CN220233394U

CN220233394U - Battery module

Info

Publication number: CN220233394U
Application number: CN202321770891.XU
Authority: CN
Inventors: 杨桧; 赵毅; 叶宏
Original assignee: Tai Shen Technology Shenzhen Co ltd
Current assignee: Tai Shen Technology Shenzhen Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2023-12-22
Anticipated expiration: 2033-07-06

Abstract

The application belongs to the battery field, especially relates to a battery module, and this battery module includes battery module body, interface arrangement and film type pressure sensing piece. The battery module body comprises a shell and a plurality of electric cores accommodated in the shell, the interface device is fixed on the outer side of the shell, the film type pressure sensing sheet is partially clamped between the adjacent electric cores to obtain the expansion force of the electric cores, and the film type pressure sensing sheet partially extends out of the shell and is connected with the interface device. The battery module is characterized in that the interface device connected with the film type pressure sensing sheet is fixed on the outer side of the shell, so that the interface device is integrated with the battery module body, and the interface device is prevented from falling off in the transportation and use processes of the battery module.

Description

Battery module

Technical Field

The application relates to the technical field of batteries, in particular to a battery module.

Background

With the development of industrial technology, the thin film type sensing sheet is widely applied to the detection of industrial equipment due to the advantages of light weight, good flexibility and ductility, such as the fields of wearable electronic equipment, robots, industrial detection, scientific research and the like.

At present, in the battery module with expansion force detection, the thin film type pressure sensing sheet needs to be integrated between the electric cores to detect the expansion force of the electric cores, and the interface device butted with the thin film type pressure sensing sheet is usually placed on one side of the battery module body, and the interface device is used for transmitting the detection result to the BMS system (Battery Management System ), however, the interface device placed on one side cannot be well integrated with the battery module body, so that the interface device is easy to fall off, and the battery module body and the thin film type pressure sensing sheet are inconvenient to transport after being installed.

Disclosure of Invention

The embodiment of the application provides a battery module for solve current interface arrangement can not integrate with the battery module body well, easily cause interface arrangement to drop, be inconvenient for battery module body and film pressure sensing piece accomplish the technical problem of transportation after the installation.

To achieve the above object, the present application provides a battery module, including:

the battery module body comprises a shell and a plurality of battery cores accommodated in the shell;

an interface device fixed on the outer side of the shell; and

the film type pressure sensing sheet is partially clamped between adjacent electric cores to acquire the expansion force of the electric cores, and partially extends out of the shell and is connected with the interface device.

Optionally, the interface device comprises:

the shell is internally provided with a containing cavity, and a notch communicated with the containing cavity is formed in the shell; and

the circuit board is accommodated in the accommodating cavity and is provided with a butt joint port for connecting the film type pressure sensing piece and a wireless transmission module for wireless communication with external equipment, and the butt joint port is exposed out of the notch.

Optionally, the interface device further comprises a cover detachably connected with the housing;

when the cover body is fixed on the shell body, the cover body shields the butt joint port and forms a channel with the notch for the thin film type pressure sensing sheet to pass through; when the cover body is detached from the shell, the butt joint port is exposed out of the notch.

Optionally, the cover body comprises a vertical plate and a transverse plate which are connected with each other, and an included angle is formed between the vertical plate and the transverse plate; the notch comprises a vertical opening and a transverse opening which are communicated, and the butt joint port is arranged corresponding to the transverse opening; when the cover is secured to the housing, the risers cover the vertical openings and the cross-plates cover portions of the lateral openings and form channels with the housing.

Optionally, the cover and the shell are connected by a fastener and/or a buckle.

Optionally, the circuit board is further provided with a switch, an opening corresponding to the switch is arranged on the shell, and the wireless transmission module can be controlled to be opened or closed by controlling the switch.

Optionally, the circuit board is further provided with a signal indicator for indicating the working state of the interface device, and the shell is provided with a through hole corresponding to the signal indicator.

Optionally, the housing includes a first housing and a second housing that are connected to each other, and the first housing and the second housing enclose a receiving chamber.

Optionally, the battery module further includes a carrier plate, the interface device is fixed on the carrier plate, and the carrier plate is fixed on the outer side of the housing.

