Immersed energy storage device

Abstract

The utility model relates to the technical field of energy storage, in particular to an immersed energy storage device. The immersed energy storage device comprises a battery cabin and a low-pressure cabin which are mutually independent, a BMS is contained in the low-pressure cabin, the battery cabin comprises a battery cabin body and a supporting structure, the battery cabin body is provided with a containing cavity for containing immersion liquid, a battery module is contained in the containing cavity, the supporting structure is detachably fixed to the cavity wall of the containing cavity, and the battery module is arranged in the containing cavity. The supporting structure is provided with a wiring cavity extending in the preset direction, the wiring cavity is isolated from the containing cavity, one end of the low-voltage wire harness is connected with the battery module, the other end of the low-voltage wire harness extends into the wiring cavity for wiring and is connected with the BMS in the low-pressure cabin, information collection of the BMS on the battery module is achieved, loosening of the low-voltage wire harness and the battery module can be prevented, and the service life of the battery module is prolonged. And the protection on the low-voltage wire harness can be improved. In addition, the BMS is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to an immersion energy storage device. Background Art

[0002] The energy storage cabinet is equipped with multiple battery modules and BMS (Battery Management System). Multiple battery modules realize the charge and discharge cycle through high-voltage circuit harnesses. BMS is connected to multiple battery modules at the same time through low-voltage harnesses. BMS collects information such as temperature and voltage of the battery modules.

[0003] In the related art, the immersed CTS (Cell to System) energy storage cabinet directly places the battery module and BMS into the battery compartment, and outputs electrical energy to the outside through the series and parallel connection of the battery module. However, since the battery compartment of the immersed energy storage cabinet is full of immersion fluid, once the BMS has a problem and needs to be replaced, it is necessary to reopen the battery compartment and extract the immersion fluid before it can be replaced. This not only increases the cost of inspection and maintenance, but also may cause the sealing performance of the battery compartment to deteriorate during the inspection process, thereby causing the risk of immersion fluid leakage. In addition, since the immersion fluid is constantly circulating in the battery compartment, the low-voltage wiring harness used to connect the battery module and the BMS is prone to shaking in the immersion fluid. The shaking of the low-voltage wiring harness will not only cause it to loosen from the battery module and the BMS, affecting the normal operation of the BMS, but also cause wear on the surface of the low-voltage wiring harness, making the low-voltage wiring harness scrapped.

[0004] Therefore, there is an urgent need to invent an immersion energy storage device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an immersion energy storage device to realize the partitioned storage of battery modules and BMS slave mold shells, facilitate the inspection and maintenance of the BMS, and also ensure the stable connection between the battery module and the BMS.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An immersed energy storage device, including a battery compartment and a low-pressure compartment that are independent of each other;

[0008] The low-pressure cabin contains a BMS, the battery cabin includes a battery cabin body and a supporting structure, the battery cabin body has a receiving cavity for receiving an immersion liquid, and the battery module is received in the receiving cavity;

[0009] The supporting structure can be detachably fixed on the cavity wall of the accommodating cavity, and the supporting structure has a wiring cavity extending along a preset direction, the wiring cavity and the accommodating cavity are isolated from each other, one end of the low-voltage wiring harness is connected to the battery module, and the other end of the low-voltage wiring harness extends into the wiring cavity for wiring and is connected to the BMS in the low-pressure cabin.

[0010] As an optional solution, the support structure includes:

[0011] a first support member;

[0012] The second support member, the first support member and the second support member both extend along the preset direction, the first support member and the second support member are interlocked with each other and together form the wiring cavity, and the first support member and / or the second support member can be detachably fixed to the cavity wall of the accommodating cavity.

[0013] As an optional solution, the support structure further includes:

[0014] A blocking member, wherein the first supporting member and / or the second supporting member is provided with a through hole, and the blocking member blocks the through hole;

[0015] The blocking piece has a signal transmission function. The low-voltage wiring harness is split into two sections. One section of the low-voltage wiring harness is arranged in the accommodating cavity and connected to the low-voltage port of the battery module, and the other section of the low-voltage wiring harness is routed in the routing cavity and connected to the BMS. The blocking piece is configured to connect the two sections of the low-voltage wiring harness.

