CN221103758U

CN221103758U - Shell structure, battery management system and battery

Info

Publication number: CN221103758U
Application number: CN202322653153.3U
Authority: CN
Inventors: 刘太强
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-06-07
Anticipated expiration: 2033-09-27

Abstract

The application provides a shell structure, a battery management system and a battery, and relates to the technical field of batteries. The housing structure is for a battery management system and includes a base, a cover, and screws. The base is provided with a threaded hole which is a through hole; the cover body cover is covered with the base to define a containing cavity, and a screw through hole is formed in the cover body; the screw is provided with a screw rod section which is connected with the screw hole through threads after passing through the screw through hole. According to the application, the hole bottom of the conical structure of the threaded hole and the blind end of the threaded hole are omitted, so that the threaded hole is in a through hole structure, and then the threaded hole has the length equal to that of the related technology and in threaded connection with the screw, so that the cover body and the base can be firmly connected into a whole, the height dimension of the shell structure can be reduced, the miniaturization of the battery pack volume can be realized, and the arrangement of all parts in the battery pack can be more compact.

Description

Shell structure, battery management system and battery

Technical Field

The application relates to the technical field of batteries, in particular to a shell structure, a battery management system and a battery.

Background

The Battery management system used in the new energy industry has a high housing height, which results in a high finished BMS (Battery MANAGEMENT SYSTEM) product formed after the Battery management system is assembled with a circuit board. This makes the battery pack space occupied by the BMS in the height direction relatively large, which affects the miniaturization of the battery pack, and is disadvantageous to the arrangement of other components in the battery pack.

Disclosure of utility model

The embodiment of the application provides a shell structure, a battery management system and a battery, which are used for solving the technical problem that the miniaturization of a battery pack is affected due to the fact that the shell height of the battery management system is high in the related art.

In a first aspect, embodiments of the present application provide a housing structure for a battery management system, including a base, a cover, and a screw. The base is provided with a threaded hole which is a through hole; the cover body and the base are covered to define a containing cavity, and a screw through hole is formed in the cover body; the screw is provided with a screw rod section which is connected with the screw hole through threads after passing through the screw through hole.

In an embodiment, the base includes bottom plate and spliced pole, and the lid closes with the bottom plate lid, and the spliced pole sets up on the bottom plate and is close to one side of lid, and the screw hole sets up in the spliced pole, and screw hole and bottom plate deviate from one side intercommunication of lid.

In one embodiment, the bottom plate is provided with a first through hole, and the connecting column is inserted into the first through hole and fixedly connected with the bottom plate.

In one embodiment, the connection post is a clinch stud.

In one embodiment, a contact post is protruded on one side of the cover body facing the base, and the screw through hole penetrates through the contact post.

In one embodiment, the screw vias are countersunk holes and the screws are countersunk screws.

In an embodiment, the cover body comprises a ring body and an end plate, wherein one end of the ring body is covered by the end plate, the other end of the ring body is covered with the base, and the screw through hole is formed in the end plate.

In an embodiment, the inner peripheral surface of the ring body is provided with a contact rib, the contact rib is provided with a first side and a second side which are oppositely arranged, the first side is connected with the inner peripheral surface of the ring body, the second side is an inclined surface, and the distance between the second side and the first side is gradually increased along the direction away from the base.

In a second aspect, an embodiment of the present application provides a battery management system, including a PCBA board and the foregoing housing structure, where the PCBA board is disposed in the accommodating cavity, and the PCBA board is provided with a second through hole, and the screw section is threaded with the threaded hole after passing through the screw through hole and the second through hole.

In a third aspect, embodiments of the present application further provide a battery, including the foregoing battery management system.