Optionally, a first threaded hole is formed in one side of the interface device, a second threaded hole is formed in the outer side of the shell, a countersunk hole corresponding to the first threaded hole and a through hole corresponding to the second threaded hole are formed in the bearing plate, and a screw rod of the first bolt penetrates through the countersunk hole and is screwed into the first threaded hole, so that the interface device is fixed on the bearing plate; the screw rod of the second bolt passes through the through hole and is screwed with the second threaded hole so as to fix the bearing plate on the shell.

The beneficial effect of the battery module that this application provided lies in: compared with the prior art, the battery module of this application is through fixing the interface arrangement who is connected with film pressure sensing piece in the outside of shell for interface arrangement and battery module body integrate mutually, avoid interface arrangement to take place to drop in battery module's transportation and use.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art 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.

Wherein:

fig. 1 is a schematic view illustrating an overall structure of a battery module according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of an interface device according to an embodiment of the present application;

FIG. 3 is a schematic view of the interface device of FIG. 2 with the cover removed from the housing;

FIG. 4 is a side view of an interface device shown in an embodiment of the present application;

FIG. 5 is a front view of an interface device according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of an interface device at a notch shown in an embodiment of the present application;

FIG. 7 is a rear view of an interface device shown in an embodiment of the present application;

FIG. 8 is a schematic view of a carrier plate according to an embodiment of the present disclosure;

fig. 9 is a schematic structural view of an interface device fixed on a carrier plate according to an embodiment of the present application.

Description of main reference numerals:

100. a battery module body; 110. a housing;

200. an interface device; 2001. a receiving chamber; 210. a housing; 2101. a notch; 21011. a vertical opening; 21012. a lateral opening; 2102. a channel; 2103. an opening; 2104. a through hole; 2105. a first threaded hole; 211. a first housing; 21101. a first connection hole; 2111. a fixing seat; 211101, a first fixing hole; 212. a second housing; 21201. a second connection hole; 220. a circuit board; 2201. a limiting hole; 221. a docking port; 222. a switch; 223. a signal indicator light; 230. a cover body; 2301. a second fixing hole; 231. a riser; 232. a cross plate;

300. a thin film pressure sensing sheet;

400. a carrying plate; 401. a countersunk hole; 402. and (5) a via hole.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many other different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore 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 such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings by way of example, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

The embodiment of the application provides a battery module, as shown in fig. 1, which includes a battery module body 100, an interface device 200, and a film type pressure sensing sheet 300. The battery module body 100 includes a case 110 and a plurality of battery cells (not shown) accommodated in the case 110. The interface device 200 is fixed to the outside of the housing 110. The film pressure sensing chip 300 is partially sandwiched between adjacent cells to obtain the expansion force of the cells, and partially extends out of the housing 110 and is connected to the interface device 200.

In the embodiment of the application, the battery module fixes the interface device 200 connected with the film type pressure sensing sheet 300 on the outer side of the housing 110, so that the interface device 200 is integrated with the battery module body 100, and the interface device 200 is prevented from falling off during the transportation and use of the battery module.

It can be understood that the film pressure sensing piece 300 includes a sensing portion and a signal transmission portion connected to the sensing portion, where the sensing portion is used to be clamped between adjacent electric cores to obtain expansion force of the electric cores, the signal transmission portion extends out of the housing 110 and is connected to the interface device 200, specifically, the signal transmission portion is provided with a signal contact, which may be a copper gold-plated circular signal contact array, a contact point is disposed at an interface of the interface device 200, and the signal contact of the film pressure sensing piece 300 is in contact with the contact point of the interface device 200 to realize electrical conduction.

In one embodiment, as shown in fig. 3 and 6, the interface device 200 includes a housing 210 and a circuit board 220. The housing 210 is provided with a housing chamber 2001 inside, and the housing 210 is provided with a notch 2101 communicating with the housing chamber 2001. The circuit board 220 is accommodated in the accommodating chamber 2001, the circuit board 220 is provided with a docking port 221 for connecting the film type pressure sensing sheet and a wireless transmission module (not shown) for wireless communication with an external device (e.g., BMS system), and the docking port 221 is exposed to the notch 2101.

It will be appreciated that, in order to achieve protection of the circuit board 220, the interface device 200 positions the circuit board 220 within the accommodating cavity 2001 of the housing 210, and, in order to facilitate docking between the docking port 221 and the thin film pressure sensing sheet, a notch 2101 is provided at a position of the housing 210 corresponding to the docking port 221.

