Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, the battery pack comprises a plurality of batteries, two pressing plates, a plurality of conductive pieces and at least two leading-out pieces, the plurality of batteries are arranged in sequence, the two pressing plates are arranged on the two opposite sides of the plurality of batteries in the direction perpendicular to the arrangement direction of the plurality of batteries, and the side face, facing one pressing plate, of each battery is provided with a pole; each conductive part is used for conducting poles of two adjacent batteries, and the plurality of conductive parts are used for respectively connecting anodes and cathodes of a plurality of batteries in series; the pressing plate comprises a fixing part, the lead-out piece comprises a first section and a second section which are connected with each other, and along the arrangement direction of the plurality of batteries and the pressing plate, the first section is positioned between the plurality of batteries and one pressing plate, and the first section is used for conducting the conductive piece on the outermost side in the plurality of conductive pieces connected in series; the fixing part and the second section are located outside the projection of the plurality of batteries, and the fixing part is used for fixedly holding the second section. According to the battery pack, the displacement of the lead-out piece is limited through the fixing part, so that external equipment and the lead-out piece can be fixed conveniently, and conduction with the battery pack is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery pack, in particular to a battery pack and a power consumption device. BACKGROUND

[0002] The battery in the battery pack is connected with the external device through the lead-out piece. When the battery pack is not connected with the external device, the end of the lead-out piece facing outward is in a free state and may be deformed due to external interference, thereby reducing the connection strength between the battery pack and the external device. CONTENT OF THE UTILITY MODEL

[0003] In view of the above-mentioned technical problems, the purpose of the present application is to provide a battery pack limiting the position of the lead-out piece and a power consumption device comprising the battery pack, which specifically comprises the following technical solutions:

[0004] In the first aspect, the present application provides a battery pack, comprising a plurality of batteries, two pressing plates, a plurality of conductive pieces and at least two lead-out pieces. The plurality of batteries are arranged in sequence, and the two pressing plates are arranged on opposite sides of the plurality of batteries along a direction perpendicular to the arrangement direction of the plurality of batteries. Each battery is provided with a pole on the side facing one pressing plate. Each conductive piece is used to connect the poles of two adjacent batteries. The plurality of conductive pieces are used to connect the positive poles and the negative poles of the plurality of batteries in series, respectively. The pressing plate comprises a fixed part, and the lead-out piece comprises a first segment and a second segment connected with each other. Along the arrangement direction of the plurality of batteries and the pressing plate, the first segment is located between the plurality of batteries and one pressing plate, and the first segment is used to connect the outermost conductive piece in the plurality of conductive pieces connected in series. The fixed part and the second segment are located outside the projection of the plurality of batteries, and the fixed part is used to hold the second segment.

[0005] The first segment of the lead-out piece of the battery pack of the present application is connected with the plurality of batteries, and the second segment of the lead-out piece extends to the outside of the pressing plate, thereby facilitating the connection between the external device and the battery pack through the second segment of the lead-out piece.

[0006] The pressing plate of the battery pack of the present application holds the second segment of the lead-out piece through the fixed part, so as to limit the relative position between the second segment of the lead-out piece and the battery pack, thereby avoiding the poor connection between the lead-out piece and the external device caused by the position error of the second segment, and ensuring the effective connection between the lead-out piece and the external device.

[0007] In one embodiment, the second segment comprises an extension segment, which extends along the extension direction of the first segment. One end of the extension segment away from the plurality of batteries is flush with the side edge of the pressing plate or extends to the outside of the pressing plate.

[0008] In the present embodiment, the second segment comprises an extension segment, which extends along the extension direction of the first segment and extends to the outside of the pressing plate. One end of the extension segment is flush with the side edge of the pressing plate or extends to the outside of the pressing plate, so that the second segment is located on the opposite side of the battery pack, thereby facilitating the connection between the external device and the lead-out piece and improving the connection efficiency between the battery pack and the external device.

[0009] In one embodiment, the second section includes a bending section, the extension direction of the bending section intersects with the extension direction of the extending section, and the surface of the bending section away from the multiple batteries is flush with the side of the pressure plate or located outside the pressure plate.

[0010] In this embodiment, the second section includes a bent section, which is flush with the side of the pressure plate or extends to the outside of the pressure plate, so that the bent portion is away from the surface of one side of the multiple batteries and is located on the relatively outside of the battery pack, further increasing the contact area of ​​the lead-out piece for connecting with the external device, thereby improving the connection strength between the battery pack and the external device.

