Battery module device

Abstract

The utility model provides a battery module device, which belongs to the technical field of battery manufacturing, and comprises an upper cover structure, a battery module and a bottom plate structure, the bottom plate structure comprises a liquid cooling runner plate and a frame, and one end of the liquid cooling runner plate is provided with a water inlet water nozzle and a water outlet water nozzle; the frame is annularly arranged on the edge of the liquid cooling runner plate, at least one notch is formed in the frame, and the water inlet water nozzle and the water outlet water nozzle are correspondingly arranged in the notch; the upper cover structure comprises an upper cover, the upper cover covers the liquid cooling runner plate and is detachably connected with the frame, so that a containing part for containing the battery module is formed between the upper cover and the liquid cooling runner plate, a cold liquid pipe containing groove is formed in the upper cover, and the cold liquid pipe containing groove is opposite to the notch so as to contain the cold liquid pipeline. And the structure of the battery module device is more compact.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and more particularly to a battery module device. Background Technology

[0002] With the increasing popularity of electric vehicles, charging demand is constantly rising. Battery module integrated systems can balance grid load and reduce the impact of charging stations on the grid, thus possessing good market potential. A battery module consists of multiple battery cells, integrated through connectors and a management system, and is protected by a casing.

[0003] However, due to space constraints, most charging stations have stricter requirements on the size of battery modules. Existing battery modules occupy a large volume, which cannot store more energy density in a smaller space and cannot increase the equipment's range or efficiency.

[0004] Therefore, there is a lack of compact battery module devices in the existing technology. Utility Model Content

[0005] This application provides a battery module device to solve the problem that the structure of existing battery module devices is not compact enough.

[0006] This application provides a battery module device, including an upper cover structure, a battery module, and a base plate structure;

[0007] The base plate structure includes a liquid-cooled flow channel plate and a frame. The liquid-cooled flow channel plate has a cavity for holding coolant. One end of the liquid-cooled flow channel plate is provided with an inlet nozzle and an outlet nozzle. The inlet nozzle and the outlet nozzle are used to connect to the coolant pipeline that supplies coolant.

[0008] The frame is arranged around the edge of the liquid-cooled flow channel plate, and the frame has at least one notch. The inlet nozzle and the outlet nozzle are respectively arranged in the notch.

[0009] The upper cover structure includes an upper cover that covers the liquid cooling channel plate and is detachably connected to the frame to form a receiving part for accommodating the battery module between the upper cover and the liquid cooling channel plate. The upper cover is provided with a coolant pipe receiving groove that is opposite to the notch to receive the coolant pipe.

[0010] In one possible implementation, the battery module device provided in this application includes a frame comprising a first frame, a second frame, a third frame, and a fourth frame of equal height.

[0011] The first border and the second border are arranged opposite to each other, and the third border and the fourth border are arranged opposite to each other;

[0012] The first frame includes two connecting blocks and a protruding block. The two connecting blocks are symmetrically arranged on both sides of the protruding block. One end of the connecting block is connected to the protruding block, and the other end of the connecting block abuts against the third frame or the fourth frame. The width of the connecting block is smaller than the width of the protruding block, so as to form the notch at the connection between the connecting block and the protruding block.

[0013] In one possible implementation, the battery module device provided in this application further includes a support beam, a fixing screw, and a strap. There are at least two support beams, which are symmetrically arranged in the receiving part. The height of the support beam is less than the height of the frame. The battery module is disposed in the space formed by the support beam and the frame. The support beam has a plurality of screw fixing holes.

[0014] The fixing screw is threaded to the support beam through the screw fixing hole. At least one fixing screw is provided on each of the four sides of the battery module, and the fixing screw is in contact with the surface of the battery module.

[0015] The straps are used to limit the relative position of the fixing screw and the battery module, thereby fixing the battery module to the liquid-cooled flow channel plate.

[0016] In one possible implementation, the battery module device provided in this application has the first frame and the second frame integrally formed with the support beam, and the third frame and the fourth frame integrally formed with the liquid cooling flow channel plate.

[0017] In one possible implementation, the battery module device provided in this application has a connector mounting portion on the upper cover, which is used to mount a high-voltage connector and a low-voltage connector.

[0018] The top cover is also equipped with a vent valve, which is used to balance the pressure difference between the inside and outside of the receiving part.

