Top cover assembly and battery

Abstract

The utility model provides a top cover assembly, which comprises a cover plate body provided with a pole; the insulating part is located on one side of the cover plate body, and the pole penetrates through the insulating part; the pin is positioned on one side, far away from the cover plate body, of the insulating part and is connected with the pole; and the barrier strip is positioned on one side, far away from the cover plate body, of the pin, and two ends of the barrier strip extend out relative to the pin to be connected with the insulating part so as to fix the relative positions of the insulating part and the pin. According to the top cover assembly, the pins and the pole columns are stably connected through the barrier strips, the practicability of the top cover assembly is enhanced, and the service life of the top cover assembly is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a top cap subassembly and battery. BACKGROUND

[0002] The connection of the pin and the pole in the battery is welding, with the use of the battery, there will be connection failure between the pin and the pole, which leads to the battery can not be used normally. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model discloses a top cap subassembly and battery to solve the problem of pin and pole connection failure.

[0004] In order to achieve the above purpose, the utility model provides a top cap subassembly, which comprises:

[0005] The cover plate body is provided with a pole;

[0006] The insulating piece is located on one side of the cover plate body, and the pole passes through the insulating piece and is arranged;

[0007] The pin is located on the side of the insulating piece away from the cover plate body and is connected with the pole;

[0008] The blocking strip is located on the side of the pin away from the cover plate body, and the two ends of the blocking strip are connected with the insulating piece relative to the pin to fix the relative position of the insulating piece and the pin.

[0009] Further, the insulating piece is provided with a pin groove facing the pin, the pin is located in the pin groove, and the two side walls of the pin groove are provided with connecting pieces.

[0010] Further, the pin comprises a fixing part and a connecting part connected in sequence, the fixing part is located in the pin groove, the connecting part is arranged by being bent relative to the fixing part, the blocking strip is located on the side of the fixing part away from the cover plate body, and the connecting pieces are located on the two side walls of the pin groove relative to the length direction of the fixing part.

[0011] Further, the two ends of the blocking strip are provided with connecting frames matched with the connecting pieces, and the connecting pieces are connected with the connecting frames away from the cover plate body through the connecting frames.

[0012] Further, the fixing part is provided with a groove, the groove is recessed relative to the side of the fixing part away from the cover plate body, the groove is used for accommodating the blocking strip, and the two ends of the groove are opened to allow the connecting frames at the two ends of the blocking strip to extend out and be connected with the connecting pieces.

[0013] Further, the two side walls of the pin groove oppositely arranged in the length direction of the fixed part are both provided with a connecting groove, and the two connecting grooves are respectively located at the two sides of the groove.

[0014] Further, the connecting piece comprises two buckles, the buckle comprises a supporting part and a clamping part, the groove bottom of the connecting groove is provided with the supporting part extending to the groove opening of the connecting groove, the supporting part is provided with the clamping part extending to the side of the connecting frame away from the cover plate body, the clamping part is in contact with the side of the connecting frame away from the cover plate body, and the extension directions of the clamping parts of the two buckles are arranged away from each other.

[0015] Further, the clamping part is flush with the side wall of the pin groove.

[0016] Further, the end faces of the two ends of the blocking strip are located in the connecting groove.

[0017] Based on the same inventive concept, the application also provides a battery comprising the top cover assembly and the battery cell as described above, and the tab of the battery cell is connected with the pin.

[0018] From the above, it can be seen that the top cover assembly provided by the application provides a constraint force for the pin relative to the insulating piece by arranging the blocking strip on the side of the pin away from the cover plate body and connecting the two ends of the blocking strip extending out of the pin with the insulating piece, so that the pin is stably arranged relative to the insulating piece. The pole is arranged through the insulating piece, and the pole is stably arranged relative to the insulating piece. The constraint force can constrain the pin to be stably arranged relative to the pole, avoid the pin moving relative to the insulating piece and pulling the pole, cause the connection between the pin and the pole to fail, and make the pin and the pole stably connected, which is beneficial to the improvement of the practicability of the top cover assembly and the extension of the service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0020] Figure 1 It is a three-dimensional explosion structure schematic view of the pin assembly of the embodiment of the application.

