Energy storage system

Abstract

The utility model discloses an energy storage system, which comprises a cabinet body, a heat management plate, an energy storage module, a protection assembly and a circuit breaker, and is characterized in that the cabinet body is provided with a containing cavity, the heat management plate is arranged in the containing cavity and is connected with the cabinet body, and the heat management plate divides the containing cavity into at least one energy storage cavity; the energy storage module is arranged in the energy storage cavity and detachably connected with the heat management plate, and the protection assembly is detachably connected with the cabinet body to cover and seal the energy storage cavity; the circuit breaker is connected to the side, away from the energy storage module, of the protection assembly and is in conductive connection with the energy storage module. According to the invention, the energy storage cavity is defined by the thermal management plate and the cabinet body to directly accommodate the energy storage module, and the energy storage cavity is covered by the protection assembly to form the closed space, so that the energy storage module can be directly integrated into the cabinet body to form an integrated design, the battery pack box body, corresponding colloid and other fixing structures are simplified, and the battery pack is convenient to assemble and disassemble. The overall weight of the energy storage system is effectively reduced, and meanwhile the space utilization rate and the overall energy density are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage, and particularly relates to an energy storage system. BACKGROUND

[0002] The energy storage cabinet is usually provided with multiple battery packs in parallel, wherein each battery pack is a single integrated shell, liquid cooling plate, single battery and the like structure, so that the integrated whole pack is heavy, and multiple devices need to be coordinated to assemble, integrate and disassemble during the integration of the whole cabinet and system maintenance, which is inconvenient to disassemble and assemble, has high disassembly and assembly cost, and is difficult to maintain in the later period. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to solve the problems that the multiple battery packs are directly integrated and assembled in the cabinet, the whole pack of the battery pack is heavy, and the disassembly and assembly and later maintenance are difficult.

[0004] TECHNICAL SCHEME: An energy storage system provided by an embodiment of the application comprises:

[0005] A cabinet body has a containing cavity;

[0006] A thermal management plate member is arranged in the containing cavity and connected with the cabinet body, and the thermal management plate member divides the containing cavity into at least one energy storage cavity;

[0007] An energy storage module is arranged in the energy storage cavity and detachably connected with the thermal management plate member;

[0008] A protection assembly is detachably connected with the cabinet body to cover and seal the energy storage cavity;

[0009] A circuit breaker is connected to a side of the protection assembly away from the energy storage module and electrically connected with the energy storage module.

[0010] In some embodiments, the energy storage system further comprises a support assembly arranged in the containing cavity and connected with the cabinet body, and the thermal management plate member is connected with the support assembly;

[0011] The support assembly comprises multiple support plates, at least two support plates are arranged opposite along a length direction, and the support plate comprises:

[0012] A fixed part extends along a first direction and is connected with the cabinet body;

[0013] A bearing part extends along a second direction and is connected with the fixed part, and two ends of the thermal management plate member along the second direction are respectively connected with the bearing parts of the multiple support plates;

[0014] The first direction intersects with the second direction.

[0015] In some embodiments, the thermal management plate member comprises:

[0016] The liquid cooling plate is arranged on one side of the bearing component along a first direction and connected with the bearing component;

[0017] The plurality of limiting connecting parts are connected to the side of the liquid cooling plate away from the bearing component, and at least two limiting connecting parts are arranged at intervals along a third direction;

[0018] The limiting connecting part and the liquid cooling plate form a positioning space, the energy storage module is arranged in the positioning space, and the energy storage module is detachably connected with the limiting connecting part; and the third direction intersects the first direction and the second direction.

[0019] In some embodiments, the energy storage module comprises:

[0020] At least one battery pack, each battery pack comprising a plurality of battery cells arranged along the third direction; the battery pack is arranged in the positioning space and attached to the liquid cooling plate;

[0021] A plurality of end plates, two of which are arranged on both sides of one battery pack along the third direction and connected with the battery pack; the end plate has a plurality of first through holes, and the first through holes penetrate the end plate along the first direction;

[0022] A flexible fixing member is arranged around the outer circumferential side of the end plate and the battery pack and connected with the battery pack and the end plate;

[0023] A plurality of locking members, each of which is detachably arranged in one first through hole;

[0024] The limiting connecting part has a plurality of fixing holes, the opening of the fixing hole faces the first through hole, and each locking member is detachably arranged in one fixing hole, so that the end plate, the limiting connecting part and the locking member are detachably connected.

[0025] In some embodiments, the energy storage system comprises a fixing assembly arranged in the energy storage cavity and connected with the cabinet;

[0026] The fixing assembly comprises a plurality of fixing members, at least two of which are arranged at intervals along the second direction, and the protection assembly is connected with the plurality of fixing members and covers the energy storage cavity.

