Battery module and battery pack

Abstract

The utility model provides a battery module and a battery pack, the battery module comprises a shell, a support, a protection plate and a PC sheet, the support is arranged in the shell, the support is used for fixing a battery cell, the top surface of the support is provided with a convex column and a limiting part arranged in the circumferential direction, the limiting part defines a mounting space, the protection plate is arranged in the mounting space, the protection plate is provided with a via hole, and the PC sheet is arranged in the mounting space. The protruding column penetrates through the through hole, the PC piece covers the top opening of the installation space and is used for shielding the protection plate, and at least part of the PC piece abuts against the protection plate. According to the battery pack, the convex column, the limiting part and the PC piece are matched to fix the protection plate, the protection plate does not need to be positioned through screws or clamped connection, the problem that in the prior art, the protection plate is inconvenient to install is solved, and then the problem that in the prior art, the protection plate in the battery pack is inconvenient to install is solved.

Description

Technical Field

[0001] This application relates to the field of battery-related technology, and more specifically, to a battery module and a battery pack. Background Technology

[0002] With the development of new energy technologies, battery technology is also constantly improving, and the requirements for the safety performance and cost of battery packs are getting higher and higher. A battery pack is generally composed of battery modules and protection boards. The protection board can protect the battery modules, and the protection board is fixed to the battery modules by brackets on the battery modules. The existing fixing method is relatively old, and the protection pack is usually fixed by screws or by snap-fit.

[0003] When the protection board is fixed with screws, this method is cumbersome. Screw holes need to be pre-drilled on the protection board, and screws are used to lock the protection board onto the battery module bracket during assembly. Screws require material costs, and screwing requires labor costs. This method is costly, and the battery pack is prone to shaking when the screws are loose.

[0004] When the protective plate is fixed with clips, it is difficult to assemble, and the protective plate may deform or damage components when subjected to force during assembly.

[0005] As can be seen from the above, the internal protection board of the current battery pack has the problem of being inconvenient to install. Utility Model Content

[0006] The main objective of this application is to provide a battery module and battery pack to solve the problem that the internal protection board of the battery pack in the related technology is inconvenient to install.

[0007] To achieve the above objectives, according to one aspect of this application, a battery module is provided. The battery module includes a housing, a bracket, a protection plate, and a PC sheet. The bracket is disposed inside the housing and is used to fix the battery cells. The top surface of the bracket has a protruding post and a circumferentially arranged limiting part, which encloses an installation space. The protection plate is disposed inside the installation space and has a through hole. The protruding post passes through the through hole. The PC sheet is covered at the top opening of the installation space to shield the protection plate. The PC sheet at least partially abuts against the protection plate.

[0008] Furthermore, the top surface of the bracket has multiple protrusions, and the periphery of the protective plate abuts against the protrusions.

[0009] Furthermore, the inner wall surface of the limiting part has a support part arranged circumferentially, the top surface of the support part is formed as a support surface, and the PC sheet is arranged on the support surface.

[0010] Furthermore, the top surface of the housing is flush with the top surface of the PC sheet, and the outer peripheral surface of the PC sheet abuts against the inner wall surface of the housing.

[0011] Furthermore, the support has a protruding structure on the side facing the protective plate, and the protruding structure abuts against the outer peripheral wall of the protective plate.

[0012] Furthermore, the top surface of the bracket has multiple support blocks arranged circumferentially along the bracket, and the top surface of the support blocks supports the protective plate; and / or the PC sheet has one or more gaskets on the side facing the protective plate, and the gaskets abut against the top surface of the protective plate.

[0013] Furthermore, the bracket includes an upper frame and a lower frame. The top surface of the upper frame has a limiting part and a protrusion. The upper frame and the lower frame cooperate to form a mounting cavity for accommodating the battery cell. The upper frame and the lower frame are snap-fitted together or detachably connected by fasteners.

[0014] Furthermore, the housing has a clearance opening that communicates with the installation space. The battery module also includes wires and plugs. One end of the wires is connected to the protection board, and the other end of the wires extends through the clearance opening and connects to the plugs in the installation space.

