Immersed battery device

Abstract

The utility model provides immersed battery equipment, the immersed battery equipment comprises a battery box and a battery module, the battery box is provided with a first chamber for accommodating a liquid cooling medium, and a liquid inlet and a liquid outlet which are communicated with the first chamber, the battery module is arranged in the first chamber, and the battery module comprises a fixed frame and a battery cell arranged in the fixed frame. According to the immersed battery equipment disclosed by the utility model, the battery module is arranged in the first cavity of the battery box, the battery cell of the battery module is arranged in the fixing frame, and the liquid cooling medium in the first cavity can penetrate through the fixing frame and is in direct contact with the battery cell for heat exchange and cooling, so that the immersed battery equipment has relatively high heat exchange and cooling efficiency; and the temperature difference between the battery cells of the same battery module is relatively small, the structure is simple, and the space utilization rate is high.

Description

Technical Field

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

[0002] In related technologies, immersed battery equipment uses a liquid-cooling chamber within the battery box, immersing the sealed battery module in a liquid-cooling medium within the chamber. Heat is exchanged between the liquid-cooling medium and the battery module, thereby cooling the battery module. However, since the heat of the battery module comes from the battery cells within its sealed housing, the liquid-cooling medium needs to pass through the battery module housing to exchange heat with the battery cells, resulting in low heat exchange and cooling efficiency and a complex structure. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiments of the present invention provide an immersion battery device that has high heat exchange and cooling efficiency, a simple structure, and high space utilization.

[0004] The submerged battery device of the present invention includes:

[0005] A battery box, the battery box having a first chamber for accommodating a liquid cooling medium, and a liquid inlet and a liquid outlet communicating with the first chamber;

[0006] A battery module is arranged in the first cavity, and the battery module includes a fixing frame and a battery cell arranged in the fixing frame.

[0007] The immersed battery equipment of the embodiment of the present utility model arranges the battery module in the first chamber of the battery box, and the battery cells of the battery module are arranged in the fixing frame. The liquid cooling medium in the first chamber can pass through the fixing frame and directly contact the battery cells for heat exchange and cooling, thereby having a high heat exchange and cooling efficiency, and making the temperature difference between the battery cells of the same battery module small, and has a simple structure and high space utilization.

[0008] In some embodiments, the fixing frame includes a first bracket, a second bracket and a connecting member, the first bracket and the second bracket are arranged at intervals and connected by a plurality of the connecting members, a plurality of the battery cells are arranged between the first bracket and the second bracket, and the plurality of the connecting members are arranged at intervals on the periphery of the plurality of the battery cells.

[0009] In some embodiments, the battery box includes a first partition, a plurality of the first partitions are arranged at intervals along a first direction, and are arranged in the first chamber to divide the first chamber into a plurality of sub-cavities arranged at intervals along the first direction, and each of the sub-cavities is provided with a corresponding battery module.

[0010] In some embodiments, the first partition is provided with a channel passing through the first partition along the first direction, one of the multiple sub-cavities is connected to the liquid inlet, the liquid inlet and the channel connected to one sub-cavity are respectively located at the two ends of one sub-cavity along the second direction, another sub-cavity among the multiple sub-cavities is connected to the liquid outlet, the liquid outlet and the channel connected to another sub-cavity are respectively located at the two ends of another sub-cavity along the second direction, among the multiple first partitions located between the liquid inlet and the liquid outlet, one of the first partitions is provided with the channel at one end along the second direction, and another of the first partitions is provided with the channel at the other end along the second direction, and the second direction is orthogonal to the first direction.

[0011] In some embodiments, the submerged battery device further includes a safety valve and / or a liquid level gauge, both of which are provided on the battery box, the safety valve is connected to the first chamber, and the liquid level gauge is used to obtain the liquid level of the liquid cooling medium in the first chamber.

[0012] In some embodiments, the liquid cooling medium is firefighting fluid.

[0013] In some embodiments, the battery box includes a second partition, which is disposed in the battery box and divides the inner cavity of the battery box into the first chamber and the second chamber;

[0014] The submerged battery device further includes a high-voltage box and a busbar assembly. The high-voltage box is disposed in the second chamber. The busbar assembly connects the plurality of battery modules in series. Both ends of the busbar assembly are electrically connected to the high-voltage box.

[0015] In some embodiments, the submerged battery equipment further includes a junction cabinet, which is electrically connected to the high-voltage box in the battery box. There are multiple battery boxes, and the high-voltage boxes 5 of the multiple battery boxes are arranged in parallel with the junction cabinet.