[0027] In some embodiments, the protection assembly comprises:

[0028] A first plate member connected with the cabinet and covering the energy storage cavity; the first plate member has a second through hole penetrating the first plate member along the third direction;

[0029] A second plate member detachably connected to the side of the first plate member close to the energy storage module and covering the second through hole; the second plate member has a third through hole penetrating the second plate member along the third direction; and a circuit breaker is connected to the side of the second plate member away from the energy storage module and partially arranged in the third through hole.

[0030] In some embodiments,

[0031] The second plate member further has a fourth through hole and a fifth through hole, both of which pass through the second plate member along the third direction;

[0032] The energy storage system further comprises:

[0033] A first adapter is connected to the side of the second plate member away from the energy storage module and partially penetrates the fourth through hole; the first adapter is in conductive connection with the energy storage module;

[0034] A second adapter is connected to the side of the second plate member away from the energy storage module and partially penetrates the fifth through hole; the second adapter is in conductive connection with the energy storage module;

[0035] A first plug-in member is arranged on the side of the first plate member away from the energy storage module and is plugged with the first adapter;

[0036] A second plug-in member is arranged on the side of the first plate member away from the energy storage module and is plugged with the second adapter;

[0037] A fire sprinkler is connected with the first plate member; the fire sprinkler penetrates the first plate member and extends into the energy storage cavity.

[0038] In some embodiments, the liquid cooling plate comprises an inlet joint and an outlet joint; the first plate member further has a sixth through hole and a seventh through hole, both of which pass through the first plate member along the third direction; the inlet joint is detachably penetrated in the sixth through hole, and the outlet joint is detachably penetrated in the seventh through hole.

[0039] In some embodiments, the first plate member and the second plate member are both transparent plates.

[0040] In some embodiments, the energy storage system comprises:

[0041] A plurality of thermal management plate members are arranged in the accommodating cavity along the first direction and are connected with the cabinet; the plurality of thermal management plate members divide the accommodating cavity into a plurality of energy storage cavities;

[0042] A plurality of energy storage modules are arranged in each energy storage cavity;

[0043] A plurality of protection assemblies are arranged in the accommodating cavity along the first direction and are connected with the cabinet; each protection assembly covers one energy storage cavity.

[0044] In some embodiments, the energy storage system further comprises a cabinet door arranged on the side of the protection assembly away from the energy storage module; the cabinet door is connected with the cabinet and is used for covering the accommodating cavity.

[0045] Beneficial Effects: Compared with the prior art, an energy storage system according to an embodiment of this application includes a cabinet, a thermal management board, an energy storage module, a protective component, and a circuit breaker. The cabinet has a receiving cavity, the thermal management board is disposed in the receiving cavity and connected to the cabinet, and the thermal management board divides the receiving cavity into at least one energy storage cavity; the energy storage module is disposed in the energy storage cavity and is detachably connected to the thermal management board; the protective component is detachably connected to the cabinet to cover the energy storage cavity; the circuit breaker is connected to the side of the protective component away from the energy storage module and is electrically connected to the energy storage module. This application, by setting the thermal management board to divide the receiving cavity of the cabinet into energy storage cavities, and directly placing the energy storage module in the energy storage cavity, while using the protective component to cover the energy storage cavity to form a closed space, allows the energy storage module to be directly integrated into the cabinet, forming an integrated design. This simplifies the battery pack housing and the corresponding colloid and other fixing structures inside the battery pack, effectively reducing the overall weight of the energy storage system, while improving space utilization and overall energy density. Furthermore, the simplified structure is conducive to improving energy transmission efficiency. In addition, the detachable connection between the thermal management board and the energy storage module, as well as the detachable connection between the protective components and the cabinet, facilitates the replacement of the energy storage module, effectively improves maintenance efficiency, and reduces maintenance and disassembly costs. Furthermore, this application utilizes the protective components to isolate the circuit breaker from the energy storage module and fix the circuit breaker, which facilitates the subsequent circuit layout on the outside of the energy storage cavity and promotes a unified layout. Attached Figure Description

[0046] 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 accompanying 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.

[0047] Figure 1 This is a schematic diagram of the overall structure of an energy storage system according to an embodiment of this application;

[0048] Figure 2 This is a schematic diagram of the connection between the thermal management panel and the cabinet in an energy storage system according to an embodiment of this application;

[0049] Figure 3 yes Figure 2 Enlarged view of section A;

[0050] Figure 4 This is an exploded view of a protective component and a cabinet that exploded according to an embodiment of this application;

[0051] Figure 5 This is a schematic diagram of the connection between an energy storage module and a thermal management board according to an embodiment of this application;

[0052] Figure 6is a whole structure schematic view of a protection assembly according to an embodiment of the present application.

[0053] Figure 7 is an exploded view of a protection assembly according to an embodiment of the present application.

