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

Abstract

The utility model discloses a cover plate assembly, a single battery, a battery device and electric equipment, and the cover plate assembly comprises an electrode column, a locking piece and a conductive plate; the electrode column comprises a first conductive section, the first conductive section abuts against one side of the conductive plate, and the locking piece is fixedly connected with the first conductive section and the conductive plate so that the electrode column can be fixedly connected with the conductive plate. The two ends of the locking piece are embedded in the conductive plate and the first conductive section respectively, so that the electrode column and the conductive plate are fixed, welding is not needed, and assembling is simple.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a cover plate assembly, a single cell, a battery device and an electrical device. Background Art

[0002] In the current battery cover assembly, the aluminum block and the electrode column are fixed together by welding, which increases the difficulty of manufacturing the cover assembly. Utility Model Content

[0003] The purpose of the present application is to provide a new technical solution for a cover plate assembly, a single cell, a battery device and an electrical device to solve the above-mentioned problems, avoid welding and fixing of the aluminum block and the electrode column, and reduce the manufacturing difficulty of the cover plate assembly.

[0004] A first aspect of the present application provides a cover plate assembly, comprising an electrode column, a locking member and a conductive plate; the electrode column comprises a first conductive segment, the first conductive segment abuts against one side of the conductive plate, and the locking member is fixedly connected to the first conductive segment and the conductive plate respectively, so that the electrode column is fixedly connected to the conductive plate.

[0005] In some embodiments, the locking member includes a clamping portion and an expansion portion that are fixedly connected, the clamping portion is at least partially embedded in the conductive plate, and the expansion portion extends into the first conductive segment and expands in a direction away from the center of the locking member.

[0006] In some embodiments, the expansion portion includes a plurality of piercing members, and the plurality of piercing members are circumferentially arranged at one end of the clamping portion; any one of the piercing members is at least partially located in the first conductive segment, and the end of the piercing member that is away from the clamping portion expands in a direction away from the center of the locking member; the clamping portion is embedded in the conductive plate.

[0007] In some embodiments, the locking member includes a locking head and a first clamping portion that are fixedly connected, and a second clamping portion is provided on the side of the first conductive segment facing the conductive plate; the locking head abuts against the conductive plate, and the first clamping portion passes through the conductive plate and engages with the second clamping portion.

[0008] In some embodiments, the electrode column is made of copper or aluminum.

[0009] In some embodiments, the cover plate assembly further includes an insulating pad and a cover plate; the conductive plate, the insulating pad and the cover plate are stacked in sequence; the first conductive segment passes through the cover plate and the insulating pad and abuts against the conductive plate.

[0010] In some embodiments, the cover plate assembly further includes a seal; the electrode column further includes a flange, the flange fixedly connected to an end of the first conductive segment facing away from the conductive plate; the seal is located between the flange and the cover plate, and the seal is in a compressed state.

[0011] In some embodiments, a mounting groove is provided on a side of the conductive plate facing the cover plate, and the first conductive segment presses against a bottom wall surface of the mounting groove.

[0012] In some embodiments, the seal has a preset compression amount, and the depth of the mounting groove is equal to the preset compression amount.

[0013] In some embodiments, a gap exists between a side wall surface of the mounting groove and a side wall surface of the first conductive segment.

[0014] In some embodiments, a portion of the seal extends between the first conductive segment and the through hole of the cover plate.

[0015] In some embodiments, the insulating pad is provided with a first limiting groove on one side facing the conductive plate, the bottom wall of the first limiting groove is provided with a through hole, the first conductive segment passes through the through hole and cooperates with the locking member, and the conductive plate is located in the first limiting groove.

[0016] In some embodiments, a venting groove is disposed on the bottom wall of the first limiting groove, and one end of the venting groove is connected to the through hole.

[0017] In some embodiments, the cover plate assembly also includes stacked spacers and lead-out plates; the electrode column also includes a second conductive segment, which is connected to the side of the flange away from the first conductive segment; the spacer and the lead-out plate are both sleeved on the second conductive segment, and the side of the spacer away from the lead-out plate is attached to the cover plate, and the lead-out plate is fixedly connected to the second conductive segment.

