Battery cover plate and battery

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery cover plate and a battery. The battery cover plate comprises a top cover piece, a leading-out piece and a filling piece, the top cover piece is provided with a through installation groove, the leading-out piece penetrates through the installation groove, the part, located on the side, facing a battery cell, of the leading-out piece can be bent to form a bent part, and the bent part is used for being electrically connected with a pole piece output pole of the battery cell; the filling piece is at least partially filled in the mounting groove and surrounds the leading-out piece, so that the leading-out piece and the top cover piece are arranged in an insulated mode. The battery cover plate is relatively simple in structure, few in parts, convenient to assemble and beneficial to improving the assembling efficiency of the battery cover plate, so that the manufacturing efficiency of the battery is improved. And due to the existence of the bending part, the distance between the whole battery cover plate and the end part of the battery cell is favorably reduced, so that the energy density of the battery is favorably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cover and a battery. Background Art

[0002] The cover plate assembly of the existing square shell battery includes a top cover sheet, an upper electrode plate, a lower electrode column, an upper insulating member, a lower insulating member and a sealing member. The top cover sheet is provided with an electrode column through hole. The lower electrode column includes an electrode column part and an electrode plate part. The electrode column part passes through the electrode column through hole and is connected to the upper electrode plate. The upper insulating member is clamped between the upper electrode plate and the top cover sheet to ensure insulation between the upper electrode plate and the top cover sheet. The electrode plate part is welded to the stacked output pole of the battery cell. The lower insulating member is clamped between the electrode plate part and the top cover sheet to ensure insulation between the two. The sealing member is sleeved on the electrode column part to seal the electrode column part and the top cover sheet. The structure of this cover plate assembly is very complex, with many parts, many assembly processes, and a long assembly time, which reduces the assembly efficiency of the battery cover plate, thereby reducing the manufacturing efficiency of the battery. Utility Model Content

[0003] The first object of the utility model is to provide a battery cover plate, which has a relatively simple structure, a small number of parts, and is easy to assemble, which is beneficial to improving the assembly efficiency of the battery cover plate, thereby improving the manufacturing efficiency of the battery.

[0004] The second object of the utility model is to provide a battery with a simple structure, a small number of parts and components, and high manufacturing efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a battery cover plate, comprising: a top cover sheet, the top cover sheet having a mounting groove which is arranged through the top cover sheet; a lead-out piece, the lead-out piece is arranged through the mounting groove, the part of the lead-out piece which is located on the side of the top cover sheet which faces the battery cell can be bent to form a bent portion, and the bent portion is used for conductive connection with the pole piece output pole of the battery cell; a filling piece, at least a part of the filling piece is filled in the mounting groove and is arranged around the lead-out piece, so that the lead-out piece and the top cover sheet are insulated.

[0007] In some embodiments, the filling piece includes a filling portion and a stop portion connected to the filling portion, the filling portion fills the gap between the mounting groove and the lead-out piece, and the stop portion stops at the surface of the top cover sheet facing the bending portion and / or the surface of the top cover sheet away from the bending portion.

[0008] In some embodiments, part of the bent portion overlaps with the filling piece, and another part of the bent portion extends out of the filling piece; the battery cover plate also includes an insulating member, and the insulating member is located between the bent portion and the top cover sheet.

[0009] In some embodiments, the battery cover plate further includes a fixing card, which is installed in the installation slot and is used to clamp the lead-out piece, and at least a portion of the fixing card is enclosed in the filling piece and is insulated from the top cover sheet.

[0010] In some specific embodiments, one of the lead-out piece and the fixing card is provided with a positioning notch, and the other is provided with a positioning protrusion matched with the positioning notch.

[0011] In some more specific embodiments, the positioning notch is arranged on the lead-out piece, the positioning protrusion is arranged on the fixing card, and the fixing card is also provided with stop protrusions located on both sides of the positioning protrusion, and the two stop protrusions respectively stop on two opposite sides of the lead-out piece.

[0012] In some specific embodiments, the fixing card includes a connected fixing portion and a clamping portion, the fixing portion abuts against a surface of the top cover sheet away from the bending portion, and the clamping portion is installed in the installation slot.

[0013] In some embodiments, the top cover sheet has an open accommodating cavity, the open end of the accommodating cavity is arranged toward the battery cell, the mounting groove passes through the top wall of the accommodating cavity away from the battery cell, and the bending portion is located in the accommodating cavity.