[0054] Legend:

[0055] 100, cabinet body; 110, containing cavity; 111, energy storage cavity; 200, support assembly; 210, support plate; 211, fixed part; 212, bearing part; 300, thermal management plate; 310, liquid cooling plate; 311, liquid inlet connector; 312, liquid outlet connector; 320, limiting connection part; 321, fixing hole; 330, positioning space; 400, energy storage module; 410, battery pack; 411, battery cell; 420, end plate; 421, first through hole; 430, flexible fixing part; 440, locking part; 500, protection assembly; 510, first plate; 511, second through hole; 512, sixth through hole; 513, seventh through hole; 520, second plate; 521, third through hole; 522, fourth through hole; 523, fifth through hole; 600, circuit breaker; 700, fixing assembly; 710, fixing part; 800, first adapter; 810, second adapter; 820, first plug-in part; 830, second plug-in part; 840, fire sprinkler; 900, cabinet door; Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0057] In the description of the present application, it needs to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise explicitly specified. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical, for example, within an angle range of 80°-100°, it is considered as vertical, similarly, "parallel" means completely parallel or almost completely parallel, for example, within a range of 10° of complete parallel, it is considered as parallel.

[0058] It should be further pointed out that in the drawings of the present application, the arrow marked Z indicates the first direction Z, the arrow marked X indicates the second direction X, and the arrow marked X indicates the third direction Y. The first direction Z, the second direction X and the third direction Y are introduced to facilitate the description of the structural positional relationship of the energy storage system, and to facilitate understanding of the structure. In the embodiments of the present application, the first direction Z is the height direction of the energy storage system, the second direction X is the length direction of the energy storage system, and the third direction Y is the width direction of the energy storage system, which is also the direction of the arrangement of the plurality of battery monomers 411; and the first direction Z, the second direction X and the third direction Y intersect with each other, and further, the first direction Z, the second direction X and the third direction Y are perpendicular to each other.

[0059] In the related art, the liquid-cooled energy storage system is usually integrated with multiple battery packs from bottom to top in the cabinet, and then fixed in the cabinet by bolts and the like, wherein each battery pack has a box body, and multiple batteries, liquid cooling plates, high-low voltage distribution boxes and circuit breakers are integrated in the box body, and sealing glue needs to be injected to fix the batteries. This results in the need to remove the entire package when the battery is out of control, which is difficult to maintain in the later period and has high after-sales cost. At the same time, multiple devices need to be coordinated to assemble, integrate and disassemble during the integration and system maintenance of the entire cabinet, which is not convenient to disassemble and assemble, has high disassembly and assembly cost, and is difficult to maintain in the later period.

[0060] Therefore, the embodiments of the present application provide an energy storage system, which aims to solve at least one of the above problems.

[0061] Please refer toFigure 1 、 Figure 2 and Figure 4 The embodiment of the present application provides a kind of energy storage system, including cabinet 100, heat management board piece 300, energy storage module 400, protective assembly 500 and circuit breaker 600, cabinet 100 has accommodating cavity 110, heat management board piece 300 is set to accommodating cavity 110 and is connected with cabinet 100, heat management board piece 300 will accommodating cavity 110 be divided into at least one energy storage cavity 111;Energy storage module 400 is set to energy storage cavity 111, and is detachably connected with heat management board piece 300;Protective assembly 500 is detachably connected with cabinet 100, to cover and seal energy storage cavity 111;Circuit breaker 600 is connected to the side of protective assembly 500 away from energy storage module 400, and is conductively connected with energy storage module 400.

[0062] The present application is set by heat management board piece 300 in the accommodating cavity 110 of cabinet 100 separates out energy storage cavity 111, and directly sets energy storage module 400 in energy storage cavity 111, while using protective assembly 500 to cover and seal energy storage cavity 111 to form closed space, at this time, energy storage module 400 can be directly integrated into cabinet 100, form integrated design, simplify battery pack box and corresponding battery pack in the colloid and other fixed structure, effectively reduce the weight of energy storage system as a whole, while improving space utilization and overall energy density, while, simplify structure is conducive to the improvement of energy transmission efficiency.In addition, by heat management board piece 300 and energy storage module 400 detachably connected, and protective assembly 500 and cabinet 100 detachably connected, it is favorable to the replacement of energy storage module 400, can effectively improve maintenance efficiency, and reduce maintenance cost and disassembly cost;In addition, the present application uses protective assembly 500 to isolate circuit breaker 600 and energy storage module 400, and fixes circuit breaker 600, facilitate subsequent circuit layout on the outside of energy storage cavity 111, facilitate unified layout.

