Electrode terminal, battery cover plate assembly, battery and electric equipment

Abstract

The utility model provides an electrode terminal, a battery cover plate assembly, a battery and electric equipment. The electrode terminal comprises a pole column, a first electrode and a second electrode, the sealing element is an annular element with a channel, and the sealing element is arranged on the periphery of the pole in a surrounding manner; and the metal coating at least covers one end of the pole along the axial direction of the pole so as to be electrically connected with external electric equipment. According to the electrode terminal provided by the embodiment of the utility model, the preparation of the metal coating can be realized through a metal coating process, the use of thicker metal caps and the like can be reduced, the risk of brazing holes is reduced, and the air tightness and the bonding strength of the electrode terminal can also be improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology. Specifically, it relates to an electrode terminal, a battery cover assembly, a battery, and an electrical device. Background Art

[0002] Existing electrode terminals are typically assembled by riveting the electrode post and sealing ring or by connecting them through a solder layer, which suffers from poor airtightness. Furthermore, when using a solder layer for welding, not only is airtightness poor, but the resulting electrode terminals also have low tensile strength and high cost. Utility Model Content

[0003] One objective of this invention is to provide a new technical solution for electrode terminals, which can at least solve at least one of the technical problems of poor airtightness, low tensile strength, and high cost of existing electrode terminals.

[0004] Another objective of this invention is to provide a new technical solution for a battery cover assembly, which includes the aforementioned electrode terminals.

[0005] Another objective of this invention is to provide a new technical solution for a battery, which includes the aforementioned battery cover assembly.

[0006] Another objective of this invention is to provide a new technical solution for an electrical device, which includes the aforementioned battery.

[0007] According to a first aspect of the present invention, an electrode terminal is provided, comprising: a pole; a sealing member, the sealing member being an annular member having a channel, the sealing member being disposed around the outer periphery of the pole; and a metal plating layer, the metal plating layer covering at least one end of the pole along the axial direction of the pole for electrical connection with an external electrical device.

[0008] Optionally, the electrode terminal further includes: a cover plate connector, the cover plate connector being disposed on the sealing member, the cover plate connector and the electrode post being connected to different positions of the sealing member respectively, and the cover plate connector being used to connect with the cover plate.

[0009] Optionally, the seal and the cover plate connector are brazed together.

[0010] Optionally, the cover plate connector and the pole post are metal parts of the same material.

[0011] Optionally, the metal plating also covers the cover plate connector.

[0012] Optionally, the metal plating also covers the outer surface of the seal.

[0013] Optionally, the pole post includes: a column body on which the sealing element is sleeved; and a wing portion located at one end of the column body along its axial direction, the outer edge of the wing portion extending beyond the outer surface of the column body; wherein the sealing element is connected to the column body and / or the wing portion.

[0014] Optionally, the pole and the seal are brazed together.

[0015] Optionally, the portion of the pole that is brazed to the seal is provided with an oxide layer.

[0016] Optionally, the electrode terminal is a negative terminal, the electrode post is a copper post, the sealing element is a white ceramic ring, and the metal plating layer is a nickel layer.

[0017] According to a second aspect of the present invention, a battery cover assembly is provided, comprising: a cover plate having a mounting hole; a positive terminal and a negative terminal, wherein the positive terminal or the negative terminal is mounted in the mounting hole, and the positive terminal and / or the negative terminal is any of the electrode terminals described above.

[0018] According to a third aspect of the present invention, a battery is provided, comprising any of the battery cover assemblies described above.

[0019] According to a fourth aspect of the present invention, an electrical device is provided, comprising any of the batteries described above.

[0020] The electrode terminals of this utility model embodiment can be prepared by metal plating process, which can reduce the use of thick metal caps, reduce the risk of brazing voids, and improve the airtightness and bonding strength of the electrode terminals.

[0021] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0023] Figure 1 An exploded view of an electrode terminal provided for an embodiment of this utility model;

[0024] Figure 2 An assembly diagram of an electrode terminal provided for an embodiment of this utility model;

[0025] Figure 3 A cross-sectional view of an electrode terminal provided for an embodiment of this utility model;

[0026] Figure 4 for Figure 3 A magnified view of region A, shown in the middle circle.

