Integrated Battery Module

Abstract

The present application discloses an integrated battery module including a box, a liquid-cooling component, and a battery cell, wherein the box includes a housing and a bottom tray structure, and the bottom tray structure is provided with at least one relief passage and at least one liquid-cooling passage, the relief passage communicates with an explosion-proof valve through a cavity in the housing, and the liquid-cooling passage communicates with a liquid-cooling flow path in a liquid-cooling plate.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to Chinese patent applications with application number 2023100705317 filed with the China Patent Office on January 29, 2023, and application number 202301354582 filed with the China Patent Office on January 29, 2023, the entire contents of which are incorporated herein by reference.

[0002] TECHNICAL FIELD This application relates to the field of battery thermal management, and in particular to integrated battery modules. [Background technology]

[0003] With the development of the economy and the progress of new energy technologies, electrochemical energy storage products are becoming more and more mature in the market, and battery modules are one type of electrochemical energy storage products.

[0004] In conventional battery modules, due to factors such as lightweight design, the bottom protection plate and battery cell tray are usually made of thin plate material, and a relief passage is formed between them to discharge flames and flammable gases in the event of thermal runaway and fulfill a safety protection role. At the same time, a liquid cooling system must also be installed inside the battery pack box. The above structural design has the following technical defects and shortcomings:

[0005] (1) Due to the lack of strength of the bottom protection plate, the battery module is prone to being hit by the bottom protection plate during use (e.g., while the vehicle is running), and the bottom protection plate is difficult to meet the test requirements for bottom extrusion, ball impact, and stone impact. (2) The battery cell tray of the battery module requires a mold to be manufactured by pressing or die-casting, and a sealing design is required between the battery cell tray and the bottom protective plate to ensure the sealing performance of the relief passage, which results in high manufacturing costs and insufficient sealing performance. (3) The liquid cooling piping inside the battery module takes up a lot of space inside the box, resulting in a lack of design space.

[0006] Therefore, in the related art, there is an urgent need to develop a battery module that has high structural strength, excellent sealing performance, and can save installation space. Summary of the Invention [Problem to be solved by the invention]

[0007] This application provides an integrated battery module, which has the characteristics of a simple and reasonable structural design, high structural strength, excellent sealing performance, and saving installation space. [Means for solving the problem]

[0008] In a first aspect, the present application provides an integrated battery module, the integrated battery module comprising: a box including a housing and a bottom tray structure, the bottom tray structure being fixedly attached to one side of the housing, an explosion-proof valve being provided on the outer periphery of the housing, a cavity being provided inside the housing and communicating with the explosion-proof valve, the bottom tray structure being provided with at least one relief passage and at least one liquid cooling passage, the relief passage being communicating with the explosion-proof valve through the cavity; a liquid-cooled component including a liquid-cooled plate provided in an accommodating space surrounded by the housing and the bottom tray structure, the liquid-cooled plate having at least one liquid-cooled flow path therein, the liquid-cooled flow path communicating with the liquid-cooled passage; The battery cell includes a plurality of battery cells, the plurality of battery cells being spaced apart and provided in the accommodating space. [Effects of the Invention]

[0009] In the integrated battery module provided in the present application, a bottom tray structure is attached to one side of the housing, and the bottom tray structure is provided with at least one relief passage and at least one liquid cooling passage, the relief passage communicating with the explosion-proof valve through a cavity in the housing, and the liquid cooling passage communicating with the liquid cooling channel of the liquid cooling plate. This structural design allows the bottom protection plate, battery cell tray, relief passage, and other structures of a conventional battery module to be integrated into the bottom tray structure. This integrated structural design avoids the need for a relatively thin bottom protection plate and the need for a sealing design between the bottom protection plate and the battery cell tray, resulting in a simple and rational structure, a simplified installation process, and a significant reduction in manufacturing costs. Furthermore, the structural strength of the entire bottom tray structure is high, and the sealing performance of the relief passage is excellent.

