Cover plate assembly, battery, battery device and electric equipment thereof

Abstract

The utility model discloses a cover plate assembly, a battery, a battery device and electric equipment thereof. The cover plate assembly comprises a cover plate, a first conductive piece and a pole. A first through hole is formed in the cover plate. The first conductive piece is conductively connected with the cover plate and arranged on one side of the cover plate in the thickness direction. One end of the pole penetrates through the first through hole and is conductively connected with the first conductive piece to lead out an electrode, and the pole is suitable for being electrically connected with a battery cell of the battery. According to the cover plate assembly disclosed by the utility model, the pole is arranged in the first through hole in the cover plate in a penetrating manner and is conductively connected with the first conductive piece to lead out the electrode, so that conduction of current among the first conductive piece, the pole and the battery core of the battery can be realized, the mounting process of the cover plate assembly is simplified, and the assembly efficiency of the cover plate assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a cover plate assembly, a battery, a battery device and an electric device using the same. Background Art

[0002] In the related art, a battery cover plate is connected to the opening of the battery housing, so as to jointly define a sealed accommodation cavity by the housing and the battery cover plate for installing the battery cell. Among them, in order to realize the electrical connection between the battery and other components, a pole post is provided through the battery cover plate, and a lead-out piece and a lead-out block are respectively connected to both ends of the pole post. During the actual installation process, it is necessary to insulate the cover plate and the lead-out block. However, the installation process has many installation steps, which reduces the assembly efficiency. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. To this end, the first object of the utility model is to provide a cover plate assembly, which simplifies the installation process of the cover plate assembly and improves the assembly efficiency of the cover plate assembly.

[0004] The second object of the utility model is to provide a battery using the above cover plate assembly.

[0005] The third object of the utility model is to provide a battery device using the above cover plate assembly and / or battery.

[0006] The fourth object of the utility model is to provide an electric device using the above battery device.

[0007] The cover plate assembly according to the first aspect embodiment of the utility model includes: a cover plate, a first through hole is formed on the cover plate; a first conductive member, the first conductive member is arranged on one side of the cover plate in the thickness direction, a second through hole is formed on the first conductive member, and the second through hole is opposite to the first through hole; a pole post, the pole post is arranged through the first through hole and the second through hole, and the pole post is adapted to be electrically connected to the battery cell of the battery.

[0008] According to the cover plate assembly of the embodiment of the utility model, by arranging the pole post through the first through hole on the cover plate and electrically connecting it with the first conductive member to lead out the electrode, the conduction of current between the first conductive member, the pole post and the battery cell can be realized, which simplifies the installation process of the cover plate assembly and improves the assembly efficiency of the cover plate assembly.

[0009] According to some embodiments of the utility model, a second through hole is formed on the first conductive member, the second through hole is opposite to the first through hole, and one end of the pole post is arranged through the first through hole and the second through hole.

[0010] According to some embodiments of the present utility model, a first step portion is provided on the inner wall of the second through hole, and the first step portion extends in a direction towards the center of the second through hole; the pole column includes a first pole column segment and a second pole column segment connected to each other, the cross-sectional area of the first pole column segment is larger than that of the second pole column segment, the first pole column segment and a part of the second pole column segment are located in the second through hole, and the first pole column segment abuts against the first step portion.

[0011] According to some embodiments of the present utility model, the cover plate assembly further includes a second conductive member, and the second conductive member is provided on the other side in the thickness direction of the cover plate, and the second conductive member is adapted to be electrically connected to the battery cell.

[0012] According to some embodiments of the present utility model, the cover plate assembly further includes an insulating member, and the insulating member is provided between the cover plate and the second conductive member. The pole column passes through the first conductive member, the cover plate and the insulating member, and the other end of the pole column is connected to the second conductive member.

[0013] According to some embodiments of the present utility model, the second conductive member is riveted to the pole column; or the second conductive member and the pole column are integrally formed.

[0014] According to some embodiments of the present utility model, the cover plate assembly further includes a sealing member, and the sealing member is sleeved on the pole column, and the sealing member abuts between the inner wall of the first through hole and the outer wall of the pole column.

[0015] According to some embodiments of the present utility model, the first through hole includes a first hole segment and a second hole segment that communicate with each other, and the aperture of the first hole segment is larger than that of the second hole segment; the sealing member includes a first sealing segment and a second sealing segment connected to each other, the cross-sectional area of the first sealing segment is larger than that of the second sealing segment, the first sealing segment is fitted in the first hole segment, and the second sealing segment is fitted in the second hole segment.

