A high-performance battery cover and battery

Abstract

This invention discloses a high-performance battery cover plate, comprising an upper and lower aluminum plate and a lower plastic plate distributed vertically. The upper left and right ends of the aluminum plate are respectively provided with a negative terminal cover plate boss and a positive terminal cover plate boss. Both the negative and positive terminal cover plate bosses have bottom openings with grooves. The upper left and right ends of the lower plastic plate are respectively provided with negative and positive terminal lower plastic plate bosses at positions corresponding to the negative and positive terminal cover plate bosses. The negative terminal lower plastic plate boss is inserted upwards into the groove at the bottom of the negative terminal cover plate boss; the positive terminal lower plastic plate boss is inserted upwards into the groove at the bottom of the positive terminal cover plate boss. This invention also discloses a battery. This invention uses only rivets to rivet and fix the connecting piece to the battery cover plate terminal post, which can reduce the installation cost of the connecting piece, improve installation efficiency, reduce the overall manufacturing cost of the battery cell, and improve overall manufacturing efficiency.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a high-performance battery cover and battery. Background Technology

[0002] Currently, lithium-ion batteries have advantages such as high specific energy, high cycle life, and long storage time. They are widely used not only in portable electronic devices (such as mobile phones, digital cameras, and laptops), but also in large and medium-sized electric equipment such as electric vehicles, electric bicycles, and power tools. Therefore, the performance requirements for lithium-ion batteries are becoming increasingly stringent.

[0003] For lithium-ion batteries, there are connecting pieces for connecting the terminals on the battery cover and the tabs on the electrode assembly.

[0004] In existing technologies, connecting pieces are mostly welded to the terminals on the battery cover using laser welding. Therefore, the welding process requires laser welding equipment and matching connecting piece positioning fixtures, which makes the installation process of the connecting pieces complex, costly, and inefficient. This, in turn, makes the overall manufacturing process of the battery cell complex and costly. Summary of the Invention

[0005] The purpose of this invention is to address the technical deficiencies of existing technologies by providing a high-performance battery cover and battery.

[0006] Therefore, the present invention provides a high-performance battery cover plate, which includes an upper and lower aluminum plate and a lower plastic plate distributed vertically;

[0007] The top left and right ends of the aluminum plate are respectively provided with negative end cover plate bosses and positive end cover plate bosses;

[0008] Both the negative end cover plate boss and the positive end cover plate boss have a groove with a bottom opening at the bottom;

[0009] At the top left and right ends of the lower plastic plate, corresponding to the negative end cover plate boss and the positive end cover plate boss, respectively, there are negative end lower plastic plate bosses and positive end lower plastic plate bosses.

[0010] The lower plastic plate boss of the negative terminal is inserted upward into the groove at the bottom of the negative terminal cover plate boss;

[0011] The lower plastic plate boss at the positive end is inserted upwards into the groove at the bottom of the positive end cover plate boss;

[0012] Both the bottom of the plastic plate boss at the negative end and the bottom of the plastic plate boss at the positive end have grooves with bottom openings.

[0013] A negative electrode plastic pad is provided directly above the negative electrode cover plate protrusion; a negative electrode pressure plate is provided in the groove at the top of the negative electrode plastic pad;

[0014] A positive electrode plastic pad is placed directly above the positive electrode cover plate protrusion; a positive electrode pressure plate is placed in the groove at the top of the positive electrode plastic pad;

[0015] A negative electrode sealing ring is embedded from bottom to top in the through holes of the negative electrode cover plate boss and the negative electrode lower plastic plate boss;

[0016] A positive electrode sealing ring is embedded from bottom to top in the through holes of the positive electrode cover plate boss and the positive electrode lower plastic plate boss;

[0017] Directly below the negative electrode sealing ring, from top to bottom, are arranged the negative electrode post and the negative electrode connecting piece;

[0018] Directly below the positive electrode sealing ring, from top to bottom, are arranged the positive electrode post and the positive electrode connecting piece;

[0019] The negative electrode pressure plate, negative electrode plastic pad, negative end cap boss of the aluminum plate, negative end lower plastic plate boss of the lower plastic plate, negative electrode sealing ring, negative electrode post and negative electrode connecting piece are riveted together by a negative electrode rivet.

