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 first solder layer is positioned between the sealing element and the post terminal, so that the sealing element is connected with the post terminal. The first solder layer of the electrode terminal can connect the sealing element with the pole in a welding manner, so that the sealing element is connected with the pole, and the bonding strength and the air tightness between the sealing element and the pole are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and specifically relates to an electrode terminal, a battery cover assembly, a battery and an electrical device. Background Art

[0002] The electrode terminal of the prior art usually adopts a pole and a sealing ring. During assembly, the sealing ring is directly sleeved on the outer periphery of the pole to complete the assembly of the sealing ring and the pole, which has technical problems such as poor bonding strength and poor airtightness. Utility Model Content

[0003] One object of the utility model is to provide a new technical solution for an electrode terminal, which can solve at least one technical problem of poor bonding strength and poor air tightness caused by the electrode terminal of the prior art directly sleeved the sealing ring on the outer periphery of the pole.

[0004] Another object of the present utility model is to provide a new technical solution for a battery cover assembly, wherein the battery cover assembly includes the above-mentioned electrode terminal.

[0005] Another object of the utility model is to provide a new technical solution for a battery, wherein the battery includes the above-mentioned battery cover assembly.

[0006] Another object of the utility model is to provide a new technical solution for an electrical device, wherein the electrical device comprises the above-mentioned battery.

[0007] According to a first aspect of the utility model, an electrode terminal is provided, comprising: a pole; a sealing member, which is an annular member having a channel and is arranged around the outer periphery of the pole; and a first solder layer, which is located between the sealing member and the pole to connect the sealing member to the pole.

[0008] Optionally, the first solder layer is screen-printed on the sealing component or the first solder layer is a solder sheet.

[0009] Optionally, the electrode terminal further comprises: a cover plate connector, the cover plate connector is arranged on the sealing member, the cover plate connector and the pole are respectively connected to different positions of the sealing member, and the cover plate connector is used to connect to the cover plate.

[0010] Optionally, the cover plate connector is connected to one end of the sealing member in the axial direction of the channel.

[0011] Optionally, the electrode terminal further comprises: a second solder layer, wherein in the axial direction along the channel, the second solder layer is located between one end of the sealing member and the cover plate connector to connect the cover plate connector to the sealing member.

[0012] Optionally, the second solder layer is screen-printed on the sealing component or the second solder layer is a solder sheet.

[0013] Optionally, a portion of the sealing member corresponding to the cover plate connector has a metallization layer.

[0014] Optionally, the sealing component is a non-metallic component.

[0015] Optionally, the seal is ceramic.

[0016] Optionally, the pole includes: a column, on which the seal is sleeved; a wing, which is arranged at one end of the column along its own axial direction, and the outer edge of the wing exceeds the outer edge of the column; wherein the first solder layer is provided between the seal and the column and / or the wing.

[0017] Optionally, the electrode terminal further comprises: a cap, which is arranged at one end of the pole along its own axial direction, and the cap is used to be electrically connected to an external electrical device.

[0018] Optionally, the cap includes: a first metal layer, one side of which is connected to the pole in the axial direction of the pole, and the first metal layer and the pole are made of the same metal; a second metal layer, which is arranged on the other side of the first metal layer in the axial direction of the pole, the second metal layer and the first metal layer are made of different metals, and are used to be electrically connected to external electrical equipment.

[0019] Optionally, the electrode terminal further comprises: a third solder layer, wherein the third solder layer is disposed between the cap and the pole, so that the cap is connected to the pole through the third solder layer.

[0020] According to the second aspect of the utility model, a battery cover plate assembly is provided, comprising: a cover plate, on which a mounting hole is provided; a positive terminal and a negative terminal, the positive terminal or the negative terminal being mounted in the mounting hole, and the positive terminal and / or the negative terminal being any of the electrode terminals described above.

[0021] According to a third aspect of the utility model, a battery is provided, comprising any one of the above-mentioned battery cover plate assemblies.

[0022] According to a fourth aspect of the utility model, there is provided an electrical device comprising any of the above-mentioned batteries.

[0023] In the electrode terminal of the utility model, the first solder layer can connect the seal and the pole together by welding, thereby achieving connection between the seal and the pole, and improving the bonding strength and air tightness between the seal and the pole.