[0016] As an optional solution, the support structure is directly opposite to the low-voltage port of the battery module.

[0017] As an optional solution, the support structure further includes:

[0018] A wiring buckle is arranged in the wiring cavity, and the wiring buckle can fix the low-voltage wiring harness in the wiring cavity along the extension direction of the wiring cavity.

[0019] As an optional scheme, at least two routing buckles are arranged in the supporting structure, and at least two routing buckles are arranged in the routing cavity at intervals along the extension direction of the routing cavity. At least two routing buckles jointly fix the low-voltage wiring harness in the routing cavity along the extension direction of the routing cavity.

[0020] As an optional solution, the first support member is provided with a fixing portion at least at one end thereof along its extension direction, and the battery compartment further comprises a fixing member, and the fixing member can detachably fix the fixing portion to the cavity wall of the battery compartment body;

[0021] And / or, the fixing portion is provided at at least one end of the second supporting member along its extension direction, and the fixing member can detachably fix the fixing portion to the cavity wall of the battery compartment body.

[0022] As an optional solution, the extension direction of the wiring cavity is perpendicular to the extension direction of the high-voltage circuit harness on the battery module.

[0023] As an optional solution, the submerged energy storage device further includes:

[0024] A high-pressure cabin is independent of the battery cabin and the low-pressure cabin. A charging and discharging docking device is installed in the high-pressure cabin. The charging and discharging docking device is connected to the high-voltage circuit harness of the battery module.

[0025] As an optional solution, the submerged energy storage device further includes:

[0026] A cooling chamber, wherein the cooling chamber is independent of the battery chamber and the low-pressure chamber, and a circulating cooling device is arranged in the cooling chamber, wherein the circulating cooling device is configured to circulate and cool the immersion liquid.

[0027] Beneficial effects of the utility model:

[0028] The submerged energy storage device provided by the utility model accommodates the BMS in the low-pressure cabin by providing a battery cabin and a low-pressure cabin which are independent of each other, and accommodates the battery module and the immersion liquid in the accommodating cavity of the battery cabin body in the battery cabin; by detachably fixing the supporting structure on the cavity wall of the accommodating cavity, the supporting effect of the supporting structure on the cavity wall of the accommodating cavity in the battery cabin body can be utilized to effectively improve the structural strength of the battery cabin body; by providing a wiring cavity extending along a preset direction in the supporting structure, one end of the low-voltage wiring harness is connected to the battery module, and the other end of the low-voltage wiring harness is extended into the wiring cavity for wiring and connected to the BMS in the low-pressure cabin, thereby realizing the BMS to collect information on the battery module; and since the wiring cavity and the accommodating cavity are isolated from each other, the shaking of the low-voltage wiring harness in the accommodating cavity can be reduced, which can not only prevent the low-voltage wiring harness from loosening the battery module and ensure the detection stability of the battery module by the BMS, but also improve the protection of the low-voltage wiring harness. In addition, since the battery compartment and the low-pressure compartment are independent of each other, when the BMS needs to be replaced, the low-pressure compartment can be directly opened and the BMS can be replaced. This is easy to operate and solves the problem of immersion fluid leakage when replacing the BMS from the battery compartment in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an immersion energy storage device provided by an embodiment of the utility model;

[0030] Figure 2 This is one of the structural schematic diagrams of the battery compartment provided by the embodiment of the utility model;

[0031] Figure 3 This is the second structural schematic diagram of the battery compartment provided by the embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of a second supporting member, a blocking member and a wiring buckle provided in an embodiment of the utility model;

[0033] Figure 5 It is a cross-sectional schematic diagram of a support structure provided by an embodiment of the utility model;

[0034] Figure 6 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0035] In the figure:

[0036] 1000. Immersed energy storage device;