In order to be better integrated with the battery module body, the interface device 200 and the external device are wirelessly connected through a wireless transmission module to transmit data. It can be appreciated that, by adopting such a signal transmission manner, no separate wires for connecting with external devices need to be arranged outside the housing 210, thereby reducing the arrangement of external components of the housing 210, and being more beneficial to the integration between the interface device 200 and other devices; meanwhile, in the transportation and use processes, as the wires for transmitting signals are not required to be arranged, the signal transmission is not interrupted due to disconnection of the wires, and the reliability of the signal transmission is further ensured.

Specifically, the docking port 221 includes a docking point and a movable platen rotatably disposed with respect to the docking point. The signal contact of the film type pressure sensing piece is butted with the butt contact to realize electric conduction, and the movable pressing plate is matched with the butt contact to clamp the film type pressure sensing piece between the movable pressing plate and the butt contact, so that the film type pressure sensing piece is prevented from falling off.

In a specific embodiment, as shown in fig. 2 and 3, the interface device 200 further includes a cover 230 detachably connected to the housing 210, and when the cover 230 is fixed to the housing 210, the cover 230 shields the docking port 221 and forms a channel 2102 with the notch 2101 for the thin film pressure sensing chip to pass through; when the cover 230 is detached from the housing 210, the docking port 221 is exposed to the notch 2101.

The cover 230 is detachably connected with the housing 210 to cover or expose the notch 2101, when the cover 230 is removed, the notch 2101 can be exposed, and the docking port 221 is exposed because the notch 2101 is arranged corresponding to the docking port 221, and the exposed docking port 221 is more beneficial to the connection between the docking port 221 and the film pressure sensing piece. When the cover 230 is fixedly mounted to the housing 210, the docking port 221 is shielded by the cover 230 and the thin film pressure sensing die extends from within the channel 2102.

The cover 230 and the housing 210 are detachably connected, so that the butt joint between the film type pressure sensing piece and the butt joint port 221 is facilitated; secondly, when the cover 230 is fixed on the housing 210 and the interface device 200 is fixed on the battery module body, the cover 230 and the housing 210 do not generate relative movement due to shaking of the battery module body, so that the reliability of the interface device 200 is further improved.

In a more specific embodiment, with continued reference to fig. 2 and 3, the cover 230 includes a riser 231 and a cross plate 232 that are connected to each other, with an included angle between the riser 231 and the cross plate 232; the notch 2101 includes a vertical opening 21011 and a lateral opening 21012 that are communicated, and the docking port 221 is disposed corresponding to the lateral opening 21012; when the cover 230 is secured to the housing 210, the risers 231 cover the vertical openings 21011, and the cross plates 232 cover portions of the lateral openings 21012 and form the above-described channel 2102 with the housing 210 through which the thin film pressure sensing patch passes.

Illustratively, the angle between the riser 231 and the cross plate 232 is 90 °, and when the cover 230 covers the notch 2101, the plate of the cover 230 in the horizontal direction is defined as the cross plate 232, and the plate in the vertical direction is the riser 231. The housing 210 has an upper surface and a side surface perpendicular to each other, and the upper surface and the side surface of the housing 210 are respectively missing one and communicate to form a communicating lateral opening 21012 and a vertical opening 21011. When the cover 230 covers the notch 2101, the cross plate 232 of the cover 230 is flush with the upper surface of the housing 210, and the riser 231 of the cover 230 is flush with the side surface of the housing 210.

It can be appreciated that the transverse opening 21012 and the vertical opening 21011 provided in this embodiment are openings with different orientations, and by providing the openings with different orientations, the thin film pressure sensing chip is more convenient to dock with the docking port 221 after the cover 230 is detached from the housing 210. The butt joint port 221 is arranged corresponding to the transverse opening 21012, so that the insertion of the film type pressure sensing piece along the vertical direction is facilitated, and the inconvenience of insertion in the horizontal direction is avoided.

In a particular embodiment, the cover 230 is coupled to the housing 210 by fasteners and/or snaps.

Preferably, the cover 230 is detachably connected to the housing 210 by a fastener such as a screw or a bolt. It will be appreciated that the screw or bolt connection provides a stronger connection between the cover 230 and the housing 210, and also facilitates the installation and removal by the user.