The embodiment of the application has the beneficial effects that:

In the embodiment of the application, the blind end of the threaded hole and the hole bottom of the conical structure of the threaded hole are omitted, so that the threaded hole is arranged to be of a through hole structure, and then the threaded hole is provided with the length equal to that of the related technology and in threaded connection with the screw, so that the cover body and the base can be firmly connected into a whole, the height dimension of the shell structure can be reduced, the size miniaturization of the battery pack can be realized, and the arrangement of all parts in the battery pack can be more compact.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the connection of a cover and a base in the related art;

FIG. 2 is a schematic structural view of a housing structure provided by an embodiment of the present application;

FIG. 3 is an exploded pictorial view of a housing structure provided by an embodiment of the present application;

FIG. 4 is a schematic view of the connection of the cover and the base provided by the embodiment of the application;

FIG. 5 is a schematic view of a base according to an embodiment of the present application;

FIG. 6 is a schematic view of a base in another view provided by an embodiment of the present application;

FIG. 7 is an enlarged view of a portion of FIG. 6;

FIG. 8 is a schematic diagram of the connection of a connection post to a base plate provided by an embodiment of the present application;

fig. 9 is a schematic structural view of a cover provided by an embodiment of the present application;

fig. 10 is an enlarged view at B in fig. 9.

FIG. 11 is an exploded view of yet another housing structure provided by an embodiment of the present application;

FIG. 12 is an exploded view of another housing structure provided by an embodiment of the present application;

FIG. 13 is an exploded view of yet another housing structure provided by an embodiment of the present application;

fig. 14 is a schematic structural diagram of a battery management system according to an embodiment of the present application;

FIG. 15 is a top view of FIG. 14;

fig. 16 is a cross-sectional view taken along A-A in fig. 15.

Description of the drawings:

1-a housing structure; 2-PCBA board;

10-a cover body; 20-a base; 30-screws; 40-accommodating chambers; 50-insulating sheets; 60-a heat conducting block;

101-screw vias; 102-ring body; 1021-notch; 103-end plates; 104-contact columns; 105-contact ribs; 1051-a second side; 106-transverse ribs; 107-longitudinal ribs; 108-positioning blocks;

201-a threaded hole; 202-a bottom plate; 203-connecting columns; 204-positioning holes; 205-collar; 206-baffle; 207-positioning the port; 208-a first via;

501-mounting through holes.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In describing embodiments of the present application, words such as "exemplary" or "such as" are used to mean illustrated, described, or described. Any embodiment or design described as "exemplary" or "such as" in an embodiment of the application is not necessarily to be construed as preferred or advantageous over another embodiment or design. The use of words such as "example" or "such as" is intended to present relative concepts in a clear manner.

Before describing the housing structure, the battery management system and the battery of the present application, related art information of the embodiment of the present application is first described.

As shown in fig. 1, fig. 1 is a schematic diagram of connection between a cover and a base in the related art. In the related art, a threaded hole matched with a screw on the base is a blind hole. Limited by the drill bit structure for processing the threaded holes, the bottom of the blind holes is of a conical structure. This conical structure occupies a part of the height dimension of the housing structure, but it does not have any functional role. Also, in order to make the screw hole a blind hole structure, the base needs to have a certain thickness dimension at the blind end of the screw hole to close the screw hole. The blind end occupies a portion of the height dimension of the housing structure. The blind end has no other function except for closing the threaded hole. This results in an unnecessary height dimension of the housing structure.

Based on this, the embodiment of the present application provides a case structure, a battery management system, and a battery, and is described in detail by the following.

Referring to fig. 2 to 4, fig. 2 is a schematic structural view of a housing structure 1 according to an embodiment of the present application, fig. 3 is an exploded view of the housing structure 1 according to an embodiment of the present application, and fig. 4 is a schematic connecting view of a cover and a base according to an embodiment of the present application. The embodiment of the present application provides a housing structure 1, which housing structure 1 is used for a battery management system, and includes a base 20, a cover 10, and screws 30. The base 20 is provided with a threaded hole 201, and the threaded hole 201 is a through hole. The cover 10 and the base 20 are covered to define a containing cavity 40, and a screw through hole 101 is arranged on the cover 10. The screw 30 has a shank portion that is threaded into the threaded bore 201 after passing through the screw through hole 101, as shown in fig. 4.

