Battery device and electric equipment

Abstract

The utility model provides a battery device and electric equipment. The battery device comprises a battery cell; the pressing strip is fixed relative to the battery monomers, extends along the first direction and comprises a protruding part protruding towards the outer side of the pressing strip along a second direction perpendicular to the first direction, and the thickness direction of the pressing strip is perpendicular to the first direction and the second direction; and the electric connecting piece comprises an electric connecting bar sheet for electrically connecting the two single batteries, the thickness direction of the electric connecting bar sheet is the same as that of the pressing strip, and the electric connecting bar sheet is located on the outer side of the pressing strip in the second direction and comprises an avoiding opening for avoiding the protruding part. According to the battery device, the internal space layout is optimized.

Description

Technical Field

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

[0002] In battery devices of related technologies, when electrical connectors are installed next to the pressure bar, the electrical connectors occupy a large area on one side of the battery cell inside the battery device. If the pressure bar has a protrusion facing the electrical connector, it is difficult to arrange the pressure bar and the adjacent electrical connectors reasonably.

[0003] The above statements are for the purpose of providing background information in relation to this application only, and do not necessarily constitute prior art. Utility Model Content

[0004] The purpose of this application is to provide a battery device and electrical equipment that solves the problem of the difficulty in reasonably arranging the pressure strip and adjacent electrical connectors.

[0005] To achieve the above objectives, a first aspect of this application provides a battery device, comprising: a battery cell; a retaining strip fixed relative to the battery cell and extending along a first direction, including a protrusion protruding outward along a second direction perpendicular to the first direction, the thickness direction of the retaining strip being perpendicular to the first and second directions; and an electrical connector including an electrical connector plate electrically connecting two battery cells, the thickness direction of the electrical connector plate being the same as the thickness direction of the retaining strip, located on the outside of the retaining strip along the second direction, and including a clearance opening to avoid the protrusion.

[0006] The electrical connector, by setting a clearance opening to avoid the protrusion, enables the electrical connector to electrically connect two battery cells without affecting the integrity of the pressure strip structure, which is beneficial for optimizing the internal space layout of the battery device.

[0007] In some embodiments of the battery device, the pressure strip includes a segment with a through hole configured to avoid a mounting member of the battery device, and a protrusion is formed on the outside of the through hole on the segment.

[0008] By setting holes in the pressure strip, and the holes having through holes, the pressure strip can avoid the mounting parts of the battery device, which helps to optimize the internal space layout of the battery device.

[0009] In some embodiments of the battery device, the through-hole is a round hole or a strip-shaped hole.

[0010] Designing the through-hole as a round or strip-shaped hole allows for the selection of different through-hole shapes based on the shape and location of the components that the through-hole needs to avoid, thereby optimizing the internal spatial layout of the battery device. When the through-hole is a strip-shaped hole, it can also provide redundant clearance space for the mounting components, thereby reducing the precision requirements for the positioning of the mounting components.

[0011] In some embodiments of the battery device, the length direction of the strip-shaped hole extends along a second direction.

[0012] By setting the length of the strip hole to extend along the second direction, it is beneficial to provide redundant clearance space for the mount along the second direction, thereby reducing the accuracy requirements for the position setting of the mount.

[0013] In some embodiments of the battery device, the electrical connection bar includes a clearance portion forming a clearance opening, the clearance portion protruding entirely along a second direction toward the side away from the pressure strip.

[0014] By setting the clearance portion to protrude along the second direction away from the pressure strip, the cross-sectional width of the electrical connection bar along its extension direction meets the mechanical and electrical performance requirements. For example, it can keep the cross-sectional width of the electrical connection bar along its extension direction basically consistent, which helps to reduce the risk of increased local impedance and overheating caused by abrupt changes in cross-sectional area, and helps to ensure that the electrical connection bar has sufficient strength, thereby improving the safety of the battery device.

[0015] In some embodiments of the battery device, the electrical connector includes a clearance portion forming a clearance opening, and the electrical connector also includes an insulating layer that covers at least a portion of the clearance portion.

[0016] By setting an insulating layer that covers at least part of the clearance portion, the creepage distance and electrical clearance between the electrical connector and the pressure bar are increased, which helps to reduce the risk of short circuits and arcing caused by insufficient distance between the electrical connector and the pressure bar, thereby improving the safety of the battery device.

[0017] In some embodiments of the battery device, the electrical connection bar also includes a bent section that protrudes along the thickness direction of the electrical connection bar and is configured to buffer stress on the electrical connection.

