Battery and electric equipment

Abstract

The present invention relates to the technical field of battery structures, and discloses a battery and electric equipment, the battery comprises: a box body, a plurality of battery units are installed in the box body, an expansion beam is arranged between two adjacent battery units, and a suspension point structure assembly is installed on the expansion beam; the integrated busbar comprises a connecting bar which strides over the expansion beam to electrically connect the two adjacent battery units, the connecting bar is provided with an avoiding groove for avoiding the lifting point structure assembly, the lifting point structure assembly can penetrate out of the avoiding groove in the Z direction, and the Z direction is the height direction of the box body; the two opposite ends of the connecting row are provided with first pier thinning areas used for being connected with battery cells of the battery units in a welded mode. According to the battery and the electric equipment, the battery can be hoisted more easily, and the structural strength of the integrated busbar can be improved.

Description

Technical Field

[0001] This invention relates to the field of battery structure technology, and in particular to a battery and electrical device. Background Technology

[0002] Existing batteries typically have expansion beams to mitigate the expansion between adjacent cell groups, thereby ensuring battery safety. However, these expansion beams affect the hoisting position of the enclosure, and the hoisting position may conflict with the integrated busbar.

[0003] For larger batteries, hoisting becomes more complicated. The excessive distance between the lifting lugs on both sides makes the battery frame prone to tipping over or deforming during hoisting, significantly impacting assembly efficiency. Furthermore, due to the larger battery size, the integrated busbar becomes longer, and its strength may not meet assembly requirements. The integrated busbar is not only prone to bending and deformation during assembly, but there is also a risk of breakage at the top of the expansion beam due to cell expansion deformation.

[0004] In view of this, there is a need to design a battery and electrical equipment that makes it easier to hoist the battery and helps to improve the structural strength of the integrated busbar.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Summary of the Invention

[0006] This invention provides a battery and electrical equipment that makes it easier to hoist the battery and improves the structural strength of the integrated busbar.

[0007] To achieve the above objectives, in a first aspect, the present invention provides the following technical solution: A battery comprising: The housing contains multiple battery units, with an expansion beam between two adjacent battery units and a suspension point structure assembly mounted on the expansion beam. An integrated busbar includes a connecting busbar that spans the expansion beam to electrically connect two adjacent battery cells. The connecting busbar has a clearance groove that avoids the suspension point structure assembly. The suspension point structure assembly can pass through the clearance groove in the Z direction, where the Z direction is the height direction of the housing. Each of the two opposite ends of the connecting bar is provided with a first thin-walled area for welding connection with the battery cell of the battery unit.

[0008] Optionally, the integrated busbar includes an insulating tray; The insulating tray is provided with a through positioning hole whose shape matches the connecting bar, and the insulating tray also includes a support portion extending into the through positioning hole to support the connecting bar; The support portion is provided with a positioning post, and the connecting row is provided with a positioning through hole corresponding to the positioning post. The connecting row is installed in the through positioning hole by the cooperation of the positioning post and the positioning through hole, and the support portion avoids the first pier thin area. The support portion is provided at both ends of the through positioning hole along the X direction, so that the connecting row is limited and installed at both ends of the connecting row along the X direction. The positioning through holes on the connecting row are spaced apart from the first pier thin area along the Y direction, and the X direction is perpendicular to the Y direction.

[0009] Optionally, a second thin block area is also provided on the connecting row; The integrated busbar also includes a flexible circuit board, which is connected to the second thin-walled area via a connecting nickel sheet to detect information about the battery cell; The second thin pier area and the first thin pier area are spaced apart along the Y direction.

[0010] Optionally, the connecting strip includes a first connecting portion, a second connecting portion, and a third connecting portion, wherein the first connecting portion and the second connecting portion are disposed opposite to each other and connected on the same side by the third connecting portion to form the clearance groove; Both the first connecting portion and the second connecting portion extend along the Y direction, and at least one of the first connecting portion and the second connecting portion is provided with both the first thinning area and the positioning through hole; the first thinning area extends to the edge of the first connecting portion and the second connecting portion away from the avoidance groove. The second thin section extends away from the clearance groove to the outer edge of the connecting row to connect with the connecting nickel sheet extending along the X direction.