[0018] In some embodiments, a process hole is provided on a side of the second conductive segment facing away from the flange.

[0019] A second aspect of the present application provides a single cell, comprising a cover plate assembly as described in any one of the above items and a shell having an opening, wherein the cover plate assembly covers the opening.

[0020] A third aspect of the present application provides a battery device, comprising a box and the single battery as described above, wherein the single battery is arranged in the box.

[0021] A fourth aspect of the present application provides an electrical device, comprising the single cell battery described above, or the battery device described above.

[0022] The cover plate assembly of the present application includes an electrode column, a locking member and a conductive plate; the electrode column includes a first conductive segment, the first conductive segment abuts against one side of the conductive plate, and the locking member is fixedly connected to the first conductive segment and the conductive plate respectively, so that the electrode column is fixedly connected to the conductive plate.

[0023] In the present application, the two ends pressed by the locking member are respectively embedded in the conductive plate and the first conductive segment, thereby fixing the electrode column and the conductive plate without welding, and the assembly is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation scheme are briefly introduced below.

[0025] Figure 1 It is a schematic diagram of the split structure of the cover plate assembly provided in an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the cover plate assembly provided in an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the split structure of a single cell provided in an embodiment of the present application.

[0028] Figure 4 It is a schematic diagram of the overall structure of the insulating pad in the cover assembly provided in an embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the cross-sectional structure of the conductive plate provided in an embodiment of the present application.

[0030] Figure 6 It is a schematic diagram of the cross-sectional structure of the cover plate assembly provided in an embodiment of the present application.

[0031] Figure 7 It is a schematic diagram of the assembly of the cover plate assembly provided in an embodiment of the present application.

[0032] Explanation of the reference numerals: 1000-cover assembly, 100-electrode column; 110-first conductive segment; 120-flange; 130-second conductive segment; 140-process hole; 200-locking piece; 210-clamping portion; 220-expansion portion; 300-conductive plate; 310-installation groove; 400-insulating pad; 410-first limiting groove; 420-through hole; 430-exhaust groove; 500-cover; 510-second limiting groove; 600-seal; 700-spacer; 710-lead-out piece; 800-first mold; 810-second mold; 900-gap; 2000-single battery, 2100-housing, 2101-accommodating cavity, 2102-opening, 2200-battery cell, 2201-ear. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0034] Please refer to Figure 1 and Figure 2 The embodiment of the present application provides a cover plate assembly 1000, which includes an electrode column 100, a locking member 200, and a conductive plate 300, an insulating pad 400, a cover plate 500, a sealing member 600, a spacer 700, and a lead-out piece 710 stacked in sequence. The conductive plate 300, the insulating pad 400, the cover plate 500, the spacer 700, and the lead-out piece 710 can all be rectangular plates.

[0035] In this embodiment, the electrode column 100 includes a first conductive segment 110, and the first conductive segment 110 abuts against one side of the conductive plate 300. The locking member 200 is fixedly connected to the first conductive segment 110 and the conductive plate 300, respectively, so that the electrode column 100 is fixedly connected to the conductive plate 300, that is, the two ends of the locking member 200 are respectively fixed to the conductive plate 300 and the first conductive segment 110 of the electrode column 100, so that the electrode column 100 and the conductive plate 300 are fixed. Furthermore, by abutting the first conductive segment 110 against one side of the conductive plate 300, the conductivity between the electrode column 100 and the conductive plate 300 can be ensured. It can be seen that in the present embodiment, the conventional welding method for fixing the electrode column 100 and the conductive plate 300 is abandoned. Instead, the first conductive segment 110 of the electrode column 100 and the conductive plate 300 are respectively fixed by the locking member 200, thereby achieving fixation of the electrode column 100 and the conductive plate 300. In this way, during the assembly process of the cover assembly, the welding process can be omitted, thereby increasing the convenience of assembling the cover assembly.

