energy storage device

Abstract

The application provides an energy storage device, and relates to the technical field of energy storage. The energy storage device comprises a frame body, a plurality of energy storage modules, a plurality of joint assemblies and a plurality of connecting regions. The frame body has a containing cavity. The plurality of energy storage modules are stacked in the containing cavity in the vertical direction. Each energy storage module comprises a main body region and a connecting region. The connecting region is connected with the main body region. The joint assemblies are integrated in the connecting regions. In the vertical direction, the adjacent two joint assemblies are connected with each other. Therefore, the energy storage device effectively solves the problems of low energy density, large space occupation, complex installation and maintenance and high cost of the energy storage system.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more particularly to an energy storage device. Background Technology

[0002] Energy storage devices generally adopt a rail-mounted modular installation architecture. Although this technical solution has advantages such as standardized design and flexible expansion, it has problems such as low energy density, large space occupation, time-consuming installation and maintenance, and high cost in practical applications. Utility Model Content

[0003] This application provides an energy storage device in which multiple energy storage modules can be stacked vertically, and the upper and lower connection areas can be quickly plugged in. Furthermore, one connection area can integrate multiple connectors, thereby at least partially solving the aforementioned technical problems.

[0004] To achieve the above objectives, this application provides an energy storage device, comprising: a frame having a receiving cavity; a plurality of energy storage modules stacked vertically within the receiving cavity, each energy storage module including a main body region and a connecting region, the connecting region being connected to the main body region; and a connector assembly integrated in the connecting region, wherein adjacent connector assemblies are connected to each other in the vertical direction.

[0005] In some embodiments, the frame includes a base and a plurality of side plates protruding from the base. The plurality of side plates are connected to the base in the vertical direction and cooperate with each other to form a receiving cavity. One of the side plates is provided with a connection port extending in the vertical direction and penetrating the top side of the side plate. The main body area is disposed in the receiving cavity, and the connection area protrudes out of the frame through the connection port.

[0006] In some embodiments, the connector assembly includes an electrical connector, a heat exchange connector, and a communication connector.

[0007] In some embodiments, the electrical connector is electrically connected to the body region; the electrical connector includes a first electrical contact and a second electrical contact disposed opposite to each other, and in two adjacent connector assemblies, the first electrical contact of one connector assembly is electrically connected to the second electrical contact of the other connector assembly.

[0008] In some embodiments, the first electrical contact is provided with a first mating part, and the second electrical contact is provided with a second mating part. In the vertical direction, in two adjacent connector assemblies, the first mating part of one connector assembly is engaged with the second mating part of the other connector assembly.

[0009] In some embodiments, the heat exchange joint is in fluid communication with the main body region; the heat exchange joint includes a first heat exchange portion and a second heat exchange portion disposed opposite to each other, the first heat exchange portion being slidably connected to the second heat exchange portion to allow fluid communication between the first heat exchange portion and the second heat exchange portion.

[0010] In some embodiments, the first heat exchange part includes a first housing, the second heat exchange part includes a second housing, the first housing is sleeved on the outer periphery of the second housing and the two are slidably fitted; the first housing is provided with a first flow guide port at one end away from the second housing, the second housing is provided with a third flow guide port at one end away from the first housing, and the first flow guide port and the third flow guide port are in fluid communication.

[0011] In some embodiments, the first heat exchange section further includes a valve core and a limiting plate disposed in the first housing, the limiting plate being slidably engaged with the valve core, and the limiting plate having a second flow port communicating with the first flow port.

[0012] In some embodiments, the second heat exchange section further includes a second piston and a second elastic member disposed within the second housing, the second piston and the second elastic member being elastically connected; a protrusion is provided on the inner wall of the second housing, the protrusion being located at one end away from the third guide port, and the protrusion having a fourth guide port communicating with the third guide port.

[0013] In some embodiments, the first heat exchange section further includes: a first elastic member, sleeved on the outer periphery of the valve core, one end of the first elastic member being elastically connected to a limiting plate, and the other end being elastically connected to the end of the first housing that is away from the second housing.

