Energy storage battery box and energy storage battery

Abstract

The invention discloses an energy storage battery box and an energy storage battery. The energy storage battery box comprises a box body bottom plate, the box body bottom plate comprises a liquid cooling plate and box body bottom beams located at the outer bottom of the liquid cooling plate, and the box body bottom beams comprise bottom cross beams arranged in a spaced mode, transverse reinforcing beams parallel to the bottom cross beams and arranged in a spaced mode, middle reinforcing beams arranged in the longitudinal direction, left side beams arranged in the longitudinal direction and right side beams arranged in the longitudinal direction. The bottom cross beams and the transverse reinforcing beams are arranged below the middle reinforcing beams, the left side beams and the right side beams and are fixed with the middle reinforcing beams, the middle longitudinal beams, the left side beams and the right side beams; and a plurality of module cross beams which are arranged at intervals are fixed on the upper surface of the liquid cooling plate. The energy storage battery box body has the advantages of high integration, high structural strength, high sealing performance, iteration of internal components, platformization, low cost and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage battery boxes, and in particular to an energy storage battery box and an energy storage battery. Background Art

[0002] Lithium-ion batteries are increasingly being used. In the field of electric energy storage batteries, lithium-ion batteries have been proven to be the most ideal energy storage unit for energy storage systems due to their high energy density and low weight. In order to meet market demand, energy storage battery packs must meet product safety and reliability requirements. At the same time, the product must meet the internal electrical safety of the battery pack to ensure the service life of the battery pack, while minimizing product costs to ensure that the product meets cost requirements.

[0003] According to industry standards and specifications, the energy storage battery system should meet the vibration test requirements. The test object should be installed on a vibration table, and random and fixed-frequency vibration loads should be applied in each direction. During the test, the energy storage battery pack or system should not leak, smoke, catch fire, or explode. After the test, the insulation resistance value of the energy storage battery module is not less than 1000Ω / V. During the test of the energy storage battery pack system, the connection is reliable, the structure is intact, there is no loose installation, and the measurement accuracy of the state parameters after the test meets the relevant requirements.

[0004] Therefore, in the structural design of the energy storage battery pack, the energy storage battery pack box, as the carrier of the entire power system, is generally considered to need to achieve the following functions: 1. Meet the protection level function. It involves IP level, dust and water resistance, to prevent dust and water from affecting the insulation performance of the battery cells, electrical components, control system circuit boards, etc. inside the battery pack, and corroding metal devices; 2. Structural protection function. By forming a closed and controllable space, the internal components are prevented from being squeezed by external forces, the battery cells are protected from physical damage and deformation, and internal short circuits do not occur in limited impact and vibration environments, achieving "mechanical integrity of lithium-ion batteries", which refers to the property of maintaining the normal electrochemical function of the battery under mechanical overload conditions. The mechanical integrity of lithium-ion batteries is the most important requirement for the structural protection function of the battery pack box. 3. Thermal protection function. In a limited space, reduce or even isolate the impact of the external environment temperature on the battery cells and electrical performance inside the battery box, maintain a reasonable working temperature, maximize battery performance, and extend battery life. 4. Convenience of maintenance. When the energy storage module fails and needs repair or maintenance, the battery box has good repairability and maintainability, ensuring that the battery system works in a normal and healthy state.

[0005] However, the connection and fixation of the box frame and the bottom plate of the energy storage battery system are mostly welded, which has certain limitations for the fixation and connection of the various components of the box. In particular, the connection and fixation of box components made of different materials are only connected by different forms of welding, which cannot meet the box's requirements for strength, process simplicity and sealing. For example, for liquid-cooled integrated boxes, stir friction welding is currently mostly used, but for boxes of different materials, the installation of liquid cooling plates mostly adopts split installation and connection, which has complex assembly processes and high costs. At the same time, the liquid cooling plate occupies the internal space of the system, which is not conducive to system integration.

[0006] Therefore, from the perspective of the integrated design of the overall energy storage battery box, there is an urgent need for an energy storage battery box with high integration, which can meet the performance of different materials, is low in cost, and is easy to install and maintain. Summary of the invention

[0007] The purpose of the present invention is to overcome the shortcomings and defects of the prior art and to provide an energy storage battery box and an energy storage battery. The energy storage battery box has multiple advantages such as high integration, high structural strength, high sealing, iterative internal components, platformization, and low cost.