[0063] Specifically, the cabinet 100 has a containing cavity 110 for accommodating electrical components, conductive circuits, fire control pipelines and the like in the energy storage system. The heat management plate 300 is connected to the cabinet 100 and separates the energy storage cavity 111, which is an independent space enclosed by the heat management plate 300 and the cabinet 100. The energy storage cavity 111 is used to accommodate the energy storage module 400, which can replace the battery pack box and sealing components, thereby reducing the structural cost. Meanwhile, the heat management plate 300 is connected to the energy storage module 400 and the cabinet 100, and the heat management plate 300 is used for heat management and support of the energy storage module 400, thereby further simplifying the structure. In addition, the energy storage module 400 and the heat management plate 300 are detachably connected, which can facilitate the removal of the corresponding faulty energy storage module 400 when the energy storage module 400 fails. Since the energy storage module 400 is relatively light, the difficulty of removal and replacement can be effectively reduced. In addition, the protective assembly 500 can package the energy storage cavity 111 and support and fix the circuit breaker 600, which can prevent foreign matter from entering the energy storage cavity 111 and isolate the energy storage module 400 from the external environment, thereby preventing the staff from mistakenly touching the conductive copper bars around the energy storage module 400 after opening the cabinet door, thereby playing a protective role and ensuring that the energy storage system has strong safety while simplifying the structure.

[0064] Therefore, the protective assembly 500 of the present application is preferably an insulating plate. Further, the protective assembly 500 of the present application is preferably a transparent plate, which can realize the sealing and isolation of the energy storage cavity 111 and facilitate the observation of the internal condition of the energy storage cavity 111, thereby avoiding the thermal runaway of a certain energy storage module 400 and the dispersion of smoke in the energy storage cavity 111, and directly observing the specific position of the energy storage module 400 that fails, thereby directly replacing and processing the energy storage module 400.

[0065] Further, the protective assembly 500 is preferably made of high-strength transparent acrylic plate, which can further reduce the weight, ensure sufficient strength, and facilitate the observation of the internal condition of the energy storage cavity 111.

[0066] It should be noted that the heat management plate 300 is mainly used for heat management, such as refrigeration or heating, of the energy storage module 400, thereby ensuring that the energy storage module 400 is always in a better working environment.

[0067] It should be noted that the circuit breaker 600 is connected to the energy storage module 400 and can directly cut off the circuit when a certain battery monomer 411 in the energy storage module 400 fails, thereby protecting the safety of the energy storage system.

[0068] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments, the energy storage system further comprises a support assembly 200 arranged in the accommodating cavity 110 and connected with the cabinet 100, and the heat management plate 300 is connected with the support assembly 200; the support assembly 200 comprises a plurality of support plates 210, at least two support plates 210 are arranged opposite along the length direction, the support plate 210 comprises a fixed part 211 and a bearing part 212, the fixed part 211 extends along the first direction Z and is connected with the cabinet 100; the bearing part 212 extends along the second direction X and is connected with the fixed part 211, and the two ends of the heat management plate 300 along the second direction X are connected with the bearing parts 212 of the plurality of support plates 210 respectively; wherein the first direction Z intersects with the second direction X.

[0069] In the embodiments of the present application, the support assembly 200 is first connected with the cabinet 100, so that a support platform is formed in the solid, facilitating the installation of the heat management plate 300. The support and stability of the heat management plate 300 can be ensured. The support assembly 200 can have a plurality of support plates 210, which are arranged at intervals, and at least two support plates 210 are arranged opposite along the length direction, so that the support assembly 200 supports and positions the heat management plate 300 at least at two points along the length direction. Further, the plurality of support plates 210 are preferably an even number, and are arranged opposite by two along the length direction, forming a plurality of positioning support points, and effectively supporting and fixing the heat management plate 300.

[0070] It should be noted that the fixed part 211 is used to connect with the cabinet 100, and the bearing part 212 is used to provide a support plane. The bearing part 212 has a certain length and width, which can provide a larger support plane, on the one hand to provide better support effect, and on the other hand to absorb the size error between the heat management plate 300 and the accommodating cavity 110 inside the cabinet 100, which can be applied to heat management plates 300 of more sizes, thereby improving the versatility, so that different specifications of heat management plates 300 can be set according to the requirements.

[0071] It should be further noted that the heat management plate 300 and the support assembly 200 of the embodiments of the present application can be detachably connected, which can further improve the applicability, and the heat management plate 300 can be replaced in time when the heat management plate 300 fails.

[0072] Please refer to Figure 2 、 Figure 3 and Figure 5In some embodiments, the thermal management plate 300 comprises a liquid cooling plate 310 and a plurality of limiting connecting portions 320. The liquid cooling plate 310 is arranged on one side of the bearing portion 212 along the first direction Z and connected with the bearing portion 212. The plurality of limiting connecting portions 320 are connected to the side of the liquid cooling plate 310 away from the bearing portion 212. At least two limiting connecting portions 320 are arranged along the third direction Y. The limiting connecting portion 320 and the liquid cooling plate 310 form a positioning space 330. The energy storage module 400 is arranged in the positioning space 330 and detachably connected with the limiting connecting portion 320. The third direction Y intersects with the first direction Z and the second direction X.