[0020] The positive electrode pressure plate, positive electrode plastic pad, positive end cap boss of the aluminum plate, positive end lower plastic plate boss of the lower plastic plate, positive electrode sealing ring, positive electrode post and positive electrode connecting piece are riveted together by a positive electrode rivet.

[0021] One end of the negative electrode connector is provided with a negative electrode connector through hole;

[0022] Two symmetrically distributed negative electrode connecting piece stamped bosses are provided on the outside of the negative electrode connecting piece through hole;

[0023] A negative electrode through hole is provided at the center of the negative electrode post;

[0024] Each negative electrode post has a negative electrode post groove at a position corresponding to the stamped boss of each negative electrode connecting piece;

[0025] Two negative electrode connecting pieces are stamped with protrusions and embedded in the corresponding grooves of the two negative electrode posts;

[0026] One end of the positive electrode connector is provided with a positive electrode connector through hole;

[0027] Two symmetrically distributed positive electrode connecting piece stamping bosses are provided on the outside of the positive electrode connecting piece through hole;

[0028] A positive electrode through hole is provided at the center of the positive electrode post;

[0029] Each positive electrode post has a groove at a position corresponding to the stamped boss of each positive electrode connector;

[0030] Two positive electrode connecting pieces are stamped with bosses and embedded in the grooves of two positive electrode posts.

[0031] Preferably, the aluminum plate has a vent in the middle, and an explosion-proof film is welded to cover the vent.

[0032] A ventilation mesh is installed on the lower plastic sheet at the position corresponding to the explosion-proof film.

[0033] Preferably, the core of the negative electrode rivet passes through the negative electrode connecting piece, the negative electrode post, the negative electrode sealing ring, the negative end lower plastic plate boss of the lower plastic plate, the negative end cover plate boss of the aluminum plate, the negative electrode plastic pad, and the through hole reserved on the negative electrode pressure plate, and is then riveted together with the top surface of the negative electrode pressure plate.

[0034] Preferably, the core of the rivet at the top passes through the positive electrode connecting piece, the positive electrode post, the positive electrode sealing ring, the positive end lower plastic plate boss of the lower plastic plate, the positive end cover plate boss of the aluminum plate, the positive electrode plastic pad, and the through hole reserved on the positive electrode pressure plate, and is then riveted together with the top surface of the positive electrode pressure plate.

[0035] Preferably, the diameter of the through hole on the negative end cover plate boss is smaller than the diameter of the through hole on the negative end lower plastic plate boss;

[0036] The diameter of the through hole on the positive end cap boss is smaller than the diameter of the through hole on the lower plastic plate boss.

[0037] Preferably, the positive electrode post is inserted upward into the groove at the bottom of the plastic plate boss at the bottom of the positive terminal;

[0038] The negative terminal post is inserted upwards into the groove at the bottom of the plastic plate protrusion at the bottom of the negative terminal.

[0039] Preferably, a ring of positive electrode sealing ring protrusions is provided around the upper periphery of the positive electrode sealing ring;

[0040] The upper perimeter of the negative electrode sealing ring has a ring of negative electrode sealing ring protrusions arranged around it.

[0041] Preferably, the positive electrode plastic pad is a plastic pad with added conductive agent.

[0042] In addition, the present invention also provides a battery including the high-performance battery cover described above.

[0043] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides a high-performance battery cover and battery. Its design is scientific. It adopts a novel riveting structure between the connecting piece and the cover plate terminal post. The connecting piece and the battery cover plate terminal post can be riveted and fixed with rivets only. Therefore, it is not necessary to laser weld the connecting piece and the battery cover plate as in the prior art. Thus, it can reduce the installation cost of the connecting piece, improve the installation efficiency, and thereby reduce the overall manufacturing cost of the battery cell and improve the overall manufacturing efficiency, which has significant practical significance.