[0014] The utility model also discloses a battery, comprising the battery cover, battery cell and shell as described above, wherein the battery cell is installed inside the shell, the shell has an open end, and the battery cover is buckled on the open end of the shell; the top cover of the battery cover is connected to the shell, and the end of the lead-out piece of the battery cover extending into the shell can be bent to form a bent portion, and the bent portion is conductively connected to the pole piece output pole of the battery cell (200).

[0015] In some embodiments, one end of the shell is open, and the two pole piece output poles of the battery cell are located at one end of the battery cell and are arranged toward the open end of the shell; or:

[0016] The two ends of the shell are open, and the two pole piece output poles of the battery core are located at the two ends of the battery core and are respectively arranged toward the two open ends of the shell.

[0017] The beneficial effects of the battery cover of the utility model are as follows: in the actual assembly process, the lead-out piece is passed through the installation slot, and the lead-out piece is bent toward one end of the battery cell, and then the material is filled in the installation slot to form a filling piece, and the lead-out piece is fixed to the top cover sheet while ensuring that the lead-out piece and the top cover sheet are insulated, and finally the bent portion is connected to the output pole of the pole piece of the battery cell. Since the battery cover of the present application includes a top cover sheet, a lead-out piece and a filling piece, the structure of the battery cover is relatively simple, the number of parts is small, and the assembly is convenient, which is conducive to improving the assembly efficiency of the battery cover, thereby improving the manufacturing efficiency of the battery, and due to the existence of the bent portion, it is conducive to reducing the distance between the entire battery cover and the end of the battery cell, thereby helping to improve the energy density of the battery.

[0018] The beneficial effects of the battery of the present utility model are as follows: since it has the battery cover mentioned above, in the actual assembly process, the lead-out piece is passed through the installation groove and bent toward one end of the battery cell, and then the material is filled in the installation groove to form a filling piece, and the lead-out piece is fixed to the top cover sheet while ensuring that the lead-out piece and the top cover sheet are insulated, and then the bent portion is connected to the pole piece output pole of the battery cell, and finally the connected top cover sheet and the battery cell are installed into the shell. Since the battery of this embodiment only includes the battery cover, battery cell and shell mentioned above, it has a simple structure and is easy to assemble, which is beneficial to improving the assembly efficiency of the battery, and can reduce the distance between the entire battery cover and the end of the battery cell, which is beneficial to improving the energy density of the battery.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a battery cover plate of an embodiment of the utility model;

[0021] Figure 2 is a cross-sectional view of a battery cover plate of an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the battery cover of an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a fixing card according to an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the first battery of the utility model;

[0025] Figure 6 yes Figure 5 A schematic diagram of the exploded structure of the battery shown;

[0026] Figure 7 It is a structural schematic diagram of the second battery of the utility model;

[0027] Figure 8 yes Figure 7 A schematic diagram of the exploded structure of the battery shown;

[0028] Reference numerals:

[0029] 100. Battery cover;

[0030] 110. Top cover sheet; 111. Mounting groove; 112. Accommodating cavity;

[0031] 120. lead-out piece; 121. bending portion; 122. positioning notch;

[0032] 130. Filling piece; 131. Filling portion; 132. Stop portion;

[0033] 140. Insulation parts;

[0034] 150, fixing card; 151, fixing part; 152, clamping part; 1521, positioning protrusion; 1522, stop protrusion;

[0035] 200, battery cell; 210, pole piece output pole;

[0036] 300. Shell; 400. Explosion-proof structure; 500. Liquid injection structure. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] The battery cover 100 and the battery of the present invention are described in detail below with reference to the accompanying drawings.