[0016] According to some embodiments of the present utility model, a plurality of limiting members are provided on the cover plate, and the plurality of limiting members are spaced apart along the circumferential direction of the first conductive member, and each limiting member abuts against the outer wall of the first conductive member.

[0017] According to some embodiments of the present utility model, the first conductive member includes a first conductive segment and a second conductive segment connected to each other, the second conductive segment is located between the first conductive segment and the cover plate, the cross-sectional area of the second conductive segment is larger than that of the first conductive segment, and the outer wall of the second conductive segment abuts against the limiting member.

[0018] According to some embodiments of the present utility model, the cover plate includes a body on which the first through hole is formed; and a side beam that surrounds the circumferential edge of the body and extends in the direction of the first conductive member in the thickness direction of the cover plate.

[0019] According to some embodiments of the present utility model, the cover plate further includes: a bent section provided on a side of the side beam away from the body, the bent section extending in a direction away from the center of the body, and the bent section being adapted to abut against the housing of the battery.

[0020] According to some embodiments of the present utility model, in the thickness direction of the cover plate, the thickness of the bent section is D1, where D1 satisfies: 0.2 mm ≤ D1 ≤ 0.5 mm.

[0021] According to some embodiments of the present utility model, the thickness of the cover plate is D2, where D2 satisfies: 0.5 mm ≤ D2 ≤ 0.8 mm.

[0022] According to some embodiments of the present utility model, the pole column is a copper pole column, and the first conductive member is an aluminum conductive member.

[0023] According to some embodiments of the present utility model, the cover plate is a steel cover plate.

[0024] According to the battery of the second aspect embodiment of the present utility model, it includes: a housing in which a receiving cavity is formed, a battery cell is installed in the receiving cavity, and an opening communicating with the receiving cavity is formed on the housing; a cover plate assembly provided at the opening, the pole column is electrically connected to the battery cell, and the cover plate assembly is the cover plate assembly according to the first aspect embodiment of the present utility model.

[0025] According to the battery device of the third aspect embodiment of the present utility model, it includes the battery according to the second aspect embodiment of the present utility model.

[0026] According to the electrical equipment of the fourth aspect embodiment of the present utility model, it includes the battery device according to the third aspect embodiment of the present utility model or the battery according to the second aspect embodiment of the present utility model.

[0027] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0028] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0029] Figure 1Explosion diagram of the cover plate assembly according to an embodiment of the present utility model;

[0030] Figure 2 Cross-sectional view of the cover plate assembly according to an embodiment of the present utility model;

[0031] Figure 3 is Figure 2 Enlarged view of part A circled in;

[0032] Figure 4 Cross-sectional view of the cover plate assembly from another angle according to an embodiment of the present utility model;

[0033] Figure 5 Cross-sectional view of the cover plate assembly according to another embodiment of the present utility model;

[0034] Figure 6 Schematic diagram of the negative electrode side of the battery according to an embodiment of the present utility model;

[0035] Figure 7 Schematic diagram of the positive electrode side of the battery according to an embodiment of the present utility model.

[0036] Reference numerals:

[0037] 100: Cover plate assembly;

[0038] 1: Cover plate; 11: First through hole; 111: First hole section; 112: Second hole section; 12: Body; 13: Side beam; 14: Bending section; 2: First conductive member; 21: Second through hole; 211: First step portion; 22: First conductive section; 23: Second conductive section; 3: Pole column; 31: First pole column section; 32: Second pole column section; 4: Second conductive member; 5: Insulating member; 6: Sealing member; 61: First sealing section; 62: Second sealing section; 7: Limiting member;

[0039] 200: Battery;

[0040] 201: Housing. Detailed implementation manners

[0041] Next, refer to Figures 1-7 to describe the cover plate assembly 100 according to the embodiment of the first aspect of the present utility model.

[0042] As Figures 1-7 shown, the cover plate assembly 100 according to the embodiment of the first aspect of the present utility model includes a cover plate 1, a first conductive member 2, and a pole column 3.

[0043] Specifically, a first through hole 11 is formed in the cover plate 1. The first conductive member 2 is electrically connected to the cover plate 1 and is disposed on one side in the thickness direction of the cover plate 1. One end of the pole column 3 is inserted into the first through hole 11 and is electrically connected to the first conductive member 2 to lead out an electrode, and the pole column 3 is adapted to be electrically connected to the battery cell of the battery 200.