[0019] In one possible implementation, the battery module device provided in this application includes a series busbar, an output busbar, a slave control module, and at least one set of sub-battery modules. Adjacent sub-battery modules are closely fitted together. The series busbar connects the positive and negative terminals of adjacent sub-battery modules, connecting them in series. The output busbar is electrically connected to the output terminal of the sub-battery module and the high-voltage connector. The slave control module is mounted on the protrusion via a mounting bracket and is electrically connected to the sub-battery modules, the high-voltage connector, and the low-voltage connector.

[0020] In one possible implementation, the battery module device provided in this application has the connector mounting portion mounted on the top position of the side of the upper cover having the coolant pipe receiving groove;

[0021] The upper cover has a front maintenance window and a top maintenance window. The front maintenance window is located on the side of the upper cover and corresponds to the position of the slave control module. The top maintenance window is located on the top of the upper cover and corresponds to the position of the output busbar.

[0022] The front maintenance window and the top maintenance window are covered with removable maintenance panels.

[0023] In one possible implementation, the battery module device provided in this application has a sealing skirt at the bottom of the upper cover, the lower surface of the sealing skirt being attached to the upper surface of the frame, and the sealing skirt being connected to the frame by bolts.

[0024] In one possible implementation, the battery module device provided in this application has a seal between the sealing skirt and the frame.

[0025] In one possible implementation, the battery module device provided in this application has insulating elements attached around the output busbar, the series busbar, and the slave control module.

[0026] This application provides a battery module device that, by providing a notch and a coolant pipe storage groove, makes full use of the space inside and outside the top cover, allowing the coolant pipes to be stored in this location, preventing the coolant pipes from being exposed outside the battery module structure, and avoiding the use of extra space outside the battery module device for the coolant pipes; by installing inlet and outlet water nozzles at the notch, the inlet and outlet water nozzles are prevented from protruding outside the battery module device, thus avoiding the need to reserve space for the installation of inlet and outlet water nozzles. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0028] Figure 1 This is a schematic diagram of the battery module device provided in this embodiment;

[0029] Figure 2 This application provides a schematic diagram of the upper cover structure of the battery module device.

[0030] Figure 3 This is a schematic diagram of the base plate structure of the battery module device provided in this embodiment;

[0031] Figure 4 for Figure 1 Enlarged view of section A;

[0032] Figure 5 for Figure 1 Enlarged view of section B.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Top cover structure; 101. Top cover; 110. Coolant pipe storage tank; 120. Connector mounting part; 130. High-voltage connector; 140. Low-voltage connector; 150. Front maintenance window; 160. Top maintenance window; 170. Vent valve; 180. Sealing skirt; 181. Top cover fixing screw holes; 190. Top cover limiting component;

[0035] 200. Battery module; 210. Sub-battery module; 211. Fixing plate; 220. Series busbar; 230. Output busbar; 240. Slave control module; 241. Mounting bracket;

[0036] 300. Base plate structure; 301. Frame screw holes; 310. Liquid cooling flow channel plate; 320. First frame; 321. Connecting block; 322. Protruding block; 330. Second frame; 340. Third frame; 350. Fourth frame; 361. Support beam; 3611. Screw fixing hole; 362. Fixing screw; 363. Strapping; 370. Water inlet nozzle; 380. Water outlet nozzle; 391. Anti-collision component; 392. Base plate limiting hole; 293. Lifting structure;

[0037] 400. Seals;

[0038] 500. Insulating components.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. In embodiments of this application, the words "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0042] As mentioned in the background section, battery module devices are crucial for the development of charging technology. A battery module device consists of multiple battery cells and is integrated through connectors and a management system.

[0043] Due to space constraints, the size requirements for battery module devices are more stringent. Reducing the size of battery module devices allows more energy density to be stored in a smaller space, thereby increasing the device's range or efficiency.

[0044] Existing battery module structures typically use coolant for heat dissipation, and coolant pipelines are generally used to guide the coolant to the battery module device. Therefore, the installation environment of the battery module structure needs to reserve space for the coolant pipeline, resulting in the battery module device structure not being compact enough.

[0045] Therefore, it is particularly important to find a solution to the problem of the battery module device's insufficiently compact structure.

