Battery module cover and battery module

Abstract

The embodiment of the utility model provides a battery module cover and a battery module. The battery module cover comprises a first cover body and a second cover body, the first cover body covers an opening of a battery cell cavity in a battery module, a plurality of battery cell openings communicated with the battery cell cavity in the battery module are formed in the first cover body, battery cells in the battery module are arranged in the battery cell cavity through the battery cell openings, the second cover body covers the battery cell openings of the first cover body, and the battery cell openings of the second cover body are communicated with the battery cell cavity in the battery module. The second cover body is detachably connected with the first cover body in a sealing manner, and the sealing connection part of the second cover body and the first cover body is arranged around the plurality of battery cell openings. According to the embodiment of the invention, the battery module cover is mounted on the battery module, so that the problem of more working procedures during sealing is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery module cover and a battery module. BACKGROUND

[0002] With the development of the battery energy storage field, integrated battery modules have a stable development prospect. As a revolutionary technology in the battery field, MTB (Module to Bracket) changes the traditional process of assembling modules from battery cells, and technically realizes the reduction of both labor costs and material costs.

[0003] MTB is to integrate battery cells directly into the bottom liquid cooling plate. When sealing the battery cells, the battery cells are assembled into multiple battery packs, and then the multiple battery packs are placed into the corresponding modules, and a cover is added to each module to ensure the sealing effect.

[0004] However, in the prior art, there are many problems in the sealing process of MTB. UTILITY MODEL CONTENT

[0005] The embodiments of the present application provide a battery module cover and a battery module to solve the problem of too many processes in sealing.

[0006] In a first aspect, the embodiments of the present application provide a battery module cover and a battery module, comprising:

[0007] A first cover body covers the opening of the battery cell cavity in the battery module, a plurality of battery cell openings are formed in the first cover body and communicate with the battery cell cavity in the battery module, and the battery cells in the battery module are arranged in the battery cell cavity through the battery cell openings.

[0008] A second cover body covers the battery cell openings of the first cover body and is detachably sealed to the first cover body, wherein the sealing connection between the second cover body and the first cover body is arranged around the plurality of battery cell openings.

[0009] In the embodiments of the present application, a buckle groove is formed in the first cover body, a buckle is arranged on the second cover body, and the first cover body is detachably connected to the buckle on the second cover body through the buckle groove.

[0010] In the embodiments of the present application, a sealing cavity communicating with the battery cell openings is arranged between the first cover body and the second cover body.

[0011] A sealing groove is arranged around the sealing cavity on the first cover body, and sealing glue is left in the sealing groove.

[0012] A sealing strip is arranged around the sealing cavity on the second cover body, wherein the sealing strip is detachably clamped in the sealing groove, and the sealing strip is sealed to the sealing glue.

[0013] In the embodiment of the present application, the FPC support is arranged outside the battery module cover through the FPC opening arranged on the sealing groove, and the FPC support is in sealing connection with the FPC opening.

[0014] In the embodiment of the present application, the output aluminum row is arranged in the sealing cavity, and the output aluminum row is arranged on the output aluminum row support through the aluminum row opening arranged on the sealing groove, wherein the output aluminum row is in sealing connection with the output aluminum row support, and the output aluminum row support is fixedly connected to the first cover body.

[0015] In the embodiment of the present application, a plurality of series aluminum row grooves are arranged on the first cover body, each series aluminum row groove corresponds to at least one group of cell ports, and a series aluminum row is further arranged in the series aluminum row groove, and the cells in the cell ports are electrically connected through the series aluminum row and the output aluminum row.

[0016] In the embodiment of the present application, a plurality of explosion-proof ports are arranged on the first cover body and are in communication with the sealing cavity.

[0017] In the embodiment of the present application, a plurality of mounting clamping grooves are arranged on the outer side of the first cover body, a plurality of first buckles are arranged on the end plate in the battery module, a plurality of second buckles are arranged on the side plate, the mounting clamping grooves correspond to the first buckles and the second buckles, and the first buckles and the second buckles are clamped in the mounting clamping grooves.

[0018] In the embodiment of the present application, a glue groove is arranged on the first cover body, a first glue strip is arranged on the end plate in the battery module, and a second glue strip is arranged on the side plate, the glue groove corresponds to the first glue strip and the second glue strip, and the glue groove is clamped with the first glue strip and the second glue strip.

[0019] In a second aspect, the embodiment of the present application provides a battery module, which comprises the battery module cover in the embodiment of the present application.