[0016] In some embodiments, the submerged battery device further includes a liquid cooling unit connected to the liquid inlet and the liquid outlet of the battery box, and the first chambers of a plurality of the battery boxes are arranged in parallel with the liquid cooling unit.

[0017] In some embodiments, the submerged battery equipment further includes a distribution box, which is electrically connected to the high-voltage box, the junction box, and the liquid cooling unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a first embodiment of a battery box in the embodiment of the present utility model;

[0019] Figure 2This is a structural diagram of a second embodiment of a battery box in the embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of a battery module in an embodiment of the present utility model;

[0021] Figure 4 It is a structural schematic diagram of an immersion battery device according to an embodiment of the present utility model.

[0022] Reference numerals:

[0023] 1. Battery box; 11. First chamber; 12. Liquid inlet; 13. Liquid outlet; 14. First partition; 15. Second partition; 16. Second chamber; 2. Battery module; 21. Fixing bracket; 211. First bracket; 212. Second bracket; 213. Connector; 22. Battery cell; 3. Safety valve; 4. Liquid level gauge; 5. High-voltage box; 6. Busbar assembly; 7. Combiner cabinet; 8. Liquid cooling unit; 9. Distribution box. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0025] Reference below Figure 1-Figure 4 An immersion battery device according to an embodiment of the present invention is described.

[0026] like Figure 1-Figure 4 As shown, the submerged battery device of the embodiment of the present invention includes a battery box 1 and a battery module 2.

[0027] The battery box 1 is provided with a first chamber 11 for accommodating a liquid cooling medium, and a liquid inlet 12 and a liquid outlet 13 communicating with the first chamber 11. A battery module 2 is disposed within the first chamber 11 and includes a mounting frame 21 and battery cells 22 disposed within the mounting frame 21.

[0028] Specifically, such as Figure 1 and Figure 3 As shown, the inner cavity of the battery box 1 is a first chamber 11 for accommodating a liquid cooling medium. The outer wall of the battery box 1 is provided with a liquid inlet 12 and a liquid outlet 13. The liquid inlet 12 and the liquid outlet 13 are both connected to the first chamber 11. The liquid cooling medium is supplied into the first chamber 11 through the liquid inlet 12 for heat exchange, and the liquid cooling medium after heat exchange is discharged from the battery box 1 through the liquid outlet 13.

[0029] Multiple battery modules 2 are provided in the first chamber 11. The battery modules 2 include a fixing frame 21 and battery cells 22. The battery cells 22 are provided in the fixing frame 21. The liquid cooling medium in the first chamber 11 passes through the fixing frame 21 and directly contacts the battery cells 22, and directly exchanges heat with the battery cells 22 to cool the battery cells 22.

[0030] The immersed battery equipment of the embodiment of the present utility model arranges the battery module in the first chamber of the battery box, and the battery cells of the battery module are arranged in the fixing frame. The liquid cooling medium in the first chamber can pass through the fixing frame and directly contact the battery cells for heat exchange and cooling, thereby having a high heat exchange and cooling efficiency, and making the temperature difference between the battery cells of the same battery module small, and has a simple structure and high space utilization.

[0031] In some embodiments, the liquid cooling medium is a firefighting fluid.

[0032] The use of fire-fighting fluid as the liquid cooling medium can not only cool and dissipate the heat of the battery cells, but also directly extinguish fires when the battery cells explode and catch fire. This eliminates the need to set up an additional fire-fighting system and reduces the structural complexity of the immersed battery equipment.

[0033] In some embodiments, the fixing frame 21 includes a first bracket 211, a second bracket 212 and a connecting member 213. The first bracket 211 and the second bracket 212 are arranged at intervals and connected by multiple connecting members 213. Multiple battery cells 22 are arranged between the first bracket 211 and the second bracket 212, and multiple connecting members 213 are arranged at intervals on the periphery of the multiple battery cells 22.

[0034] like Figure 3 As shown, the first bracket 211 and the second bracket 212 are both horizontally arranged plates, and the first bracket 211 and the second bracket 212 are arranged at intervals in the vertical direction. A plurality of battery cells 22 are arranged between the first bracket 211 and the second bracket 212. Preferably, the plurality of battery cells 22 are arranged in two rows, and the bottom surface of the first bracket 211 and the top surface of the second bracket 212 are provided with mounting grooves. The top of the battery cell 22 is embedded in the corresponding mounting groove of the first bracket 211, and the bottom of the battery cell 22 is embedded in the corresponding mounting groove of the second bracket 212. Each battery cell 22 is connected to a low-voltage communication harness.