[0042] like Figure 1As shown, the battery cover 100 of this embodiment includes a top cover sheet 110, a lead-out piece 120 and a filling piece 130. The top cover sheet 110 has a mounting groove 111 that is arranged therethrough. The lead-out piece 120 is arranged in the mounting groove 111. The portion of the lead-out piece 120 located on the side of the top cover sheet 110 facing the battery cell 200 can be bent to form a bending portion 121. The bending portion 121 is used to be conductively connected to the pole piece output pole 210 of the battery cell 200. At least a portion of the filling piece 130 is filled in the mounting groove 111 and is arranged around the lead-out piece 120, so that the lead-out piece 120 and the top cover sheet 110 are insulated. It is understandable that, in the actual assembly process, the lead-out piece 120 is passed through the mounting groove 111, and the lead-out piece 120 is bent toward one end of the battery cell 200, and then the insulating material is filled in the mounting groove 111 to form a filler 130, and the lead-out piece 120 is fixed to the top cover sheet 110 while ensuring that the lead-out piece 120 and the top cover sheet 110 are insulated, and finally the bent portion 121 is connected to the pole piece output pole 210 of the battery cell 200. Since the battery cover plate 100 of the present application includes the top cover sheet 110, the lead-out piece 120 and the filler 130, the structure of the battery cover plate 100 is relatively simple, the number of parts is small, and the assembly is convenient, which is conducive to improving the assembly efficiency of the battery cover plate 100, thereby improving the manufacturing efficiency of the battery. Moreover, due to the existence of the bending portion 121, on the one hand, it is beneficial to reduce the distance between the entire battery cover 100 and the end of the battery cell 200, thereby helping to improve the energy density of the battery. On the other hand, it can increase the contact area between the lead-out piece 120 and the pole piece output pole 210 of the battery cell 200, thereby improving the connection stability between the lead-out piece 120 and the pole piece output pole 210.

[0043] It should be noted that the connection method between the bent portion 121 and the electrode output electrode 210 of the battery cell 200 can be welding or bonding with conductive adhesive. The specific method can be selected according to actual needs, and it only needs to include a conductive connection between the two.

[0044] Optionally, the filling member 130 is formed by an injection molding process, thereby facilitating the formation of the filling member 130 and helping to reduce the manufacturing cost of the filling member 130 .

[0045] refer to Figure 1-Figure 2As shown, the filling piece 130 of this embodiment includes a filling portion 131 and two abutting portions 132 connected to the filling portion 131. The filling portion 131 fills the mounting groove 111, and the abutting portions 132 abut against the surface of the top cover sheet 110 facing the bending portion 121 and the surface of the top cover sheet 110 away from the bending portion 121. It can be understood that the filling piece 130 of this embodiment is provided with abutting portions 132 on both sides of the filling portion 131. In this way, after the filling piece 130 is formed, the two abutting portions 132 respectively abut against the two surfaces arranged opposite to the top cover sheet 110, and the entire filling piece 130 is firmly clamped on the top cover sheet 110, thereby preventing the filling piece 130 from falling off from the top cover sheet 110.

[0046] Of course, it should be supplemented here that, in an alternative embodiment, the number of the stop portion 132 is one, and the stop portion 132 stops at the surface of the top cover sheet 110 facing the bending portion 121; in another alternative embodiment, the number of the stop portion 132 is one, and the stop portion 132 stops at the surface of the top cover sheet 110 away from the bending portion 121.

[0047] Preferably, the width of the filling portion 131 is equal to the width of the mounting groove 111, and the width of the stop portion 132 is greater than the width of the filling portion 131. Thus, the entire filling piece 130 can be firmly clamped on the top cover sheet 110, avoiding the filling piece 130 from falling off from the top cover sheet 110.

[0048] refer to Figure 1As shown, part of the bending portion 121 overlaps with the filling piece 130, and another part of the bending portion 121 extends out of the filling piece 130; the battery cover 100 also includes an insulating member 140, and the insulating member 140 is located between the bending portion 121 and the top cover sheet 110. It is understandable that it should be noted that part of the bending portion 121 overlaps with the filling piece 130, and the overlap here can refer to the surface of the bending portion 121 and the surface of the filling piece 130 being stopped, and it can also be that there is a certain gap between the surface of the bending portion 121 and the surface of the filling piece 130, but the projections of the two in the vertical direction have an overlapping area. The additional insulating member 140 can further improve the insulation performance between the bending portion 121 and the top cover sheet 110, ensuring that the entire lead-out member 120 and the top cover sheet 110 are insulated, thereby avoiding the phenomenon of the top cover sheet 110 being charged. It should be noted that it is understandable that, in the actual assembly process, the width of the bending portion 121 may change according to the width of the pole piece output pole 210 of the actual battery cell 200. Since the insulating member 140 is added in this embodiment to further improve the insulation performance between the bending portion 121 and the top cover sheet 110, when forming the filling member 130, it is not necessary to match and adjust the filling member 130 according to the width of the bending portion 121. It is only necessary to install the insulating member 140 of different widths according to actual needs. Therefore, only one set of molds is needed to form a filling member 130 of a specified size, which greatly reduces the manufacturing cost of the battery cover 100.

[0049] It is necessary to explain additionally that Figure 2 As shown, when the filling piece 130 includes a filling portion 131 and a stop portion 132 , another portion of the bent portion 121 is disposed beyond the stop portion 132 .