As shown in fig. 3 and 6, two fixing bases 2111 extending into the vertical opening 21011 are provided on the housing 210, one first fixing hole 211101 is provided on each fixing base 2111, two second fixing holes 2301 corresponding to the two first fixing holes 211101 are provided on the riser 231 of the cover 230, wherein the first fixing holes 211101 are threaded holes, the second fixing holes 2301 are countersunk holes, and the cover 230 is placed in the notch 2101 and then passes through the second fixing holes 2301 through screws (not shown in the drawings) and is screwed to the first fixing holes 211101, so as to fix the cover 230 on the housing 210.

In a specific embodiment, as shown in fig. 2-4, the circuit board 220 is further provided with a switch 222, and the housing 210 is provided with an opening 2103 corresponding to the switch 222, so that the switch 222 can be controlled to turn on or off the wireless transmission module.

It can be appreciated that the switch 222 may be accommodated in the accommodating cavity 2001 of the housing 210, or the switch 222 passes through the opening 2103 to be exposed from the accommodating cavity 2001, and a user controls the wireless transmission module to be turned on or off by pressing or toggling the switch 222, and when not in use, the wireless transmission module can be turned off by the switch 222, so as to save power and prolong the endurance time of the interface device 200.

In a specific embodiment, as shown in fig. 3 and 5, the circuit board 220 is further provided with a signal indicator 223 for indicating the operation state of the interface device 200, and the housing 210 is provided with a through hole 2104 corresponding to the signal indicator 223.

The signal indicator lamp 223 plays an indicating role, and when the signal indicator lamp 223 is lighted, a user can observe through the through hole 2104. The signal indicator 223 is used for indicating the docking state of the thin film pressure sensing piece and the docking port 221 and/or the working state of the interface device 200, for example, the interface device 200 is in a signal on state with the thin film pressure sensing piece, the interface device 200 is in a signal off state with the thin film pressure sensing piece, etc.

It should be noted that, the circuit board 220 may be provided with a plurality of signal indicator lamps 223 to indicate different states respectively; a single beacon 223 may also be provided to indicate different conditions by different flashing conditions or colors of beacon 223. The number of the signal lamps 223 is not particularly limited herein.

In a specific embodiment, as shown in fig. 2-4 and 6, the housing 210 includes a first housing 211 and a second housing 212 connected to each other, and the first housing 211 and the second housing 212 enclose a receiving chamber 2001.

The housing 210 is configured to be formed of two parts that are combined to facilitate the mounting of the circuit board 220 within the housing 210 when the interface device 200 is assembled.

Specifically, the first housing 211 and the second housing 212 may be detachably connected by a connection method such as a bolt connection, a bayonet connection, or a magnetic connection, or may be fixedly connected by an adhesive method or an ultrasonic welding method. Preferably, the first housing 211 and the second housing 212 are detachably connected through bolts or screws, so that the connection reliability is ensured, and the convenience of the user in maintenance and replacement of the circuit board 220 is further improved.

As shown in fig. 3 and 6, the first housing 211 and the second housing 212 are rectangular cover shapes, the first housing 211 and the second housing 212 are butted to form a holding cavity 2001 and a notch 2101, four corners of the first housing 211 are respectively provided with a first connecting hole 21101, four corners of the second housing 212 are provided with four second connecting holes 21201 corresponding to the first connecting holes 21101 one by one, wherein the first connecting holes 21101 are countersunk holes, the second connecting holes 21201 are threaded holes, the circuit board 220 is clamped between the first housing 211 and the second housing 212, a limiting hole 2201 corresponding to the first connecting holes 21101 and the second connecting holes 21201 is arranged on a board body of the circuit board 220, and a screw rod of the screw sequentially penetrates through the first connecting holes 21101 and the limiting holes 2201 and is in threaded connection with the second connecting holes 21201, so that the assembly of the interface device 200 is realized. As set forth above, the overall structure can be made more compact while fixing the circuit board 220, which is more advantageous for the integration between the interface device 200 and the battery module body.

In one embodiment, as shown in fig. 1, the battery module further includes a carrier plate 400, the interface device 200 is fixed on the carrier plate 400, and the carrier plate 400 is fixed on the outer side of the housing 110.

