Cover plate structure and battery

Abstract

The invention belongs to the technical field of batteries, and discloses a cover plate structure and a battery, the cover plate structure comprises a cover plate body and a conductive assembly, the cover plate body is used for being connected with a tab, and the tab and the cover plate body are respectively arranged on adjacent side walls of a battery cell; the conductive assembly comprises a conductive block, a transition piece and an adapter piece, the transition piece is electrically connected with the conductive block and the adapter piece, and one end, deviating from the transition piece, of the adapter piece is electrically connected with the tab, so that the conductive block is electrically connected with the tab through the transition piece and the adapter piece. Therefore, the cover plate body and the tabs are respectively arranged on the adjacent side walls of the battery cell, so that the space of the side walls of the battery cell can be effectively utilized, the step of mounting an adapter in the battery cell is omitted, the space utilization rate of the battery cell is improved, the distance between the cover plate body and the battery cell is shortened, the assembly difficulty is reduced, the overcurrent capability and the temperature rise are improved, and the product performance is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a cover plate structure and a battery. Background Art

[0002] A battery is a device that can convert chemical energy into electrical energy and is widely used in various scenarios.

[0003] The battery includes a cell, a cover and a shell. The cell is arranged in the shell. The cover is fixedly connected to the shell to provide protection for the cell. The cell is connected to a tab, and the cover is connected to a pole. The tab and the pole are electrically connected through an adapter so that the current generated by the cell is transmitted to the external circuit through the pole.

[0004] In order to avoid setting the pole ear and adapter in the shell accommodating cavity, improve the space utilization in the shell accommodating cavity, and reduce the risk of the pole ear tearing, the existing technology opens a slit hole on the cover plate, so that the pole ear passes through the slit hole and is located on the outside of the cover plate, so that the pole ear is directly electrically connected to the pole. However, the tolerance precision of opening the slit hole on the cover body is high. If the hole is too small, it is difficult to pass through the mold punching. If the hole is too large, it will affect the air tightness and structural strength of the cover plate. The processing and assembly are difficult and may reduce the product performance. The pole ear is set through the slit hole, not only the insulating parts and sealing parts need to be added, but the flow capacity must also be considered. The production rate is low, and there are many types of assembly parts, and the product consistency is poor. Summary of the Invention

[0005] The object of the present invention is to provide a cover plate structure and a battery to solve the problems of difficulty in assembling the tabs and the poles and poor product performance.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] On the one hand, a cover plate structure includes: a cover plate body for connecting to a tab, the tab and the cover plate body are respectively arranged on side walls adjacent to the battery cell; a conductive component, the conductive component includes a conductive block, a transition piece and a adapter piece, the transition piece is electrically connected to the conductive block and the adapter piece, and the end of the adapter piece facing away from the transition piece is electrically connected to the tab, so that the conductive block is electrically connected to the tab through the transition piece and the adapter piece.

[0008] Preferably, the conductive assembly further includes a connector, which is fixedly and electrically connected to the conductive block and the transition piece.

[0009] Preferably, the cover structure further includes an upper plastic, which is arranged between the conductive block and the cover body; and / or the cover structure further includes a lower plastic, which is arranged between the cover body and the transition piece.

[0010] Preferably, the conductive component further includes a welding block, the transition piece is provided with a welding groove for accommodating the welding block, and the transition piece is welded to the adapter piece via the welding block.

[0011] Preferably, the cover structure further includes a lower plastic, which is arranged between the cover body and the transition piece. One of the cover body and the lower plastic is provided with a positioning piece corresponding to the position of the welding groove, and the other is provided with a positioning hole corresponding to the position of the positioning piece to limit the relative position of the cover body and the lower plastic.

[0012] Preferably, the transition piece includes a first part and a second part, the first part is connected to the second part, the end of the first part facing away from the second part is fixedly connected to the adapter piece, the end of the second part facing away from the first part is electrically connected to the conductive block, and the second part is located on the side of the adapter piece facing away from the pole ear.