[0073] In the embodiments of the present application, the liquid cooling plate 310 is used to circulate the contact cooling liquid, and the liquid cooling plate 310 is used to contact and exchange heat with the energy storage module 400, so as to accurately control the temperature of the energy storage module 400. Preferably, the edge of the liquid cooling plate 310 is not provided with a liquid cooling flow channel, which is equivalent to arranging a mounting area at the edge of the liquid cooling plate 310, so as to facilitate the fixed connection of the liquid cooling plate 310 and the bearing portion 212. The plurality of limiting connecting portions 320 are connected with the liquid cooling plate 310 to form the positioning space 330, so as to facilitate the positioning and limiting of the energy storage module 400 after being mounted into the energy storage cavity 111, reduce the possibility of movement of the energy storage module 400 in the energy storage cavity 111, and thus improve the safety. At least two limiting connecting portions 320 are arranged along the third direction Y. Part of the energy storage module 400 is arranged between the adjacent two limiting connecting portions 320 along the third direction Y, which facilitates the limiting and positioning of the energy storage module 400 along the third direction Y, and avoids the ineffective fixation caused by over installation. The limiting connecting portion 320 is connected with the energy storage module 400, which facilitates the further fixation of the energy storage module 400.

[0074] It should be noted that the energy storage module 400 is detachably connected with the limiting connecting portion 320, which can realize timely disassembly and maintenance when the energy storage module 400 fails.

[0075] It should be noted that the surface of the liquid cooling plate 310 in contact with the energy storage module 400 is a plane, so as to ensure that the liquid cooling plate 310 and the energy storage module 400 have a large contact area and ensure the heat exchange effect.

[0076] It should be further noted that the side of the liquid cooling plate 310 away from the energy storage module 400 can be sprayed with polyurethane, so as to prevent the condensed water of the liquid cooling plate 310 from falling onto the energy storage module 400 below, and thus ensure the safety of the energy storage system.

[0077] Please refer to Figure 5In some embodiments, the energy storage module 400 includes at least one battery pack 410, a plurality of end plates 420, a flexible fixing member 430, and a plurality of locking members 440. Each battery pack 410 includes a plurality of battery cells 411 arranged along a third direction Y. The battery pack 410 is arranged in the positioning space 330 and is attached to the liquid cooling plate 310. Two end plates 420 of the plurality of end plates 420 are arranged on opposite sides of one battery pack 410 along the third direction Y and are connected to the battery pack 410. The end plate 420 has a plurality of first through holes 421 that penetrate the end plate 420 along a first direction Z. The flexible fixing member 430 is arranged around the outer circumferential side of the end plate 420 and the battery pack 410 and is connected to the battery pack 410 and the end plate 420. Each locking member 440 is detachably arranged in one first through hole 421. The limiting connecting part 320 has a plurality of fixing holes 321, and the opening of the fixing hole 321 faces the first through hole 421. Each locking member 440 is detachably arranged in one fixing hole 321, so that the end plate 420, the limiting connecting part 320, and the locking member 440 are detachably connected.

[0078] In the embodiments of the present application, by arranging a plurality of battery cells 411 into a group, and clamping the end plate 420 to the battery pack 410 and locking and fixing it with the flexible fixing member 430, and then adding corresponding electrical isolation components, busbars, and conductive copper bars, etc., an energy storage module 400 can be formed. This energy storage module 400 is directly loaded on the thermal management plate 300, which can effectively simplify the module structure, thereby reducing the structural cost and weight, while saving the space occupied by the energy storage cavity 111, which is conducive to improving the volume energy density of the energy storage system. Correspondingly, the energy storage capacity of the energy storage system can be increased, or the volume of the energy storage system can be reduced. At the same time, the locking member 440 can be used to directly connect the end plate 420 to the limiting connecting part 320, which can realize the fixation of the entire energy storage module 400.

[0079] It should be noted that the at least one battery pack 410 of the embodiments of the present application can be one or more, and the plurality can be two or more. When the battery pack 410 is a plurality, the plurality of battery packs 410 can be arranged along the second direction X. At this time, the end plate 420 is arranged on both ends of each battery pack 410 along the third direction Y to clamp and fix it, and the first through hole 421 is provided by the end plate 420 at both ends. This is conducive to the locking member 440 passing through the first through hole 421 into the fixing hole 321 on the limiting connecting part 320, thereby realizing the connection and fixation of the energy storage module 400 and the thermal management plate 300.

