Energy storage device

Abstract

The utility model discloses an energy storage device. The energy storage device comprises a shell, a battery module, a control module and a cooling module. The battery module is arranged in the shell and comprises at least one battery pack. The control module is arranged on any side or the top of the battery module in the width direction and electrically connected with the battery module through the circuit assembly. The cooling module is communicated with the battery module through the pipeline assembly so as to form a first cooling circulation path for a cooling medium to flow and to be in contact with the battery pack;

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to an energy storage device. Background Art

[0002] In recent years, with the accelerated development of the new energy industry, energy storage devices have been more and more widely promoted and applied. Generally, an energy storage device includes a housing, a cooling module, a battery module disposed in the housing, and a control module for managing the battery module. The battery module is composed of at least one battery pack, and each battery pack contains a plurality of battery cells.

[0003] Due to the characteristics of the battery, safety issues have always been one of the most critical issues for energy storage devices. The issue of how to prevent the battery cells from catching fire and exploding has been continuously concerned and studied. Immersion cooling is an advanced battery cooling technology that can achieve higher cooling efficiency and lower temperature difference of the battery cells by immersing the battery cells in a continuously circulating special insulating cooling medium. However, the existing energy storage devices cannot provide a reasonable layout for this cooling method. Therefore, in combination with the characteristics of immersion cooling, how to reasonably layout the energy storage device and facilitate installation, maintenance has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] This application provides an energy storage device, which can solve the problem of how to reasonably layout and facilitate installation and maintenance of an energy storage device with the characteristics of immersion cooling.

[0005] In a first aspect, the energy storage device provided by this application includes a housing, a battery module, a control module, and a cooling module. The battery module is disposed in the housing and includes at least one battery pack. The control module is disposed on either side or the top of the battery module in the width direction and is electrically connected to the battery module through a circuit assembly. The cooling module is communicated with the battery module through a pipeline assembly to form a first cooling circulation path for the cooling medium to flow and contact the battery pack.

[0006] In some embodiments, the control module is disposed on the top of the battery module, and the cooling module is disposed on either side of the battery module (30) in the width direction.

[0007] In some embodiments, within the range of one side of the battery module, the pipelines in the pipeline assembly are connected to the battery packs on that side along a first direction, and the circuits in the circuit assembly are connected to the battery packs and / or the control module along a second direction, and the first direction is different from the second direction.

[0008] In some embodiments, the battery module includes a plurality of battery packs. The line assembly includes a signal line group and a power line group. The signal line group connects adjacent battery packs along the second direction, and the signal line group also connects the battery packs and the control module. The power line group connects adjacent battery packs along the second direction, and the power line group also connects the battery packs and the control module.

[0009] In some embodiments, the battery module includes a first region and a second region at opposite ends in the first direction. The signal line group and the power line group on the battery module are respectively located in the first region and the second region of the battery module.

[0010] In some embodiments, the battery pack is provided with a first interface and a second interface. The pipeline assembly is in communication with both the first interface and the second interface. The battery module further includes a third region. In the first direction, the third region is located between the first region and the second region; both the first interface and the second interface are located at opposite ends in the first direction of the third region of the battery module.

[0011] In some embodiments, the battery pack includes a housing and an electric core housed in the housing. The housing is provided with a first interface and a second interface that communicate with the inside of the housing. The pipeline assembly includes a first main pipeline, a second main pipeline, a first branch pipeline, and a second branch pipeline. The first main pipeline communicates with the cooling module and extends along the second direction. The second main pipeline communicates with the cooling module and extends along the second direction. The first branch pipeline connects the first main pipeline and the first interface and extends along the first direction. The second main pipeline connects the second branch pipeline and the second interface and extends along the first direction.

[0012] In some embodiments, in the first direction, the first main pipeline and the second main pipeline are located between the cooling module and the battery module.

[0013] In some embodiments, the housing is provided with a first compartment and a second compartment arranged along the first direction. The cooling module is housed in the first compartment. The battery module and the control module are housed in the second compartment. The control module and the battery pack are arranged along the second direction. The control module is located on the outermost side of the battery module in the second direction.

[0014] In some embodiments, the battery module includes a plurality of battery packs. Both the battery pack and the control module are provided with signal line interfaces. The signal line group includes a plurality of signal lines. At least one of the signal lines is electrically connected to the signal line interfaces on two adjacent battery packs along the second direction, so that the plurality of battery packs are connected in series. At least one of the signal lines is electrically connected to the signal line interface on the adjacent battery pack and the signal line interface on the control module along the second direction, so that the battery module is electrically connected to the control module.

[0015] In some embodiments, the battery module includes a plurality of battery packs. The battery pack is provided with a negative electrode interface and a positive electrode interface. The control module is provided with a total positive interface and a total negative interface. The power line group includes a plurality of first power lines and second power lines. At least one of the first power lines is electrically connected to the positive electrode interface and the negative electrode interface on two adjacent battery packs along the second direction, so that the plurality of battery packs are connected in series. The first power line is electrically connected to the positive electrode interface on the adjacent battery pack and the total negative interface on the control module along the second direction. The second power line is electrically connected to the negative electrode interface on the battery pack farthest apart and the total positive interface on the control module along the second direction.

[0016] In some embodiments, the cooling module is also communicated with the control module through a pipeline assembly to form a second cooling circulation path for the cooling medium to flow. The control module includes a box body and a control unit accommodated in the box body. The box body is provided with a first opening and a second opening communicated with the inside of the box body. The pipeline assembly includes a first main pipeline, a second main pipeline, a first branch pipeline and a second branch pipeline. The first main pipeline is communicated with the cooling module and extends along the second direction. The second main pipeline is communicated with the cooling module and extends along the second direction. The first branch pipeline connects the first main pipeline and the first opening and extends along the first direction. The second branch pipeline connects the second main pipeline and the second opening and extends along the first direction.

[0017] In some embodiments, the control module includes a first area, a second area and a third area. The first area and the second area of the control module are respectively located at opposite ends in the first direction. The third area of the control module is located between the first area and the second area of the control module. The signal line group and the power line group on the control module are respectively located in the first area and the second area of the control module.

[0018] In some embodiments, the control module includes a first region, a second region, and a third region. The first region and the second region of the control module are respectively located at opposite ends in the first direction. The third region of the control module is located between the first region and the second region of the control module. The first opening and the second opening are both located at opposite ends in the first direction of the third region of the control module.

[0019] In some embodiments, the housing includes a first hatch and a second hatch. The first hatch covers the first chamber. The second hatch covers the second chamber. The length of the first hatch is less than the length of the second hatch.

[0020] In some embodiments, the housing, the battery module, the circuit assembly, and the pipeline assembly together form a modular energy storage module. The control module is a modular control module. The cooling module is a modular cooling module. The modular cooling module and the modular control module are respectively located on opposite sides in the first direction of the modular energy storage module.

[0021] In some embodiments, the housing is provided with a first chamber for accommodating the battery module. The housing includes a first door. The first door is used to block the first chamber. The modular control module includes a box body and a control unit. The box body is provided with a second chamber for accommodating the control unit. The box body includes a second door. The second door is used to block the second chamber. The modular cooling module includes a cabinet body and a cooling unit. The cabinet body is provided with a third chamber for accommodating the cooling unit. The cabinet body includes a third door. The third door is used to block the third chamber.

[0022] In some embodiments, the battery module includes a plurality of battery packs. Both the battery packs and the modular control module are provided with signal line interfaces. The signal line group includes a plurality of signal lines. At least one of the signal lines is electrically connected to the signal line interfaces on two adjacent battery packs along the second direction to connect the plurality of battery packs in series. One end of at least one of the signal lines is connected to the signal line interface on one battery pack, and the other end passes through the signal line interfaces on the housing and the modular control module to be electrically connected, so that the battery module is electrically connected to the modular control module.

[0023] In some embodiments, the battery module includes a plurality of battery packs. Each battery pack is provided with a negative electrode interface and a positive electrode interface. The modular control module is provided with a total positive interface and a total negative interface; the power line group includes a plurality of first power lines and second power lines. At least one of the first power lines is electrically connected to the positive electrode interface and the negative electrode interface on two adjacent battery packs along the second direction, so that the plurality of battery packs are connected in series. One end of the first power line is connected to the positive electrode interface on one battery pack, and the other end passes through the housing and is electrically connected to the total negative interface on the modular control module. One end of the second power line is electrically connected to the negative electrode interface on the outermost battery pack, extends along the second direction and then passes out of the housing, and the other end of the second power line is electrically connected to the total positive interface on the modular control module.

[0024] In some embodiments, the modular energy storage module includes a plurality of them. The plurality of modular energy storage modules are arranged along the first direction, and the plurality of modular energy storage modules include a first side and a second side facing away from each other in the first direction. The modular cooling module and the modular control module are respectively located on the first side and the second side.

[0025] In some embodiments, the pipeline assembly further includes a first main pipeline and a second main pipeline. The first main pipeline is arranged at the bottom of the housing and is communicated with the first main pipeline, and the first main pipeline extends along the first direction. The second main pipeline is arranged at the bottom of the housing and is communicated with the second main pipeline, and the second main pipeline extends along the first direction. The first main pipeline and the second main pipeline in the modular energy storage module pass through the housing and are respectively communicated with the first main pipeline and the second main pipeline in the adjacent modular energy storage module.

[0026] In the energy storage device of the present application, the battery module is arranged in the housing, the cooling module is arranged on one side of the battery module, the control module is arranged on the other side of the battery module, the cooling module is communicated with the battery pack through the pipeline assembly to form a first cooling circulation path, and the control module is electrically connected to the battery pack through the circuit assembly. On the one hand, the setting of the first cooling circulation path allows the cooling medium to flow into the battery pack, realizing the immersion cooling and heat dissipation of the battery cells in the battery pack, improving the use safety of the battery pack; on the other hand, the overall reasonable layout of the energy storage device is realized.