[0015] Furthermore, the battery module also includes a pressure block, the top surface of the bracket has a support frame with channels for wires to pass through, and the pressure block is set on the support frame to press the wires.

[0016] To achieve the above objectives, according to another aspect of this application, a battery pack is provided, which includes the battery module described above.

[0017] By applying the technical solution of this application, the battery module adopts a protrusion and a limiting part on the top of the bracket. The protrusion matches the through hole on the protection plate to realize the positioning and installation of the protection plate. At the same time, the installation space enclosed by the limiting part accommodates the protection plate. The setting of the protrusion and the limiting part realizes the horizontal positioning of the protection plate, which helps to improve the stability of the protection plate installation.

[0018] This application uses a PC sheet to press and adhere the protective plate along the height direction of the shell, thereby achieving height-direction limiting of the protective plate and stably setting the protective plate on the bracket. The protrusion, limiting part and PC sheet cooperate to fix the protective plate, eliminating the need for screws or snap-fit ​​positioning of the protective plate, thus overcoming the problem of inconvenient installation of the protective plate in the prior art. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 A three-dimensional structural schematic diagram of the battery module of this application is shown;

[0021] Figure 2An exploded view of the battery module of this application is shown;

[0022] Figure 3 A three-dimensional structural schematic diagram of the bracket of this application is shown;

[0023] Figure 4 A schematic diagram of the top structure of the bracket of this application is shown, which has a protective plate;

[0024] Figure 5 A top view of the bracket of this application is shown;

[0025] Figure 6 A schematic diagram of the top structure of the bracket of this application is shown, without a protective plate.

[0026] The above figures include the following reference numerals:

[0027] 10. Housing; 110. Clearance opening; 20. Bracket; 210. Upper frame; 211. Limiting part; 2111. Installation space; 212. Protruding column; 213. Protrusion; 214. Support part; 2141. Support surface; 2142. Protruding structure; 215. Support frame; 216. Support block; 220. Lower frame; 30. Protective plate; 40. PC sheet; 50. Wire; 60. Insert; 70. Pressure block. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] Example 1

[0032] To address the problem of inconvenient installation of the internal protection board in existing battery packs, this application provides a battery module.

[0033] like Figures 1 to 6 As shown, the battery module includes a housing 10, a bracket 20, a protection plate 30, and a PC sheet 40. The bracket 20 is disposed inside the housing 10 and is used to fix the battery cells. The top surface of the bracket 20 has a protrusion 212 and a circumferentially arranged limiting part 211. The limiting part 211 surrounds the installation space 2111. The protection plate 30 is disposed inside the installation space 2111 and has a through hole. The protrusion 212 passes through the through hole. The PC sheet 40 is covered at the top opening of the installation space 2111 to cover the protection plate 30. The PC sheet 40 at least partially abuts against the protection plate 30.

[0034] Among them, the bracket 20 is made of plastic and is used to position the battery cell, while the protection board 30 is used to protect the stable power output of the battery cell.

[0035] Specifically, the battery module adopts a top of bracket 20 with a protrusion 212 and a limiting part 211. The protrusion 212 matches the through hole on the protection plate 30 to achieve the positioning and installation of the protection plate 30. At the same time, the installation space 2111 formed by the limiting part 211 accommodates the protection plate 30. The protrusion 212 and the limiting part 211 achieve the horizontal positioning of the protection plate 30, that is, positioning along the plane where the length and width directions of the housing 10 are located, which helps to improve the stability of the installation of the protection plate 30.

[0036] In this embodiment, the limiting part 211 is an annular plate structure extending along the height direction of the housing 10, and the annular plate structure forms the installation space 2111.

[0037] This application uses a PC sheet 40 to press and adhere the protective plate 30 along the height direction of the housing 10, thereby limiting the height of the protective plate 30 and stably setting the protective plate 30 on the bracket 20. The protrusion 212, the limiting part 211 and the PC sheet 40 cooperate to fix the protective plate 30, eliminating the need for screws or snap-fit ​​positioning of the protective plate 30, thus overcoming the problem of inconvenient installation of the protective plate 30 in the prior art.