[0024] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0026] Figure 1 An exploded view of an electrode terminal provided in one embodiment of the utility model;

[0027] Figure 2 An assembly diagram of an electrode terminal provided for another embodiment of the utility model;

[0028] Figure 3 An assembly diagram of an electrode terminal provided for yet another embodiment of the utility model.

[0029] Reference numerals:

[0030] Electrode terminal 100;

[0031] Pole 10; column 11; wing 12;

[0032] Seal 20; channel 21; metallization layer 22;

[0033] A first solder layer 30;

[0034] A second solder layer 40;

[0035] Cap 50; first metal layer 51; second metal layer 52;

[0036] A third solder layer 60;

[0037] Cover plate connector 70. DETAILED DESCRIPTION

[0038] 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 arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0039] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0040] 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 as part of the specification.

[0041] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0042] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] The electrode terminal 100 according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] like Figures 1 to 3 As shown, the electrode terminal 100 according to the embodiment of the present invention includes a pole 10 , a sealing member 20 and a first solder layer 30 .

[0045] Specifically, the seal 20 is an annular member having a channel 21 . The seal 20 is disposed around the outer circumference of the pole 10 . The first solder layer 30 is located between the seal 20 and the pole 10 to connect the seal 20 to the pole 10 .

[0046] In other words, the electrode terminal 100 according to the embodiment of the present invention is mainly composed of a pole 10 , a seal 20 and a first solder layer 30 , wherein the seal 20 is an annular member having a channel 21 , and one end of the pole 10 extends into the channel 21 of the seal 20 .

[0047] That is, the seal 20 can be sleeved on the outside of at least a portion of the pole 10, which can expand the sealing range of the pole 10. In addition, by adopting the annular seal 20, it is also beneficial to improve the assembly efficiency between the seal 20 and the pole 10. For example, when the electrode terminal 100 is installed in the mounting hole of the cover of the battery, at least a portion of the seal 20 can be sandwiched between the outer surface of the pole 10 and the inner wall surface of the mounting hole, achieving a sealing effect.

[0048] In addition, the first solder layer 30 can connect the seal 20 and the pole 10 together by welding, thereby achieving connection between the seal 20 and the pole 10 and improving the bonding strength and airtightness between the seal 20 and the pole 10 .

[0049] In this embodiment, by arranging the first solder layer 30 between the seal 20 and the pole 10, the first solder layer 30 can connect the seal 20 and the pole 10 together by welding, thereby achieving the connection between the seal 20 and the pole 10 and improving the bonding strength and airtightness between the seal 20 and the pole 10.

[0050] According to one embodiment of the utility model, the first solder layer 30 is screen-printed on the seal 20 or the first solder layer 30 is a welding sheet. Wherein, when a welding sheet is used, for example, the silver-copper solder is punched into a welding sheet, the process complexity of silk-screen printing is reduced and the efficiency is improved. When silk-screen printing is used, for example, the seal 20 is a ceramic ring with a non-metallized design on the upper side, and the pole 10 is a copper column. Silver-copper solder is screen-printed on the upper side of the ceramic ring to achieve welding of the copper column. During production, one side of the ceramic ring can be screen-printed first, and then the materials can be assembled, and then brazing and sintering can be carried out in a sintering furnace with a low oxygen atmosphere to prepare a sample.

[0051] In this embodiment, on the one hand, when silk screen printing is used, not only can a reliable connection between the seal 20 and the pole 10 be achieved, but also the influence of the solder on the overall shape and size of the electrode terminal 100 can be reduced. On the other hand, when a layered solder sheet is used, it is beneficial to simplify the process, the uniformity of the distribution of the solder and the aesthetic appearance of the finished product. For example, stamping the silver-free solder into a layered solder sheet reduces the complexity of the silk screen process and improves efficiency.

[0052] According to one embodiment of the utility model, the electrode terminal further includes a cover plate connector 70, which is disposed on the seal 20, and the cover plate connector 70 and the pole 10 are respectively connected to different positions of the seal 20, and the cover plate connector 70 is used to connect to the cover plate. In other words, the cover plate connector 70 can play a transition role, for example, the cover plate connector 70 is covered on the lower end of the seal 20, and the cover plate connector 70 can be connected to the cover plate of the battery, and because the upper surface of the cover plate connector 70 is connected to the lower end of the seal 20, the assembly between the seal 20 and the cover plate can be realized, reducing the difficulty of directly connecting the seal 20 to the cover plate.