[0044] Furthermore, in this invention, since the connecting piece is provided with anti-rotation bosses (i.e., negative electrode connecting piece stamping bosses and positive electrode connecting piece stamping bosses), and corresponding grooves are provided on the pole (i.e. positive electrode pole grooves and negative electrode pole grooves), it can reliably play the role of riveting and positioning the connecting piece and the pole, thereby facilitating the installation of the battery cover and the connecting piece, and preventing the connecting piece from rotating during riveting.

[0045] The application of this invention eliminates the need for laser welding equipment and positioning fixtures in the installation process of the connecting piece. This invention fixes the connecting piece and the pole with rivets, replacing the existing laser welding technology, thereby reducing the manufacturing cost of the battery cell. Attached Figure Description

[0046] Figure 1 A three-dimensional exploded view of a high-performance battery cover provided by the present invention;

[0047] Figure 2a A cross-sectional view of the left negative electrode portion of a high-performance battery cover provided by the present invention;

[0048] Figure 2b A cross-sectional view of the right positive electrode portion of a high-performance battery cover provided by the present invention;

[0049] Figure 3a A schematic diagram of a negative electrode connecting piece in a high-performance battery cover provided by the present invention;

[0050] Figure 3b A schematic diagram of a positive electrode connecting piece in a high-performance battery cover provided by the present invention;

[0051] Figure 4a A schematic diagram of a negative electrode post in a high-performance battery cover provided by the present invention;

[0052] Figure 4b This invention provides a schematic diagram of the structure of a positive electrode post in a high-performance battery cover. Detailed Implementation

[0053] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] See Figures 1 to 4b The present invention provides a high-performance battery cover plate, comprising an upper and lower aluminum plate 100 and a lower plastic plate 200 distributed vertically;

[0058] The aluminum plate 100 and the lower plastic plate 200 are snapped together;

[0059] The top left and right ends of the aluminum plate 100 are respectively provided with a negative end cover plate boss 102 and a positive end cover plate boss 101;

[0060] The bottom of both the negative end cover plate boss 102 and the positive end cover plate boss 101 has a groove with a bottom opening;

[0061] The top left and right ends of the lower plastic plate 200 are respectively provided with negative end lower plastic plate boss 202 and positive end lower plastic plate boss 201 at positions corresponding to negative end cover plate boss 102 and positive end cover plate boss 101.

[0062] The lower plastic plate boss 202 of the negative end is embedded upward into the groove at the bottom of the negative end cover plate boss 102;

[0063] The lower plastic plate boss 201 of the positive end is inserted upward into the groove at the bottom of the positive end cover plate boss 101;

[0064] The bottom of both the plastic plate boss 202 at the negative end and the plastic plate boss 201 at the positive end has a groove with a bottom opening.

[0065] A negative electrode plastic pad 22 is provided directly above the negative electrode cover plate protrusion 102; a negative electrode pressure plate 21 is provided in the top groove of the negative electrode plastic pad 12;

[0066] A positive electrode plastic pad 12 is provided directly above the positive electrode cover plate protrusion 101; a positive electrode pressure plate 11 is provided in the top groove of the positive electrode plastic pad 11;

[0067] A negative electrode sealing ring 23 is embedded from bottom to top in the through holes of the negative electrode cover plate boss 102 and the negative electrode lower plastic plate boss 202;

[0068] A positive electrode sealing ring 13 is embedded from bottom to top in the through holes of the positive electrode cover plate boss 101 and the positive electrode lower plastic plate boss 201.

[0069] Directly below the negative electrode sealing ring 23, from top to bottom, are arranged a negative electrode post 24 and a negative electrode connecting piece 25;

[0070] Directly below the positive electrode sealing ring 13, from top to bottom, are arranged a positive electrode post 14 and a positive electrode connecting piece 15;

[0071] The negative electrode pressure plate 21, negative electrode plastic pad 22, negative electrode end cap boss 102 of the aluminum plate 100, negative electrode lower plastic plate boss 202 of the lower plastic plate 200, negative electrode sealing ring 23, negative electrode post 24 and negative electrode connecting piece 25 are riveted together by a negative electrode rivet 26.