[0038] The PC sheet 40 is also fixedly installed inside the installation space 2111. The PC sheet 40 can cover the top opening of the installation space 2111, thereby achieving the function of shielding and protecting the package. Preferably, the top surface of the PC sheet 40 is flush with the top surface of the limiting part 211.

[0039] In this embodiment, the height direction of the housing 10 is... Figure 1 As shown in the Z direction, the length direction of the shell 10 is... Figure 1 As shown in the X direction, the length direction of the housing 10 is... Figure 1 Y direction shown.

[0040] like Figures 4 to 6 As shown, the top surface of the bracket 20 also has multiple protrusions 213, and the peripheral edge of the protective plate 30 abuts against the protrusions 213.

[0041] Specifically, by setting a protrusion 213, which abuts against the peripheral edge of the protective plate 30, the protective plate 30 is positioned circumferentially, thus preventing the protective plate 30 from shaking or shifting.

[0042] In this embodiment, the plurality of protrusions 213 may be arranged at intervals along the circumference of the housing 10. Preferably, the plurality of protrusions 213 are arranged in pairs along the length and width directions, thereby achieving clamping of the protective plate 30 along the length and width directions, and thus improving the fixing effect of the protective plate 30.

[0043] In this embodiment, the top surface of the bracket 20 has a plurality of support blocks 216 arranged circumferentially along the bracket 20, and the top surface of the support blocks 216 supports the protective plate 30. The support blocks 216 support the protective plate 30 to achieve stable placement of the protective plate 30 on the bracket 20, and the support blocks 216 and the PC sheet 40 cooperate to clamp the protective plate 30 along the height direction, which is beneficial to further improve the stability of the installation of the protective plate 30 by fixing it inside the mounting space 2111 of the bracket 20 along the height direction of the housing 10.

[0044] It is understandable that there is a gap between the top surface of the protection plate 30 and the bracket 20. The interior of the gap can be used to accommodate the wire 50 and the components on the protection plate 30, so as to avoid interference.

[0045] like Figures 4 to 6As shown, the inner wall surface of the limiting part 211 has a support part 214 arranged in the circumferential direction, the top surface of the support part 214 is formed as a support surface 2141, and the PC sheet 40 is disposed on the support surface 2141.

[0046] The support portion 214 is provided in multiple ways, and the multiple support portions 214 are arranged at intervals along the circumference of the housing 10. The support surface 2141 on the multiple support portions 214 is used to support and fix the PC sheet 40, specifically by adhesive fixing of the PC sheet 40.

[0047] In this embodiment, the support part 214 is a support rib, and the top surface of the support rib is arranged parallel to the protective plate 30 so that the PC sheet 40 and the mounting plate are arranged parallel to each other, which is conducive to the stable pressing of the PC sheet 40 onto the protective plate 30.

[0048] In this embodiment, the support portion 214 is used to abut against the bottom surface of the PC sheet 40 to provide support. The top surface of the housing 10 of this application is flush with the top surface of the PC sheet 40, and the outer peripheral surface of the PC sheet 40 abuts against the inner wall surface of the housing 10.

[0049] Specifically, the top surface of the housing 10 is flush with the top surface of the PC sheet 40, and the outer peripheral surface of the PC sheet 40 abuts against the inner wall surface of the housing 10. This arrangement allows the housing 10 to surround the outside of the PC sheet 40, which helps to protect the PC sheet 40 and improves the stability of the PC sheet 40 fixed on the bracket 20.

[0050] In this embodiment, the support portion 214 has a protruding structure 2142 on the side facing the protective plate 30, and the protruding structure 2142 abuts against the outer peripheral wall of the protective plate 30.

[0051] Among them, the support part 214 is a support rib, and the end of the support rib connected to the top surface of the bracket 20 has a protruding structure 2142. The protruding structure 2142 can abut against the protective plate 30 to limit the protective plate 30, and further improve the stability of the protective plate 30 installed inside the installation space 2111.

[0052] In this embodiment, the PC sheet 40 has one or more gaskets on the side facing the protective plate 30, and the gaskets abut against the top surface of the protective plate 30.

