquid outlet end of each liquid cooling tube is connected to the liquid return manifold;

[0023] The liquid inlet manifold and the liquid return manifold are embedded in the outer space between the upper and lower flanges of the I-shaped steel;

[0024] The explosion-relief manifold is embedded in the inner space between the upper and lower flanges of the I-shaped steel.

[0025] The beneficial effects of the utility model are:

[0026] The utility model sets three mounting brackets, and a large battery pack assembly accommodating space can be formed between two mounting brackets; in each large battery pack assembly accommodating space, at least two battery pack assembly mounting positions arranged along the y direction are formed between two second support beams located in the same xy plane; that is, the utility model can set multiple layers of battery pack assembly units stacked along the z direction in each large battery pack assembly accommodating space, and each layer of battery pack assembly units can include at least two battery pack assemblies arranged along the y direction; under the premise of having the same number of battery pack assemblies, compared with energy storage devices including one or two battery pack assemblies in each layer, the height of the entire energy storage device is reduced, so that its storage, transportation and use are not easily restricted by the height of the space environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the mounting bracket of Example 1;

[0028] Figure 2 This is a schematic diagram of the structure of the side mounting bracket of Example 1;

[0029] Figure 3 This is a schematic diagram of the structure of the intermediate mounting bracket of Example 1;

[0030] Figure 4 A schematic diagram of the local structure of the energy storage device in Example 2 Figure 1 ;

[0031] Figure 5 A schematic diagram of the local structure of the energy storage device in Example 2 Figure 2 ;

[0032] Figure 6This is a schematic diagram of the connection between the first electrical connection plate and the battery pack assembly in the energy storage device of Example 2;

[0033] Figure 7 This is a schematic diagram of the structure of the battery pack assembly of Example 2;

[0034] Figure 8 This is a schematic structural diagram of the battery pack assembly of Example 2 from another perspective;

[0035] Fig. 9 This is a schematic diagram of the structure of the battery module of Example 2;

[0036] Fig.10 This is a schematic diagram of the partial structure of the battery module of Example 2;

[0037] Fig.11 This is a schematic structural diagram of a battery module with an insulating sealant layer according to Example 2;

[0038] Fig.12 This is a schematic structural diagram of a battery module with an insulating protective cover according to Example 2;

[0039] Fig.13 This is a schematic diagram of the structure of the battery pack support frame of Example 2;

[0040] The accompanying drawings in the figure are marked as follows:

[0041] 1. Side mounting bracket; 2. Middle mounting bracket; 3. First support beam; 4. Second support beam; 5. Support rib plate; 6. Battery pack assembly; 61. Battery pack support frame; 62. Battery module; 621. Shell; 622. Single cell; 6221. Polarity terminal; 623. Shell bottom plate; 624. Shell top plate; 625. Electrolyte shared chamber; 626. Gas shared chamber; 7. First electrical connection plate; 8. Second electrical connection plate; 9. Insulating plate; 10. Liquid inlet manifold; 11. Liquid return manifold; 12. Liquid cooling pipe; 13. Insulating sealant layer; 14. Electrical connector; 15. Insulating protective cover; 151. Slit; 16. Explosion venting pipe assembly; 17. Explosion venting manifold; 18. First side beam; 19. Second side beam; 20. Roller. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary persons in the field without creative work should fall within the scope of protection of the utility model.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "top, bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first, second, third, fourth, etc." are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] Example 1

[0046] like Figure 1 As shown, it is a schematic diagram of the structure of the support frame of this embodiment, which is mainly composed of three parallel mounted brackets. For the convenience of description, the three mounted brackets can be defined as a side mounted bracket 1 and a middle mounted bracket 2 according to their relative positions. The structures of the two side mounted brackets 1 are the same.