[0027] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0028] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0029] Figure 1 is a three-dimensional structural schematic diagram of an energy storage device according to some embodiments of the present application;

[0030] Figure 2 is Figure 1 the front view of the energy storage device shown;

[0031] Figure 3 is Figure 1 a three-dimensional schematic diagram of a partial structure of the energy storage device shown;

[0032] Figure 4 is Figure 1 the plan view of a partial structure of the energy storage device shown;

[0033] Figure 5 is Figure 1 a three-dimensional schematic diagram of a partial structure of the energy storage device shown;

[0034] Figure 6 is Figure 1 the three-dimensional structural schematic diagram of the battery pack in the energy storage device shown;

[0035] Figure 7 is a three-dimensional structural schematic diagram of an energy storage device according to other embodiments of the present application;

[0036] Figure 8 is Figure 7 the front view of the energy storage device shown;

[0037] Figure 9 is Figure 7 the schematic diagram of a partial structure of the energy storage device shown;

[0038] Figure 10 is Figure 7 the exploded schematic diagram of a partial structure of the energy storage device shown;

[0039] Figure 11 is Figure 7 the plan view of a partial structure of the energy storage device shown;

[0040] Figure 12 is Figure 7 the plan view of a partial structure of the energy storage device shown;

[0041] Figure 13 is the plan view of an energy storage device according to still other embodiments of the present application;

[0042] Figure 14 is the present application Figure 13Schematic perspective view of a partial structure of the energy storage device shown.

[0043] Description of main component labels:

[0044] Energy storage device 100;

[0045] Modular energy storage module 10A, modular control module 50A, modular cooling module 70A;

[0046] Housing 10, first compartment 11, first chamber 12, second compartment 13, first hatch 15, first door 17, second hatch 19;

[0047] Battery module 30, battery pack 31, outer shell 311, first interface 3111, second interface 3113, signal line interface 3115, negative electrode interface 3117, positive electrode interface 3119, battery cell 313, first area 33, second area 35, third area 37;

[0048] Control module 50, box body 51, signal line interface 511, total positive interface 512, total negative interface 513, first opening 514, second opening 515, second chamber 517, second door 519, control unit 53, first area 53, second area 55, third area 57;

[0049] Line assembly 60, signal line group 61, signal line 611, power line group 63, first power line 631, second power line 633;

[0050] Cooling module 70, cabinet 71, third chamber 711, third door 713, cooling unit 73;

[0051] Pipeline assembly 80, first main pipeline 81, second main pipeline 83, first branch pipeline 85, second branch pipeline 87, first main pipeline 88, second main pipeline 89;

[0052] Pipe assembly 90, first main pipe 91, second main pipe 93, first branch pipe 95, second branch pipe 97. Detailed implementation manners

[0053] In the description of the present application, some of the disclosed content has been correspondingly shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The content described below by referring to the drawings is exemplary and is only used to explain the present application and should not be construed as a limitation to the present application.

[0054] In the description of the present application, many different contents or examples are disclosed to implement different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0056] In the description of this application, it should be understood that terms indicating orientation or positional relationship (such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc.) are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and facilitating the understanding of the corresponding embodiments, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, terms indicating orientation or positional relationship should not be construed as a limitation to this application.

[0057] In the description of this application, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] Please refer to Figures 1 to 5, In a first aspect, the present application provides an energy storage device 100, which includes a housing 10, a battery module 30, a control module 50, and a cooling module 70. The battery module 30 is disposed within the housing 10 and includes at least one battery pack 31. The control module 50 is disposed on either side or the top of the battery module 30 in the width direction and is electrically connected to the battery module 30 through a circuit assembly 60. The cooling module 70 is in communication with the battery module 30 through a pipeline assembly 80 to form a first cooling circulation path for the cooling medium to flow and contact the battery pack.

[0060] Specifically, a rectangular coordinate system is established with the length, width, and height of the energy storage device 100 as the three axes. In the embodiments of the present application, the length direction of the energy storage device 100 is the length direction X, the width direction of the energy storage device 100 is the width direction Y, and the height direction of the energy storage device 100 is the height direction Z.

[0061] Specifically, the housing 10 is a cabinet structure for loading and supporting the battery pack 31. The cross-section (the plane intercepted by the XY plane) or the longitudinal section (the plane intercepted by the XZ plane) of the housing 10 can be but is not limited to being circular, elliptical, square, or other polygons. The material of the housing 10 includes but is not limited to metals or non-metals. Among them, metals include aluminum, iron, steel, aluminum alloy, or ferroalloy, etc., and non-metals include but are not limited to plastics, etc. In the present application, both the cross-section and the longitudinal section of the housing 10 are square. The material of the housing 10 is aluminum alloy, so that the energy storage device 100 can be made lighter and more convenient for transportation while ensuring stiffness.

[0062] Specifically, one side of the housing 10 is provided with a hatch, and the other sides are closed. The hatch is used for loading the components in the energy storage device 100 into the chamber. The installation of the hatch can be a detachable installation or a non-detachable installation. The detachable installation includes but is not limited to screw connection, snap connection, or a combination of screw connection and snap connection. The non-detachable installation includes but is not limited to glue connection, welding, or a combination of glue connection and welding. In the present application, the hatch is a detachable installation.

[0063] In addition, in the case where the housing 10 is provided with a hatch, the housing 10 may not be limited to being made of one material. For example, the body of the housing 10 (the component for installing the hatch) and the hatch are made of the same material, both being aluminum alloy. The housing 10 can also be made of different materials for different components. For example, the body of the housing 10 is made of a metal material, while the hatch is made of plastic. Of course, the materials of the body of the housing 10 and the hatch can also be other combinations of different materials, which will not be listed one by one here.

[0064] Please refer to Figure 5 and Figure 6, the battery module 30 includes various forms such as battery cells, battery modules or battery packs 31. In this application, the battery module is described as an aggregate composed of multiple battery packs 31. This aggregate can store and release energy by connecting and controlling the battery cells 313 in the battery packs 31. The functions of the battery module 30 include but are not limited to energy storage, energy dispatching, and energy storage power stations. Specifically, in some applications, the battery module 30 can convert electrical energy into chemical energy for storage to meet the electricity demand during peak energy demand periods, thus playing the role of energy storage. In other applications, the battery module 30 can flexibly adjust the supply and demand of electrical energy to achieve energy balance and dispatching, improve energy utilization efficiency, and thus play the role of energy dispatching. In still other applications, the battery module 30 can form an energy storage power station to store and dispatch energy on a large scale and provide a reliable energy supply, thus playing the role of an energy storage power station. In the energy storage device 100, the number of battery modules 30 can be any number, for example, the battery module 30 can be one, two, three, four or more. The number of battery packs 31 in the battery module 30 can be any number, for example, the battery pack 31 can be one, two, three, four or more. In this application, the energy storage device 100 includes one and three battery modules 30, and each battery module 30 includes 9 battery packs 31 as an example for illustration.

[0065] The battery pack 31 is an aggregate composed of multiple energy-storing battery cells 313. The battery cell 313 is the smallest unit for storing and releasing electrical energy. The battery pack 31 includes a housing 311 and the battery cells 313 accommodated in the housing 311. The housing 311 of the battery pack 31 is made of insulating material, and the interior of the battery pack 31 is filled with insulating and non-flammable liquid, effectively preventing thermal runaway, fire or explosion of the battery cells 313. This aggregate composed of battery cells 313 can store and release energy by connecting and controlling the battery cells 313. In the battery pack 31, there are multiple battery cells 313, and the multiple battery cells 313 can be connected in series, in parallel or in a combination of series and parallel. A combination of series and parallel means that there are both series and parallel connections among the multiple battery cells 313. The multiple battery cells 313 can be directly connected in series, in parallel or in a combination of series and parallel together, and then the whole formed by the multiple battery cells 313 is accommodated in the housing 311 of the battery pack 31. The battery pack 31 can also include other structures. For example, the battery pack 31 can also include a busbar component (not shown in the figure) for realizing the electrical connection among the multiple battery cells 313. It can be understood that the number of battery cells 313 in the battery pack 31 can be adaptively adjusted according to the application scenario and capacity of the battery module 30.

[0066] The control module 50 is electrically connected to the battery module 30 through the line component 60 and is a device used to control the power cycle and signal acquisition of the battery module 30. Controlling the power cycle of the battery module 30 includes controlling the charging and discharging of the battery cells 313 in the battery pack 31.

[0067] Furthermore, the control module 50 is disposed on one side of the battery module 30, and the cooling module 70 is disposed on the other side, including: the control module 50 is disposed at the top of the battery module 30 in the height direction Z, and the cooling module 70 is disposed on any side of the battery module 30 along the length direction X; or, the control module 50 is disposed at the bottom of the battery module 30 along the height direction Z, and the cooling module 70 is disposed on any side of the battery module 30 along the length direction X; or, along the length direction X, the control module 50 is disposed on one side of the battery module 30, and the cooling module 70 is disposed on the other side of the battery module 30 in the length direction X; or, along the width direction Y, the control module 50 is disposed on one side of the battery module 30, and the cooling module 70 is disposed on the other side of the battery module 30 in the width direction Y; or, along the height direction Z, the control module 50 is disposed on one side of the battery module 30, and the cooling module 70 is disposed on the other side of the battery module 30 in the height direction Z, and so on. Other forms are not listed one by one here.