[0020] The battery module cover and the battery module provided by the embodiment of the present application are combined with the first cover body and the second cover body, the first cover body is arranged on the opening of the cell cavity in the battery module, a plurality of cell ports are arranged on the first cover body and are in communication with the cell cavity in the battery module, the cells in the battery module are arranged in the cell cavity through the cell ports, the sealing effect between the first cover body and the cell ports is ensured, the second cover body is arranged on the cell ports of the first cover body and is in detachable sealing connection with the first cover body, the sealing connection part between the second cover body and the first cover body surrounds the plurality of cell ports, so that the cell ports in the whole battery module are sealed by the first cover body and the second cover body, the cells do not need to be packaged by the battery pack, and the battery pack needs to be sealed, thereby solving the problem of too many processes in sealing. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application.

[0022] Figure 1 A structural schematic diagram of a battery module cover provided for an embodiment of the application;

[0023] Figure 2 A structural schematic diagram of a first cover body of a battery module cover provided for an embodiment of the application Figure 1 ;

[0024] Figure 3 A structural schematic diagram of a first cover body of a battery module cover provided for an embodiment of the application Figure 2 ;

[0025] Figure 4 A structural schematic diagram of a second cover body of a battery module cover provided for an embodiment of the application;

[0026] Figure 5 A structural schematic diagram of a battery module provided for an embodiment of the application;

[0027] Figure 6 A structural schematic diagram of a sealing structure provided for an embodiment of the application.

[0028] Through the above drawings, the specific embodiments of the application have been shown, and will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the application by any means, but to illustrate the concept of the application to those skilled in the art by referring to specific embodiments.

[0029] Reference signs:

[0030] 100 - first cover body; 110 - cell port; 120 - buckle groove; 130 - sealing groove; 131 - sealing glue; 140 - FPC support; 141 - FPC opening; 142 - heat dissipation port; 143 - FPC connector; 150 - output aluminum row support; 151 - aluminum row opening; 152 - output aluminum row; 153 - series aluminum row; 160 - series aluminum row groove; 170 - explosion-proof port; 180 - mounting buckle groove; 190 - glue groove;

[0031] 200 - second cover body; 210 - buckle; 220 - sealing strip; 221 - third glue strip; 222 - fourth glue strip; 230 - support column;

[0032] 300 - battery module; 310 - end plate; 311 - first buckle; 312 - first glue strip; 320 - side plate; 321 - second buckle; 322 - second glue strip. DETAILED DESCRIPTION

[0033] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to all alternative modifications and embodiments as would be apparent to those of ordinary skill in the art. It is to be understood that other embodiments can be utilized, and structural or procedural changes can be made without departing from the scope of the present disclosure. Therefore, the following detailed description is not intended to be limiting.

[0034] In the prior art, MTB is a key technology in the field of new energy technology. In application, the battery cells usually need to be sealed and protected. Generally, the battery cells are grouped into battery packs, and then the battery packs are placed into modules one by one, and then the modules are sealed by corresponding covers, so as to achieve the effect of sealing the battery cells. However, because multiple battery cells need to be sealed, the production cost is increased, and the overall space occupation is large due to the accumulation of multiple processes. In addition, after the battery cells are sealed, aviation plugs and other electronic devices need to be installed on the battery module to electrically connect the battery cells in the battery module with other devices to realize power supply or signal transmission. In order to ensure the sealing effect, the input and output ports of the electronic devices need to be sealed, and even the installation ports of the electrical connection need to be sealed. Therefore, there are many sealing processes, which reduces the work efficiency and increases the cost.

[0035] To solve the problem of too many sealing processes of the existing MTB battery module, the battery module cover and the battery module provided by the embodiments of the present application are used to separate the battery cells in the module from the external environment of the module by using the second cover. The second cover is arranged on the cell port, so that the battery cells of the entire battery module are sealed by the second cover, and there is no need to seal each battery cell. In addition, in order to reduce the sealing process when the battery cells are connected to the outside of the battery module, the first cover and the second cover are arranged to be used in cooperation. The FPC opening and the aluminum row opening are left on the first cover. The first cover is arranged on the opening of the battery cell cavity in the battery module, and the second cover is detachably connected with the first cover to seal the FPC opening and the aluminum row opening, so as to ensure the sealing effect between the first cover and the second cover and the sealing effect of the entire battery module.

[0036] The battery module cover and the battery module provided by the embodiments of the present application are used to solve the above technical problems of the prior art.