[0018] By incorporating a bent section that protrudes along the thickness of the electrical connector, the geometry of the bent section transforms stress into deformation of the bent section structure, thereby reducing the risk of electrical connector breakage and improving the safety and lifespan of the battery device.

[0019] In some embodiments of the battery device, the electrical connection bar includes a clearance portion forming a clearance opening, and a bent section is disposed at the middle of the clearance portion along the first direction.

[0020] The mounting component is usually connected to the beam of the battery device. The hole section of the pressure strip and the clearance part of the electrical connection bar are also set on the beam in accordance with the setting position of the beam. The bending section is set in the middle of the clearance part along the first direction. The bending section corresponds to the beam. There will be a large gap between the beam and the bending section. This setting of the bending section is beneficial because it does not occupy the space of the battery device in the thickness direction of the electrical connection bar when setting the bending section. It is also beneficial to set the bending section to have a large deformation space so as to better realize its buffer function.

[0021] In some embodiments of the battery device, the pressure bar has protrusions on both sides along the second direction; two electrical connectors are respectively disposed on both sides of the pressure bar along the second direction.

[0022] By providing protrusions on both sides of the pressure bar along the second direction, and by setting two electrical connectors on both sides of the pressure bar along the second direction, the two electrical connectors on both sides of the pressure bar can electrically connect the two battery cells without affecting the integrity of the pressure bar structure, which is beneficial to optimizing the internal space layout of the battery device.

[0023] The second aspect of this application provides an electrical device that includes a battery device according to the first aspect of this application, the battery device being configured to provide electrical energy to the electrical device.

[0024] The electrical equipment provided in the second aspect of this application has the same advantages as the battery device provided in the first aspect of this application.

[0025] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0027] Figure 1 This is a schematic diagram of the structure of an electrical device according to some embodiments of this application.

[0028] Figure 2 This is a top view of a battery device provided for some embodiments of this application, wherein the battery device cover is not shown.

[0029] Figure 3 for Figure 2 The diagram shows a structural schematic of the combined structure of the battery cell, pressure bar, electrical connector, and mounting component in the battery device.

[0030] Figure 4 for Figure 2 The diagram shows the structure of the electrical connectors in the battery device.

[0031] Figure 5 for Figure 2 The diagram shows the structure of the pressure bar in the battery device.

[0032] Figures 1 to 5 In the figures, the labels represent:

[0033] D. Electrical equipment; B. Battery device; 1. Battery cell; 2. Electrical connector; 21. Electrical connector plate; 211. Clearance section; 2111. Clearance opening; 212. Bending section; 213. Electrical connection end; 214. Positioning hole; 215. Mounting groove; 22. Insulation layer; 3. Pressure strip; 31. Hole section; 311. Through hole; 312. Protrusion; 4. Mounting component; 5. Flexible circuit board; 6. Detection section; 7. Housing; 71. Beam; X. First direction; Y. Second direction. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] In the description of this application, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0037] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] Furthermore, when an element is referred to as being "on" another element, the element may be directly on the other element, or it may be indirectly on the other element with one or more intermediate elements inserted between them. Additionally, when an element is referred to as being "connected" to another element, the element may be directly connected to the other element, or it may be indirectly connected to the other element with one or more intermediate elements inserted between them. In the following drawings, the same reference numerals denote the same elements.

[0039] Unless otherwise required by the content, throughout the following description, the word “including” and its variations, such as “comprising” and “having”, will be interpreted in an open-ended, inclusive sense, that is, as “including but not limited to”.

[0040] In this application, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0041] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] In the process of developing this application, the inventors discovered that in related technologies, when an electrical connector is placed next to the pressure bar of a battery device, the electrical connector occupies a large area on one side of the battery cell inside the battery device. If the pressure bar has a protrusion facing the electrical connector due to the presence of through holes or other structures, it will cause the pressure bar and the adjacent electrical connector to be difficult to arrange reasonably.

[0043] Therefore, this application proposes a battery device in which the electrical connector for electrically connecting two battery cells includes an avoidance opening for the protrusion of the pressure bar, so that the electrical connector can achieve electrical connection of two battery cells without affecting the integrity of the pressure bar structure, which is beneficial to optimizing the internal space layout of the battery device.

[0044] Furthermore, this application also proposes an electrical device that includes the battery device.

[0045] The battery device is configured to provide electrical power to electrical devices. These devices can be, but are not limited to, mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, and power tools. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. 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.

