Top cover and battery

Abstract

The utility model relates to a top cover and a battery and relates to the technical field of batteries, the top cover comprises a cover body, a first insulating part, a second insulating part and a telescopic part, the first insulating part is arranged on one side of the cover body, and the first insulating part is provided with a limiting bulge; the second insulating part comprises an extending part and a connecting part which are connected with each other; one end of the extending part away from the connecting part is rotationally matched with one end of the first insulating part; the telescopic piece is arranged on the connecting part and used for being matched with the limiting protrusion in the process of extending in the first direction or being separated from the limiting protrusion in the process of shortening in the first direction. The top cover and the battery can improve the problem that the second insulating part is easy to tear.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a top cover and a battery. Background Technology

[0002] During battery manufacturing, to prevent electrical connection between the cell and the top cover, an insulating component (usually made of plastic) is installed between them. One end of a first insulating component is rotatably connected to one end of a second insulating component, and the other end of the second insulating component is engaged with the middle of the first insulating component via a snap-fit. In related technologies, the snap-fit ​​structure is prone to being too tight. This can cause excessive force to be applied to the second insulating component during subsequent opening and closing, potentially leading to tearing. Utility Model Content

[0003] To address the aforementioned technical problems, embodiments of this application provide a top cover and a battery that improve the problem of the second insulating component being prone to tearing.

[0004] In a first aspect, a top cover is provided, comprising:

[0005] Cover;

[0006] A first insulating element is provided on one side of the cover body, and the first insulating element is provided with a limiting protrusion;

[0007] The second insulating member includes an extension and a connecting portion that are connected to each other, wherein one end of the extension away from the connecting portion is rotatably engaged with one end of the first insulating member.

[0008] A telescopic member is provided on the connecting portion. The telescopic member is used to engage with the limiting protrusion during the process of elongation along the first direction or to disengage from the limiting protrusion during the process of shortening along the first direction, so as to lock or unlock the first insulating member and the second insulating member.

[0009] According to a first aspect of this application, the connecting portion is provided with a through hole extending along the first direction, and the telescopic member passes through the through hole.

[0010] According to a first aspect of this application, the telescopic member includes:

[0011] A sleeve is inserted into the through hole;

[0012] An elastomer is inserted inside the sleeve;

[0013] An abutment is provided at the end of the elastic body, and the abutment is used to cooperate with the limiting protrusion.

[0014] According to a first aspect of this application, the abutments provided at opposite ends of the elastomer are respectively used to engage with the limiting protrusions provided on opposite sides of the first insulating member.

[0015] According to a first aspect of this application, the end of the abutment body is provided with an annular groove.

[0016] According to a first aspect of this application, the limiting protrusion is provided on the edge of the first insulating member.

[0017] According to a first aspect of this application, the limiting protrusion is provided with a positioning groove, and the telescopic member is used to engage with the positioning groove during the process of elongation along the first direction or to disengage from the positioning groove during the process of shortening along the first direction.

[0018] According to a first aspect of this application, the positioning groove is a non-through groove, and the end of the telescopic member is used to abut against the bottom wall of the positioning groove.

[0019] According to a first aspect of this application, the telescopic member is provided at both ends of the connecting portion that are opposite to each other along the second direction.

[0020] Secondly, a battery is also provided, comprising:

[0021] The shell has a receiving cavity with an opening;

[0022] A battery cell is disposed within the receiving cavity, and the battery cell is provided with tabs;

[0023] As described in the previous embodiment, the top cover is disposed on the top of the battery cell, the cover body is used to close the opening, and the first insulating member is disposed on the side of the cover body close to the battery cell;

[0024] The cover is provided with a pole post, which is connected to the electrode tab, and at least a portion of the electrode tab is located between the first insulating member and the second insulating member.

[0025] The top cover and battery provided in this application embodiment can lock or unlock the first and second insulating components through the cooperation structure of the telescopic component and the limiting protrusion. Firstly, compared to a solution where the first and second insulating components use a snap-fit ​​structure, this application embodiment does not require applying a large pulling force to the second insulating component during the extension or retraction of the telescopic component, thus preventing tearing. Secondly, compared to a solution where the first and second insulating components use a snap-fit ​​structure, the telescopic component in this application embodiment extends and retracts along a first direction, without occupying the top space of the battery cell. The folded state of the first and second insulating components occupies less space in the battery height direction, providing more design space for the tabs. Attached Figure Description

[0026] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0027] Figure 1 This is a schematic diagram of the structure of a battery provided for an exemplary embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the battery structure after the casing is removed, which is an exemplary embodiment of this application.