[0068] The cooling module 70 is a component that uses a cooling medium to cool the internal components (such as the battery pack 31) of the energy storage device 100. The cooling module 70 may include a compressor, an evaporator, a condenser, valves, pipes, a liquid storage dryer, etc. The cooling module 70 is connected to the battery pack 31 through a pipe assembly 90 to form a first cooling circulation path, and the cooling medium circulates in the first cooling circulation path to dissipate heat from the battery pack 31. Specifically, the cooling medium at a lower temperature in the cooling module 70 enters the interior of the battery pack 31 from the pipe assembly 90, absorbs the heat generated by the battery cells 313 in the battery pack 31 and then has a higher temperature. The temperature of the battery pack 31 can be maintained within the required range. The cooling medium at a higher temperature flows out of the battery pack 31 from the pipe assembly 90 to the outside of the battery pack 31 and returns to the cooling module 70, and after being processed by the structure in the cooling module 70, it becomes a cooling medium at a lower temperature again. The cooling medium at a lower temperature can enter the battery pack 31 from the pipe assembly 90 again to form a circulating heat dissipation for the battery pack 31.

[0069] It should be noted that in this application, since the cooling medium performs immersion heat dissipation on the internal components of the energy storage device 100, the cooling medium needs to have the following characteristics: good electrical insulation, non-flammable and having a high flash point, an appropriate working temperature range, a long service life, good material compatibility, low weight, low viscosity, low corrosiveness, and sustainability. The cooling medium can be a coolant, a cooling gas, or a mixture of a coolant and a cooling gas. For example, the cooling medium includes but is not limited to hydrofluoroethers, synthetic oils (such as silicone oils), water (which needs to be sealed with silicone sealant or boron nitride for electrical isolation), fluorinated liquids, helium, nitrogen, fluorocarbons, or hydrocarbons, etc. The pipeline assembly 80 is a channel in the battery pack 31 for the cooling medium to flow through, and the channel can be formed by a pipe and / or a hollow structure in a cooling plate.

[0070] In an embodiment of the present application, the control module 50 is disposed at the top of the battery module 30 in the height direction Z, and the cooling module 70 is disposed on one side of the battery module 30 in the length direction X.

[0071] The battery pack 31 includes a plurality of sides. In an embodiment of the present application, the battery pack 31 is a cuboid and includes four sides. The pipeline assembly 80 and the circuit assembly 60 are connected to the battery module 30 on the same side of the battery pack 31. Within the range of the side of the battery module 30 where the circuit assembly 60 and the pipeline assembly 80 are connected (the side close to the hatch), the pipelines in the pipeline assembly 80 are connected to the battery pack 31 along the first direction, and the circuits in the circuit assembly 60 are connected to the battery pack 31 and / or the control module 50 along the second direction. Among them, the first direction is different from the second direction, which means that the projections of the first direction and the second direction on the XZ plane are not parallel. Specifically, the first direction intersects the second direction, and the intersection angle between the two can be orthogonal or non-orthogonal. For the convenience of description, the present application only takes the case where the first direction and the second direction are orthogonal as an example for illustration. For example, the first direction is the length direction X, and the second direction is the height direction Z; the first direction is the height direction Z. At this time, the cooling module 70 can be disposed on either side of the housing 10 in the length direction X. The control module 50 can be disposed on either side of the housing 10 in the height direction Z, or can be stacked in the battery pack 31. In the embodiment of the present application, the control module 50 is disposed on the top of the top battery pack 31, and the cooling module 70 is disposed on the left side in the front view of the energy storage device 100. It should be noted that the first direction and the length direction X can be completely the same or not completely the same, and there can be a slight deviation between the two (there is a small included angle between the two). Similarly, the second direction and the height direction Z can be completely the same or not completely the same, and there can be a slight deviation between the two (there is a small included angle between the two).

[0072] In the energy storage device 100 of the present application, the battery module 30 is disposed in the housing 10, the cooling module 70 is disposed on one side of the battery module 30, and the control module 50 is disposed on the other side of the battery module 30. The cooling module 70 is communicated with the battery pack 31 through the pipeline assembly 80 to form a first cooling circulation path. The control module 50 is electrically connected to the battery pack 31 through the circuit assembly 60. On the one hand, the setting of the first cooling circulation path allows the cooling medium to flow into the battery pack 31, realizing the immersion cooling and heat dissipation of the battery cells 313 in the battery pack 31, and improving the use safety of the battery pack 31; on the other hand, it realizes the reasonable layout of the entire energy storage device 100;

[0073] Please refer to Figures 1 to 5 , within the range of one side of the battery module 30, the pipelines in the pipeline assembly 80 are connected to the battery pack 31 on this side along the first direction, and the circuits in the circuit assembly 60 are connected to the battery pack 31 and / or the control module 50 along the second direction, and the first direction is different from the second direction.

[0074] Within the range on one side of the battery pack 31, the pipeline in the pipeline assembly 80 is connected to this side of the battery pack 31 along the first direction, and the wires in the wire assembly 60 are connected to each other along the second direction, and the first direction is different from the second direction, so that the pipelines and wires on this side of the battery pack 31 have different orientations and do not affect each other, which is beneficial to the disassembly, assembly and maintenance of the energy storage device 100.

[0075] Please refer to Figure 4 、 Figure 5 、 Figure 7 and Figure 9 In some embodiments, the battery module 30 includes a plurality of battery packs 31. The wire assembly 60 includes a signal wire group 61 and a power wire group 63. The signal wire group 61 is connected to adjacent battery packs 31 along the second direction, and the signal wire group 61 is also connected to the battery pack 31 and the control module 50. The power wire group 63 is connected to adjacent battery packs 31 along the second direction, and the power wire group 63 is also connected to the battery pack 31 and the control module 50.

[0076] Specifically, eight battery packs 31 in the embodiment of the present application are stacked along the height direction Z. The signal wire group 61 is a device for transmitting signals and monitoring data in the energy storage device 100. By connecting the battery pack 31 and the control module 50, the signal wire group 61 can monitor information such as the voltage, current and temperature of each battery cell 313 in the battery pack 31, and upload the information to the control module 50 for real-time monitoring and fault diagnosis of the battery module 30. The signal wire group 61 can also transmit commands from the control module 50 to the battery pack 31 after the control module 50 issues commands. For example, commands such as starting charging, stopping charging, starting discharging and stopping discharging. For another example, when the signal wire group 61 detects an abnormal situation in the battery pack 31, such as overcharging, over-discharging or overheating, the signal wire group 61 is responsible for transmitting relevant safety signals to the control module 50. After the control module 50 processes them, commands such as cutting off the power supply are issued to ensure the safe operation of the energy storage device 100.

[0077] The power wire group 63 is a device for transmitting electric energy in the energy storage device 100. The power wire group 63 is connected to the control module 50 after connecting the positive electrode interface 3119 and the negative electrode interface 3117 of the battery pack 31 to perform input (charging) and output (discharging) of electric energy. Compared with the signal wire group 61, the power wire group 63 can carry higher current to meet the large current requirements of the battery pack 31 during the charging and discharging processes. During the electric energy transmission process, the power wire group 63 will generate an electromagnetic field. In the embodiment of the present application, the signal wire group 61 and the power wire group 63 are connected to adjacent battery packs 31 along the height direction Z.

[0078] Please refer to Figure 4 and Figure 5 , Figure 7 andFigure 9 In some embodiments, the battery module 30 includes a first region 33 and a second region 35 at opposite ends in a first direction. The signal line group 61 and the power line group 63 on the battery module 30 are located in the first region 33 and the second region 35 of the battery module 30, respectively.

[0079] During the power transmission process, the electromagnetic field generated by the power line group 63 carrying high current will interfere with the operation of other electronic devices. Therefore, in this embodiment, when the lines in the line assembly 60 are connected to the battery pack 31 and / or the control module 50 along a second direction (height direction Z), the side surface of the battery module 30 connected to the line assembly 60 is divided into opposite first region 33 and second region 35 in the first direction (length direction X). The signal line group 61 is disposed in the first region 33 of the battery module 30, and the power line group 63 is disposed in the second region 35 of the battery module 30 to avoid electromagnetic interference between the signal line group 61 and the power line group 63. Further, the signal line group 61 and the power line group 63 do not interfere with each other spatially and are both connected to the battery pack 31 along the same direction (i.e., the first direction), which can make the layout of the line assembly 60 on the battery module 30 clearer and more reasonable and is conducive to disassembly, assembly and maintenance. In other embodiments of the present application, the first region 33 and the second region 35 can also be disposed at opposite ends in the width direction Y of the battery module 30 to meet the line requirements of different battery modules 30.

[0080] Please refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9 In some embodiments, the battery pack 31 is provided with a first interface 3111 and a second interface 3113. The pipeline assembly 80 is communicated with both the first interface 3111 and the second interface 3113. The battery module 30 further includes a third region 37. In the first direction, the third region 37 is located between the first region 33 and the second region 35; the first interface 3111 and the second interface 3113 are respectively located at opposite ends in the first direction of the third region 37 of the battery module 30. In this embodiment, the first interface 3111 is closer to the cooling module 70 in the length direction X.

[0081] Specifically, the first interface 3111 and the second interface 3113 are used to connect the battery pack 31 to the pipeline assembly 80, so as to connect to the cooling module 70 to form a first cooling circulation path for the cooling medium to flow. In some embodiments, the first interface 3111 is an interface on the battery pack 31 for the cooling medium to flow into the interior of the battery pack 31, and the second interface 3113 is an interface on the battery pack 31 for the cooling medium to flow out of the battery pack 31 to the outside. In other embodiments, the second interface 3113 is an interface on the battery pack 31 for the cooling medium to flow into the interior of the battery pack 31, and the first interface 3111 is an interface on the battery pack 31 for the cooling medium to flow out of the battery pack 31 to the outside.