[0072] The positive electrode pressure plate 11, the positive electrode plastic pad 12, the positive end cap boss 101 of the aluminum plate 100, the positive end lower plastic plate boss 201 of the lower plastic plate 200, the positive electrode sealing ring 13, the positive electrode post 14, and the positive electrode connecting piece 15 are riveted together by a positive electrode rivet 16.

[0073] It should be noted that in this invention, the aluminum plate is a common flat battery cover.

[0074] In this invention, specifically, the aluminum plate 100 and the lower plastic plate 200 are fixed together by snap fasteners.

[0075] In this invention, specifically, the aluminum plate 100 has a vent 3 in the middle, and an explosion-proof film 4 is welded to the vent 3. Therefore, by providing the explosion-proof film 4, when the internal air pressure of the battery installed in the battery cover exceeds the pressure that the explosion-proof film 4 can withstand, the gas inside the battery can be released in a timely manner, ultimately reducing the pressure and keeping the internal air pressure of the battery in a relatively stable state, thereby ensuring the safety of battery use.

[0076] Correspondingly, a ventilation mesh 5 is provided on the lower plastic sheet at the position corresponding to the explosion-proof film 4 (i.e., directly below the explosion-proof film 4).

[0077] In this invention, specifically, the core of the negative electrode rivet 26 passes through the negative electrode connecting piece 25, the negative electrode post 24, the negative electrode sealing ring 23, the negative end lower plastic plate boss 202 of the lower plastic plate 200, the negative end cover plate boss 102 of the aluminum plate 100, the negative electrode plastic pad 22, and the negative electrode pressure plate 21 through holes from bottom to top, and is then riveted together with the top surface of the negative electrode pressure plate 21.

[0078] In this invention, specifically, the core of the positive electrode rivet 16 passes through the pre-drilled holes in the positive electrode connecting piece 15, the positive electrode post 14, the positive electrode sealing ring 13, the positive end lower plastic plate boss 201 of the lower plastic plate 200, the positive end cover plate boss 101 of the aluminum plate 100, the positive electrode plastic pad 12, and the positive electrode pressure plate 11 from bottom to top, and is then riveted to the top surface of the positive electrode pressure plate 11.

[0079] It should be noted that, in this invention, by compressing the height of the positive and negative electrode rivets and increasing their diameter, a good fixing effect is achieved. Simultaneously, the compression of the positive and negative electrode sealing rings through the rivet compression operation reduces their thickness by 30%-40%. This compressed sealing ring reliably fills the through holes in the aluminum plate and the lower plastic plate, enhancing the overall sealing effect of the battery cover.

[0080] In this invention, specifically, the diameter of the through hole on the negative end cover plate boss 102 is smaller than the diameter of the through hole on the negative end lower plastic plate boss 202; therefore, reliable embedding of the negative end sealing ring can be guaranteed.

[0081] The diameter of the through hole on the positive terminal cover boss 101 is smaller than the diameter of the through hole on the lower plastic plate boss 201 of the positive terminal. Therefore, reliable insertion of the positive terminal sealing ring can be guaranteed.

[0082] In this invention, specifically, the negative electrode plastic pad 22 and the positive electrode plastic pad 12 are preferably insulating plastic (insulating polyphenylene sulfide PPS plastic) gaskets.

[0083] In this invention, specifically, the positive electrode post 14 is inserted upward into the groove at the bottom of the plastic plate protrusion 201 at the bottom of the positive electrode;

[0084] The negative terminal post 24 is inserted upward into the groove at the bottom of the plastic plate protrusion 202 at the bottom of the negative terminal.