[0053] In some specific embodiments of the present invention, the cover plate connector 70 is connected to one end of the sealing member 20 in the axial direction of the channel 21, and the cover plate connector 70 is used to connect to the cover plate. For example, the channel of the sealing member 70 extends in the up-down direction, and the cover plate connector 70 is connected to the lower end of the sealing member 20 in the up-down direction. In this embodiment, by arranging the cover plate connector 70 at one end of the sealing member 20 in the extending direction of the channel 21, it is helpful to reduce the difficulty of direct connection between the cover plate connector 70 and the sealing member 20.

[0054] Optionally, the cover plate connector 70 may be made of metal to facilitate connection with the cover plate through a welding process.

[0055] According to one embodiment of the utility model, the electrode terminal 100 further includes a second solder layer 40, and in the axial direction along the channel 21, the second solder layer 40 is located between one end of the sealing member 20 and the cover plate connector 70, so that the cover plate connector 70 is connected to the sealing member 20. For example, the second solder layer 40 is screen-printed on the sealing member 20, and the sealing member 20 is connected to the cover plate connector 70 through the second solder layer 40. In this embodiment, the difficulty of connecting the sealing member 20 and the cover plate connector 70 together is reduced by providing the second solder layer 40, and the bonding strength of the subsequent battery packaging is improved.

[0056] In some specific embodiments of the present invention, the second solder layer 40 is screen-printed on the seal 20 or the second solder layer 40 is a welding sheet. Among them, when the silk-screen printing process is adopted, for example, the seal 20 adopts a white porcelain ring with an overall non-metallized design, and the solder is screen-printed at the lower end of the white porcelain ring, and then the nickel ring is connected for subsequent battery packaging and joining. During production, the two sides of the white porcelain ring can be screen-printed first, and then the materials are assembled, and then brazing and sintering are carried out in a sintering furnace without hydrogen to prepare the sample. It can be seen that hydrogen does not need to be introduced during the entire brazing process, which further reduces the cost expenditure, reduces the difficulty of the process, and also reduces the risk of accidental combustion. When a welding sheet is used, it is convenient to simplify the process.

[0057] According to an embodiment of the present invention, the portion of the seal 20 corresponding to the cover plate connector 70 has a metallized layer 22. For example, a metal layer is provided on the lower side of the seal 20, for example, by metallization treatment, so as to facilitate simultaneous connection with the pole 10 and the cover plate connector 70. For example, the lower side of the seal 20 is provided with a metallized layer for subsequent battery packaging and bonding.

[0058] In some specific embodiments of the present invention, the seal 20 is a non-metallic part. A first solder layer 30 can be directly screen-printed on one side of the seal 20, which can not only achieve a reliable connection between the non-metallic area of ​​the seal 20 and the metal pole 10, but also reduce the influence of the solder on the overall shape and size of the electrode terminal 100. In addition, at least a portion of the ceramic ring is not metallized to reduce the risk of brazing voids. It should be noted that when the seal 20 is made of an insulating material, such as a ceramic ring, the seal 20 can not only have a sealing effect, but also an insulating effect.

[0059] According to an embodiment of the present invention, the sealing member 20 is made of ceramic, which can save costs. For example, the sealing member 20 is a non-metallized ceramic ring.

[0060] In addition, when a non-metallized ceramic ring is used, the non-metallization of the ceramic ring can reduce the risk of brazing voids; when a partially metallized ceramic is used, it is convenient for subsequent connection with other parts, such as connection with the cover of the battery, etc. Moreover, when the seal 20 is a non-metallized ceramic ring as a whole, the cost can be further reduced.

[0061] For example, the seal 20 is a ceramic ring with a metallized design on the lower side, and the pole 10 is a copper column. Silver-free solder is silk-screened on the upper side of the ceramic ring to achieve welding of the copper column. During production and processing, one side of the ceramic ring to be welded with the copper column can be silk-screened first, and then the materials can be assembled, and then brazing and sintering can be performed in a nitrogen atmosphere to prepare the sample. For another example, the seal 20 is a non-metallized ceramic ring as a whole, such as a white magnetic ring, and the upper side of the white porcelain ring is silk-screened with silver-free solder, and the upper side of the white porcelain ring is welded with a copper column. During production, there is no need to introduce hydrogen during the brazing process, which can reduce cost expenditure, reduce the difficulty of the process, and also reduce the risk of accidental combustion.