[0082] More specifically, in the embodiments of the present application, the battery pack 31 includes a first region 33, a third region 37, and a second region 35 arranged in sequence in the first direction. Among them, the signal line group 61 is located in the first region 33 of the battery module 30, and the power line group 63 is located in the second region 35 of the battery module 30. The third region 37 between the first region 33 and the second region 35 is provided with a first interface 3111 and a second interface 3113. The first interface 3111 and the second interface 3113 do not intersect on the projection of the third region 37 in the XZ plane. Among them, the first interface 3111 is closer to the first region 33, the second interface 3113 is closer to the second region 35, and there is a certain distance between them. In other embodiments, the first interface 3111 may be located at a position on the third region 37 closer to the second region 35, and the second interface 3113 may be located at a position on the third region 37 closer to the first region 33. The connection line of the first interface 3111 and the second interface 3113 may be parallel to the length direction X in the XZ plane or may intersect. The first interface 3111 and the second interface 3113 are respectively located at opposite ends of the third region 37 of the battery module 30 in the first direction, which can make the circulation path of the cooling medium in a single battery pack 31 longer, thereby increasing the heat exchange time between the cooling medium and the battery cells 313, taking out more heat generated by the battery cells 313, making the cooling of the battery cells 313 more thorough, and improving the heat dissipation efficiency of the cooling medium.

[0083] Please refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9, in some embodiments, the battery pack 31 includes a housing 311 and battery cells 313 accommodated in the housing 311. The housing 311 is provided with a first interface 3111 and a second interface 3113 that communicate with the interior of the housing 311. The pipeline assembly 80 includes a first main pipeline 81, a second main pipeline 83, a first branch pipeline 85, and a second branch pipeline 87. The first main pipeline 81 communicates with the cooling module 70 and extends along a second direction. The second main pipeline 83 communicates with the cooling module 70 and extends along the second direction. The first branch pipeline 85 connects the first main pipeline 81 and the first interface 3111 and extends along a first direction. The second branch pipeline 87 connects the second main pipeline 83 and the second interface 3113 and extends along the first direction.

[0084] Specifically, when only one battery pack 31 is included in the battery module 30, there are two circulation paths for the cooling medium to flow along the first cooling circulation path. When the first interface 3111 serves as the interface for the cooling medium to flow into the interior of the battery pack 31 and the second interface 3113 serves as the interface for the cooling medium to flow out of the battery pack 31 to the outside, the circulation path for the cooling medium to flow along the first cooling circulation path is as follows: The cooling medium at a lower temperature in the cooling unit 73 of the cooling module 70 enters the first main pipeline 81 from the first main pipe opening (not shown) where the first main pipeline 81 is connected to the cooling module 70, then enters the first branch pipeline 85. After passing through the first branch pipeline 85, it enters the interior of the battery pack 31 from the first interface 3111. The cooling medium is in direct contact with the battery cells 313 provided inside the battery pack 31. After the cooling medium absorbs the heat of the battery cells 313, its temperature rises, and it flows out from the second interface 3113 to the second branch pipeline 87, then flows out from the second branch pipeline 87 to the second main pipeline 83, and is then output from the second main pipe opening (not shown) where the second main pipeline 83 is connected to the cooling module 70 and re-enters the cooling unit 73. The cooling unit 73 processes the cooling medium at a higher temperature into a cooling medium at a lower temperature, and the cooling medium at a lower temperature enters the first main pipeline 81 again from the first main pipe opening for cyclic circulation. Further, in this embodiment, in the height direction Z, the first interface 3111 is closer to the bottom of the battery module 30 than the second interface 3113, which is beneficial for the cooling medium to fill the housing 311 of the battery pack 31 and achieve more thorough heat dissipation.

[0085] When the second interface 3113 is the interface through which the cooling medium flows into the interior of the battery pack 31, and the first interface 3111 is the interface for the cooling medium to flow out to the exterior of the battery pack 31, the circulation path of the cooling medium flowing along the first cooling circulation path is as follows: The cooling medium at a relatively low temperature in the cooling unit 73 enters the second main pipeline 83 from the second main pipe opening (not shown) where the second main pipeline 83 is connected to the cooling module 70, then enters the second branch pipeline 87. After passing through the second branch pipeline 87, it enters the interior of the battery pack 31 from the second interface 3113. The cooling medium is in direct contact with the battery cells 313 provided inside the battery pack 31. After the cooling medium absorbs the heat of the battery cells 313, its temperature rises, and it flows out from the first interface 3111 to the first branch pipeline 85, then flows out from the first branch pipeline 85 to the first main pipeline 81, and is then output from the first main pipe opening (not shown) where the first main pipeline 81 is connected to the cooling module 70 and re-enters the cooling unit 73. The cooling unit 73 processes the cooling medium at a relatively high temperature into a cooling medium at a relatively low temperature, and the cooling medium at a relatively low temperature enters the second main pipeline 83 again through the second main pipe opening for circulation.

[0086] Further, when the battery module 30 includes multiple battery packs 31, each battery pack 31 will form a first cooling circulation path with the pipeline assembly 80. At this time, the circulation path of the first cooling circulation path is the same as the above, and will not be elaborated here. Different from the case where the battery module 30 includes one battery pack 31, at this time, the battery module 30 includes multiple first branch pipelines 85 and multiple second branch pipelines 87. Specifically, taking an example where a battery module 30 in the energy storage device 100 of the present application includes eight battery packs 31. The pipeline assembly 80 corresponding to the eight battery packs 31 includes one first main pipeline 81, one second main pipeline 83, eight first branch pipelines 85 and eight second branch pipelines 87. The first interface 3111 of each battery pack 31 is connected to one first branch pipeline 85, and the second interface 3113 of each battery pack 31 is connected to one second branch pipeline 87. The first branch pipeline 85 connected to the first interface 3111 of each battery pack 31 extends in the first direction from the first interface 3111 to connect to the first main pipeline 81. The second branch pipeline 87 connected to the second interface 3113 of each battery pack 31 extends in the first direction from the second interface 3113 to connect to the second main pipeline 83.

[0087] For the energy storage device 100 of this embodiment, eight first branch pipelines 85 and eight second branch pipelines 87 extend in the same direction (the first direction). The sixteen pipelines are substantially parallel to each other, without affecting each other, and have the same path, ensuring the uniformity and efficiency of the transportation of the cooling medium in the first cooling circulation path, and at the same time simplifying the layout of the pipeline assembly 90. In the line assembly 60, the signal line group 61 and the power line group 63 extend in the second direction, so that the pipeline assembly 80 and the line assembly 60 have different orientations, are substantially orthogonal to each other, and do not affect each other, which is conducive to the disassembly, installation and maintenance of the energy storage device 100.

[0088] Please refer to Figure 5 , Figure 7 and Figure 9 , in some embodiments, in the first direction (or the length direction X), the first main pipeline 81 and the second main pipeline 83 are located between the cooling module 70 and the battery module 30.

[0089] During the use of the energy storage device 100, any one of the battery pack 31, the line assembly 61 and the pipeline assembly 80 may have installation problems, damage problems or reach the end of its service life. Then it is necessary to disassemble and install it for repair, replacement or debugging. Generally, the battery pack 31, the line assembly 61 and the pipeline assembly 80 are disassembled and installed along the width direction Y. Since in the first direction (or the length direction X), the first main pipeline 81 and the second main pipeline 83 are located between the cooling module 70 and the battery module 30, when disassembling and installing at least one of the battery pack 31, the line assembly 61 and the pipeline assembly 80 along the width direction Y, the first main pipeline 81 and the second main pipeline 83 will not form an obstruction, which is conducive to improving the disassembly and installation efficiency.

[0090] Please refer to Figure 2 , Figure 3 and Figure 5 , in some embodiments, the housing 10 is provided with a first compartment 11 and a second compartment 13 arranged along the first direction. The cooling module 70 is accommodated in the first compartment 11. The battery module 30 and the control module 50 are accommodated in the second compartment 13. The control module 50 and the battery pack 31 are arranged along the second direction. The control module 50 is located on the outermost side of the battery module 30 in the second direction.

[0091] Specifically, inside the energy storage device 100, there is a cavity surrounded by the housing 10. The cavity is divided into a first chamber 11 and a second chamber 13 by means of internal partitions, protrusions and grooves on the housing 10, etc. The first chamber 11 and the second chamber 13 can be independent and sealed spaces from each other, or they can be non-independent and sealed spaces from each other, that is, the two can communicate. When the first chamber 11 and the second chamber 13 are independent and sealed spaces, the interiors of the first chamber 11 and the second chamber 13 can be filled with inert gas. The volumes of the first chamber 11 and the second chamber 13 can be the same or different. In this embodiment, the volume of the first chamber 11 is smaller than the volume of the second chamber 13. The division of the first chamber 11 and the second chamber 13 allows devices with different functions to be placed in different chambers, making the overall layout more reasonable. The cooling module 70 is placed in the first chamber 11, which can avoid the need to set up additional pipes and lines when the cooling module is installed outside the housing 10 in an external hanging form. That is, when the cooling module 70 is placed in the first chamber 11, the energy storage device 100 can have a higher integration degree, a more reasonable internal layout and a more concise appearance. At the same time, this layout is also conducive to the reasonable planning of the circuit assembly 60 and the pipeline assembly 80. When the control module 50 is located on the outermost side of the battery module 30 in the second direction, the control module 50 can be located on the top of the battery module 30 or on the bottom of the battery module 30. In the embodiment of the present application, the control module 50 is located on the top of the battery module 30, which occupies less space, shortens the routing paths of the circuit assembly 60 and the pipeline assembly 80 between the control module 50 and the battery module 30, and also ensures that the control module 50 is located on the outermost side of the battery module 30 in the second direction, thereby providing a more concise and streamlined appearance for the energy storage device 100.

[0092] Please refer to Figure 2 , in some embodiments, the housing 10 includes a first hatch 15 and a second hatch 19. The first hatch 15 covers the first chamber 11. The second hatch 19 covers the second chamber 13. The length of the first hatch 15 is less than the length of the second hatch 19.