[0014] In some embodiments, the communication connector is communicatively connected to the main body area; the communication connector includes a first communication portion and a second communication portion disposed opposite to each other, and in two adjacent connector assemblies, the first communication portion of one connector assembly cooperates with the second communication portion of the other connector assembly.

[0015] In some embodiments, the bottom of the main body area is provided with a guide post, and the top is provided with a positioning hole corresponding to the guide post.

[0016] In the energy storage device of this application embodiment, through the above technical solution, the connector assembly integrates multiple connectors with different functions, and in the vertical direction, the connectors of two adjacent connector assemblies are connected in the same corresponding manner. Therefore, this energy storage device effectively solves the problems of low energy density, large space occupation, complex installation and maintenance, and high cost of energy storage systems.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0020] Figure 1 This is a schematic diagram of the overall structure of the energy storage device provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the frame structure provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the energy storage module provided in the embodiments of this application;

[0023] Figure 4 yes Figure 3 Top view of the energy storage module;

[0024] Figure 5 yes Figure 3 A bottom view of the energy storage module;

[0025] Figure 6 This is a schematic diagram of the structure of the first electrical connection provided in an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the second electrical connection provided in an embodiment of this application;

[0027] Figure 8 This is a schematic diagram of the structure of the first heat exchange section provided in an embodiment of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the second heat exchange section provided in an embodiment of this application;

[0029] Figure 10 This is a schematic diagram of the structure of the heat exchanger provided in the embodiment of this application;

[0030] Figure 11 This is a schematic diagram of the structure of the first communication interface provided in the embodiments of this application. Figure 1 ;

[0031] Figure 12 This is a schematic diagram of the structure of the second communication interface provided in the embodiments of this application. Figure 1 ;

[0032] Figure 13 This is a schematic diagram of the structure of the first communication interface provided in the embodiments of this application. Figure 2 ;

[0033] Figure 14 This is a schematic diagram of the structure of the second communication interface provided in the embodiments of this application. Figure 2 .

[0034] Explanation of reference numerals in the attached figures:

[0035] 1-Frame; 10-Accommodation cavity; 11-Base; 12-Side panel; 121-Connection port; 122-Heat dissipation vent; 111-Base plate; 112-Enclosure panel; 113-Cavity; 114-Forklift access;

[0036] 2-Energy storage module; 21-Main body area; 211-Battery module; 212-Communication module; 22-Connection area; 221-Guide post; 222-Positioning hole;

[0037] 3-Connector assembly; 33-Electrical connector; 34-Heat exchange connector; 35-Communication connector;

[0038] 331 - First electrical connection; 332 - Second electrical connection; 341 - First heat exchange section; 342 - Second heat exchange section; 351 - First communication connection; 352 - Second communication connection;

[0039] 3311 - First mating part; 3312 - Second mating part; 3511 - Third mating part; 3521 - Fourth mating part;

[0040] 3401-First housing; 3402-Valve core; 3403-Limiting plate; 3404-First elastic element; 3405-First end cap; 3406-Second housing; 3407-Second piston; 3408-Second elastic element; 3409-Second end cap; 3410-Protruding structure; 3411-Protrusion; 4061-First section; 4062-Second section;

[0041] 51-First guide port; 52-Second guide port; 53-Third guide port; 54-Fourth guide port; 55-Connecting port. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0043] As the global energy structure accelerates its transition to green and low-carbon practices, the energy storage industry is entering a critical period of large-scale development. Currently, mainstream energy storage devices generally adopt a rail-mounted modular installation architecture. While this technology offers advantages such as standardized design and flexible expansion, it still has significant technical shortcomings in practical applications:

[0044] First, regarding system integration efficiency, the rail-mounted design requires a certain gap between each energy storage module to ensure maintenance operation space and thermal safety distance, directly leading to a reduction in battery system energy density and insufficient utilization of the energy storage compartment space. Second, at the engineering implementation level, the hierarchical stacking of energy storage modules requires repeated calibration with a guiding and positioning mechanism. A more prominent issue lies in the electrical connection architecture. Existing technology uses a multi-level cable series connection, which not only results in high wiring harness costs but also increases contact resistance and failure rates due to the excessive number of connectors. Furthermore, for medium to large-scale energy storage systems using liquid cooling, each independent energy storage device requires complex piping components such as water distributors and hose connectors, increasing the number of heat exchange system parts. This increases manufacturing costs and reduces system reliability due to the risk of pipeline leakage.