[0008] According to a first aspect of the present invention, there is provided an energy storage battery box, comprising a box bottom plate, wherein the box bottom plate comprises a liquid cooling plate and a box bottom beam located at the outer bottom of the liquid cooling plate, wherein the box bottom beam comprises a bottom cross beam arranged separately, a transverse reinforcing beam arranged separately and parallel to the bottom cross beam, a longitudinally arranged middle reinforcing beam, and a longitudinally arranged left beam and right beam, wherein the bottom cross beam and the transverse reinforcing beam are located below the middle reinforcing beam, the left beam and the right beam and are fixed to the middle reinforcing beam, the middle longitudinal beam, the left beam and the right beam, and a plurality of spaced module cross beams are fixed to the upper surface of the liquid cooling plate.

[0009] The bottom cross beam comprises a middle bottom cross beam arranged in the middle position and end bottom cross beams arranged near both ends. The bottom cross beam, transverse reinforcement beam, left beam, right beam and middle reinforcement beam are welded and connected.

[0010] Among them, the liquid cooling plate is connected to the left beam, the right beam and the end bottom cross beam by using multiple first rivet nuts, and the first rivet nuts are evenly spaced and arranged in a circle along the circumferential direction of the liquid cooling plate on the surface of the liquid cooling plate, and the liquid cooling plate and the bottom cross beam, the middle longitudinal beam and the transverse reinforcement beam are reinforced by structural adhesive.

[0011] The module beams include two middle module beams arranged in the middle and adjacent to each other and an end module beam arranged near both ends. A limiting placement area for the cell module is between a middle module beam and an end module beam.

[0012] Among them, the middle module crossbeam is connected to the liquid cooling plate, the middle bottom crossbeam and the middle reinforcement beam through multiple second rivet nuts, an elastic buffer block is arranged between the second rivet nut and the outer bottom surface of the liquid cooling plate, and the second rivet nut passes through the elastic buffer block.

[0013] There are multiple transverse reinforcing beams, which are arranged in the two battery cell module limiting placement areas, and a battery management unit support beam is fixed at one end of the liquid cooling plate near where the cooling medium enters and exits.

[0014] The module beams include two middle module beams arranged in the middle and adjacent to each other and an end module beam arranged near both ends. A limiting placement area for the cell module is between a middle module beam and an end module beam.

[0015] A plurality of rollers are arranged at the bottom of the left beam and the right beam, and the plurality of rollers are arranged spaced apart along the length direction of the left beam / the right beam, and the axial direction of the rollers is perpendicular to the length direction of the left beam / the right beam.

[0016] Among them, the outer sides of the left beam and the right beam are arranged with hoisting holes for hoisting the energy storage battery box, and the hoisting holes are oblong holes.

[0017] Among them, the liquid cooling plate includes an upper flat plate structured temperature equalizing plate and a lower flow channel plate with a stamped flow channel. The temperature equalizing plate is used to support the battery cell module above, and the temperature equalizing plate and the flow channel plate are sealed and welded together; the liquid cooling plate is made of aluminum, and the bottom beam of the box is made of steel.

[0018] A second aspect of the present invention provides an energy storage battery, comprising the energy storage battery box.

[0019] The energy storage battery box of the present invention has a box bottom plate integrated with a liquid cooling plate and is reinforced with a box bottom beam, so that the highly integrated battery box has multiple advantages such as high integration, high structural strength, high sealing, iterative internal components, platformization, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view schematic diagram of the box body bottom plate of the energy storage battery box of the present invention.

[0021] Figure 2 It is a front view schematic diagram of the box bottom plate of the energy storage battery box of the present invention.

[0022] Figure 3 It is a bottom view schematically showing the box body bottom plate of the energy storage battery box of the present invention.

[0023] Figure 4 yes Figure 1 A partial schematic diagram of the end position near the joint shown in the figure.

[0024] Figure 5 yes Figure 1 Another partial schematic diagram of the end position near the joint shown in the figure.

[0025] Figure 6 It is a schematic diagram of the flow channel plate of the box bottom plate of the energy storage battery box of the present invention.