[0093] Specifically, the setting of the first hatch 15 can play roles such as waterproofing, dustproofing, and anti-interference for the cooling module 70 in the first chamber 11. The setting of the second hatch 19 can play roles such as waterproofing, dustproofing, and anti-interference for both the battery module 30 and the control module 50 in the second chamber 13. The length of the first hatch 15 is less than the length of the second hatch 19, that is, the dimension of the first hatch 15 in the length direction X is less than the dimension of the second hatch 19 in the length direction X. In the width direction Y and the height direction Z, the dimensions of the first hatch 15 and the second hatch 19 can be kept consistent, making the appearance of the energy storage device 100 unified and concise. The overall reasonable layout of the energy storage device 100 is realized.

[0094] Please refer to Figure 4and Figure 6 In some embodiments, the battery module 30 includes a plurality of battery packs 31. The battery pack 31 is provided with a signal line interface 3115, and the control module 50 is provided with a signal line interface 511. The signal line group 61 includes a plurality of signal lines 611. At least one signal line 611 is electrically connected to the signal line interfaces 3115 on two adjacent battery packs 31 along the second direction, so that the plurality of battery packs 31 are connected in series. At least one signal line 611 is electrically connected to the signal line interface 3115 on the adjacent battery pack 31 and the signal line interface 511 on the control module 50 along the second direction, so that the battery module 30 is electrically connected to the control module 50.

[0095] The signal line 611 is used to electrically connect all the battery packs 31 in series from the control module 50 from head to tail. According to different signal acquisition requirements of the battery module 30, the signal line 611 may include at least one of a voltage acquisition signal branch line, a current acquisition signal branch line, a communication signal branch line, and a temperature sensing signal branch line. A plurality of branch lines can be converged to a signal line interface 3115 through signal multiplexing technology or multiplexing technology (such as I2C, CAN bus), so that a signal line interface 3115 can process multiple signals of the battery pack 31. The branch lines such as the temperature, current or voltage of the battery cell 313 are led out from both ends of the battery cell 313 and respectively connected to the same signal line interface 3115, and then connected to the signal line 611 to transmit signals, as Figure 4 shown.

[0096] For the eight battery packs 31 in the embodiment of the present application, in the second direction (height direction Z), from the bottom to the top are the first battery pack 31, the second battery pack 31, the third battery pack 31, the fourth battery pack 31, the fifth battery pack 31, the sixth battery pack 31, the seventh battery pack 31, and the eighth battery pack 31. In the height direction Z, the signal line 611 is used to connect two adjacent battery packs 31. One end of the signal line 611 is connected to the signal line interface 3115 of one of the battery packs 31, and the other end of the signal line 611 is connected to the signal line interface 3115 of the other battery pack 31. For example, for the adjacent first battery pack 31 and the second battery pack 31, one end of the signal line 611 is connected to the signal line interface 3115 of the first battery pack 31 located at the bottom in the height direction Z, and the other end of the signal line 611 is connected to the signal line interface 3115 of the second battery pack 31. For the adjacent fourth battery pack 31 and the fifth battery pack 31, one end of the signal line 611 is connected to the signal line interface 3115 of the fourth battery pack 31, and the other end of the signal line 611 is connected to the signal line interface 3115 of the second battery pack 31. For the topmost eighth battery pack 31, one end of the signal line 611 is connected to the signal line interface 3115 of the eighth battery pack 31, and the other end of the signal line 611 is connected to the signal line interface 511 of the control module 50. Thus, after the battery packs 31 of the battery module 30 are connected in series through the signal line 611, they are electrically connected to the control module 50 to transmit and receive signals. The signal line 611 extends along the height direction Z in the first area 33 of the battery module 30, while the power line group 63 extends along the length direction X in the second area 35 of the battery module 30. Thus, the signal line group 61 and the power line group 63 are separated to avoid mutual interference between the signal line group 61 and the power line group 63. At the same time, the signal line 611 has a different orientation from that of the pipeline assembly 80 extending along the first direction in the third area 37, realizing the separation of the orientation of the signal line group 61 and the pipeline assembly 80, which is beneficial to the disassembly, installation, and maintenance of the energy storage device 100.

[0097] Please refer to Figure 4 and Figure 5 , in some embodiments, the battery module 30 includes a plurality of battery packs 31. The battery pack 31 is provided with a negative interface 3117 and a positive interface 3119. The control module 50 is provided with a total positive interface 512 and a total negative interface 513. The power line group 63 includes a plurality of first power lines 631 and second power lines 633. At least one first power line 631 is electrically connected to the positive interface 3119 and the negative interface 3117 on two adjacent battery packs 31 along the second direction, so that a plurality of battery packs 31 are connected in series. The first power line 631 is electrically connected to the positive interface 3119 on the adjacent battery pack 31 and the total negative interface 513 on the control module 50 along the second direction. The second power line 633 is electrically connected to the negative interface 3117 on the battery pack 31 farthest apart and the total positive interface 512 on the control module 50 along the second direction.

[0098] Specifically, the negative electrode interface 3117 and the positive electrode interface 3119 on the battery pack 31 are used to be electrically connected to the adjacent battery pack 31 and the control module 50 through the power line group 63 to achieve the input and output of electric energy. In the height direction Z, the negative electrode interface 3117 and the positive electrode interface 3119 of the first battery pack 31 to the eighth battery pack 31 are both located in the second area 35 of the battery module 30. In this application, the arrangement of the negative electrode interface 3117 and the positive electrode interface 3119 can be arranged at intervals in the height direction Z. More specifically, the positive electrode interface 3119 can be closer to the top of the battery module 30 in the height direction Z, or the negative electrode interface 3117 can be closer to the top of the battery module 30 in the height direction Z. The total positive interface 512 and the total negative interface 513 on the control module 50 are used to be electrically connected to the battery module 30 through the power line group 63 to achieve the input and output of electric energy to the battery pack 31. In this embodiment, in the height direction Z, the total negative interface 513 is closer to the battery pack 31 than the total positive interface 512.

[0099] The first power line 631 and the second power line 633 of the power line group 63 are used to connect all the battery packs 31 in series, which can facilitate the series connection of all the battery packs 31 and the electrical connection between the battery module 30 and the control module 50. For a battery module 30, the number of the first power lines 631 is the same as the number of the battery packs 31 in the battery module 30. The number of the second power lines 633 is the same as the number of the battery modules 30. It can be understood that for the 1st to 8th battery packs 31 in the embodiment of the present application, there are 8 first power lines 631 and 1 second power line 633 in total. In the second direction (height direction Z), the first power line 631 is used to connect two adjacent battery packs 31. One end of the first power line 631 is connected to the positive electrode interface 3119 of one battery pack 31, and the other end of the first power line 631 is connected to the negative electrode interface 3117 of the other battery pack 31. For example, for the adjacent 1st battery pack 31 and 2nd battery pack 31, one end of the first power line 631 is connected to the positive electrode interface 3119 of the 1st battery pack 31, and the other end of the first power line 631 is connected to the negative electrode interface 3117 of the 2nd battery pack 31. For the adjacent 2nd battery pack 31 and 3rd battery pack 31, one end of the first power line 631 is connected to the positive electrode interface 3119 of the 2nd battery pack 31, and the other end of the first power line 631 is connected to the negative electrode interface 3117 of the 3rd battery pack 31. For the adjacent 7th battery pack 31 and 8th battery pack 31, one end of the first power line 631 is connected to the positive electrode interface 3119 of the 7th battery pack 31, and the other end of the first power line 631 is connected to the negative electrode interface 3117 of the 8th battery pack 31. For the 8th battery pack 31 and the control module 50, one end of the first power line 631 is connected to the positive electrode interface 3119 of the 8th battery pack 31, and the other end of the first power line 631 is connected to the total negative interface 513 on the control module 50. The second power line 633 is used to electrically connect the negative electrode interface 3117 on the battery pack 31 (the 1st battery pack 31) farthest apart and the total positive interface 512 on the control module 50 along the second direction. Thus, through the first power line 631 and the second power line 633, the energy storage device 100 realizes the series connection of all the battery packs 31 in the battery module 30 and the control module 50, and further realizes the monitoring of the operation data of the battery module 30 by the control module 50 and the control of the charge and discharge of the battery module 30.

[0100] Thus, after the battery packs 31 of the battery module 30 are connected in series through the power cable group 63, they are electrically connected to the control module 50 to input and output electric energy. The power cable group 63 extends along the second direction in the second area 35 on the front side of the battery module 30, and is separated from the signal cable group 61 in the first area 33 in the second direction, avoiding mutual interference between the signal cable group 61 and the power cable group 63. The power cable group 63 has a different running direction from that of the pipeline assembly 80 extending in the first direction in the third area 37, realizing the separation of the running directions of the power cable group 63 and the pipeline assembly 80, which is beneficial to the disassembly, installation and maintenance of the energy storage device 100.

[0101] Please continue to refer to Figure 4 and Figure 5 In some embodiments, the cooling module 70 is also connected to the control module 50 through the pipeline assembly 90 to form a second cooling circulation path for the cooling medium to flow. The control module 50 includes a box body 51 and a control unit 53 accommodated in the box body 51. The box body 51 is provided with a first opening 514 and a second opening 515 that communicate with the inside of the box body 51. The pipeline assembly 90 includes a first main pipeline 91, a second main pipeline 93, a first branch pipeline 95 and a second branch pipeline 97. The first main pipeline 91 communicates with the cooling module 70 and extends along the second direction. The first main pipeline 93 communicates with the cooling module 70 and extends along the second direction. The first branch pipeline 95 connects the first main pipeline 91 and the first opening 514 and extends along the first direction. The second branch pipeline 97 connects the second main pipeline 93 and the second opening 515 and extends along the first direction.

[0102] Specifically, the box body 51 is used to load and support the components in the control module 50. The control unit 53 is a device in the control module 50 that controls the input and output of electric energy (charging and discharging of the battery module 30). The first opening 514 and the second opening 515 can be provided at any position on the side of the box body 51 close to the hatch. In this embodiment, the first opening 514 and the second opening 515 are provided at opposite ends in the length direction X on the side of the box body 51 close to the hatch.

