Battery module

Abstract

The application relates to the battery technical field, in particular to a battery module, which comprises a shell, a battery module and a battery management module, the inside of the shell is formed with a partition plate to separate the inside of the shell into a first installation space and a second installation space along a first preset direction, the battery module is arranged in the first installation space, and the battery management module is arranged in the second installation space. It can be seen that the electrical area and the battery area in the whole machine are effectively isolated, the risk of fire during thermal runaway is reduced, the explosion-proof valve is arranged in the battery area, gas can be quickly discharged, safety is improved, the structural strength of the whole machine is higher, the battery module in the inside is fixed firmly, the end-stage expansion of the battery can be absorbed and inhibited, the service life is improved, the heat dissipation performance of the whole machine is excellent, the rapid heat dissipation of the battery management module and the battery group during work is guaranteed, the performance and the service life are improved, the structure of the whole machine is compact, the structural parts are fewer, the process is simple, and installation and maintenance are convenient.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module. Background Technology

[0002] Currently, battery modules generally include a casing, a battery module, and a battery management module. The battery module and the battery management module are both installed inside the casing. In other words, the battery area and the electrical area are in the same space. Once the battery module experiences thermal runaway, it will cause the electrical area to catch fire, which greatly reduces the safety and reliability of the battery module. Utility Model Content

[0003] The purpose of this application is to provide a battery module that, to a certain extent, solves the technical problem in the prior art where the electrical area and the battery area are in the same space, and once the battery module experiences thermal runaway, the electrical area will catch fire, which greatly reduces the safety and reliability of the battery module.

[0004] This application provides a battery module, including: a housing, a battery module, and a battery management module; wherein, an isolation plate is formed inside the housing to divide the interior of the housing into a first installation space and a second installation space along a first preset direction, the battery module is disposed in the first installation space, and the battery management module is disposed in the second installation space.

[0005] In the above technical solution, the bottom wall of the outer casing is further provided with a heat dissipation protrusion located in the second mounting space, the battery management module is located above the heat dissipation protrusion, and a heat-conducting layer is provided between the two.

[0006] In any of the above technical solutions, the bottom wall of the housing is further provided with a plurality of support columns located in the second installation space, the battery management module is mounted on the top of the plurality of support columns and is detachably connected to the plurality of support columns through a plurality of first fastening components.

[0007] In any of the above technical solutions, a reinforcing rib is further provided on the side of the isolation plate near the second installation space.

[0008] In any of the above technical solutions, the number of reinforcing ribs is multiple, and they are arranged sequentially and evenly at intervals along the length direction of the partition plate, and each of the reinforcing ribs extends along the height direction of the partition plate.

[0009] In any of the above technical solutions, the outer shell further includes a limiting rib, which extends along a second preset direction perpendicular to the first preset direction and is located on one side within the first installation space. One sidewall of the battery module abuts against the limiting rib, and the remaining sidewalls of the battery module abut against the remaining sidewalls within the corresponding first installation space.

[0010] In any of the above technical solutions, the side wall of the limiting rib near the battery module is further inclined, and along the height direction of the outer shell and from bottom to top in a direction away from the battery module; the top corner of the side wall of the limiting rib near the battery module is formed with a guide rounded corner.

[0011] In any of the above technical solutions, the limiting rib is further formed on the bottom wall and the corresponding side wall of the outer shell.

[0012] In any of the above technical solutions, the battery module further includes an insulating plate, and the insulating plate is provided between the battery module and the side wall of the first installation space except for the side wall where the limiting rib is provided; the cover plate of the battery module near the limiting rib is made of insulating material.

[0013] In any of the above technical solutions, the battery module further includes multiple pouch cells, an insulating tab support, foam, multiple connectors, lead-out connectors, a sampling circuit board, and the cover plate; wherein, the multiple pouch cells are stacked sequentially along the first preset direction; along the second preset direction, the insulating tab support is disposed at one end of the stacked multiple pouch cells; The sampling circuit board, the connecting bar, and the lead-out bar are all mounted on the insulating tab support, and multiple soft-pack cells form a series or parallel structure through multiple connecting bars; the sampling circuit board is connected to multiple connecting bars; along the first preset direction, foam is provided on both opposite sides of the stacked multiple soft-pack cells; foam is also provided on the top of the stacked multiple soft-pack cells; the cover plate is provided on the side of the insulating tab support away from the cells.