[0021] Figure 2 It is a three-dimensional enlarged structure schematic view of the pin assembly of the embodiment of the application.

[0022] Figure 3The side view enlarged structure schematic diagram of the connection between the blocking strip and the connecting piece in the pin assembly of the embodiment of the utility model;

[0023] Figure 4 The connection structure schematic diagram of the pin and the pole in the related art;

[0024] Figure 5 The connection structure schematic diagram of the pin and the pole in the related art;

[0025] Figure 6 The connection structure schematic diagram of the pin and the pole in the related art.

[0026] In the figure: 10, cover plate body; 11, pole; 20, insulating piece; 21, pin groove; 22, connecting piece; 221, buckle; 2211, supporting part; 2212, clamping part; 23, connecting groove; 30, pin; 31, fixed part; 311, groove; 32, connecting part; 40, blocking strip; 41, connecting frame; 50, battery cell; 51, tab; 60, gap. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will be further described in detail in combination with specific embodiments and with reference to the drawings.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the utility model should be understood as the usual meaning by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] As described in the background, the connection between the pin and the pole in the battery is welding, and with the use of the battery, there may be a connection failure between the pin and the pole, resulting in the battery cannot be used normally.

[0030] Based on this, the present application proposes a top cover assembly to solve the problem of connection failure between the pin and the pole.

[0031] In the following, the present application will be described in detail through one or more specific embodiments.

[0032] In some embodiments, referring to Figure 1 , Figure 2 and Figure 3 , a top cover assembly comprises:

[0033] a cover plate body 10, on which a pole 11 is arranged;

[0034] an insulating piece 20 arranged on one side of the cover plate body 10, and the pole 11 passes through the insulating piece 20;

[0035] a pin 30 arranged on the side of the insulating piece 20 away from the cover plate body 10, and connected with the pole 11;

[0036] a blocking strip 40 arranged on the side of the pin 30 away from the cover plate body 10, and the two ends of the blocking strip 40 extend out relative to the pin 30 and are connected with the insulating piece 20 to fix the relative positions of the insulating piece 20 and the pin 30.

[0037] Specifically, the insulating piece 20 is made of insulating material to insulate the pin 30 from the structures outside the pole 11, which is conducive to the safety of the corresponding battery and thus improves the practicability of the top cover assembly; the material of the blocking strip 40 is the same as that of the insulating piece 20, which can not only ensure the connection stability of the blocking strip 40 and the insulating piece 20, but also increase the friction between the blocking strip 40 and the insulating piece 20, so as to facilitate the blocking strip 40 to exert a restraining force on the pin 30, so that the relative positions of the insulating piece 20 and the pin 30 are fixed.

[0038] According to the fixing principle, the position of the pole 11 is fixed relative to the insulating piece 20, in order to fix the relative positions of the pin 30 and the pole 11 and enhance the connection stability, the pin 30 is fixed relative to the insulating piece 20, which can greatly enhance the restraining force of the pin 30 relative to the pole 11.

[0039] In this embodiment, the blocking strip 40 is arranged on the side of the pin 30 away from the cover plate body 10, and the two ends of the blocking strip 40 extend out relative to the pin 30 and are connected with the insulating piece 20, so that the pin 30 is fixed relative to the insulating piece 20 under the joint action of the blocking strip 40 and the insulating piece 20, i.e. fixed relative to the pole 11, which can avoid the movement of the pin 30 relative to the pole 11 and cause the disconnection of the pole 11 and the pin 30.