[0035] The first bracket 211 or the second bracket 212 has an integrated busbar, which is located on the end surface of the first bracket 211 or the second bracket 212 facing the battery cell 22 and is abutted and connected to the tabs of each battery cell 22 to connect multiple battery cells 22 in series and parallel.

[0036] The first bracket 211 and the second bracket 212 are connected by a plurality of connectors 213. The connectors 213 extend vertically and connect the first bracket 211 and the second bracket 212. The connectors 213 are arranged in a spaced relationship around the vertical direction, and the plurality of battery cells 22 are located in the space formed by the connectors 213. The first bracket 211 and the second bracket 212 are preferably made of insulating material.

[0037] Preferably, the connecting member 213 includes a connecting plate and a bolt. The connecting plate is arranged on the side of the first bracket 211 and the side of the second bracket 212. The top of the connecting plate is connected to the side of the first bracket 211 through a bolt, and the bottom of the connecting plate is connected to the side of the second bracket 212 through another bolt.

[0038] It is understandable that the connecting member is not limited to including a connecting plate and a bolt. In other embodiments, the connecting member is a bolt, which extends in a vertical direction and passes through the first bracket and the second bracket.

[0039] It is understood that the structure of the fixing frame is not limited to Figure 3 In the structure shown, in other embodiments, the first bracket and / or the second bracket are provided with meshes.

[0040] In some embodiments, the battery box 1 includes a first partition 14, a plurality of first partitions 14 are arranged at intervals along the first direction, and are disposed in the first chamber 11 to separate the first chamber 11 into a plurality of partitions along the first direction (such as Figure 2 The sub-cavities are arranged at intervals in the vertical direction (as shown), and each sub-cavity is provided with a corresponding battery module 2.

[0041] like Figure 1 and Figure 2 As shown, the first partition 14 is horizontally arranged in the first chamber 11, and the side wall of the first partition 14 is connected to the chamber wall of the first chamber 11 to separate the first chamber 11. There are multiple first partitions 14, and the multiple first partitions 14 are arranged at intervals along the vertical direction to divide the first chamber 11 into multiple sub-cavities arranged at intervals along the vertical direction. Specifically, the space between two adjacent first partitions 14 serves as a sub-cavity. Furthermore, the space between the uppermost first partition 14 and the chamber top surface of the first chamber 11 can also serve as a sub-cavity, and the space between the lowermost first partition 14 and the chamber bottom surface of the first chamber 11 can also serve as a sub-cavity.

[0042] Each sub-cavity is provided with a battery module 2. Preferably, each sub-cavity is provided with two battery modules 2, which are spaced apart in the left-right direction. The first partition 14 at the upper end of the sub-cavity and / or the first partition 14 at the lower end of the sub-cavity are connected to the fixing frame 21 via bolts to secure the battery modules 2.

[0043] It is understandable that the battery module is not limited to being fixed on the first partition. In other embodiments, the inner wall of the battery box is provided with a bracket, and the battery module is arranged on the bracket. In other words, the inner wall of the first chamber is provided with a bracket, and the battery module is arranged on the bracket.

[0044] In some embodiments, the first partition 14 is provided with a channel penetrating the first partition 14 along the first direction, one of the plurality of sub-cavities is connected to the liquid inlet 12, and the liquid inlet 12 and the channel connected to the sub-cavity are respectively located in a sub-cavity along the second direction (such as Figure 2 At both ends of the left and right directions), another sub-cavity among the multiple sub-cavities is connected to the liquid outlet 13, and the liquid outlet 13 and the channel connected to the other sub-cavity are respectively located at the two ends of the other sub-cavity along the second direction, and among the multiple first partitions 14 located between the liquid inlet 12 and the liquid outlet 13, one first partition 14 is provided with a channel at one end along the second direction, and another first partition 14 is provided with a channel at the other end along the second direction, and the second direction is orthogonal to the first direction.

[0045] like Figure 1 and Figure 2 As shown, the first partition plate 14 is provided with a channel running through the first partition plate 14 in a vertical direction, and the channel is used to connect the sub-cavities on the upper and lower sides of the first partition plate 14 so that the liquid cooling medium flows between the two sub-cavities.