[0010] Furthermore, by eliminating the need for a liquid-cooled piping structure in a conventional battery module and realizing liquid cooling of the battery cells through the liquid-cooled passages in the bottom tray structure and the liquid-cooled flow paths in the liquid-cooled plate, the installation space inside the box can be significantly saved, and in addition to realizing relief and liquid cooling functions in the event of thermal runaway of the battery module, it also provides design space for liquid cooling devices for other high-heat generating electrical components inside the box, thereby solving the problem of liquid cooling of high-heat generating electrical components. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a structural schematic diagram of an integrated battery module of the present application; FIG. [Figure 2] FIG. 2 is an exploded view of the housing, bottom tray structure, and flow divider plate of the present application. [Figure 3] FIG. 3 is a partially enlarged schematic view of part H shown in FIG. [Figure 4] FIG. 2 is an exploded view of the liquid-cooled component of the present application. [Figure 5] FIG. 2 is another structural schematic diagram of the integrated battery module of the present application. [Figure 6] FIG. 6 is a partially enlarged schematic view of a portion K shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] According to the description of this application, the directions or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are directions or positional relationships indicated based on the drawings, and are merely for the purpose of conveniently explaining and concisely describing this application, and do not indicate or imply that the devices or parts shown need to have a particular orientation or be constructed or operate in a particular direction, and therefore should not be construed as limitations of this application.

[0013] In one embodiment, a plurality of mounting holes are provided on the side of the bottom tray structure facing the storage space, the storage space is connected to the relief passage (21) through the mounting holes, and the battery cells are provided in the mounting holes.

[0014] In one embodiment, the bottom tray structure and the liquid cooling plate are arranged perpendicular to each other, and both sides of the liquid cooling plate are closely spaced from the outer periphery of the battery cells.

[0015] In one embodiment, a sealant is further provided in the accommodating space, and the sealant is provided between two adjacent battery cells, between the battery cell and the liquid cooling plate, and between the battery cell and the housing.

[0016] In one embodiment, the integrated battery further includes a cover fixedly attached to a side of the housing remote from the bottom tray structure, thereby forming the storage space between the housing, the bottom tray structure, and the cover.

[0017] In one embodiment, based on the above embodiment, a technical solution is provided for the specific structure and installation of the liquid-cooled components, the flow divider plate and the inlet and outlet pipes.

[0018] In this technical solution, the number of the liquid-cooled plates is two or more, and the liquid-cooled plates are continuously bent along their horizontal extension direction to form a plurality of arc segments.

[0019] In one embodiment, the liquid-cooled component further includes a collecting fluid, a collecting cavity is provided inside the collecting fluid, the plurality of liquid-cooled flow paths inside the liquid-cooled plate are sequentially connected, and the liquid-cooled flow paths are connected to the liquid-cooled passages via the collecting cavity.

[0020] In one embodiment, the integrated battery module further includes a flow divider plate and water inlet and outlet pipes, wherein a water inlet cavity and a water outlet cavity that are isolated from each other are provided inside the flow divider plate, and the water inlet and outlet pipes include a water inlet pipe that communicates with the liquid cooling passage through the water inlet cavity and a water outlet pipe that communicates with the liquid cooling passage through the water outlet cavity.

[0021] In one embodiment, based on the above embodiment, a technical solution is provided for the specific structure and installation of BMS components, BDU components, and beams.

[0022] In this technical solution, the integrated battery module further includes a BMS component and a BDU component, and the BMS component and the BDU component are both arranged in the accommodating space.

[0023] In one embodiment, a beam is fixedly connected inside the housing, the liquid-cooled plate is fixedly attached to the beam, and the battery cells and the liquid-cooled components, the BMS components and the BDU components are respectively provided on both sides of the beam.