[0040] In the embodiment, the pin 30 is provided with the restraint force stably arranged relative to the insulating piece 20 by arranging the baffle 40 on the side of the pin 30 away from the cover plate body 10 and connecting the two ends of the baffle 40 to the insulating piece 20, and the pole 11 is arranged through the insulating piece 20 and stably arranged relative to the insulating piece 20, so that the restraint force can constrain the pin 30 to be stably arranged relative to the pole 11, avoid the pin 30 from moving relative to the insulating piece 20 to pull the pole 11, cause the pin 30 to fail to be connected to the pole 11, and make the pin 30 stably connected to the pole 11, which is beneficial to improving the practicability of the top cover assembly and prolonging the service life.

[0041] In addition, during the assembly of the top cover assembly, the arrangement of the baffle 40 can make the pin 30 fixedly arranged relative to the insulating piece 20, and can play a fixing role on the pin 30 when the pin 30 and the pole 11 are welded, which is beneficial to improving the welding efficiency of the pin 30 and the pole 11, and further improving the assembly efficiency of the top cover assembly.

[0042] In some embodiments, the insulating piece 20 is provided with a pin groove 21 arranged towards the pin 30, the pin 30 is located in the pin groove 21, the two side walls of the pin groove 21 are respectively provided with a connecting piece 22, and the two ends of the baffle 40 are respectively connected to the two connecting pieces 22.

[0043] Specifically, the side of the insulating piece 20 away from the cover plate body 10 is provided with a pin groove 21, the pole 11 is arranged through the pin groove 21, the pin 30 is connected to the pole 11 and located in the pin groove 21, and the two ends of the baffle 40 are connected to the side walls of the pin groove 21 relative to the pin 30 to realize the connection with the insulating piece 20.

[0044] The two side walls of the pin groove 21 are respectively provided with the connecting piece 22, the connecting piece 22 is matched with the two ends of the baffle 40 to connect the baffle 40, and the baffle 40 and the side walls of the pin groove 21 are connected through the connecting piece 22.

[0045] The baffle 40 is a strip structure, the two ends of the baffle 40 extend relative to the pin 30, the connecting piece 22 is arranged on the two opposite side walls of the pin groove 21, the baffle 40 is connected to the connecting piece 22, the fixing effect of the baffle 40 on the pin 30 is enhanced, the stability of the pin 30 fixedly arranged relative to the pole 11 is improved, and the practicability of the top cover assembly is improved.

[0046] In the embodiment, the insulating piece 20 is provided with the pin groove 21 away from one side of the cover plate body 10, the pin 30 is located in the pin groove 21, and the connecting piece 22 is arranged on the opposite two side walls of the pin groove 21, so that the two ends of the blocking strip 40 are connected with the two connecting pieces 22 respectively, so as to exert the fixed force of the blocking strip 40 on the pin 30 relative to the pin groove 21 and the insulating piece 20. The arrangement of the connecting piece 22 not only facilitates the connection of the blocking strip 40 and the insulating piece 20, but also helps to enhance the force exerted by the blocking strip 40 on the pin 30, thereby improving the practicability of the top cover assembly.

[0047] Referring to Figure 4 、 Figure 5 and Figure 6 , the tab 51 of the battery cell 50 shown in the figure is welded on the side surface. During cell assembly, the pin 30 is in L-shaped structure to connect the tab 51 and the top surface pole 11. However, when designing the tab 51 welding tool to weld the tab 51 and the pin 30, a gap 60 of 1-2 mm needs to be left between the pin 30 and the side surface of the battery cell 50 to arrange the welding tool. After welding is completed, the welding tool is removed, and the gap 60 between the pin 30 and the battery cell 50 remains. Based on this, during the subsequent use of the battery, the position of the battery cell 50 is not fixed and is prone to left and right movement, thereby driving the tab 51 to move left and right. Under the pulling force of the tab 51, the pin 30 also moves, and the pin 30 moves relative to the pole 11. As the movement of the pin 30 relative to the pole 11 is enhanced, the welding effect of the pin 30 and the pole 11 is insufficient, the pin 30 and the pole 11 are disconnected, the connection between the pin 30 and the pole 11 is invalid, and the battery is invalid and cannot be used continuously.