[0029] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0030] Figure 4 This is a schematic diagram of the top cover in a first state, provided as an exemplary embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the top cover in a second state, provided as an exemplary embodiment of this application.

[0032] Figure 6 An assembly structure diagram of the second insulating member and the telescopic member provided for an exemplary embodiment of this application.

[0033] Figure 7 This is a schematic diagram of the structure of a telescopic member provided for an exemplary embodiment of this application.

[0034] Figure 8 This is a schematic diagram of the structure of a first insulating member provided for an exemplary embodiment of this application.

[0035] Figure 9 This is a schematic diagram of the structure of the abutment provided in an exemplary embodiment of this application.

[0036] Figure 10 for Figure 8 Enlarged schematic diagram at point F in the middle.

[0037] Reference numerals: 100-cover; 110-first insulating element; 111-limiting protrusion; 112-positioning groove; 120-second insulating element; 121-extension; 122-connecting part; 1221-through hole; 130-telescopic element; 131-sleeve; 132-elastic body; 133-abutting body; 134-slot; 140-terminal post; 200-top cover; 300-battery; 310-casing; 320-cell; 321-tab. Detailed Implementation

[0038] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0039] Figure 1 This is a schematic diagram of the structure of a battery provided for an exemplary embodiment of this application. Figure 2 This is a schematic diagram of the battery structure after the casing is removed, which is an exemplary embodiment of this application. Figure 3 for Figure 2 An enlarged view of point A in the middle. (See diagram below.) Figures 1 to 3 As shown, the battery 300 provided in this application embodiment may include a housing 310, a battery cell 320, and a top cover 200. The housing 310 is provided with a receiving cavity with an opening. The battery cell 320 is disposed in the receiving cavity. The top cover 200 is disposed on the top of the battery cell 320. The top cover 200 can be used to close the opening and protects the battery cell 320 in the receiving cavity.

[0040] In one embodiment, the battery can be a rechargeable battery, which refers to a battery that can be recharged after discharge to activate the active materials and continue to be used. The battery can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and this application embodiment is not limited to this. As an example, a prismatic battery, including prismatic batteries, blade-shaped batteries, and multi-prismatic batteries, such as hexagonal prismatic batteries, is used; this application has no particular limitation.

[0041] The battery mentioned in the embodiments of this application refers to a single physical module that includes one or more batteries to provide higher voltage and capacity.

[0042] In some embodiments, the battery can be a battery module, and when there are multiple batteries, the multiple batteries are arranged and fixed to form a battery module.

[0043] In some embodiments, the battery may be a battery pack, which includes a housing and a battery, with the battery or battery module housed within the housing.

[0044] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0045] In some embodiments, the battery can be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0046] Figure 4 This is a schematic diagram of the top cover in a first state, provided as an exemplary embodiment of this application. Figure 5 This is a schematic diagram of the top cover in a second state, provided as an exemplary embodiment of this application. Figures 2 to 5 As shown, the top cover 200 provided in this application embodiment may include a cover body 100, which is disposed on the top of the aforementioned battery cell 320. The cover body 100 can be used to achieve the aforementioned function of closing the opening.

[0047] like Figures 3 to 5 As shown, the cover 100 is equipped with a pole post 140, and the aforementioned battery cell 320 is provided with a tab 321. The pole post 140 is connected to the tab 321, and the battery cell 320 can be connected to external electrical components through the tab 321 and the pole post 140.

[0048] In one embodiment, the pole post 140 can be directly connected to the tab 321.

[0049] In one embodiment, the pole post 140 and the tab 321 can be connected by an adapter.

[0050] Figure 6 This is an assembly structure diagram of the second insulating member and the telescopic member provided for an exemplary embodiment of this application. Figures 3 to 6 As shown, the top cover 200 may also include a first insulating member 110 and a second insulating member 120. The first insulating member 110 is disposed on the side of the cover 100 near the battery cell 320. The second insulating member 120 includes an extension 121 and a connecting portion 122 that are connected to each other. One end of the extension 121 away from the connecting portion 122 is rotatably engaged with one end of the first insulating member 110.