[0080] The plurality of battery groups 410 and the plurality of end plates 420 are also wrapped and tightly fixed by the flexible fixing members 430. The flexible fixing members 430 can be steel bands, have strong structural strength, and can be bent and deformed. The flexible fixing members 430 can be one or more, and when there are multiple flexible fixing members 430, the multiple flexible fixing members 430 can be arranged at intervals along the first direction Z, so as to realize multi-point fixing and ensure the structural stability of the energy storage module 400.

[0081] The plurality of end plates 420 can be two or more, and the number of end plates 420 is even, so as to facilitate the fixation and protection of both ends of the battery group 410 along the third direction Y. The first through holes 421 and the locking members 440 on the end plates 420 correspond to two or more, which can ensure the stability of the fixed connection.

[0082] It should be noted that the locking member 440 and the limiting connection part 320 are detachably connected and fixed, so as to realize the detachable connection of the energy storage module 400 and the heat management plate 300, and facilitate the timely disassembly and replacement of the energy storage module 400 when it fails.

[0083] It should be further noted that one or more energy storage modules 400 can be arranged in one energy storage cavity 111, and when there are multiple energy storage modules 400, adjacent two energy storage modules 400 can be connected in series by copper bars.

[0084] In some embodiments, the energy storage system includes a fixing assembly 700, which is arranged in the energy storage cavity 111 and connected with the cabinet 100. The fixing assembly 700 includes a plurality of fixing members 710, and at least two fixing members 710 are arranged at intervals along the second direction X. The protection assembly 500 is connected with the plurality of fixing members 710 and covers the energy storage cavity 111.

[0085] In the embodiments of the present application, the fixing assembly 700 is used to realize the fixed connection of the protection assembly 500 and the solid. The fixing assembly 700 includes a plurality of fixing assemblies 700, and preferably the fixing assembly 700 includes an even number of fixing members 710, and two fixing members 710 are arranged opposite to each other on both sides of the energy storage space, so as to realize the multi-point fixing of the protection assembly 500 and improve the structural stability.

[0086] It should be noted that the fixing member 710 and the protection assembly 500 can be detachably connected, so as to facilitate the timely removal of the protection assembly 500 when the energy storage module 400 in the energy storage cavity 111 fails, and the disassembly and replacement of the energy storage module 400.

[0087] In some embodiments, the protection assembly 500 comprises a first plate 510 and a second plate 520, the first plate 510 is connected with the cabinet 100 and covers the energy storage cavity 111; the first plate 510 has a second through hole 511 penetrating the first plate 510 along the third direction Y; the second plate 520 is detachably connected to the side of the first plate 510 close to the energy storage module 400 and covers the second through hole 511; the second plate 520 has a third through hole 521 penetrating the second plate 520 along the third direction Y; the circuit breaker 600 is connected to the side of the second plate 520 away from the energy storage module 400 and partially penetrates the third through hole 521.

[0088] In the embodiments of the present application, since the circuit breaker 600 is conductively connected with the energy storage module 400, by setting the first plate 510 and the second plate 520 which are detachably connected, when it is needed to open the energy storage cavity 111, the second plate 520 can be first detached from the first plate 510, and then the first plate 510 is detached from the cabinet 100, at this time, the opening of the energy storage cavity 111 can be realized, and at the same time, the connection relationship between the energy storage module 400 and the circuit breaker 600 can be avoided from being damaged.

[0089] It should be noted that, by setting the third through hole 521 on the second plate 520, the circuit breaker 600 can be set on the side of the second plate 520 away from the energy storage module 400, and the conductive circuit can pass through the third through hole 521 and be conductively connected with the energy storage module 400 and the circuit breaker 600 respectively; by setting the second through hole 511 on the first plate 510, the circuit breaker 600 can pass through and be exposed on the side of the first plate 510 away from the energy storage module 400, so as to be conductively connected with the external circuit.

[0090] It should be noted that, the area of the second plate 520 is greater than the area of the second through hole 511, so as to realize the plugging of the second through hole 511. The second plate 520 is located on the side of the first plate 510 close to the energy storage module 400, so as to facilitate the disconnection of the first plate 510 and the second plate 520, and the second plate 520 will not interfere with the removal of the first plate 510.

[0091] Please refer to Figure 1 and Figure 6In some embodiments, the second plate member 520 further has a fourth through hole 522 and a fifth through hole 523, both of which pass through the second plate member 520 along the third direction Y; the energy storage system further comprises a first adapter 800, a second adapter 810, a first plug 820, a second plug 830, and a fire sprinkler 840, the first adapter 800 is connected to the side of the second plate member 520 away from the energy storage module 400 and partially penetrates the fourth through hole 522; the first adapter 800 is in conductive connection with the energy storage module 400; the second adapter 810 is connected to the side of the second plate member 520 away from the energy storage module 400 and partially penetrates the fifth through hole 523; the second adapter 810 is in conductive connection with the energy storage module 400; the first plug 820 is arranged on the side of the first plate member 510 away from the energy storage module 400 and is plugged with the first adapter 800; the second plug 830 is arranged on the side of the first plate member 510 away from the energy storage module 400 and is plugged with the second adapter 810; the fire sprinkler 840 is connected with the first plate member 510; the fire sprinkler 840 penetrates the first plate member 510 and extends into the energy storage cavity 111.