[0024] Example 1 1 and 2, according to a first embodiment of the present application, an integrated battery module includes a box including a housing 1 and a bottom tray structure 2, and the bottom tray structure 2 is fixedly attached to one side of the housing 1. An explosion-proof valve 11 is provided on the outer periphery of the housing 1, and a cavity communicating with the explosion-proof valve 11 is provided inside the housing 1. Here, the housing 1 is a rectangular housing structure, and the bottom tray structure 2 can be fixedly attached to one side of the housing 1 by welding pipes or other processing methods.

[0025] As shown in FIG. 3 , the bottom tray structure 2 is provided with at least one relief passage 21 and at least one liquid cooling passage 22, and the relief passage 21 is connected to the explosion-proof valve 11 via a cavity inside the housing 1. Here, the bottom tray structure 2 is preferably made of an extruded aluminum material, which eliminates the need for conventional press processing or die-casting for manufacturing molds for battery cell trays, providing high structural strength and a simple process. In addition, in the present application, the relief passage 21 and the liquid cooling passage 22 are formed in the bottom tray structure 2 by processing them using an external jig. Specifically, the relief passage 21 in the bottom tray structure 2 is used to vent flames and flammable gases generated when the battery module experiences thermal runaway to the outside through the explosion-proof valve 11 in the housing 1, thereby achieving a relief function without the need for a conventional battery module bottom protection plate and battery cell tray installation or sealing design between them. The liquid cooling passage 22 in the bottom tray structure 2 is used to provide a flow path for cooling water to form a liquid cooling system, thereby eliminating the need to set up a liquid cooling piping structure for the conventional battery module and saving installation space inside the box.

[0026] 1 and 4, the integrated battery module further includes a liquid-cooling component 3 including a liquid-cooling plate 31, and the housing 1 and bottom tray structure 2 form an accommodation space surrounded by the housing 1 and bottom tray structure 2. The liquid-cooling plate 31 is disposed within the accommodation space, and at least one liquid-cooling channel 33 communicating with the liquid-cooling passage 22 is disposed within the liquid-cooling plate 31. Here, the liquid-cooling passage 22 of the bottom tray structure 2 and the liquid-cooling channel 33 of the liquid-cooling plate 31 are combined to form a cooling circulation liquid-cooling system after cooling water is introduced, eliminating the need for a conventional liquid-cooling piping structure within the accommodation space and saving installation space within the box.

[0027] 4 and 5, the integrated battery module further includes a battery cell 4, and the battery cells 4 are provided in a plurality of spaces within the accommodating space surrounded by the housing 1 and the bottom tray structure 2. Specifically, the battery cells 4 are attached to the bottom tray structure 2, i.e., the bottom tray structure 2 provides structural support for the battery cells 4, has high structural strength, and can withstand large external forces during use and meet test requirements such as extrusion, ball hitting, or stone hitting.

[0028] In the technical solution of this embodiment, the present application provides structural support for the battery cells 4 through the overall structure of the bottom tray structure 2, realizes a relief function in the event of thermal runaway of the battery module through the relief passage 21, and realizes a liquid cooling function for the battery cells 4 through the liquid cooling passage 22 and the liquid cooling channel 33 of the liquid cooling plate 31, thereby integrating the conventional structures of a battery module, such as the bottom protection plate, battery cell tray, liquid cooling piping, and relief passage, into the bottom tray structure 2. As a result, the present application can install a relatively thin bottom protection plate and design a sealing between the bottom protection plate and the battery cell tray, and avoid the need for a complex arrangement of liquid cooling piping within the box, resulting in a simple and reasonable structural design, a simplified installation process, and a significant reduction in manufacturing costs. In addition, the overall structural strength of the bottom tray structure 2 is high, the sealing performance of the relief passage 21 is excellent, and the liquid cooling effect of the liquid cooling system is also good.

[0029] More specifically, by eliminating the need for a liquid-cooled piping structure in a conventional battery module, the present application can significantly save installation space within the box, and in addition to realizing the relief and liquid-cooling functions during thermal runaway of the battery module, it also provides more design space for liquid-cooling devices for other high-heat-generating electrical components within the box, thereby solving the problem of liquid-cooling for high-heat-generating electrical components.