[0013] Preferably, the distance between the second portion and the cover body is greater than the distance between the first portion and the cover body.

[0014] Preferably, the cover plate structure further includes an insulating bracket, and the insulating bracket is arranged between the adapter plate and the battery core.

[0015] On the other hand, a battery includes a battery cell with pole tabs and the cover structure as described above, wherein two pole tabs with opposite electrical properties are respectively arranged on opposite side walls of the battery cell, and two cover structures are provided, and the two cover structures are respectively connected to the pole tabs with opposite electrical properties.

[0016] Preferably, the battery cell is provided with multiple, multiple electrically identical pole tabs are provided on the same side of the battery cell, one cover plate structure includes an adapter plate, and two adapter plates are respectively provided on both sides of the pole tab of the battery cell, and each adapter plate is electrically connected to the pole tab on the same side.

[0017] Beneficial effects of the present invention:

[0018] A cover plate structure includes a cover plate body and a conductive component. The cover plate body is connected to the battery cell, and the battery cell is connected to a tab. The tab and the cover plate body are respectively arranged on adjacent side walls of the battery cell; the conductive component includes a conductive block, a transition piece and an adapter piece. The transition piece is electrically connected to the conductive block and the adapter piece, and the end of the adapter piece facing away from the transition piece is electrically connected to the tab, so that the conductive block is electrically connected to the tab through the transition piece and the adapter piece.

[0019] In this way, the cover body and the tabs are respectively arranged on the adjacent side walls of the battery cell, so that the tabs transmit current to the external circuit through the adapter plate, transition plate and conductive block, and the step of installing the adapter inside the battery cell is eliminated, thereby improving the space utilization rate of the battery cell side, shortening the distance between the cover body and the battery cell, and making the battery structure more compact. The conductive block is connected to the tabs through the transition plate and adapter plate, which can reduce the internal resistance between the conductive block and the adapter plate, improve the current flow capacity and temperature rise, and reduce the assembly difficulty and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an exploded view of a cover plate structure according to an embodiment of the present invention;

[0021] Figure 2 is a partial cross-sectional view of a battery in one embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of the cover structure in one embodiment of the present invention. Figure 1 ;

[0023] Figure 4 This is a cross-sectional view of the cover structure in one embodiment of the present invention. Figure 2 ;

[0024] Figure 5 is a cross-sectional exploded view of a cover plate structure according to an embodiment of the present invention;

[0025] Figure 6 is a top view of a cover plate structure in one embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram showing the structure of a tab on one side of a battery in one embodiment of the present invention;

[0027] Figure 8 It is a schematic diagram showing the structure of the tab on the other side of the battery in one embodiment of the present invention.

[0028] In the picture:

[0029] 1. Cover body; 11. Limiting groove; 12. Explosion-proof plate; 2. Conductive component; 21. Conductive block; 22. Transition piece; 221. First part; 222. Second part; 223. Welding groove; 23. Adapter; 24. Connector; 241. Sealing ring; 25. Welding block; 3. Upper plastic; 31. Accommodating groove; 4. Lower plastic; 5. Insulating bracket; 51. Through hole; 6. Positioning piece; 7. Positioning hole; 8. Battery cell; 81. Tab. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0031] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0034] See Figure 1 and Figure 2 The present invention provides a cover structure, including a cover body 1 and a conductive component 2. The cover body 1 is used to connect with the pole ear 81. The pole ear 81 and the cover body 1 are respectively arranged on the side walls adjacent to the battery core 8; the conductive component 2 includes a conductive block 21, a transition piece 22 and an adapter piece 23. The transition piece 22 is electrically connected to the conductive block 21 and the adapter piece 23. The end of the adapter piece 23 facing away from the transition piece 22 is electrically connected to the pole ear 81, so that the conductive block 21 is electrically connected to the pole ear 81 through the transition piece 22 and the adapter piece 23.