[0048] In addition, during cell assembly, the pin 30 is first welded with the pole 11 and then welded with the tab 51. Due to the center of gravity of the L-shaped structure, the pin 30 is prone to eversion and is not convenient for welding when the pin 30 is welded with the pole 11.

[0049] Based on this, the application also provides a top cover assembly to solve the problems of invalid connection between the pin 30 and the pole 11 and inconvenience in welding the pin 30 and the pole 11 when the pin 30 is in L-shaped structure.

[0050] In some embodiments, continuing to refer to Figure 1 、 Figure 2 and Figure 3The pin 30 comprises a fixing portion 31 and a connecting portion 32 connected in sequence, the fixing portion 31 is located in the pin groove 21, the connecting portion 32 is arranged in a bent manner relative to the fixing portion 31, the stop bar 40 is located on the side of the fixing portion 31 away from the cover plate body 10, and the connecting piece 22 is located on the two side walls of the pin groove 21 arranged opposite in the length direction of the fixing portion 31.

[0051] Specifically, the pin groove 21 is used to accommodate the fixing portion 31 of the pin 30, the connecting portion 32 is bent relative to the fixing portion 31 and away from the pin groove 21, and is arranged close to the end of the cover plate body 10 to be connected with the tab 51 located on the side of the battery cell 50.

[0052] The stop bar 40 is located on the side of the fixing portion 31 away from the cover plate body 10 to apply a force to the fixing portion 31, so that the relative position of the fixing portion 31 of the pin 30 and the pole column 11 is fixed. The stop bar 40 extends relative to the fixing portion 31 to be connected with the connecting piece 22, because the connecting portion 32 is arranged in a bent manner relative to the fixing portion 31, so the stop bar 40 cannot extend relative to the fixing portion 31 to be connected with the connecting piece 22 in the length direction of the fixing portion 31, the stop bar 40 can extend in the width direction of the fixing portion 31, and then can be connected with the side wall of the pin groove 21, at this time, the stop bar 40 is connected with the side wall of the pin groove 21 arranged opposite in the length direction of the fixing portion 31, so the connecting piece 22 is arranged on the two side walls of the pin groove 21 arranged opposite in the length direction of the fixing portion 31 to be connected with the stop bar 40.

[0053] It should be noted that the length direction of the fixing portion 31 is the extension direction of the fixing portion 31.

[0054] In the embodiment, the fixing portion 31 is connected with the pole column 11 in the pin groove 21, the stop bar 40 is located on the side of the fixing portion 31 away from the cover plate body 10, and the two ends thereof extend relative to the fixing portion 31 to be connected with the side wall of the pin groove 21, so that the position of the fixing portion 31 and the pin groove 21 is fixed relatively, and then the position of the fixing portion 31 and the pole column 11 is fixed relatively, avoiding the connection failure of the fixing portion 31 and the pole column 11, and then avoiding the connection failure of the pin 30 and the pole column 11, and improving the practicability of the top cover assembly.

[0055] In some embodiments, the two ends of the stop bar 40 are provided with a connecting frame 41 matched with the connecting piece 22, and the connecting piece 22 is connected with the connecting frame 41 away from the cover plate body 10.

[0056] Specifically, the two ends of the blocking strip 40 are connected with the connecting piece 22 through the connecting frame 41, the connecting frame 41 is connected with the connecting piece 22 after the connecting piece 22 passes through the connecting frame 41, which can not only realize the connection between the blocking strip 40 and the connecting piece 22, but also enhance the connection stability between the blocking strip 40 and the connecting piece 22, so as to facilitate the blocking strip 40 to continuously and stably exert the restraining force on the fixed part 31 of the pin 30, and further facilitate the relative position between the pin 30 and the pole 11 to be stably fixed, and further facilitate the practicability of the top cover assembly to be enhanced.