[0026] Figure 7 It is an axonometric schematic diagram of the energy storage battery box of the present invention with the bottom crossbeam facing upward.

[0027] Figure 8 yes Figure 7 A partial schematic diagram of the middle part of the figure shown in .

[0028] Fig. 9 yes Figure 8 The figure shown in FIG does not include a schematic diagram of the middle bottom beam. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] like Figures 1 to 9 As shown, a storage battery box includes a box bottom plate 1, the box bottom plate includes a liquid cooling plate and a box bottom beam located at the outer bottom of the liquid cooling plate, the box bottom beam includes a bottom cross beam arranged separately, a transverse reinforcing beam 9 arranged parallel to the bottom cross beam, a longitudinally arranged middle reinforcing beam 6, a longitudinally arranged left beam 7 and a right beam 8, the bottom cross beam and the transverse reinforcing beam are below the middle reinforcing beam, the left beam and the right beam and are fixed to the middle reinforcing beam, the middle longitudinal beam, the left beam and the right beam, and a plurality of spaced module cross beams 3 are fixed to the upper surface of the liquid cooling plate.

[0031] In the embodiment of the present application, the liquid cooling plate is used as the bearing surface of the bottom of the box body. Different from the traditional design of a separate sealing surface of the frame, it has a simple structure, high integration, reduces structural components, and reduces costs.

[0032] In some embodiments, the bottom cross beam includes a middle bottom cross beam 10 arranged in the middle position and an end bottom cross beam 11 arranged near both ends. The bottom cross beam, the transverse reinforcement beam, the left beam, the right beam, and the middle reinforcement beam are welded and connected, such as by resistance welding, and the transverse reinforcement beams have the same structure and modular design, which is convenient for production and reduces mold development costs.

[0033] In some embodiments, the liquid cooling plate is connected to the left beam, the right beam and the end side bottom cross beam by using a plurality of first rivet nuts 4, and the first rivet nuts are evenly spaced and arranged in a circle on the surface of the liquid cooling plate along the circumferential direction of the liquid cooling plate, and the liquid cooling plate is reinforced with the bottom cross beam, the middle longitudinal beam and the transverse reinforcement beam by using structural adhesive. As shown in the figure, structural adhesive is used to reinforce multiple contact connection positions 17 between one end of the middle bottom cross beam and the left beam, and structural adhesive is used to reinforce multiple contact connection positions 17 between the other end of the middle bottom cross beam and the right beam. Similarly, structural adhesive is used to reinforce the corresponding contact positions between the two ends of the end side bottom cross beam and the left beam and the right beam. The bottom cross beam, the transverse reinforcement beam and the bottom middle longitudinal beam of the box body are reinforced with the liquid cooling plate by using structural adhesive to ensure the strength of the box body, such as structural reinforcement is used at multiple contact positions 18 between the transverse reinforcement beam and the middle longitudinal beam, and structural adhesive is also used to reinforce multiple contact positions between the bottom middle cross beam 10 and the end side bottom cross beam 11 and the middle longitudinal beam 6.

[0034] In some embodiments, the module beam 3 includes two middle module beams arranged in the middle position and adjacent to each other and an end module beam arranged near both ends, with a total of four module beams 3. A limit placement area for the battery cell module is provided between an middle module beam and an end module beam. The battery cell module is placed in the limit placement area and fixedly connected to the module beam through fixing parts. A thermal conductive material layer, such as a thermal conductive glue or a thermal conductive pad, is arranged between the battery cell module and the upper surface of the liquid cooling plate.

[0035] In some embodiments, the middle module crossbeam is connected to the liquid cooling plate, the middle bottom crossbeam and the middle reinforcement beam through a plurality of second rivet nuts 5, an elastic buffer block is arranged between the second rivet nut and the outer bottom surface of the liquid cooling plate, and the second rivet nut passes through the elastic buffer block 19, such as a silicone foam block, which can be a square plate structure. By adding an elastic buffer block at the local contact position between the bottom crossbeam of the box and the liquid cooling plate, the buffering and supporting effects are increased. Furthermore, a convex portion 101 pointing to the liquid cooling plate is formed at the position where the middle bottom crossbeam 10 contacts the liquid cooling plate, which is displayed as a groove on the outer bottom, and correspondingly, a groove 22 is formed at the corresponding position of the liquid cooling plate to avoid the convex portion 101. A plurality of holes are prefabricated on the liquid cooling plate, which can facilitate the selection of the bottom crossbeam for use or adjustment of the installation position.