[0027] Figure label:

[0028] Electrode terminal 100;

[0029] 10. Pole post; 11. Column; 12. Wing;

[0030] Seal 20; Channel 21;

[0031] Cover plate connector 30;

[0032] Metal coating 40. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] The electrode terminal 100 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] like Figures 1 to 4 As shown, the electrode terminal 100 according to an embodiment of the present invention includes an electrode post 10, a sealing member 20, and a metal plating layer 40.

[0040] Specifically, the seal 20 is an annular member with a channel, and the seal 20 is arranged around the outer periphery of the pole post 10. Along the axial direction of the pole post 10, the metal plating layer 40 covers at least one end of the pole post 10 for electrical connection with external electrical equipment.

[0041] In other words, the seal 20 is an annular member with a channel 21. One end of the electrode post 10 extends into the channel 21 of the seal 20, and the seal 20 can provide a sealing effect. For example, when the electrode terminal 100 is installed in the mounting hole of the battery cover, at least a portion of the seal 20 can be sandwiched between the outer surface of the electrode post 10 and the inner wall of the mounting hole, achieving a sealing effect. That is, the seal 20 can be fitted over at least a portion of the outer side of the electrode post 10, which not only expands the sealing range of the electrode post 10 but also increases the distribution area of ​​the eutectic interface formed between the seal 20 and the electrode post 10. In addition, by using an annular seal 20, it is also beneficial to improve the assembly efficiency between the seal 20 and the electrode post 10.

[0042] Furthermore, one end of the electrode post 10 can be exposed from the seal 20 and covered with a metal plating layer 40, which facilitates the electrical connection between the electrode terminal 100 and external electrical equipment. It should be noted that the metal plating layer 40 and the electrode post 10 can be different metals to meet the requirements for connection with external electrical equipment. For example, a nickel layer can be applied to the upper end of the electrode post 10, serving as a nickel cap. This nickel cap can be electrically connected to the external electrical equipment via an aluminum cap. In other words, by providing a nickel cap, it is beneficial to subsequently weld the nickel cap to the aluminum cap, which can then be connected to the external electrical equipment. Therefore, the metal plating layer 40 corresponding to one end of the electrode post 10 can act as a transition layer and also facilitates the extraction of current from the electrode post 10.

[0043] Furthermore, in this embodiment, the metal plating layer 40 can be prepared by the metal plating layer 40 process. For example, when forming a nickel cap by tin plating, the use of a thicker nickel cap can be reduced, thereby reducing the risk of brazing voids.

[0044] According to one embodiment of this utility model, the electrode terminal 100 further includes a cover plate connector 30, which is disposed on the sealing member 20. The cover plate connector 30 and the electrode post 10 are respectively connected to different positions of the sealing member 20, and the cover plate connector 30 is used to connect with the cover plate. For example, when the electrode post 10 extends in the vertical direction, the cover plate connector 30 can be disposed at the lower end of the sealing member 20. As another example, a white ceramic ring is selected as the sealing member 20, a copper post is selected as the electrode post 10, and a copper ring is selected as the cover plate connector 30. The white ceramic ring can be sleeved on the outer periphery of the post 11. When the copper post extends in the vertical direction, the nickel cap can be located at the upper end of the cover 12, the upper end face of the white ceramic ring can be opposite to the lower end face of the cover 12, and the lower end face of the white ceramic ring can be connected to the copper ring.

[0045] The cover plate connector 30 serves as a connector, for example, by covering the lower end of the seal 20. The cover plate connector 30 can connect to the battery cover. Since the upper surface of the cover plate connector 30 connects to the lower end of the seal 20, assembly between the seal 20 and the cover plate can be achieved, reducing the difficulty of directly connecting the seal 20 and the cover plate. Optionally, the cover plate connector 30 can be directly connected to the cover plate, or connected to the cover plate via a disc, etc.

[0046] According to one embodiment of this utility model, the cover plate connector 30 and the sealing element 20 are connected by brazing, and the brazing process has the advantage of being easy to implement. That is to say, the cover plate connector 30 and the sealing element 20 can also achieve eutectic bonding through brazing. It should be noted that the brazing process has the advantage of being easy to implement.