[0062] In some specific embodiments of the utility model, the pole 10 includes a column 11 and a wing 12, a seal 20 is sleeved on the column 11, the wing 12 is arranged at one end of the column 11 along its own axial direction, and the outer edge of the wing 12 exceeds the outer edge of the column 11; wherein a first solder layer 30 is provided between the seal 20 and the column 11 and / or the wing 12.

[0063] That is to say, the pole 10 includes a column body 11 and a wing 12, the outer edge of the wing 12 exceeds the outer edge of the column body 11, and the seal 20 is arranged on the outer side of the column body 11. Among them, the column body 11 is a cylindrical part, along the axial direction of the column body 11, the wing 12 is arranged at one end of the column body 11, and the first side of the seal 20 is close to the wing 12. For example, the column body 11 extends in the up and down direction, the wing 12 is arranged at the upper end of the column body 11, and the seal 20 is an annular part, and the annular seal 20 can be sleeved on the outer periphery of the column body 11. Optionally, a first solder layer 30 is silk-screened on the upper end surface of the seal 20. Optionally, a first solder layer 30 is arranged on the inner wall surface of the seal 20.

[0064] In this embodiment, a first solder layer 30 is provided between the seal 20 and the column 11, which is beneficial to expand the connection area and improve the bonding strength. The first solder layer 30 is provided between the seal 20 and the wing 12, for example, by screen printing the first solder layer 30 on the side of the seal 20 close to the wing 12, which is beneficial to the implementation of the welding process and improves the efficiency of assembling the seal 20 and the pole 10. In addition, in this embodiment, whether the column 11 or the wing 12 is connected to the seal 20, it is beneficial to improve the airtightness. In addition, by providing the wing 12, it is also convenient to limit the seal 20 and increase the contact area between it and the seal 20.

[0065] Optionally, the pole 10 is an integrated piece, which is easy to process and manufacture.

[0066] In some specific embodiments of the utility model, the electrode terminal 100 further includes a cap 50, which is disposed at one end of the pole 10 along its own axial direction, and the cap 50 is used to be electrically connected to an external electrical device. That is, the electrode terminal 100 further includes a cap 50, which is connected to one end of the pole 10, and the cap 50 is a metal part. Among them, the cap 50 can be used to be electrically connected to an external electrical device, for example, the pole 10 is a copper pole, and the cap 50 is a nickel cap. For another example, the cap 50 is a composite material part in which a nickel cap and an aluminum cap are stacked, wherein the nickel cap can be connected to an external electrical device through the aluminum cap. In other words, by providing the cap 50, it is helpful to draw out the current of the pole 10.

[0067] According to one embodiment of the utility model, Figure 3 As shown, the cap 50 includes a first metal layer 51 and a second metal layer 52. In the axial direction of the pole 10, one side of the first metal layer 51 is connected to the pole 10, and the first metal layer 51 and the pole 10 are the same metal. In the axial direction of the pole 10, the second metal layer 52 is arranged on the other side of the first metal layer 51. The second metal layer 52 and the first metal layer 51 are different metals and are used to be electrically connected to external electrical equipment. For example, the pole 10 uses a copper column, and the cap 50 uses a copper-nickel alloy cap. One end of the copper-nickel alloy cap close to the pole 10 is also made of copper, and the other end is made of nickel, that is, the first metal layer 51 is a copper layer, and the second metal layer 52 is a nickel layer. The copper layer and the copper column are easy to connect and have strong reliability. When the first metal layer 51 and the pole 10 are made of copper respectively, the first metal layer 51 and the pole 10 can be joined by a brazing process. In addition, the use of a copper-nickel alloy cap and a copper column for brazing is conducive to achieving a low resistance of the battery pack, reducing energy consumption, and increasing battery life. It can be seen that when the first metal layer 51 of the same material is connected to the pole 10, the bonding strength can be improved and the process difficulty can be reduced. In this embodiment, the cap 50 includes the first metal layer 51 and the second metal layer 52, which is convenient for reducing the difficulty of directly connecting the second metal layer 52 and the pole 10.

[0068] Optionally, the cap 50 is an integrated piece to facilitate processing and manufacturing and reduce process complexity.