[0036] In some embodiments, the transverse reinforcing beams 9 are multiple and arranged in the two battery module limit placement areas. A battery management unit support beam 21 is fixed at one end near the cooling medium entering and exiting the liquid cooling plate. On the outside of the battery management unit support beam 21, there are a liquid cooling medium inlet 15 and a liquid cooling medium outlet 16. The battery management unit support beam 21 is shared with the bottom end side bottom beam. Through the shared design of the box bottom beam and the battery management unit support beam, the material is universal, and it can be adjusted according to the module package length, reducing costs and having strong adaptability.

[0037] In the present application, the liquid cooling plate and the bottom cross beam of the box are designed to be staggered, and the fixed position of the bottom cross beam of the box is movable, so that a platform design is performed without changing the design of the liquid cooling plate.

[0038] In some embodiments, a plurality of rollers 20 are arranged at the bottom of the left beam and the right beam, and the plurality of rollers are arranged spaced apart along the length direction of the left beam / right beam. The axial direction of the roller is perpendicular to the length direction of the left beam / right beam, that is, the roller shaft 13 is perpendicular to the length direction of the left beam / right beam. The arrangement of the rollers facilitates the relative movement of the box body and its bottom supporting structure, facilitates the installation of the energy storage battery system, and meets the requirements of product assembly.

[0039] In some embodiments, the outer sides of the left beam and the right beam are arranged with hoisting holes 14 for hoisting the energy storage battery box, with at least two on each beam, wherein the hoisting holes are oblong holes, which facilitate module hoisting and installation and meet product assembly requirements.

[0040] In some embodiments, the liquid cooling plate includes an upper temperature averaging plate 1 with a flat plate structure and a lower flow channel plate 12 with a stamped flow channel. The temperature averaging plate 1 is used to support the battery cell module above. The temperature averaging plate 1 and the flow channel plate 12 are sealed and welded together, such as by brazing. The liquid cooling plate is made of aluminum, and the bottom beam of the box is made of steel.

[0041] In some embodiments, the flow channel includes a first flow channel 122 and a second flow channel 121, the first flow channel 121 is a parallel flow channel, the second flow channel 122 is a series flow channel, the first flow channel is connected to the liquid inlet interface, the second flow channel is connected to the liquid outlet interface, and the first flow channel and the second flow channel are connected at the rear end side of the liquid cooling plate; a swirling turbulent structure composed of staggered first ribs 123 and second ribs 124 is arranged in the second flow channel; the swirling turbulent structure is a plurality of groups, which are arranged in the second flow channel 121 at intervals along the flow direction of the cooling medium.

[0042] In some embodiments, there are at least two groups of the first flow channels 122, each of which is independent and arranged in parallel; each group of the first flow channels 122 includes a plurality of ribs arranged along the length of the liquid cooling plate and parallel to each other, and the liquid cooling medium flows along a serpentine trajectory in the flow channels on both sides of the ribs, and finally flows into the second flow channel 121.

[0043] In some embodiments, each group of swirling turbulent structures is composed of a plurality of parallel spaced first ribs 123 and a plurality of parallel spaced second ribs 124, the length directions of the first ribs and the second ribs are parallel to the length direction of the liquid cooling plate, the first ribs are spaced apart and arranged in the downstream direction of the second ribs, the number of the first ribs is greater than the number of the second ribs, and two adjacent spaced first ribs are symmetrically arranged in the axial direction of one of the second ribs.