[0085] It should be noted that, in this invention, since the lower plastic plate protrusion 202 of the negative terminal is embedded upward into the groove at the bottom of the lower plastic plate protrusion 102 of the negative terminal, and the lower plastic plate protrusion 201 of the positive terminal is embedded upward into the groove at the bottom of the lower plastic plate protrusion 101 of the positive terminal, and the positive terminal post 14 is embedded upward into the groove at the bottom of the lower plastic plate protrusion 201 of the positive terminal and the negative terminal post 24 is embedded upward into the groove at the bottom of the lower plastic plate protrusion 202 of the negative terminal, the overall thickness of the battery cover in the vertical direction can be saved, and the internal space of the battery cell can be increased.

[0086] It should be noted that, in this invention, since both the aluminum plate 100 and the lower plastic plate 200 are provided with upwardly protruding structures (i.e., corresponding bosses), the positive electrode post and the negative electrode post can be embedded in the lower plastic plate, thereby effectively reducing the thickness of the electrode post and saving internal space of the battery cell.

[0087] In this invention, see Figure 3a As shown, one end of the negative electrode connecting piece 25 is provided with a negative electrode connecting piece through hole 251;

[0088] Two symmetrically distributed negative electrode connecting piece stamping bosses 252 are provided on the outside of the negative electrode connecting piece through hole 251;

[0089] See Figure 4a As shown, a negative electrode post through hole 241 is provided at the center of the negative electrode post 24;

[0090] The negative electrode post 24 is provided with a negative electrode post groove 242 at a position corresponding to the stamped boss 252 of each negative electrode connecting piece;

[0091] Two negative electrode connecting pieces are stamped with bosses 252, which are embedded in the two negative electrode post grooves 242.

[0092] In this invention, see Figure 3b As shown, a positive electrode connection piece through hole 151 is provided at one end of the positive electrode connection piece 15;

[0093] Two symmetrically distributed positive electrode connecting piece stamping bosses 152 are provided on the outside of the positive electrode connecting piece through hole 151;

[0094] See Figure 4b As shown, a positive electrode through hole 141 is provided at the center of the positive electrode post 14;

[0095] The positive electrode post 14 is provided with a positive electrode post groove 142 at a position corresponding to the stamped boss 152 of each positive electrode connecting piece;

[0096] Two positive electrode connecting pieces are stamped with bosses 152, which are embedded in the two positive electrode post grooves 142.

[0097] It should be noted that, in this invention, the negative electrode connecting piece stamped boss 252 on the negative electrode connecting piece 25 is connected to the negative electrode post groove 242 on the negative electrode post 24, and the positive electrode connecting piece stamped boss 152 on the positive electrode connecting piece 15 is connected to the negative electrode post groove 142 on the positive electrode post 14. This provides good positioning and error prevention, reduces the investment in existing positioning tooling equipment, and avoids the possibility of using the wrong parts. Furthermore, since both the negative electrode connecting piece 25 and the positive electrode connecting piece 15 have two bosses (i.e., the negative electrode connecting piece stamped boss 252 and the positive electrode connecting piece stamped boss 152), rotation of the two connecting pieces during riveting is also prevented.

[0098] In this invention, for specific implementation, see [link to relevant documentation]. Figure 2a and Figure 2b As shown, the upper perimeter of the positive electrode sealing ring 13 and the negative electrode sealing ring 23 are respectively provided with a positive electrode sealing ring protrusion 130 and a negative electrode sealing ring protrusion 230. Therefore, the two sealing rings can increase the friction and contact area with the sealed parts, thereby improving the sealing performance of the battery cover.

[0099] In this invention, specifically, the positive electrode plastic pad 12 is a plastic pad with added conductive agent, specifically a plastic pad obtained by adding conductive agent to plastic.

[0100] It should be noted that, given that existing batteries are prone to electrochemical corrosion, it is necessary to increase the potential of the battery casing to prevent electrochemical corrosion. This invention adds a conductive agent to the positive electrode plastic pad, making the battery casing positively charged, thereby increasing the overall potential of the battery casing and preventing the risk of electrochemical corrosion of the aluminum battery casing with the electrolyte at low potential, thus reducing the risk of electrochemical corrosion of the battery casing.

