Battery top cover structure

Abstract

The utility model provides a battery top cover structure which comprises a cover plate, an adapter piece clamping groove is arranged on the cover plate, two groups of symmetrical bosses are arranged close to the adapter piece clamping groove, each group of bosses comprises a tab lap joint part and an extension part, and the tab lap joint part and the extension part are arranged on the same straight line. According to the utility model, the problem that the current adapter sheet fuse fusing structure cannot realize complete disconnection of a circuit is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery preparation technical field, concretely relates to a battery top cover structure. BACKGROUND

[0002] Battery product is indispensable spare part as new energy equipment, such as electric vehicle, household energy storage, portable battery, digital battery etc. The overcurrent mode of square aluminum shell battery is usually from current collector to tab, tab to adapter piece, adapter piece to pole, pole is connected with external circuit again, thereby realizing overcurrent; Adapter piece plays the role of connecting in this process; When battery short circuit has large current, adapter piece and pole will produce a lot of heat, sealing ring is invalid under heat, leading to battery leakage, even can cause thermal runaway, thereby further increasing battery safety risk. In order to avoid battery continuous heating when short circuit occurs and further thermal runaway, the existing solution is usually to set fuse area in adapter piece, when short circuit occurs, fuse area is heated and fused, forms open circuit and cuts off current, thereby avoiding battery heating again; Because the place of fusing is plane, the place of fusing can be connected again, circuit is connected again, cannot realize the effect of complete disconnection after fuse. SUMMARY

[0003] The technical problem of the utility model is to provide a battery top cover structure, which solves the problem that the adapter piece fuse structure cannot completely disconnect the circuit.

[0004] The technical solution of the utility model is: the utility model provides a battery top cover structure, which comprises: a cover plate, an adapter piece clamping groove is arranged on the cover plate, two groups of protrusions are symmetrically arranged near the adapter piece clamping groove, each group of protrusions comprises a tab lapping portion and an extension portion, and the tab lapping portion and the extension portion are arranged on the same straight line.

[0005] Further, the tab lapping portion and the extension portion are fixedly connected, and the tab lapping portion and the extension portion have the same height.

[0006] Further, a first inclined surface is arranged on one side of the extension portion away from the adapter piece clamping groove, and the side surface of the extension portion close to the adapter piece clamping groove is perpendicular to the upper surface of the extension portion.

[0007] Further, the tab lapping portion comprises a connecting portion and a clamping portion, one end of the connecting portion is fixedly connected with the extension portion, and the other end is fixedly connected with the clamping portion.

[0008] Further, the connecting part is perpendicular to the clamping part, and a first chamfer is arranged at one end of the connecting part connected with the clamping part, and the first chamfer is arranged at a side away from the central axis of the adapter piece clamping groove.

[0009] Further, a second inclined surface is arranged at a side of the connecting part away from the adapter piece clamping groove, and the first inclined surface and the second inclined surface have the same inclination angle.

[0010] Further, the clamping part is perpendicular to the axial direction of the adapter piece clamping groove, and the clamping part is clamped with the adapter piece.

[0011] Further, the width of the upper surface of the connecting part is greater than the width of the upper surface of the extending part, and one end of the extending part away from the adapter piece clamping groove is flush with one end of the connecting part away from the adapter piece clamping groove.

[0012] Further, a second chamfer is arranged at one end of the connecting part close to the extending part, and the second chamfer is arranged at a side close to the central axis of the adapter piece clamping groove.

[0013] Further, the cover plate is provided with a fixing part at both ends, and the height of the boss is not greater than the height of the fixing part.

[0014] The battery top cover structure provided by the utility model has the advantages that two groups of bosses are symmetrically arranged on both sides of the adapter piece clamping groove on the cover plate, each group of bosses comprises a tab lap joint part and an extending part, the tab lap joint part is connected with the extending part and is on the same straight line, the tab is lapped on the tab lap joint part, the connection between the tab and the pole part of the adapter piece after the fuse structure is fused is prevented, the circuit is completely disconnected after the fuse, meanwhile, the adapter piece clamping groove clamps the adapter piece with the battery top cover, fixes the tab connecting part and the pole connecting part of the adapter piece, prevents the reconnection after the fuse, and the safety of the battery is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 A first structure schematic view of a battery top cover structure provided by the embodiment of the present application;

[0017] Figure 2 A top view of a battery top cover structure provided by the embodiment of the present application;

[0018] Figure 3This is a second structural schematic diagram of a battery top cover structure provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Boss, 2-Adapter slot, 3-Fixing component;

[0021] 11-Electrode overlap portion, 12-Extension portion, 111-Snap-fit ​​portion, 112-Connecting portion, 113-First chamfer, 121-First bevel, 1121-Second bevel, 1122-Second chamfer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In this invention, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0024] The implementation of this utility model will be described in detail below with reference to the accompanying drawings:

[0025] Figure 1 This is a first structural schematic diagram of a battery top cover structure provided in an embodiment of this application, as shown below. Figure 1 As shown, the battery top cover includes a cover plate and two sets of bosses 1, an adapter plate slot 2, and a fixing member 3 provided on the cover plate. The two sets of bosses 1 are symmetrically arranged on both sides of the adapter plate slot 2. The adapter plate is snapped onto the battery top cover by the two sets of bosses and the slot. The fixing member 3 is provided with screw holes, and the fixing member 3 fixes the top cover and the bottom cover.