[0053] Specifically, the gasket is made of EVA cotton, and the gasket is press-fitted against the protective plate 30 to fix the protective plate 30.

[0054] One or more gaskets are provided, which can be adapted according to the size of the PC sheet 40 and the position of the components on the protection plate 30. When multiple gaskets are provided, they are spaced apart to provide multiple contact positions with the protection plate 30, thereby improving the stability of the contact with the protection plate 30 and making the protection plate 30 less prone to displacement and shaking.

[0055] like Figures 2 to 4 As shown, the bracket 20 includes an upper bracket 210 and a lower bracket 220. The top surface of the upper bracket 210 has a limiting part 211 and a protrusion 212. The upper bracket 210 and the lower bracket 220 cooperate to form a mounting cavity for accommodating the battery cell. The upper bracket 210 and the lower bracket 220 are snapped together or detachably connected by fasteners.

[0056] The protective plate 30 is located on one side of the top surface of the upper frame 210, that is, on the side of the upper frame 210 away from the lower frame 220.

[0057] The upper bracket 20 and the lower bracket 20 are connected by a detachable structure to facilitate the removal or installation of battery cells after disassembly, and then the upper bracket 20 and the lower bracket 20 are fixed.

[0058] In one specific embodiment of this example, the upper bracket 20 and the lower bracket 20 are fixed together by snap-fit.

[0059] Specifically, the upper bracket 20 and the lower bracket 20 are connected by snap-fit. The snap-fit ​​structure of the upper bracket 20 and the lower bracket 20 does not require damage to the structural body of the upper bracket 20 and the lower bracket 20, and is convenient for installation and disassembly, which is conducive to achieving the effect of quick disassembly and quick installation.

[0060] In another specific embodiment of this example, the upper bracket 20 and the lower bracket 20 are fixed by fasteners, which may be structural components such as screws.

[0061] Specifically, using fasteners to fix the upper bracket 20 and the lower bracket 20 helps to improve the connection strength between the upper bracket 20 and the lower bracket 20, thereby ensuring the stability of the installation of the battery cell and the protection board 30.

[0062] like Figure 2 As shown, the housing 10 has a clearance opening 110 communicating with the installation space 2111. The battery module also includes a wire 50 and a plug 60. One end of the wire 50 is connected to the protection plate 30, and the other end of the wire 50 extends through the clearance opening 110 and out of the installation space 2111 to connect with the plug 60.

[0063] Specifically, a clearance opening 110 is provided on the housing 10 to allow the wire 50 to pass through, thereby avoiding interference.

[0064] Specifically, one end of the wire 50 is soldered to the protection plate 30 to achieve electrical connection with the protection plate 30, and the other end of the wire 50 passes through the clearance opening 110 to achieve electrical connection with the plug-in 60.

[0065] In this embodiment, the top surface of the bracket 20 has a support frame 215, and the support frame 215 has a channel for the wire 50 to pass through. After the wire 50 passes through the channel, it extends out of the installation space 2111 through the clearance opening 110. By setting the support frame 215, the channel on the support frame 215 has the function of limiting the wire 50, thereby preventing the wire 50 from swinging randomly inside the installation space 2111, which could lead to easy soldering failure.

[0066] To further limit the stability of the installation of the wire 50, the battery module of this embodiment also includes a pressure block 70. The top surface of the bracket 20 has a support frame 215, and the support frame 215 has a channel for the wire 50 to pass through. The pressure block 70 is disposed on the support frame 215 to press the wire 50.

[0067] The clamping block 70 is snapped onto the support frame 215. This snap-fit ​​design allows for the detachable installation of the clamping block 70, making it easy to remove when needed. In this application, the clamping block 70 presses down on the wire 50, thus securing the wire 50 within the channel. The support frame 215 and clamping block 70 design prevent the protective plate 30 from shifting vertically due to pulling the wire 50 of the plug-in 60, further ensuring the stability of the protective plate 30 installation.

[0068] In this embodiment, the pressure block 70 is made of plastic.