[0047] In some specific embodiments of this utility model, the cover plate connector 30 and the terminal post 10 are metal parts of the same material. For example, the terminal post 10 is made of copper, and the cover plate connector 30 is made of copper ring, which helps to save costs. It can be seen that when the terminal post 10 and the sealing element 20 of some materials are eutectic bonded together, the cover plate connector 30 of the same material can also be eutectic bonded together with the sealing element 20. In this case, the cover plate connector 30 can improve the bonding strength with the sealing element 20 through the eutectic bonding process. For example, the cover plate connector 30 is a copper ring, and the sealing element 20 is a ceramic ring; the copper ring can be eutectic bonded with the ceramic ring. Furthermore, when the cover plate connector 30 is a copper ring, the copper ring greatly improves the subsequent battery encapsulation bonding strength.

[0048] According to one embodiment of this utility model, the metal plating layer 40 also covers the cover plate connector 30. That is, the metal plating layer 40 can cover the cover plate connector 30, and the metal plating layer 40 and the cover plate connector 30 can be made of different metal materials. For example, if the cover plate connector 30 is a copper ring and the metal plating layer 40 is a nickel layer, nickel can be plated on the outside of the cover plate connector 30 during manufacturing to form the metal plating layer 40. The resulting metal plating layer 40 is beneficial for subsequent welding of the aluminum ring.

[0049] In some specific embodiments of this utility model, the metal plating layer 40 simultaneously covers the outer surface of the sealing element 20. Where the cover plate connector 30 makes it difficult to achieve a connection between the sealing element 20 and the cover plate, the metal plating layer 40 can also be provided to achieve an indirect connection between the cover plate connector 30 and the cover plate. Furthermore, since the cover plate connector 30 can reliably connect to the sealing element 20, and the metal plating layer 40 can reliably connect to both the cover plate connector 30 and the cover plate simultaneously, in this embodiment, providing the metal plating layer 40 facilitates a reliable connection between the sealing element 20 and the cover plate.

[0050] Optionally, the metal plating 40 can be prepared in a one-step process, for example, by tin plating the entire sample. Alternatively, a nickel layer can be prepared using a nickel plating process. In this embodiment, the metal plating 40 is prepared using a plating process, which facilitates control over the thickness of the metal plating 40.

[0051] According to one embodiment of the present invention, the pole post 10 includes a column 11 and a wing 12. A sealing member 20 is sleeved on the column 11, and the wing 12 is located at one end of the column 11 along its axial direction, with the outer edge of the wing 12 extending beyond the outer surface of the column 11. The sealing member 20 is connected to the column 11 and / or the wing 12.

[0052] In other words, in this embodiment, the pole post 10 is mainly composed of a column 11 and a wing 12, with the wing 12 located at one end of the column 11. For example, the column 11 extends in the vertical direction, and the wing 12 is located at the upper end of the column 11. After the sealing member 20 is fitted onto the column 11, the wing 12 can be located above the sealing member 20, and the sealing member 20 can be located on the outer periphery of the column 11.

[0053] In this embodiment, the seal 20 is connected to the column 11 and / or the wing 12, offering high flexibility. Furthermore, when the seal 20 is connected to the outer surface of the column 11, the sealing performance between the seal 20 and the column 11 is enhanced; when the seal 20 is connected to the wing 12, the connection difficulty is reduced; and when the seal 20 is connected to both the column 11 and the wing 12, sealing performance at more locations between the seal 20 and the pole post 10 is ensured. In addition, the wing 12 facilitates the limiting of the seal 20 and increases the contact area between the wing and the seal 20.

[0054] Optionally, the pole 10 is a single piece, which facilitates manufacturing and enhances airtightness.

[0055] In some specific embodiments of this utility model, the electrode post 10 and the sealing element 20 are brazed together, which can improve the bonding strength and airtightness. That is, the electrode post 10 and the sealing element 20 are connected by brazing, which has the advantage of being easy to process. In particular, direct brazing reduces the solder layer, such as solder sheet, which can reduce the risk of brazing voids.