[0036] Specifically, the locking member 200 includes a clamping portion 210 and an expansion portion 220 that are fixedly connected. The clamping portion 210 is at least partially embedded in the conductive plate 300. The expansion portion 220 extends into the first conductive segment 110 and expands in a direction away from the center of the locking member 200. In the embodiment of the present application, the conductive plate 300 is a whole plate. In the process of fixing the conductive plate 300 and the electrode column 100, the expansion portion 220 of the locking member 200 first pierces the conductive plate 300 and then further extends into the first conductive segment 110 of the electrode column 100. In this process, the clamping portion 210 enters the piercing hole formed by the expansion portion 220 on the conductive plate 300, so that the clamping portion 210 is clamped with the conductive plate 300, thereby achieving the fixing of the clamping portion 210 and the conductive plate 300. Furthermore, when the expansion portion 220 extends into the first conductive segment 110, due to the effect of force, the expansion portion 220 will expand in a direction extending into the first conductive segment 110 and away from the center of the locking member 200, thereby forming a mutually engaging mechanical interlocking structure between the expansion portion 220 and the first conductive segment 110, thereby fixing the expansion portion 220 and the first conductive segment 110.

[0037] Further, to facilitate the fixation of the expansion part 220 and the first conductive segment 110, in some embodiments, the expansion part 220 includes a plurality of puncture members, and the plurality of puncture members are circumferentially arranged at one end of the clamping part 210; during the locking process of the locking part 200, the plurality of puncture members pierce the conductive plate 300 and extend into the first conductive segment 110, the clamping part 210 is embedded in the conductive plate 300, and the plurality of puncture members can expand in a direction away from the center of the locking part 200, so that the locking part 200 is fixed to the conductive plate 300. It can be understood by those skilled in the art that the puncture member can be a thin sheet structure such as a triangle or a quadrilateral, so as to facilitate the puncture of the conductive plate 300.

[0038] The electrode column 100 also includes a flange, which is fixedly connected to the end of the first conductive segment 110 that faces away from the conductive plate 300; the first conductive segment 110 and the flange 120 are coaxial, the first conductive segment 110 passes through the seal 600, the cover plate 500 and the insulating gasket 400, and abuts against the conductive plate; the flange 120 presses the side of the seal 600 that faces away from the cover plate 500; the seal 600 is in a compressed state.

[0039] The electrode column 100 further includes a second conductive segment 130, which is fixedly connected to the side of the flange 120 away from the first conductive segment 110, and the second conductive segment 130, the flange 120 and the first conductive segment 110 are coaxial. The spacer 700 and the lead-out piece 710 are both sleeved on the second conductive segment 130, and the side of the spacer 700 away from the lead-out piece 710 is attached to the cover plate 500, and the lead-out piece 710 is fixedly connected to the second conductive segment 130. It can be understood by those skilled in the art that the lead-out piece 710 and the second conductive segment 130 can be fixed by welding.

[0040] The present application also provides an embodiment of fixing the conductive plate 300 and the electrode column 100 with a locking member 200. In this embodiment, the locking member 200 includes a locking head and a first clamping portion that are fixedly connected. The first conductive segment 110 is provided with a second clamping portion on the side facing the conductive plate 300; the locking head abuts against the conductive plate 300, and the first clamping portion passes through the conductive plate 300 and is engaged with the second clamping portion. Specifically, the first clamping portion may be a protrusion, and the second clamping portion may be a slot. The protrusion is inserted into the slot to form a buckle structure, thereby completing the fixing of the conductive plate 300 and the electrode column 100. In addition, the buckle structure is a common locking structure in the art, and will not be described in detail in the embodiment of the present application. Of course, those skilled in the art can also understand that the first clamping portion may also be a slot, and the second clamping portion may be a protrusion. Specifically, those skilled in the art can set it as needed, and the embodiment of the present application does not make specific restrictions. Obviously, in this embodiment, a through hole can be opened on the conductive plate 300 to facilitate the first clamping portion to pass through the conductive plate 300, and the locking head can abut against the side wall of the through hole. Of course, those skilled in the art can also understand that the locking head can also be pressed against the side of the conductive plate 300 away from the first conductive segment 110.