[0046] A battery device is a single physical module that includes one or more battery cells to provide higher voltage and capacity. A battery device typically includes a housing for encapsulating the one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0047] A battery pack is a single physical module composed of multiple battery cells connected in series or parallel, capable of providing higher voltage and capacity. Battery packs can be configured in the form of battery modules. A battery module is a unit comprising multiple battery cells, used to provide higher voltage and capacity. By connecting battery cells in parallel or series to form battery packs, battery modules can meet the power requirements of different applications. Connecting battery cells in series increases the total voltage, while connecting battery cells in parallel increases the total capacity. Battery modules typically also include protective structures to protect the multiple battery cells. These protective structures protect the battery pack from damage caused by the external environment. Protective structures may include, for example, two side plates located on both sides of the battery pack and two end plates located at both ends of the battery pack.

[0048] A battery cell refers to the smallest unit that makes up a battery. In this application, a battery cell may include lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., but this application is not limited to these types. A battery cell may be flat, cuboid, or other shapes, but this application is not limited to these shapes either. Battery cells are generally packaged as square battery cells and pouch battery cells, but this application is not limited to these shapes either.

[0049] In the description of the embodiments of this application, the first direction X is a horizontal direction, corresponding to... Figure 2 The vertical direction, the second direction Y is the horizontal direction perpendicular to the first direction X, corresponding to... Figure 1 The left and right directions.

[0050] like Figure 2 and Figure 5As shown, the battery device B provided in this application embodiment includes: a battery cell 1; a pressure strip 3, which is fixed relative to the battery cell 1 and extends along a first direction X, including a protrusion 312 protruding outward along a second direction Y perpendicular to the first direction X, the thickness direction of the pressure strip 3 being perpendicular to the first direction X and the second direction Y; and an electrical connector 2, including an electrical connector 21 for electrically connecting two battery cells 1, the thickness direction of the electrical connector 21 being the same as the thickness direction of the pressure strip 3, located on the outside of the pressure strip 3 along the second direction Y, and including a clearance opening 2111 for avoiding the protrusion 312.

[0051] The electrical connector 21, by setting a clearance opening 2111 to avoid the protrusion 312, enables the electrical connector 2 to electrically connect two battery cells 1 without affecting the structural integrity of the pressure strip 3, which is beneficial to optimizing the internal space layout of the battery device B.

[0052] like Figure 5 As shown, in some embodiments of the battery device B, the pressure strip 3 includes a hole segment 31, the hole segment 31 having a through hole 311, the through hole 311 being configured to avoid the mounting member 4 of the battery device B, and a protrusion 312 being formed on the outside of the through hole 311 on the hole segment 31.

[0053] By setting a hole segment 31 on the pressure strip 3, and the hole segment 31 having a through hole 311, the pressure strip 3 avoids the mounting part 4 of the battery device B, which is conducive to optimizing the internal space layout of the battery device B.

[0054] like Figure 5 As shown, in some embodiments of the battery device B, the through hole 311 is a round hole or a strip hole.

[0055] The through hole 311 can be configured as a round hole or a strip hole, which allows for the selection of different shapes of through holes 311 based on the shape and position of the components that the through hole 311 needs to avoid, thereby optimizing the internal spatial layout of the battery device B. When the through hole 311 is a strip hole, it can also provide redundant clearance space for the mounting component 4, thereby reducing the precision requirements for the positioning of the mounting component 4.

[0056] like Figure 5 As shown, in some embodiments of the battery device B, the length direction of the strip hole extends along the second direction Y.

[0057] By setting the length of the strip hole to extend along the second direction Y, it is beneficial to provide redundant clearance space for the mount 4 along the second direction Y, thereby reducing the accuracy requirements for the position setting of the mount 4.

[0058] like Figure 3 and Figure 4As shown, in some embodiments of the battery device B, the electrical connection bar 21 includes a clearance portion 211 forming a clearance opening 2111, the clearance portion 211 protruding entirely along the second direction Y toward the side away from the pressure strip 3.

[0059] By setting the clearance portion 211 to protrude along the second direction Y away from the pressure strip 3, it is beneficial for the cross-sectional width of the electrical connection bar 21 along its extension direction to meet the mechanical and electrical performance requirements. For example, it can keep the cross-sectional width of the electrical connection bar 21 along its extension direction basically consistent, which helps to reduce the risk of increased local impedance and overheating caused by abrupt changes in cross-sectional area, and helps to ensure that the electrical connection bar 21 has sufficient strength, thereby improving the safety of the battery device B.