[0037] 100, battery compartment; 110, supporting structure; 111, first supporting member; 1111, fixing portion; 112, second supporting member; 1121, through hole; 113, blocking member; 114, wiring buckle; 115, wiring cavity; 120, battery compartment body; 121, accommodating cavity; 130, fixing member;

[0038] 200. Low-pressure cabin;

[0039] 300. Hyperbaric chamber;

[0040] 400. Cooling cabin;

[0041] 2000, battery module; 2100, low voltage port;

[0042] 3000, immersion liquid;

[0043] 4000, low voltage wiring harness. DETAILED DESCRIPTION

[0044] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0045] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0048] In the related art, the immersed CTS (Cell to System) energy storage cabinet directly places the battery module and BMS into the battery compartment, and outputs electrical energy to the outside through the series and parallel connection of the battery module. However, since the battery compartment of the immersed energy storage cabinet is full of immersion fluid, once the BMS has a problem and needs to be replaced, it is necessary to reopen the battery compartment and extract the immersion fluid before it can be replaced. This not only increases the cost of inspection and maintenance, but also may cause the sealing performance of the battery compartment to deteriorate during the inspection process, thereby causing the risk of immersion fluid leakage. In addition, since the immersion fluid is constantly circulating in the battery compartment, the low-voltage wiring harness used to connect the battery module and the BMS is prone to shaking in the immersion fluid. The shaking of the low-voltage wiring harness will not only cause it to loosen from the battery module and the BMS, affecting the normal operation of the BMS, but also cause wear on the surface of the low-voltage wiring harness, making the low-voltage wiring harness scrapped.

[0049] In order to solve the above problems, Figure 1 to Figure 4As shown, this embodiment provides an immersion energy storage device 1000. The immersion energy storage device 1000 includes a battery compartment 100 and a low-pressure compartment 200 which are independent of each other, wherein a BMS is placed in the low-pressure compartment 200, the battery compartment 100 includes a battery compartment body 120 and a support structure 110, the battery compartment body 120 has a receiving cavity 121 for receiving an immersion liquid 3000, the battery module 2000 is accommodated in the receiving cavity 121, the support structure 110 is detachably fixed on the cavity wall of the receiving cavity 121, the support structure 110 has a wiring cavity 115 extending in a preset direction, the wiring cavity 115 is isolated from the receiving cavity 121, one end of the low-voltage wiring harness 4000 is connected to the battery module 2000, and the other end of the low-voltage wiring harness 4000 extends into the wiring cavity 115 for wiring and is connected to the BMS in the low-pressure compartment 200.

[0050] The submerged energy storage device 1000 is provided with a battery compartment 100 and a low-pressure compartment 200 which are independent of each other, and the BMS is accommodated in the low-pressure compartment 200, and the battery module 2000 and the immersion liquid 3000 are accommodated in the accommodating cavity 121 of the battery compartment body 120 in the battery compartment 100. By detachably fixing the support structure 110 on the cavity wall of the accommodating cavity 121, the support effect of the support structure 110 on the cavity wall of the accommodating cavity 121 in the battery compartment body 120 can be utilized to effectively improve the structural strength of the battery compartment body 120, and by providing a wiring cavity 110 extending along a preset direction in the support structure 110, the wiring cavity 110 extending along a preset direction can be effectively improved. 15, one end of the low-voltage harness 4000 is connected to the battery module 2000, and the other end of the low-voltage harness 4000 is extended into the wiring cavity 115 for wiring and connected to the BMS in the low-pressure compartment 200, so that the BMS collects information about the battery module 2000, and because the wiring cavity 115 and the accommodating cavity 121 are isolated from each other, the shaking of the low-voltage harness 4000 in the accommodating cavity 121 can be reduced, which can not only prevent the low-voltage harness 4000 from loosening from the battery module 2000, ensure the detection stability of the battery module 2000 by the BMS, but also improve the protection of the low-voltage harness 4000. In addition, since the battery compartment 100 and the low-pressure compartment 200 are independent of each other, when the BMS needs to be replaced, the low-pressure compartment 200 can be directly opened and the BMS can be replaced, which is convenient to operate and solves the leakage problem of the immersion liquid 3000 when replacing the BMS from the battery compartment 100 in the prior art.