[0050] Preferably, the insulating member 140 is bonded to the bent portion 121. It is understandable that in the actual working process, before the injection molding process, the insulating member 140 is first bonded to the bent portion 121 and then the injection molding process is performed, so that it can be ensured that the insulating member 140 does not shake relative to the bent portion 121 during the injection molding process, thereby ensuring the installation stability of the insulating member 140.

[0051] Preferably, the insulating member 140 is sandwiched between the bent portion 121 and the top cover sheet 110. Thus, one side of the insulating member 140 abuts against the bent portion 121, and the other side abuts against the filling member 130, which can further improve the installation stability of the insulating member 140.

[0052] refer to Figure 1-Figure 2As shown, the top cover sheet 110 has an open accommodating cavity 112, the open end of the accommodating cavity 112 is arranged toward the battery cell 200, the mounting groove 111 is arranged through the top wall of the accommodating cavity 112 away from the battery cell 200, and the bending portion 121 is located in the accommodating cavity 112. It can be understood that accommodating the bending portion 121 in the accommodating cavity 112 can prevent the bending portion 121 from protruding out of the top cover sheet 110 after the lead-out piece 120 is connected to the top cover sheet 110. When the bending portion 121 is connected to the pole piece output pole 210 of the battery cell 200, the connection area between the two is also protected in the accommodating cavity 112, so that the stability of the connection area between the bending portion 121 and the pole piece output pole 210 can be better guaranteed, thereby ensuring a stable conductive connection between the lead-out piece 120 and the battery cell 200.

[0053] like Figure 2 and Figure 3 As shown, the battery cover 100 further includes a fixing card 150, which is installed in the mounting groove 111 and is used to clamp the lead-out piece 120. At least a portion of the fixing card 150 is enclosed in the filling piece 130 and is insulated from the top cover sheet 110. It can be understood that in the actual assembly process, the fixing card 150 is first installed in the mounting groove 111, and then the lead-out piece 120 is inserted into the mounting groove 111. Due to the clamping effect of the fixing card 150, the lead-out piece 120 can be positioned in the mounting groove 111, and the lead-out piece 120 will not shake when the filling piece 130 is formed, thereby ensuring the connection stability between the lead-out piece 120 and the top cover sheet 110.

[0054] Optionally, the fixing card 150 is installed on the side wall of the lead-out member 120 so that the side wall of the lead-out member 120 does not abut against the side wall of the mounting groove 111, thereby ensuring the insulation between the lead-out member 120 and the top cover sheet 110 and preventing the top cover sheet 110 from conducting electricity. At least a portion of the fixing card 150 is enclosed in the filling member 130, so as to improve the stability of the fixing card 150 on the one hand and ensure that the fixing card 150 is insulated from the top cover sheet 110 on the other hand.

[0055] Optionally, the fixing card 150 is completely enclosed in the filling piece 130. During the actual injection molding process, when the filling piece 130 is fully formed, the fixing card 150 cannot be observed from the outside. In this way, there is no need to remove the fixing card 150 after the assembly is completed. On the one hand, the assembly of the battery cover 100 is simplified, and on the other hand, the aesthetics of the battery cover 100 is improved.

[0056] refer to Figure 3As shown, the lead-out piece 120 is provided with a positioning notch 122, and the fixing card 150 is provided with a positioning protrusion 1521 that cooperates with the positioning notch 122. It can be understood that in the actual assembly process, the fixing card 150 is first installed in the installation groove 111, and then the lead-out piece 120 is inserted into the installation groove 111, and the positioning notch 122 is aligned with the positioning protrusion 1521. The lead-out piece 120 can be fixed in the installation groove 111 through the positioning cooperation between the positioning notch 122 and the positioning protrusion 1521, and the lead-out piece 120 will not shake when the filling piece 130 is formed by the injection molding process, thereby ensuring the connection stability between the lead-out piece 120 and the top cover sheet 110.

[0057] Preferably, positioning notches 122 are provided on opposite sides of the lead-out member 120, and there are two fixing clips 150, which are respectively located on both sides of the lead-out member 120. It can be understood that by clamping the lead-out member 120 with two fixing clips 150, the connection stability between the lead-out member 120 and the top cover sheet 110 and the insulating member 140 can be ensured, thereby preventing the lead-out member 120 from falling off from the top cover sheet 110 and preventing the top cover sheet 110 from being charged.