[0101] In this invention, the negative electrode uses a negative electrode plastic pad 22, and the positive electrode uses a positive electrode plastic pad 12 with added conductive agent. Both materials are plastic. Only by adding conductive agent to the positive electrode plastic pad 12 can the battery be positively charged after assembly and the battery casing be positively charged, which can effectively prevent corrosion.

[0102] Based on the high-performance battery cover provided by the present invention, the present invention also provides a battery, including... Figures 1 to 4b The aforementioned high-performance battery cover.

[0103] In summary, compared with the prior art, the high-performance battery cover and battery provided by this invention are scientifically designed. It adopts a novel riveting structure between the connecting piece and the cover plate terminal post, which can be riveted and fixed to the battery cover plate terminal post with only rivets. Therefore, it is not necessary to laser weld the connecting piece to the battery cover plate as in the prior art. Thus, it can reduce the installation cost of the connecting piece, improve the installation efficiency, and thereby reduce the overall manufacturing cost of the battery cell and improve the overall manufacturing efficiency, which has significant practical significance.

[0104] Furthermore, in this invention, since the connecting piece is provided with anti-rotation bosses (i.e., negative electrode connecting piece stamping bosses and positive electrode connecting piece stamping bosses), and corresponding grooves are provided on the pole (i.e. positive electrode pole grooves and negative electrode pole grooves), it can reliably play the role of riveting and positioning the connecting piece and the pole, thereby facilitating the installation of the battery cover and the connecting piece, and preventing the connecting piece from rotating during riveting.

[0105] The application of this invention eliminates the need for laser welding equipment and positioning fixtures in the installation process of the connecting piece. This invention fixes the connecting piece and the pole with rivets, replacing the existing laser welding technology, thereby reducing the manufacturing cost of the battery cell.

[0106] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A high-performance battery cover, characterized in that, It includes an upper and lower aluminum plate (100) and a lower plastic plate (200). The top left and right ends of the aluminum plate (100) are respectively provided with a negative end cover plate boss (102) and a positive end cover plate boss (101). The bottom of both the negative end cover plate boss (102) and the positive end cover plate boss (101) has a groove with a bottom opening; The bottom left and right ends of the lower plastic plate (200) are respectively provided with a negative end lower plastic plate boss (202) and a positive end lower plastic plate boss (201) at positions corresponding to the negative end cover plate boss (102) and the positive end cover plate boss (101). The lower plastic plate boss (202) of the negative end is inserted upward into the groove at the bottom of the negative end cover plate boss (102); The lower plastic plate boss (201) at the positive end is inserted upward into the groove at the bottom of the positive end cover plate boss (101); The bottom of both the negative end plastic plate boss (202) and the positive end plastic plate boss (201) has a groove with a bottom opening; A negative electrode plastic pad (22) is provided directly above the negative electrode cover plate protrusion (102); a negative electrode pressure plate (21) is provided in the top groove of the negative electrode plastic pad (22). A positive electrode plastic pad (12) is provided directly above the positive electrode cover plate protrusion (101); a positive electrode pressure plate (11) is provided in the top groove of the positive electrode plastic pad (12). A negative electrode sealing ring (23) is embedded from bottom to top in the through holes of the negative electrode cover plate boss (102) and the negative electrode lower plastic plate boss (202). A positive electrode sealing ring (13) is embedded from bottom to top in the through holes of the positive electrode cover plate boss (101) and the positive electrode lower plastic plate boss (201). Directly below the negative electrode sealing ring (23), from top to bottom, are arranged a negative electrode post (24) and a negative electrode connecting piece (25). Directly below the positive electrode sealing ring (13), from top to bottom, there are a positive electrode post (14) and a positive electrode connecting piece (15). The negative electrode pressure plate (21), negative electrode plastic pad (22), negative end cap boss (102) of the aluminum plate (100), negative end lower plastic plate boss (202) of the lower plastic plate (200), negative electrode sealing ring (23), negative electrode post (24) and negative electrode connecting piece (25) are riveted together by a negative electrode rivet (26); The positive electrode pressure plate (11), the positive electrode plastic pad (12), the positive end cover plate boss (101) of the aluminum plate (100), the positive end lower plastic plate boss (201) of the lower plastic plate (200), the positive electrode sealing ring (13), the positive electrode post (14) and the positive electrode connecting piece (15) are riveted together by a positive electrode rivet (16); One end of the negative electrode connecting piece (25) is provided with a negative electrode connecting piece through hole (251). Two symmetrically distributed negative electrode connecting piece stamped bosses (252) are provided on the outside of the negative electrode connecting piece through hole (251). A negative electrode post through hole (241) is provided at the center of the negative electrode post (24). The negative electrode post (24) is provided with a negative electrode post groove (242) at a position corresponding to the stamped boss (252) of each negative electrode connecting piece. Two negative electrode connecting pieces are stamped with bosses (252) and embedded in the grooves (242) of the two negative electrode posts; One end of the positive electrode connecting piece (15) is provided with a positive electrode connecting piece through hole (151). Two symmetrically distributed positive electrode connecting piece stamping bosses (152) are provided on the outside of the positive electrode connecting piece through hole (151). A positive electrode through hole (141) is provided at the center of the positive electrode post (14). The positive electrode post (14) has a positive electrode post groove (142) at a position corresponding to the stamped boss (152) of each positive electrode connecting piece. Two positive electrode connecting pieces are stamped with bosses (152) and embedded in the grooves (142) of the two positive electrode posts. The positive electrode plastic pad (12) is a plastic pad with added conductive agent.