[0051] As an optional solution, the extension direction of the routing cavity 115 is perpendicular to the extension direction of the high-voltage circuit harness on the battery module 2000. By ensuring that the extension direction of the routing cavity 115 is perpendicular to the extension direction of the high-voltage circuit display on the battery module 2000, it is possible to effectively avoid electromagnetic interference to the low-voltage harness 4000 in the routing cavity 115 when the high-voltage circuit harness transmits strong current, and ensure the accuracy of the low-voltage harness 4000 transmitting information such as the voltage, current, and temperature of the battery module 2000 to the BMS. In addition, the extension direction of the routing cavity 115 is perpendicular to the extension direction of the high-voltage circuit harness on the battery module 2000, which not only facilitates the management of the low-voltage harness 4000 and the high-voltage harness, but also improves the aesthetics and neatness of the accommodating cavity 121.

[0052] It should be noted that, in this embodiment, Figure 1 to Figure 3 As shown, the support structure 110 extends in the left-right direction, the wiring cavity 115 in the support structure 110 extends in the left-right direction, the low-voltage wire harness 4000 in the wiring cavity 115 is arranged in the left-right direction, and the high-voltage circuit harness extends in the up-down direction to avoid electromagnetic interference of the high-voltage circuit harness on the low-voltage wire harness 4000. In other embodiments, the support structure 110 and the wiring cavity 115 therein may also extend in other directions according to actual needs, and it is only necessary to ensure that the extension direction of the support structure 110 and the wiring cavity 115 therein is perpendicular to the extension direction of the high-voltage circuit harness, which is not specifically limited in this embodiment.

[0053] As an optional solution, the submerged energy storage device 1000 further includes a high-pressure cabin 300, wherein the high-pressure cabin 300 is independent of the battery cabin 100 and the low-pressure cabin 200, and a charging and discharging docking device is placed in the high-pressure cabin 300, and the charging and discharging docking device is connected to the high-voltage circuit harness of the battery module 2000. By arranging a high-pressure cabin 300 that is independent of the battery cabin 100 and the low-pressure cabin 200 in the submerged energy storage device 1000, and accommodating the charging and discharging docking device connected to the high-voltage circuit harness in the high-pressure cabin 300, it is possible to facilitate the disassembly and assembly of the charging and discharging docking device, thereby improving the efficiency of subsequent inspection and maintenance.

[0054] In order to further ensure the immersion effect of the immersion liquid 3000 on the battery module 2000, the immersion energy storage device 1000 also includes a cooling cabin 400, wherein the cooling cabin 400 is independent of the battery cabin 100, the low-pressure cabin 200 and the high-pressure cabin 300, and the cooling cabin 400 contains a circulating cooling device, which is configured to circulate and cool the immersion liquid 3000. When the circulating cooling device needs to be replaced or repaired, the cooling cabin 400 can be opened to replace or repair the circulating cooling device, improve efficiency, ensure the circulating cooling effect of the circulating cooling device on the immersion liquid 3000, and further ensure the immersion effect of the immersion liquid 3000 on the battery module 2000.

[0055] Combination Figure 3 to Figure 6 The specific structure of the support structure 110 is described. The support structure 110 includes a first support member 111 and a second support member 112, wherein the first support member 111 and the second support member 112 both extend in the left-right direction, the first support member 111 and the second support member 112 are interlocked with each other and together form a wiring cavity 115, and the first support member 111 can be detachably fixed on the cavity wall of the accommodating cavity 121. By configuring the support structure 110 to be a first support member 111 and a second support member 112 extending in the left-right direction and interlocking with each other, the first support member 111 and the second support member 112 together enclose a wiring cavity 115 extending in the left-right direction, the structure is simple and the design is ingenious. By making the first support member 111 detachably fixed to the cavity wall of the accommodating cavity 121, when the first support member 111 and the second support member 112 are interlocked, the detachable fixation of the first support member 111 to the cavity wall of the accommodating cavity 121 can be used to achieve the effect of detachable fixation of the support structure 110 to the cavity wall of the accommodating cavity 121. It should be noted that in other embodiments, the second support member 112 can also be detachably fixed to the cavity wall of the accommodating cavity 121, or the first support member 111 and the second support member 112 can be detachably fixed to the cavity wall of the accommodating cavity 121 respectively, which is not specifically limited in this embodiment.