[0044] For example, in Figures 1-5 's example, the first conductive member 2 and the cover plate 1 can be in direct contact or bonded by a conductive adhesive to achieve electrical connection. However, it is not limited thereto. The first through hole 11 is formed through in the thickness direction of the cover plate 1 to facilitate the pole column 3 to be inserted into the first through hole 11, increasing the connection stability of the pole column 3 on the cover plate 1. At the same time, the pole column 3 can be electrically connected to both the first conductive member 2 and the battery cell of the battery 200, enabling current to be conducted between the first conductive member 2, the pole column 3, and the battery cell of the battery 200, which is beneficial to the normal use of the cover plate assembly 100 on the battery 200. Thus, the connection method of the cover plate assembly 100 is simplified, the assembly efficiency of the cover plate assembly 100 is improved, and at the same time, the function of conducting the current of the battery cell of the battery 200 by the cover plate assembly 100 is satisfied, which is beneficial to the application of the cover plate assembly 100 on the battery 200.

[0045] According to the cover plate assembly 100 of the embodiment of the present invention, by inserting the pole column 3 into the first through hole 11 on the cover plate 1 and electrically connecting it to the first conductive member 2 to lead out an electrode, the conduction of current between the first conductive member 2, the pole column 3, and the battery cell of the battery 200 can be achieved, simplifying the installation process of the cover plate assembly 100 and improving the assembly efficiency of the cover plate assembly 100.

[0046] According to some embodiments of the present invention, referring to Figures 1-5 , a second through hole 21 is formed in the first conductive member 2. The second through hole 21 is opposite to the first through hole 11, and one end of the pole column 3 is inserted into the first through hole 11 and the second through hole 21. The second through hole 21 of the first conductive member 2 corresponds to the first through hole 11 on the cover plate 1 to facilitate the pole column 3 to be inserted into the first through hole 11 and the second through hole 21, thereby using the pole column 3 to connect the cover plate 1 and the first conductive member 2 and increasing the connection stability between the cover plate 1 and the first conductive member 2.

[0047] Furthermore, referring to Figures 1-5, on the inner wall of the second through hole 21, there is a first stepped portion 211, and the first stepped portion 211 extends in the direction towards the center of the second through hole 21. The pole column 3 includes a first pole column section 31 and a second pole column section 32 that are connected to each other. The cross-sectional area of the first pole column section 31 is larger than that of the second pole column section 32. The first pole column section 31 and a part of the second pole column section 32 are located in the second through hole 21, and the first pole column section 31 abuts against the first stepped portion 211. With such a setting, the position of the pole column 3 in the second through hole 21 is limited by the abutting fit between the first pole column section 31 and the first stepped portion 211, thereby preventing the pole column 3 from moving excessively towards the cover plate 1 and improving the connection stability and reliability between the cover plate 1 and the first conductive member 2.

[0048] According to some embodiments of the present invention, as Figures 1-5 shown, the cover plate assembly 100 further includes a second conductive member 4. The second conductive member 4 is provided on the other side in the thickness direction of the cover plate 1, and the second conductive member 4 is adapted to be electrically connected to the battery cell. Along the thickness direction of the cover plate 1, the first conductive member 2, the cover plate 1, and the second conductive section 23 are arranged in sequence. The pole column 3 is adapted to be electrically connected to the second conductive member 4, and through the electrical connection between the second conductive member 4 and the battery cell, the electrical connection between the pole column 3 and the battery cell can be realized.

[0049] In addition, the cover plate assembly 100 further includes an insulating member 5. The insulating member 5 is provided between the cover plate 1 and the second conductive member 4. The pole column 3 passes through the first conductive member 2, the cover plate 1, and the insulating member 5, and the other end of the pole column 3 is connected to the second conductive member 4. Thus, the connection stability between the pole column 3 and the second conductive member 4 is increased, and at the same time, the insulating member 5 is used to space apart the second conductive section 23 and the cover plate 1, avoiding the galvanic corrosion of the second conductive member 4 and the cover plate 1 under the immersion of the electrolyte of the battery cell, thereby improving the use safety of the cover plate assembly 100 and extending the service life of the cover plate assembly 100.

[0050] Among them, the insulating member 5 can be a polypropylene member or a polyethylene terephthalate member. But it is not limited thereto.