[0060] like Figure 3 and Figure 4 As shown, in some embodiments of the battery device B, the electrical connector 21 includes a clearance portion 211 forming a clearance opening 2111, and the electrical connector 2 also includes an insulating layer 22 that covers at least a portion of the clearance portion 211.

[0061] By providing an insulating layer 22 that covers at least part of the clearance portion 211, the creepage distance and electrical clearance between the electrical connector 2 and the pressure strip 3 are increased, which helps to reduce the risk of short circuits and arcing caused by insufficient distance between the electrical connector 2 and the pressure strip 3, thereby improving the safety of the battery device B.

[0062] like Figure 3 and Figure 4 As shown, in some embodiments of the battery device B, the electrical connection bar 21 further includes a bent section 212 that protrudes along the thickness direction of the electrical connection bar 21 and is configured to buffer the stress of the electrical connector 2.

[0063] By setting a bending section 212, which protrudes along the thickness direction of the electrical connector 21, the stress is converted into deformation of the bending section 212 structure by utilizing the geometry of the bending section 212, thereby reducing the risk of breakage of the electrical connector 2 and improving the safety and service life of the battery device B.

[0064] like Figure 3 and Figure 4 As shown, in some embodiments of the battery device B, the electrical connection bar 21 includes a clearance portion 211 forming a clearance opening 2111, and a bent section 212 is disposed at the middle of the clearance portion 211 along the first direction X.

[0065] The mounting component 4 is usually connected to the beam 71 of the battery device B. The hole section 31 of the pressure strip 3 and the clearance part 211 of the electrical connection bar 21 are also set on the beam 71 corresponding to the setting position of the beam 71. The bending section 212 is set in the middle of the clearance part 211 along the first direction X. The bending section 212 corresponds to the beam 71. There will be a large gap between the beam 71 and the bending section 212. This setting of the bending section 212 is beneficial because it does not occupy the space of the battery device B in the thickness direction of the electrical connection bar 21 when setting the bending section 212. It is also beneficial to set the bending section 212 to have a large deformation space so as to better realize its buffer function.

[0066] like Figure 2 and Figure 3 As shown, in some embodiments of the battery device B, the pressure bar 3 has protrusions 312 on both sides along the second direction Y; two electrical connectors 2 are respectively disposed on both sides of the pressure bar 3 along the second direction Y.

[0067] By providing protrusions 312 on both sides of the pressure strip 3 along the second direction Y, and by setting two electrical connectors 2 on both sides of the pressure strip 3 along the second direction Y, the two electrical connectors 2 on both sides of the pressure strip 3 can electrically connect the two battery cells 1 without affecting the structural integrity of the pressure strip 3, which is beneficial to optimizing the internal space layout of the battery device B.

[0068] like Figure 1 As shown in the figure, this application embodiment also provides an electrical device D, which includes a battery device B according to the present application embodiment, and the battery device B is configured to provide electrical energy to the electrical device D.

[0069] The electrical device D provided in this application embodiment has the same advantages as the battery device B provided in this application embodiment.

[0070] The following combination Figures 1 to 5 A more detailed description of a battery device B according to an embodiment of this application will be provided.

[0071] Battery device B includes a battery box and battery cells 1, pressure strips 3, and electrical connectors 2 disposed within the battery box. The battery box includes a box body 7 and a box cover. A beam 71 is provided inside the box body 7.

[0072] Multiple pressure strips 3 are fixed relative to the battery cell 1 and extend along a first direction X, with adjacent pressure strips 3 spaced apart. Each pressure strip 3 includes a perforated section 31 disposed above the beam 71. A through hole 311 is provided on the perforated section 31. The through hole 311 is a strip-shaped hole extending along a second direction Y (corresponding to the width direction of the pressure strip 3) perpendicular to the first direction X. Protrusions 312 protruding outward from the pressure strip 3 are formed on both sides of the perforated section 31 along the second direction Y, and the thickness direction of the pressure strip 3 is perpendicular to the first direction X and the second direction Y. The mounting member 4 is a mounting bolt, which passes through the through hole 311 and is fixedly connected to the beam 71 below the through hole 311. The electrical connector 2 includes an electrical connector plate 21 and an insulating layer 22.

[0073] The electrical connection tab 21 electrically connects two battery cells 1. The electrical connection tab 21 includes a clearance portion 211, a bent section 212, two electrical connection ends 213, a positioning hole 214, and a mounting groove 215. The thickness direction of the electrical connection tab 21 is the same as the thickness direction of the pressure strip 3, and it is located outside the pressure strip 3 along the second direction Y. Figure 2 As shown, the battery device B includes three pressure strips 3 with holes 31. Both sides of the holes 31 along the second direction Y form protrusions 312. Each side of each hole 31 is provided with an electrical connector 2 with a clearance opening 2111.