[0041] The present application also provides an embodiment of fixing the conductive plate 300 and the electrode column 100 with a locking member 200. In this embodiment, the locking member 200 includes a locking head and a threaded rod that are fixedly connected. A threaded hole is provided at one end of the first conductive segment 110 facing the conductive plate 300. The threaded rod passes through the conductive plate 300 and is screwed to the threaded hole. The locking head is pressed against the side of the conductive plate 300 away from the first conductive segment 110, thereby fixing the conductive plate 300 and the electrode column 100. Of course, those skilled in the art can understand that in this embodiment, a through hole can be provided on the conductive plate 300 so that the threaded rod passes through the conductive plate 300 and is screwed to the threaded hole.

[0042] Please refer to Figure 3The cover plate assembly 1000 is applied to a single cell 2000. The single cell 2000 may be a blade battery. The single cell 2000 includes a shell 2100 and a battery cell 2200. The shell 2100 is provided with a receiving cavity 2101. The battery cell 2200 includes a pole ear 2201. The battery cell 2200 is installed inside the receiving cavity 2101, and the pole ear 2201 of the battery cell 2200 is fixedly connected with the lead-out sheet 710, so that the electric energy of the battery cell 2200 is transmitted to the electrode column 100 through the pole ear 2201 and the lead-out sheet 710. Usually, there are two pole ears 2201, and the two pole ears 2201 are respectively a positive pole ear and a negative pole ear, and the positive pole ear and the negative pole ear are located on opposite sides of the battery cell 2200. Correspondingly, the shell 2100 is provided with two openings 2102 communicating with the receiving cavity 2101, and the two openings 2102 are arranged opposite to each other. Adaptively, two cover plate assemblies 1000 are provided, and the two cover plate assemblies 1000 are respectively fixed at the two openings 2102, and the lead-out pieces of the two cover plate assemblies 1000 are respectively fixedly connected to the positive electrode tab and the negative electrode tab.

[0043] It can be understood by those skilled in the art that the conductive plate 300 can be a metal thin plate with excellent conductivity, such as an aluminum plate, a copper plate, etc. In the embodiment of the present application, the conductive plate 300 is preferably an aluminum plate. It can also be understood by those skilled in the art that in the embodiment of the present application, the seal 600 also has insulation. It can also be understood by those skilled in the art that the locking member 200 can be a rivet, and the height of the clamping portion 210 of the locking member 200 is preferably less than the thickness of the conductive plate 300. In this way, it can be avoided that the clamping portion 210 extends out of the conductive plate after the locking member 200 is locked, thereby ensuring the beauty of the cover plate 500 after assembly. On the other hand, the locking member 200 is also conductive and can be used for electrical conduction between the electrode column 100 and the conductive block.

[0044] Please refer to Figure 1 It can be understood by those skilled in the art that, in order to facilitate the positioning between the conductive plate 300, the insulating pad 400 and the cover plate 500, a first limiting groove 410 can be recessed on the surface of the insulating pad 400 facing the conductive plate 300, and the conductive plate 300 can be partially located in the first limiting groove 410. In this way, it is convenient to limit the conductive plate 300. On the other hand, the periphery of the conductive plate 300 is surrounded by the peripheral wall of the first limiting groove 410, so that the insulation between the conductive plate 300 and the cover plate 500 can be further ensured. A second limiting groove 510 can also be recessed on the side of the cover plate 500 facing the insulating pad 400, and the insulating pad 400 can be placed in the second limiting groove 510 to facilitate the limiting of the insulating pad 400.

[0045] It is known to those skilled in the art that the seal 600, the cover plate 500 and the insulating pad 400 are all provided with through holes, and the diameter of the through holes is larger than the diameter of the first conductive segment 110, so that, on the one hand, the first conductive segment 110 can be easily installed, and on the other hand, the first conductive segment 110 can be prevented from contacting with the cover plate 500, and conduction between the first conductive segment 110 and the cover plate 500 can be prevented. By respectively arranging the insulating pad 400 and the seal 600 on both sides of the cover plate 500, conduction between the electrode column 100 and the conductive plate 300 and the cover plate 500 can be prevented, thereby ensuring safety in use.