[0051] Furthermore, referring to Figures 2-5 , the second conductive member 4 is riveted to the pole column 3; or the second conductive member 4 and the pole column 3 are integrally formed. Among them, the second conductive member 4 is riveted to the pole column 3, the operation is simple, the processes such as laser welding are reduced, which is beneficial to reducing the manufacturing cost of the cover plate assembly 100, and at the same time is beneficial to increasing the connection reliability between the second conductive member 4 and the pole column 3. The second conductive member 4 and the pole column 3 are integrally formed, effectively reducing the components of the cover plate assembly 100, increasing the integrity of the cover plate assembly 100, and improving the use stability of the cover plate assembly 100.

[0052] According to some embodiments of the present invention, as Figures 1-5As shown, the cover plate assembly 100 further includes a seal 6. The seal 6 is sleeved on the pole column 3, and the seal 6 abuts between the inner wall of the first through hole 11 and the outer wall of the pole column 3. With such a setting, it is beneficial to increase the sealing performance between the inner wall of the first through hole 11 and the outer wall of the pole column 3 through the seal 6, to prevent the electrolyte of the battery cell, etc. from flowing along the gap between the inner wall of the first through hole 11 and the outer wall of the pole column 3, or to prevent external water vapor, etc. from flowing along the gap between the inner wall of the first through hole 11 and the outer wall of the pole column 3, thereby improving the sealing performance of the cover plate assembly 100 during use and enhancing the safety of the cover plate assembly 100 during use.

[0053] Further, referring to Figure 3 , the first through hole 11 includes a first hole section 111 and a second hole section 112 that communicate with each other, and the aperture of the first hole section 111 is larger than the aperture of the second hole section 112. The seal 6 includes a first seal section 61 and a second seal section 62 that are connected to each other. The cross-sectional area of the first seal section 61 is larger than the cross-sectional area of the second seal section 62. The first seal section 61 is fitted in the first hole section 111, and the second seal section 62 is fitted in the second hole section 112. Thereby, the fitting area between the seal 6 and the inner wall of the first through hole 11 is increased, the sealing performance between the inner wall of the first through hole 11 and the outer wall of the pole column 3 is improved, and at the same time, the seal 6 is limited in position to prevent the seal 6 from moving excessively away from the first conductive member 2 along the thickness direction of the cover plate 1, so as to increase the installation stability of the cover plate assembly 100.

[0054] According to some embodiments of the present invention, a plurality of limiting members 7 are provided on the cover plate 1. The plurality of limiting members 7 are spaced apart along the circumferential direction of the first conductive member 2, and each limiting member 7 abuts against the outer wall of the first conductive member 2. In the description of the present invention, "a plurality of" means two or more. For example, in Figure 1 , Figure 2 and Figure 5 's example, two limiting members 7 are provided on the cover plate 1, and the two limiting members 7 are opposite to each other in the length direction of the cover plate 1. During the installation of the cover plate assembly 100, the two limiting members 7 respectively abut against the opposite outer walls of the first conductive member 2, thereby limiting the movement of the first conductive member 2 in the length direction of the cover plate 1 and increasing the connection stability between the first conductive section 22 and the cover plate 1.

[0055] In addition, the plurality of limiting members 7 are spaced apart along the circumferential direction of the first conductive member 2, and the movement of the first conductive member 2 in the circumferential direction can be limited by the plurality of limiting members 7.

[0056] Further, as Figure 1As shown, the first conductive member 2 includes a first conductive section 22 and a second conductive section 23 connected to each other. The second conductive section 23 is located between the first conductive section 22 and the cover plate 1. The cross-sectional area of the second conductive section 23 is larger than that of the first conductive section 22, and the outer wall of the second conductive section 23 abuts against the limiting member 7. The larger cross-sectional area of the second conductive section 23 enables the second conductive section 23 to be adapted to cooperate with the limiting member 7 to realize the limitation of the first conductive member 2. The smaller cross-sectional area of the first conductive section 22 is beneficial to the lightweight design of the first conductive member 2, reduces the cost of the first conductive member 2, and at the same time facilitates the user to apply force to move the first conductive member 2 to make the second conductive section 23 of the first conductive member 2 abut against the limiting member 7 in a mating manner.