[0051] In practical applications, the tab 321 is snapped between the first insulating member 110 and the second insulating member 120 (reference). Figure 3 (as shown in the diagram), the second insulating member 120 rotates relative to the first insulating member 110 to the position shown in the diagram. Figure 5 In the state shown, the first insulating member 110 and the second insulating member 120 can limit the position of the tab 321, and the second insulating member 120 can also support the tab 321, thereby improving the assembly stability of the tab 321.

[0052] In one embodiment, the extension 121 and the connecting part 122 are integral structures. The extension 121 is pivotally connected to the first insulating member 110 via a connecting shaft, and the second insulating member 120 can rotate relative to the first insulating member 110 around the connecting shaft.

[0053] In one embodiment, the first insulating member 110 and the second insulating member 120 are made of plastic, which has good insulation performance, is lightweight, and is easy to process.

[0054] Figure 6This is an assembly structure diagram of the second insulating member and the telescopic member provided for an exemplary embodiment of this application. Figures 4 to 6 As shown, the top cover 200 may further include a telescopic member 130, which is disposed on the connecting portion 122, and the telescopic member 130 can move along the first direction ( Figure 6 (The direction indicated by the middle arrows C and D) indicates lengthening or shortening.

[0055] Correspondingly, such as Figures 4 to 6 As shown, the first insulating member 110 is provided with a limiting protrusion 111, which is correspondingly provided with the telescopic member 130. Figure 5 Taking the illustrated state as an example, during the extension of the telescopic member 130 along the first direction, the telescopic member 130 can cooperate with the limiting protrusion 111, thereby locking the first insulating member 110 and the second insulating member 120 (i.e., the first insulating member 110 and the second insulating member 120 can be kept in place). Figure 5 (As shown in the assembly state), in this state, the first insulating member 110 and the second insulating member 120 can fix the tab 321 in the middle area so that the tab 321 will not be displaced; it can be understood that during the process of the telescopic member 130 shortening along the first direction, the telescopic member 130 can disengage from the limiting protrusion 111, so that the first insulating member 110 and the second insulating member 120 can be unlocked, and the second insulating member 120 can rotate relative to the first insulating member 110. The first insulating member 110 and the second insulating member 120 are unfolded relative to each other. In this state, the tab 321 and the pole post 140 can be easily welded.

[0056] It should be understood that the top cover 200 and battery 300 provided in this application embodiment can lock or unlock the first insulating member 110 and the second insulating member 120 through the cooperation structure of the telescopic member 130 and the limiting protrusion 111. Firstly, compared to the solution where the first insulating member 110 and the second insulating member 120 adopt a snap-fit ​​structure, this application embodiment does not require applying a large pulling force to the second insulating member 120 during the extension or retraction of the telescopic member 130, thus preventing the second insulating member 120 from being torn. Secondly, compared to the solution where the first insulating member 110 and the second insulating member 120 adopt a snap-fit ​​structure, the telescopic member 130 in this application embodiment extends and retracts along the first direction, without occupying the top space of the battery cell 320. The folded state of the first insulating member 110 and the second insulating member 120 (as shown in the image)... Figure 5 The state shown occupies less space in the height direction of the battery 300, providing more design space for the tab 321.

[0057] like Figure 6As shown, the connecting part 122 is provided with a through hole 1221, which extends along the first direction, and the telescopic member 130 passes through the through hole 1221. It should be noted that the through hole 1221 passes through the two opposite sides of the connecting part 122 along the first direction, and the opposite ends of the telescopic member 130 along the first direction can extend out from the opposite ends of the through hole 1221 respectively.

[0058] It should be understood that, in practical applications, the end of the telescopic member 130 extending out of the through hole 1221 can be used to abut against the aforementioned limiting protrusion 111, thereby locking the first insulating member 110 and the second insulating member 120; after the end of the telescopic member 130 retracts into the through hole 1221, the telescopic member 130 separates from the limiting protrusion 111, the first insulating member 110 and the second insulating member 120 are unlocked, and the second insulating member 120 can rotate relative to the first insulating member 110.