[0037] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0038] Figure 1 The structural diagram of the battery module cover provided in the embodiment of the present application is shown in the figure Figure 1 As shown in the figure, the battery module cover comprises a first cover body 100 and a second cover body 200, and a sealing cavity communicating with the cell port is arranged between the first cover body 100 and the second cover body 200, wherein

[0039] The first cover body 100 can refer to a support body supporting the battery module cover, wherein the first cover body 100 can be made of a material with high heat dissipation, such as aluminum or copper, and the first cover body 100 can support the FPC output, the aluminum row output, and the connection with other component supports of the battery, thereby ensuring the normal working state of the battery.

[0040] The second cover body 200 can refer to a cover sealing the battery module cover, wherein the second cover body 200 can be made of a material with high strength, such as stable materials such as polypropylene and polyphenylene sulfide, and the second cover body 200 can separate the internal and external environments of the battery module to form a sealed environment in the battery module.

[0041] The sealing cavity can refer to a sealed space formed by cooperation of various structures, which can be a single annular cavity or a complex irregular cavity. In the embodiment of the present application, the sealing cavity is the space between the first cover body and the second cover body after the first cover body and the second cover body are sealed by combining the sealing groove and the sealing strip, and the sealing cavity communicates with the cell port.

[0042] The first cover body 100 and the second cover body 200 can be used to close the entire battery module, and the first cover body 100 and the second cover body 200 can be sealed by a gasket or sealed by a sealant. In the embodiment of the present application, the first cover body 100 is provided with a buckle groove, the second cover body 200 is provided with a buckle, and the first cover body 100 is detachably connected with the buckle on the second cover body 200 through the buckle groove. First, the first cover body 100 and the second cover body 200 are connected by the buckle combined with the buckle groove, second, the first cover body 100 is provided with a sealing groove arranged around the sealing cavity, and the sealing groove is left with a sealant, the second cover body 200 is provided with a sealing strip arranged around the sealing cavity, and the sealing strip is detachably clamped in the sealing groove, the sealing strip and the sealant in the sealing groove are bonded to achieve a sealing effect, and the buckle is pressed in the buckle groove to make the sealing strip and the sealant bond more firmly, thereby enhancing the sealing effect.

[0043] Figure 2 The structural diagram of the first cover body of the battery module cover provided in the embodiment of the present application is shown in the figure Figure 1 As shown in the figure Figure 2As shown, the first cover is arranged at the opening of the cell cavity in the battery module, a plurality of cell ports 110 are arranged on the first cover and communicate with the cell cavity in the battery module, the cells in the battery module are arranged in the cell cavity through the cell ports 110, a plurality of series aluminum slot 160 are arranged on the first cover, each series aluminum slot 160 corresponds to at least one group of cell ports 110, a series aluminum bar is further arranged in the series aluminum slot 160, and the cells in the cell ports 110 are electrically connected through the series aluminum bar and the output aluminum bar, wherein,

[0044] The battery module can refer to a whole module composed of a plurality of cells, such as a traditional module and a soft package battery module. In the embodiment of the present application, the battery module is composed of 16 cells, and the 16 cells are connected in series in the battery module and output through a unified output aluminum port.

[0045] The cell cavity can refer to a space cavity for placing the cells, which can change with the shape of the cells and can be a cylinder or a long strip. In the embodiment of the present application, the cell cavity is adapted to the shape and size of the cells, and the caliber of the cell cavity is slightly larger than the diameter of the cells, so as to facilitate the insertion of the cells into the cell cavity.

[0046] The cell port 110 can refer to an opening for accommodating the positive and negative poles of the cell. The cell port 110 can be circular, square, or oval, and the shape of the cell port 110 can change with the shape and size of the cell. In some embodiments, the cell port 110 is circular. After the cell is placed in the cell cavity, the positive and negative poles of the cell pass through the cell port 110 and are connected to the series aluminum bar in the battery module. In addition, the number of cell ports 110 is determined according to the number of cells. For example, since 16 cells need to be placed in the battery module, 32 cell ports 110 are provided to ensure that the positive and negative poles of the cells are connected to the series aluminum bar.

[0047] The series aluminum bar can refer to a component for connecting the cells in the module. The series aluminum bar can effectively connect the cells in series and transmit electric energy. The material of the series aluminum bar can be pure aluminum or aluminum alloy material, so as to improve the conductivity. In some embodiments, the series aluminum bar is made of a material with good thermal conductivity, so as to ensure that the heat generated by the cells can be quickly dissipated, thereby ensuring the service life of the cells.

