Battery packaging assembly and battery

Abstract

The utility model relates to a battery packaging assembly and a battery. The battery packaging assembly comprises a main control board; the first hardware comprises a first connecting part and a second connecting part which are arranged at an angle, the first connecting part is electrically connected to the first electrode of the battery cell, the second connecting part is electrically connected to the main control board, a first buffer bulge is arranged on the second connecting part, and the first buffer bulge is positioned between the battery cell and the main control board; and the second hardware is electrically connected to the second electrode of the battery cell and the main control board. According to the technical scheme, the technical problems that hardware in a traditional battery is prone to breakage, and the battery is poor in performance and low in stability and reliability are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium batteries, and in particular to a battery packaging assembly and a battery. Background Art

[0002] Lithium-ion batteries are devices that use lithium metal or lithium ions to store and release electrical energy through ion exchange between positive and negative electrodes. With the rapid development of technology, lithium batteries have become the preferred power source for many electronic devices and vehicles.

[0003] In the related art, lithium batteries generally use hardware to realize the packaging of battery cells and PCM components. During the packaging operation, the bottom of the hardware is welded to the electrode of the battery cell, and the top is penetrated through the via hole on the PCM component. However, when the lithium battery is subjected to external vibration, the PCM component and the battery cell are prone to relative movement, causing the hardware connected therebetween to crack and break due to pulling and tearing, affecting the conductivity, stability and reliability of the lithium battery. Utility Model Content

[0004] The present application provides a battery packaging assembly and a battery to solve the technical problems of easy breakage of hardware in traditional batteries, poor battery performance, and low stability and reliability.

[0005] To this end, in a first aspect, an embodiment of the present application provides a battery packaging assembly, which includes: a main control board; a first hardware component, including a first connecting portion and a second connecting portion arranged at an angle, the first connecting portion being electrically connected to a first electrode of a battery cell, the second connecting portion being electrically connected to the main control board, a first buffer protrusion being provided on the second connecting portion, and the first buffer protrusion being located between the battery cell and the main control board; and a second hardware component, electrically connected to the second electrode of the battery cell and the main control board.

[0006] In a possible implementation manner, a first soldering notch is provided on the second connecting portion, and the first soldering notch is located on a side of the second connecting portion away from the first connecting portion.

[0007] In a possible embodiment, the second connecting portion also includes a first connecting plate and a second connecting plate, the first connecting plate is connected between the first connecting portion and the first buffer protrusion, the second connecting plate is connected to the side of the first buffer protrusion away from the first connecting plate, the first connecting plate is parallel to the second connecting plate, and the first soldering notch is arranged on the side of the second connecting plate away from the first buffer protrusion.

[0008] In a possible implementation, the second connection portion further includes a third connection arm disposed in the first soldering notch, the third connection arm extending along the length direction of the second connection portion and partially shielding the first soldering notch.

[0009] In a possible implementation, the first buffer protrusion protrudes toward the first connecting portion.

[0010] In a possible implementation, a second buffer protrusion is further provided on the second connection portion, and the second buffer protrusion is located on a side of the first buffer protrusion away from the first connection portion.

[0011] In a possible implementation, the first connection portion includes a first welding plate and a second welding plate, and the first welding plate and the second welding plate are spaced apart along a length direction of the second connection portion.

[0012] In a possible embodiment, the second hardware includes a third connecting portion and a fourth connecting portion arranged at an angle, the third connecting portion is used to be welded to the second electrode of the battery cell, the fourth connecting portion is used to be connected to the main control board, the fourth connecting portion is provided with a third buffer protrusion, and the third buffer protrusion is located between the battery cell and the main control board.

[0013] In a possible implementation manner, a second soldering notch is further provided on the fourth connecting portion, and the second soldering notch is located on a side of the fourth connecting portion away from the third connecting portion.

[0014] In a possible implementation, a fourth buffer protrusion is further provided on the fourth connecting portion, and the fourth buffer protrusion is located between the third buffer protrusion and the third connecting portion.

[0015] In a second aspect, the present application also provides a battery, comprising: a shell having a accommodating cavity; at least one battery cell disposed in the shell, the battery cell comprising a first electrode and a second electrode; and a battery packaging assembly as described above, wherein a first hardware component of the battery packaging assembly is electrically connected between the first electrode and a main control board of the battery packaging assembly, and a second hardware component of the battery packaging assembly is electrically connected between the second electrode and the main control board.