It will be appreciated that when the housing structure 1 is used in a battery management system, the PCBA board is mounted in the receiving cavity 40. Specifically, the screw 30 passes through the screw via hole 101 and the PCBA board and is screwed to the screw hole 201. The threaded hole 201 is of a through hole structure, so that the hole bottom of the conical structure and the blind end of the threaded hole 201 are omitted. According to the use condition, a plurality of screws 30, and a plurality of screw through holes 101 and screw holes 201 corresponding to the screws 30 may be provided to improve the stability of the connection between the cover 10 and the base 20.

In the battery management system, the PCBA board is one of core components for controlling and monitoring the working state of the battery, collecting and processing data and realizing a protection function. It typically contains a processor, sensors, interface circuitry, etc., and is connected and in communication with the battery. The PCBA manages the charge and discharge process of the battery, monitors the working state of the battery, and ensures the safety, stability and high-efficiency performance of the battery.

Illustratively, the cover 10 is a plastic piece and is formed by injection molding. The base 20 is a sheet metal part. There are 6 screws 30. Correspondingly, there are 6 screw vias 101 and screw holes 201, and all are distributed in a matrix.

In this embodiment, by eliminating the hole bottom of the conical structure of the threaded hole 201 and the blind end of the threaded hole 201, the threaded hole 201 is set to be of a through hole structure, so that the threaded hole 201 has a length equal to that of the related art and in threaded connection with the screw 30, and the cover body 10 and the base 20 can be firmly connected into a whole, and the height dimension of the housing structure 1 can be reduced, thereby being beneficial to realizing the miniaturization of the volume of the battery pack, and further enabling the arrangement of each component in the battery pack to be more compact.

Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of a base 20 according to an embodiment of the present application, and fig. 6 is a schematic structural diagram of a base 20 according to another view direction according to an embodiment of the present application. In one embodiment, the base 20 includes a base plate 202 and a connecting post 203. The cover body 10 is covered on the bottom plate, the connecting column 203 is arranged on the bottom plate 202 and is close to one side of the cover body 10, the threaded hole 201 is arranged on the connecting column 203, and the threaded hole 201 is communicated with one side of the bottom plate 202, which is away from the cover body 10.

In this embodiment, by disposing the threaded hole 201 on the connecting post 203, the base 20 can obtain the screw thread with the required length, and the thickness of the bottom plate 202 can be controlled, so as to control the height dimension of the housing structure 1 and reduce the material consumption of the base 20.

Referring to fig. 7 and 8, fig. 7 is a partial enlarged view of fig. 6, and fig. 8 is a schematic diagram illustrating connection between the connection post 203 and the bottom plate 202 according to an embodiment of the present application. In one embodiment, the base plate 202 is provided with a first through hole 208. The connecting post 203 is inserted into the first through hole 208 and is fixedly connected with the bottom plate 202.

It is understood that the connection posts may be affixed to the base plate 202 by riveting, welding, adhesives, or the like.

In this embodiment, by inserting the connection post 203 on the bottom plate 202, connection posts 203 with different heights and threads with different pitches and different radii can be configured according to different requirements, so as to improve the adjustability of the housing structure 1.

Illustratively, the connection post 203 is a standoff. By adopting the connecting column 203 as a press riveting stud and press riveting the connecting column on the bottom plate 202, the structure of the base 20 is simpler, and the production efficiency of the base 20 is improved.

Wherein, one end of the hole wall of the first through hole 208 facing away from the cover 10 is provided with a positioning hole 204. The positioning holes 204 are hexagonal holes. A collar 205 is provided at an end of the outer circumference of the connection post 203 facing away from the cover 10. The outer circumference of collar 205 is hexagonal in configuration. Collar 205 mates with locating hole 204 as shown in fig. 7. Alternatively, collar 205 is integrally formed with connection post 203, as shown in FIG. 8. The collar 205 with hexagonal structure is arranged on the connecting post 203, so that the connecting post 203 can be prevented from rotating in the first through hole, and then the screw 30 can be prevented from loosening. Thereby, the connection stability between the cover 10 and the base 20 is improved.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a cover 10 according to an embodiment of the application. In one embodiment, the cover 10 has a contact post 104 protruding from a side of the cover facing the base 20, and the screw via 101 penetrates the contact post 104.