It can be understood that if the housing 210 is directly mounted on the casing 110 of the battery module body 100, the mounting component needs to be disposed outside the housing 210 of the interface device 200, which naturally increases the manufacturing difficulty and versatility of the housing 210, and in this embodiment, the housing 210 is mounted on the carrier 400 by disposing the carrier 400, and the carrier 400 is used for connecting with the casing 110, so that there is no need to dispose a mounting portion on the housing 210 for connecting with the casing 110, so that the whole housing 210 is smaller and more beneficial to integration with the battery module body 100; meanwhile, when the battery module body 100 corresponds to different structures, the different battery module bodies 100 can be adapted only by changing the bearing plate 400, the structure of the housing 210 is not required to be changed, and the universality of the housing 210 is further improved.

In a specific embodiment, as shown in fig. 7 to 9, a first threaded hole 2105 is formed on one side of the interface device 200, a second threaded hole is formed on the outer side of the housing 110, a countersunk hole 401 corresponding to the first threaded hole 2105 and a through hole 402 corresponding to the second threaded hole are formed on the carrier plate 400, and a screw of a first bolt passes through the countersunk hole 401 and is screwed to the first threaded hole 2105, so that the interface device 200 is fixed on the carrier plate 400; the screw of the second bolt passes through the through hole 402 and is screwed to the second threaded hole, so that the carrier plate 400 is fixed to the housing 110.

Through the arrangement, the bolt connection mode is adopted, so that the connection between the shell 210 and the bearing plate 400 and the connection between the bearing plate 400 and the shell 110 are firmer, and meanwhile, the assembly and the disassembly of a user are facilitated.

Further, the number of the first screw holes 2105, the counter holes 401 and the first bolts may be set to be plural to improve the connection reliability between the interface device 200 and the carrier plate 400, and the number of the second screw holes, the via holes 402 and the second bolts may be set to be plural to improve the connection reliability between the carrier plate 400 and the housing 110.

It should be understood that, in other embodiments, the interface device 200 and the carrier plate 400 may be fixed by a snap connection or an adhesive connection.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples merely represent several embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. A battery module, comprising:

an interface device fixed to the outside of the housing; and

2. The battery module according to claim 1, wherein the interface device comprises:

the circuit board is accommodated in the accommodating cavity, and is provided with a butt joint port for connecting the film type pressure sensing piece and a wireless transmission module for wireless communication with external equipment, and the butt joint port is exposed out of the notch.

3. The battery module according to claim 2, wherein the interface device further comprises a cover detachably connected to the housing;

when the cover body is fixed on the shell, the cover body shields the butt joint port and forms a channel with the notch for the thin film type pressure sensing sheet to pass through; when the cover body is detached from the shell, the butt joint port is exposed out of the notch.

4. The battery module according to claim 3, wherein the cover comprises a vertical plate and a horizontal plate connected to each other, and an included angle is formed between the vertical plate and the horizontal plate; the notch comprises a vertical opening and a transverse opening which are communicated, and the butt joint port is arranged corresponding to the transverse opening; when the cover body is fixed on the shell, the vertical plate covers the vertical opening, and the transverse plate covers part of the transverse opening and forms the channel with the shell.

5. The battery module according to claim 3, wherein the cover and the case are connected by fasteners and/or snap-fit.

6. The battery module according to claim 2, wherein the circuit board is further provided with a switch, the housing is provided with an opening corresponding to the switch, and the wireless transmission module can be controlled to be turned on or off by operating the switch.

7. The battery module according to claim 2, wherein the circuit board is further provided with a signal indicator lamp for indicating an operation state of the interface device, and the housing is provided with a through hole corresponding to the signal indicator lamp.

8. The battery module according to claim 2, wherein the housing includes a first housing and a second housing connected to each other, the first housing and the second housing being enclosed to form the accommodation chamber.

9. The battery module according to any one of claims 1 to 8, further comprising a carrier plate to which the interface device is fixed, the carrier plate being fixed to an outer side of the housing.

10. The battery module according to claim 9, wherein a first screw hole is provided at one side of the interface device, a second screw hole is provided at an outer side of the housing, a countersunk hole corresponding to the first screw hole is provided on the carrier plate, and a through hole corresponding to the second screw hole is provided, and a screw of a first bolt passes through the countersunk hole and is screwed to the first screw hole, so that the interface device is fixed on the carrier plate; the screw rod of the second bolt penetrates through the through hole and is in threaded connection with the second threaded hole, so that the bearing plate is fixed on the shell.