[0056] Optionally, in an embodiment, the pole 10 and the seal 20 are eutectic welded, where the eutectic solder undergoes eutectic fusion at a relatively low temperature, and the eutectic alloy directly changes from a solid to a liquid state.

[0057] Preferably, the brazing in this embodiment is contact reaction brazing. Contact reaction brazing utilizes the characteristic that certain dissimilar metals can form a eutectic. Under conditions of good interfacial contact reaction and heating to a temperature higher than the eutectic temperature, a eutectic reaction liquid metal layer is formed at the interface through interdiffusion between metal atoms, followed by condensation and crystallization, thereby connecting the metals. It can be seen that when using contact reaction brazing, a "self-soldering" brazing technology can be achieved by relying on the liquid phase alloy generated by the eutectic reaction between the materials to achieve the connection.

[0058] In this embodiment, the electrode post 10 and the sealing element can be eutectic bonded into a single unit. Eutectic bonding here refers to the formation of a eutectic liquid phase between the electrode post 10 and the sealing element 20, thereby creating a eutectic bonding interface and a robust composite structure. For example, the electrode post 10 can be made of copper, and the sealing element 20 can be made of ceramic; a eutectic interface can be formed between the copper post and the ceramic. Therefore, eutectic bonding provides excellent sealing performance. The eutectic bonding between the electrode post 10 and the sealing element 20 can be achieved through processes such as brazing.

[0059] Furthermore, the electrode 10 and the seal 20 are bonded through a eutectic process, eliminating the need for a solder layer between them. This not only reduces assembly time but also reduces the use of raw materials, resulting in significant cost savings. Additionally, reducing the solder layer, such as solder pads, lowers the risk of brazing voids.

[0060] In this embodiment, the electrode terminal 100 includes a pole post 10 and a sealing element 20. The pole post 10 and the sealing element 20 are bonded together as a single unit through eutectic bonding, which not only improves the airtightness of the electrode terminal 100, but also enhances the bonding strength between the pole post 10 and the sealing element 20.

[0061] Optionally, the seal 20 can be eutecticly bonded to the pillar 11 and / or the wing 12, that is, the seal 20 can be eutecticly bonded to at least one of the pillar 11 and the wing 12. When the seal 20 is eutecticly bonded to the pillar 11, the sealing performance between the seal 20 and the pillar 11 can be enhanced. When the seal 20 is eutecticly bonded to the wing 12, the sealing performance between the seal 20 and the wing 12 can be enhanced. When the seal 20 is eutecticly bonded to both the pillar 11 and the wing 12 simultaneously, sealing performance at more locations between the seal 20 and the pole post 10 can be guaranteed.

[0062] According to one embodiment of the present invention, a first oxide layer is provided at the brazing location on the electrode post 10 where it is connected to the sealing element 20. Optionally, before eutectic bonding, the electrode post 10 includes a first oxide layer obtained through pre-oxidation. Forming the first oxide layer facilitates the formation of a eutectic liquid phase. For example, the electrode post 10 is pre-oxidized in a high-temperature environment. When the electrode post 10 is made of copper, it can be placed in an environment of 700°C to 800°C for thermal oxidation. In this embodiment, before eutectic bonding, the electrode post 10 includes a first oxide layer obtained through pre-oxidation. Forming the first oxide layer facilitates the formation of a eutectic liquid phase. For another example, if the electrode post 10 is made of copper, after oxidation, copper-oxygen eutectic wetting bonding can be achieved.

[0063] According to one embodiment of the present invention, before eutectic bonding, the cover plate connector 30 includes a second oxide layer obtained through pre-oxidation. Similarly, forming the second oxide layer also facilitates the formation of a eutectic liquid phase. For example, the cover plate connector 30 is placed in a high-temperature environment for pre-oxidation treatment. When the cover plate connector 30 is a copper ring, the copper ring can be placed in an environment of 700°C to 800°C for thermal oxidation treatment. In this embodiment, forming the second oxide layer also facilitates the formation of a eutectic liquid phase.

[0064] Optionally, the pole post 10 or the cover plate connector 30 can be subjected to thermal oxidation treatment, which can improve the appearance and oxidation level while ensuring the bonding strength.