[0074] The clearance portion 211 of the electrical connector 2's electrical connector tab 21 forms a clearance opening 2111 to avoid the pressure strip 3. The clearance portion 211 protrudes along the second direction Y towards the side away from the pressure strip 3. In this embodiment, the clearance opening 2111 is an arc-shaped groove recessed towards the side away from the pressure strip 3. The shape of the groove of the clearance opening 2111 can be adjusted according to the specific shape of the protrusion 312. For example, the shape of the groove of the clearance opening 2111 can be square, U-shaped, or triangular. The shape of the edge of the clearance portion 211 away from the clearance opening 2111 is the same as the shape of the edge of the clearance opening 2111, and the cross-sectional width of the clearance portion 211 of the electrical connector tab 21 along its extension direction remains substantially consistent.

[0075] The bent section 212 protrudes along the thickness direction of the electrical connection tab 21 and is configured to buffer the stress of the electrical connection 2. The bent section 212 is disposed between the two electrical connection ends 213. The bent section 212 can be formed by stamping. The bent section 212 is formed at the middle of the relief portion 211 along the first direction X.

[0076] The two electrical connection terminals 213 of the electrical connection plate 21 are respectively connected to two battery cells 1.

[0077] The insulating layer 22 covers the portion of the clearance part 211.

[0078] The positioning hole 214 of the electrical connection bar 21 is configured to position the electrical connection bar 21. For example, the positioning of the electrical connection bar 21 relative to the wire harness isolation plate can be achieved by setting a positioning post on the wire harness isolation plate through the positioning hole 214.

[0079] The battery device B also includes a flexible circuit board 5 and a detection unit 6 connected to the flexible circuit board 5. The detection unit 6 is, for example, a temperature detection unit, which includes, for example, an NTC sensor. The mounting groove 215 is shaped to fit and electrically connected to the end of the detection unit 6 away from the flexible circuit board 5.

[0080] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this application.

Claims

1. A battery device (B) characterized by comprising: include: Battery cell (1); The pressure strip (3) is fixed relative to the battery cell (1) and extends along a first direction (X), including a protrusion (312) protruding outward along a second direction (Y) perpendicular to the first direction (X), wherein the thickness direction of the pressure strip (3) is perpendicular to the first direction (X) and the second direction (Y). The electrical connector (2) includes an electrical connector plate (21) that electrically connects two battery cells (1). The thickness direction of the electrical connector plate (21) is the same as that of the pressure strip (3), and it is located outside the pressure strip (3) along the second direction (Y). It includes a relief opening (2111) that avoids the protrusion (312).

2. The battery device (B) according to claim 1, characterized in that, The pressure strip (3) includes a hole segment (31) with a through hole (311) configured to avoid the mounting member (4) of the battery device (B), and the protrusion (312) is formed on the outside of the through hole (311) on the hole segment (31).

3. The battery device (B) according to claim 2, characterized in that The through hole (311) is a round hole or a strip hole.

4. The battery device (B) according to claim 3, characterized in that The length direction of the strip hole extends along the second direction (Y).

5. The battery device (B) according to claim 1, characterized in that, The electrical connection bar (21) includes a clearance portion (211) forming the clearance opening (2111), the clearance portion (211) protruding along the second direction (Y) to the side away from the pressure strip (3).

6. The battery device (B) according to claim 1, characterized in that The electrical connector (21) includes a clearance portion (211) forming the clearance opening (2111), and the electrical connector (2) further includes an insulating layer (22) covering at least a portion of the clearance portion (211).

7. The battery device (B) according to claim 1, characterized in that The electrical connector (21) further includes a bent section (212) that protrudes along the thickness direction of the electrical connector (21) and is configured to buffer the stress of the electrical connector (2).

8. The battery device (B) according to claim 7, characterized in that The electrical connection bar (21) includes a clearance portion (211) forming the clearance opening (2111), and the bent section (212) is disposed at the middle of the clearance portion (211) along the first direction (X).

9. The battery device (B) according to any one of claims 1 to 8, characterized in that, The pressure strip (3) has protrusions (312) on both sides along the second direction (Y). The two electrical connectors (2) are respectively disposed on both sides of the pressure strip (3) along the second direction (Y).

10. An electric device (D) characterized in that The battery device (B) includes any one of claims 1 to 9, the battery device (B) being configured to provide electrical energy to the electrical equipment (D).

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