[0047] Figure 2 and Figure 3 They are schematic diagrams of the structures of the side mounting bracket 1 and the middle mounting bracket 2 of this embodiment, combined with Figure 1 It can be seen that the two side mounting brackets 1 of this embodiment include three first support beams 3 and eight second support beams 4; each first support beam 3 extends along the z direction, and the three first support beams 3 are arranged at equal intervals along the y direction; each second support beam 4 extends along the y direction, and the eight second support beams 4 are arranged at equal intervals along the z direction and fixed on the first support beam 3. The middle mounting bracket 2 of this embodiment includes three first support beams 3 and sixteen second support beams 4; each first support beam 3 extends along the z direction, and the three first support beams 3 are arranged at equal intervals along the y direction; each second support beam 4 extends along the y direction, and the sixteen second support beams 4 are evenly divided into two groups, and each group of eight second support beams 4 are arranged at equal intervals along the z direction and fixed on the opposite side walls of the first support beam 3. The two mounting brackets are located between the two second support beams 4 in the same xy plane to form two battery pack assembly 6 mounting positions arranged along the y direction.

[0048] The length of the first support beam 3 (i.e. Figure 1 , the size of the first support beam 3 along the z direction) is related to the height of each battery pack assembly 6 (i.e., in the figure, the size of each battery pack assembly 6 along the z direction) and the number of stacked layers; the length of the second support beam 4 (i.e., in the figure, the size of each battery pack assembly 6 along the z direction) is related to the height of each battery pack assembly 6 and the number of stacked layers; Figure 1 In the figure, the dimension of the second support beam 4 along the y direction) is equal to the width of each battery pack assembly 6 (i.e. Figure 1 In the figure, the size of each battery pack assembly 6 along the y direction) and the number of battery pack assemblies 6 in each layer (i.e., the installation positions of the battery pack assemblies 6) are related.

[0049] The number of first support beams 3 is related to the number of battery pack assemblies 6 placed in each layer between the two mounting brackets. In each layer, two adjacent first support beams 3 correspond to one battery pack assembly 6; the number of second support beams 4 is equal to the number of stacked layers of battery pack assemblies 6. In other embodiments, the number of first support beams 3 and the number of second support beams 4 can be adjusted according to actual needs. For example, the number of battery pack assemblies 6 placed in each layer can be increased by increasing the number of first support beams 3 and increasing the length of second support beams 4 at the same time, and the number of stacked layers of battery pack assemblies 6 can be increased by increasing the number of second support beams 4 and increasing the length of first support beams 3 at the same time.

[0050] from Figure 2 and Figure 3 It can be seen that in this embodiment, the first support beam 3 is a square steel, the second support beam 4 is an angle steel, the vertical plate of the angle steel is fixed on the first support beam 3, and the transverse plate of the angle steel is used to support the battery pack assembly 6. The vertical plate of the angle steel can be fixed to the square steel by welding. In addition, in order to improve the bonding strength between the two, the support rib plate 5 can also be fixed between the transverse plate of the angle steel and the first support beam 3 in this embodiment.

[0051] Example 2

[0052] This embodiment is an energy storage device using the support frame in Embodiment 1, and the specific structure is as follows Figure 4 As shown ( Figure 4 Only part of the battery pack assembly 6) is shown schematically.

[0053] In this embodiment, two battery pack assemblies 6 are fixed on two second support beams 4 where the mounting brackets are located in the same xy plane. The two battery pack assemblies 6 are arranged along the y direction. Figure 5 As shown, Figure 5 A battery pack assembly 6 is schematically shown on two second support beams 4 where the mounting brackets are located in the same xy plane.

[0054] According to the arrangement of this embodiment, 4 battery pack assemblies 6 can be arranged on each layer, and a total of 8 layers can be arranged. Therefore, the energy storage device of this embodiment can include a total of 32 battery pack assemblies 6. Compared with the energy storage device with the same number of battery pack assemblies 6 arranged on each layer, the height of the entire energy storage device is reduced, so that its storage and transportation are not easily restricted by the environmental height.

[0055] Combination Figure 6In this embodiment, the first electrical connection plate 7 is used to electrically connect the battery pack assemblies 6 located on both sides of the middle mounting bracket 2.