[0045] Therefore, the aforementioned technical bottlenecks severely restrict the industrialization process of reducing costs and increasing efficiency in energy storage systems. Breakthrough innovations are urgently needed in areas such as system integration architecture, thermal management solutions, and electrical connection methods to enhance the economic efficiency and market competitiveness of energy storage equipment.

[0046] Based on this, this application provides an energy storage device, including a frame, multiple energy storage modules, and connector assemblies. The frame has a receiving cavity; multiple energy storage modules are stacked vertically within the receiving cavity, and each energy storage module includes a main body area and a connecting area, with the connecting area connected to the main body area. The connector assembly is integrated into the connecting area, and in the vertical direction, adjacent connector assemblies are connected one-to-one. Therefore, this energy storage device effectively solves the problems of low energy density, large space occupation, complex installation and maintenance, and high cost of energy storage systems. A detailed description will follow with reference to the accompanying drawings.

[0047] Please refer to Figure 1 and Figure 2 The energy storage device includes a frame 1, multiple energy storage modules 2, and connector assemblies 3. The frame 1 has a receiving cavity 10. The multiple energy storage modules 2 are stacked vertically within the receiving cavity 10. Each energy storage module 2 includes a main body region 21 and a connecting region 22, with the connecting region 22 connected to the main body region 21. The connector assembly 3 is integrated into the connecting region 22, and adjacent connector assemblies 3 are connected to each other in the vertical direction.

[0048] Specifically, by compactly stacking multiple energy storage modules 2 vertically within the accommodating cavity 10 of the frame 1, the space occupied between the energy storage modules 2 is minimized, significantly improving the space utilization and overall energy density of the energy storage device, and solving the problem of serious space waste in the guide rail installation method.

[0049] The energy storage module 2 adopts an integrated design, and the connector components 3 of adjacent modules can be directly connected in the vertical direction, eliminating the complicated cable wiring and connector installation steps, greatly shortening the assembly time, and facilitating modular maintenance and replacement.

[0050] The bottom of the energy storage module 2 is provided with a guide post 221, which is located in the main body area 21. This allows for quick guidance to avoid jamming. The top of the energy storage module 2 is provided with a positioning hole 222 (e.g., a lifting hole) corresponding to the guide post 221, which improves installation and maintenance efficiency and reduces the cost of series cables and liquid cooling pipelines.

[0051] The connector assembly 3 is integrated into the connection area 22, significantly reducing the use of wiring harnesses and connectors, thus lowering material and labor installation costs. The integrated connector assembly 3 design also reduces the volume of the housing 1, further saving on manufacturing and transportation costs.

[0052] In some embodiments, the frame 1 includes a base 11 and a plurality of side plates 12 protruding from the base 11. The plurality of side plates 12 are connected to the base 11 in the vertical direction and cooperate with each other to form a receiving cavity 10. One of the side plates 12 is provided with a connection port 121 extending in the vertical direction and penetrating through the top side of the side plate 12. The main body area 21 of the energy storage module 2 is disposed in the receiving cavity 10. The connection area 22 of the energy storage module 2 protrudes out of the frame 1 through the connection port 121. This not only facilitates the installation, maintenance and replacement of the energy storage module 2, but also improves the flexibility and scalability of the system.

[0053] The connector 121 is roughly U-shaped, which provides more operating space or a more flexible interface, making it easier to insert or fix the connectors, cables or other components of the energy storage module 2. This shape also reduces the difficulty of alignment and facilitates quick installation.