[0046] To address the aforementioned technical problems, this application provides a battery module device that, by providing a notch and a coolant pipe storage groove 110, fully utilizes the space inside and outside the upper cover 101, allowing the coolant pipes to be stored in this location, preventing the coolant pipes from being exposed outside the battery module device, and avoiding the use of extra space outside the battery module device for the coolant pipes; by installing an inlet nozzle 370 and an outlet nozzle 380 at the notch, the inlet nozzle 370 and outlet nozzle 380 are prevented from protruding outside the battery module device, thus avoiding the need to reserve space for the installation of the inlet nozzle 370 and outlet nozzle 380.

[0047] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0048] like Figure 1 As shown in the figure, this application discloses a battery module device, including an upper cover structure 100, a battery module 200 and a base plate structure 300.

[0049] The base plate structure 300 includes a liquid-cooled flow channel plate 310 and a frame. The liquid-cooled flow channel plate 310 has a cavity for holding coolant. One end of the liquid-cooled flow channel plate 310 is provided with an inlet nozzle 370 and an outlet nozzle 380. The inlet nozzle 370 and the outlet nozzle 380 are used to connect to the coolant pipeline for supplying coolant.

[0050] The frame is arranged around the edge of the liquid cooling flow channel plate 310, and the frame has at least one notch. The inlet nozzle 370 and the outlet nozzle 380 are respectively arranged in the notch.

[0051] The upper cover structure 100 includes an upper cover 101, which covers the liquid cooling channel plate 310 and is detachably connected to the frame to form a receiving part for accommodating the battery module 200 between the upper cover 101 and the liquid cooling channel plate 310. The upper cover 101 is provided with a coolant pipe receiving groove 110, which is opposite to the notch to receive coolant pipes.

[0052] By adopting the above technical solution, and by setting a notch and a coolant pipe storage slot 110, the internal and external space of the upper cover 101 is fully utilized, so that the coolant pipe can be stored in this position, avoiding the coolant pipe being exposed outside the battery module device, and making the overall size of the battery module device structure more compact.

[0053] The battery module 200 generates a large amount of heat during charging and discharging. The coolant in the liquid cooling channel plate 310 can effectively dissipate the heat from the battery module 200, preventing the battery from overheating and maintaining its stability.

[0054] like Figure 3 As shown, in some embodiments, the border includes a first border 320, a second border 330, a third border 340, and a fourth border 350 of equal height.

[0055] The first border 320 and the second border 330 are set relative to each other, and the third border 340 and the fourth border 350 are set relative to each other.

[0056] The first frame 320 includes two connecting blocks 321 and a protrusion 322. The two connecting blocks 321 are symmetrically arranged on both sides of the protrusion 322. One end of the connecting block 321 is connected to the protrusion 322, and the other end of the connecting block 321 abuts against the third frame 340 or the fourth frame 350. The width of the connecting block 321 is smaller than the width of the protrusion 322, so as to form a notch at the connection between the connecting block 321 and the protrusion 322.

[0057] Among them, the first border 320 and the second border 330 are of equal length, and the third border 340 and the fourth border 350 are of equal length.

[0058] By adopting the above technical solution, using connecting blocks 321 and protrusions 322 of different widths, the inlet nozzle 370 and outlet nozzle 380 are installed with exposed notches, avoiding the inlet nozzle 370 and outlet nozzle 380 from protruding outside the battery module device, thus making the overall size of the battery module device more compact.

[0059] For example, the first frame 320 is fixed to the top surface of the liquid cooling flow channel plate 310 near the end of the inlet nozzle 370 and the outlet nozzle 380, the second frame 330 is fixed to the top surface of the upper cover 101 away from the end of the inlet nozzle 370 and the outlet nozzle 380, a third frame 340 is connected between the ends of the first frame 320 and the second frame 330 on the same side, and a fourth frame 350 is connected between the ends of the first frame 320 and the second frame 330 on the other side.

[0060] In some embodiments, this application further includes a support beam 361, a fixing screw 362, and a strap 363. There are at least two support beams 361, which are symmetrically arranged in the receiving part. The height of the support beam 361 is less than the height of the frame. The battery module 200 is disposed in the space formed by the support beam 361 and the frame. The support beam 361 is provided with a plurality of screw fixing holes 3611.

[0061] The fixing screw 362 is threadedly connected to the support beam 361 through the screw fixing hole 3611. At least one fixing screw 362 is provided on each of the four sides of the battery module 200, and the fixing screw 362 is in contact with the surface of the battery module 200.