[0014] In any of the above technical solutions, the battery module further includes an explosion-proof valve, which is installed on the housing and is disposed corresponding to the first installation space, and is connected to the first installation space.

[0015] In any of the above technical solutions, a thermally conductive structural adhesive is further provided between the battery module and the bottom wall of the outer casing.

[0016] In any of the above technical solutions, the isolation plate is further provided with an avoidance gap.

[0017] In any of the above technical solutions, the outer shell further includes a lower shell and an upper cover; wherein the lower shell has a lower flange, the upper cover has an upper flange, and the upper flange and the lower flange are abutted together along the height direction of the outer shell and are detachably connected by a second fastening member.

[0018] In any of the above technical solutions, the isolation plate is further provided with a mounting post, and the upper cover is detachably connected to the mounting post by a third fastening member.

[0019] In any of the above technical solutions, the lower shell and the isolation plate are integrally cast.

[0020] In any of the above technical solutions, the upper cover is further formed by casting.

[0021] In any of the above technical solutions, one of the upper flange and the lower flange is further provided with a mounting groove, the battery module further includes a sealing ring, the sealing ring is installed in the mounting groove, and the sealing ring is compressed between the upper flange and the lower flange.

[0022] In any of the above technical solutions, the lower shell is further provided with an auxiliary mounting post located below and connected to the lower flange, and the second fastening member is sequentially mounted on the upper flange, the lower flange and the auxiliary mounting post, and the side wall of the lower shell is provided with a recessed area to avoid the auxiliary mounting post.

[0023] Compared with the prior art, the beneficial effects of this application are as follows: (1) The electrical area and battery area in the whole machine are effectively isolated to reduce the risk of fire in case of thermal runaway. At the same time, the battery area is equipped with an explosion-proof valve, which can quickly release gas and improve safety.

[0024] (2) The machine has a compact structure, fewer structural parts, simple process, convenient installation and maintenance, and low cost; (3) The overall structure is strong and the internal battery module is firmly fixed, which can absorb and suppress the battery's late-stage expansion and improve its lifespan. (4) The overall heat dissipation performance is excellent, ensuring rapid heat dissipation of the battery management module and battery pack during operation, thereby improving performance and lifespan; (5) The sealing structure of the whole machine is reliable and can achieve, for example, IP67 rating. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 An exploded view of the battery module provided in an embodiment of this application; Figure 2 An assembly diagram of the battery module provided in an embodiment of this application; Figure 3 This is a schematic diagram of the lower shell structure provided in an embodiment of this application; Figure 4 This is another structural schematic diagram of the lower shell provided in an embodiment of this application; Figure 5 Another structural schematic diagram of the lower shell provided in the embodiments of this application; Figure 6 for Figure 5 A magnified structural diagram at point A; Figure 7 Another structural schematic diagram of the lower shell provided in the embodiments of this application; Figure 8 An assembly diagram of the lower shell and battery management module provided in an embodiment of this application; Figure 9 Another structural schematic diagram of the lower shell provided in the embodiments of this application; Figure 10 Another structural schematic diagram of the lower shell provided in the embodiments of this application; Figure 11 This is a schematic diagram of the upper shell structure provided in an embodiment of this application; Figure 12 Another structural schematic diagram of the upper shell provided in the embodiments of this application; Figure 13 An exploded view of the battery module provided in the embodiments of this application; Figure 14 An assembly diagram of the battery module provided in an embodiment of this application.