It will be appreciated that when the housing structure 1 is used in a battery management system, a PCBA board is disposed between the base 20 and the cover 10, one side of the PCBA board may be in direct contact with the base 20 or in contact with the base 20 through an insulating sheet or a thermally conductive block. The contact posts 104 abut against the PCBA plate on the side facing the cover 10. From this, fix PCBA board between base 20 and lid 10, prevent that PCBA board from rocking for housing structure 1, can promote the stability of housing structure 1 to PCBA board's fixed in succession.

Illustratively, the cover 10 is an injection molded piece, and the contact posts 104 are integrally formed with the cover 10. The contact posts 104 are cylindrical in configuration and are vertically disposed on the end plate 103. The outer circumference of the contact beam 104 is provided with a plurality of connection ribs at intervals for enhancing the connection strength between the contact beam 104 and the end plate 103.

Illustratively, the interior of the contact stud 104 is stepped in shape, i.e., the screw via 101 is a countersunk hole. Specifically, the contact post 104 includes a first through hole and a second through hole that are sequentially communicated, the first through hole is located at one end of the second through hole facing away from the base 20, and the diameter of the first through hole is larger than that of the second through hole, so that the screw through hole 101 is a countersunk hole. Thus, the head of the screw 30 may be positioned in the first through hole, one end of the shank of the screw 30 is positioned in the second through hole, and the other end is screwed with the screw hole 201.

In this embodiment, the contact pillars 104 can avoid the problem that the cover 10 needs to have a certain thickness due to the screw via holes 101, so that the overall thickness of the cover is increased to affect the height of the housing structure 1. Thus, by providing the contact posts 104, it is not only convenient to control the height dimension of the housing structure 1, but also possible to reduce the material consumption of the cover 10.

Referring to fig. 4, the screw via 101 is a countersunk hole. The screw 30 is a countersunk screw 30.

The screw 30 is a countersunk screw 30, which can further reduce the height of the housing structure 1, and is beneficial to realizing the miniaturization of the battery pack adopting the housing structure.

Referring to fig. 9, in an embodiment, the cover 10 includes a ring 102 and an end plate 103, the end plate 103 covers one end of the ring 102, the other end of the ring 102 is covered with the base 20, and the screw via 101 is disposed in the end plate 103.

It will be appreciated that the contact posts 104 are fixedly secured to the end plate 103, and that the contact posts 104 are illustratively integrally formed with the end plate 103. Screw vias 101 extend through the contact posts 104.

Illustratively, the end plate 103 is provided with a plurality of transverse ribs 106 and longitudinal ribs 107 on a side facing the ring 102, and the transverse ribs 106 and longitudinal ribs 107 are staggered to enhance the strength of the cover 10.

In the present embodiment, by providing the cover 10 in the above-described structure, the cover 10 is simple in structure and easy to manufacture, thereby controlling manufacturing costs.

Referring to fig. 10, fig. 10 is an enlarged view at B in fig. 9. In an embodiment, the contact ribs 105 are disposed on the inner peripheral surface of the ring body 102, and the contact ribs 105 have a first side and a second side 1051 disposed opposite to each other, the first side is connected to the inner peripheral surface of the ring body 102, the second side 1051 is an inclined surface, and the distance between the second side 1051 and the first side increases gradually along the direction away from the base 20.

Optionally, the contact ribs 105 are integrally formed with the ring body 102, and there are a plurality of contact ribs 105.

In the present embodiment, when the PCBA board is provided between the base 20 and the cover 10, the second side 1051 abuts the peripheral edge of the PCBA board. The contact ribs 105 may share the pressure of the housing structure 1 for fastening the PCBA plate, and in turn reduce the pressure of the contact posts 104 against the PCBA plate, so that the PCBA plate is uniformly stressed and is smaller in unit area, thereby improving the protection of the PCBA plate.

Referring to fig. 11, fig. 11 is an exploded view of a housing structure 1 according to another embodiment of the present application. In an embodiment, the housing structure 1 further comprises an insulating sheet 50. The insulating sheet 50 is disposed on one side of the base 20 close to the cover 10.