[0046] The left end of the lowermost sub-chamber is connected to the liquid inlet 12, the right end of the lowermost sub-chamber is connected to the upward channel, so that the lowermost sub-chamber is connected to the adjacent sub-chamber above, the right end of the uppermost sub-chamber is connected to the liquid outlet 13, and the left end of the uppermost sub-chamber is connected to the downward channel, so that the uppermost sub-chamber is connected to the adjacent sub-chamber below. Along the vertical direction, in the two adjacent first partitions 14, a channel is provided at the left end of one first partition 14, and a channel is provided at the right end of the other first partition 14.

[0047] The liquid cooling medium enters the bottommost sub-cavity through the liquid inlet 12, then flows from left to right, enters the upper sub-cavity through the right end channel of the bottommost sub-cavity, and moves from right to left within the upper sub-cavity. The liquid cooling medium flows in an S-shaped pattern from bottom to top within the multiple sub-cavities and channels until it reaches the topmost sub-cavity. The liquid cooling medium enters through the left end channel of the topmost sub-cavity, then flows from left to right, and finally is discharged from the liquid outlet 13. This ensures that the liquid cooling medium passes through all battery modules 2 during its flow, ensuring heat dissipation and cooling for all battery modules 2.

[0048] It can be understood that the liquid inlet is not limited to being located at the bottom end of the first chamber, and the liquid outlet is not limited to being located at the top end of the first chamber. The number of liquid inlets and liquid outlets is not limited to one. In other embodiments, the liquid inlet is located in the middle of the first chamber, and the left end of the vertically middle sub-chamber among the multiple sub-chambers is connected to the liquid inlet. The upper and lower ends of the middle sub-chamber are provided with first partitions, and the channels of the two first partitions are connected to the right end of the middle sub-chamber. There are two liquid outlets, and the right end of the uppermost sub-chamber and the right end of the lowermost sub-chamber are respectively connected to the corresponding liquid outlets, and the left end of the uppermost sub-chamber and the left end of the lowermost sub-chamber are respectively connected to the corresponding channels.

[0049] It can be understood that the first partition is not limited to being provided with a channel. In other embodiments, the first partition is not provided with a channel, and the liquid inlet and the liquid outlet are both provided in multiple positions corresponding to the sub-cavities. The left end of each sub-cavity is connected to the corresponding liquid inlet, and the right end of each sub-cavity is connected to the corresponding liquid outlet. The liquid cooling medium enters the corresponding sub-cavity from the liquid inlet, then flows from left to right in the sub-cavity, and is discharged from the sub-cavity from the corresponding liquid outlet.

[0050] In some embodiments, the submerged battery device of the present invention further includes a safety valve 3 . The safety valve 3 and the liquid level gauge 4 are both provided on the battery box 1 . The safety valve 3 is connected to the first chamber 11 .

[0051] like Figure 2 As shown, a safety valve 3 is provided on the side wall of the battery box 1 , and the safety valve 3 is communicated with the top end of the first chamber 11 for relieving pressure when the pressure in the first chamber 11 is too high.

[0052] In some embodiments, the submerged battery device of the present invention further includes a liquid level gauge 4 , which is used to obtain the liquid level of the liquid cooling medium in the first chamber 11 .

[0053] like Figure 2 As shown, a liquid level gauge 4 is provided on the side wall of the battery box 1, and the liquid level gauge 4 is used to obtain the liquid level of the liquid cooling medium in the first chamber 11. Preferably, the liquid level gauge 4 is an on-site liquid level gauge, which is provided on the side wall of the battery box 1 and extends in the vertical direction. The on-site liquid level gauge is connected to the first chamber 11 and obtains and displays the liquid level of the liquid cooling medium in the first chamber 11.

[0054] The liquid inlet 12 and the liquid outlet 13 are preferably provided with valves to adjust the flow of the liquid cooling medium into and out of the battery box 1 according to the data obtained by the liquid level meter 4, thereby adjusting the liquid level of the first chamber 11 in the battery box 1.

[0055] In some embodiments, the battery box 1 includes a second separator 15, which is disposed within the battery box 1 and divides the interior of the battery box 1 into a first chamber 11 and a second chamber 16. The submerged battery device also includes a high-voltage box 5 and a busbar assembly 6. The high-voltage box 5 is disposed within the second chamber 16. The busbar assembly 6 connects multiple battery modules 2 in series, and both ends of the busbar assembly 6 are electrically connected to the high-voltage box 5.