[0057] It should be noted that the blocking strip 40 and the connecting frame 41 are an integral structure, the material of the blocking strip 40 is the same as that of the insulating piece 20, that is, the material of the connecting frame 41 is the same as that of the insulating piece 20, which can ensure the connection stability between the connecting frame 41 and the connecting piece 22 located on the side wall of the pin groove 21 of the insulating piece 20, and further facilitate the blocking strip 40 to exert the restraining force on the pin 30.

[0058] In some embodiments, the fixed part 31 is provided with a groove 311, the groove 311 is recessed on the side of the fixed part 31 away from the cover body 10, the groove 311 is used to accommodate the blocking strip 40, and the two ends of the groove 311 are open to allow the connecting frame 41 located at the two ends of the blocking strip 40 to extend out and be connected with the connecting piece 22.

[0059] Specifically, the blocking strip 40 is located in the groove 311, is located on the fixed part 31 of the pin 30, and can extend out relative to the fixed part 31 and be connected with the connecting piece 22 on the side wall of the pin groove 21, the blocking strip 40 located in the groove 311 enables the groove 311 to exert a limiting action on the blocking strip 40 in the width direction of the blocking strip 40 (i.e., the length direction of the fixed part 31), which is conducive to the stable arrangement of the blocking strip 40 on the fixed part 31, and further facilitates the blocking strip 40 to exert the restraining force on the fixed part 31 (i.e., the pin 30), and further facilitates the relative position between the pin 30 and the pole 11 to be fixed and stably connected.

[0060] In some embodiments, the side of the blocking strip 40 away from the cover body 10 is flush with the side of the side wall of the pin groove 21 away from the cover body 10.

[0061] Specifically, the fixing portion 31 is located in the pin groove 21, and the side wall of the pin groove 21 is arranged protruding relative to the fixing portion 31 away from the cover body 10; when the blocking strip 40 is connected with the connecting piece 22 in the recess 311, the side of the blocking strip 40 away from the cover body 10 is flush with the side of the pin groove 21 away from the cover body 10, so as to be arranged protruding relative to the fixing portion 31, avoiding the fixing portion 3141 of the pin 3040 from contacting other structures, and facilitating the relative position of the pin 30 and the pole 11 to be fixed, and facilitating the safe arrangement of the pin 30.

[0062] In addition, the blocking strip 40 can also be arranged protruding relative to the side wall of the pin groove 21, which affects the normal arrangement of the pin groove 21 on the top cover assembly, and thus facilitates the improvement of the practicability of the top cover assembly.

[0063] In some embodiments, the pin groove 21 is provided with a connecting groove 23 on both sides of the length direction of the fixing portion 31, and the connecting groove 23 is located on both sides of the recess 311.

[0064] Specifically, the fixing portion 31 of the pin 30 is located in the pin groove 21, the side wall of the pin groove 21 is arranged protruding relative to the fixing portion 31, the connecting piece 22 is located on the side wall of the pin groove 21, the blocking strip 40 is connected with the pin groove 21 (i.e. the insulating piece 20) through the connecting piece 22, and the blocking strip 40 applies a force perpendicular to the fixing portion 31 to the fixing portion 31 of the pin 30, so as to increase the friction of the fixing portion 31 relative to the pin groove 2121. Therefore, the connection fastening degree of the blocking strip 40 and the connecting piece 22 is related to the constraint force of the blocking strip 40 on the fixing portion 31, the connecting piece 22 is arranged in the connecting groove 23212, so that the height of the connecting piece 22 is not higher than the side wall of the pin groove 21, so that the connection distance of the blocking strip 40 and the connecting piece 22 is reduced, which facilitates the increase of the connection fastening degree of the blocking strip 40 and the connecting piece 22, and thus facilitates the increase of the constraint force of the blocking strip 40 on the fixing portion 31, so that the relative position of the pin 30 and the pole 11 is fixed, and the connection stability of the pin 30 and the pole 11 is facilitated.