[0056] like Figure 7 and Figure 8 As shown, the battery pack assembly 6 of this embodiment includes a battery pack support frame 61 and a plurality of battery modules 62 fixed on the battery pack support frame 61; adjacent battery modules 62 are connected in series via electrical connectors 14 (wherein the electrical connector 14 can be seen in FIG. Fig.11 ); The first electrical connection plate 7 is connected in series between the battery modules 62 located on both sides of the middle mounting bracket 2 in two adjacent battery pack assemblies 6.

[0057] Because the first electrical connection plate 7 needs to avoid the two adjacent second support beams 4, the present embodiment uses a Z-shaped second electrical connection plate 8 to connect the battery pack components 6 located on both sides of the middle mounting bracket 2 to the first electrical connection plate 7, wherein one end of the second electrical connection plate 8 is fixedly connected to the polarity terminal 6221 of the battery module 62 close to the middle mounting bracket 2, and the other end is fixedly connected to the first electrical connection plate 7. At the same time, an insulating plate 9 (such as a slatted plate 9) can be added between the connection portion between the second electrical connection plate 8 and the first electrical connection plate 7 and the battery pack support frame 61. Figure 6 As shown), ensure that the battery pack support frame 61 and the support frame are not charged, thereby improving the safety of the entire energy storage device.

[0058] from Figure 7 and Figure 8 It can be seen that in this embodiment, 13 battery modules 62 are fixed on the battery pack support frame 61 (only the two outermost battery modules 62 are schematically shown in the figure). In other embodiments, the number of battery modules 62 can be adjusted according to specific needs.

[0059] The battery module 62 of this embodiment can adopt any structure of the battery module 62 (also referred to as a battery pack) disclosed in the prior art, or can adopt Fig. 9 and Fig.10 The battery module 62 shown includes a housing 621 and single batteries 622 arranged in the housing 621 .

[0060] The single battery 622 in this embodiment is a square shell battery, and the number is 13. In other embodiments, the number can be adjusted according to actual needs. The inner cavity of each single battery 622 includes an electrolyte area and a gas area.

[0061] An electrolyte sharing chamber 625 is provided between the housing bottom plate 623 and each single cell 622 along the arrangement direction of the single cells. The inner cavity of the electrolyte sharing chamber 625 is connected to the inner cavity electrolyte area of ​​each single cell 622 .

[0062] A gas sharing chamber 626 is provided between the outer shell top plate 624 and each single cell 622 along the arrangement direction of the single cells, and the inner cavity of the gas sharing chamber 626 is connected to the inner cavity gas area of ​​each single cell 622 .

[0063] In some other embodiments, only an electrolyte sharing chamber 625 or a gas sharing chamber 626 may be provided, or a gas-liquid sharing chamber may be provided on the side wall of the cylinder along the arrangement direction of the single cells, and the inner cavity of the gas-liquid sharing chamber is connected to the electrolyte area and gas area of ​​the inner cavity of each single cell 622.

[0064] In this embodiment, the top plate 624 of the battery module 62 shell is provided with avoidance holes that allow the polarity terminals 6221 of each single battery 622 to extend out; the polarity terminals 6221 of each single battery 622 extend out of the corresponding avoidance holes and the shell 621 area around the avoidance holes is fixedly sealed with the shell of the single battery 622.

[0065] like Fig. 9 As shown, in this embodiment, a through groove is provided at the position where the polarity terminal 6221 of the single battery 622 extends out of the avoidance hole, which serves as a clamping portion for the liquid cooling tube 12; the liquid cooling tube 12 is fixed in the through groove. Figure 8 In this embodiment, the battery pack assembly 6 further includes a liquid inlet manifold 10 and a liquid return manifold 11. In the same battery pack assembly 6, the liquid inlet ends of the liquid cooling tubes 12 in each battery module 62 are connected to the liquid inlet manifold 10, and the liquid outlet ends of the liquid cooling tubes 12 are connected to the liquid return manifold 11; when the temperature of the battery module 62 is higher than the set threshold, a heat transfer medium with a lower temperature is introduced into the liquid cooling tube 12 through the liquid inlet manifold 10 to cool the battery module 62; when the temperature of the battery module 62 is lower than the set threshold, a heat transfer medium with a higher temperature is introduced into the liquid cooling tube 12 through the liquid inlet manifold 10 to heat the battery module 62; by controlling the temperature of the heat transfer medium, it can be ensured that the battery module 62 always operates at a normal operating temperature.