[0069] Example 2

[0070] This embodiment provides a battery pack, which includes the battery module from Embodiment 1. Since the battery pack in this embodiment includes the battery module, the protection board 30 of the battery pack provided in this embodiment is stably mounted on the bracket 20. The protection board 30's protection of the battery cells helps improve the stable output of the battery pack.

[0071] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0072] The battery module of this application adopts a protrusion 212 and a limiting part 211 on the top of the bracket 20. The protrusion 212 matches the through hole on the protection plate 30 to achieve the positioning and installation of the protection plate 30. At the same time, the installation space 2111 formed by the limiting part 211 accommodates the protection plate 30. The setting of the protrusion 212 and the limiting part 211 achieves the horizontal positioning of the protection plate 30, which helps to improve the stability of the installation of the protection plate 30.

[0073] This application uses a PC sheet 40 to press and adhere the protective plate 30 along the height direction of the housing 10, thereby limiting the height of the protective plate 30 and stably setting the protective plate 30 on the bracket 20. The protrusion 212, the limiting part 211 and the PC sheet 40 cooperate to fix the protective plate 30, eliminating the need for screws or snap-fit ​​positioning of the protective plate 30, thus overcoming the problem of inconvenient installation of the protective plate 30 in the prior art.

[0074] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery module, characterized in that, include: Shell (10); A bracket (20) is disposed inside the housing (10). The bracket (20) is used to fix the battery cell. The top surface of the bracket (20) has a protruding post (212) and a circumferentially arranged limiting part (211). The limiting part (211) forms an installation space (2111). A protective plate (30) is disposed inside the mounting space (2111), the protective plate (30) having a through hole, and the protrusion (212) penetrating the through hole; A PC sheet (40) is provided at the top opening of the mounting space (2111) to cover the protective plate (30), and the PC sheet (40) at least partially abuts against the protective plate (30).

2. The battery module according to claim 1, characterized in that, The top surface of the bracket (20) also has a plurality of protrusions (213), and the peripheral edge of the protective plate (30) abuts against the protrusions (213).

3. The battery module according to claim 1, characterized in that, The inner wall surface of the limiting part (211) has a support part (214) arranged in the circumferential direction, the top surface of the support part (214) is formed as a support surface (2141), and the PC sheet (40) is disposed on the support surface (2141).

4. The battery module according to claim 1, characterized in that, The top surface of the housing (10) is flush with the top surface of the PC sheet (40), and the outer peripheral surface of the PC sheet (40) abuts against the inner wall surface of the housing (10).

5. The battery module according to claim 3, characterized in that, The support (214) has a protruding structure (2142) on the side facing the protective plate (30), and the protruding structure (2142) abuts against the outer peripheral wall of the protective plate (30).

6. The battery module according to claim 1, characterized in that, The top surface of the bracket (20) has a plurality of support blocks (216) arranged circumferentially along the bracket (20), and the top surface of the support blocks (216) supports the protective plate (30); and / or The PC sheet (40) has one or more gaskets on the side facing the protective plate (30), and the gaskets abut against the top surface of the protective plate (30).

7. The battery module according to any one of claims 1 to 6, characterized in that, The support (20) includes: The upper frame (210) has the limiting part (211) and the protruding post (212) on its top surface; The lower frame (220) and the upper frame (210) cooperate to form a mounting cavity for accommodating the battery cell. The upper frame (210) and the lower frame (220) are snap-fitted together or detachably connected by fasteners.

8. The battery module according to any one of claims 1 to 6, characterized in that, The housing (10) has a clearance opening (110) communicating with the mounting space (2111), and the battery module further includes: A wire (50), one end of which is connected to the protective plate (30); The other end of the wire (50) extends through the clearance opening (110) and out of the installation space (2111) to connect with the plug (60).

9. The battery module according to claim 8, characterized in that, The battery module also includes a pressure block (70), and the top surface of the bracket (20) has a support frame (215). The support frame (215) has a channel for the wire (50) to pass through, and the pressure block (70) is disposed on the support frame (215) to press the wire (50).

10. A battery pack, characterized in that, The battery module includes any one of claims 1 to 9.

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