[0046] In the embodiment of the present application, during the assembly of the cover plate assembly 1000, one end of the first conductive segment 110 of the electrode column 100 having a locking hole passes through the through holes opened on the sealing member 600, the cover plate 500 and the insulating pad 400 in sequence. The locking end of the locking member 200 passes through the conductive plate 300 and extends into the first conductive segment 110, and then the locking member 200 and the electrode column 100 are pressed and locked. During this process, the sealing member 600 is compressed and deformed, thereby producing a sealing effect, and the end of the locking member 200 extending into the locking hole expands radially under the action of the pressing force, so that the locking member 200 is engaged in the locking hole, so that a mutually engaged mechanical interlocking structure is formed between the locking member 200 and the electrode column 100. In this way, in the process of installing the electrode column 100 and the conductive plate 300 on the cover plate 500, there is no need to use welding or other methods for fixing, thereby reducing the difficulty of installation and ensuring the conductivity between the electrode column 100 and the conductive plate 300.

[0047] In some embodiments, the electrode column 100 is made of copper or aluminum. In the embodiment of the present application, since riveting is adopted, welding is not required, and the welding performance of the material of the electrode column 100 does not need to be considered, so the requirements for the material of the electrode column 100 can be reduced. And since the riveting structure is adopted for fixing, the material of the locking member 200 can also be consistent with that of the electrode column 100, so that the thermal performance and conductive performance of the electrode column 100 and the locking member 200 can be consistent after locking, so that loosening caused by inconsistent expansion performance after heating can be avoided, and the conductive performance can be guaranteed. Of course, those skilled in the art can also understand that the material of the locking member 200 and the first conductive segment 110 may also be inconsistent. In addition, the material of the electrode column 100 may also be a copper-aluminum alloy or other conductive metals, which is not specifically limited in the embodiment itself.

[0048] In some embodiments, please refer to Figure 4The conductive plate 300 is provided with a mounting groove 310 on one side facing the cover plate 500, and a portion of the first conductive segment 110 extends into the mounting groove 310 and presses against the bottom wall of the mounting groove 310. In the embodiment of the present application, since the first conductive segment 110 presses against the bottom wall of the mounting groove 310, the first conductive segment 110 can be directly connected to the conductive plate 300, thereby increasing the stability of conduction.

[0049] In some embodiments, the seal 600 has a preset compression amount, and the depth of the mounting groove 310 is equal to the preset compression amount. It can be understood by those skilled in the art that the preset compression amount in the embodiment of the present application means that the seal 600 can ensure the sealing effect and avoid excessive compression to reduce the service life under this compression amount. It can also be understood by those skilled in the art that the preset compression amount is determined according to the design requirements of the designer.

[0050] Specifically, when the seal 600 is in a natural state, the end of the first conductive segment 110 away from the flange 120 is flush with the side of the conductive block close to the cover plate 500. It is known to those skilled in the art that during the assembly of the cover plate 500, there is a high precision requirement for the compression of the seal 600, and the compression of the seal 600 needs to be accurately controlled, so as to achieve the sealing effect while extending the service life of the seal 600. For example, if the compression of the seal 600 after installation is too small, it may cause a poor seal, while if the compression of the seal 600 is too large, it may cause the seal 600 to fail easily and reduce the service life.