[0026] Figure 2 This is a top view of a battery top cover structure provided in an embodiment of this application, combined with... Figure 1 and Figure 2The two groups of bosses each include a tab lap joint 11 and an extension 12, the tab lap joint 11 is fixedly connected with the extension 12, the extension 12 is fixedly connected with the fixing part 3, the tab lap joint 11 and the extension 12 are arranged on the same straight line, the extension 12 is perpendicular to the fixing part 3, the tab lap joint 11 and the extension 12 have the same height, and the height of the boss 1 is not more than the height of the fixing part 3. The tab lap joint 11 is arranged at the adapter piece safety structure, one part of the tab is connected with the tab connecting part of the adapter piece, and the other part is connected with the tab lap joint 11, so that the tab near the tab connecting part of the adapter piece is suspended.

[0027] The tab lap joint 11 includes a clamping part 111 and a connecting part 112, the connecting part 112 is perpendicular to the clamping part 111, the connecting part 112 is fixedly connected with the clamping part 111 and the extension 12 respectively, the clamping part 111 is arranged towards the direction of the central axis of the adapter piece clamping groove, and the clamping part 111 is clamped with the safety part of the adapter piece; after the safety structure is fused, the re-touching communication is prevented, and the safety of the battery is increased. The first chamfer 113 is arranged on one end of the connecting part 112 connected with the clamping part 111, and the first chamfer 113 is arranged on the side away from the central axis of the adapter piece clamping groove. The chamfer is matched with the tab part of the adapter piece.

[0028] The width of the upper surface of the connecting part 112 is greater than the width of the upper surface of the extension 12, and the end of the extension 12 away from the adapter piece clamping groove is flush with the end of the connecting part away from the adapter piece clamping groove. The smaller width of the extension increases the width of the tab part of the adapter piece clamping groove, so that the tab part can only move away from the tab part after being fused, and the probability of re-touching of the adapter piece is reduced.

[0029] The first inclined surface 121 is arranged on the side of the extension 12 away from the adapter piece clamping groove, the second inclined surface 1121 is arranged on the side of the connecting part 112 away from the adapter piece clamping groove, and the inclination angles of the first inclined surface 121 and the second inclined surface 1121 are the same. The tab is slowly lifted to the tab lap joint through the inclined surface, and the side of the extension 12 close to the adapter piece clamping groove is perpendicular to the adapter piece.

[0030] The second chamfer 1122 is arranged on the end of the connecting part 112 close to the extension 12, the second chamfer 1122 is arranged on the side close to the central axis of the adapter piece clamping groove, and the second chamfer 1122 transitions the part where the upper surfaces of the extension 12 and the connecting part 112 are inconsistent in width.

[0031] Figure 3 A second structural schematic diagram of a battery top cover structure provided by the embodiment of the application is provided. The structure is a structural schematic diagram of a tab connection state, as shown in Figure 3 The tab is supported by the two groups of bosses to suspend the side close to the adapter piece safety part and the tab connecting part, the other side of the tab is connected with the tab connecting part of the adapter piece, the tab is prevented from being connected with the tab part of the adapter piece, and the circuit cannot be completely disconnected.

[0032] The structure cover plate and the two groups of convex posts and the fixing members on the cover plate are made of plastic, which has good insulation and is easy to be molded.

[0033] Obviously, the above only preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments here, those skilled in the art can be made various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above embodiments, without departing from the present application, the concept can also include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

[0034] Note that in the description of the present specification, the description referring to the terms "some embodiments", "other embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A battery top cover structure, characterized in that, include: The cover plate has an adapter plate slot and two sets of symmetrical protrusions near the adapter plate slot. Each set of protrusions includes an electrode tab overlap and an extension. The electrode tab overlap and the extension are arranged on the same straight line. The electrode tab overlap is located at the adapter plate safety structure. One part of the electrode tab is connected to the electrode tab connection part of the adapter plate, and the other part is connected to the electrode tab overlap.

2. The battery top cover structure as described in claim 1, characterized in that, The electrode tab overlap portion is fixedly connected to the extension portion, and the electrode tab overlap portion and the extension portion have the same height.

3. The battery top cover structure as described in claim 2, characterized in that, The extension has a first inclined surface on the side away from the adapter slot, and the side of the extension near the adapter slot is perpendicular to the upper surface of the extension.

4. The battery top cover structure as described in claim 3, characterized in that, The tab connection includes a connecting part and a snap-fit ​​part. One end of the connecting part is fixedly connected to the extension part, and the other end is fixedly connected to the snap-fit ​​part.

5. The battery top cover structure as described in claim 4, characterized in that, The connecting part is perpendicular to the snap-fit ​​part, and the end of the connecting part connected to the snap-fit ​​part is provided with a first chamfer. The first chamfer is provided on the side away from the central axis of the adapter plate slot.

6. The battery top cover structure as described in claim 4, characterized in that, The connecting part has a second inclined surface on the side away from the adapter slot, and the first inclined surface and the second inclined surface have the same inclination angle.

7. The battery top cover structure as described in claim 5, characterized in that, The snap-fit ​​portion is perpendicular to the axial direction of the adapter plate slot, and the snap-fit ​​portion snaps into the adapter plate.

8. The battery top cover structure as described in claim 5, characterized in that, The width of the upper surface of the connecting part is greater than the width of the upper surface of the extension part, and the end of the extension part away from the adapter slot is flush with the end of the connecting part away from the adapter slot.

9. A battery top cover structure as described in claim 8, characterized in that, The connecting part is provided with a second chamfer at one end near the extension part, and the second chamfer is provided on the side near the central axis of the adapter slot.

10. A battery top cover structure as described in claim 1, characterized in that, The cover plate is provided with fixing members at both ends, and the height of the boss does not exceed the height of the fixing member.

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