[0103] Specifically, the second cooling circulation path has two circulation routes. When the first opening 514 serves as the interface for the cooling medium to flow into the interior of the control module 50 and the second opening 515 serves as the interface for the cooling medium to flow out to the exterior of the control module 50, the circulation route of the cooling medium flowing along the second cooling circulation path is as follows: The cooling medium at a relatively low temperature in the cooling unit 73 enters the first main pipeline 91 through the first main pipeline port where the first main pipeline 91 is connected to the cooling module 70, then enters the first branch pipeline 95. After passing through the first branch pipeline 95, it enters the interior of the control module 50 from the first opening 514. The cooling medium is in direct contact with devices such as the control unit 53 provided inside the control module 50. After the cooling medium absorbs the heat of devices such as the control unit 53, its temperature rises. It flows out from the second opening 515 to the second branch pipeline 97, then flows out from the second branch pipeline 97 to the second main pipeline 93 of the pipeline assembly 90, and is then output through the second main pipeline port where the second main pipeline 93 is connected to the cooling module 70 and re-enters the cooling unit 73. The cooling unit 73 processes the cooling medium at a relatively high temperature into a cooling medium at a relatively low temperature, and the cooling medium at a relatively low temperature enters the first main pipeline 91 of the pipeline assembly 90 again from the first main pipeline port for circulating flow. Further, in this embodiment, in the height direction Z, the first opening 514 is closer to the bottom of the battery module 30 than the second opening 515, which is beneficial for the cooling medium to fill the box body 51 of the control module 50 and dissipate heat more thoroughly.

[0104] When the second opening 515 serves as the interface for the cooling medium to flow into the interior of the control module 50 and the first opening 514 serves as the interface for the cooling medium to flow out to the exterior of the control module 50, the circulation route of the cooling medium flowing along the second cooling circulation path is as follows: The cooling medium at a relatively low temperature in the cooling unit 73 enters the first main pipeline 93 through the second main pipeline port where the first main pipeline 93 is connected to the cooling module 70, then enters the second branch pipeline 97. After passing through the second branch pipeline 97, it enters the interior of the control module 50 from the second opening 515. The cooling medium is in direct contact with devices such as the control unit 53 provided inside the control module 50. After the cooling medium absorbs the heat generated by devices such as the control unit 53, its temperature rises. It flows out from the first opening 514 to the first branch pipeline 95, then flows out from the first branch pipeline 95 to the first main pipeline 91, and is then output through the first main pipeline port where the first main pipeline 91 is connected to the cooling module 70 and re-enters the cooling unit 73. The cooling unit 73 processes the cooling medium at a relatively high temperature into a cooling medium at a relatively low temperature, and the cooling medium at a relatively low temperature enters the second main pipeline 83 from the second main pipeline port again for circulating flow.

[0105] When the control module 50 controls the input and output of electrical energy of the battery pack 31, heat will also be generated. The accumulation of heat will cause the temperature of the control module 50 to rise, which will in turn affect the working performance and service life of the control module 50 to be controlled. Therefore, the energy storage device 100 is communicated with the control module 50 through the pipeline assembly 90 to form a second cooling circulation path for the cooling medium to flow, which can transport the cooling medium into the control module 50. After the cooling medium inside the control module 50 absorbs the heat of the immersed devices (such as the control unit 53), it flows out of the control module 50 and takes away the heat, thereby cooling the control module 50 and further ensuring the use safety of the energy storage device 100.

[0106] Please refer to Figure 4 , in some embodiments, the control module 50 includes a first area 55, a second area 57 and a third area 59. The first area 55 and the second area 57 of the control module 50 are respectively located at opposite ends in the first direction. The third area 59 of the control module 50 is located between the first area 55 and the second area 57 of the control module 50. The signal line group 61 and the power line group 63 on the control module 50 are respectively located in the first area 55 and the second area 57 of the control module 50.

[0107] Specifically, when the line assembly 60 and the pipeline assembly 90 are connected to the control module 50 along the second direction, the front side surface of the control module 50 (the side surface connected to the line assembly 60 and the pipeline assembly 90) is sequentially divided into a first area 55, a third area 59 and a second area 57 in the first direction. Among them, the signal line group 61 is located in the first area 55 of the control module 50, and the power line group 63 is located in the second area 57 of the control module 50. The third area 59 between the first area 55 and the second area 57 of the control module 50 is provided with a first opening 514 and a second opening 515 for connecting to the pipeline assembly 90. More specifically, the first area 55 of the control module 50 is aligned with the first area 33 of the battery module 30 in the height direction Z, the second area 57 of the control module 50 is aligned with the second area 35 of the battery module 30 in the height direction Z, and the third area 59 of the control module 50 is aligned with the second area 35 of the battery module 30 in the height direction Z.

[0108] Thus, not only is the mutual interference of the signal line group 61, the pipeline assembly 90, and the power line group 63 corresponding to the first area 55, the third area 59, and the second area 57 in space realized, but the one-to-one alignment method also makes the path clear when the line assembly 60 connects the battery pack 31 and the battery module 30, reduces the length of the line assembly 60, makes the overall layout of the energy storage device 100 clearer and more reasonable, and is conducive to maintenance.

[0109] The projections of the first opening 514 and the second opening 515 on the XZ plane where the third region 59 of the control module 50 is located do not intersect and are at a certain distance from each other. In some examples, both the first opening 514 and the second opening 515 are close to the second region 57 of the control module 50, where the first opening 514 is farther from the second region 57 of the control module 50, as Figure 4 shown. In other examples, the first opening 514 and the second opening 515 are respectively located at opposite ends of the third region 59 of the control module 50 in the first direction. The connection line between the first opening 514 and the second opening 515 can be parallel to the length direction X in the XZ plane or intersect. The first opening 514 and the second opening 515 being respectively located at opposite ends of the third region 59 of the control module 50 in the first direction can make the flow path of the cooling medium in the control module 50 longer, thereby increasing the heat exchange time between the cooling medium and devices such as the control unit 53, taking out more heat generated by devices such as the control unit 53, making the cooling of devices such as the control unit 53 more thorough, and improving the heat dissipation efficiency of the cooling medium. Please refer to Figures 7 to 12 , in other embodiments, the housing 10, the battery module 30, the circuit assembly 60, and the pipeline assembly 80 together form a modular energy storage module 10A. The control module 50 is a modular control module 50A. The cooling module 70 is a modular cooling module 70A. The modular cooling module 70A and the modular control module 50A are respectively located on opposite sides of the modular energy storage module 10A in the first direction.

[0110] Specifically, in the embodiments of the present application, the energy storage device 100 may include a modular energy storage module 10A, a modular control module 50A, and a modular cooling module 70A, which are independent of each other. The modular energy storage module 10A is connected to the modular cooling module 70A through the pipeline assembly 80, the modular energy storage module 10A is connected to the modular control module 50A through the circuit assembly 60, and the modular control module 50A is connected to the modular cooling module 70A through the pipeline assembly 80. The modular cooling module 70A provides cooling medium and circulation power for the modular energy storage module 10A and the modular control module 50A, realizes heat conversion, and ensures the uniform temperature of the battery module 30. The modular control module 50A provides power circulation and signal acquisition for the modular energy storage module 10A. The modular control module 50A and the modular cooling module 70A are located on opposite sides of the modular energy storage module 10A in the length direction X. The modular control module 50A and the modular cooling module 70A can be interchanged in position in the length direction X, and only one position relationship is shown in the embodiments of the present application.

[0111] Please refer to Figure 8 and Figure 9, in some other embodiments, the housing 10 is provided with a first chamber 12 for accommodating the battery module 30. The housing 10 includes a first door 17. The first door 17 is used to shield the first chamber 12. The control module 50 includes a box body 51 and a control unit 53. The box body 51 is provided with a second chamber 517 for accommodating the control unit 53. The box body 51 includes a second door 519. The second door 519 is used to shield the second chamber 517. The cooling module 70 includes a cabinet body 71 and a cooling unit 73. The cabinet body 71 is provided with a third chamber 711 for accommodating the cooling unit 73. The cabinet body 71 includes a third door 713. The third door 713 is used to shield the third chamber 711.

[0112] Specifically, the modular energy storage module 10A, the modular control module 50A, and the modular cooling module 70A are respectively provided with a first door 17, a second door 519, and a third door 713. The first door 17, the second door 519, and the third door 713 corresponding to the first chamber 12, the second chamber 517, and the third chamber 711 are independent of each other. The maintenance and operation of each module can be carried out independently without disturbing other modules, thereby improving the maintenance efficiency and operation convenience of the energy storage device 100. On the other hand, the pipeline assembly 80, the circuit assembly 60, and the duct assembly 90 are all arranged on the side where the first door 17, the second door 519, and the third door 713 are located. When the pipeline assembly 80, the circuit assembly 60, or the duct assembly 90 needs to be installed and maintained frequently, the devices to be installed / repaired can be directly operated by opening the door, which is beneficial to the installation and maintenance of the devices in the energy storage device 100. Since the devices in each chamber can be inspected separately without having to inspect the entire energy storage device 100, independent chambers help to quickly locate the source of the problem and improve the repair efficiency when a failure occurs.

[0113] Please refer to Figure 10 , Figure 13 and Figure 14 , in some other embodiments, the battery module 30 includes a plurality of battery packs 31. The battery pack 31 is provided with a signal line interface 3115, and the modular control module 50A is provided with a signal line interface 511. The signal line group 61 includes a plurality of signal lines 611. At least one signal line 611 is electrically connected to the signal line interfaces 3115 on two adjacent battery packs 31 along the second direction to connect the plurality of battery packs 31 in series. One end of at least one signal line 611 is connected to the signal line interface 3115 on a battery pack 31, and the other end passes through the housing 10 and is electrically connected to the signal line interface 511 on the modular control module 50A to electrically connect the battery module 30 and the modular control module 50A.