[0035] In this embodiment, the length direction of the cover body 1 is parallel to the length direction of the battery cell 8, and the pole ears 81 with opposite electrical properties are respectively arranged on the two opposite side walls of the battery cell 8. The cover body 1 is arranged on the side wall adjacent to the side wall of the battery cell 8 where the pole ear 81 is arranged. The conductive block 21 is arranged at the center position of the cover body 1. The length direction of the conductive block 21 and the length direction of the transition piece 22 are both parallel to the length direction of the cover body 1. One end of the adapter piece 23 is fixedly connected to the transition piece 22, and the other end is bent toward the side wall where the pole ear 81 is located and fixedly connected to the pole ear 81 by welding.

[0036] In this way, the cover body 1 and the pole ear 81 are respectively arranged on the side walls adjacent to the battery cell 8, so that the conductive block 21 can be connected to the pole ear 81 through the bent adapter plate 23. While realizing the transmission of the internal current of the battery cell 8 to the external circuit through the adapter plate 23, the transition plate 22, and the conductive block 21, the step of installing the adapter inside the battery cell 8 can be omitted, thereby improving the space utilization rate of the side wall of the battery cell 8, reducing the distance between the cover body 1 and the battery cell 8, reducing the internal resistance between the conductive block 21 and the adapter plate 23, improving the overcurrent capacity and temperature rise, and the assembly difficulty is low, the process is simple, and the cost is low.

[0037] See Figure 2 and Figure 3 In some embodiments, the conductive assembly 2 further includes a connector 24, which is fixedly and electrically connected to the conductive block 21 and the transition piece 22. In this embodiment, two connectors 24 are provided, each of which is a rivet made of conductive material. The two rivets respectively penetrate the conductive block 21, the cover body 1, and the end of the transition piece 22 facing away from the adapter piece 23, and rivet the conductive block 21 and the transition piece 22 together. The rivets are riveted to the conductive block 21 to form a pole, and the two rivets are respectively provided at both ends of the conductive block 21.

[0038] Furthermore, a sealing ring 241 is provided between the connecting member 24 and the cover body 1 . The sealing ring 241 is sleeved on the connecting member 24 and abuts against both the connecting member 24 and the cover body 1 to improve the sealing performance of the cover body 1 .

[0039] In this way, the connector 24 can not only limit the relative position of the conductive block 21 and the transition piece 22, so that it can be stably set on the cover body 1, but also enable the conductive block 21 to be electrically connected to the transition piece 22 through the connector 24 to transmit the current output by the pole ear 81; the staff can pre-assemble the conductive block 21, the transition piece 22 and the adapter piece 23 to the cover body 1, and then directly weld the pole ear 81 to the adapter piece 23, so as to improve the efficiency of assembling the cover body 1 to the battery cell 8, reduce the difficulty of assembly, and at the same time improve the polarity output performance of the battery cell 8 and product performance.

[0040] It is understandable that the number of the connecting members 24 can be flexibly adjusted according to the specifications of the cover body 1 and is not limited to two, and this embodiment does not impose any limitation on this.

[0041] See Figure 4 and Figure 5 In some embodiments, the cover structure further includes an upper plastic 3 , which is disposed between the conductive block 21 and the cover body 1 ; the cover structure further includes a lower plastic 4 , which is disposed between the cover body 1 and the transition piece 22 .

[0042] In this embodiment, the upper plastic 3 is provided with a receiving groove 31 for placing the conductive block 21. The shape of the receiving groove 31 is adapted to the shape of the conductive block 21 to limit the relative position of the conductive block 21 and the upper plastic 3. The cover body 1 is provided with a limiting groove 11 on the side facing the upper plastic 3. The shape of the limiting groove 11 is adapted to the shape of the upper plastic 3 to limit the position of the upper plastic 3 and the cover body 1; the length of the lower plastic 4 is equal to the length of the cover body 1, and the connecting member 24 is arranged to pass through the conductive block 21, the upper plastic 3, the cover body 1, the lower plastic 4, and the transition piece 22 in sequence.