[0092] In the embodiments of the present application, the first adapter 800 and the second adapter 810 are correspondingly plugged and fixed in the fourth through hole 522 and the fifth through hole 523 on the second plate member 520, so that the conductive connection of the first adapter 800 and the second adapter 810 with the energy storage module 400 can be facilitated. The first plug 820 is plugged with the first adapter 800, and the second plug 830 is plugged with the second adapter 810, so that the input and output of the energy storage module 400 can be realized. The fire sprinkler 840 is arranged on the first plate member 510, the fire sprinkler 840 is connected with the external fire pipe, and the fire sprinkler 840 can spray and extinguish fire in time when the energy storage module 400 in the energy storage cavity 111 is in thermal runaway. The fire sprinkler 840 is arranged on the first plate member 510, so that the fire sprinkler 840 can be removed when the first plate member 510 is removed, and the interference of the fire pipe on the disassembly of the first plate member 510 can be avoided.

[0093] The first adapter 800 can be a positive electrode plug, the first plug 820 can be a positive electrode plug, the second adapter 810 can be a negative electrode plug, and the second plug 830 can be a negative electrode plug.

[0094] Please refer to Figure 5 In some embodiments, the liquid cooling plate 310 comprises a liquid inlet connector 311 and a liquid outlet connector 312; the first plate member 510 further has a sixth through hole 512 and a seventh through hole 513, both of which pass through the first plate member 510 along the third direction Y; the liquid inlet connector 311 is detachably penetrated in the sixth through hole 512, and the liquid outlet connector 312 is detachably penetrated in the seventh through hole 513.

[0095] In the embodiments of the present application, the liquid inlet connector 311 and the liquid outlet connector 312 are arranged at the edge of the liquid cooling plate 310, so that the circulation of the cooling liquid of the liquid cooling plate 310 can be conveniently realized, and the disassembly of the energy storage module 400 is avoided. The sixth through hole 512 and the seventh through hole 513 are arranged on the first plate member 510 to pass through the liquid inlet connector 311 and the liquid outlet connector 312 respectively. At this time, the liquid inlet connector 311 and the liquid outlet connector 312 can be aligned and positioned when the first plate member 510 is assembled, and disassembly interference is also avoided.

[0096] It should be noted that the external circulation pipeline of the liquid cooling plate 310 is removed before the first plate member 510 is removed. When the first plate member 510 is installed, the first plate member 510 is first connected and installed, and then the external circulation pipeline is connected with the liquid inlet connector 311 and the liquid outlet connector 312.

[0097] In some embodiments, the first plate member 510 and the second plate member 520 are both transparent plates.

[0098] In the embodiments of the present application, the first plate member 510 and the second plate member 520 are transparent plates, preferably high-strength acrylic plates, which are convenient for observing the internal condition of the energy storage cavity 111 and have light weight. The first plate member 510 and the second plate member 520 can be detachably locked and fixed by screws.

[0099] Please refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the energy storage system includes a plurality of heat management plates 300, a plurality of energy storage modules 400, and a plurality of protection assemblies 500. The plurality of heat management plates 300 are arranged in the first direction Z and are connected with the cabinet 100. The plurality of heat management plates 300 divide the accommodation cavity 110 into a plurality of energy storage cavities 111. At least one energy storage module 400 is arranged in each energy storage cavity 111. The plurality of protection assemblies 500 are arranged in the first direction Z and are connected with the cabinet 100. Each protection assembly 500 covers one energy storage cavity 111.

[0100] The present application can arrange a plurality of heat management plates 300 in the height direction to divide the plurality of energy storage cavities 111, so that the energy storage system can include a plurality of energy storage modules 400, thereby realizing a large energy storage capacity of the energy storage system. At the same time, the plurality of energy storage modules 400 are arranged in different energy storage cavities 111, so that separate management is realized, and the influence on other energy storage modules in the energy storage cavities 111 can be reduced when a fault occurs in a module.

[0101] Meanwhile, multiple supporting assemblies 200 can be arranged in the corresponding energy storage cavities 111 and connected with the cabinet 100 to fix the multiple protective assemblies 500, so as to facilitate the connection and disassembly of the protective assemblies 500 and the cabinet 100.