[0030] 1 and 5 , in one alternative technical solution of this embodiment, a plurality of mounting holes 23 are provided on the side of the bottom tray structure 2 facing the accommodating space, the accommodating space is connected to a relief passage 21 through the mounting holes 23, and the battery cells 4 are disposed in the mounting holes 23. Here, the plurality of mounting holes 23 are provided at intervals in the bottom tray structure 2, and the battery cells 4 are disposed in the mounting holes 23, so that the battery cells 4 can be arranged in parallel and at intervals within the accommodating space. More specifically, if the battery module experiences a thermal runaway phenomenon, the generated flame and flammable gas flow into the relief passage 21 through the mounting holes 23, and are then guided by the relief passage 21 into the cavity of the housing 1, and finally discharged through the explosion-proof valve 11 of the housing 1, thereby realizing a relief function and improving the safety performance of the battery module.

[0031] 1 and 6 , in another alternative technical solution of this embodiment, the liquid cooling plate 31 is disposed perpendicular to the bottom tray structure 2, and both sides of the liquid cooling plate 31 are closely adjacent to the outer periphery of the battery cells 4. Here, by disposing the liquid cooling plate 31 and the bottom tray structure 2 perpendicular to each other, an installation space for the battery cells 4 can be provided within the storage space, ensuring that the arrangement of the liquid cooling plate 31 does not affect the installation space for the multiple battery cells 4 within the box. Furthermore, after the battery cells 4 are installed vertically in the mounting holes 23, both sides of the liquid cooling plate 31 can be disposed closely adjacent to the outer periphery of the battery cells 4. More specifically, because the liquid cooling plate 31 is disposed closely adjacent to the outer periphery of the battery cells 4, heat exchange can be performed between the battery cells 4 and the liquid cooling flow paths 33 of the liquid cooling plate 31 by circulating coolant through the liquid cooling channels 33 of the liquid cooling plate 31, thereby realizing the cooling effect of the battery cells 4 by liquid cooling.

[0032] 5 and 6 , in a preferred technical solution of this embodiment, a sealant 5 is further provided in the accommodating space of the box, and the sealant 5 is provided between two adjacent battery cells 4, between the battery cell 4 and the liquid-cooling plate 31, and between the battery cell 4 and the housing 1. In particular, when assembling, a processing jig is used to first process and form the relief passage 21 and the liquid-cooling passage 22 in the bottom tray structure 2, and then the bottom tray structure 2 is fixedly attached to one side of the housing 1 by a method such as welding, and then the liquid-cooling component 3 and the battery cell 4 are assembled. Finally, the accommodating space enclosed by the housing 1 and the bottom tray structure 2 is filled with liquid sealant 5. The sealant 5 flows into the gaps between two adjacent battery cells 4, the gaps between the battery cell 4 and the liquid-cooling plate 31, and the gaps between the battery cell 4 and the housing 1. After the sealant 5 solidifies, it can fix the liquid-cooling component 3, the battery cell 4, and other components inside the box, and the structural design is simple and reasonable. More specifically, the sealant 5 referred to in the present application preferably employs a polyurethane material or an epoxy resin material.

[0033] Furthermore, in one embodiment, the integrated battery further includes a cover (not shown) fixedly attached to the side of the housing 1 remote from the bottom tray structure 2, thereby forming the accommodating space between the housing 1, the bottom tray structure 2, and the cover. Specifically, after the sealant 5 inside the box is filled and cooled and solidified, the cover is fixedly attached to the side of the housing 1 remote from the bottom tray structure 2 by welding or by screw, bolt, or screw connection, etc., so that the box of the present application can form a rectangular sealed structure, and the internal accommodating space is used to arrange the battery cells 4, the liquid-cooling components 3, and other electrical components and liquid-cooling components.

[0034] Example 2 In the second embodiment of the present application, based on the first embodiment, a specific structure and installation technical solution for the liquid-cooled component 3, the flow dividing plate 6 and the water inlet and outlet pipes 7 is provided.