[0027] Figure label: 1-Outer shell, 101-Lower shell, 102-Upper cover, 103-Lower flange, 104-Upper flange, 105-Auxiliary mounting post, 106-Recessed area, 107-First limiting surface, 108-Second limiting surface, 109-Third limiting surface, 110-Threaded mounting hole, 2-Isolation plate, 21-Avoidance notch, 22-Mounting post, 3-First mounting space, 4-Second mounting space, 5-Battery module, 51-Soft pack Battery cell, 52-Insulating tab bracket, 53-Foam, 54-Connecting bar, 55-Lead-out bar, 56-Sampling circuit board, 57-Cover plate, 6-Battery management module, 7-Heat dissipation boss, 8-Support column, 9-Reinforcing rib, 10-Limiting rib, 1001-Round corner, 11-Insulating plate, 12-Explosion-proof valve, 13-Sealing ring, 14-Interface terminal, 15-Indicator light, a-First preset direction, b-Second preset direction. Detailed Implementation

[0028] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0029] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0030] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] The following reference Figures 1 to 14 This application describes a battery module according to some embodiments.

[0034] See Figures 1 to 5 , Figure 6 and Figure 8 As shown, an embodiment of this application provides a battery module, including: a housing 1, a battery module 5, and a battery management module 6; wherein, an isolation plate 2 is formed inside the housing 1 to divide the interior of the housing 1 into a first installation space 3 and a second installation space 4 along a first preset direction a, the battery module 5 is disposed in the first installation space 3, and the battery management module 6 is disposed in the second installation space 4.

[0035] As can be seen from the structure described above, this application provides a novel battery module that separates the outer casing 1 into a first installation space 3 and a second installation space 4, namely the electrical compartment and the battery compartment. The battery module 5 is installed in the first installation space 3, namely the battery compartment, and the battery management module 6 is installed in the second installation space 4, namely the electrical compartment. When the battery module 5 experiences thermal runaway, the isolation plate 2 can prevent the material ejected from the battery from accumulating in the electrical area, thereby effectively preventing the accumulated material from causing a short circuit and spark in the electrical area, which could lead to a fire in the entire device. This greatly improves the safety and reliability of the battery module during use. In this embodiment, preferably, as follows: Figure 4 , Figure 7 and Figure 8 As shown, the bottom wall of the outer casing 1 has a heat dissipation protrusion 7 located in the second mounting space 4, the battery management module 6 is located above the heat dissipation protrusion 7, and a heat-conducting layer is provided between the two. As can be seen from the structure described above, the heat generated by the battery management module 6 during operation will be transferred to the heat dissipation boss 7 through the heat conduction layer. The heat dissipation boss 7 will then transfer the heat to the outer casing 1, and finally the heat will be dissipated to the outside through the outer casing 1. This ensures that the battery management module 6 will not overheat during operation, extends its service life, and improves its performance.

[0036] Furthermore, preferably, the thermally conductive layer can be a thermally conductive structural adhesive, which, in addition to its thermal conductivity, can also further secure the battery management module 6. Of course, it is not limited to this; the thermally conductive layer can also adopt other structures, such as an insulating thermally conductive pad, depending on the actual needs.