[0051] In the embodiment of the present application, before the locking member 200 is locked, the side of the first conductive segment 110 away from the flange 120 is flush with the side of the conductive block facing the cover plate 500, and after the locking member 200 is locked, the side of the first conductive segment 110 away from the flange 120 is pressed against the bottom wall of the installation groove 310. In this way, the bottom wall of the installation groove 310 also acts as a limiting surface, which can prevent the first conductive segment 110 from further moving during the locking process and prevent the seal 600 from being excessively compressed. From the above, it can be seen that during the locking process of the locking member 200, the distance that the first conductive segment 110 can move is the depth of the installation groove 310, and this distance is generated by the compression of the seal 600. Therefore, in the embodiment of the present application, it is only necessary to calculate the preset compression amount of the seal 600, and then set the depth of the installation groove 310 to the preset compression amount of the seal 600. In this way, during the locking process of the locking member 200, the compression amount of the seal 600 can be accurately controlled, which can not only ensure the sealing effect of the seal 600, but also extend the service life of the seal 600. It can be understood by those skilled in the art that different electrode columns 100 or seals 600 have different compression requirements, and those skilled in the art can match different conductive plates 300 to achieve accurate control of the compression amount of the seal 600.

[0052] For more details, please refer to Figure 5 and Figure 6 In the embodiment of the present application, the thickness and height are set to refer to the dimension along the axial direction of the first conductive segment 110. The thickness of the seal 600 in the natural state is set to δ1, the thickness of the cover plate 500 is set to δ2, and the thickness of the insulating pad 400 is set to δ3. Then the length L of the first conductive segment 110 = δ1 + δ2 + δ3. In this way, it can be ensured that before the locking member 200 is locked, the end of the first conductive segment 110 away from the flange 120 is just flush with the side of the conductive block facing the cover plate 500. The depth of the mounting groove 310 can be set to H. When the first conductive segment 110 and the locking member 200 are locked, the first conductive segment 110 abuts against the bottom wall of the mounting groove 310. At this time, the thickness of the seal 600 is set to δ11. In this process, the distance that the first conductive segment 110 moves toward the bottom wall of the mounting groove 310 is the depth H of the mounting groove 310. Obviously, the compression amount of the seal 600 Δδ = δ1-δ 11 =H. Of course, those skilled in the art can also understand that the cover plate 500 and the insulating pad 400 have strong rigidity, and the compression amount during the locking process can be ignored. In this way, by setting the depth of the mounting groove 310 and using the bottom wall surface of the mounting groove 310 as the limiting surface, the compression amount of the sealing member 600 can be accurately guaranteed, thereby ensuring the sealing life of the battery.

[0053] In some embodiments, there is a gap 900 between the side wall surface of the mounting groove 310 and the side wall surface of the first conductive segment 110. It can be understood by those skilled in the art that during the locking process of the locking member 200, the expansion portion 220 of the locking member 200 will radially squeeze the first conductive segment 110 during the expansion process, so the first conductive segment 110 will also expand radially. In the embodiment of the present application, the gap 900 is provided to ensure that a space is reserved for the first conductive segment 110 to expand radially under the extrusion of the expansion portion 220, thereby ensuring that the locking member 200 can be mutually locked with the first conductive segment 110 to form a mechanical interlocking structure and ensure the locking strength.

[0054] In some embodiments, the gap 900 is greater than or equal to 1 mm. According to calculations, when the gap 900 is greater than or equal to 1 mm, the space required for the expansion of the first conductive segment 110 can be satisfied. Of course, those skilled in the art can also understand that in a specific design, the designer also needs to consider the degree of deformation of the locking member 200 to make specific settings. Of course, in order to ensure that the deformation of one end of the first conductive segment 110 interlocked with the expansion portion 220 does not interfere with the peripheral wall surface of the mounting groove 310, the dimension of the mounting groove 310 perpendicular to the depth direction can be designed to be large enough. For example, the mounting groove 310 can also be set as a square groove, etc.