[0035] As shown in FIG. 4 , in the technical solution of this embodiment, the number of liquid-cooled plates 31 is two or more (i.e., a plurality of plates are provided), and the liquid-cooled plates 31 are continuously bent along their horizontal extension direction to form multiple arc segments, ultimately resulting in the entire liquid-cooled plate 31 having a serpentine or U-shaped bent structure. The liquid-cooled plates 31 are spaced apart horizontally and preferably parallel to each other. Specifically, by continuously bending the liquid-cooled plate 31 to form arc segments, the arc segments are positioned closer to the outer periphery of the battery cells 4, increasing the contact heat exchange area between the liquid-cooled plate 31 and the battery cells 4 and further improving the liquid-cooled cooling effect on the battery cells 4. Meanwhile, the liquid-cooled plate 31 provides a double-sided cooling effect to the battery cells 4 on both sides, further reducing the temperature difference between the battery cells 4 on both sides of the liquid-cooled plate 31 and improving the temperature uniformity of the multiple battery cells 4.

[0036] 1 and 4, in one alternative technical solution of this embodiment, the liquid-cooled component 3 further includes a collecting cavity 32, the collecting cavity being provided within the collecting cavity, and the multiple liquid-cooled channels 33 within the liquid-cooled plate 31 are connected in sequence, and the liquid-cooled channels 33 are connected to the liquid-cooled passages 22 via the collecting cavity. Here, the liquid-cooled channels 22 within the bottom tray structure 2, the collecting cavity within the collecting cavity within the collecting cavity within the collecting cavity within the liquid-cooled plate 31, and the liquid-cooled channels 33 within the liquid-cooled plate 31 combine to form a liquid-cooled circulation system. The collecting cavity within the collecting cavity within the collecting cavity within the liquid-cooled circulation system is provided between the bottom tray structure 2 and the liquid-cooled plate 31, so that the cooling water within the multiple liquid-cooled channels 33 can be concentrated and introduced into the liquid-cooled passages 22 via the collecting cavity, and the cooling water within the liquid-cooled channels 22 can be dispersed and introduced into the multiple liquid-cooled channels 33 via the collecting cavity. More specifically, in the fluid collection section 32, a water inlet / outlet port 34 including a water inlet and a water outlet is provided on the side facing the bottom tray structure 2, and the cooling water in the liquid cooling passage 22 flows into the collection cavity through this water inlet and then flows into the liquid cooling flow path 33, and the cooling water that has completed heat exchange in the liquid cooling flow path 33 flows into the collection cavity through this water outlet and then flows into the liquid cooling passage 22, and in this way a liquid cooling circulation is formed, and the cooling effect of liquid cooling on the battery cells 4 is realized.

[0037] 2 and 5, in another alternative technical solution of this embodiment, the integrated battery module further includes a water distribution plate 6 and a water inlet / outlet pipe 7. The water distribution plate 6 has a water inlet cavity and a water outlet cavity that are isolated from each other. The water inlet / outlet pipe 7 includes a water inlet pipe and a water outlet pipe. The water inlet pipe communicates with the liquid cooling passage 22 through the water inlet cavity, and the water outlet pipe communicates with the liquid cooling passage 22 through the water outlet cavity. The water inlet cavity and water outlet cavity in the water distribution plate 6, the water inlet / outlet pipe 7, and the liquid cooling passage 22 in the bottom tray structure 2 combine to form a liquid cooling circulation system. Specifically, because multiple liquid cooling passages 22 are provided inside the bottom tray structure 2, providing a number of water inlet / outlet pipes 7 corresponding to the liquid cooling passages 22 would significantly increase material costs and occupy a large installation space inside the box. Therefore, in this application, the water inlet and outlet pipes 7 and the bottom tray structure 2 are provided with a diverter plate 6, and the water inlet and outlet pipes 7 are connected to external piping. This allows the external cooling water to be uniformly introduced into the diverter plate 6 through the water inlet pipes and distributed to each liquid cooling passage 22 through the water inlet cavities in the diverter plate 6. After the cooling water flows into each liquid cooling passage 22, it flows back into the water outlet pipes via the water outlet cavities in the diverter plate 6 after completing the liquid cooling circulation, and finally flows out through the water outlet pipes, thereby completing the liquid cooling circulation. This has a simple and reasonable structural design and significantly reduces production costs.