[0062] The strap 363 is used to limit the relative position of the fixing screw 362 and the battery module 200, thereby fixing the battery module 200 on the liquid cooling flow channel plate 310.

[0063] By adopting the above technical solution, using connecting blocks 321 and protrusions 322 of different widths, the inlet nozzle 370 and outlet nozzle 380 are installed with exposed notches, avoiding the inlet nozzle 370 and outlet nozzle 380 from protruding outside the battery module device, thus making the overall size of the battery module device more compact.

[0064] The length of the support beam 361 is the same as that of the first frame 320 and the second frame 330.

[0065] The support beam 361 has multiple screw fixing holes 3611, the threads of the screw fixing holes 3611 are adapted to the support beam 361, and the fixing screw 362 is threadedly connected to the support beam 361.

[0066] For example, strap 363 is made of steel, but it can also be made of nylon.

[0067] It is understandable that as long as the strap 363 can fix the battery module 200, the specific material of the strap 363 is not limited in this embodiment.

[0068] By utilizing the external shape of the battery module 200 through the cooperation of the support beam 361, fixing screw 362, and strap 363, the battery module 200 is securely fixed to the base plate structure 300, while avoiding the waste of space by the fixing components.

[0069] For example, the first frame 320 and the second frame 330 are integrally formed with the support beam 361, and the third frame 340 and the fourth frame 350 are integrally formed with the liquid cooling flow channel plate 310.

[0070] It is understood that the first frame 320, the second frame 330, the third frame 340, the fourth frame 350 and the liquid cooling flow channel plate 310 can also be formed separately and then assembled and fixed. This application embodiment does not limit how the first frame 320, the second frame 330, the third frame 340, the fourth frame 350 and the liquid cooling flow channel plate 310 are formed.

[0071] It should be noted that the liquid cooling channel plate 310, the first frame 320, the second frame 330, the third frame 340, and the fourth frame 350 are formed by extruding aluminum profiles. The liquid cooling channel plate 310 has filling holes left by the forming of aluminum profiles. In order to maintain the sealed environment of the cavity of the liquid cooling channel plate 310, the filling holes are sealed with plugs.

[0072] Extruded aluminum profiles are aluminum products made by heating aluminum alloy to a certain temperature and pressing it into a profile mold to form a specific cross-sectional shape through an extrusion process. This manufacturing method allows aluminum alloys to be produced in various complex cross-sectional shapes and sizes, and is widely used in industries such as construction, transportation, electronics, and aerospace.

[0073] By using the above technical solution, the first frame 320, the second frame 330 are integrated with the support beam 361, and the third frame 340, the fourth frame 350 are integrated with the liquid cooling flow channel plate 310, making the connection between the components tighter. It can also reduce the number of extruded aluminum profile mold parts, reduce costs, and reduce the amount of welding, thereby improving the welding yield.

[0074] like Figure 2 and Figure 4 As shown, in some embodiments, the top cover 101 has a connector mounting portion 120 for mounting a high-voltage connector 130 and a low-voltage connector 140.

[0075] A vent valve 170 is also installed on the top cover 101. The vent valve 170 is used to balance the pressure difference between the inside and outside of the containment.

[0076] Furthermore, the sub-battery modules 210 are fixed together by fixing pieces 211.

[0077] It should be noted that the high-voltage connector 130 is used to connect to the main circuit of the sub-battery module 210, transmitting the high-voltage output of the sub-battery module 210 to the electric motor of the electric vehicle or other high-power loads.

[0078] Low-voltage connector 140 is typically used to transmit monitoring signals, temperature sensor data, and control signals from individual cells of each sub-battery module 210. These signals are crucial for the battery management system (BMS) to help monitor and manage the battery's status and performance.

[0079] like Figure 1 and Figure 5 As shown, in some embodiments, the battery module 200 includes a series busbar 220, an output busbar 230, a slave control module 240, and at least one set of sub-battery modules 210. Adjacent sub-battery modules 210 are closely fitted together. The series busbar 220 connects the positive and negative terminals of adjacent sub-battery modules 210, so that adjacent sub-battery modules 210 are connected in series. The output busbar 230 is electrically connected to the output terminal of the sub-battery module 210 and the high-voltage connector 130. The slave control module 240 is mounted on the protrusion 322 through the mounting bracket 241. The slave control module 240 is electrically connected to the sub-battery module 210, the high-voltage connector 130, and the low-voltage connector 140.