[0065] It should be noted that before eutectic bonding, both the electrode post 10, including the first oxide layer obtained through pre-oxidation, and the cover plate connector 30, including the second oxide layer obtained through pre-oxidation, can be achieved through thermal oxidation treatment. Furthermore, pre-oxidation treatment can improve the appearance and oxidation level while ensuring the bonding strength of the two materials. In addition, whether between the electrode post 10 and the seal 20, or between the cover plate connector 30 and the seal 20, eutectic bonding through brazing can replace the riveting process of existing technologies, thereby increasing the structural strength of the product. Moreover, brazing provides good sealing performance, improving the airtightness of the sample and reducing the use of gaskets and sealants in existing technologies.

[0066] According to one embodiment of this utility model, the sealing element 20 is a ceramic ring. The ceramic ring can be a metallized ceramic ring or a non-metallized ceramic ring, as long as it can form a eutectic interface with the electrode post, it falls within the protection scope of this utility model. For example, a white ceramic ring can be used as the sealing element 20 and fitted around the outer periphery of the electrode post 10. It should be noted that when the sealing element 20 is made of an insulating material, such as a ceramic ring, the sealing element 20 not only has a sealing effect but also an insulating effect.

[0067] When a non-metallic ceramic ring is used as the sealing element 20, a cover plate connector 30 can be provided on the lower end face of the non-metallic ceramic ring. It should be noted that the non-metallization of the ceramic ring reduces the risk of brazing voids.

[0068] When using a metallized ceramic ring, the cover plate connector 30 is unnecessary, and the metallized ceramic ring can be directly welded to the metal. Screen printing and other processes can be used to prepare the metallized ceramic ring.

[0069] According to one embodiment of the present invention, electrode terminal 100 is a negative terminal, post 10 is a copper post, sealing element 20 is a white ceramic ring, and metal plating layer 40 is a nickel layer.

[0070] The electrode terminal 100 according to the present invention will be described in detail below with reference to specific embodiments.

[0071] Example

[0072] (1) Thermal oxidation of copper pillars and copper rings.

[0073] (2) Assemble (1) and alumina ceramic in the fixture in the order of copper ring → white porcelain ring → copper column.

[0074] (4) Brazing the jig assembled in (3).

[0075] (5) Place the sample obtained in (4) into the plating tank for electroless nickel plating.

[0076] Comparative Example 1

[0077] The nickel cap is installed on the upper end of the copper pillar using brazing filler metal, and a ceramic ring is fitted around the outer circumference of the copper pillar.

[0078] Comparative Example 2

[0079] Prepare rivets, gaskets, and sealant. During fabrication, use a resistance welding gun to quickly melt one end of the rivet, connect it to the gasket and sealant, and then allow it to solidify rapidly.

[0080] The products of the above embodiments and comparative examples were tested as follows:

[0081] First, airtightness test

[0082] The airtightness test was conducted using a helium mass spectrometer (helium spray method).

[0083] During testing, the sample to be tested is placed in the fixture, which is then connected and locked to the detection port of the helium mass spectrometer, ensuring there are no gaps. The inner chamber of the helium mass spectrometer is evacuated, and once the vacuum level reaches a specific value, helium gas is injected into the connection point. If the instrument detects a helium reaction, it indicates that the sample's airtightness is unsatisfactory and there is a significant gap.

[0084] After testing

[0085] The test result for Example 1 is: 1.55*10 -9 pa*m 3 / s;

[0086] The test result for Comparative Example 1 is: 7.65*10 -8 pa*m 3 / s.

[0087] The test result for Comparative Example 2 was: NG.

[0088] The airtightness test results show that the product of Example 1 has better airtightness, while the products of Comparative Example 1 and Comparative Example 2 have poor airtightness.

[0089] Second, welding tensile test

[0090] The welding tensile test shall be conducted in accordance with GB / T13477.12-2006 to test the joint strength.

[0091] The test results of Example 1 were: ceramic tearing and cracking.

[0092] The test results for Comparative Example 1 were: solder layer detachment, ceramic cracking, and copper pillar breakage.

[0093] The test results for Comparative Example 2 show that the rivet structure was damaged.