[0066] In addition, in order to prevent the condensation generated by the liquid cooling pipe 12 from causing safety problems, such as Fig.11 As shown, in this embodiment, an insulating sealant layer 13 can also be laid on the top plate 624 of the outer shell, and a partial area of ​​the polarity terminal 6221 of each single battery 622 is covered by the insulating sealant layer 13, and the electrical connection part (i.e., the upper end surface) of the polarity terminal 6221 of each single battery 622 extends out of the insulating sealant layer 13 and is connected to the electrical connector 14; the main part of the liquid cooling tube 12 is covered by the insulating sealant layer 13, and the liquid inlet and liquid outlet ends of the liquid cooling tube 12 extend out of the insulating sealant layer 13, which is used to be connected to the liquid inlet manifold 10 and the liquid return manifold 11.

[0067] Furthermore, since the polarity terminal 6221 is directly exposed to the external environment, there is a great safety hazard during use due to the polarity terminal 6221 being charged. Fig.12 As shown, in this embodiment, an insulating protective cover 15 is provided on the top of the battery module 62, thereby providing insulation protection for the polarity terminal 6221, avoiding the potential safety hazard of the polarity terminal 6221 being exposed during the operation of the battery module 62, and also avoiding the problem of some foreign matter from the external environment falling into the position of the polarity terminal 6221 and causing the battery module 62 to short-circuit, thereby improving the safety of the battery module 62.

[0068] It should be noted that if the insulating protective cover 15 completely wraps the polarity terminal 6221, it will make the electrical connection of such battery module 62 more difficult. Therefore, in this embodiment, a slit 151 is opened on the side wall of the insulating protective cover 15 parallel to the xz plane, and the electrical connector 14 can be connected to the polarity terminal 6221 through the slit 151, thereby achieving electrical connection.

[0069] It should also be noted that a channel for the liquid inlet and outlet ends of the liquid cooling tube 12 to extend out needs to be provided on the side wall of the insulating protective cover 15 .

[0070] In order to lead the thermal runaway smoke out of the shell 621, a venting pipe assembly 16 communicating with the inner cavity of the shell 621 is provided on the shell 621; usually, the venting pipe assembly 16 is directly connected to the above-mentioned shared chamber, such as Fig. 9 and Fig.11 shown.

[0071] In order to prevent the thermal runaway smoke from spreading to the entire container after the thermal runaway of individual battery modules 62 occurs, causing safety problems, such as Figure 7 As shown, the utility model considers converging the explosion-proof pipe assemblies 16 of all battery modules 62 in the battery pack assembly 6 by using the explosion-proof manifold 17. When a single battery 622 in any battery module 62 in the battery pack undergoes thermal runaway, its thermal runaway smoke can be discharged through the explosion-proof manifold 17, thereby reducing the risk of thermal runaway spreading, battery module 62, and even battery pack and energy storage container bursting.

[0072] In this embodiment, the structure of the battery pack support frame 61 is as follows: Fig.13As shown, it is a rectangular frame. For the convenience of description, one pair of two opposite side beams is defined as the first side beam 18, and the other pair of two opposite side beams is defined as the second side beam 19. In order to improve the structural strength of the entire battery pack support frame 61, the first side beam 18 of this embodiment is made of I-shaped steel. The second side beam 19 is made of square steel. The liquid inlet manifold 10 and the liquid return manifold 11 are embedded in the outer space between the upper and lower flanges of the I-shaped steel; the explosion venting manifold 17 is embedded in the inner space between the upper and lower flanges of the I-shaped steel. The explosion venting manifold 17, the liquid inlet manifold 10 and the liquid return manifold 11 are directly embedded in the space between the upper and lower flanges of the first side beam 18 without occupying additional space, so that the battery pack assembly 6 has a higher energy density.