[0080] It is important to understand that the series busbar 220 is the main conductive path of the sub-battery module 210. The series busbar 220 ensures a stable and reliable electrical connection between the individual sub-battery modules 210, thereby forming the overall battery module system. The series busbar 220 not only connects the individual sub-battery modules 210, but also distributes the total voltage of the individual sub-battery modules 210 in series to the entire battery module system. This is very important for maintaining the voltage balance and stability of the overall battery module system.

[0081] The output busbar 230 is a key component that outputs the internal electrical energy of the sub-battery module 210 to the external system. The output busbar 230 is responsible for power output, voltage regulation, current transmission and system integration interface.

[0082] The slave control module 240 is responsible for monitoring important parameters such as voltage, current, and temperature of the sub-battery module 210. It typically collects these data in real time through sensors and performs analysis and processing to ensure that the sub-battery module 210 operates within a safe range of electrical parameters.

[0083] In some embodiments, the connector mounting portion 120 is mounted on the top position of the side of the upper cover 101 having the coolant pipe receiving groove 110.

[0084] The top cover 101 has a front maintenance window 150 and a top maintenance window 160. The front maintenance window 150 is located on the side of the top cover 101 and corresponds to the position of the slave control module 240. The top maintenance window 160 is located on the top of the top cover 101 and corresponds to the position of the output busbar 230.

[0085] The front maintenance window 150 and the top maintenance window 160 are covered with removable maintenance panels.

[0086] The connector mounting part 120 is a mounting hole.

[0087] By using the above technical solution, the front maintenance window 150 and the top maintenance window 160 have maintenance panels. The maintenance panels are fixed to the front maintenance window 150 and the top maintenance window 160 with bolts. During maintenance, the maintenance panels can be removed by unscrewing the bolts to expose the maintenance position, avoiding the situation where the maintenance panel needs to be flipped up for maintenance due to insufficient space, but cannot be opened. At the same time, the installation distance between battery module devices can be reduced.

[0088] The connector mounting part 120 is directly mounted on the top cover 101, which facilitates the inspection of the output busbar 230 and the high-voltage connector 130 through the top maintenance window 160. This saves on the adapter structure for high-voltage connector installation and further compresses the space in the depth direction.

[0089] The front maintenance window 150 and the top maintenance window 160 are positioned such that when installing the battery module 200, the front maintenance window 150 can be opened to install the slave control module 240; and the top maintenance window 160 can be opened to install the high-voltage connector 130 and the output busbar 230, improving the installation efficiency of the device. At the same time, the high-voltage connector 130 can be directly installed on the top cover 101 and maintained through the top maintenance window 160, saving the adapter structure of the high-voltage connector 130 and further compressing the space in the depth direction.

[0090] Furthermore, the front maintenance window 150, the top maintenance window 160, and the maintenance panel are connected with sealing strips to ensure the sealing of the receiving part.

[0091] In some embodiments, the bottom of the top cover 101 has a sealing skirt 180, the lower surface of the sealing skirt 180 is in contact with the upper surface of the frame, and the sealing skirt 180 is connected to the frame by bolts.

[0092] Furthermore, the sealing skirt 180 has multiple upper cover fixing screw holes 181, and the first frame 320, second frame 330, third frame 340 and fourth frame 350 have multiple frame screw holes 301; when the sealing skirt 180 is attached to the frame, the upper cover fixing screw holes 181 and the frame screw holes 301 are positioned accordingly; the upper cover 101 and the base plate structure 300 are fixed together by bolts through the corresponding upper cover fixing screw holes 181 and frame screw holes 301.

[0093] Furthermore, the upper cover 101 has an upper cover limiting member 190, which is used to cooperate with a hand member of the external installation environment for fixing the battery module device, thereby fixing the battery module device.

[0094] Furthermore, adjacent sub-battery modules 210 are fixed together by a top fixing piece 211. The fixing piece 211 is connected by threads at both ends to the two adjacent sub-battery modules 210.

[0095] Understandably, during use, thermally conductive structural adhesive is first evenly applied to the liquid-cooled flow channel plate 310 so that the heat generated by the sub-battery module 210 during use can be carried away by the coolant in time.