[0056] Specifically, if Figure 5 As shown, in this embodiment, the first support member 111 and the second support member 112 are both sheet metal beams. And the cross-section of the sheet metal beam is L-shaped. When the first support member 111 and the second support member 112 are interlocked with each other, the first support member 111 and the second support member 112 can jointly enclose a wiring cavity 115 with a rectangular cross-section. The first support member 111 and the second support member 112 are made of sheet metal beams, the high strength characteristics of the sheet metal beams are used to improve the structural strength of the accommodating cavity 121, and the bending shape of the sheet metal beams is used to enclose the wiring cavity 115, which has a simple structure and a clever design. It should be noted that the interlocking fixation between the first support member 111 and the second support member 112 can be fixed by welding, bonding or riveting, etc., which is not specifically limited in this embodiment.

[0057] like Figure 3 and Figure 6 As shown, the first support member 111 is provided with a fixing portion 1111 at least at one end along the left and right direction, and the battery compartment 100 further includes a fixing member 130 , which can detachably fix the fixing portion 1111 to the cavity wall of the battery compartment body 120 .

[0058] Specifically, a through hole is provided on the fixing portion 1111, and the fixing member 130 is a bolt, which passes through the through hole on the fixing portion 1111 and is threadedly fixed to the cavity wall of the accommodating cavity 121. Moreover, in the present embodiment, in order to improve the connection strength between the first support member 111 and the cavity wall of the accommodating cavity 121, the first support member 111 is provided with fixing portions 1111 at both ends in the left and right directions, and the bolts respectively threadably fix the left and right ends of the first support member 111 to the cavity wall of the accommodating cavity 121. In other embodiments, the fixing portion 1111 may also be provided on the second support member 112, or the fixing portion 1111 may be provided on both the first support member 111 and the second support member 112, which is not specifically limited in the present embodiment.

[0059] To ensure the sealing effect between the wiring cavity 115 and the accommodating cavity 121, as Figure 4 As shown, the support structure 110 also includes a blocking piece 113, a through hole 1121 is opened on the second support piece 112, the blocking piece 113 blocks the through hole 1121, the blocking piece 113 has a signal transmission function, the low-voltage wiring harness 4000 is split into two sections, one section of the low-voltage wiring harness 4000 is arranged in the accommodating cavity 121 and is connected to the low-voltage port 2100 of the battery module 2000, and the other section of the low-voltage wiring harness 4000 is routed in the routing cavity 115 and connected to the BMS, and the blocking piece 113 is configured to connect the two sections of the low-voltage wiring harness 4000. By opening a through hole 1121 on the second support member 112 and using a blocking member 113 with a signal transmission function to block the through hole 1121, it is possible to ensure effective sealing of the wiring cavity 115 and the accommodating cavity 121. By splitting the low-voltage wiring harness 4000 into two sections, one section of the low-voltage wiring harness 4000 is arranged in the accommodating cavity 121 and connected to the low-voltage port 2100 of the battery module 2000, and the other section of the low-voltage wiring harness 4000 is placed in the wiring cavity 115 and connected to the BMS, and the two sections of the low-voltage wiring harness 4000 are connected using the blocking member 113, which can ensure normal signal transmission of the low-voltage wiring harness 4000. It should be noted that in this embodiment, the blocking member 113 is an adapter. The specific structure and working principle of the blocking member 113 belong to the prior art and will not be repeated here.