[0016] In a possible embodiment, two battery cells are provided, two first vias and one second via are provided on the main control board, the two first vias are located on opposite sides of the second via, two first hardware pieces are provided, one first hardware piece corresponds to one battery cell and one first via; one second hardware piece is provided, the second hardware piece includes two third connecting parts and one fourth connecting part, the two third connecting parts are connected to the bottom end of the fourth connecting part along the radial direction of the battery cell, and are respectively welded to the second electrodes of the two battery cells; the fourth connecting part extends along the axial direction of the battery cell and is plugged into the second via.

[0017] According to the battery packaging assembly and battery provided in the embodiment of the present application, the battery packaging assembly includes: a main control board; a first hardware component, including a first connection portion and a second connection portion arranged at an angle, the first connection portion being electrically connected to the first electrode of the battery cell, the second connection portion being electrically connected to the main control board, the second connection portion being provided with a first buffer protrusion, the first buffer protrusion being located between the battery cell and the main control board; and a second hardware component being electrically connected to the second electrode of the battery cell and the main control board. The technical solution of the present application, by adding a first buffer protrusion to the second connection portion, enhances the ductility and buffering performance of the first hardware component between the main control board and the battery cell, avoids the pulling, tearing, and breaking of the first hardware component caused by the relative movement of the main control board and the battery cell during battery vibration, thereby extending the service life of the first hardware component, improving the stability and reliability of the battery, and improving the overall performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments that conform to the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative labor. One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a proportional limitation.

[0019] Figure 1 A schematic diagram of the exploded structure of a battery provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Assembly diagram of

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a first hardware component of a battery packaging assembly provided in the first embodiment of the present application;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a first hardware component of a battery packaging assembly provided in the second embodiment of the present application;

[0023] Figure 5 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of a battery provided in an embodiment of the present application.

[0025] Description of reference numerals:

[0026] 100, first hardware; 101, first soldering notch; 110, first connecting portion; 111, first welding plate; 112, second welding plate; 120, second connecting portion; 121, first buffer protrusion; 122, first connecting plate; 123, second connecting plate; 124, third connecting arm;

[0027] 200, second hardware; 201, second soldering notch; 210, third connecting portion; 220, fourth connecting portion; 221, third buffer protrusion; 222, fourth buffer protrusion;

[0028] 300, main control board; 301, first via hole; 302, second via hole;

[0029] 10. Shell; 20. Battery cell;

[0030] Y, length direction; Z, height direction. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can appreciate the applicability of other processes and / or the use of other materials.

[0033] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0034] See also Figures 1 to 5 The embodiment of the present application provides a battery packaging assembly, which includes: a main control board 300; a first hardware 100, including a first connecting portion 110 and a second connecting portion 120 arranged at an angle, the first connecting portion 110 is electrically connected to the first electrode of the battery cell 20, the second connecting portion 120 is electrically connected to the main control board 300, and the second connecting portion 120 is provided with a first buffer protrusion 121, and the first buffer protrusion 121 is located between the battery cell 20 and the main control board 300; and a second hardware 200, electrically connected to the second electrode of the battery cell 20 and the main control board 300.

[0035] In this embodiment, a first buffer protrusion 121 is added to the second connection portion 120 to enhance the ductility and buffering performance of the first hardware 100 between the main control board 300 and the battery cell 20, thereby avoiding the pulling, tearing, and breaking of the first hardware 100 caused by the relative movement of the main control board 300 and the battery cell 20 during battery vibration, thereby extending the service life of the first hardware 100, improving the stability and reliability of the battery, and improving the overall performance of the battery. In addition, the battery packaging assembly provided in this embodiment can be applied to both cylindrical battery cell structures and plate-shaped battery cell structures or soft-pack batteries, with a wide range of applications, low production costs, and strong structural reliability.

[0036] Specifically, the battery packaging assembly is configured as a composite component including at least a main control board 300, a first hardware 100 and a second hardware 200. The main control board 300 may be a plate-shaped structure, on which a first through hole 301 and a second through hole 302 are arranged at intervals; the first hardware 100 may be an L-shaped nickel sheet, which is arranged between the positive electrode of the battery cell 20 and the main control board 300; the second hardware 200 may be a T-shaped nickel sheet, which is arranged between the negative electrode of the battery cell 20 and the main control board 300. In this way, an electrical circuit is formed between the battery cell 20, the main control board 300, the first hardware 100 and the second hardware 200. Of course, in other embodiments, the first hardware 100 may also be arranged between the negative electrode of the battery cell 20 and the main control board 300, and the second hardware 200 may be arranged between the positive electrode of the battery cell 20 and the main control board 300.