[0038] Example 3 In the third embodiment of the present application, based on the first embodiment, a specific structure and installation technical solution for the BMS component 8 and the BDU component 9 is provided.

[0039] As shown in Figure 5, in the technical solution of this embodiment, the integrated battery module further includes a BMS component 8 and a BDU component 9, which are both installed in the housing space. Here, the BMS component 8 and the BDU component 9 are both liquid cooling devices for high-heat-generating electrical components arranged in a box. Through the structural design of the bottom tray structure 2 and the liquid-cooling component 3 in this application, installation space can be provided for the BMS component 8 and the BDU component 9 in the housing space, and the problem of liquid cooling for high-heat-generating electrical components can be solved.

[0040] 2 and 5 , in one preferred technical solution of this embodiment, a beam 12 is fixedly connected to the interior of the housing 1, and a liquid-cooled plate 31 is fixedly attached to the beam 12, thereby enabling the liquid-cooled components 3 to be assembled and connected inside the box. In one embodiment, the battery cells 4 and the liquid-cooled components 3, and the BMS components 8 and the BDU components 9 are respectively provided on both sides of the beam 12, i.e., the battery cells 4 and the liquid-cooled components 3 are provided on one side of the beam 12, and the BMS components 8 and the BDU components 9 are provided on the other side of the beam 12. Specifically, the beam 12 can provide structural support for the liquid-cooled components 3, and by separating the accommodating space where the battery cells 4 and the liquid-cooled components 3 are located from the accommodating space where the BMS components 8 and the BDU components 9 are located, the beam 12 can ensure that the accommodating space where the accommodating material 5 is located does not flow into the BMS components 8 and the BDU components 9 during the process of injecting the accommodating material 5 into the box, thereby avoiding damage to the BMS components 8 and the BDU components 9.

[0041] More specifically, the BMS (Battery Management System) component 8 described in this application is a battery management system component whose role is to intelligently manage and maintain each unit in the battery and prevent phenomena such as battery overcharging or over-discharging, thereby extending the battery's service life, monitoring the battery, etc. The BDU (Battery Energy Distribution Unit) component 9 described in this application is a battery energy distribution unit component, which is an important part of the high-voltage circuit of an electric vehicle, and controls the on / off process, pre-charge process, and charging process of the high-voltage electrical circuit, and has an important impact on the service life, control strategy, and high-voltage electrical safety of the electric vehicle.

[0042] As can be seen from the above, in the integrated battery module provided by the present application, a bottom tray structure 2 is provided on one side of the housing 1, and the bottom tray structure 2 is provided with at least one relief passage 21 and at least one liquid cooling passage 22. The relief passage 21 communicates with the explosion-proof valve 11 through a cavity in the housing 1, and the liquid cooling passage 22 communicates with the liquid cooling channel 33 of the liquid cooling plate 31. This structural design allows the bottom protection plate, battery cell tray, relief passage, and other structures of a conventional battery module to be integrated into the bottom tray structure 2. This integrated structural design avoids the need for a relatively thin bottom protection plate and the need for a sealing design between the bottom protection plate and the battery cell tray, resulting in a simple and rational structure, a simplified installation process, and a significant reduction in manufacturing costs. The structural strength of the entire bottom tray structure 2 and the sealing performance of the relief passage 21 can also be improved. Furthermore, by eliminating the need for a liquid-cooled piping structure in a conventional battery module and instead realizing liquid cooling of the battery cells 4 via the liquid-cooled passages 22 in the bottom tray structure 2 and the liquid-cooled channels 33 in the liquid-cooled plate 31, the installation space inside the box is significantly saved, and in addition to realizing relief and liquid cooling functions in the event of thermal runaway of the battery module, it also provides design space for liquid cooling devices for other high-heat-generating electrical components inside the box, solving the problem of liquid cooling of high-heat-generating electrical components. [Explanation of symbols]