[0048] In the embodiment of the present application, the series aluminum slot 160 is arranged on the first cover, each series aluminum slot 160 corresponds to at least one group of cell ports 110, the series aluminum bar can be adhered in the series aluminum slot 160 through the heat staking column after being heat staked, one end of the series aluminum bar is connected to the positive pole of the cell, and the other end of the series aluminum bar is connected to the negative pole of the cell, thereby ensuring the normal output of the electric energy of the cell.

[0049] In some embodiments, the first cover body is provided with a plurality of explosion-proof openings 170 in communication with the sealed cavity, wherein the explosion-proof openings 170 can prevent the battery cells in the battery module from exploding in an abnormal state, such as when the battery cells are in thermal runaway, the pressure in the battery module rises sharply, affecting the service life of the battery, and even affecting the safety of the user. The arrangement position of the explosion-proof openings 170 can be set according to the position of the battery cells. In the embodiment of the present application, the positions of the plurality of explosion-proof openings 170 are arranged in two rows, and the two rows of explosion-proof openings 170 are arranged between the three rows of battery cell openings 110. The explosion-proof openings 170 are close to the edge of the battery module, so that the 16 battery cells are evenly cooled, and the stability of the sealed space is ensured.

[0050] Figure 3 Structure diagram of the first cover body 100 of the battery module cover provided in the embodiment of the present application Figure 2 As shown in Figure 3 , the sealed cavity is provided with an FPC support (140), wherein the FPC support (140) is arranged outside the battery module cover through the FPC opening (141) formed on the sealing groove (130), and the FPC support (140) and the FPC opening (141) are in sealing connection, wherein,

[0051] The FPC support 140 can refer to a support body for mounting the FPC. In the battery module, the space between the components is close, and the shape of the FPC support 140 can be changed according to the needs of the battery module. In addition, the material of the FPC support 140 needs to be selected from high-strength alloys. In the embodiment of the present application, the FPC support 140 is provided with a heat dissipation opening 142 in communication with the explosion-proof opening on the first cover body 100, so as to uniformly dissipate the heat of the explosion-proof opening. The FPC support 140 is adhered to the first cover body 100 through the hot-melt column after being hot-melted, and is fixedly connected with the first cover body 100, so that the FPC support 140 is arranged in the sealed cavity. The FPC support 140 is provided with an FPC connector 143 for connecting the FPC, and the FPC connector extends out of the first cover body 100.

[0052] The FPC opening can refer to an opening for clamping the FPC support 140. The caliber of the FPC opening can be matched with the size of the FPC support 140 to improve the sealing effect. In the embodiment of the present application, the FPC opening is formed on the sealing groove 130 of the first cover body 100 for clamping the FPC support 140.

[0053] In some embodiments, when the protruding part of the FPC support 140 is clamped in the FPC opening, a sealant is left on the FPC opening. The sealant can be selected from materials with high temperature resistance and high adhesion, such as epoxy sealant, polyurethane sealant, and silicone sealant. The FPC support 140 is adhered to the sealant, which enhances the sealing effect of the sealed cavity.

[0054] In the embodiment of the present application, the sealed cavity is provided with an output aluminum row 152, the output aluminum row 152 is installed on the output aluminum row support 150 through the aluminum row opening on the sealing groove 130, wherein the output aluminum row 152 and the output aluminum row support 150 are in sealed connection, and the output aluminum row support 150 is fixedly connected to the first cover body 100, wherein,

[0055] The output aluminum row 152 can refer to a conductive row made of material for transmitting current in a battery module or a battery system, the output aluminum row 152 transmits the current generated by the battery cell to the external circuit, or inputs the external current into the battery cell. In addition, the output aluminum row 152 is made of material with good thermal conductivity, such as aluminum.

[0056] The output aluminum row support 150 can refer to a support body for installing the output aluminum row 152, in the battery module, because the power of the entire battery module needs to be output, the position of the output aluminum row support 150 can be set according to the needs of the battery module, so as to install the output aluminum row 152. In the embodiment of the present application, the output aluminum row support 150 is provided with a threaded hole for installing the output aluminum row 152, so as to facilitate the installation of the wiring.

[0057] The aluminum row opening can refer to an opening for clamping the output aluminum row 152, the caliber of the aluminum row opening can be matched with the size of the output aluminum row 152, so as to improve the sealing effect. In the embodiment of the present application, the aluminum row opening is left on the sealing groove on the first cover body 100, for clamping the output aluminum row 152.