[0094] The welding tensile test results show that the bonding strength between the ceramic ring and the copper pillar in Example 1 is greater than that in Comparative Example 1 and Comparative Example 2.

[0095] As can be seen, the electrode terminals of this embodiment have advantages such as high structural strength, good airtightness, and good conductivity and stability.

[0096] This utility model also provides a battery cover assembly, which includes a cover plate, a positive terminal, and a negative terminal. Specifically, the cover plate has mounting holes, and the positive or negative terminal is mounted in the mounting holes. The positive and / or negative terminal is the electrode terminal 100 of any of the above embodiments. Since the electrode terminal 100 of this utility model embodiment uses a metal plating layer 40, it has advantages such as cost saving, good airtightness, and high bonding strength. Therefore, the battery cover assembly of this utility model embodiment also has the same advantages, which will not be elaborated here.

[0097] This utility model also provides a battery, which includes the battery cover assembly of any of the above embodiments. Since the battery cover assembly of this utility model has advantages such as cost savings, good airtightness, and high bonding strength, the battery pack of this utility model also has the same advantages and good safety performance, which will not be elaborated upon here.

[0098] This utility model also provides an electrical device that includes the battery of any of the above embodiments. Since the battery of this utility model has advantages such as good safety performance, the electrical device of this utility model also has the same advantages, which will not be elaborated here. Furthermore, the electrical device of this utility model can be, but is not limited to, a vehicle.

[0099] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electrode terminal (100), characterized in that: include: Pole (10); A sealing member (20), the sealing member (20) being an annular member having a channel, and the sealing member (20) being arranged around the outer circumference of the pole (10); A metal coating (40) covers at least one end of the pole (10) in the axial direction of the pole (10) so as to be electrically connected to an external electrical device.

2. The electrode terminal (100) according to claim 1, characterized in that: Also includes: A cover plate connector (30), the cover plate connector (30) being arranged on the sealing member (20), the cover plate connector (30) and the pole (10) being respectively connected to different positions of the sealing member (20), and the cover plate connector (30) being used for connecting to the cover plate.

3. The electrode terminal (100) according to claim 2, characterized in that: The sealing component (20) and the cover plate connecting component (30) are brazed into one body.

4. The electrode terminal (100) according to claim 2 or 3, characterized in that: The cover plate connecting piece (30) and the pole (10) are metal pieces made of the same material.

5. The electrode terminal (100) according to claim 2, characterized in that: The metal plating layer (40) simultaneously covers the cover plate connecting piece (30).

6. The electrode terminal (100) according to claim 1 or 5, wherein the metal plating layer (40) simultaneously covers the outer surface of the sealing member (20).

7. The electrode terminal (100) according to claim 1, characterized in that: The pole (10) comprises: A column (11), wherein the sealing member (20) is sleeved on the column (11); A wing portion (12), the wing portion (12) being arranged at one end of the column (11) in the axial direction, and the outer edge of the wing portion (12) protruding beyond the outer side surface of the column (11); Wherein, the sealing element (20) is connected to the column (11) and / or the wing (12).

8. The electrode terminal (100) according to claim 1 or 7, characterized in that: The pole (10) and the sealing member (20) are brazed into one body.

9. The electrode terminal (100) according to claim 8, characterized in that: An oxide layer is provided at a portion of the pole (10) that is brazed with the sealing member (20).

10. The electrode terminal (100) according to claim 1, characterized in that: The electrode terminal (100) is a negative electrode terminal, the pole (10) is a copper pole, the sealing member (20) is a white porcelain ring, and the metal plating layer (40) is a nickel layer.

11. A battery cover assembly, characterized in that: include: A cover plate, wherein a mounting hole is provided on the cover plate; A positive terminal and a negative terminal, the positive terminal or the negative terminal is installed in the installation hole, the positive terminal is the electrode terminal (100) according to any one of claims 1-9, and / or the negative terminal is the electrode terminal (100) according to any one of claims 1-10.

12. A battery, characterized in that: Includes the battery cover assembly as described in claim 11.

13. An electrical equipment, characterized in that: Comprising the battery as claimed in claim 12.

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