2. The high-performance battery cover plate as described in claim 1, characterized in that, The aluminum plate (100) has a vent (3) in the middle, and an explosion-proof film (4) is welded over the vent (3). A ventilation mesh (5) is provided on the lower plastic sheet at the position corresponding to the explosion-proof film (4).

3. The high-performance battery cover plate as described in claim 1, characterized in that, The core of the negative electrode rivet (26) passes through the negative electrode connecting piece (25), negative electrode post (24), negative electrode sealing ring (23), negative end lower plastic plate boss (202) of the lower plastic plate (200), negative end cover plate boss (102) of the aluminum plate (100), negative electrode plastic pad (22) and negative electrode pressure plate (21) through the pre-drilled holes from bottom to top, and is then riveted together with the top surface of the negative electrode pressure plate (21).

4. The high-performance battery cover plate as described in claim 1, characterized in that, The core of the rivet (16) passes through the pre-drilled holes in the positive electrode connecting piece (15), positive electrode post (14), positive electrode sealing ring (13), lower plastic plate boss (201) of the positive end of the lower plastic plate (200), positive end cover plate boss (101) of the aluminum plate (100), positive electrode plastic pad (12) and positive electrode pressure plate (11) from bottom to top, and is then riveted to the top surface of the positive electrode pressure plate (11).

5. The high-performance battery cover plate as described in claim 1, characterized in that, The diameter of the through hole on the negative end cover plate boss (102) is smaller than the diameter of the through hole on the negative end lower plastic plate boss (202); The diameter of the through hole on the positive end cap boss (101) is smaller than the diameter of the through hole on the lower plastic plate boss (201).

6. The high-performance battery cover plate as described in claim 1, characterized in that, The positive electrode post (14) is inserted upward into the groove at the bottom of the plastic plate boss (201) at the bottom of the positive electrode; The negative electrode post (24) is inserted upward into the groove at the bottom of the plastic plate boss (202) at the negative end.

7. The high-performance battery cover plate as described in claim 1, characterized in that, A ring of positive electrode sealing ring protrusions (130) is arranged around the upper periphery of the positive electrode sealing ring (13). The upper perimeter of the negative electrode sealing ring (23) is surrounded by a ring of negative electrode sealing ring protrusions (230).

8. A battery, characterized in that, Includes the high-performance battery cover as described in any one of claims 1-7.

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