[0037] In a specific example, the first hardware 100 is configured as a composite component including at least a first connection part 110 and a second connection part 120. The first connection part 110 may be a plate-like structure, which may be connected to the positive electrode of the battery cell 20 by tinning welding or the like. The second connection part 120 may be a plate-like structure with a bend, which may be vertically connected to one side of the first connection part 110. The first buffer protrusion 121 is located between the main control board 300 and the battery cell 20 to form a bend buffer space between the two. In this way, the buffering performance of the first hardware 100 may be improved at least in the height direction Z of the second connection part 120, thereby avoiding the occurrence of pulling, tearing, and breaking of the first hardware 100 due to the misalignment of the main control board 300 and the battery cell 20 during vibration, thereby extending the service life of the first hardware 100. The first via hole 301 may be a square hole, the aperture of which is slightly larger than the size of the second connection part 120, so that the second connection part 120 can pass through the first via hole 301; the second connection part 120 and the main control board 300 may also be welded by subsequently placing tin material on the top of the second connection part 120 and above the first via hole 301 to enhance the tightness of the connection between the two; at this time, the first buffer protrusion 121 arranged below the first via hole 301 can effectively prevent the tin material from flowing along the second connection part 120 to the battery cell 20, avoiding the occurrence of tin leakage, thereby improving the soldering effect between the first hardware 100 and the main control board 300 and improving the safety of the battery.

[0038] In addition, the overall length of the second connection part 120 can be smaller than the overall length of the first connection part 110, and the second connection part 120 is arranged at the middle position of the edge of the first connection part 110; the overall height of the second connection part 120 can be smaller than the overall width of the first connection part 110. In this way, while improving the connection stability between the first hardware 100 and the battery cell 20, the occupied space of the first hardware 100 in its height direction Z can also be reduced, so that the layout of the internal components of the battery is compact, the occupied space is reduced, and the miniaturization and refinement of the battery are promoted.

[0039] In one example, the first connection portion 110 and the second connection portion 120 can be integrally formed to facilitate processing. In addition, the first buffer protrusion 121 on the second connection portion 120 can be formed by bending using a bending jig.

[0040] In a possible implementation, the second connection portion 120 is provided with a first soldering notch 101, and the first soldering notch 101 is located on a side of the second connection portion 120 away from the first connection portion 110. In this configuration, the first soldering notch 101 can provide a storage space for excess solder, thereby avoiding the occurrence of solder bumps between the second connection portion 120 and the main control board 300, thereby improving the tinning reliability between the second connection portion 120 and the main control board 300. For example, but not limited to, the first soldering notch 101 can be a trapezoidal notch, with its short side facing the first buffer protrusion 121.

[0041] In a possible embodiment, the second connecting portion 120 also includes a first connecting plate 122 and a second connecting plate 123, the first connecting plate 122 is connected between the first connecting portion 110 and the first buffer protrusion 121, the second connecting plate 123 is connected to the side of the first buffer protrusion 121 away from the first connecting plate 122, the first connecting plate 122 is parallel to the second connecting plate 123, and the first soldering notch 101 is arranged on the side of the second connecting plate 123 away from the first buffer protrusion 121.

[0042] In this embodiment, the specific configuration of the second connection part 120 is further optimized. Specifically, the second connection part 120 is configured as a composite component including at least a first connection plate 122, a first buffer protrusion 121 and a second connection plate 123. The first connection plate 122 can be a long narrow plate, and its long side can be connected to the edge side of the first connection part 110 by welding or the like. The second connection plate 123 can be a rectangular plate, and its length is the same as the length of the first connection plate 122 / first buffer protrusion 121, and its width is greater than the width of the first buffer protrusion 121. The width of the first buffer protrusion 121 is greater than the width of the first connection plate 122. The first soldering notch 101 is arranged at the middle position of the second connection plate 123 but does not penetrate the second connection plate 123. The second connection part 120 has a simple structure and low processing difficulty, which is conducive to improving production efficiency.