[0055] In some embodiments, please refer to Figure 4 , the bottom wall of the first limiting groove 410 is provided with an exhaust groove 430, and one end of the exhaust groove 430 is connected to the through hole 420. It is known to those skilled in the art that the through hole 420 of the first limiting groove 410 here is the through hole of the insulating member. In the embodiment of the present application, by providing the exhaust groove 430, the sealing member 600 can be effectively prevented from being missing. Specifically, when the sealing member 600 is missing, at this time, the flange 120 is directly fitted with the cover plate 500. After the cover plate assembly 1000 is installed on the single cell 2000, the airflow in the installation cavity of the single cell 2000 can overflow along the exhaust groove 430, so that the detection equipment can quickly identify that the airtightness of the cover plate assembly 1000 is unqualified and prevent defective products from flowing out. It can be understood by those skilled in the art that the other end of the exhaust groove 430 can extend to the side wall surface of the first limiting groove 410, so that it can be convenient for the detection equipment to detect. Those skilled in the art may also understand that there may be multiple exhaust grooves 430 . In the embodiment of the present application, the number of exhaust grooves 430 is preferably two, and the axes of the two exhaust grooves 430 are collinear and pass through the center of the through hole 420 .

[0056] In some embodiments, please refer to Figure 1 and Figure 2, a portion of the sealing member 600 extends between the first conductive segment 110 and the through hole of the cover plate 500. Such a configuration can ensure insulation between the first conductive segment 110 and the cover plate 500, and prevent electrical conduction between the first conductive segment 110 and the cover plate 500.

[0057] In some embodiments, please refer to Figure 2 The second conductive segment 130 is provided with a process hole 140 on a side away from the flange 120. It can be understood by those skilled in the art that a riveting mold is required when the locking member 200 is riveted with the electrode column 100. For details, please refer to Figure 7 The riveting mold includes a first mold 800 and a second mold 810. The first mold 800 is located above the locking member 200, and the second mold 810 is at least partially located in the process hole 140. The first mold 800 and the second mold 810 are close to each other, so that the locking member 200 is riveted in the locking hole of the first conductive segment 110. In this process, since the second mold 810 is located in the process hole 140, the electrode column 100 will not be damaged, thereby ensuring the safety of the electrode column 100.

[0058] Specifically, the second mold 810 is located in the process hole 140 and supports the electrode column 100. The first mold 800 applies a downward force to the clamping portion 210 of the locking member 200, so that the puncture member in the expansion portion 220 first contacts the conductive plate 300. The first mold 800 continues to apply a downward force. After the puncture member pierces the conductive plate 300, it continues to move downward and contacts the first conductive segment 110, and the clamping portion 210 runs into the hole pierced by the puncture member. At this time, the first mold 800 continues to apply a downward force to the clamping portion 210, and the puncture member partially penetrates the first conductive segment 110. At the same time, the puncture member will expand in a direction away from the center of the electrode column 100, and in this process, the seal 600 will be compressed until the first conductive segment 110 abuts against the bottom wall of the mounting groove 310, and the seal 600 reaches a preset compression amount. At this point, the expansion portion 220 is located in the first conductive segment 110 and expands outward in a direction away from the center of the electrode column 100, and the clamping portion 210 is embedded in the conductive plate 300, that is, the locking member 200 completes the fixation of the conductive plate 300 and the electrode column 100. It can be known to those skilled in the art that downward in the embodiment of the present application refers to the direction from the first mold 800 to the second mold 810.

[0059] The embodiment of the present application further provides a single cell 2000, comprising the cover plate assembly 1000 described in any one of the above items and a housing 2100 having an opening 2102, wherein the cover plate assembly 1000 covers the opening 2102. Since the single cell has the above cover plate assembly 1000, the single cell 2000 also has the technical effects described in the above cover plate assembly 1000, which will not be described in detail here.

[0060] The present application also provides a battery device, including a box and the above-mentioned single battery 2000, wherein the single battery 2000 is disposed in the box. Since the battery device has the single battery 2000, the battery device also has the technical effect of the single battery 2000, which will not be described in detail here.

[0061] The present application also provides an electric device, including the above-mentioned single battery 2000, or the above-mentioned battery device. Since the single battery 2000 or the battery device has the above-mentioned cover plate assembly 1000, the electric device also has the technical effects described in the above-mentioned cover plate assembly 1000, which will not be repeated here.

[0062] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea.