[0054] The base 11 includes a base plate 111 and multiple surrounding plates 112. The surrounding plates 112 are vertically connected to the base plate 111 and cooperate to form a cavity 113. On the width or direction of the base 11, each of the two surrounding plates 112 has several forklift openings 114, with the forklift openings 114 of one surrounding plate 112 facing each other. This allows forklifts to easily insert into the cavity 113 below the base 11 for handling, greatly facilitating the loading, unloading, and transportation of the equipment, especially in logistics, warehousing, or industrial environments where frequent mobile equipment movement is required. Furthermore, during installation and maintenance, forklifts can directly lift the entire energy storage device from the bottom of the frame 1, providing maintenance personnel with a significantly larger operating space.

[0055] The side panel 12 has multiple heat dissipation vents 122, which expose at least part of the energy storage module 2. This facilitates the rapid dissipation of heat generated during the operation of the energy storage module 2, avoiding the temperature rise problem caused by heat accumulation. Furthermore, it can reduce the overall weight of the frame 1, further reducing the cost of the energy storage system.

[0056] Please see Figure 3 , Figure 4 and Figure 5 The connector assembly 3 is integrated into the connection area 22. The connector assembly 3 includes an electrical connector 33, a heat exchange connector 34, and a communication connector 35 to reduce the use of a large number of wire harnesses and connectors, thereby reducing material costs and labor installation costs.

[0057] Please see Figures 4 to 7 The electrical connector 33 is electrically connected to the main body area 21 (e.g., battery module). The electrical connector 33 includes a first electrical contact portion 331 and a second electrical contact portion 332 arranged opposite each other in the vertical direction. In the vertical direction, in two adjacent connector assemblies 3, the first electrical contact portion 331 of one connector assembly 3 is electrically connected to the second electrical contact portion 332 of the other connector assembly 3. That is, the second electrical contact portion 332 of the previous connector assembly 3 cooperates with the first electrical contact portion 331 of the next connector assembly 3 to achieve electrical connection.

[0058] The first electrical contact 331 has a first mating part 3311, and the second electrical contact 332 has a second mating part 3312. In the vertical direction, the first mating part 3311 and the second mating part 3312 are engaged with each other in two adjacent connection areas 22. One of the first mating part 3311 and the second mating part 3312 is a protrusion, and the other is an adapter groove.

[0059] One of the first electrical contact 331 and the second electrical contact 332 is the positive terminal, and the other is the negative terminal. In the connection area 22, the electrical connection between the upper and lower electrical connectors 33 is achieved by vertically butt-joining the first electrical contact 331 and the second electrical contact 332, thereby eliminating the need for complex cable wiring and connector installation steps. Furthermore, this design makes the installation of the energy storage module 2 faster, reduces manual operation time and installation costs, and lowers the risk of failure due to wiring errors.

[0060] Please see Figure 4 , Figure 5 , Figure 8 , Figure 9 and Figure 10The heat exchange joint 34 is in fluid communication with the main body region 21. For example, the main body region 21 is provided with a heat exchange plate, and the connecting region 22 is provided with a heat exchange joint 34 in fluid communication with the heat exchange plate. The heat exchange plate performs heat exchange treatment on the main body region 21 (e.g., a battery module). The heat exchange plate is filled with a heat exchange medium, which can be a liquid cooling medium or a heating medium. In this way, the heat exchange plate can provide cooling or heating functions under different operating conditions. This dual function enables the system to adapt to a variety of application scenarios, whether it is necessary to reduce or increase the temperature.

[0061] Please see Figure 4 , Figure 8 and Figure 9 The heat exchange joint 34 includes a first heat exchange section 341 and a second heat exchange section 342 arranged opposite to each other. The first heat exchange section 341 is slidably connected to the second heat exchange section 342 to allow fluid communication between the first heat exchange section 341 and the second heat exchange section 342. The slidable connection between the first heat exchange section 341 and the second heat exchange section 342 enables the assembly of the heat exchange joint 34. When the two joint assemblies 3 are connected vertically, the second heat exchange section 342 of the previous heat exchange joint 34 is connected to the first heat exchange section 341 of the next heat exchange joint 34, eliminating the need for complex piping and manual adjustments. Furthermore, during energy storage device expansion or maintenance, only the corresponding energy storage module 2 needs to be added or replaced, and the liquid cooling pipeline can be automatically connected without redesigning or adjusting the overall heat exchange system, improving the system's scalability and ease of maintenance.