[0043] In a possible implementation, the second connection portion 120 further includes a third connection arm 124 disposed in the first soldering notch 101 , and the third connection arm 124 extends along the length direction Y of the second connection portion 120 and partially blocks the first soldering notch 101 .

[0044] In this embodiment, the specific configuration of the second connection part 120 is further optimized. Specifically, the second connection part 120 is configured as a composite component including at least a first connection plate 122, a first buffer protrusion 121, a second connection plate 123 and a third connection arm 124. The third connection arm 124 can be a plate-like structure, which is configured at the opening of the first soldering notch 101 to enhance the welding strength at the first soldering notch 101 and improve the soldering reliability between the second connection part 120 and the main control board 300. Two third connection arms 124 can be provided, and the two third connection arms 124 are mutually embraced to form a blocking structure at the opening of the first soldering notch 101, so as to further enhance the soldering strength and soldering reliability of the second connection part 120 and improve the connection tightness between the first hardware 100 and the main control board 300.

[0045] In a possible implementation, the first buffer protrusion 121 protrudes toward the first connection portion 110. In this way, the first buffer protrusion 121 can be arranged inside the main control board 300 and the battery cell 20 to prevent it from protruding outward, so that the internal components of the battery are compactly arranged, the occupied space is reduced, and the miniaturization of the battery is promoted.

[0046] In a possible implementation manner, a second buffer protrusion (not shown in the figure) is further provided on the second connection portion 120 , and the second buffer protrusion is located on a side of the first buffer protrusion 121 away from the first connection portion 110 .

[0047] In this embodiment, the specific configuration of the second connection part 120 is further optimized. Specifically, the second connection part 120 is configured as a composite component including at least a first buffer protrusion 121 and a second buffer protrusion, and the second buffer protrusion can be a bent plate-shaped structure, so as to at least increase the ductility and tensile tear resistance of the first connection part 110 in its height direction Z in terms of quantity.

[0048] In one example, the bending direction of the second buffer protrusion can be the same as the bending direction of the first buffer protrusion 121, and both protrude into the main control board 300. In this way, the second buffer protrusion can be prevented from being exposed from the main control board 300, and the space occupied by the second connection part 120 in the lateral direction can be reduced. Of course, the bending direction of the second buffer protrusion can also be opposite to the bending direction of the first buffer protrusion 121, one protrudes into the main control board 300, and the other protrudes out of the main control board 300. In this way, the buffering performance of the second connection part 120 is further enhanced through the staggered bending buffer structure.

[0049] In a possible implementation, the first connection portion 110 includes a first welding plate 111 and a second welding plate 112 , and the first welding plate 111 and the second welding plate 112 are spaced apart along a length direction Y of the second connection portion 120 .

[0050] In this embodiment, the specific configuration of the first connection part 110 is optimized. Specifically, the first connection part 110 is configured as a composite component including at least a first welding plate 111 and a second welding plate 112, the first welding plate 111 can be a square nickel sheet, the second welding plate 112 can be a square nickel sheet, and the first welding plate 111 and the second welding plate 112 are connected through the second connection part 120. In this way, the tin stacking welding between the first connection part 110 and the battery cell 20 is achieved through the first welding plate 111 and the second welding plate 112, ensuring that a large current can pass between the first hardware 100 and the battery cell 20, avoiding problems such as impedance and temperature rise caused by laser welding, and improving the welding effect. In addition, compared with the traditional circular plate structure, the square welding plate provided in this embodiment generates less waste during the punching process, has low processing difficulty, and low production cost.

[0051] In a possible embodiment, the second hardware 200 includes a third connecting portion 210 and a fourth connecting portion 220 arranged at an angle, the third connecting portion 210 is used to be welded to the second electrode of the battery cell 20, the fourth connecting portion 220 is used to be connected to the main control board 300, and the fourth connecting portion 220 is provided with a third buffer protrusion 221, and the third buffer protrusion 221 is located between the battery cell 20 and the main control board 300.