[0044] Through the design of the flow channel structure, it is possible to ensure the allocation of the coolant flow rate of the flow channel position block of each battery module and the uniform temperature of the overall liquid cooling plate, meet the requirements of the energy storage liquid cooling battery system module for the cooling performance of the liquid cooling plate, and use parallel flow channels to flow through the liquid cooling medium when entering the liquid cooling to cool the battery cells. For example, when four columns of battery cells are arranged (along the width direction of the liquid cooling plate, the first to fourth columns of battery cells are in the direction from the liquid inlet joint to the liquid outlet joint), the first three columns of battery cells are cooled by parallel flow channels, and the last column of battery cells is cooled by series flow channels. Through the simulation module, this design structure can ensure the allocation of the coolant flow rate of the flow channel position block of each battery module and the uniform temperature of the overall liquid cooling plate, meet the requirements of the energy storage liquid cooling battery system module for the cooling performance of the liquid cooling plate, and the overall liquid cooling plate has the technical characteristics of good uniform temperature, low cost, platformization, detachable iteration, and high adaptability.

[0045] In the embodiment of the present invention, the steel material used to make the bottom frame of the box can be made of medium-high strength steel, such as HC420 / 780DP medium-strength steel. The medium-high strength steel and the aluminum liquid cooling plate (such as AL3003 material) are fixed and assembled, and the internal components of the box are connected by flexible integration methods such as combined connections such as gluing and bolting. At the same time, reinforcement parts are used to strengthen important positions of the connection positions to improve the overall rigidity of the battery box.

[0046] In addition, the box can achieve a flat design, using steel instead of aluminum to ensure that the box has multiple technical advantages such as high structural strength, high sealing, iterative internal components, platformization, and low cost.

[0047] The box body of the embodiment of the present invention uses a combination of medium- and high-strength steel and aluminum plates, and an integrated box bottom structure including a liquid cooling plate, a frame, and a crossbeam, according to the mechanical fastening connection and mechanical matching theory of the battery pack. In view of the different structural characteristics inside the bottom of the box, flexible integrated methods such as gluing, bolting, and combined connection are comprehensively selected to connect the internal components of the box body. At the same time, reinforcement members are used to strengthen the important positions of the connection positions to improve the overall rigidity of the battery box body. The liquid cooling plate inside the box body is used as the bearing surface and sealing surface of the bottom of the box body. The liquid cooling plate, the module crossbeam, and the crossbeam at the bottom of the box body are connected by riveting and gluing. In the selection of the low-cost solution for the liquid cooling plate, an integrated brazing box body is also adopted. The connection between the liquid cooling plate and the bottom crossbeam and longitudinal beam adopts a comprehensive connection solution of strengthening support blocks, bolting, and gluing to ensure the overall rigidity of the box body. The technical characteristics that the liquid cooling channel does not occupy the fixed point structure of the box body and the liquid cooling channel can be iteratively updated are also achieved.

[0048] The second aspect of the embodiment of the present invention provides an energy storage battery, including the energy storage battery box. The energy storage battery box is fixed and assembled with medium-high strength steel and aluminum liquid cooling plate, and the internal components of the box are connected by flexible integrated methods such as combined connection such as gluing and bolting. At the same time, reinforcements are used to strengthen the important positions of the connection positions to improve the overall rigidity of the battery box. In particular, the bottom beam frame of the middle box of the present invention is connected to the liquid cooling plate and the crossbeam in the form of rivets + sealant to achieve the connection between steel and aluminum, with high strength, low cost and simple assembly method.

[0049] The energy storage battery of the present invention has a bottom plate of a box body that uses a liquid cooling plate inside the box body as a bearing surface and a sealing surface at the bottom of the box body. The connections between the liquid cooling plate, the module cross beam, and the cross beam at the bottom of the box body also use a riveting + gluing solution to ensure the overall rigidity of the box body. The technical characteristics of the liquid cooling channel not occupying the fixed point structure of the box body and the liquid cooling channel being iteratively updateable are also achieved.

[0050] In addition, the strip body of the energy storage battery of the present invention is a new integrated box structure with a low Z-direction height. Steel material is used instead of an aluminum box, thereby reducing costs while meeting strength requirements.