[0096] Then place the sub-battery module 210 on the liquid-cooled flow channel plate 310, and connect the series busbar 220 to the positive and negative terminals of the sub-battery module 210, so that the sub-battery modules 210 are connected in series.

[0097] The fixing screws 362 are attached to the four corners of the battery module system composed of sub-battery modules 210. The bottom of the fixing screws 362 is threaded to the screw fixing holes 3611. The fixing screws 362 are used to surround the battery module and the fixing screws 362, so that they are fixed on the liquid cooling flow channel plate 310.

[0098] Align the sealing skirt 180 of the top cover 101 with the frame of the base plate structure 300, and use bolts to pass through the corresponding top cover fixing screw holes 181 and frame screw holes 301 to fix the top cover 101 to the base plate structure 300.

[0099] The high-voltage connector 130, low-voltage connector 140, and vent valve 170 are fixed to the top cover 101, and the high-voltage connector 130 and low-voltage connector 140 are inserted into the connector mounting part 120.

[0100] The slave control module 240, high-voltage connector 130, and output busbar 230 are installed through the front maintenance window 150 and the top maintenance window 160. The output busbar 230 connects the sub-battery module 210 to the high-voltage connector 130. After installation, sealing strips are affixed around the front maintenance window 150 and the top maintenance window 160. The maintenance panel is then installed on the front maintenance window 150 and the top maintenance window 160 to create a sealed environment inside the top cover 101.

[0101] In some embodiments, a seal 400 is provided between the sealing skirt 180 and the frame.

[0102] Among them, the sealing element 400 can be a rubber sealing strip.

[0103] It is understood that as long as the seal 400 can achieve the seal between the sealing skirt 180 and the frame, the specific material of the seal 400 is not limited in this application embodiment.

[0104] Furthermore, at least one pair of anti-collision members 391 are installed at the four corners of the first frame 320 and the second frame 330. There can be two sets of anti-collision members 391, with each set containing two anti-collision members 391. The anti-collision members 391 are used to prevent damage caused by collisions between the battery module device and the installation environment during installation.

[0105] The anti-collision component 391 can be a protrusion structure. As long as the anti-collision component 391 can prevent the battery module device from colliding with the installation environment during installation, the specific structure of the anti-collision component 391 is not limited in this application embodiment.

[0106] Furthermore, the third frame 340 and the fourth frame 350 have bottom plate limiting holes 392 for engaging with the hands in the installation environment to fix the battery module device.

[0107] Among them, the external installation environment is the mounting environment fixing component of the battery module device. As long as it can cooperate with the bottom plate limiting hole 392 for fixed connection, the specific structure of the bottom plate limiting hole 392 is not limited in this application embodiment.

[0108] Furthermore, the third frame 340 and the fourth frame 350 have a hoisting structure 393, which is the connection point between the battery module device and the transfer machine.

[0109] Among them, the insulating component 500 can be an insulating sheet made of PC material or an insulating sheet made of rubber.

[0110] It is understandable that as long as the insulating component 500 can reinforce the insulation of the weak points of the output busbar 230, the series busbar 220 and the slave control module 240, the specific material of the insulating component 500 is not limited in this embodiment.

[0111] PC (polycarbonate) insulation sheets are typically used as insulating materials in electronic devices or electrical components. PC has excellent electrical insulation properties, effectively preventing the flow of current and thus protecting electronic equipment from short circuits or electrical faults. PC also generally has high heat resistance, maintaining stable physical and insulating properties within a certain temperature range, making it suitable for environments requiring long-term stable operation.

[0112] Insulating component 500 is affixed to the weak insulation locations of output busbar 230, series busbar 220 and slave control module 240, such as around output busbar 230, series busbar 220 and slave control module 240 or at mounting bracket 241.