[0011] Optionally, the middle position of the third connection portion is provided with a recessed buffer arch groove on the side of the battery cell along the Z direction.

[0012] Optionally, the outer surface of some of the connecting bars is covered with an insulating protective layer; The insulating protective layer wraps around the buffer arch groove and avoids the first thin pier area, the second thin pier area, and the positioning through hole.

[0013] Optionally, the flexible circuit board has a through slot to avoid the connecting row, and the flexible circuit board has an elongated waist-shaped hole to avoid the multiple cell explosion-proof valves of the battery unit.

[0014] Optionally, the width of the third connecting portion is greater than the width of the first connecting portion and the second connecting portion, and the third connecting portion is connected to the first connecting portion and the second connecting portion respectively through a chamfered connecting portion, the width of which is greater than the width of the first connecting portion and the second connecting portion.

[0015] Optionally, the second thinning zone is disposed on the chamfered connection portion.

[0016] Secondly, the present invention provides the following technical solutions: An electrical device comprising a battery as described in the first aspect.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The battery and electrical equipment provided by this invention, on the one hand, have a lifting point structure component installed on the expansion beam of the casing, and on the other hand, cleverly incorporate a connecting bar structure in the integrated busbar. This allows the connecting bar to avoid the lifting point structure component through a clearance groove, and the connecting bar effectively enhances the strength of the central connecting structure of the integrated busbar while enabling normal welding connection between two adjacent battery cells. Therefore, the lifting point structure component installed on the expansion beam reduces the difficulty of lifting and simplifies the process of lifting the casing. The connecting bar avoids assembly interference problems between the integrated busbar and the lifting point structure component, and also helps to improve the strength of the central structure of the integrated busbar.

[0018] The present invention has other features and advantages, which will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view schematic diagram of the integrated busbar provided in an embodiment of the present invention; Figure 2 yes Figure 1 An enlarged schematic diagram of the integrated busbar at position A; Figure 3 This is an exploded view of the integrated busbar provided in an embodiment of the present invention; Figure 4 yes Figure 3Enlarged schematic diagram of the integrated busbar at position B; Figure 5 This is a top view of the connecting bar provided in an embodiment of the present invention; Figure 6 yes Figure 5 Side view of the central connecting row; Figure 7 yes Figure 5 A three-dimensional structural diagram of the central connecting row; Figure 8 This is a partial structural schematic diagram of the battery provided in an embodiment of the present invention; Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure of the middle battery along line AA; Figure 10 This is a side view schematic diagram of another connecting row provided in an embodiment of the present invention; Figure 11 This is a top view of the 10 connecting rows; Figure 12 This is a side view of the third type of connecting bar provided in this embodiment.

[0021] Reference numerals: 10, box body; 101, expansion beam; 102, lifting point structure component; 20, connecting nickel sheet; 1, integrated busbar; 11, connecting busbar; 111, clearance groove; 112, first thin section; 113, second thin section; 114, insulating protective layer; 1141, buffer arch groove; 12, insulating tray; 121, through positioning hole; 122, support part; 123, positioning post; 13, double-layer circuit board; 1301, through groove; 31, first connecting part; 32, second connecting part; 33, third connecting part; 13001, elongated waist-shaped hole; 331, chamfered connecting part. Detailed Implementation

[0022] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0023] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0024] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0025] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0026] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0027] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0028] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0029] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0030] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0031] Example 1 In view of the shortcomings of existing batteries, the applicant, based on years of extensive practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a solution to the shortcomings of existing technologies and make batteries more practical. After continuous research, design, and repeated prototype production and improvement, this invention with real practical value was finally created.

[0032] Please refer to Figures 1 to 9 This invention provides a battery, comprising: a housing 10, wherein multiple battery cells are installed inside the housing 10, an expansion beam 101 is provided between two adjacent battery cells, and a suspension point structure assembly 102 is installed on the expansion beam 101; an integrated busbar 1, including a connecting busbar 11 that spans the expansion beam 101 to electrically connect two adjacent battery cells, the connecting busbar 11 having a clearance groove 111 for avoiding the suspension point structure assembly 102, the suspension point structure assembly 102 being able to pass through the clearance groove 111 along the Z direction, the Z direction being the height direction of the housing 10; and a first thinning area 112 for welding connection with the battery cell of the battery cell is provided at both opposite ends of the connecting busbar 11.