[0114] Specifically, the connection mode of the signal lines 611 between the battery packs 31 in the battery module 30 is the same as the previous connection mode, that is, the signal line interfaces 3115 on the battery packs 31 are connected in series in the height direction Z in sequence, which will not be elaborated here. It should be noted that the previous control module 50 and the battery module 30 are arranged in the same housing 10. Therefore, after the battery packs 31 are connected in series with the signal lines 611, they can be directly connected to the control unit 53 in the control module 50 with a signal line 611 in the housing 10. In this embodiment, however, the modular energy storage module 10A and the modular control module 50A are independent of each other. The battery module 30 in the modular energy storage module 10A is accommodated in the first chamber 12 of the housing 10, and the control unit 53 in the modular control module 50A is accommodated in the second chamber 517 of the box body 51. Therefore, for the signal line 611 connected to the control unit 53 of the modular control module 50A, one end is connected to the signal line interface 3115 of the battery pack 31 at the top in the first chamber 12, and the other end needs to pass through the housing 10 and then be electrically connected to the signal line interface 511 on the control unit 53. Since multiple signal lines 611 are required between the battery packs 31, which is more than the signal lines 611 in the control module 50, the frequency of maintenance and repair is higher. When the signal lines 611 in the modular energy storage module 10A need to be repaired and maintained separately, only the first door 17 of the modular energy storage module 10A needs to be opened, which will not affect the signal lines 611 in the modular control module 50A.

[0115] Please refer to Figure 9 and Figure 12 , in some other embodiments, the battery module 30 includes multiple battery packs 31. The battery pack 31 is provided with a negative electrode interface 3117 and a positive electrode interface 3119. The control module 50 is provided with a total positive interface 512 and a total negative interface 513; the power line group 63 includes multiple first power lines 631 and a second power line 633. At least one first power line 631 is electrically connected to the positive electrode interface 3119 and the negative electrode interface 3117 on two adjacent battery packs 31 along the second direction to connect the multiple battery packs 31 in series. One end of the first power line 631 is connected to the positive electrode interface 3119 on one battery pack 31, and the other end passes through the housing 10 and is electrically connected to the total negative interface 513 on the modular control module 50A. One end of the second power line 633 is electrically connected to the negative electrode interface 3117 on the outermost battery pack 31, extends along the second direction and then passes through the housing 10, and the other end of the second power line 633 is electrically connected to the total positive interface 512 on the modular control module 50A.

[0116] Specifically, the connection manner between battery packs 31 in the battery module 30 through the first power line 631 is the same as the previous connection manner, that is, they are connected in series in the height direction Z in sequence according to the positive electrode interface 3119 and the negative electrode interface 3117, which will not be elaborated here. It should be noted that the previous control module 50 and the battery module 30 are arranged in the same housing 10. Therefore, after the battery packs 31 are connected in series with each other by the first power line 631, the positive electrode interface 3119 of the battery pack 31 located below the control module 50 is directly electrically connected to the total negative interface 513 in the control module 50 through the first power line 631 inside the housing 10, and the negative electrode interface 3117 of the outermost battery pack 31 is directly electrically connected to the total positive interface 512 in the control module 50 through the second power line 633 inside the housing 10. In this embodiment, however, the modular energy storage module 10A and the modular control module 50A are independent of each other. Therefore, after one end of the first power line 631 is connected to the positive electrode interface 3119 of the battery pack 31 located below the control module 50, the other end of the first power line 631 needs to pass through the housing 10 and be electrically connected to the total negative interface 513 in the modular control module 50A. After one end of the second power line 633 is electrically connected to the negative electrode interface 3117 on the outermost battery pack 31, the other end of the second power line 633 needs to extend to the top of the top battery pack 31 in the Z height direction and then extend along the length direction X and pass through the housing 10 to be electrically connected to the total positive interface 512 in the control module 50. The energy storage device 100 of the present application realizes physical isolation by respectively arranging the power line groups 63 in the first chamber 12 and the second chamber 517, and can reduce the mutual influence between the power line groups 63.

[0117] Please refer to Figure 13 and Figure 14 In still some embodiments, the modular energy storage module 10A includes a plurality of them. The plurality of modular energy storage modules 10A are arranged along a first direction, and the plurality of modular energy storage modules 10A include a first side and a second side that are opposite to each other in the first direction. The modular cooling module 70A and the modular control module 50A are respectively located on the first side and the second side.

[0118] Specifically, the energy storage device 100 can increase or decrease the number of modular energy storage modules 10A according to user requirements. The number of modular energy storage modules 10A in the energy storage device 100 can be one, two, three, four, or more. The embodiments of the present application only show the embodiment where the number of modular energy storage modules 10A is three, and it does not mean that it can only be increased to three modular energy storage modules 10A. For the energy storage device 100 of this embodiment, the modular cooling module 70A, the modular energy storage module 10A, the modular energy storage module 10A, the modular energy storage module 10A, and the modular control module 50A are arranged in sequence in the first direction in the energy storage device 100. When it is necessary to increase the number of modular energy storage modules 10A, one or more modular energy storage modules 10A can be added between the modular cooling module 70A and the modular energy storage module 10A in the first direction; or, one or more modular energy storage modules 10A can be added between the modular energy storage module 10A and the modular energy storage module 10A in the first direction; or, one or more modular energy storage modules 10A can be added between the modular energy storage module 10A and the modular control module 50A in the first direction. The same is true when it is necessary to reduce the modular energy storage module 10A, which will not be elaborated here. This way of adjusting the number of modular energy storage modules 10A is simple and convenient, without the need for excessive operations on the modular cooling module 70A and the modular cooling module 70A, and can improve the flexibility of the energy storage device 100.

[0119] Please refer to Figure 10 、 Figure 13 and Figure 14 In still some embodiments, the pipeline assembly 80 further includes a first main pipeline 88 and a second main pipeline 89. The first main pipeline 88 is arranged at the bottom of the housing 10 and is communicated with the first main pipeline 81. The first main pipeline 88 extends along the first direction. The second main pipeline 89 is arranged at the bottom of the housing 10 and is communicated with the second main pipeline 83. The second main pipeline 89 extends along the first direction. The first main pipeline 88 and the second main pipeline 89 in the modular energy storage module 10A penetrate through the housing 10 and are respectively communicated with the first main pipeline 88 and the second main pipeline 89 in the adjacent modular energy storage module 10A.

[0120] Specifically, in an embodiment where the energy storage device 100 includes a plurality of modular energy storage modules 10A, taking 3 modular energy storage modules 10A as an example, the first modular energy storage module 10A, the second modular energy storage module 10A, and the third modular energy storage module 10A are arranged in sequence in the direction from the modular cooling module 70A to the modular control module 50A. Each modular energy storage module 10A has a first main pipeline 88 and a second main pipeline 89. For the first main pipeline 88, one end of the first main pipeline 88 of the first modular energy storage module 10A is connected to the cooling unit 73 in the modular cooling module 70A, the other end of the first main pipeline 88 of the first modular energy storage module 10A is connected to one end of the first main pipeline 88 of the second modular energy storage module 10A, the other end of the first main pipeline 88 of the second modular energy storage module 10A is connected to one end of the first main pipeline 88 of the third modular energy storage module 10A, and the other end of the first main pipeline 88 of the third modular energy storage module 10A is connected to the first main pipeline 81 of the modular control module 50A. For the second main pipeline 89, one end of the second main pipeline 89 of the first modular energy storage module 10A is connected to the modular cooling module 70A, the other end of the second main pipeline 89 of the first modular energy storage module 10A is connected to one end of the second main pipeline 89 of the second modular energy storage module 10A, the other end of the second main pipeline 89 of the second modular energy storage module 10A is connected to one end of the second main pipeline 89 of the third modular energy storage module 10A, and the other end of the second main pipeline 89 of the third modular energy storage module 10A is connected to the second main pipeline 83 of the modular control module 50A. Among them, the first main pipeline 88 of each modular energy storage module 10A is also connected to the first main pipeline 81 in the first chamber 12 of each modular energy storage module 10A, and the second main pipeline 89 of each modular energy storage module 10A is also connected to the second main pipeline 83 in the first chamber 12 of each modular energy storage module 10A, so as to be connected to the first cooling circulation path of each modular energy storage module 10A. Among them, the first main pipeline 81 of the modular control module 50A is connected to the first main pipeline 88 of the third modular energy storage module 10A, and the second main pipeline 83 of the modular control module 50A is connected to the second main pipeline 89 of the third modular energy storage module 10A, which can make the second cooling circulation path of the modular energy storage module 10A and the second cooling circulation path of the modular control module 50A both be connected to the modular cooling module 70A. Thus, it is realized that one modular cooling module 70A can cool down multiple modular energy storage modules 10A and the modular control module 50A, improving the heat dissipation efficiency of the energy storage device 100 while ensuring the simplest structure of the energy storage device 100.

[0121] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to the embodiments of the present application without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage device (100), characterized in that: include: Housing (10); A battery module (30), the battery module (30) being arranged in the housing (10) and comprising at least one battery pack (31); a control module (50), the control module (50) being arranged on any side or the top of the battery module (30) along the width direction and being electrically connected to the battery module (30) via a circuit assembly (60); and A cooling module (70) is connected to the battery module (30) via a pipe assembly (80) to form a first cooling circulation passage for a cooling medium to flow and contact the battery pack (31).

2. The energy storage device (100) according to claim 1, characterized in that: The control module (50) is arranged on the top of the battery module (30), and the cooling module (70) is arranged on any side of the battery module (30) along the width direction.

3. The energy storage device (100) according to claim 1, characterized in that: Within a range on one side of the battery module (30), the pipeline in the pipeline assembly (80) is connected to the battery pack (31) on the side along a first direction, and the circuit in the circuit assembly (60) is connected to the battery pack (31) and / or the control module (50) along a second direction, and the first direction is different from the second direction.