[0073] In addition, in order to facilitate the assembly of the battery pack assembly 6 and the support frame, the present embodiment further provides a roller 20 at the bottom of the second side beam 19. The battery pack assembly 6 can be transported to the battery pack assembly 6 installation position by sliding installation, and positioned by a limiting device provided on the installation bracket.

Claims

1. A support frame for energy storage equipment, the energy storage equipment comprising a plurality of battery pack assemblies; characterized in that: The support frame for energy storage equipment includes three mounting brackets parallel to each other; Each mounting bracket includes a plurality of first support beams and a plurality of second support beams; Each first support beam extends along the z direction, and a plurality of first support beams are arranged along the y direction; Each second support beam extends along the y direction, and a plurality of second support beams are arranged along the z direction and fixed on the first support beam; The mounting brackets are located between two second support beams in the same xy plane to form at least two battery pack assembly mounting positions arranged along the y direction.

2. The support frame for energy storage equipment according to claim 1, characterized in that: The first support beam is square steel, the second support beam is angle steel, the vertical plate of the angle steel is fixed on the first support beam, and the transverse plate of the angle steel is used to support the battery pack assembly.

3. An energy storage device, characterized in that: It comprises the support frame for energy storage equipment according to claim 1 or 2 and a plurality of battery pack assemblies, wherein at least two battery pack assemblies arranged along the y direction are fixed between two second support beams of the mounting brackets located in the same xy plane; The battery pack assemblies located on both sides of the middle mounting bracket are electrically connected through a first electrical connection plate.

4. The energy storage device according to claim 3, characterized in that: The battery pack assembly includes a battery pack support frame and a plurality of battery modules connected in series and fixed on the battery pack support frame; the first electrical connection plate is connected in series between adjacent battery modules in the battery pack assembly located on both sides of the middle mounting bracket.

5. The energy storage device according to claim 4, characterized in that: The battery pack assembly also includes a second electrical connection plate; one end of the second electrical connection plate is fixedly connected to the polarity terminal of the battery module near the middle mounting bracket, and the other end is fixedly connected to the first electrical connection plate.

6. The energy storage device according to claim 5, characterized in that: It also includes an insulating plate arranged between the connection position between the second electrical connection plate and the first electrical connection plate and the battery pack support frame.

7. The energy storage device according to claim 4, characterized in that: The battery pack support frame is a rectangular frame. Rollers are provided at the bottom of the battery pack support frame relative to the two second side beams. The battery pack assembly can be transported to the battery pack assembly installation position by sliding installation and positioned by a limit device arranged on the installation bracket.

8. The energy storage device according to claim 7, characterized in that: The battery pack assembly also includes an explosion venting manifold; the explosion venting manifold is connected to the explosion venting pipe assembly of each battery module in the battery pack assembly; The first side beam of the battery pack support frame is an I-shaped steel, and the explosion-proof manifold is embedded between the upper and lower flanges of the I-shaped steel.

9. The energy storage device according to claim 8, characterized in that: The battery pack assembly also includes a heat transfer tube assembly; The heat transfer tube assembly includes a liquid inlet manifold, a liquid return manifold and a plurality of liquid cooling tubes; A liquid cooling tube clamping part is provided on the polarity terminal of each battery module; a plurality of liquid cooling tubes are fixed on the liquid cooling tube clamping part of each battery module in a one-to-one correspondence, and the liquid cooling tubes are insulated from each battery module; the liquid inlet end of each liquid cooling tube is connected to the liquid inlet manifold, and the liquid outlet end of each liquid cooling tube is connected to the liquid return manifold; The liquid inlet manifold and the liquid return manifold are embedded in the outer space between the upper and lower flanges of the I-shaped steel; The explosion-relief manifold is embedded in the inner space between the upper and lower flanges of the I-shaped steel.

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