[0057] According to some embodiments of the present invention, referring to Figure 1 and Figure 4 , the cover plate 1 includes a main body 12 and a side beam 13. A first through hole 11 is formed in the main body 12. The side beam 13 surrounds the circumferential edge of the main body 12 and extends in the direction of the first conductive member 2 in the thickness direction of the cover plate 1. Thus, when the cover plate assembly 100 is connected to the housing 201 of the battery 200, the main body 12 and the side beam 13 can all extend into the housing 201, and the side beam 13 can abut against the inner wall of the housing 201 to increase the contact area between the cover plate 1 and the housing 201 and improve the connection stability of the cover plate 1 on the housing 201. At the same time, the side beam 13 extends in the direction of the first conductive member 2, which is beneficial to forming a protection for the first conductive member 2 to improve the electrical connection stability of the cover plate assembly 100 and extend the service life of the cover plate assembly 100.

[0058] Furthermore, the cover plate 1 further includes a bending section 14. The bending section 14 is provided on the side of the side beam 13 away from the main body 12 and extends in the direction away from the center of the main body 12. The bending section 14 is adapted to abut against the housing 201 of the battery 200. Thus, when the cover plate assembly 100 is connected to the housing 201 of the battery 200, the main body 12 and the side beam 13 can all extend into the housing 201, while the bending section 14 abuts against the housing 201, preventing the cover plate 1 from extending excessively into the housing 201 and interfering with or colliding and damaging the other components inside the housing 201, so as to improve the electrical connection stability of the cover plate assembly 100 and extend the service life of the cover plate assembly 100.

[0059] Furthermore, referring to Figure 4, in the thickness direction of the cover plate 1, the thickness of the bent section 14 is D1, where D1 satisfies: 0.2 mm ≤ D1 ≤ 0.5 mm. When D1 < 0.2 mm, the thickness of the bent section 14 in the thickness direction of the cover plate 1 is small, and the structural strength of the bent section 14 is small, thus reducing the service life of the cover plate assembly 100; when D1 > 0.5 mm, the thickness of the bent section 14 in the thickness direction of the cover plate 1 is large. While the structural strength of the bent section 14 meets the use requirements, the mass of the cover plate 1 is increased, which is not conducive to the lightweight design of the cover plate assembly 100. Therefore, by setting the thickness of the bent section 14 in the thickness direction of the cover plate 1 to 0.2 mm ≤ D1 ≤ 0.5 mm, the structural strength of the cover plate assembly 100 meets the use requirements, extends the service life of the cover plate assembly 100, and is conducive to the lightweight design of the cover plate 1.

[0060] In addition, referring to Figure 4 , the thickness of the cover plate 1 is D2, where D2 satisfies: 0.5 mm ≤ D2 ≤ 0.8 mm. When D2 < 0.5 mm, the thickness of the cover plate 1 is small, and the structural strength of the cover plate 1 is small, reducing the connection stability between the first conductive member 2 and the cover plate 1 and reducing the service life of the cover plate assembly 100; when D2 > 0.8 mm, the thickness of the cover plate 1 is large. While the structural strength of the cover plate 1 meets the use requirements, increasing the thickness of the cover plate 1 requires an increase in the length of the terminal post 3, increasing the cost of the terminal post 3 and being not conducive to the lightweight design of the cover plate assembly 100. Therefore, by setting the thickness of the cover plate 1 to 0.5 mm ≤ D2 ≤ 0.8 mm, the structural strength of the cover plate 1 meets the use requirements, extends the service life of the cover plate assembly 100, and makes the mass and volume of the cover plate assembly 100 more reasonable, reducing the cost of the cover plate assembly 100.

[0061] In some alternative embodiments, the terminal post 3 is a copper terminal post and the first conductive member 2 is an aluminum conductive member. Among them, the copper terminal post has excellent electrical conductivity, corrosion resistance and mechanical strength. Using the copper terminal post as the terminal post 3 is conducive to reducing the cost of the terminal post 3. At the same time, compared with the copper-aluminum composite terminal post 3, it is conducive to reducing the risk of the terminal post 3 melting when passing a large current, and extending the service life of the terminal post 3.

[0062] The aluminum conductive member has excellent electrical conductivity, workability and heat dissipation. Therefore, using the aluminum conductive member as the first conductive member 2 improves the electrical conductivity of the first conductive member 2 and reduces the cost of the first conductive member 2 at the same time.