Claims

1. A cover plate assembly, characterized in that: It includes an electrode column, a locking piece and a conductive plate; The electrode column comprises a first conductive segment, the first conductive segment abuts against one side of the conductive plate, and the locking member is fixedly connected to the first conductive segment and the conductive plate respectively, so that the electrode column is fixedly connected to the conductive plate.

2. The cover plate assembly according to claim 1, characterized in that: The locking member comprises a clamping portion and an expansion portion which are fixedly connected, wherein the clamping portion is at least partially embedded in the conductive plate, and the expansion portion extends into the first conductive segment and expands in a direction away from the center of the locking member.

3. The cover plate assembly according to claim 2, characterized in that: The expansion portion includes a plurality of piercing members, and the plurality of piercing members are circumferentially arranged at one end of the clamping portion; Any one of the piercing members is at least partially located in the first conductive segment, and one end of the piercing member away from the clamping portion expands in a direction away from the center of the locking member; the clamping portion is embedded in the conductive plate.

4. The cover plate assembly according to claim 1, characterized in that: The locking member comprises a locking head and a first clamping portion which are fixedly connected, and a second clamping portion is provided on a side of the first conductive segment facing the conductive plate; The locking head is in contact with the conductive plate, and the first clamping portion passes through the conductive plate and is clamped with the second clamping portion.

5. The cover plate assembly according to claim 1, characterized in that: The electrode column is made of copper or aluminum.

6. The cover plate assembly according to claim 1, characterized in that: The cover plate assembly also includes an insulating pad and a cover plate; The conductive plate, the insulating pad and the cover plate are stacked in sequence; the first conductive segment passes through the cover plate and the insulating pad and abuts against the conductive plate.

7. The cover plate assembly according to claim 6, characterized in that: The cover plate assembly further includes a seal; the electrode column further includes a flange, the flange is fixedly connected to an end of the first conductive segment away from the conductive plate; the seal is located between the flange and the cover plate, and the seal is in a compressed state.

8. The cover plate assembly according to claim 7, characterized in that: A mounting groove is provided on one side of the conductive plate facing the cover plate, and the first conductive segment presses against a bottom wall surface of the mounting groove.

9. The cover plate assembly according to claim 8, characterized in that: The sealing element has a preset compression amount, and the depth of the mounting groove is equal to the preset compression amount.

10. The cover plate assembly according to claim 8, characterized in that: There is a gap between the side wall surface of the mounting groove and the side wall surface of the first conductive segment.

11. The cover plate assembly according to claim 7, characterized in that: A portion of the seal extends between the first conductive segment and the through hole of the cover plate.

12. The cover plate assembly according to claim 6, characterized in that: A first limiting groove is provided on one side of the insulating pad facing the conductive plate, a through hole is provided on the bottom wall of the first limiting groove, the first conductive segment passes through the through hole and cooperates with the locking member, and the conductive plate is located in the first limiting groove.

13. The cover plate assembly according to claim 12, characterized in that: An exhaust groove is provided on the bottom wall surface of the first limiting groove, and one end of the exhaust groove is connected to the through hole.

14. The cover plate assembly according to any one of claims 7 to 11, characterized in that: The cover plate assembly also includes spacers and lead-out plates that are stacked; The electrode column further comprises a second conductive segment, wherein the second conductive segment is connected to a side of the flange away from the first conductive segment; The spacer and the lead-out piece are both sleeved on the second conductive segment, and a side of the spacer facing away from the lead-out piece is in contact with the cover plate, and the lead-out piece is fixedly connected to the second conductive segment.

15. The cover plate assembly according to claim 14, characterized in that: A process hole is provided on a side of the second conductive segment facing away from the flange.

16. A single cell battery, characterized in that: It comprises the cover plate assembly according to any one of claims 1 to 15 and a shell having an opening, wherein the cover plate assembly covers the opening.

17. A battery device, characterized in that: It comprises a box body and the single battery as claimed in claim 16, wherein the single battery is arranged in the box body.

18. An electrical equipment, characterized in that:It comprises the single battery as claimed in claim 16 or the battery device as claimed in claim 17.

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