[0033] In this embodiment, the battery features a lifting point structure assembly 102 mounted on the expansion beam 101 of the housing 10, with the assembly fixedly connected to the beam 101. Furthermore, the integrated busbar 1 cleverly incorporates a connecting row 11, allowing it to bypass the lifting point structure assembly 102 via a clearance groove 111. The connecting row 11 effectively enhances the strength of the central connecting structure of the integrated busbar 1 and enables normal welding of adjacent battery cells. It should be noted that the connecting row 11 can connect cells from different battery units, thus achieving connection between different battery units on both sides of the expansion beam 101. Therefore, the installation of the lifting point structure assembly 102 on the expansion beam 101 reduces the difficulty of lifting and simplifies the process of lifting the housing 10. The structural design of the connecting row 11 avoids assembly interference between the integrated busbar 1 and the lifting point structure assembly 102, and also helps improve the strength of the central structure of the integrated busbar 1. It should also be noted that the integrated busbar 1 can be hoisted through the connecting busbar 11, which facilitates the installation of the integrated busbar 1. Furthermore, the connecting busbar 11 significantly improves the integrated busbar 1's resistance to deformation. After the battery cell expands and deforms, the connecting busbar 11 is not easily deformed, resulting in higher structural strength.

[0034] Optionally, the integrated busbar 1 includes an insulating tray 12; the insulating tray 12 is provided with a through positioning hole 121 whose shape matches that of the connecting busbar 11, and the insulating tray 12 also includes a support portion 122 extending into the through positioning hole 121 to support the connecting busbar 11; the connecting busbar 11 is installed in the through positioning hole 121 and supported by the support portion 122, thereby achieving positioning installation, speeding up the installation of the connecting busbar 11, and reducing the installation difficulty of the connecting busbar 11.

[0035] The support part 122 is provided with a positioning post 123, and the connecting strip 11 is provided with a positioning through hole 1101 corresponding to the positioning post 123. The connecting strip 11 is installed at the through positioning hole 121 by the cooperation of the positioning post 123 and the positioning through hole 1101, and the support part 122 avoids the first thin area 112. The setting of the positioning post 123 and the positioning through hole 1101 allows the connecting strip 11 to be fixed by hot riveting through the positioning post 123 while being positioned and installed, which effectively limits the displacement of the connecting strip 11 in the horizontal and vertical directions, and further improves the positioning accuracy and installation stability of the connecting strip 11.

[0036] Support portions 122 protrude from both ends of the through positioning hole 121 along the X direction, so that both ends of the connecting strip 11 along the X direction are limited and installed on the support portions 122, making the installation of the connecting strip 11 more stable and reliable, and avoiding warping of the connecting strip caused by unilateral support. The positioning through holes 1101 on the connecting strip 11 are spaced apart from the first pier thin area 112 along the Y direction, and the X direction and Y direction are perpendicular to each other. Figure 5In this embodiment, the X direction refers to the length direction of the insulating tray 12, that is, the direction from left to right; the Y direction refers to the width direction of the insulating tray 12, that is, the direction from top to bottom.

[0037] Optionally, the connecting busbar 11 is further provided with a second thin-plate area 113; the integrated busbar 1 also includes a flexible circuit board 13, which is connected to the second thin-plate area 113 via a connecting nickel strip 20 to detect information of the battery cell; it should be noted that the connecting nickel strip 20 can be used to detect information such as voltage, current, and temperature of the battery cell. The second thin-plate area 113 and the first thin-plate area 112 are spaced apart along the Y direction. Preferably, a positioning through hole 1101 is provided between the second thin-plate area 113 and the first thin-plate area 112 along the Y direction. The positioning through hole 1101 is located between the two thin-plate areas, so that the positioning force points of the connecting busbar 11 are centrally distributed, avoiding installation tilt caused by unilateral weight imbalance, further improving positioning stability. At the same time, it avoids the second thin-plate area (the connecting end of the flexible circuit board) and the first thin-plate area, preventing the positioning structure from conflicting with the detection connection part and the key conductive area, ensuring the accuracy of battery cell information detection and circuit conduction stability.