[0043] In this way, the upper plastic 3 and the lower plastic 4 can improve the insulation effect of the cover body 1, avoid short circuit, improve product performance and product overcurrent capacity, reduce the difficulty of assembling the tab 81 and the pole and the difficulty of assembling the battery as a whole, and the upper plastic 3 can limit the position of the conductive block 21, and the lower plastic 4 can limit the position of the connecting piece through the connector 24, so that the overall cover structure is more stable, avoid the occurrence of structural deviation or falling off, and improve the product yield.

[0044] See Figure 1 and Figure 2 In some embodiments, the conductive assembly 2 further includes a welding block 25. The transition piece 22 defines a welding slot 223 for accommodating the welding block 25. The transition piece 22 is welded to the adapter piece 23 via the welding block 25. In this embodiment, the transition piece 22 and the adapter piece 23 are connected using a penetration welding process. The length direction of the welding slot 223 is parallel to the length direction of the cover plate body 1. Two welding slots 223 are provided, spaced apart along the width direction of the cover plate body 1. The projection of the welding slot 223 in the thickness direction of the cover plate body 1 is located inside the projection of the transition piece 22 in the thickness direction of the cover plate body 1.

[0045] It should be noted that the transition piece 22 is assembled onto the adapter piece 23 so that the end of the transition piece 22 facing away from the conductive block 21 overlaps with the end of the adapter piece 23 facing away from the pole ear 81, and the welding block 25 is placed inside the welding groove 223, and the transition piece 22 and the adapter piece 23 are penetrated and welded to achieve the fixation of the transition piece 22 and the adapter piece 23.

[0046] In this way, the transition piece 22 and the adapter piece 23 are connected by penetration welding, which can reduce the distance between the battery cell 8 and the cover body 1, effectively utilize the side space of the battery cell 8, increase the capacity of the battery cell 8 and the internal available space, thereby improving the product's current flow capacity and temperature rise, and can reduce the internal resistance between the pole and the adapter piece 23, reduce assembly difficulty and production cost; opening a welding groove 223 on the transition piece 22 can facilitate the positioning of the welding block 25 on the transition piece 22, improve welding penetration and production efficiency, and enable the transition piece 22 and the adapter piece 23 to achieve stable electrical connection, thereby improving product performance.

[0047] It can be understood that the connection method between the transition piece 22 and the adapter piece 23 is not limited to penetration welding, but can also be spot welding, laser welding and other connection methods. The specific connection methods can be flexibly adjusted according to actual needs and will not be listed in detail here; welding holes can also be opened on the transition piece 22 to further facilitate the connection between the welding block 25 and the adapter piece 23.

[0048] See Figure 1 In some embodiments, a positioning member 6 is provided at a position corresponding to the welding groove 223 of one of the cover body 1 and the lower plastic 4, and a positioning hole 7 is provided at a position corresponding to the positioning member 6 of the other to limit the relative position of the cover body 1 and the lower plastic 4.

[0049] In this embodiment, the positioning member 6 is a positioning protrusion, and the positioning protrusion is surrounded by a welding groove 223 and is arranged on the side of the lower plastic 4 away from the transition piece 22. The shape of the positioning hole 7 is adapted to the positioning protrusion, and the positioning hole 7 is opened on the cover body 1, so that when the positioning protrusion is inserted into the positioning hole 7, it can limit the relative position of the cover body 1 and the lower plastic 4, and insulate the welding point between the transition piece 22 and the adapter piece 23; the side of the positioning protrusion away from the cover body 1 is higher than the side of the welding block 25 away from the cover body 1.