[0063] The cooperation of the copper terminal post and the aluminum conductive member makes full use of the complementary characteristics of the two materials of copper and aluminum, further optimizing the electrical connection efficiency between the terminal post 3 and the first conductive member 2 and reducing the cost of the cover plate assembly 100.

[0064] In some alternative embodiments, the cover plate 1 is a steel cover plate. Among them, the steel cover plate has the advantages of high strength, good toughness, corrosion resistance, high temperature resistance, and easy processing. Using the steel cover plate as the cover plate 1 is beneficial to reducing the weight of the cover plate 1, and is conducive to the stamping forming of the cover plate 1, reducing the production difficulty. In addition, using the steel cover plate as the cover plate 1 has good electrical conductivity, which helps to quickly and effectively conduct current to the ground, and is beneficial to improving the operation safety of the battery 200.

[0065] Optionally, the cover plate 1 can be an SPCC (Steel Plate Cold Commercial, that is, cold-rolled commercial steel plate) nickel-plated plate, a SUS304 (Steel Use Stainless, that is, the stainless steel used, and 304 refers to the specific grade of the stainless steel) plate, or a SUS316L plate. However, it is not limited thereto.

[0066] According to the battery 200 of the second aspect embodiment of the present invention, referring to Figures 6-7 , it includes: a housing 201, an accommodation cavity is formed in the housing 201, an electric core is installed in the accommodation cavity, and an opening communicating with the accommodation cavity is formed on the housing 201; a cover plate assembly 100, the cover plate assembly 100 is arranged at the opening, the pole column 3 is electrically connected to the electric core, and the cover plate assembly 100 is the cover plate assembly 100 according to the first aspect embodiment of the present invention above.

[0067] Among them, cover plate assemblies 100 can be provided at both opposite ends of the housing 201, so that the positive electrode and the negative electrode of the electric core in the housing 201 are respectively electrically connected to the cover plate assemblies 100 at both ends of the housing 201. Among them, an insulating member 5 may not be provided between the pole column 3 and the cover plate 1 in any of the cover plate assemblies 100 corresponding to the positive electrode and the negative electrode of the electric core, so as to avoid the simultaneous appearance of negative electricity and positive electricity on the housing 201. Preferably, in order to avoid electrochemical corrosion of the cover plate assembly 100 corresponding to the positive electrode of the electric core, an insulating member 5 is provided between the cover plate 1 corresponding to the positive electrode of the electric core and the pole column 3, while an insulating member 5 is not provided between the cover plate 1 corresponding to the negative electrode of the electric core and the pole column 3, even if the housing 201 can carry negative electricity. Thus, the use of the insulating member 5 of the battery 200 is reduced, the cost of the battery 200 is reduced, the volume of the battery 200 is reduced, and the applicability of the battery 200 is improved.

[0068] According to the battery 200 of the embodiment of the present invention, by adopting the above cover plate assembly 100, it is beneficial to improve the assembly efficiency of the battery 200, increase the installation stability of the battery 200 and the use stability of the battery 200, and extend the service life of the battery 200.

[0069] According to the battery device of the third aspect embodiment of the present invention, it includes the battery 200 according to the second aspect embodiment of the present invention above. Among them, the battery device can be a battery pack or a battery cluster. However, it is not limited thereto.

[0070] According to an embodiment of the present utility model, for a battery device (not shown in the figure), by adopting the above-mentioned battery 200, it is beneficial to increase the stability of the power output of the battery device, thereby enhancing the market competitiveness of the battery device.

[0071] An electrical device (not shown in the figure) according to a fourth aspect embodiment of the present utility model includes the battery device according to the third aspect embodiment of the present utility model above or the battery according to the second aspect embodiment of the present utility model above. Among them, the electrical device can be an automobile, an aircraft, or a computer. However, it is not limited thereto.

[0072] For the electrical device according to an embodiment of the present utility model, by adopting the above-mentioned battery device, it is beneficial to increase the operating stability of the electrical device, thereby enhancing the user experience of using the electrical device.

[0073] For other components and operations of the battery 200, the battery device, and the electrical device according to the embodiments of the present utility model, those are known to those of ordinary skill in the art and will not be described in detail here.

[0074] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "rear", "inner", "outer", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0075] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0076] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0077] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover plate assembly, characterized in that: include: A cover plate, wherein a first through hole is formed on the cover plate; a first conductive member, the first conductive member being conductively connected to the cover plate and disposed on one side of the cover plate in a thickness direction; A pole, one end of which is inserted into the first through hole and is conductively connected to the first conductive member to lead out an electrode, and the pole is suitable for being electrically connected to a battery cell of a battery.