[0056] like Figure 2 As shown, the second partition 15 is horizontally arranged in the inner cavity of the battery box 1, and the side wall of the second partition 15 is connected to the inner wall of the battery box to divide the inner cavity of the battery box 1 into a first chamber 11 and a second chamber 16. The second chamber 16 is located above the first chamber 11 and does not pass through the liquid cooling medium. A high-voltage box 5 is provided in the second chamber 16, and the high-voltage box 5 is supported on the second partition 15 and connected to the second partition 15 by bolts.

[0057] like Figure 1 and Figure 2 As shown, the busbar assembly 6 includes multiple busbars, and corresponding busbars are provided between two adjacent battery modules 2. Specifically, the busbar is connected between the integrated busbars of two adjacent battery modules 2, so that all the battery modules 2 are connected in series through multiple busbars. The battery module 2 located at one end of the series connection direction is provided with a busbar serving as a total positive pole connector, and the battery module 2 located at the other end of the series connection direction is provided with a busbar serving as a total negative pole connector. The busbar serving as the total positive pole connector and the busbar serving as the total negative pole connector are electrically connected to the high-voltage box 5 through lines respectively.

[0058] like Figure 1 As shown, among the two battery modules 2 located at the bottom, one battery module 2 is provided with a busbar serving as a total positive terminal, and the other battery module 2 is provided with a busbar serving as a total negative terminal. The two battery modules 2 located at the top are connected by a busbar extending in the left-right direction. Among the multiple battery modules 2 arranged at intervals in the vertical direction, two adjacent battery modules 2 are connected by a busbar extending in the up-down direction.

[0059] like Figure 2 As shown, the two battery modules 2 at the bottom are connected by a busbar extending in the left-right direction. Among the two battery modules 2 at the top, one battery module 2 is provided with a busbar serving as a total positive terminal, and the other battery module 2 is provided with a busbar serving as a total negative terminal. Among the multiple battery modules 2 arranged at intervals in the vertical direction, two adjacent battery modules 2 are connected by a busbar extending in the up-down direction and tilted in the left-right direction.

[0060] Preferably, the battery box 1 includes a box body and a box door. The front side of the box body is provided with an opening connected to the inner cavity. The box door is connected to the box body and can be rotated in a vertical direction relative to the box body to open and close the opening. The inner wall surface of the box door is preferably provided with a seal. When the box door is closed, the front wall surface of the first partition 14 and the front wall surface of the second partition 15 are both against the seal to ensure sealing, especially to prevent the liquid cooling medium from entering the second chamber 16 from the first chamber 11. When the box door is open, the high-voltage box 5 and the battery module 2 can be repaired and replaced.

[0061] In some embodiments, the submerged battery equipment of the embodiment of the present invention also includes a junction cabinet 7, which is electrically connected to the high-voltage box 5 in the battery box 1. There are multiple battery boxes 1, and the high-voltage boxes 5 of multiple battery boxes 1 are arranged in parallel with the junction cabinet 7.

[0062] like Figure 4 As shown, a combiner cabinet 7 and multiple battery boxes 1 are provided on the base. Preferably, the multiple battery boxes 1 are arranged in two rows, and the combiner cabinet 7 is provided at the end of one of the rows of battery boxes 1. The high-voltage box 5 in each battery box 1 is electrically connected to the combiner cabinet 7 via wiring, and the high-voltage boxes 5 of the multiple battery boxes 1 are arranged in parallel with the combiner cabinet 7.

[0063] In some embodiments, the submerged battery device of the present invention further includes a liquid cooling unit 8, which is connected to the liquid inlet 12 and the liquid outlet 13 of the battery box 1, and the first chambers 11 of multiple battery boxes 1 are arranged in parallel with the liquid cooling unit 8.

[0064] like Figure 4 As shown, a liquid cooling unit 8 is also provided on the base, which is located at the end of another row of battery boxes 1 and is arranged in the same column and at intervals with the junction cabinet 7. The liquid inlet 12 and the liquid outlet 13 of each battery box 1 are connected to the liquid cooling unit 8 through corresponding pipelines. The liquid cooling medium circulates between the liquid cooling unit 8 and the first chamber 11 of the battery box 1, and is cooled by the liquid cooling unit 8 to dissipate heat and cool the battery module 2 in the first chamber 11. The first chambers 11 of multiple battery boxes 1 are connected to the liquid cooling unit 8 in parallel to ensure that the temperature of the liquid cooling medium supplied to each battery box 1 is consistent, and can effectively dissipate heat and cool, thereby avoiding temperature differences among the battery modules 2 in multiple battery boxes 1.