[0037] Furthermore, preferably, the area where the electrical components on the battery management module 6 are concentrated is positioned directly opposite the heat dissipation platform, which helps to improve the heat dissipation effect, but of course, it is not limited to this. In this embodiment, preferably, as follows: Figure 4 , Figure 7 and Figure 8 As shown, the bottom wall of the housing 1 has a plurality of support columns 8 located in the second mounting space 4. The battery management module 6 is mounted on the top of the plurality of support columns 8 and is detachably connected to the plurality of support columns 8 through a plurality of first fastening components. As can be seen from the structure described above, the multiple support columns 8 serve to support the battery management module 6, allowing the battery management module 6 to be located above the heat dissipation boss 7, thereby facilitating the heat dissipation function of the heat dissipation boss 7 on the battery management module 6. Moreover, in this application, the support columns 8 and the battery management module 6 are connected by a first fastening component, such as screws or bolts, which is a detachable connection method, making it easy to install and disassemble. In this embodiment, preferably, as follows: Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, a reinforcing rib 9 is provided on the side of the isolation plate 2 near the second installation space 4. As can be seen from the structure described above, a reinforcing rib 9 is provided on one side of the isolation plate 2, which increases the strength of the isolation plate 2, enhances the limiting effect on the battery module 5, and enables the isolation plate 2 to effectively suppress the expansion of the battery module 5. Furthermore, in this application, the reinforcing rib 9 is provided on the side away from the battery module 5, thereby avoiding occupying the installation space of the battery module 5 and helping to improve space utilization. In this embodiment, preferably, as follows: Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, there are multiple reinforcing ribs 9, which are arranged sequentially and evenly along the length of the partition plate 2, and each reinforcing rib 9 extends along the height of the partition plate 2. As described above, multiple evenly distributed reinforcing ribs 9 are arranged in a certain order on one side of the separator 2. This not only further ensures strength but also helps to ensure the uniformity of stress on the battery module 5. Of course, the arrangement of the multiple reinforcing ribs 9 is not limited to the above and can be designed according to actual needs. In addition, the number of reinforcing ribs 9 is not limited to multiple; it can also be one, etc. In this embodiment, preferably, as follows: Figures 4 to 8 As shown, the outer shell 1 forms a limiting rib 10, and the limiting rib 10 extends along a second preset direction b perpendicular to the first preset direction a and is located on one side within the first mounting space 3. One side wall of the battery module 5 abuts against the limiting rib 10, and the other side walls of the battery module 5 abut against the other side walls within the corresponding first mounting space 3. As can be seen from the structure described above, the limiting rib 10 on the outer shell 1 serves to limit one end of the battery module 5, and can also effectively avoid the structural components at the end of the battery module 5, without the need to thicken the side wall of the outer shell 1 as a whole, thus saving materials. Furthermore, preferably, the battery module 5 is a cuboid structure with four sides. Two sides along the first preset direction a respectively cooperate with the first limiting surface 107 and the second limiting surface 108 in the first mounting space 3. The first limiting surface 107 and the second limiting surface 108 limit the left and right sides of the battery pack along the stacking direction, which can effectively suppress the expansion of the battery module 5 along the large side, thereby improving the life and performance of the battery module 5. The two opposite sides of the battery module 5 along the second preset direction b respectively abut against the limiting rib 10 and the third limiting surface 109 in the first mounting space 3, thereby playing a limiting role.

[0038] Furthermore, preferably, the first limiting surface 107 and the second limiting surface 108 are both large parallel surfaces; the third limiting surface 109 is the recessed area 106 of the lower shell 101 described below, that is, when viewed from inside the lower shell 101, it is an arc-shaped surface with a convex structure, and the battery module 5 contacts the front side of this arc-shaped surface. Of course, it is not limited to the above.

[0039] In this embodiment, preferably, as follows: Figure 6 As shown, the side wall of the limiting rib 10 near the battery module 5 is inclined and tilts from bottom to top away from the battery module 5 along the height direction of the outer shell 1; the top corner of the side wall of the limiting rib 10 near the battery module 5 is formed with a guide fillet 1001. As can be seen from the structure described above, by setting the side wall of the limiting rib 10 near the battery module 5 to be inclined, it serves to guide the battery module 5 into the casing. Moreover, by setting the top corner of the side wall of the limiting rib 10 near the battery module 5 to be rounded 1001, it avoids scratching and damaging the battery module 5, and also helps with guidance. In this embodiment, preferably, as follows: Figure 6As shown, the limiting rib 10 is formed on the bottom wall and the corresponding side wall of the outer shell 1. It can be seen that the limiting rib 10 is connected to both the bottom wall and the side wall of the outer shell 1. This helps to improve the strength of the limiting rib 10 and enhance the limiting effect on the battery module 5. Moreover, with the support of the bottom wall and the side wall, the limiting rib 10 can be designed to be shorter, which can also meet the strength requirements and save materials.