[0052] In this embodiment, the specific configuration of the second hardware 200 is optimized. Specifically, the second hardware 200 is configured as a composite component including at least a third connection part 210 and a fourth connection part 220. The third connection part 210 can be a plate-like structure, which can be connected to the negative electrode of the battery cell 20 by tin welding or the like. The fourth connection part 220 can be a long strip with a bend, which can be vertically connected to the outer edge of the third connection part 210. The third buffer protrusion 221 is located between the main control board 300 and the positive electrode of the battery cell 20 to form a bend buffer space between the two. In this way, the buffering performance of the second hardware 200 can be enhanced at least in the height direction Z of the fourth connection part 220, thereby avoiding the occurrence of pulling, tearing, and breaking of the second hardware 200 due to the misalignment of the main control board 300 and the battery cell 20 during vibration, thereby extending the service life of the second hardware 200. The second via hole 302 may be a square hole, the aperture of which is slightly larger than the size of the fourth connection part 220, so that the fourth connection part 220 can pass through the second via hole 302. The fourth connection part 220 and the main control board 300 can also be welded by a tin material subsequently placed on the top of the fourth connection part 220 and above the second via hole 302 to enhance the connection tightness between the two. At this time, the third buffer protrusion 221 arranged below the second via hole 302 can effectively prevent the tin material from flowing along the fourth connection part 220 to the battery cell 20, avoiding the occurrence of tin leakage, thereby improving the soldering effect between the second hardware 200 and the main control board 300 and improving the safety of the battery.

[0053] In one example, the length of the fourth connection portion 220 is greater than the length of the third connection portion 210, and the fourth connection portion 220 is disposed at the middle position of the outer side of the third connection portion 210. To improve assembly efficiency, the third connection portion 210 and the fourth connection portion 220 can be integrally formed. Of course, in other embodiments, for ease of processing, the third connection portion 210 and the fourth connection portion 220 can be formed separately and then connected together by welding or the like. In addition, the third buffer protrusion 221 on the fourth connection portion 220 can be formed by bending with a bending jig.

[0054] In a possible implementation, the fourth connection portion 220 is further provided with a second soldering notch 201, and the second soldering notch 201 is located on a side of the fourth connection portion 220 away from the third connection portion 210. In this configuration, the second soldering notch 201 can provide a storage space for excess solder, thereby avoiding the occurrence of solder bumps between the fourth connection portion 220 and the main control board 300, thereby improving the tinning reliability between the fourth connection portion 220 and the main control board 300. For example, but not limited to, the second soldering notch 201 can be a trapezoidal notch, with its short side facing the third buffer protrusion 221.

[0055] In a possible implementation, a fourth buffer protrusion 222 is further provided on the fourth connection portion 220 , and the fourth buffer protrusion 222 is located between the third buffer protrusion 221 and the third connection portion 210 .

[0056] In this embodiment, the fourth connecting portion 220 is configured as a combined component including at least a third buffer protrusion 221 and a fourth buffer protrusion 222. The fourth buffer protrusion 222 can be a bent plate-like structure to at least increase the ductility and tensile and tear resistance of the fourth connecting portion 220 in its height direction Z in quantity.

[0057] In one example, the bending direction of the fourth buffer protrusion 222 is opposite to that of the third buffer protrusion 221, and it is arranged to protrude outward. In this way, the fourth buffer protrusion 222 can be prevented from squeezing the battery cell 20 and causing damage to the battery cell 20, thereby improving the service life of the battery.

[0058] In one example, a fifth buffer protrusion (not shown) is further provided on the fourth connection portion 220, and the fifth buffer protrusion is arranged between the main control board 300 and the positive electrode of the battery cell 20, so as to at least increase the buffering performance of the fourth connection portion 220 in its height direction Z in terms of quantity. The protruding direction of the fifth buffer protrusion can be the same as the protruding direction of the third buffer protrusion 221, and both protrude into the main control board 300, so that the fifth buffer protrusion can be prevented from being exposed from the main control board 300, and the space occupied by the fourth connection portion 220 in the lateral direction can be reduced. Of course, the bending direction of the fifth buffer protrusion can also be opposite to the bending direction of the third buffer protrusion 221, one protruding into the main control board 300, and the other protruding out of the main control board 300, so that the buffering performance of the second connection portion 120 can be further enhanced through the staggered bending buffer structure.

[0059] In addition, see Figure 1 , Figure 2 and Figure 6 The present application also provides a battery, which includes: a shell 10 having a accommodating cavity; at least one battery cell 20, disposed in the shell 10, the battery cell 20 including a first electrode and a second electrode; and a battery packaging assembly as described above, wherein the first hardware 100 of the battery packaging assembly is electrically connected between the first electrode and the main control board 300 of the battery packaging assembly, and the second hardware 200 of the battery packaging assembly is electrically connected between the second electrode and the main control board 300.