[0065] In some embodiments, the submerged battery device of the present invention further includes a distribution box 9 , which is electrically connected to the high-voltage box 5 , the combiner cabinet 7 and the liquid cooling unit 8 .

[0066] like Figure 4As shown, a distribution box 9 is also provided on the base. The distribution box 9 is preferably located at the end of one row of battery boxes 1 and is located in the same protective box as the combiner cabinet 7. The high-voltage box 5, combiner cabinet 7, and liquid cooling unit 8 of each battery box 1 are connected to the distribution box 9 via wiring to supply power.

[0067] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0068] Furthermore, the terms "first" and "second" are used solely for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0069] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0070] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0072] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. An immersion battery device, characterized in that: include: A battery box (1), the battery box (1) being provided with a first chamber (11) for accommodating a liquid cooling medium, and a liquid inlet (12) and a liquid outlet (13) communicating with the first chamber (11); A battery module (2), the battery module (2) being arranged in the first chamber (11), the battery module (2) comprising a fixing frame (21) and a battery cell (22) arranged in the fixing frame (21), the fixing frame (21) comprising a first bracket (211) and a second bracket (212), the first bracket (211) and the second bracket (212) being arranged at intervals in the vertical direction, and a plurality of the battery cells (22) being arranged between the first bracket (211) and the second bracket (212); The battery box (1) comprises a first partition (14), wherein a plurality of the first partitions (14) are arranged at intervals in an upper and lower direction and are arranged in the first chamber (11) to divide the first chamber (11) into a plurality of sub-cavities arranged at intervals in an upper and lower direction, and each of the sub-cavities is provided with a corresponding battery module (2); The first partition (14) is provided with a channel running through the first partition (14) from top to bottom, the sub-cavity at the lower end is connected to the liquid inlet (12), the liquid inlet (12) and the channel connected to one sub-cavity are respectively located at the left and right ends of one sub-cavity, the sub-cavity at the upper end is connected to the liquid outlet (13), the liquid outlet (13) and the channel connected to another sub-cavity are respectively located at the left and right ends of another sub-cavity, and among the plurality of first partitions (14) located between the liquid inlet (12) and the liquid outlet (13), one first partition (14) is provided with the channel at one end along the left and right sides, and another first partition (14) is provided with the channel at the other end along the left and right sides.

2. The submerged battery device according to claim 1, characterized in that The fixing frame (21) further includes a connecting piece (213), the first bracket (211) and the second bracket (212) are connected via a plurality of the connecting pieces (213), and the plurality of the connecting pieces (213) are arranged at intervals on the periphery of the plurality of the battery cells (22).

3. The submerged battery device according to claim 1, characterized in that: It also includes a safety valve (3) and / or a liquid level gauge (4), wherein the safety valve (3) and the liquid level gauge (4) are both arranged on the battery box (1), the safety valve (3) is connected to the first chamber (11), and the liquid level gauge (4) is used to obtain the liquid level of the liquid cooling medium in the first chamber (11).

4. The submerged battery device according to claim 1, characterized in that: The liquid cooling medium is fire-fighting fluid.

5. The submerged battery device according to any one of claims 1 to 4, characterized in that: The battery box (1) comprises a second partition (15), the second partition (15) being arranged in the battery box (1) and dividing the inner cavity of the battery box (1) into the first chamber (11) and the second chamber (16); The submerged battery device further comprises a high-voltage box (5) and a busbar assembly (6), wherein the high-voltage box (5) is arranged in the second chamber (16), the busbar assembly (6) connects a plurality of the battery modules (2) in series, and both ends of the busbar assembly (6) are electrically connected to the high-voltage box (5).

6. The submerged battery device according to claim 5, characterized in that: It also includes a junction cabinet (7), which is electrically connected to the high-voltage box (5) in the battery box (1). There are multiple battery boxes (1), and the high-voltage boxes (5) of the multiple battery boxes (1) are arranged in parallel with the junction cabinet (7).

7. The submerged battery device according to claim 6, characterized in that: The invention also includes a liquid cooling unit (8), wherein the liquid cooling unit (8) is connected to the liquid inlet (12) and the liquid outlet (13) of the battery box (1), and the first chambers (11) of the plurality of battery boxes (1) are arranged in parallel with the liquid cooling unit (8).

8. The submerged battery device according to claim 7, characterized in that: It also includes a distribution box (9), which is electrically connected to the high-voltage box (5), the junction box (7) and the liquid cooling unit (8).

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