[0060] In addition, in order to further improve the plugging effect of the adapter on the penetration hole 1121, an elastic layer can be sleeved on the outer periphery of the adapter. By utilizing the elastic deformation characteristics of the elastic layer, when the adapter is plugged on the penetration hole 1121, the elastic layer is compressed and clamped between the outer peripheral wall of the adapter and the inner cavity wall of the penetration hole 1121. It should be noted that in this embodiment, the elastic layer is made of rubber material, and the rubber has good elasticity, toughness and wear resistance. In other embodiments, the elastic layer can also be made of other elastic materials, which are specifically limited in this embodiment.

[0061] As an optional solution, the blocking member 113 on the support structure 110 is directly opposite to the low-pressure port 2100 of the battery module 2000. By directly opposite the blocking member 113 to the low-pressure port 2100 of the battery module 2000, the length of the low-voltage wire harness 4000 in the accommodating cavity 121 and connected to the low-pressure port 2100 on the battery module 2000 can be shortened to the greatest extent, and the influence of the immersion liquid 3000 in the accommodating cavity 121 on the low-voltage wire harness 4000 can be reduced by shortening the length of the low-voltage wire harness 4000 in the accommodating cavity 121.

[0062] In an optional embodiment, a plurality of battery modules 2000 are arranged at intervals along the inner side of the accommodating cavity 121, the plurality of battery modules 2000 are arranged as a group along the left-right direction, and the plurality of groups of battery modules 2000 are arranged in sequence along the up-down direction, and a plurality of supporting structures 110 are arranged in the accommodating cavity 121, the plurality of supporting structures 110 are arranged in sequence along the up-down direction, and each group of battery modules 2000 corresponds to a supporting structure 110, so as to ensure that all battery modules 2000 in the accommodating cavity 121 can be stably connected to the BMS through the low-voltage wiring harness 4000.

[0063] It should be noted that, in this embodiment, 32 battery modules 2000 are arranged at intervals in the accommodating cavity 121, of which four battery modules 2000 are arranged as a group in the left-right direction, and the 32 battery modules 2000 are divided into 8 groups, and the 8 groups of battery modules 2000 are arranged at intervals in the up-down direction, and 8 support structures 110 extending in the left-right direction are arranged at intervals in the up-down direction in the accommodating cavity 121. In other embodiments, the specific number of battery modules 2000 in the accommodating cavity 121 can also be adjusted according to actual needs, and this embodiment does not make a specific limitation.

[0064] In this embodiment, the support structure 110 further includes a wiring buckle 114, wherein the wiring buckle 114 is disposed in the wiring cavity 115, and the wiring buckle 114 can fix the low-voltage wiring harness 4000 in the wiring cavity 115 along the left-right direction. By providing the wiring buckle 114 to fix the low-voltage wiring harness 4000 in the wiring cavity 115 along the left-right direction, not only can the aesthetics be improved, but it is also convenient for the staff to subsequently determine the battery module 2000 with a problem based on the low-voltage wiring harness 4000 in the wiring cavity 115, and facilitate the subsequent inspection and maintenance of the battery module 2000.

[0065] Furthermore, at least two routing buckles 114 are provided in the support structure 110, and at least two routing buckles 114 are arranged in the routing cavity 115 at intervals along the left-right direction, and at least two routing buckles 114 jointly fix the low-voltage wire harness 4000 in the routing cavity 115 along the left-right direction. By arranging at least two routing buckles 114 at intervals along the left-right direction in the routing cavity 115, the fixing effect of the low-voltage wire harness 4000 in the routing cavity 115 along the left-right direction can be further improved. The specific structure and fixing principle of the routing buckle 114 belong to the prior art and will not be described in detail here.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An immersion energy storage device, characterized in that: It comprises a battery compartment (100) and a low-pressure compartment (200) which are independent of each other; The low-pressure cabin (200) contains a BMS, the battery cabin (100) comprises a battery cabin body (120) and a support structure (110), the battery cabin body (120) has a receiving cavity (121) for receiving an immersion liquid (3000), and the battery module (2000) is received in the receiving cavity (121); The support structure (110) is detachably fixed to the cavity wall of the accommodating cavity (121); the support structure (110) has a wiring cavity (115) extending along a preset direction; the wiring cavity (115) and the accommodating cavity (121) are isolated from each other; one end of the low-voltage wiring harness (4000) is connected to the battery module (2000); the other end of the low-voltage wiring harness (4000) extends into the wiring cavity (115) for wiring and is connected to the BMS in the low-pressure cabin (200).