[0038] It should be noted that during installation, the connecting strip 11 can be hot-riveted to the through positioning hole 121 (the positioning post 123 passes through the positioning through hole 1101), and then the second thinning area 113 and the first thinning area 112 are welded together to achieve the welding connection between the connecting strip 11 and the battery cell electrode post, as well as the welding connection between the connecting strip 11 and the connecting nickel sheet 20. The positioning through hole 1101 is located between the second thinning area 113 and the first thinning area 112. The connecting strip 11 can be hot-riveted to prevent welding displacement, improve welding alignment accuracy, and reduce the difficulty of welding operation. At the same time, it avoids the welding area, achieves physical isolation of the welding area, reduces the impact of heat, avoids the structure formed by hot riveting from softening and failing due to high temperature, and avoids the material around the positioning hole from deforming due to heat, ensuring long-term stability of positioning accuracy. In addition, it can prevent welding stress from being transmitted to the positioning hole area, which could lead to deformation of the positioning hole or loosening of the hot riveting post joint.

[0039] In the Y direction, the positioning post 123 and the positioning through hole 1101 provide multi-point fixation. Their combination ensures both the installation stability of the connecting strip 11 and the reliability of the electrical connection. It also guarantees the reliable connection between the second thin section 113 and the connecting nickel sheet 20, reducing the risk of tearing of the connecting nickel sheet 20. In the X direction, the two positioning holes 121 and the two first thin sections 112 are symmetrically arranged, enabling bidirectional fixation through hot riveting and welding. This reduces the risk of warping and deformation of the connecting strip, ensures good fit with the battery cell and connecting nickel sheet, and improves the stability of conductive transmission and signal acquisition.

[0040] Optionally, the connecting strip 11 includes a first connecting portion 31, a second connecting portion 32, and a third connecting portion 33. The first connecting portion 31 and the second connecting portion 32 are arranged opposite to each other and connected on the same side by the third connecting portion 33 to form a clearance groove 111. The first connecting portion 31 and the second connecting portion 32 extend symmetrically and are connected by the third connecting portion 33, making the current conduction path more regular, reducing processing difficulty and cost. At the same time, the U-shaped structure of the clearance groove 111 can increase the flexibility of the connecting strip 11 in the X direction, helping to buffer the expansion force of the battery cell, forming a double buffer with the buffer arch groove. Meanwhile, the lifting point structure assembly is installed on the expansion beam, which allows the lifting force to be directly transmitted to the expansion beam, avoiding uneven stress on the box or battery cell during lifting.

[0041] Both the first connecting portion 31 and the second connecting portion 32 extend along the Y direction, and at least one of the first connecting portion 31 and the second connecting portion 32 is simultaneously provided with a first thinning area 112 and a positioning through hole 1101; the first thinning area 112 extends to the edge of the first connecting portion 31 and the second connecting portion 32 away from the avoidance groove 111, which does not affect the avoidance function and ensures the structural rationality of the key conductive area. In this embodiment, as Figure 7 As shown, the first connecting part 31 is provided with a first thin area 112 and a positioning through hole 1101, and the second connecting part 32 is provided with a first thin area 112 and a positioning through hole 1101.

[0042] The second thin section 113 extends away from the clearance groove 111 to the outer edge of the connecting strip 11, so as to connect with the connecting nickel sheet 20 extending in the X direction. In this embodiment, the second thin section 113 can be reasonably set on the first connecting part 31 or the second connecting part 32 according to the position of the connecting nickel sheet 20 during the installation process. In addition, the extension directions of the connecting nickel sheet 20 and the second thin section 113 will not affect the clearance groove 111 and will not interfere with the normal assembly of the lifting point structure component 102.

[0043] Optionally, a recessed buffer arch groove 1141 is provided at the middle position of the third connection part 33 along the Z direction near the battery cell. It should be noted that the battery cell will expand at the end of its life. The connection bar 11 is welded to the battery cell and will be dragged and stretched by the battery cell. The design of the buffer arch groove 1141 can reserve the stretching allowance after expansion and reduce the risk of stress concentration and fracture at this point.

[0044] Optionally, the outer surface of part of the connecting row 11 is covered with an insulating protective layer 114; the insulating protective layer 114 covers the buffer arch groove 1141 and avoids the first pier thin area 112, the second pier thin area 113 and the positioning through hole 1101, so as to avoid affecting the positioning and connection.