[0040] In this embodiment, preferably, as follows: Figure 1 As shown, the battery module also includes an insulating plate 11. An insulating plate 11 is provided between the battery module 5 and the side wall of the first installation space 3, except for the side wall where the limiting rib 10 is provided. The cover plate 57 of the battery module 5 near the limiting rib 10 is made of insulating material. As can be seen from the structure described above, insulating plates 11 are provided on both sides of the battery module 5 and between the first limiting surface 107, the second limiting surface 108 and the third limiting surface 109 that correspond to each other at one end. The cover plate 57 at the other end of the battery module 5 is made of insulating material, thereby playing a role in all-round insulation protection and avoiding short circuits. In this embodiment, preferably, as follows: Figure 13 and Figure 14 As shown, the battery module 5 includes multiple pouch cells 51, insulating tab brackets 52, foam 53, multiple connectors 54, lead-out connectors 55, a sampling circuit board 56, and a cover plate 57. The multiple pouch cells 51 are stacked sequentially along a first preset direction a. It should be noted that the first preset direction a is the same as the thickness direction of the pouch cells 51, and the second preset direction b is the same as the length direction of the pouch cells 51. Along the second preset direction b, the insulating tab brackets 52 are disposed at one end of the stacked pouch cells 51. The sampling circuit board 56, connecting strip 54, and lead-out strip 55 are all mounted on the insulating tab bracket 52. Multiple soft-pack battery cells 51 are connected in series or parallel through multiple connecting strips 54. The insulating tab bracket 52 serves to support the above-mentioned components, and the lead-out strip 55 serves to lead electrical energy to the outside. This part is prior art and will not be described in detail here. The sampling circuit board 56 is connected to multiple connecting strips 54. The circuit board can collect data such as voltage and temperature of the battery cells. Along the first preset direction a, foam 53 is provided on both sides of the stacked multiple soft-pack cells 51, and foam 53 is also provided on the top of the stacked multiple soft-pack cells 51. By providing foam 53 on the sides and top of the soft-pack cells 51, it is not only convenient to assemble the battery module 5 and the outer casing 1, but also to protect the battery module 5. The cover plate 57 is provided on the side of the insulating tab bracket 52 away from the cells, and serves to protect the structural components on the insulating tab bracket 52. In this embodiment, preferably, as follows: Figure 5 and Figure 10 As shown, the battery module also includes an explosion-proof valve 12, which is installed on the housing 1 and is disposed corresponding to the first installation space 3, and is connected to the first installation space 3. As can be seen from the structure described above, when the battery module 5 experiences thermal runaway, the isolation plate 2 can prevent the material ejected from the battery from accumulating in the electrical area, thereby preventing the accumulation of the material from causing a short circuit and sparking in the electrical area, which could lead to the entire machine catching fire. Furthermore, when the internal gas pressure of the entire machine rises to the explosion pressure value of the explosion-proof valve 12, the explosion-proof valve 12 opens to release the gas, thereby improving safety and reliability. In this embodiment, preferably, a thermally conductive structural adhesive is provided between the battery module 5 and the bottom wall of the outer casing 1. As can be seen from the structure described above, the heat generated by the battery module 5 during high-rate charging and discharging is transferred to the lower shell 101 and its ribs through the thermally conductive structural adhesive, thereby quickly dissipating heat and ensuring that it does not overheat during operation.

[0041] In this embodiment, preferably, as follows: Figure 3 As shown, the isolation plate 2 has a clearance notch 21, which can effectively avoid cables and other electrical connections between the battery management module 6 and the battery module 5. Furthermore, preferably, the clearance 21 is equipped with a waterproof and dustproof connector, and the aforementioned cable is threaded through this connector. Of course, this is not the only option. In this embodiment, preferably, as follows: Figure 1 , Figure 2 and Figure 9 As shown, the outer casing 1 includes a lower casing 101 and an upper cover 102; wherein, the lower casing 101 has a lower flange 103, the upper cover 102 has an upper flange 104, and the upper flange 104 and the lower flange 103 are attached together along the height direction of the outer casing 1 and are detachably connected by a second fastening member such as a screw or bolt. As can be seen from the structure described above, the upper cover 102 and the lower shell 101 are joined together and connected by a second fastening component such as screws or bolts. This is a detachable connection method, which is convenient for installation and disassembly, and especially convenient for later maintenance and other work.