[0059] It should be understood that the connection part 122 is provided with the aforementioned through hole 1221 extending along the first direction. On the one hand, the space of the connection part 122 in the thickness direction can be fully utilized. The telescopic member 130 is set in the through hole 1221 and will not occupy additional space in the height direction of the battery 300, thus providing more design space for the tab 321. On the other hand, the through hole 1221 extends along the first direction and can guide the telescopic member 130, so that the telescopic member 130 can accurately abut against the limiting protrusion 111 after it is extended.

[0060] In one embodiment, the connecting portion 122 is along the second direction (see reference). Figure 6 Telescopic members 130 are provided at both ends of the connecting portion 122 (in the directions indicated by arrows E and D). Correspondingly, the first insulating member 110 is provided with a limiting protrusion 111 at the position of the telescopic member 130 along the second direction. The telescopic members 130 at both ends of the connecting portion 122 abut against the corresponding limiting protrusions 111. In this way, the first insulating member 110 and the second insulating member 120 can be further improved in the folded state (refer to...). Figure 5 The assembly stability (as indicated) is to provide long-term support for the tab 321.

[0061] Figure 7 This is a schematic diagram of the structure of a telescopic member provided for an exemplary embodiment of this application. Figure 7 As shown, the telescopic component 130 may include a sleeve 131, which passes through the through hole 1221. In practical applications, the outer wall of the sleeve 131 mates with the inner wall of the through hole 1221, thus ensuring the assembly stability of the sleeve 131 within the through hole 1221.

[0062] like Figure 7As shown, the telescopic member 130 may also include an elastic body 132, which is inserted into the sleeve 131. The elastic body 132 can generate elastic deformation along the first direction. The sleeve 131 can limit the elastic body 132 during the deformation process, prevent the elastic body 132 from bending, and ensure that the elastic body 132 only generates elastic deformation along the first direction.

[0063] like Figure 7 As shown, the telescopic member 130 may further include an abutment body 133, which is disposed at the end of the elastic body 132. (This is in conjunction with...) Figure 5 The second insulating component 120 rotates to Figure 5 In the indicated state, the abutment 133 engages with the limiting protrusion 111, the first insulating member 110 and the second insulating member 120 are locked relative to each other, the elastic body 132 is in a compressed state, and the elastic body 132 can apply pressure to the abutment 133 under the action of the restoring force, so that the abutment 133 can abut more tightly against the limiting protrusion 111, preventing the second insulating member 120 from rotating relative to the first insulating member 110 without the action of external force, thereby improving the assembly stability between the first insulating member 110 and the second insulating member 120.

[0064] In one embodiment, the elastomer 132 may include a spring strip, a rubber strip, etc.

[0065] Figure 8 This is a schematic diagram of the structure of a first insulating member provided for an exemplary embodiment of this application. Figure 7 and Figure 8 As shown, the elastic body 132 has abutment bodies 133 at both opposite ends along the first direction. Correspondingly, the first insulating member 110 has limiting protrusions 111 on both opposite sides along the first direction. In practical applications, the abutment bodies 133 at both opposite ends of the elastic body 132 respectively cooperate with the limiting protrusions 111 on both opposite sides of the first insulating member 110. This can improve the stability between the telescopic member 130 and the limiting protrusions 111, preventing the telescopic member 130 from disengaging from the limiting protrusions 111 without external force, thereby preventing the second insulating member 120 from rotating relative to the first insulating member 110 without external force.

[0066] like Figure 8 As shown, the limiting protrusion 111 is provided on the edge of the first insulating member 110. In this way, the limiting protrusion 111 will not occupy the area between the first insulating member 110 and the second insulating member 120 used to hold the tab 321, providing a larger assembly space for the tab 321 and facilitating the processing and assembly of the tab 321.

[0067] In one embodiment, the edge of the first insulating member 110 is welded or integrally formed with a lug extending toward the second insulating member 120, the lug forming the aforementioned limiting protrusion 111.

[0068] Figure 9 This is a schematic diagram of the structure of an abutment provided in an exemplary embodiment of this application. For example... Figure 9 As shown, the end of the abutment body 133 is provided with an annular groove 134. During the production or assembly of the abutment body 133, the groove 134 can be used to cooperate with the fixture to facilitate clamping, thereby facilitating the positioning, transfer, and processing of the abutment body 133.

[0069] In one embodiment, there are multiple slots 134, which are distributed at intervals along the axial direction of the abutment body 133. Different slots 134 can be used to hold corresponding clamps at different or the same stages.