[0058] In some embodiments, the output aluminum row support 150 is fixedly connected to the first cover body 100, one end of the output aluminum row 152 is screwed to the output aluminum row support 150, and the other end of the output aluminum row 152 is in the sealed cavity, the aluminum row opening is left on the sealing groove, and the output aluminum row 152 is clamped in the aluminum row opening. When the output aluminum row 152 and the aluminum row opening are left with sealing glue therebetween, the sealing effect of the sealed cavity is enhanced.

[0059] Figure 4 The structure diagram of the second cover body 200 of the battery module cover provided in the embodiment of the present application is shown in Figure 4 As shown in the figure, the second cover body 200 is provided with a buckle 210, which cooperates with the buckle groove on the first cover body, so that the first cover body and the second cover body 200 are detachably connected, the positions of the buckle 210 correspond to the positions of the buckle groove, and the buckle 210 is arranged along the circumference of the second cover body 200, so that the second cover body 200 can be tightly clamped with the first cover body.

[0060] In some embodiments, the second cover body 200 is also provided with a support column 230 for supporting the first cover body, and a sealed space between the first cover body and the second cover body 200 is reserved.

[0061] The second cover 200 is also provided with a sealing strip 220, which is arranged circumferentially along the edge of the second cover 200. The second cover 200 has a third adhesive strip 221 corresponding to the FPC opening on the first cover and a fourth adhesive strip 222 corresponding to the aluminum strip opening on the first cover. When the second cover 200 is pressed against the first cover, the third adhesive strip 221 on the second cover 200 can be squeezed against the FPC that is engaged in the FPC opening on the first cover, thereby forming a sealed space between the second cover 200 and the FPC. Similarly, the fourth adhesive strip 222 on the second cover 200 can be squeezed against the output aluminum strip that is engaged in the aluminum strip opening on the first cover, thereby forming a sealed space between the second cover 200 and the output aluminum strip, further improving the sealing effect between the first cover and the second cover 200.

[0062] Figure 5 This is a schematic diagram of the structure of the battery module provided in the embodiments of this application, such as... Figure 5 As shown, the first cover 100 has multiple mounting slots 180 on its side. The end plate 310 of the battery module has multiple first buckles, and the side plate 320 has multiple second buckles. The mounting slots 180 correspond one-to-one with the first and second buckles. The first and second buckles engage with the mounting slots 180, thereby allowing the first cover 100 and the end plate 310 of the battery module to be connected, and the first cover 100 and the side plate 320 to be connected.

[0063] The first and second latches can refer to protruding latches, which generally mate with slots to allow for detachable connection between the latching component and the slotting component. The mounting slot 180 can refer to a groove-shaped structure suitable for the engagement of the first and second latches.

[0064] The end plate 310 of the battery module can refer to the metal plates at both ends of the battery module, which can be made of aluminum alloy, thereby fixing the battery cell, maintaining the position of the battery cell in the module, and withstanding the mechanical impact and vibration that the battery module may be subjected to during transportation and use.

[0065] The side plate 320 of the battery module can refer to the metal plates on both sides of the battery module, which can be used in conjunction with the end plate 310 to protect the battery cells. After the mounting slot 180 on the first cover 100 engages with the first buckle on the end plate 310 and the second buckle on the side plate 320 in the battery module, the first cover 100 and the battery module can be detachably connected.

[0066] In some embodiments, the first cover 100 is provided with a glue groove, the end plate 310 in the battery module is provided with a first glue strip 312, the side plate 320 is provided with a second glue strip 322, and the glue groove corresponds to the first glue strip 312 and the second glue strip 322. The glue groove can refer to a structure for accommodating glue or a glue strip, and the first glue strip 312 and the second glue strip 322 can cooperate with the glue groove, so that the glue groove on the first cover 100 and the first glue strip 312 on the end plate 310 are clamped, and the glue groove on the first cover 100 and the second glue strip 322 on the side plate 320 are clamped, thereby forming a sealed space between the first cover 100 and the end plate 310 and the side plate 320 of the battery module.