[0051] The energy storage battery of the embodiment of the present invention uses a box body that is based on the mechanical fastening connection and mechanical matching theory of the battery pack, and is a collection of medium- and high-strength steel and aluminum plates, including an integrated box bottom structure of a liquid cooling plate, a frame, and a crossbeam. In view of the different structural characteristics inside the bottom of the box, flexible integrated methods such as gluing, bolting, and combined connection are comprehensively selected to connect the internal components of the box body. At the same time, reinforcement members are used to strengthen important positions of the connection positions to improve the overall rigidity of the battery box body. The liquid cooling plate inside the box body is used as the bearing surface and sealing surface of the bottom of the box body. The liquid cooling plate, the module crossbeam, and the crossbeam at the bottom of the box body are connected by riveting and gluing. In the selection of the low-cost solution for the liquid cooling plate, an integrated brazing box body is also used. The connection between the liquid cooling plate and the bottom crossbeam and longitudinal beam adopts a comprehensive connection solution of strengthening support blocks, bolting, and gluing to ensure the overall rigidity of the box body. The technical characteristics that the liquid cooling channel does not occupy the fixed point structure of the box body and the liquid cooling channel can be iteratively updated are also achieved.

[0052] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0053] Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that all changes falling within the meaning and range of equivalent elements of the claims are included in the present invention.

[0054] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Energy storage battery box, characterized in that: It includes a box bottom plate, the box bottom plate includes a liquid cooling plate and a box bottom beam located at the outer bottom of the liquid cooling plate, the box bottom beam includes a bottom cross beam arranged separately, a transverse reinforcing beam arranged parallel to the bottom cross beam, a longitudinally arranged middle reinforcing beam, and a longitudinally arranged left beam and right beam, the bottom cross beam and the transverse reinforcing beam are below the middle reinforcing beam, the left beam and the right beam and are fixed to the middle reinforcing beam, the middle longitudinal beam, the left beam and the right beam, and a plurality of spaced module cross beams are fixed to the upper surface of the liquid cooling plate.

2. The energy storage battery box according to claim 1, characterized in that: The bottom cross beam comprises a middle bottom cross beam arranged in the middle position and end side bottom cross beams arranged near both ends. The bottom cross beam, the transverse reinforcement beam, the left beam, the right beam and the middle reinforcement beam are welded and connected.

3. The energy storage battery box according to claim 2, characterized in that: The liquid cooling plate is connected to the left beam, the right beam and the end bottom cross beam by using a plurality of first rivet nuts, the first rivet nuts are evenly spaced and arranged in a circle along the circumferential direction of the liquid cooling plate on the surface of the liquid cooling plate, and the liquid cooling plate is reinforced with the bottom cross beam, the middle longitudinal beam and the transverse reinforcement beam by using structural adhesive.

4. The energy storage battery box according to claim 3, characterized in that: The module crossbeam includes two middle module crossbeams arranged in the middle position and adjacent to each other and an end module crossbeam arranged near both ends. The space between a middle module crossbeam and an end module crossbeam is a limiting placement area for the battery cell module.

5. The energy storage battery box according to claim 4, characterized in that: The middle module crossbeam is connected to the liquid cooling plate, the middle bottom crossbeam and the middle reinforcing beam through a plurality of second rivet nuts, an elastic buffer block is arranged between the second rivet nut and the outer bottom surface of the liquid cooling plate, and the second rivet nut passes through the elastic buffer block.

6. The energy storage battery box according to claim 3, characterized in that: There are multiple transverse reinforcing beams, which are arranged in the two battery cell module limiting placement areas, and a battery management unit support beam is fixed to one end near the cooling medium entering and exiting the liquid cooling plate.

7. The energy storage battery box according to claim 1, characterized in that: A plurality of rollers are arranged at the bottom of the left beam and the right beam, and the plurality of rollers are arranged spaced apart along the length direction of the left beam / the right beam, and the axial direction of the rollers is perpendicular to the length direction of the left beam / the right beam.

8. The energy storage battery box according to claim 1, characterized in that: The outer sides of the left beam and the right beam are arranged with hoisting holes for hoisting the energy storage battery box, and the hoisting holes are oblong holes.

9. The energy storage battery box according to claim 1, characterized in that: The liquid cooling plate includes an upper flat plate structured temperature averaging plate and a lower flow channel plate with a stamped flow channel. The temperature averaging plate is used to support the battery cell module above. The temperature averaging plate and the flow channel plate are sealed and welded together. The liquid cooling plate is made of aluminum, and the bottom beam of the box is made of steel.

10. Energy storage battery, characterized in that: Comprising the energy storage battery box as described in any one of claims 1-9.

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