[0042] Further, preferably, such as Figure 3 , Figure 9 , Figure 11 and Figure 12The lower shell 101 has an auxiliary mounting post 105 located below and connected to the lower flange 103. A second fastening member is sequentially mounted on the upper flange 104, the lower flange 103, and the auxiliary mounting post 105. The lower shell 101 also has a recessed area 106 to avoid the auxiliary mounting post 105. It is evident that because the upper flange 104 and the lower flange 103 are relatively thin, their connection strength is insufficient. Therefore, the auxiliary mounting post 105 is provided to ensure the strength of the connection. Furthermore, the recessed area 106 on the side wall of the lower shell 101 serves to avoid the auxiliary mounting post 105. However, this is not the only limitation. In this embodiment, preferably, as follows: Figure 3 As shown, the partition plate 2 is formed with mounting posts 22, and the upper cover 102 is detachably connected to the mounting posts 22 by a third fastening member such as screws or bolts. As can be seen from the structure described above, mounting posts 22 are provided on the isolation plate 2, and threaded holes are opened on the mounting posts 22. This structure can ensure the strength requirements of the isolation plate 2. In addition, the upper cover 102 and the mounting posts 22 are connected by a third fastening component such as screws or bolts, which is a detachable connection method, which is convenient for installation and disassembly, and especially convenient for later maintenance and other work.

[0043] Furthermore, preferably, the upper cover 102 is provided with threaded mounting holes 110 for installing a third fastening component, such as a screw or bolt. In this embodiment, preferably, as follows: Figures 3 to 10 As shown, the lower shell 101, the isolation plate 2, and the aforementioned support column 8, heat dissipation platform, reinforcing rib 9, limiting rib 10, auxiliary mounting column 105, and lower flange 103 are all integrally cast, forming a single piece with high efficiency and high yield. Of course, this is not the only option; other forming processes can also be used, depending on the specific needs.

[0044] Furthermore, preferably, the lower shell 101, the isolation plate 2, and the aforementioned support column 8, heat dissipation platform, reinforcing rib 9, limiting rib 10, etc., are made of aluminum alloy casting.

[0045] Furthermore, preferably, after the heat dissipation platform is cast, its upper surface can be machined to a smooth surface; however, this is not the only option.

[0046] It should be noted that the threaded holes on the support column 8 for installing the first fastening component and the threaded holes on the mounting column 22 for installing the third fastening component are both machined after being cast.

[0047] In this embodiment, preferably, as follows: Figure 11 and Figure 12 As shown, the top cover 102 is cast in one piece, resulting in high efficiency and a high yield. Of course, it's not limited to this.

[0048] Furthermore, preferably, the top cover 102 is made of aluminum alloy casting. In this embodiment, preferably, as follows: Figure 3 As shown, one of the lower flanges 103 has a mounting groove, and the battery module also includes a sealing ring 13, which is installed in the mounting groove, making the sealing ring 13 more stable, and the sealing ring 13 is compressed between the upper flange 104 and the lower flange 103. As can be seen from the structure described above, the upper flange 104 and the lower flange 103 increase the mating area between the upper cover 102 and the lower shell 101, which not only facilitates assembly but also helps to improve the stability and firmness after assembly. In addition, it provides a better mounting position for the sealing ring 13. The design of the sealing ring 13 achieves overall waterproofing and dustproofing. It should be noted that the mounting groove is not limited to the lower flange 103 of the lower shell 101, but can also be set on the upper flange 104 of the upper cover 102, depending on the actual needs.

[0049] In this embodiment, preferably, as follows: Figure 2 As shown, the lower housing 101 is provided with an interface terminal 14 and an indicator light 15, and preferably, both the interface terminal 14 and the indicator light 15 are communicatively connected to the battery management module 6.