The insulating sheet 50 is illustratively a plastic material. One side of the insulating sheet 50 is adhered to the base 20 by glue, and the other side is adhered to the PCBA board by glue. The PCBA board is located between the insulating sheet 50 and the cover 10.

In the present embodiment, the insulating sheet 50 plays a role of insulation, separation. The insulating sheet 50 is used to shield electromagnetic interference, so that the electromagnetic interference can be prevented from affecting the normal operation of the circuit of the PCBA board.

Referring to fig. 12, fig. 12 is an exploded view of another housing structure 1 according to an embodiment of the present application. In an embodiment, the housing structure 1 further comprises a heat conducting block 60. One side of the heat conducting block 60 is in heat conducting contact with one side of the base 20 close to the cover 10.

Illustratively, the thermally conductive block 60 is a thermally conductive silicone material. The heat conducting block 60 is attached to the base 20 and the surface of the electronic device on the PCBA board that needs to dissipate heat. The PCBA board is located between the thermally conductive block 60 and the cover 10.

In this embodiment, the heat conducting block 60 transfers the heat of the PCBA board to the base 20 to improve the heat dissipation efficiency of the PCBA board, thereby ensuring the normal operation of the electronic devices on the PCBA board and improving the life of the electronic devices on the PCBA board.

Referring to fig. 13, fig. 13 is an exploded view of still another housing structure 1 according to an embodiment of the present application. In other embodiments, the housing structure 1 further comprises an insulating sheet 50 and a heat conducting block 60. The insulating sheet 50 is disposed on one side of the base 20 close to the cover 10. The insulating sheet 50 is provided with a mounting through hole 501, the heat conducting block 60 is arranged in the mounting through hole 501, one side of the heat conducting block is in heat conducting contact with the base 20, and the other side of the heat conducting block is in heat conducting contact with an electronic device needing heat dissipation on the PCBA board. In this embodiment, by providing the insulating sheet 50 and the heat conducting block 60, electromagnetic interference prevention performance of the housing structure 1 can be improved, and heat dissipation of the PCBA board can be facilitated.

Referring to fig. 1, in an embodiment, a notch 1021 is disposed at an end of the ring 102 near the base 20, the base 20 is provided with a baffle 206, and the baffle 206 is disposed in the notch 1021 and partially covers the notch 1021.

Illustratively, the baffle 206 is integrally formed with the base 20. The baffle 206 may be formed by bending a sheet metal part. The notch 1021 is used for setting an external socket of the PCBA board 2, and the outer wall of the external socket is attached to one side, away from the base 20, of the baffle 206.

In this embodiment, the baffle 206 shields the lower side of the notch 1021, so that external dust and the like can be prevented from entering the inside of the housing structure 1 through the gap between the external connection socket and the bottom plate, and the dustproof performance of the housing structure 1 is improved.

Referring to fig. 2, in an embodiment, a positioning opening 207 is provided on the periphery of the base 20, and a positioning block 108 is provided on the periphery of the cover 10, where the positioning block 108 is inserted into the positioning opening 207.

In this embodiment, by setting the positioning opening 207 and the positioning block 108 inserted into the positioning opening 207, in the assembly process of the cover body 10 and the base 20, the convenience and precision of the assembly between the cover body 10 and the base 20 are improved by matching the positioning opening 207 and the positioning block 108, and then the assembly efficiency of the housing structure 1 is improved.

Referring to fig. 14 to 15, fig. 14 is a schematic structural diagram of a battery management system according to an embodiment of the application, and fig. 15 is a top view of fig. 14. An embodiment of the present application provides a battery management system, which includes a PCBA board 2 and the foregoing housing structure 1, where the PCBA board 2 is disposed in the accommodating cavity 40, a second through hole is disposed on the PCBA board 2, and a screw section is threaded with the threaded hole 201 after passing through the screw through hole 101 and the second through hole, as shown in fig. 16, and fig. 16 is a cross-sectional view along A-A in fig. 15.