[0065] It needs to be explained that the connecting groove 23 is matched with the connecting frame 41, the connecting groove 23 is used to accommodate the connecting frame 41, the connecting piece 22 is located in the connecting groove 23, but the two sides have a spacing between the connecting piece 22 and the side wall of the pin groove 21, so as to accommodate the frame body of the connecting frame 41, and the connecting piece 22 is matched with the opening of the connecting frame 41.

[0066] In some embodiments, the connecting piece 22 includes two buckles 221, the buckle 221 includes a supporting part 2211 and a clamping part 2212, the bottom of the connecting groove 23 is provided with the supporting part 2211 extending to the opening of the connecting groove 23, the supporting part 2211 is provided with the clamping part 2212 extending to the side of the connecting frame 41 away from the cover plate body 10, the clamping part 2212 is in contact with the side of the connecting frame 41 away from the cover plate body 10, and the extension directions of the clamping parts 2212 of the two buckles 221 are arranged away from each other.

[0067] Specifically, one end of the supporting part 2211 is located at the bottom of the connecting groove 23, the other end is connected with the clamping part 2212, the clamping part 2212 is used to clamp with the frame body of the connecting frame 41, the supporting part 2211 is used to pass through the connecting frame 41, so that the clamping part 2212 is clamped with the connecting frame 41, and the blocking strip 40 and the side wall of the pin groove 21 are connected through the buckle 221, which can not only ensure the connection stability of the blocking strip 40 and the pin groove 21, but also simplify the connection of the blocking strip 40 and the pin groove 21, and is helpful to improve the practicability of the top cover assembly.

[0068] A connecting piece 22 is arranged in the connecting groove 23, the connecting piece 22 includes two buckles 221, a connecting frame 41 is clamped with the two buckles 221, and the two buckles 221 are clamped with the side of the connecting frame 41 away from the cover plate body 10. In order to avoid that the two buckles 221 affect the structural arrangement of the top cover assembly, the extension directions of the clamping parts 2212 of the two buckles 221 are arranged away from each other, that is, respectively extending towards the side wall of the pin groove 21 close to it, which can not only ensure the clamping stability of the buckle 221 and the connecting frame 41, but also avoid that the clamping part 2212 protrudes relative to the side wall of the pin groove 21, which affects the structural arrangement of the top cover assembly, and is helpful to improve the practicability of the top cover assembly.

[0069] In some embodiments, the clamping part 2212 is arranged flush with the side wall of the pin groove 21.

[0070] Specifically, one side of the blocking strip 40 away from the cover plate body 10 is flush with one side of the pin groove 21 away from the cover plate body 10, and the connecting frame 41 is recessed relative to one side of the blocking strip 40 away from the cover plate body 10, so that when the connecting frame 41 is connected with the clamping part 2212, the clamping part 2212 is arranged flush with the side wall of the pin groove 21, and the clamping part 2212 is not arranged protruding relative to the side wall of the pin groove 21, which can not only ensure the clamping effect of the clamping part 2212 and the connecting frame 41, but also does not affect the structural relationship of the top cover assembly, and is beneficial to improving the practicability of the top cover assembly.

[0071] In some embodiments, the end faces of the blocking strip 40 at both ends are located in the connecting groove 23.

[0072] Specifically, the blocking strip 40 is connected with the connecting piece 22 located in the connecting groove 23, and the end faces of the blocking strip 40 are located in the connecting groove 23 to avoid extending out of the connecting groove 23 and affecting the normal use of the top cover assembly. Arranging the end faces of the blocking strip 40 at both ends in the connecting groove 23 is beneficial to ensuring the normal use of the top cover assembly and improving the practicability of the top cover assembly.