[0062] Please see Figure 8 and Figure 10 The first heat exchange unit 341 includes a first housing 3401, and the second heat exchange unit 342 includes a second housing 3406. The first housing 3401 is sleeved on the outer periphery of the second housing 3406 and the two are slidably fitted. The slidable fit allows relative movement between the two housings to change the fluid flow path inside the heat exchange joint 34, thereby improving the heat exchange efficiency.

[0063] The first housing 3401 is provided with a first flow guide port 51 at the end opposite to the second housing 3406, and the second housing 3406 is provided with a third flow guide port 53 at the end opposite to the first housing 3401. The first flow guide port 51 and the third flow guide port 53 are in fluid communication and can form a closed fluid circulation path.

[0064] The first heat exchange section 341 also includes a valve core 3402 and a limiting plate 3403 disposed within the first housing 3401. The limiting plate 3403 is fixed to the inner wall of the first housing 3401 and slides with the valve core 3402 to control the valve core 3402 from shaking during movement, which can be used to precisely control the fluid flow rate. The limiting plate 3403 has a second guide port 52 communicating with the first guide port 51. The valve core 3402 includes a fixed shaft 34021 and a first piston 34022 connected together, with the first piston 34022 located at one end near the second housing 3406.

[0065] When the first heat exchange section 341 and the second heat exchange section 342 are not in fluid communication, the fixed shaft 34021 and the first piston 34022 are both located inside the first housing 3401. The first piston 34022 abuts against the rightmost end of the limiting plate 3403 and closes the second guide port 52, preventing fluid from flowing from the second heat exchange section 342 to the first heat exchange section 341. When the first heat exchange section 341 and the second heat exchange section 342 are in fluid communication, the first piston 34022 moves away from the limiting plate 3403 and makes the second guide port 52 in fluid communication with the first guide port 51, thereby allowing fluid to flow between the first heat exchange section 341 and the second heat exchange section 342.

[0066] The first heat exchange section 341 also includes a first elastic element 3404, which is sleeved on the outer periphery of the valve core 3402. One end of the first elastic element 3404 is elastically connected to the limiting plate 3403, and the other end is elastically connected to the end of the first housing 3401 opposite to the second housing 3406 (i.e., the first end cap 3405). The first elastic element 3404 provides an elastic connection, enabling the valve core 3402 to automatically adjust its position according to pressure changes within the system. This helps ensure that the valve core 3402 is always in the optimal position under different operating conditions.

[0067] Please see Figure 9 and Figure 10 The second heat exchange unit 342 also includes a second piston 3407 and a second elastic member 3408 disposed within the second housing 3406, wherein the second piston 3407 and the second elastic member 3408 are elastically connected. The second elastic member 3408 provides an elastic connection, enabling the second piston 3407 to automatically adjust its position according to pressure changes within the system. This automatic adjustment function helps maintain system stability and optimize fluid flow.

[0068] The inner wall of the second housing 3406 is provided with a protrusion 3411, which is located at one end away from the third guide port 53, and the protrusion 3411 is provided with a fourth guide port 54 that communicates with the third guide port 53.

[0069] Please see Figure 10One end of the valve core 3402 abuts against the second piston 3407. When the valve core 3402 pushes the second piston 3407 to slide to the protrusion 3411, the first guide port 51, the second guide port 52, the third guide port 53 and the fourth guide port 54 are in fluid communication with each other, thereby realizing the fluid communication between the first heat exchange section 341 and the second heat exchange section 342.

[0070] The first housing 3401 and the second housing 3406 are coaxially arranged, and both have the same axial and radial directions.

[0071] The first housing 3401 has a first end cap 3405 at one end along its axial direction, and the other end is an open structure. The first end cap 3405 has a plurality of first guide ports 51 that extend along the axial direction, and the first piston 3403 has a plurality of second guide ports 52 that extend along the axial direction.