[0050] In this way, the positioning protrusion can not only realize the rapid assembly of the lower plastic 4 and the cover body 1, reducing the assembly difficulty and production cost, but also insulate the cover body 1 and the transition piece 22 to avoid short circuit, improve the safety and stability of the cover body 1, and thus improve product performance.

[0051] It is understandable that the positioning protrusion can also be set on the cover body 1, and the positioning hole 7 is opened on the lower plastic 4. The setting positions of the positioning protrusion and the positioning hole 7 can be flexibly adjusted to achieve the insulation setting of the welding point of the transition piece 22 and the adapter piece 23 from the cover body 1, which will not be elaborated here.

[0052] See Figure 2 and Figure 5In some embodiments, the transition piece 22 includes a first part 221 and a second part 222, the first part 221 is connected to the second part 222, the end of the first part 221 facing away from the second part 222 is fixedly connected to the adapter piece 23, the end of the second part 222 facing away from the first part 221 is electrically connected to the conductive block 21, and the second part 222 is located on the side of the adapter piece 23 facing away from the pole ear 81.

[0053] In this embodiment, the first portion 221 and the second portion 222 are integrally formed, the welding groove 223 is provided on the first portion 221 , the connecting member 24 is connected to the second portion 222 , and the width of the first portion 221 is equal to the width of the second portion 222 .

[0054] In this way, the first part 221 is connected to the adapter plate 23, and the second part 222 is connected to the conductive block 21 through the connecting piece 24, so that the two ends of the transition plate 22 can stably limit the relative position of the adapter plate 23 and the transition plate 22, and the relative position of the conductive block 21 and the transition plate 22. At the same time, it is convenient to assemble the cover structure, improve the assembly efficiency of the pole ear 81 and the pole, reduce production costs, reduce the distance between the cover body 1 and the battery cell 8, and improve the space utilization of the battery cell 8.

[0055] It can be understood that the first part 221 and the second part 222 can also be detachably connected in the form of plug-ins and slots, so that the first part 221 is connected to the adapter plate 23 and the second part 222 is connected to the conductive block 21. In this embodiment, the first part 221 and the second part 222 are integrally formed, and the purpose is to increase the structural strength of the transition plate 22 so that it can stably transmit current to the conductive block 21. The connection method and setting position of the first part 221 and the second part 222 can be adjusted according to actual needs, and no further examples are given here.

[0056] See Figure 2 and Figure 6 In some embodiments, the distance between the second portion 222 and the cover body 1 is greater than the distance between the first portion 221 and the cover body 1, that is, the connection between the second portion 222 and the first portion 221 extends toward the direction close to the battery cell 8, and the second portion 222 is arranged closer to the battery cell 8 than the first portion 221. A gap (not shown in the figure) is formed between the lower plastic 4 and the battery cell 8 corresponding to the position of the second portion 222 away from the first portion 221, and the explosion-proof plate 12 is correspondingly arranged at the position of the cover body 1 corresponding to the gap.

[0057] In this way, the second part 222 is arranged closer to the battery cell 8, which can leave assembly space for the connector 24, facilitate assembly, and save the space occupied by the cover structure in the thickness direction of the cover body 1. At the same time, when the battery cell 8 loses control and generates gas, the gas can flow in the gap and be discharged to the outside through the explosion-proof plate 12, avoiding the accumulation of gas on the inside of the cover body 1, thereby improving the safety of the battery cell 8 and product performance.

[0058] It can be understood that the first part 221 and the second part 222 can also be arranged flush, that is, the transition piece 22 is a straight plate structure whose length direction is parallel to the cover body 1. The relative positions of the first part 221 and the second part 222 can be flexibly adjusted according to actual needs, and can achieve the limitation of the conductive block 21 and the adapter piece 23. No more examples are given here.

[0059] See Figure 5 and Figure 7 In some embodiments, the cover structure further includes an insulating bracket 5, which is disposed between the adapter plate 23 and the battery cell 8. In this embodiment, the insulating bracket 5 is fixedly connected to the side wall of the battery cell 8. The length of the insulating bracket 5 is adapted to the length of the battery cell 8 so as to cover the side wall of the battery cell 8. The insulating bracket 5 has a plurality of circular through holes 51 evenly spaced along its length.