[0050] 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, characterized in that, include: The housing comprises a casing, a battery module, and a battery management module; wherein, an isolation plate is formed inside the casing to divide the interior of the casing into a first installation space and a second installation space along a first preset direction, the battery module is disposed in the first installation space, and the battery management module is disposed in the second installation space; The bottom wall of the housing has a heat dissipation protrusion located in the second mounting space, the battery management module is located above the heat dissipation protrusion, and a heat-conducting layer is provided between the two. The bottom wall of the housing is formed with a plurality of support columns located in the second mounting space. The battery management module is mounted on the top of the plurality of support columns and is detachably connected to the plurality of support columns through a plurality of first fastening components. The isolation plate has reinforcing ribs on the side closest to the second installation space.

2. The battery module according to claim 1, characterized in that, The number of reinforcing ribs is multiple, and they are arranged sequentially and evenly at intervals along the length direction of the partition plate, and each of the reinforcing ribs extends along the height direction of the partition plate.

3. The battery module according to claim 1, characterized in that, The outer casing forms a limiting rib, and the limiting rib extends along a second preset direction perpendicular to the first preset direction and is located on one side within the first installation space. One side wall of the battery module abuts against the limiting rib, and the remaining side walls of the battery module abut against the remaining side walls within the corresponding first installation space.

4. The battery module according to claim 3, characterized in that, The limiting rib has an inclined sidewall near the battery module, and slopes upwards from the bottom of the housing towards the direction away from the battery module; the apex corner of the limiting rib's sidewall near the battery module has a guide radius; and / or The limiting ribs are formed on the bottom wall and the corresponding side wall of the outer shell; and / or The battery module further includes an insulating plate, and the insulating plate is provided between the battery module and the sidewall of the first mounting space, except for the sidewall where the limiting rib is provided; the cover plate of the battery module near the limiting rib is made of insulating material; and / or The battery module includes multiple pouch cells, insulating tab brackets, foam, multiple connectors, lead-out connectors, a sampling circuit board, and a cover plate; wherein, the multiple pouch cells are stacked sequentially along the first preset direction; along the second preset direction, the insulating tab brackets are disposed at one end of the stacked multiple pouch cells; The sampling circuit board, the connecting bar, and the lead-out bar are all mounted on the insulating tab support, and multiple soft-pack cells form a series or parallel structure through multiple connecting bars; the sampling circuit board is connected to multiple connecting bars; along the first preset direction, foam is provided on both opposite sides of the stacked multiple soft-pack cells; foam is also provided on the top of the stacked multiple soft-pack cells; the cover plate is provided on the side of the insulating tab support away from the cells.

5. The battery module according to claim 1, characterized in that, The battery module further includes an explosion-proof valve, which is mounted on the housing and is disposed corresponding to the first mounting space, and is connected to the first mounting space; and / or A thermally conductive structural adhesive is provided between the battery module and the bottom wall of the housing; and / or The isolation plate has a clearance gap.

6. The battery module according to any one of claims 1 to 5, characterized in that, The outer casing includes a lower shell and an upper cover; wherein the lower shell has a downward flange, the upper cover has an upward flange, and the upward flange and the downward flange are abutted together along the height direction of the outer casing and are detachably connected by a second fastening member.

7. The battery module according to claim 6, characterized in that, The partition plate is formed with mounting posts, and the upper cover is detachably connected to the mounting posts via a third fastening member; and / or The lower shell and the isolation plate are integrally cast; and / or The top cover is cast; and / or One of the upper flange and the lower flange has a mounting groove. The battery module also includes a sealing ring, which is installed in the mounting groove and compressed between the upper flange and the lower flange; and / or The lower shell has an auxiliary mounting post located below and connected to the lower flange, and the second fastening member is sequentially installed on the upper flange, the lower flange and the auxiliary mounting post, and the side wall of the lower shell has a recessed area that avoids the auxiliary mounting post.

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