2. The submerged energy storage device according to claim 1, characterized in that: The support structure (110) comprises: A first support member (111); A second support member (112), wherein the first support member (111) and the second support member (112) both extend along the preset direction, the first support member (111) and the second support member (112) are interlocked with each other and together form the wiring cavity (115), and the first support member (111) and / or the second support member (112) are detachably fixed to the cavity wall of the accommodating cavity (121).

3. The submerged energy storage device according to claim 2, characterized in that: The support structure (110) further comprises: A blocking member (113), wherein a through hole (1121) is provided on the first supporting member (111) and / or the second supporting member (112), and the blocking member (113) blocks the through hole (1121); The blocking member (113) has a signal transmission function. The low-voltage wiring harness (4000) is split into two sections. One section of the low-voltage wiring harness (4000) is arranged in the accommodating cavity (121) and is connected to the low-voltage port (2100) of the battery module (2000). The other section of the low-voltage wiring harness (4000) is routed in the routing cavity (115) and is connected to the BMS. The blocking member (113) is configured to connect the two sections of the low-voltage wiring harness (4000).

4. The submerged energy storage device according to claim 3, characterized in that: The support structure (110) is directly opposite to the low-pressure port (2100) of the battery module (2000).

5. The submerged energy storage device according to claim 2, characterized in that: The support structure (110) further comprises: A wiring buckle (114), wherein the wiring buckle (114) is disposed in the wiring cavity (115), and the wiring buckle (114) can fix the low-voltage wiring harness (4000) in the wiring cavity (115) along an extension direction of the wiring cavity (115).

6. The submerged energy storage device according to claim 5, characterized in that: At least two of the wiring buckles (114) are arranged in the support structure (110); at least two of the wiring buckles (114) are arranged in the wiring cavity (115) at intervals along the extension direction of the wiring cavity (115); at least two of the wiring buckles (114) jointly fix the low-voltage wiring harness (4000) in the wiring cavity (115) along the extension direction of the wiring cavity (115).

7. The submerged energy storage device according to claim 2, characterized in that: The first support member (111) is provided with a fixing portion (1111) at at least one end along its extension direction, and the battery compartment (100) further comprises a fixing member (130), wherein the fixing member (130) is capable of detachably fixing the fixing portion (1111) to the cavity wall of the battery compartment body (120); And / or, the second support member (112) is provided with the fixing portion (1111) at least at one end along its extension direction, and the fixing member (130) is capable of detachably fixing the fixing portion (1111) to the cavity wall of the battery compartment body (120).

8. The submerged energy storage device according to claim 1, characterized in that: The extension direction of the wiring cavity (115) is perpendicular to the extension direction of the high-voltage circuit harness on the battery module (2000).

9. The submerged energy storage device according to claim 1, characterized in that: The submerged energy storage device also includes: A high-pressure cabin (300), wherein the high-pressure cabin (300) is independent of the battery cabin (100) and the low-pressure cabin (200), and a charging and discharging docking device is arranged in the high-pressure cabin (300), and the charging and discharging docking device is connected to the high-voltage circuit harness of the battery module (2000).

10. The submerged energy storage device according to claim 1, characterized in that: The submerged energy storage device also includes: A cooling chamber (400), wherein the cooling chamber (400) is independent of the battery chamber (100) and the low-pressure chamber (200), and a circulating cooling device is arranged in the cooling chamber (400), wherein the circulating cooling device is configured to circulate and cool the immersion liquid (3000).

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