[0045] The insulating protective layer 114 can insulate and separate the connecting strip 11 and the lifting point structure components, and can effectively prevent leakage and short circuit accidents caused by the connecting strip 11. Optionally, the insulating protective layer 114 can wrap around the third connecting part 33, as well as the side wall of the first connecting part 31 and the second connecting part 32 facing the avoidance groove 111 and extending to the upper and lower surfaces of the first connecting part 31 and the second connecting part 32, so as to fully improve the insulation performance and prevent the connecting strip 11 from contacting the lifting point structure components, causing a short circuit risk. At the same time, after the insulating protective layer 114 wraps the buffer arch groove 1141, it can reduce the erosion of the arch groove area by external dust, moisture, electrolyte residue, etc., while enhancing the wear resistance and corrosion resistance of the overall structure of the connecting strip 11, adapting to harsh working environments, and reducing mechanical wear between the arch groove area and surrounding components. In this embodiment, the insulating protective layer 114 can be formed by dipping in powder and then cutting or by spraying insulating particles to cover and avoid key functional areas such as the first thin area 112, the second thin area 113 and the positioning through hole 1101. This ensures the integrity of the insulating protective layer 114 without affecting the connection, detection and positioning functions, and has strong process adaptability.

[0046] The thickness of the first thin section 112 and the second thin section 113 is between 20% and 60% of the thickness of the connecting strip 11. This satisfies both the functional requirements of welding the connecting nickel sheet and conducting electrical transmission, as well as the strength requirements. It avoids problems such as insufficient structural strength due to excessive thickness, increased resistance due to insufficient cross-sectional area, affecting energy transmission efficiency or causing localized heating, or excessive thickness leading to heat dispersion, incomplete welding or weak welding. This achieves a balance between function and strength.

[0047] The protrusion height of the buffer arch groove 1141 is between 0.5mm and 2mm, and the reserved expansion and stretching allowance is just right. It is neither too small to absorb the maximum expansion of the battery cell, nor too large to occupy too much installation space, thus adapting to the expansion characteristics of the battery cell and the needs of a compact layout.

[0048] The thickness of the insulating protective layer 114 is between 0.2mm and 0.8mm, which is moderate. It can provide a reliable insulating separation effect and resist external environmental interference, without increasing the overall volume of the connecting strip 11 or affecting the assembly and adaptation due to excessive thickness, while reducing material costs.

[0049] Optionally, the flexible circuit board 13 has a through slot 1301 to avoid the connection row 11, thereby adapting to the installation requirements of the connection row 11 and avoiding positional interference between the flexible circuit board 13 and the suspension point structure assembly 102. The flexible circuit board 13 has an elongated waist-shaped hole 13001 to avoid the multiple cell explosion-proof valves of the battery unit, and the gas ejected from the cell thermal runaway can be quickly discharged from the elongated waist-shaped hole 13001.

[0050] Optionally, the width of the third connecting part 33 is greater than the width of the first connecting part 31 and the second connecting part 32. The third connecting part 33 is connected to the first connecting part 31 and the second connecting part 32 respectively through a chamfered connecting part 331. The width of the chamfered connecting part 331 is greater than the width of the first connecting part 31 and the second connecting part 32, thereby effectively improving the current carrying capacity of the connecting bus 11. At the same time, it can also disperse the local heat generation during current transmission. The design of the chamfered connecting part 331 can also avoid stress concentration and further enhance the tensile strength of the connecting bus.

[0051] The second thin section 113 is set on a chamfered connection part 331. The area occupied by the second thin section 113 is small and will not have a significant impact on the structural strength of the chamfered connection part 331, and can effectively meet the connection requirements of the connecting nickel sheet 20.

[0052] It should also be noted that for the connection row 11' that will not conflict with the suspension point structure component 102, the following can be adopted: Figure 10 and Figure 11 Another connecting row 11' of the structure shown has a single arc-shaped groove, which can improve the buffering effect.

[0053] Preferably, to further improve the buffering effect of the buffer arch groove 1141, a third type of connecting row 11” can be set, which has multiple arc-shaped arch grooves to further significantly improve the buffering effect.