[0102] Please refer to Figure 1 and Figure 2 In some embodiments, the energy storage system further comprises a cabinet door arranged on the side of the protective assembly 500 away from the energy storage module 400, and the cabinet door is connected with the cabinet 100 to cover the accommodation cavity 110.

[0103] In the embodiments of the present application, by arranging the cabinet door on the side of the protective assembly 500 away from the energy storage module 400 and connecting the cabinet door with the cabinet 100 to cover the accommodation cavity 110, the safety can be further improved, the protective assembly 500 and the cabinet door are arranged on the outside of the energy storage cavity 111 to realize two-layer protection, the stability of the overall structure is ensured, and the safety factor is improved.

[0104] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0105] The energy storage system provided by the embodiments of the present application is described in detail above, and the principle and implementation manner of the present application are described by applying specific examples. The above embodiment description is only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

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2. The energy storage system of claim 1, wherein, The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system.

3. The energy storage system of claim 2, wherein, The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system.

4. The energy storage system of claim 3, wherein, The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. The application relates to a storage energy system. 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The application relates to a a plurality of end plates (420), two of which are oppositely arranged along the third direction (Y) on two sides of one of the battery packs (410) and connected with the battery pack (410); the end plate (420) has a plurality of first through holes (421) penetrating the end plate (420) along the first direction (Z); a flexible fixing member (430) arranged around the outer circumferential side of the end plate (420) and the battery pack (410) and connected with the battery pack (410) and the end plate (420); a plurality of locking members (440), each of which is detachably arranged in one of the first through holes (421); the limiting connecting part (320) has a plurality of fixing holes (321) with openings facing the first through holes (421), and each of the locking members (440) is detachably arranged in one of the fixing holes (321), so that the end plate (420), the limiting connecting part (320) and the locking member (440) are detachably connected.

5. The energy storage system of claim 1, wherein, The energy storage system comprises a fixed assembly (700) arranged in the energy storage cavity (111) and connected with the cabinet (100); The fixed assembly (700) comprises a plurality of fixing members (710), at least two of which are arranged at intervals along the second direction (X), and the protection assembly (500) is connected with a plurality of the fixing members (710) and covers the energy storage cavity (111).

6. The energy storage system of claim 3, wherein, The protection assembly (500) comprises: a first plate member (510) connected with the cabinet (100) and covering the energy storage cavity (111); the first plate member (510) has a second through hole (511) penetrating the first plate member (510) along the third direction (Y); a second plate member (520) detachably connected to one side of the first plate member (510) close to the energy storage module (400) and covering the second through hole (511); the second plate member (520) has a third through hole (521) penetrating the second plate member (520) along the third direction (Y); the circuit breaker (600) is connected to one side of the second plate member (520) away from the energy storage module (400) and partially arranged in the third through hole (521).

7. The energy storage system according to claim 6, wherein the second plate member (520) further has a fourth through hole (522) and a fifth through hole (523), both of which penetrate the second plate member (520) along the third direction (Y); the energy storage system further comprises: A first adapter (800) is connected to the side of the second plate member (520) away from the energy storage module (400) and partially penetrates the fourth through hole (522); the first adapter (800) is in conductive connection with the energy storage module (400); A second adapter (810) is connected to the side of the second plate member (520) away from the energy storage module (400) and partially penetrates the fifth through hole (523); the second adapter (810) is in conductive connection with the energy storage module (400); A first plug-in component (820) is arranged on the side of the first plate member (510) away from the energy storage module (400) and is plugged with the first adapter (800); A second plug-in component (830) is arranged on the side of the first plate member (510) away from the energy storage module (400) and is plugged with the second adapter (810); A fire sprinkler (840) is connected with the first plate member (510); the fire sprinkler (840) penetrates the first plate member (510) and extends into the energy storage cavity (111).

8. The energy storage system according to claim 6, wherein, The liquid cooling plate (310) comprises an inlet connector (311) and an outlet connector (312); The first plate member (510) further comprises a sixth through hole (512) and a seventh through hole (513), both of which penetrate the first plate member (510) along the third direction (Y); the inlet connector (311) is detachably penetrated in the sixth through hole (512), and the outlet connector (312) is detachably penetrated in the seventh through hole (513).

9. The energy storage system of claim 6, wherein, Both the first plate member (510) and the second plate member (520) are transparent plates.

10. The energy storage system of claim 2, wherein, The energy storage system comprises: A plurality of thermal management plate members (300) are arranged in the accommodating cavity (110) along the first direction (Z) and are connected with the cabinet (100); the plurality of thermal management plate members (300) divide the accommodating cavity (110) into a plurality of energy storage cavities (111); A plurality of energy storage modules (400) are arranged in each energy storage cavity (111); A plurality of protection assemblies (500) are arranged in the accommodating cavity (110) along the first direction (Z) and are connected with the cabinet (100); each protection assembly (500) covers one energy storage cavity (111).

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