[0113] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0114] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0115] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0116] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0117] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery module device, characterized in that, It includes a top cover structure (100), a battery module (200), and a bottom plate structure (300); The base plate structure (300) includes a liquid-cooled flow channel plate (310) and a frame. The liquid-cooled flow channel plate (310) has a cavity for holding coolant. One end of the liquid-cooled flow channel plate (310) is provided with an inlet nozzle (370) and an outlet nozzle (380). The inlet nozzle (370) and the outlet nozzle (380) are used to connect to the coolant pipeline for supplying coolant. The frame is arranged around the edge of the liquid cooling flow channel plate (310), and the frame has at least one notch. The inlet nozzle (370) and the outlet nozzle (380) are respectively arranged in the notch. The upper cover structure (100) includes an upper cover (101), which covers the liquid cooling channel plate (310) and is detachably connected to the frame to form a receiving portion for accommodating the battery module (200) between the upper cover (101) and the liquid cooling channel plate (310). The upper cover (101) is provided with a coolant pipe receiving groove (110), which is opposite to the notch to receive the coolant pipe.

2. The battery module device according to claim 1, characterized in that, The border includes a first border (320), a second border (330), a third border (340), and a fourth border (350) of equal height; The first border (320) and the second border (330) are arranged opposite to each other, and the third border (340) and the fourth border (350) are arranged opposite to each other; The first frame (320) includes two connecting blocks (321) and a protrusion (322). The two connecting blocks (321) are symmetrically arranged on both sides of the protrusion (322). One end of the connecting block (321) is connected to the protrusion (322), and the other end of the connecting block (321) abuts against the third frame (340) or the fourth frame (350). The width of the connecting block (321) is smaller than the width of the protrusion (322) to form the notch at the connection between the connecting block (321) and the protrusion (322).

3. The battery module device according to claim 2, characterized in that, It also includes a support beam (361), a fixing screw (362), and a strap (363). There are at least two support beams (361), which are symmetrically arranged in the receiving part. The height of the support beam (361) is less than the height of the frame. The battery module (200) is arranged in the space formed by the support beam (361) and the frame. The support beam (361) has a plurality of screw fixing holes (3611). The fixing screw (362) is threadedly connected to the support beam (361) through the screw fixing hole (3611). At least one fixing screw (362) is provided on each of the four sides of the battery module (200), and the fixing screw (362) is in contact with the surface of the battery module (200). The strap (363) is used to limit the relative position of the fixing screw (362) and the battery module (200), thereby fixing the battery module (200) on the liquid cooling flow channel plate (310).

4. The battery module device according to claim 3, characterized in that, The first frame (320) and the second frame (330) are integrally formed with the support beam (361), and the third frame (340) and the fourth frame (350) are integrally formed with the liquid cooling flow channel plate (310).

5. The battery module device according to any one of claims 2-4, characterized in that, The upper cover (101) is provided with a connector mounting part (120), which is used to mount a high-voltage connector (130) and a low-voltage connector (140); The upper cover (101) is also equipped with a vent valve (170), which is used to balance the pressure difference between the inside and outside of the receiving part.

6. The battery module device according to claim 5, characterized in that, The battery module (200) includes a series busbar (220), an output busbar (230), a slave control module (240), and at least one set of sub-battery modules (210). The adjacent sub-battery modules (210) are closely fitted together. The series busbar (220) connects the positive and negative terminals of the adjacent sub-battery modules (210) to connect them in series. The output busbar (230) is electrically connected to the output terminal of the sub-battery module (210) and the high-voltage connector (130). The slave control module (240) is mounted on the protrusion (322) through a mounting bracket (241). The slave control module (240) is electrically connected to the sub-battery module (210), the high-voltage connector (130), and the low-voltage connector (140).

7. The battery module device according to claim 6, characterized in that, The connector mounting part (120) is mounted on the top position of the side of the upper cover (101) having the cold liquid pipe receiving groove (110); The upper cover (101) is provided with a front maintenance window (150) and a top maintenance window (160). The front maintenance window (150) is located on the side of the upper cover (101) and corresponds to the position of the slave control module (240). The top maintenance window (160) is located on the top of the upper cover (101) and corresponds to the position of the output busbar (230). The front maintenance window (150) and the top maintenance window (160) are covered with removable maintenance panels.

8. The battery module device according to any one of claims 6-7, characterized in that, The bottom of the top cover (101) has a sealing skirt (180), the lower surface of which is in contact with the upper surface of the frame, and the sealing skirt (180) is connected to the frame by bolts.

9. The battery module device according to claim 8, characterized in that, A seal (400) is provided between the sealing skirt (180) and the frame.

10. The battery module device according to any one of claims 6-7, characterized in that, Insulating elements (500) are attached around the output busbar (230), the series busbar (220) and the slave control module (240).

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