[0060] In this embodiment, the battery is configured as a composite component including at least a shell 10, at least one battery cell 20 and a battery packaging assembly. The shell 10 can be a box-shaped structure that is approximately a cube, and the battery cell 20 can be a cylindrical battery cell. The battery packaging assembly includes a main control board 300, a first hardware 100 and a second hardware 200, so as to achieve electrical conduction and connection tightening between the main control board 300 and the first end of the battery cell 20 through the first hardware 100 connected between the first electrode of the battery cell 20 and the first via 301 of the main control board 300, and at the same time, achieve electrical conduction and connection tightening between the main control board 300 and the second end of the battery cell 20 through the second hardware 200 connected between the second via 302 of the main control board 300 and the second electrode of the battery cell 20. In this way, the main control board 300 and the battery cell 20 are electrically connected through the first hardware 100 and the second hardware 200, and the battery charging and discharging process is realized; at the same time, the main control board 300 and the battery cell 20 are mechanically connected through the first hardware 100 and the second hardware 200, thereby enhancing the connection stability and reliability between the main control board 300 and the battery cell 20. Specifically, by adding the first buffer protrusion 121 to the second connection part 120 of the first hardware 100, the ductility and buffering performance between the main control board 300 and the battery cell 20 are enhanced, and the pulling, tearing and breaking of the first hardware 100 caused by the relative movement of the main control board 300 and the battery cell 20 during the battery vibration process is avoided, thereby extending the service life of the first hardware 100, improving the stability and reliability of the battery, and improving the overall performance of the battery.

[0061] Moreover, the specific structure of the battery packaging assembly refers to the above-mentioned embodiments. Since the battery adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here. When used specifically, the battery packaging assembly can be applied to both cylindrical battery cell structures and plate-shaped battery cell structures or soft-pack batteries, with a wide range of applications, low production costs, and strong structural reliability.

[0062] In a possible embodiment, two battery cells 20 are provided, two first vias 301 and one second via 302 are provided on the main control board 300, the two first vias 301 are located on opposite sides of the second via 302, two first hardware parts 100 are provided, one first hardware part 100 is provided corresponding to one battery cell 20 and one first via 301; one second hardware part 200 is provided, the second hardware part 200 includes two third connecting parts 210 and one fourth connecting part 220, the two third connecting parts 210 are connected to the bottom end of the fourth connecting part 220 along the radial direction of the battery cell 20, and are respectively welded to the second electrodes of the two battery cells 20; the fourth connecting part 220 extends along the axial direction of the battery cell 20 and is plugged into the second via 302.

[0063] In particular, the battery packaging assembly provided in this embodiment is suitable for the packaging design of n-series and n-parallel cylindrical cells 20. The specific composition of the battery and the relative position relationship and connection relationship between the components are now described by taking the case of setting two cells 20. Of course, it also includes the case of setting multiple cells 20 in the battery. In this case, the specific composition of the battery and the relative position relationship and connection relationship between the components can be reasonably deduced with reference to this embodiment, and will not be elaborated on here.

[0064] Specifically, two battery cells 20 are arranged side by side. At this time, a first via hole 301 is respectively arranged on the left and right sides of the main control board 300, and a second via hole 302 is arranged on the middle front side of the main control board 300. The straight line where the second via hole 302 extends is perpendicular to the straight line where the first via hole 301 extends. Two first hardware parts 100 are arranged, and one first hardware part 100 corresponds to one first via hole 301; the second connection part 120 of the first hardware part 100 is perpendicular to the first connection part 110 and forms a negative angle, and the negative angles of the two first hardware parts 100 are arranged oppositely; the first connection part 110 can be connected to the positive electrode of the battery cell 20 by welding or the like, and the second connection part 120 is inserted into the first via hole 301 and then connected to the main control board 300 by welding or the like; the first buffer protrusion 121 protrudes toward the negative angle and is located between the positive electrode of the battery cell 20 and the main control board 300. The second hardware 200 is provided with a second hardware 200 corresponding to the second through hole 302; the second hardware 200 includes a fourth connection part 220 and two connected third connection parts 210, the fourth connection part 220 can be vertically connected to the outer edge of the connection between the two third connection parts 210 by welding or the like; the third connection part 210 can be connected to the negative electrode of the battery cell 20 by tin stacking welding or the like; the fourth connection part 220 is arranged at the connection between the two battery cells 20 and extends along the axial direction of the battery cell 20, and its top end is inserted into the second through hole 302 and then connected to the main control board 300 by welding or the like; the third buffer protrusion 221 protrudes toward the gap between the main control board 300 and the positive electrode of the battery cell 20, and is located between the main control board 300 and the positive electrode of the battery cell 20, so as to enhance the buffering performance and tensile and tearing resistance of the fourth connection part 220 in its height direction Z; the fourth buffer protrusion 222 protrudes in the direction away from the battery cell 20, and can be configured at the middle position of the fourth connection part 220, so as to further enhance the buffering performance and tensile and tearing resistance of the fourth connection part 220 in its height direction Z.