[0054] Example 2 This embodiment discloses an electrical device including a battery as described in any of the preceding embodiments.

[0055] Batteries are used to power electrical devices, which can be cars, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, medical devices, and power tools, among others.

[0056] Among them, automobiles can be fuel-powered automobiles, natural gas-powered automobiles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0057] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A battery, characterized in that, include: The housing (10) contains multiple battery units installed inside. An expansion beam (101) is provided between two adjacent battery units, and a suspension point structure assembly (102) is installed on the expansion beam (101). The integrated busbar (1) includes a connecting bar (11) that spans the expansion beam (101) to electrically connect two adjacent battery cells. The connecting bar (11) has a clearance groove (111) that avoids the suspension point structure assembly (102). The suspension point structure assembly (102) can pass through the clearance groove (111) in the Z direction, which is the height direction of the housing (10). The connecting bar (11) has a first thin section (112) on each of its two opposite ends for welding to the cell of the battery unit.

2. The battery according to claim 1, characterized in that, The integrated busbar (1) includes an insulating tray (12); The insulating tray (12) is provided with a through positioning hole (121) whose shape matches the connecting row (11), and the insulating tray (12) also includes a support portion (122) extending into the through positioning hole (121) to support the connecting row (11). The support part (122) is provided with a positioning post (123), and the connecting row (11) is provided with a positioning through hole (1101) corresponding to the positioning post (123). The connecting row (11) is installed in the through positioning hole (121) by the cooperation of the positioning post (123) and the positioning through hole (1101), and the support part (122) avoids the first pier thin area (112). The support portion (122) is provided at both ends of the through positioning hole (121) along the X direction, so that the connecting row (11) is limited and installed at both ends of the support portion (122) along the X direction. The positioning through hole (1101) on the connecting row (11) is spaced apart from the first pier thin area (112) along the Y direction, and the X direction is perpendicular to the Y direction.

3. The battery according to claim 2, characterized in that, A second pier thin zone (113) is also provided on the connecting row (11). The integrated busbar (1) also includes a flexible circuit board (13), which is connected to the second thin area (113) via a connecting nickel sheet (20) to detect information of the battery cell; The second thin block area (113) and the first thin block area (112) are spaced apart along the Y direction.

4. The battery according to claim 3, characterized in that, The connecting bar (11) includes a first connecting part (31), a second connecting part (32) and a third connecting part (33). The first connecting part (31) and the second connecting part (32) are arranged opposite to each other and connected on the same side by the third connecting part (33) to form the clearance groove (111). Both the first connecting portion (31) and the second connecting portion (32) extend along the Y direction, and at least one of the first connecting portion (31) and the second connecting portion (32) is provided with both the first thinning area (112) and the positioning through hole (1101); the first thinning area (112) extends to the edge of the first connecting portion (31) and the second connecting portion (32) away from the relief groove (111); The second thin section (113) extends away from the clearance groove (111) to the outer edge of the connecting row (11) to connect with the connecting nickel sheet (20) extending along the X direction.

5. The battery according to claim 4, characterized in that, The third connecting part (33) has a recessed buffer arch groove (1141) at the middle position along the Z direction on the side close to the battery cell.

6. The battery according to claim 5, characterized in that, The outer surface of some of the connecting bars (11) is covered with an insulating protective layer (114). The insulating protective layer (114) wraps around the buffer arch groove (1141) and avoids the first pier thin area (112), the second pier thin area (113) and the positioning through hole (1101).

7. The battery according to claim 3, characterized in that, The flexible circuit board (13) has a through slot (1301) to avoid the connecting row (11), and the flexible circuit board (13) has an elongated waist-shaped hole (13001) to avoid the multiple cell explosion-proof valves of the battery unit.

8. The battery according to claim 4, characterized in that, The width of the third connecting part (33) is greater than the width of the first connecting part (31) and the second connecting part (32). The third connecting part (33) is connected to the first connecting part (31) and the second connecting part (32) respectively through a chamfered connecting part (331). The width of the chamfered connecting part (331) is greater than the width of the first connecting part (31) and the second connecting part (32).

9. The battery according to claim 8, characterized in that, The second thin section (113) is provided on the chamfered connecting part (331).

10. An electrical appliance, characterized in that, It includes the battery as described in any one of claims 1 to 9.

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