[0070] Figure 10 for Figure 8 An enlarged diagram of point F in the middle. (See diagram below.) Figure 10 As shown, the limiting protrusion 111 is provided with a positioning groove 112. In practical applications, during the extension of the telescopic member 130 along the first direction, the telescopic member 130 can be engaged with the positioning groove 112. The positioning groove 112 limits the end of the telescopic member 130 (e.g., the aforementioned abutment 133), preventing the end of the telescopic member 130 from sliding relative to the limiting protrusion 111, which can effectively improve the assembly stability between the first insulating member 110 and the second insulating member 120. Correspondingly, during the shortening of the telescopic member 130 along the first direction, the end of the telescopic member 130 (e.g., the aforementioned abutment 133) can disengage from the positioning groove 112, unlocking the first insulating member 110 and the second insulating member 120.

[0071] like Figure 10 As shown, the positioning groove 112 is a non-through groove, which allows the end of the telescopic member 130 to directly abut against the bottom wall of the positioning groove 112.

[0072] In one embodiment, the positioning groove 112 can also be a through groove, and the end of the telescopic member 130 can pass through the positioning groove 112. The positioning groove 112 can also limit the end of the telescopic member 130.

[0073] In one embodiment, the positioning groove 112 is a through groove, and the abutment 133 on the telescopic member 130 passes through the positioning groove 112. The locking groove 134 on the abutment 133 can be locked onto the inner wall of the positioning groove 112, thereby ensuring that the telescopic member 130 and the limiting protrusion 111 are relatively fixed.

[0074] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0075] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0076] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0077] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0078] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A cap, characterized in that, The utility model relates to a top cover, including: A cover (100); A first insulating piece (110) is located at one side of the cover (100), and the first insulating piece (110) is provided with a limiting protrusion (111); A second insulating piece (120) includes an extension (121) and a connecting part (122) connected with each other, one end of the extension (121) away from the connecting part (122) is rotationally matched with one end of the first insulating piece (110); A telescopic piece (130) is arranged on the connecting part (122), and the telescopic piece (130) is used for being matched with the limiting protrusion (111) in the process of being elongated along a first direction or being separated from the limiting protrusion (111) in the process of being shortened along the first direction, so as to lock or unlock the first insulating piece (110) and the second insulating piece (120).

2. The cap of claim 1, wherein The connecting part (122) is provided with a through hole (1221) extending along the first direction, and the telescopic piece (130) is arranged in the through hole (1221).

3. The cap of claim 2, wherein, The telescopic piece (130) includes: A sleeve (131) is arranged in the through hole (1221); An elastic body (132) is arranged in the sleeve (131); An abutting body (133) is arranged at the end of the elastic body (132), and the abutting body (133) is used for being matched with the limiting protrusion (111).

4. The cap of claim 3, wherein The abutting bodies (133) arranged at the opposite ends of the elastic body (132) are respectively matched with the limiting protrusions (111) arranged at the opposite sides of the first insulating piece (110).

5. The cap of claim 3, wherein The end of the abutting body (133) is provided with a ring-shaped clamping groove (134).

6. The cap of any one of claims 1 to 5, wherein, The limiting protrusion (111) is arranged at the edge of the first insulating piece (110).

7. The cap of any one of claims 1 to 5, wherein, The limiting protrusion (111) is provided with a positioning groove (112), and the telescopic piece (130) is used for being clamped in the positioning groove (112) in the process of being elongated along the first direction or being separated from the positioning groove (112) in the process of being shortened along the first direction.

8. The cap of claim 7, wherein The positioning groove (112) is a non-through groove, and the end of the telescopic piece (130) is used for abutting the bottom wall of the positioning groove (112).

9. The cap of any one of claims 1 to 5, wherein, The connecting part (122) is provided with the telescopic piece (130) at the opposite ends along a second direction.

10. A battery, characterized by The utility model relates to a top cover, including: A shell (310) is provided with a containing cavity, and the containing cavity is provided with an opening; An electric core (320) is arranged in the containing cavity, and the electric core (320) is provided with a tab (321); The cover (100) is used for closing the opening, the first insulating piece (110) is arranged at one side of the cover (100) close to the electric core (320); Wherein, the cover (100) is provided with a pole (140), the pole (140) is connected with the tab (321), and at least part of the tab (321) is located between the first insulating piece (110) and the second insulating piece (120).

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