[0065] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0066] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0067] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A battery packaging assembly, characterized in that: include: Main control board; A first hardware component includes a first connecting portion and a second connecting portion arranged at an angle, wherein the first connecting portion is electrically connected to a first electrode of the battery cell, the second connecting portion is electrically connected to the main control board, and a first buffer protrusion is provided on the second connecting portion, and the first buffer protrusion is located between the battery cell and the main control board; as well as The second hardware is electrically connected to the second electrode of the battery cell and the main control board.

2. The battery packaging assembly according to claim 1, characterized in that: The second connecting portion is provided with a first soldering notch, and the first soldering notch is located at a side of the second connecting portion away from the first connecting portion.

3. The battery packaging assembly according to claim 2, characterized in that: The second connecting portion also includes a first connecting plate and a second connecting plate, the first connecting plate is connected between the first connecting portion and the first buffer protrusion, the second connecting plate is connected to a side of the first buffer protrusion away from the first connecting plate, the first connecting plate is parallel to the second connecting plate, and the first soldering notch is arranged on a side of the second connecting plate away from the first buffer protrusion.

4. The battery packaging assembly according to claim 3, characterized in that: The second connecting portion further includes a third connecting arm disposed in the first soldering notch. The third connecting arm extends along the length direction of the second connecting portion and partially blocks the first soldering notch.

5. The battery packaging assembly according to claim 1, characterized in that: The first buffer protrusion protrudes toward the first connecting portion.

6. The battery packaging assembly according to claim 5, characterized in that: A second buffer protrusion is also provided on the second connecting portion, and the second buffer protrusion is located on a side of the first buffer protrusion away from the first connecting portion.

7. The battery packaging assembly according to claim 1, characterized in that: The first connection portion includes a first welding plate and a second welding plate, and the first welding plate and the second welding plate are spaced apart along a length direction of the second connection portion.

8. The battery packaging assembly according to claim 1, characterized in that: The second hardware includes a third connecting portion and a fourth connecting portion arranged at an angle, the third connecting portion is used to be welded to the second electrode of the battery cell, the fourth connecting portion is used to be connected to the main control board, a third buffer protrusion is provided on the fourth connecting portion, and the third buffer protrusion is located between the battery cell and the main control board.

9. The battery packaging assembly according to claim 8, characterized in that: The fourth connecting portion is also provided with a second soldering notch, and the second soldering notch is located at a side of the fourth connecting portion away from the third connecting portion.

10. The battery packaging assembly according to claim 8, characterized in that: The fourth connecting portion is further provided with a fourth buffer protrusion, and the fourth buffer protrusion is located between the third buffer protrusion and the third connecting portion.

11. A battery, characterized in that: include: A housing having a receiving cavity; At least one battery cell is disposed in the housing, the battery cell comprising a first electrode and a second electrode; as well as The battery packaging assembly as described in any one of claims 1 to 10, wherein the first hardware of the battery packaging assembly is electrically connected between the first electrode and the main control board of the battery packaging assembly, and the second hardware of the battery packaging assembly is electrically connected between the second electrode and the main control board.

12. The battery according to claim 11, characterized in that There are two battery cells, two first vias and one second via on the main control board, the two first vias are located on opposite sides of the second via, there are two first hardware pieces, one first hardware piece corresponds to one battery cell and one first via; there is one second hardware piece, the second hardware piece includes two third connecting parts and one fourth connecting part, the two third connecting parts are connected to the bottom end of the fourth connecting part along the radial direction of the battery cell, and are respectively welded to the second electrodes of the two battery cells; the fourth connecting part extends along the axial direction of the battery cell and is plugged into the second via.

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