[0072] The second housing 3406 has a second end cap 3409 at one end along its axial direction, and an open structure at the other end. Specifically, the second housing 3406 includes a first segment 4061 and a second segment 4062 connected together. The first segment 4061 is connected to the second end cap 3409, and the second end cap 3409 has multiple third flow ports 53 extending along the axial direction. The second segment 4062 has a protruding structure 3410 protruding from the inner peripheral wall of the second housing 3406. This protruding structure 3410 can be a continuous or discontinuous ring structure. A limiting structure 3411 is provided at the connection between the second end 32 and the first segment 4061, and the limiting structure 3411 is connected to the protruding structure 3410. The limiting structure 3411 has multiple fourth flow ports 54 extending along the axial direction, and a connecting port 55 communicating with the fourth flow ports 54 is provided at the connection between the limiting structure 3411 and the protruding structure 3410.

[0073] Therefore, when the valve core 3402 slides to the limiting structure 3411, the first guide port 51, the second guide port 52, the third guide port 53 and the fourth guide port 54 are in fluid communication with each other, ensuring that the fluid can flow smoothly through the guide ports, thereby realizing the connection between the two heat exchange parts.

[0074] Please see Figure 10 The working principle of the heat exchange tube is as follows: When the first heat exchange section 341 and the second heat exchange section 342 are in contact, under the action of external force, the second heat exchange section 342 slides towards the first guide port 51 of the first heat exchange section 341, and the valve core 3402 moves towards the third guide port 53 of the second heat exchange section 342. At the same time, the first piston 34022 of the valve core 3402 pushes the second piston 3407 to move inward (e.g., Figure 10(Moving from center to left), the first elastic element 3404 and the second elastic element 3408 of the two heat exchange sections are compressed synchronously. When the first piston 34022 of the valve core 3402 slides to the limiting structure 3411, the first guide port 51, the second guide port 52, the third guide port 53 and the fourth guide port 54 are fluidly connected to each other, ensuring that the fluid can flow smoothly through the guide ports, thereby realizing the connection between the two heat exchange sections. Therefore, when the two joint assemblies 3 are connected vertically, the upper and lower heat exchange joints 34 can directly achieve fluid connection, that is, the second heat exchange section 342 of the upper heat exchange joint 34 is connected to the first heat exchange section 341 of the lower heat exchange joint 34. For example, the upper heat exchange joint 34 can be fluidly connected to the lower heat exchange joint 34 through a connector, so that there is no need for complex pipeline wiring and manual adjustment. On the other hand, when the energy storage device is expanded or maintained, only the corresponding energy storage module 2 needs to be added or replaced, and the liquid cooling pipeline can be automatically connected without redesigning or adjusting the overall heat exchange system, which improves the scalability and maintenance convenience of the system.

[0075] Please see Figure 4 , Figure 5 , Figure 11 and Figure 12 The communication connector 35 is communicatively connected to the main body area 21. The communication connector 35 includes a first communication part 351 and a second communication part 352 arranged opposite to each other. In two adjacent connector assemblies 3, the first communication part 351 of one connector assembly 3 cooperates with the second communication part 352 of the other connector assembly 3.

[0076] Please see Figure 13 and Figure 14 The first communication connector 351 is provided with a third mating part 3511, and the second communication connector 352 is provided with a fourth mating part 3512. In the vertical direction, the third mating part 3511 and the fourth mating part are engaged with each other in two adjacent connection areas 22. One of the third mating part 3511 and the fourth mating part 3512 is a protrusion, and the other is an adapter groove.

[0077] By aligning the first communication connector 351 and the second communication connector 352 vertically, the automatic docking of the two communication connectors 35 is achieved, eliminating the need for complex cable wiring and connector installation steps. Furthermore, this design makes the installation of the energy storage module 2 faster, reducing manual operation time and installation costs, while also lowering the risk of malfunctions due to wiring errors.