4. The energy storage device (100) according to claim 3, characterized in that: The battery module (30) includes a plurality of battery packs (31), and the circuit assembly (60) includes: a signal line group (61), the signal line group (61) connecting the adjacent battery packs (31) along the second direction, the signal line group (61) also connecting the battery packs (31) and the control module (50); and A power line group (63), wherein the power line group (63) is connected to the adjacent battery packs (31) along the second direction, and the power line group (63) is also connected to the battery pack (31) and the control module (50).

5. The energy storage device (100) according to claim 4, characterized in that: The battery module (30) comprises a first area (33) and a second area (35) at two opposite ends in the first direction, and the signal line group (61) and the power line group (63) on the battery module (30) are respectively located in the first area (33) and the second area (35) of the battery module (30).

6. The energy storage device (100) according to claim 5, characterized in that: The battery pack (31) is provided with a first interface (3111) and a second interface (3113), and the pipe assembly (80) is connected to both the first interface (3111) and the second interface (3113); the battery module (30) further comprises a third area (37), and in the first direction, the third area (37) is located between the first area (33) and the second area (35); the first interface (3111) and the second interface (3113) are both located at opposite ends of the third area (37) of the battery module (30) in the first direction.

7. The energy storage device (100) according to claim 4, characterized in that: The battery pack (31) comprises a shell (311) and a battery cell (313) accommodated in the shell (311), the shell (311) being provided with a first interface (3111) and a second interface (3113) communicating with the interior of the shell (311); the pipeline assembly (80) comprises: a first main pipeline (81), the first main pipeline (81) being in communication with the cooling module (70) and extending along the second direction; a second main passage (83), the second main passage (83) being in communication with the cooling module (70) and extending along the second direction; a first branch pipeline (85), the first branch pipeline (85) connecting the first main pipeline (81) and the first interface (3111) and extending along the first direction; and A second branch pipeline (87), wherein the second branch pipeline (87) connects the second main pipeline (83) and the second interface (3113) and extends along the first direction.

8. The energy storage device (100) according to claim 7, characterized in that: In the first direction, the first main line (81) and the second main line (83) are located between the cooling module (70) and the battery module (30).

9. The energy storage device (100) according to any one of claims 4 to 8, characterized in that: The shell (10) is provided with a first compartment (11) and a second compartment (13) arranged along the first direction; the cooling module (70) is accommodated in the first compartment (11); the battery module (30) and the control module (50) are accommodated in the second compartment (13); the control module (50) and the battery pack (31) are arranged along the second direction; and the control module (50) is located at the outermost side of the battery module (30) in the second direction.

10. The energy storage device (100) according to claim 9, characterized in that: The battery module (30) comprises a plurality of battery packs (31); the battery packs (31) and the control module (50) are both provided with a signal line interface (3115); the signal line group (61) comprises: A plurality of signal lines (611), at least one of the signal lines (611) being electrically connected to the signal line interfaces (3115) on two adjacent battery packs (31) along the second direction, so that the plurality of battery packs (31) are connected in series, and at least one of the signal lines (611) being electrically connected to the signal line interfaces (3115) on the adjacent battery packs (31) and the signal line interface (3115) on the control module (50) along the second direction, so that the battery module (30) is electrically connected to the control module (50).

11. The energy storage device (100) according to claim 9, characterized in that: The battery module (30) comprises a plurality of battery packs (31), the battery packs (31) are provided with a negative electrode interface (3117) and a positive electrode interface (3119), the control module (50) is provided with a total positive interface (512) and a total negative interface (513), and the power line group (63) comprises: a plurality of first power lines (631), at least one of the first power lines (631) being electrically connected along the second direction to the positive electrode interfaces (3119) and the negative electrode interfaces (3117) on two adjacent battery packs (31), so that the plurality of battery packs (31) are connected in series, and the first power line (631) being electrically connected along the second direction to the positive electrode interfaces (3119) on the adjacent battery packs (31) and the total negative interface (513) on the control module (50); and A second power line (633), the second power line (633) is electrically connected along the second direction to the negative electrode interface (3117) on the battery pack (31) that is farthest away and the total positive interface (512) on the control module (50).

12. The energy storage device (100) according to claim 9, characterized in that: The cooling module (70) is also connected to the control module (50) through a pipe assembly (90) to form a second cooling circulation passage for the flow of cooling medium; the control module (50) comprises a box body (51) and a control unit (53) accommodated in the box body (51); the box body (51) is provided with a first opening (514) and a second opening (515) connected to the inside of the box body (51); the pipe assembly (90) comprises: a first main passage (91), the first main passage (91) being in communication with the cooling module (70) and extending along the second direction; a second main passage (93), the second main passage (93) being in communication with the cooling module (70) and extending along the second direction; a first branch pipe (95), the first branch pipe (95) connecting the first main pipe (91) and the first opening (514) and extending along the first direction; and A second branch pipe (97), wherein the second branch pipe (97) connects the second main pipe (93) and the second opening (515), and extends along the first direction.

13. The energy storage device (100) according to claim 12, characterized in that: The control module (50) comprises a first area (33), a second area (35) and a third area (37); the first area (33) and the second area (35) of the control module (50) are respectively located at two opposite ends in the first direction, and the third area (37) of the control module (50) is located between the first area (33) and the second area (35) of the control module (50); The signal line group (61) and the power line group (63) on the control module (50) are respectively located in the first area (33) and the second area (35) of the control module (50); and / or The first opening (514) and the second opening (515) are both located at two opposite ends of the third area (37) of the control module (50) in the first direction.

14. The energy storage device (100) according to claim 9, characterized in that: The shell (10) comprises a first hatch (15) and a second hatch (19), wherein the first hatch (15) covers the first compartment (11), and the second hatch (19) covers the second compartment (13), and the length of the first hatch (15) is shorter than the length of the second hatch (19).

15. The energy storage device (100) according to any one of claims 4 to 8, characterized in that: The housing (10), the battery module (30), the circuit assembly (60) and the pipeline assembly (80) together form a modular energy storage module (10A); the control module (50) is a modular control module (50A); the cooling module (70) is a modular cooling module (70A); and the modular cooling module (70A) and the modular control module (50A) are respectively located on opposite sides of the modular energy storage module (10A) in the first direction.

16. The energy storage device (100) according to claim 15, characterized in that: The shell (10) is provided with a first chamber (12) for accommodating the battery module (30), and the shell (10) includes a first door (17), and the first door (17) is used to cover the first chamber (12); the modular control module (50A) includes a box body (51) and a control unit (53), and the box body (51) is provided with a second chamber (12) for accommodating the control unit (53), and the box body (51) includes a second door (519), and the second door (519) is used to cover the second chamber (12); the cooling module (70) includes a cabinet (71) and a cooling unit (73), and the cabinet (71) is provided with a third chamber (711) for accommodating the cooling unit (73), and the cabinet (71) includes a third door (713), and the third door (713) is used to cover the third chamber (711).

17. The energy storage device (100) according to claim 15, characterized in that: The battery module (30) comprises a plurality of battery packs (31); the battery packs (31) and the modular control module (50A) are both provided with a signal line interface (3115); the signal line group (61) comprises: A plurality of signal lines (611), at least one of the signal lines (611) being electrically connected to the signal line interfaces (3115) on two adjacent battery packs (31) along the second direction so that the plurality of battery packs (31) are connected in series, and at least one of the signal lines (611) having one end connected to the signal line interface (3115) on one of the battery packs (31) and the other end passing through the housing (10) and electrically connected to the signal line interface (3115) on the modular control module (50A) so that the battery module (30) is electrically connected to the modular control module (50A).

18. The energy storage device (100) according to claim 15, characterized in that: The battery module (30) comprises a plurality of battery packs (31), the battery packs (31) are provided with a negative electrode interface (3117) and a positive electrode interface (3119), the modular control module (50A) is provided with a total positive interface (512) and a total negative interface (513); the power line group (63) comprises: a plurality of first power lines (631), at least one of the first power lines (631) being electrically connected to the positive electrode interface (3119) and the negative electrode interface (3117) on two adjacent battery packs (31) along the second direction, so that the plurality of battery packs (31) are connected in series, one end of the first power line (631) being connected to the positive electrode interface (3119) on one of the battery packs (31), and the other end passing through the housing (10) and being electrically connected to the total negative interface (513) on the modular control module (50A); and A second power line (633), one end of which is electrically connected to the negative electrode interface (3117) on the outermost battery pack (31), and extends along the second direction and passes through the shell (10), and the other end of the second power line (633) is electrically connected to the total positive interface (512) on the modular control module (50A).

19. The energy storage device (100) according to claim 15, characterized in that: The modular energy storage module (10A) includes a plurality of modular energy storage modules (10A), the plurality of modular energy storage modules (10A) are arranged along the first direction, the plurality of modular energy storage modules (10A) include a first side and a second side opposite to each other in the first direction, and the modular cooling module (70A) and the modular control module (50A) are respectively located on the first side and the second side.

20. The energy storage device (100) according to claim 19, characterized in that: The pipeline assembly (80) further comprises: a first main pipeline (88), the first main pipeline (88) being arranged at the bottom of the housing (10) and being in communication with the first main pipeline (81) of the pipeline assembly (80), the first main pipeline (88) extending along the first direction; and A second main pipeline (89), the second main pipeline (89) is arranged at the bottom of the shell (10) and is in communication with the second main pipeline (83) of the pipeline assembly (80); the second main pipeline (89) extends along the first direction; the first main pipeline (88) and the second main pipeline (89) in the modular energy storage module (10A) pass through the shell (10) and are respectively in communication with the first main pipeline (88) and the second main pipeline (89) in the adjacent modular energy storage module (10A).

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