[0060] In this way, the through hole 51 can facilitate heat dissipation and exhaust of the battery cell 8, improve product performance, and improve the insulation performance and structural strength of the cover structure to avoid short circuit phenomena; assembling the adapter plate 23, transition plate 22, cover body 1, conductive block 21 and other structures onto the insulating bracket 5 can achieve rapid assembly of the cover structure and the battery cell 8, improve assembly efficiency and reduce assembly difficulty.

[0061] It is understandable that the insulating bracket 5 may not have the through hole 51, or may have a through hole 51 in a square, strip, wavy or other shape. The shape and diameter of the through hole 51 may be flexibly adjusted according to actual needs, and this embodiment does not limit this. The insulating bracket 5 can be connected to the battery cell 8 by gluing or other means, so that the insulating bracket 5 can be fixedly set on the battery cell 8.

[0062] See Figure 7 and Figure 8 The present invention also provides a battery, comprising a battery cell 8 provided with a pole ear 81 and a cover plate structure, wherein two pole ears 81 with opposite electrical properties are respectively provided on opposite side walls of the battery cell 8, and two cover plate structures are provided, and the two cover plate structures are respectively connected to the pole ears 81 with opposite electrical properties.

[0063] In this embodiment, the cover body 1 is respectively arranged on two side walls adjacent to the side walls where the pole ears 81 of the battery cell 8 are arranged. One cover body 1 is correspondingly connected to a transfer plate 23, and the two transfer plates 23 are respectively electrically connected to the pole ears 81 with opposite electrical properties arranged on both sides of the battery cell 8.

[0064] In this way, by connecting the pole tab 81 to the adapter plate 23, the pole tabs 81 with different electrical properties can be transmitted to the external circuit through the adapter plate 23, the transition plate 22, the connector 24, and the conductive block 21 respectively, thereby realizing the polarity output function of the battery cell 8, and effectively utilizing the space on the side wall of the battery cell 8, shortening the distance between the battery cell 8 and the cover body 1, improving space utilization, and reducing the difficulty of assembling the pole tab 81 and the pole, thereby improving the product's current capacity and temperature rise, and thus improving product performance.

[0065] It can be understood that the two pole ears 81 can also be set on the same side wall of the battery cell 8, and the two cover structures are respectively set on the two side walls adjacent to the side wall, so that the two adapter plates 23 are respectively electrically connected to the two pole ears 81. The setting position of the cover structure can be adjusted according to actual needs, so that the pole ears 81 can be electrically connected to the pole column outside the battery cell 8. No further details will be given here.

[0066] See Figure 7 and Figure 8 In some embodiments, a plurality of battery cells 8 are provided, and the plurality of battery cells 8 are arranged side by side to form a battery cell group. A plurality of tabs 81 with the same electrical properties are arranged on the same side of the battery cell 8, that is, the positive tabs of the plurality of battery cells 8 are arranged on one side of the battery cell group, and the negative tabs are arranged on the other side of the battery cell group. A cover structure includes a transfer plate 23, and the two transfer plates 23 are respectively arranged on both sides of the tabs 81 of the battery cell 8, and each transfer plate 23 is electrically connected to the tabs 81 on the same side.

[0067] In this embodiment, there are four battery cells 8, and the insulating brackets 5 are respectively arranged at both ends of the battery cell group. The length direction of the end of the adapter 23 away from the insulating bracket 5 is parallel to the arrangement direction of the battery cells 8. One of the adapter plates 23 is electrically connected to all the positive ears, and the other adapter plate 23 is electrically connected to all the negative ears to realize the series connection of the four battery cells 8.