2. The cover plate assembly according to claim 1, characterized in that: A second through hole is formed on the first conductive member, the second through hole is opposite to the first through hole, and the one end of the pole is inserted into the first through hole and the second through hole.

3. The cover plate assembly according to claim 2, characterized in that: The inner wall of the second through hole is provided with a first step portion, and the first step portion extends in a direction toward the center of the second through hole; The pole includes a first pole segment and a second pole segment connected to each other, the cross-sectional area of ​​the first pole segment is larger than the cross-sectional area of ​​the second pole segment, the first pole segment and part of the second pole segment are located in the second through hole, and the first pole segment abuts against the first step portion.

4. The cover plate assembly according to claim 1, characterized in that: Also includes: A second conductive member, wherein the second conductive member is disposed on the other side of the cover plate in the thickness direction, and the second conductive member is suitable for being electrically connected to the battery cell.

5. The cover plate assembly according to claim 4, characterized in that: Also includes: An insulating member is provided between the cover plate and the second conductive member, the pole passes through the first conductive member, the cover plate and the insulating member, and the other end of the pole is connected to the second conductive member.

6. The cover plate assembly according to claim 4, characterized in that: The second conductive member is riveted to the pole; or The second conductive member and the pole are integrally formed.

7. The cover plate assembly according to claim 1, characterized in that: Also includes: A sealing member is sleeved on the pole and abuts between the inner wall of the first through hole and the outer wall of the pole.

8. The cover plate assembly according to claim 7, characterized in that: The first through hole comprises a first hole segment and a second hole segment which are connected to each other, and the hole diameter of the first hole segment is larger than the hole diameter of the second hole segment; The sealing member includes a first sealing segment and a second sealing segment connected to each other, the cross-sectional area of ​​the first sealing segment is larger than the cross-sectional area of ​​the second sealing segment, the first sealing segment is fitted in the first hole segment, and the second sealing segment is fitted in the second hole segment.

9. The cover plate assembly according to any one of claims 1 to 8, characterized in that: The cover plate is provided with a plurality of limit members, which are spaced apart along the circumference of the first conductive member, and each of the limit members abuts against an outer wall of the first conductive member.

10. The cover plate assembly according to claim 9, characterized in that: The first conductive member includes a first conductive segment and a second conductive segment connected to each other, the second conductive segment is located between the first conductive segment and the cover plate, the cross-sectional area of ​​the second conductive segment is larger than the cross-sectional area of ​​the first conductive segment, and the outer wall of the second conductive segment abuts against the limiting member.

11. The cover plate assembly according to any one of claims 1 to 8, characterized in that: The cover plate comprises: a body, wherein the first through hole is formed on the body; The side beam is arranged on the circumferential edge of the body, and the side beam extends in the thickness direction of the cover plate toward the first conductive member.

12. The cover plate assembly according to claim 11, characterized in that: The cover plate also includes: A bending section is arranged on a side of the side beam away from the main body, the bending section extends in a direction away from the center of the main body, and the bending section is suitable for abutting against the shell of the battery.

13. The cover plate assembly according to claim 12, characterized in that: The thickness of the bent section in the thickness direction of the cover plate is D1, wherein D1 satisfies: 0.2 mm ≤ D1 ≤ 0.5 mm.

14. The cover plate assembly according to any one of claims 1 to 8, characterized in that: The thickness of the cover plate is D2, wherein D2 satisfies: 0.5 mm ≤ D2 ≤ 0.8 mm.

15. The cover plate assembly according to any one of claims 1 to 8, characterized in that: The pole is a copper pole, and the first conductive member is an aluminum conductive member.

16. The cover plate assembly according to any one of claims 1 to 8, characterized in that: The cover plate is a steel cover plate.

17. A battery, characterized in that: include: A housing, wherein a housing cavity is formed in the housing, a battery cell is installed in the housing cavity, and an opening communicating with the housing cavity is formed on the housing; A cover plate assembly, wherein the cover plate assembly is arranged at the opening, the pole is electrically connected to the battery cell, and the cover plate assembly is a cover plate assembly according to any one of claims 1-16.

18. A battery device, characterized in that: Comprising a battery according to claim 17.

19. An electrical equipment, characterized in that: Comprising the battery device according to claim 18 or the battery according to claim 17.

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