[0073] Based on the same inventive concept, the application also provides a battery including a cell 50 and a top cover assembly as described above, and a tab 51 of the cell 50 is connected with the pin 30.

[0074] Specifically, when the pin 30 includes the fixed part 31 and the connecting part 32, the tab 51 of the cell 50 is connected with the connecting part 32, so that the pin 30 connects the tab 51 of the cell 50 with the pole 11, so that the battery can be charged and discharged, and the pin 30 is fixed relative to the insulating piece 20 under the action of the blocking strip 40, and then is fixed relative to the pole 11, which can avoid the situation that the pin 30 moves relative to the pole 11 due to the movement of the cell 50, and then can avoid the disconnection of the pin 30 and the pole 11.

[0075] The battery provided in the embodiment has the same beneficial effects as the top cover assembly described in the above embodiments, and details are not repeated here.

[0076] Those skilled in the art will understand that the above discussion of any of the embodiments is merely exemplary in nature and is not intended to imply that the scope of the application, including the claims, is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the application as described above, which are not provided in details for the sake of brevity.

[0077] Embodiments of the present application are intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternations, modifications, permutations, combinations, sub-combinations, sub-combinations and variations are intended to fall within the scope of the present application as claimed.

Claims

1. A cap assembly, characterized by, The application relates to a top cover assembly of a battery cell. The top cover assembly comprises a cover plate body, a polar post arranged on the cover plate body, an insulating piece arranged on one side of the cover plate body and through which the polar post passes, a pin arranged on the side of the insulating piece away from the cover plate body and connected with the polar post, and a blocking strip arranged on the side of the pin away from the cover plate body and connected with the insulating piece at both ends thereof to fix the relative positions of the insulating piece and the pin. The insulating piece is provided with a pin groove arranged towards the pin, the pin is arranged in the pin groove, and both side walls of the pin groove are provided with connecting pieces. The pin comprises a fixing part and a connecting part connected in sequence, the fixing part is arranged in the pin groove, the connecting part is arranged in a bent mode relative to the fixing part, the blocking strip is arranged on the side of the fixing part away from the cover plate body, and the connecting pieces are arranged on the side walls of the pin groove arranged opposite to each other in the length direction of the fixing part. Both ends of the blocking strip are provided with connecting frames matched with the connecting pieces, and the connecting pieces are connected with the connecting frames away from the cover plate body.

2. The roof assembly of claim 1, wherein, The fixing part is provided with a groove, the groove is arranged in a recessed mode relative to the side of the fixing part away from the cover plate body, the groove is used for accommodating the blocking strip, and both ends of the groove are open to allow the connecting frames at both ends of the blocking strip to extend out and be connected with the connecting pieces.

3. The roof assembly of claim 2, wherein, Both side walls of the pin groove arranged opposite to each other in the length direction of the fixing part are provided with connecting grooves, and the connecting pieces are arranged in the connecting grooves.

4. The roof assembly of claim 3, wherein, The connecting piece comprises two buckles, the buckle comprises a supporting part and a clamping part, the supporting part is arranged on the groove bottom of the connecting groove and extends towards the groove opening of the connecting groove, the supporting part extends through the connecting frame and is provided with the clamping part on the side of the connecting frame away from the cover plate body, the clamping part is in contact with the side of the connecting frame away from the cover plate body, and the extending directions of the clamping parts of the two buckles are arranged away from each other.

5. The roof assembly of claim 4, wherein, The clamping part is arranged in a flush mode with the side wall of the pin groove.

6. The roof assembly of claim 5, wherein, The end faces of both ends of the blocking strip are arranged in the connecting grooves.

7. The roof assembly of claim 6, wherein, The application further discloses a battery cell comprising the top cover assembly and the pin connected with the tab of the battery cell.

8. The roof assembly of claim 7, wherein, ​ 9. The roof assembly of claim 6, wherein, ​ 10. A battery, characterized by ​

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