[0069] In some specific embodiments of the utility model, the electrode terminal 100 further includes a third solder layer 60, which is disposed between the cap 50 and the pole 10, so that the cap 50 is connected to the pole 10 through the third solder layer 60. In other words, the difficulty of connection between the pole 10 and the cap 50 can be reduced by the third solder layer 60, which is conducive to the implementation of the welding process. For example, the copper column can be welded to the nickel cap by silver-free solder. By using the nickel cap to braze the copper column, the resistance of the battery pack can be reduced, the energy consumption can be reduced, and the battery life can be increased.

[0070] Optionally, brazing is performed in a nitrogen atmosphere to ensure that the appearance of the electrode terminal is not oxidized.

[0071] Optionally, nickel cap treatment is performed after sintering is completed to avoid physical gaps between the nickel cap and the copper column, resulting in brazing voids and unqualified airtightness.

[0072] In addition, in the embodiment of the utility model, brazing process can be used for welding. The brazing process can make the welding strength between the raw materials higher, so that the electrode terminal 100 has higher structural strength and better sealing performance, thereby improving the safety performance of the sample.

[0073] The electrode terminal 100 according to the embodiment of the utility model is described in detail below in conjunction with specific implementations.

[0074] Example 1

[0075] The electrode terminal 100 may be manufactured according to the following steps:

[0076] (1) The upper surface of the ceramic ring is screen-printed with silver-free solder, and the lower surface is metallized.

[0077] (2) The assembly sequence is as follows: ceramic ring → copper column → silver-free solder sheet → nickel cap, and the jig is assembled.

[0078] (3) Braze the assembled jig.

[0079] (4) The sample brazed in step (3) is subjected to nickel cap pressing treatment and then to anti-oxidation treatment.

[0080] Example 2

[0081] (1) The upper and lower surfaces of the white porcelain ring are screen-printed with silver-free solder.

[0082] (2) The assembly sequence is nickel ring → white porcelain ring → copper column → silver-free solder sheet → nickel cap, and the jig is assembled.

[0083] (3) Braze the assembled fixture.

[0084] (4) The brazed samples were subjected to anti-oxidation treatment.

[0085] Example 3

[0086] (1) Screen printing silver-copper solder on one side of the semi-metallized ceramic ring;

[0087] (2) The jig is assembled in the following order: semi-metallized ceramic ring → copper column → silver-copper solder sheet → nickel cap;

[0088] (3) Brazing the assembled fixture;

[0089] (4) The brazed samples were subjected to anti-oxidation treatment.

[0090] Comparative Example 1

[0091] The upper end of the copper column is connected with a nickel cap through silver-copper solder, and a ceramic ring is sleeved on the copper column.

[0092] Comparative Example 2

[0093] The sealing ring, the welding copper ring and the pole are integrally injection molded.

[0094] The following tests are performed on the products of the above-mentioned Example 1, Example 2, Example 3 and Comparative Example 1 and Comparative Example 2 respectively:

[0095] First, air tightness test

[0096] Tested using a helium mass spectrometer (helium spray method)

[0097] Place the sample to be tested in the tooling, connect the tooling to the detection port of the helium mass spectrometer and lock it to ensure that there is no gap. Evacuate the inner tank of the helium mass spectrometer, and when the vacuum reaches a specific value, spray helium into the connection. If the instrument detects a helium reaction, it means that the sample is not airtight and there is a large gap.

[0098] After testing, the following test results were obtained:

[0099] The test result of Example 1 is: 3.54*10 -9 pa*m 3 / s;

[0100] The test result of Example 2 is: 6.39*10 -9 pa*m 3 / s;

[0101] The test result of Example 3 is: 5.46*10 -9 pa*m 3 / s;

[0102] The test result of comparative example 1 is: 4.33*10 -8 pa*m3 / s;

[0103] The test result of comparative example 2 is: 9.87*10 -9 pa*m 3 / s.

[0104] Comparing the test results of each embodiment and each comparative example, the air tightness of the product of the embodiment is better, while the air tightness of the product of the comparative example is poor.

[0105] Second, tensile performance test

[0106] GB / T13477.12-2006 is used to test the bonding strength.

[0107] The test results are as follows:

[0108] The test results of Example 1 are: 4516N;

[0109] The test result of Example 2 is: 4232N;

[0110] The test result of Example 3 is: 4742N;

[0111] The test results of comparative example 1 are: 3789N;

[0112] The test result of comparative example 2 is: 783N.