[0068] In this way, by electrically connecting the tabs 81 of the same electrical properties through the adapter 23, multiple battery cells 8 can be connected in series, which simplifies the assembly steps and the number of parts, improves the space utilization of the battery cells 8 and the assembly efficiency of the battery cell group, and can reduce internal resistance and improve product performance.

[0069] It is understandable that the number of battery cells 8 in the battery cell group is not limited to 4, and may also be 6, 8, etc., which is not limited in this embodiment.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A cover plate structure, It is characterized in that include: A cover plate body (1) is used to be connected to a pole lug (81), wherein the pole lug (81) and the cover plate body (1) are respectively arranged on side walls adjacent to the battery cell (8); A conductive component (2), the conductive component (2) comprising a conductive block (21), a transition piece (22) and an adapter piece (23), the transition piece (22) being electrically connected to the conductive block (21) and the adapter piece (23), and one end of the adapter piece (23) facing away from the transition piece (22) being electrically connected to the pole lug (81), so that the conductive block (21) is electrically connected to the pole lug (81) through the transition piece (22) and the adapter piece (23).

2. The cover plate structure according to claim 1, It is characterized in that The conductive component (2) further comprises a connecting piece (24), wherein the connecting piece (24) is fixedly connected and electrically connected to the conductive block (21) and the transition piece (22).

3. The cover plate structure according to claim 1, It is characterized in that The cover plate structure further comprises an upper plastic (3), wherein the upper plastic (3) is arranged between the conductive block (21) and the cover plate body (1); and / or the cover plate structure further comprises a lower plastic (4), wherein the lower plastic (4) is arranged between the cover plate body (1) and the transition piece (22).

4. The cover plate structure according to claim 1, It is characterized in that The conductive component (2) further comprises a welding block (25), the transition piece (22) is provided with a welding groove (223) for accommodating the welding block (25), and the transition piece (22) is welded to the adapter piece (23) via the welding block (25).

5. The cover plate structure according to claim 4, It is characterized in that The cover plate structure also includes a lower plastic (4), which is arranged between the cover plate body (1) and the transition piece (22), and one of the cover plate body (1) and the lower plastic (4) is provided with a positioning piece (6) at a position corresponding to the welding groove (223), and the other is provided with a positioning hole (7) at a position corresponding to the positioning piece (6) to limit the relative position of the cover plate body (1) and the lower plastic (4).

6. The cover plate structure according to claim 1, It is characterized in that The transition piece (22) comprises a first part (221) and a second part (222), the first part (221) being connected to the second part (222), one end of the first part (221) facing away from the second part (222) being fixedly connected to the adapter piece (23), one end of the second part (222) facing away from the first part (221) being electrically connected to the conductive block (21), and the second part (222) being located on a side of the adapter piece (23) facing away from the pole ear (81).

7. The cover plate structure according to claim 6, It is characterized in that The distance between the second part (222) and the cover plate body (1) is greater than the distance between the first part (221) and the cover plate body (1).

8. The cover plate structure according to any one of claims 1 to 7, It is characterized in that The cover plate structure further comprises an insulating support (5), wherein the insulating support (5) is arranged between the adapter plate (23) and the battery core (8).

9. A battery, It is characterized in that It comprises a battery cell (8) provided with a pole ear (81) and a cover plate structure as described in any one of claims 1 to 8, wherein two pole ears (81) with opposite electrical properties are respectively arranged on opposite side walls of the battery cell (8), and two cover plate structures are provided, and the two cover plate structures are respectively connected to the pole ears (81) with opposite electrical properties.

10. The battery according to claim 9, It is characterized in that The battery cell (8) is provided with a plurality of pole ears (81) with the same electrical properties, which are arranged on the same side of the battery cell (8); a cover plate structure comprises a transfer plate (23); two transfer plates (23) are respectively arranged on both sides of the pole ears (81) of the battery cell (8); and each transfer plate (23) is electrically connected to the pole ears (81) on the same side.

Images