It is understood that a battery management system is a system for monitoring, controlling, and protecting the operating state and performance of a battery. It is commonly used in electric vehicles, electric tools, energy storage systems, and the like, where batteries are required as energy storage devices.

The PCBA board 2 is abutted against the end of the contact post 104 on the side facing the cover 10, and is abutted against the end of the connection post 203 on the side facing away from the cover 10, and is in contact with the second side 1051 of the contact rib 105 at its periphery.

In this embodiment, by eliminating the hole bottom of the conical structure of the threaded hole 201 and the blind end of the threaded hole 201, the threaded hole 201 is set to be of a through hole structure, so that the threaded hole 201 has a length equal to that of the related art and in threaded connection with the screw 30, and the cover 10, the PCBA plate 2 and the base 20 can be firmly connected into a whole, and the height dimension of the battery management system can be reduced, which is beneficial to realizing the miniaturization of the battery pack, so that the arrangement of each component in the battery pack is more compact.

The embodiment of the application also provides a battery, which comprises the battery management system.

It will be appreciated that the battery also includes a battery housing, a battery cell housed within the battery housing, a cell support for supporting the battery cell, a connection assembly for securing the cell support within the housing, and a CCS assembly for electrically connecting the battery cell to the battery management system. The CCS component is an acquisition integrated piece of the battery and is used for acquiring the working information of the battery cell.

The battery may be a power battery, for example. Power batteries refer to battery systems for providing energy to electric vehicles, hybrid vehicles, and other devices requiring large-capacity energy storage. The power battery can be a lithium iron phosphate battery, a lithium ion battery, a nickel-hydrogen battery, a sodium ion battery and the like.

In this embodiment, by eliminating the hole bottom of the conical structure of the threaded hole 201 and the blind end of the threaded hole 201, the threaded hole 201 is set to be of a through hole structure, so that the threaded hole 201 has a length equal to that of the related art and in threaded connection with the screw 30, and the battery management system can be connected to be an integral component, and the height and the size of the battery management system can be reduced, thereby being beneficial to realizing the miniaturization of the battery volume and further enabling the arrangement of each component in the battery to be more compact.

The foregoing has outlined rather broadly the more detailed description of embodiments of the application, wherein the principles and embodiments of the application are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.

Claims

1. A housing structure for a battery management system, comprising:

The base is provided with a threaded hole, and the threaded hole is a through hole;

The cover body is covered with the base to define a containing cavity, and a screw through hole is formed in the cover body;

the screw is provided with a screw rod section, and the screw rod section passes through the screw through hole and is in threaded connection with the threaded hole.

2. The housing structure of claim 1, wherein the base includes a bottom plate and a connecting post, the cover is covered with the bottom plate, the connecting post is disposed on the bottom plate and near a side of the cover, the threaded hole is disposed on the connecting post, and the threaded hole is communicated with a side of the bottom plate away from the cover.

3. The housing structure of claim 2, wherein the bottom plate is provided with a first through hole, and the connecting post is inserted into the first through hole and fixedly connected with the bottom plate.

4. A housing structure according to claim 3 wherein the connection post is a clinch stud.

5. The housing structure of claim 1 wherein a contact post is provided on a side of said cover facing said base, said screw through hole extending through said contact post.

6. The housing structure of any one of claims 1-5 wherein the screw via is a countersunk hole and the screw is a countersunk screw.

7. The housing structure of any one of claims 1-5, wherein the cover comprises a ring and an end plate, the end plate covers one end of the ring, the other end of the ring is covered with the base, and the screw via is provided in the end plate.

8. The housing structure of claim 7, wherein the ring body has an inner peripheral surface provided with contact ribs having oppositely disposed first and second sides, the first side being connected to the inner peripheral surface of the ring body, the second side being inclined, and a distance between the second side and the first side gradually increasing in a direction away from the base.

9. A battery management system, comprising:

the housing structure of any one of claims 1-8;

The PCBA board is arranged in the accommodating cavity, a second through hole is formed in the PCBA board, and the screw rod section penetrates through the screw through hole and the second through hole and then is in threaded connection with the threaded hole.

10. A battery comprising the battery management system of claim 9.