[0058] More preferably, the opening directions of the positioning notches 122 on the two opposite sides of the lead-out member 120 are arranged in opposite directions, thereby further improving the clamping effect of the fixing card 150 on the lead-out member 120 .

[0059] Of course, it should be noted that in other embodiments of the present invention, the distribution and number of the positioning notches 122 can be adjusted according to actual needs and are not limited to the above description.

[0060] Further, refer to Figure 4 As shown, the fixing card 150 is further provided with abutment protrusions 1522 located on both sides of the positioning protrusion 1521, and the two abutment protrusions 1522 are respectively abutted against the two oppositely arranged sides of the lead-out piece 120. It can be understood that when the positioning notch 122 is matched with the positioning protrusion 1521, the lead-out piece 120 may still shake along the width direction of the mounting groove 111. The abutment protrusions 1522 located on both sides of the positioning protrusion 1521 added to the fixing card 150 can play the role of clamping the lead-out piece 120, and prevent the lead-out piece 120 from shaking along the width direction of the mounting groove 111, thereby ensuring that the lead-out piece 120 maintains a fixed posture when the filling piece 130 is formed by the injection molding process, thereby ensuring the connection stability between the lead-out piece 120 and the top cover sheet 110.

[0061] Further, refer to Figure 4As shown, the fixing card 150 includes a connected fixing portion 151 and a clamping portion 152, the fixing portion 151 abuts against the surface of the top cover sheet 110 away from the bending portion 121, and the clamping portion 152 is installed in the installation groove 111. It can be understood that in the actual assembly process, it is only necessary to insert the clamping portion 152 into the installation groove 111 and make the fixing portion 151 abut against the surface of the top cover sheet 110 to complete the installation of the fixing card 150 relative to the top cover sheet 110. This installation method does not require any connecting parts and adhesive structures, which facilitates the installation of the fixing card 150, thereby facilitating the assembly of the battery cover 100.

[0062] It should be supplemented here that, in an alternative embodiment, the positioning notch 122 is provided on the fixing card 150, and the positioning protrusion 1521 is provided on the lead-out member 120; in another alternative embodiment, the first positioning notch 122 and the second positioning protrusion 1521 are provided on the fixing card 150 at the same time, and the first positioning protrusion 1521 and the second positioning notch 122 are also provided on the lead-out member 120 at the same time, wherein the first positioning notch 122 cooperates with the first positioning protrusion 1521, and the second positioning protrusion 1521 cooperates with the second positioning notch 122. Therefore, in the embodiment of the utility model, the positioning notch 122 and the positioning protrusion 1521 can be distributed according to actual conditions.

[0063] The utility model also discloses a battery, such as Figure 5-Figure 8 As shown, the battery disclosed in the utility model includes the battery cover 100, the battery cell 200 and the shell 300 mentioned above, the battery cell 200 is installed inside the shell 300, the shell 300 has an open end, and the battery cover 100 is buckled on the open end of the shell 300. The top cover sheet 110 of the battery cover 100 is connected to the shell 300, and the end of the lead-out piece 120 of the battery cover 100 extending into the shell 300 can be bent to form a bent portion 121, and the bent portion 121 is conductively connected to the pole piece output pole 210 of the battery cell 200. Due to the battery cover 100 mentioned above, in the actual assembly process, the lead-out piece 120 is passed through the installation groove 111, and the lead-out piece 120 is bent toward one end of the battery cell 200, and then a filling piece 130 is formed in the installation groove 111, and the lead-out piece 120 is fixed to the top cover sheet 110 while ensuring that the lead-out piece 120 and the top cover sheet 110 are insulated, and then the bent portion 121 is connected to the pole piece output pole 210 of the battery cell 200, and finally the connected top cover sheet 110 and the battery cell 200 are installed into the shell 300. Since the battery of this embodiment only includes the battery cover 100, the battery cell 200 and the shell 300 mentioned above, it has a simple structure and is easy to assemble, which is conducive to improving the assembly efficiency of the battery.

[0064] The battery disclosed in the present invention can be divided into two types according to the position of the pole piece output pole 210 of the battery cell 200, as shown in FIG. Figure 5-Figure 6As shown, in a specific embodiment, one end of the housing 300 is open, and the two pole piece output poles 210 of the battery cell 200 are located at one end of the battery cell 200 and are arranged toward the open end of the housing 300. Figure 7-Figure 8 As shown, both ends of the shell 300 are open, and the two pole piece output poles 210 of the battery cell 200 are located at both ends of the battery cell 200 and are respectively arranged toward the two open ends of the shell 300 .