[0067] Figure 6 The sealing structure provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the buckle 210 of the first cover 100 is clamped with the buckle groove 120 of the second cover 200, the sealing strip 220 of the second cover 200 is tightly pressed in the sealing groove of the first cover 100, the sealing glue 131 is left between the sealing strip 220 and the sealing groove, and the second glue strip 322 of the side plate 320 is clamped in the glue groove of the first cover 100, so that the second cover 200 and the first cover 100 are tightly connected, the first cover 100 and the side plate 320 are tightly connected, and the sealing property of the entire battery module is enhanced. Figure 6

[0068] The embodiments of the present application also provide another battery module, which can include the battery module cover in the embodiments of the present application. Thus, the sealing property of the battery module is significantly improved, and stable performance is ensured in diversified working environments. At the same time, the battery module simplifies the sealing process, effectively reduces the time and cost consumption in the production process. In addition, the optimized communication interface layout further improves the data transmission efficiency of the battery module, and enhances the application potential of the battery module in the fields of smart grid, electric vehicles and other high-tech fields. This innovative scheme not only improves the product performance, but also opens up new possibilities for the future development of the battery module.

[0069] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms “mounting”, “connection” and “connection” should be understood in a broad sense, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0070] ​In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. The exemplary description of the above terms in the present specification does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of differentiation, and are not used to limit the scope of the embodiments of the present application.

[0072] It can be understood that the size of the serial numbers of the above processes in the embodiments of the present application does not mean the order of execution, and the execution order of the processes should be determined according to their functions and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0073] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A battery module cover, characterized in that, include: A first cover (100) is provided on the opening of the cell cavity in the battery module. The first cover (100) has a plurality of cell ports (110) that communicate with the cell cavity in the battery module (300). The cells in the battery module (300) are disposed in the cell cavity through the cell ports (110). A second cover (200) is disposed over the cell opening (110) of the first cover and is detachably and sealed to the first cover (100), wherein the sealed connection between the second cover (200) and the first cover (100) is arranged around a plurality of the cell openings (110).

2. The battery module cover according to claim 1, characterized in that, The first cover (100) has a buckle groove (120), and the second cover (200) has a buckle (210). The first cover (100) is detachably connected to the buckle (210) on the second cover through the buckle groove (120).

3. The battery module cover according to claim 1, characterized in that, A sealed cavity communicating with the battery cell port (110) is provided between the first cover (100) and the second cover (200); The first cover (100) is provided with a sealing groove (130) surrounding the sealing cavity, and the sealing groove (130) contains sealant (131); The second cover (200) is provided with a sealing strip (220) surrounding the sealing cavity, wherein the sealing strip (220) is detachably snapped into the sealing groove (130), and the sealing strip (220) is sealed to the sealant (131).

4. The battery module cover according to claim 3, characterized in that, An FPC bracket (140) is provided inside the sealed cavity. The FPC bracket (140) is located outside the battery module cover through an FPC opening (141) opened on the sealing groove (130), and the FPC bracket (140) and the FPC opening (141) are sealed together.

5. The battery module cover according to claim 3, characterized in that, The sealed cavity is provided with an output aluminum busbar (152), which is installed on the output aluminum busbar bracket (150) through an aluminum busbar opening (151) on the sealing groove (130). The output aluminum busbar (152) and the output aluminum busbar bracket (150) are sealed together, and the output aluminum busbar bracket (150) is fixedly connected to the first cover (100).

6. The battery module cover according to claim 5, characterized in that, The first cover (100) is provided with a plurality of series aluminum busbar slots (160), each series aluminum busbar slot (160) corresponds to at least one set of battery cell ports (110), and a series aluminum busbar (153) is also provided in the series aluminum busbar slot (160). The battery cells in the battery cell ports (110) are electrically connected through the series aluminum busbar (153) and the output aluminum busbar (152).

7. The battery module cover according to claim 3, characterized in that, The first cover (100) has multiple explosion-proof openings (170) that communicate with the sealed cavity.

8. The battery module cover according to claim 1, characterized in that, The outer side of the first cover (100) is provided with a plurality of mounting slots (180). The end plate (310) of the battery module (300) is provided with a plurality of first buckles (311), and the side plate (320) is provided with a plurality of second buckles (321). The mounting slots (180) correspond to the first buckles (311) and the second buckles (321), and the first buckles (311) and the second buckles (321) are engaged in the mounting slots (180).

9. The battery module cover according to claim 8, characterized in that, The first cover (100) is provided with a glue groove (190), the end plate (310) of the battery module (300) is provided with a first glue strip (312), and the side plate (320) is provided with a second glue strip (322). The glue groove (190) corresponds to the first glue strip (312) and the second glue strip (322), and the glue groove (190) is engaged with the first glue strip (312) and the second glue strip (322).

10. A battery module, characterized in that, Includes the battery module cover as described in any one of claims 1-9.

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