[0113] By comparing the test results of each embodiment and each comparative example, it can be seen that the structural strength of the product of the embodiment is greater than the structural strength of the product of the comparative example.

[0114] The utility model also provides a battery cover assembly, which includes a cover, a positive terminal and a negative terminal. Specifically, the cover is provided with a mounting hole, and the positive terminal or the negative terminal is mounted in the mounting hole, and the positive terminal and / or the negative terminal is the electrode terminal 100 of any of the above embodiments. Since the electrode terminal 100 of the embodiment of the utility model has the advantages of good air tightness and high structural strength, the battery cover assembly of the embodiment of the utility model also has the same advantages, which will not be described in detail here.

[0115] The utility model also provides a battery, which includes a battery cover assembly of any of the above embodiments. Since the battery cover assembly of the utility model embodiment has advantages such as good airtightness, the battery pack of the utility model embodiment also has the same advantages and good safety performance, which will not be described in detail here.

[0116] The utility model also provides an electric device, which includes a battery of any of the above embodiments. Since the battery of the utility model embodiment has advantages such as good safety performance, the electric device of the utility model embodiment also has the same advantages, which will not be described in detail. In addition, the electric device of the utility model embodiment can be but is not limited to a vehicle.

[0117] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified 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 (21), and the sealing member (20) being arranged around the outer circumference of the pole (10); A first solder layer (30) is located between the sealing member (20) and the pole (10) so as to connect the sealing member (20) to the pole (10).

2. The electrode terminal (100) according to claim 1, characterized in that: The first solder layer (30) is screen-printed on the sealing component (20) or the first solder layer (30) is a solder sheet.

3. The electrode terminal (100) according to claim 1, characterized in that: Also includes: A cover plate connector (70), the cover plate connector (70) being arranged on the sealing member (20), the cover plate connector (70) and the pole (10) being respectively connected to different positions of the sealing member (20), and the cover plate connector (70) being used for connecting to the cover plate.

4. The electrode terminal (100) according to claim 3, characterized in that: In the axial direction of the channel (21), the cover plate connecting member (70) is connected to one end of the sealing member (20).

5. The electrode terminal (100) according to claim 4, characterized in that: Also includes: A second solder layer (40) is located between one end of the sealing member (20) and the cover plate connecting member (70) in the axial direction along the channel (21) so as to connect the cover plate connecting member (70) to the sealing member (20).

6. The electrode terminal (100) according to claim 5, characterized in that: The second solder layer (40) is screen-printed on the sealing component (20) or the second solder layer (40) is a solder sheet.

7. The electrode terminal (100) according to claim 4, characterized in that: A portion of the sealing member (20) corresponding to the cover plate connecting member (70) is provided with a metallized layer (22).

8. The electrode terminal (100) according to any one of claims 1 to 7, characterized in that: The sealing component (20) is a non-metallic component.

9. The electrode terminal (100) according to claim 8, characterized in that: The sealing element (20) is made of ceramic.

10. 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), wherein the wing portion (12) is arranged at one end of the column (11) along its own axial direction, and the outer edge of the wing portion (12) exceeds the outer edge of the column (11); Wherein, the first solder layer (30) is provided between the sealing member (20) and the column (11) and / or the wing portion (12).

11. The electrode terminal (100) according to claim 1 or 10, characterized in that: Also includes: A cap (50) is arranged at one end of the pole (10) along its own axial direction, and the cap (50) is used to be electrically connected to external electrical equipment.

12. The electrode terminal (100) according to claim 11, characterized in that: The cap (50) comprises: A first metal layer (51), one side of the first metal layer (51) is connected to the pole (10) in the axial direction of the pole (10), and the first metal layer (51) and the pole (10) are made of the same metal; A second metal layer (52) is provided on the other side of the first metal layer (51) in the axial direction of the pole (10); the second metal layer (52) and the first metal layer (51) are made of different metals and are used for electrical connection with external electrical equipment.

13. The electrode terminal (100) according to claim 11, characterized in that: Also includes: A third solder layer (60) is provided between the cap (50) and the pole (10), so that the cap (50) is connected to the pole (10) through the third solder layer (60).

14. 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, and the positive terminal and / or the negative terminal is an electrode terminal (100) according to any one of claims 1 to 13.

15. A battery, characterized in that: Includes the battery cover assembly as described in claim 14.

16. An electrical equipment, characterized in that: Comprising the battery of claim 15.

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