[0043] (1) Housing, (11) Explosion-proof valve, (12) Beam, (2) Bottom tray structure, (21) Relief passage, (22) Liquid cooling passage, (23) Mounting hole, (3) Liquid cooling component, (31) Liquid cooling plate, (32) Fluid collection, (33) Liquid cooling flow path, (34) Water inlet and outlet, (4) Battery cell, (5) Sealant, (6) Flow divider plate, (7) Second water inlet and outlet pipe, (8) BMS component, (9) BDU component.

Claims

1. An integrated battery module, a box including a housing (1) and a bottom tray structure (2), the bottom tray structure (2) being fixedly attached to one side of the housing (1), an explosion-proof valve (11) being provided on the outer periphery of the housing (1), a cavity being provided inside the housing (1) and communicating with the explosion-proof valve (11), the bottom tray structure (2) being provided with at least one relief passage (21) and at least one liquid cooling passage (22), the relief passage (21) communicating with the explosion-proof valve (11) through the cavity; a liquid-cooled component (3) including a liquid-cooled plate (31) provided in an accommodating space surrounded by the housing (1) and the bottom tray structure (2), the liquid-cooled plate (31) having at least one liquid-cooled flow path (33) provided therein, the liquid-cooled flow path (33) communicating with the liquid-cooled passage (22); a plurality of battery cells (4), the plurality of battery cells (4) being spaced apart and provided in the storage space; Integrated battery module.

2. The bottom tray structure (2) has a plurality of mounting holes (23) on its side facing the storage space, the storage space communicates with the relief passage (21) through the mounting holes (23), and the battery cells (4) are installed in the mounting holes (23). The integrated battery module according to claim 1 .

3. The liquid cooling plate (31) and the bottom tray structure (2) are arranged perpendicular to each other, and both sides of the liquid cooling plate (31) are closely arranged with the outer periphery of the battery cell (4). The integrated battery module according to claim 1 .

4. A sealant (5) is further provided in the storage space, and the sealant (5) is provided between two adjacent battery cells (4), between the battery cell (4) and the liquid cooling plate (31), and between the battery cell (4) and the housing (1). The integrated battery module according to claim 2 or 3.

5. The device further includes a cover fixedly attached to a side of the housing (1) farther from the bottom tray structure (2), thereby forming the storage space between the housing (1), the bottom tray structure (2), and the cover. The integrated battery module according to claim 4 .

6. The number of the liquid-cooled plates (31) is two or more, and the liquid-cooled plates (31) are continuously bent along their horizontal extension direction to form a plurality of arc segments. The integrated battery module according to claim 1 .

7. The liquid-cooled component (3) further includes a collecting fluid (32), a collecting cavity is provided inside the collecting fluid (32), the plurality of liquid-cooled flow paths (33) inside the liquid-cooled plate (31) are sequentially connected to each other, and the liquid-cooled flow paths (33) are connected to the liquid-cooled passages (22) via the collecting cavity. The integrated battery module according to claim 6 .

8. The cooling system further includes a flow divider plate (6) and water inlet and outlet pipes (7), wherein the flow divider plate (6) has an inlet cavity and an outlet cavity that are isolated from each other, and the water inlet and outlet pipes (7) include a water inlet pipe communicating with the liquid cooling passage (22) through the water inlet cavity and a water outlet pipe communicating with the liquid cooling passage (22) through the water outlet cavity. The integrated battery module according to claim 6 .

9. The system further includes a BMS component (8) and a BDU component (9), wherein the BMS component (8) and the BDU component (9) are both provided in the storage space. The integrated battery module according to claim 1 .

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