[0065] It should be supplemented that the battery disclosed in the utility model further includes a liquid injection structure 500 and an explosion-proof structure 400. The liquid injection structure 500 is a liquid injection hole formed on the top cover sheet 110, which is sealed by a sealing nail after the liquid injection is completed, or it can be a liquid injection hole formed on the side wall of the shell 300, which is sealed by a sealing nail after the liquid injection is completed. The explosion-proof structure 400 is an explosion-proof valve, which can be set on the top cover sheet 110 or on the shell 300.

[0066] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery cover, characterized in that: include: A top cover sheet (110), wherein the top cover sheet (110) has a mounting groove (111) extending therethrough; A lead-out piece (120), the lead-out piece (120) being inserted into the mounting groove (111), the portion of the lead-out piece (120) located on the side of the top cover sheet (110) facing the battery cell (200) being capable of being bent to form a bent portion (121), the bent portion (121) being used for being electrically connected to a pole piece output pole (210) of the battery cell (200); A filling piece (130), at least a portion of which fills the installation groove (111) and is arranged around the lead-out piece (120), so that the lead-out piece (120) and the top cover sheet (110) are insulated from each other.

2. The battery cover according to claim 1, characterized in that: The filling member (130) comprises a filling portion (131) and a stop portion (132) connected to the filling portion (131); the filling portion (131) fills a gap between the mounting groove (111) and the lead-out member (120); and the stop portion (132) stops at a surface of the top cover sheet (110) facing the bending portion (121) and / or a surface of the top cover sheet (110) away from the bending portion (121).

3. The battery cover according to claim 1, characterized in that: A portion of the bent portion (121) is arranged to overlap with the filling piece (130), and another portion of the bent portion (121) extends out of the filling piece (130); The battery cover plate further comprises an insulating member (140), wherein the insulating member (140) is located between the bent portion (121) and the top cover sheet (110).

4. The battery cover according to claim 1, characterized in that: The battery cover plate further comprises a fixing card (150), the fixing card (150) being mounted in the mounting groove (111) and being used for clamping the lead-out member (120), at least a portion of the fixing card (150) being enclosed in the filling member (130) and being insulated from the top cover sheet (110).

5. The battery cover according to claim 4, characterized in that: One of the lead-out piece (120) and the fixing card (150) is provided with a positioning notch (122), and the other is provided with a positioning protrusion (1521) that matches the positioning notch (122).

6. The battery cover according to claim 5, characterized in that: The positioning notch (122) is provided on the lead-out piece (120), the positioning protrusion (1521) is provided on the fixing card (150), and the fixing card (150) is further provided with abutment protrusions (1522) located on both sides of the positioning protrusion (1521), and the two abutment protrusions (1522) respectively abut on two oppositely arranged sides of the lead-out piece (120).

7. The battery cover according to claim 4, characterized in that: The fixing card (150) comprises a connected fixing portion (151) and a clamping portion (152); the fixing portion (151) abuts against a surface of the top cover sheet (110) away from the bending portion (121); and the clamping portion (152) is installed in the installation groove (111).

8. The battery cover according to claim 1, characterized in that: The top cover sheet (110) has an open accommodating cavity (112), the open end of the accommodating cavity (112) is arranged toward the battery core (200), the mounting groove (111) penetrates the top wall of the accommodating cavity (112) facing away from the battery core (200), and the bent portion (121) is located in the accommodating cavity (112).

9. A battery, characterized in that: The invention comprises a battery cover, a battery cell (200) and a shell (300) as claimed in any one of claims 1 to 8, wherein the battery cell (200) is installed inside the shell (300), the shell (300) has an open end, and the battery cover is buckled on the open end of the shell (300); the top cover sheet (110) of the battery cover is connected to the shell (300), and one end of the lead-out piece (120) of the battery cover extending into the shell (300) can be bent to form a bent portion (121), and the bent portion (121) is conductively connected to the pole piece output pole (210) of the battery cell (200).

10. The battery according to claim 9, characterized in that One end of the shell (300) is open, and the two pole piece output poles (210) of the battery cell (200) are located at one end of the battery cell (200) and are arranged toward the open end of the shell (300); or: both ends of the shell (300) are open, and the two pole piece output poles (210) of the battery cell (200) are located at both ends of the battery cell (200) and are arranged toward the two open ends of the shell (300), respectively.

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