[0078] In one embodiment, the first heat exchange section 341 further includes a first sealing ring fitted around the outer periphery of the limiting plate 3403. The second heat exchange section 342 further includes a second sealing ring fitted around the outer periphery of the second piston 3407. The first and second sealing rings ensure the sealing of the two heat exchange joints 34 during the docking process, preventing fluid leakage, reducing manual intervention, and improving installation efficiency.

[0079] The aforementioned energy storage module 2 can be a battery pack or a battery module, and no particular limitation is made here.

[0080] Therefore, the energy storage device provided in this application effectively solves the problems of low energy density, large space occupation, complex installation and maintenance, and high cost of energy storage systems.

[0081] In the description of this application, 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 number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0084] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An energy storage device, characterized in that, include: The frame has a receiving cavity; Multiple energy storage modules are stacked vertically within the accommodating cavity. Each energy storage module includes a main body area and a connecting area, and the connecting area is connected to the main body area. A connector assembly is integrated into the connection area, and in the vertical direction, two adjacent connector assemblies are connected to each other.

2. The energy storage device according to claim 1, characterized in that, The frame includes a base and multiple side plates protruding from the base. The multiple side plates are connected to the base in the vertical direction and cooperate with each other to form the receiving cavity. One of the side plates is provided with a connection port extending in the vertical direction and penetrating the top side of the side plate. The main body area is disposed in the receiving cavity, and the connection area protrudes from the frame body through the connection port.

3. The energy storage device according to claim 1 or 2, characterized in that, The connector assembly includes an electrical connector, a heat exchange connector, and a communication connector.

4. The energy storage device according to claim 3, characterized in that, The electrical connector is electrically connected to the main body area; The electrical connector includes a first electrical contact portion and a second electrical contact portion disposed opposite to each other. In two adjacent connector assemblies, the first electrical contact portion of one connector assembly is electrically connected to the second electrical contact portion of the other connector assembly.

5. The energy storage device according to claim 4, characterized in that, The first electrical contact is provided with a first mating part, and the second electrical contact is provided with a second mating part. In the vertical direction, in two adjacent connector assemblies, the first mating part of one connector assembly is engaged with the second mating part of the other connector assembly.

6. The energy storage device according to claim 3, characterized in that, The heat exchange joint is in fluid communication with the main body area; The heat exchange joint includes a first heat exchange section and a second heat exchange section arranged opposite to each other. The first heat exchange section is slidably connected to the second heat exchange section to allow fluid communication between the first heat exchange section and the second heat exchange section.

7. The energy storage device according to claim 6, characterized in that, The first heat exchange section includes a first housing, and the second heat exchange section includes a second housing. The first housing is sleeved on the outer periphery of the second housing and the two are slidably fitted together. The first housing has a first flow port at the end opposite to the second housing, and the second housing has a third flow port at the end opposite to the first housing. The first flow port and the third flow port are in fluid communication.

8. The energy storage device according to claim 7, characterized in that, The first heat exchange section further includes a valve core and a limiting plate disposed in the first housing. The limiting plate is slidably engaged with the valve core, and the limiting plate has a second flow port that communicates with the first flow port.

9. The energy storage device according to claim 7, characterized in that, The second heat exchange section further includes a second piston and a second elastic element disposed within the second housing, wherein the second piston and the second elastic element are elastically connected. The inner wall of the second housing is provided with a protrusion, the protrusion is located at one end away from the third flow port, and the protrusion has a fourth flow port that communicates with the third flow port.

10. The energy storage device according to claim 8, characterized in that, The first heat exchange section further includes: a first elastic element, sleeved on the outer periphery of the valve core, one end of the first elastic element being elastically connected to the limiting plate, and the other end being elastically connected to the end of the first housing opposite to the second housing.

11. The energy storage device according to claim 3, characterized in that, The communication connector is communicatively connected to the main body area; The communication connector includes a first communication connector and a second communication connector arranged opposite to each other. In two adjacent connector assemblies, the first communication connector of one connector assembly cooperates with the second communication connector of the other connector assembly.

12. The energy storage device according to claim 1 or 2, characterized in that, The bottom of the main body area is provided with guide posts, and the top is provided with positioning holes corresponding to the guide posts.

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