[0011] In one embodiment, an extending direction of the first segment is perpendicular to an arrangement direction of the plurality of batteries.

[0012] In this embodiment, the overall size of the battery pack is larger along the direction in which the multiple batteries are arranged, and the extension direction of the first section is perpendicular to the direction in which the multiple batteries are arranged, so that the arrangement direction of the lead-out piece and the external device is perpendicular to the arrangement direction of the multiple batteries. The overall size of the battery pack after being connected to the external device is smaller, thereby avoiding excessive size in a single direction and reducing the occupied space.

[0013] In one embodiment, the fixing portion includes a through hole, the axial direction of the through hole is parallel to the extension direction of the second section, and the second section passes through and is fixed to the through hole.

[0014] In this embodiment, the fixing portion is provided with a through hole, through which the second segment passes to securely connect the second segment to the fixing portion, thereby ensuring the relative position of the second segment and the battery pack. The portion of the second segment that passes through the through hole can also be connected to an external device, preventing the connection between the fixing portion and the second segment from interfering with the connection between the external device and the lead-out member.

[0015] In one embodiment, the fixing portion includes an insulating member, and the insulating member covers an inner wall of the through hole.

[0016] In this embodiment, the insulating member covers the inner wall of the through hole to separate the second section from the fixing portion, thereby preventing current from being conducted to the pressing plate and ensuring user safety.

[0017] In one embodiment, the fixing portion includes a bolt, the axial direction of the bolt is parallel to the thickness direction of the second section, the second section includes a connecting hole, one end of the bolt is fixed to the pressure plate, and the other end passes through the connecting hole and is fixedly connected to the second section.

[0018] In this embodiment, the fixing portion is secured to the second section by a bolt passing through the connection hole, thereby securing the second section relative to the battery pack. The head of the bolt can abut against the side of the second section away from the pressure plate to secure the second section. Alternatively, the connection hole can be a threaded hole, allowing the bolt to be threadedly engaged with the second section.

[0019] In one embodiment, the size of the connecting hole is larger than the diameter of the bolt along the extending direction of the second section.

[0020] In this embodiment, the size of the connecting hole is larger than the diameter of the bolt, so that the fixing part has a margin for holding the lead-out piece. Due to the connecting error, the deformation of the lead-out piece occurs after the lead-out piece is fixedly connected with the external device, and the larger stress inside the lead-out piece will easily accelerate the fracture of the lead-out piece, resulting in the reduction of the service life of the battery pack. The lead-out piece with the margin can reduce the stress generated by the fixed connection of the lead-out piece with the external device, and ensure the longer service life of the battery pack.

[0021] In one embodiment, each battery is provided with at least one pole column towards the side of each pressing plate, and a plurality of conductive pieces are arranged between the plurality of batteries and each pressing plate, wherein: at least one first section of the lead-out piece is arranged between the plurality of batteries and each pressing plate, and the fixing part of each pressing plate is used for holding at least one second section of the lead-out piece.

[0022] In this embodiment, each battery includes two pole columns, which are respectively arranged at the two sides of each battery along the arrangement direction of the plurality of batteries and the pressing plates, and at least one lead-out piece is arranged between each pressing plate and the plurality of batteries, so that the fixing part of each pressing plate fixes at least one lead-out piece, and the lead-out piece of the battery pack has more setting positions.

[0023] In a second aspect, the embodiments of the present application further provide a power utilization device, which comprises the above-mentioned battery pack, and the battery pack is used for power supply of the power utilization device.

[0024] It can be understood that, because the battery pack is used in the power utilization device of the present application, the connection strength between the lead-out piece of the battery pack and the power utilization device is improved, so that the power utilization device of the present application is more reliable and has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is an exploded structural schematic view of the battery pack provided in one embodiment of the present application;

[0026] Figure 2 FIG. 2 is a structural schematic view of the battery pack provided in one embodiment of the present application;

[0027] Figure 3 FIG. 3 is a structural schematic view of the pressing plate provided in one embodiment of the present application;

[0028] Figure 4 FIG. 4 is a first partial cross-sectional structural schematic view of the battery pack provided in one embodiment of the present application;

[0029] Figure 5 FIG. 5 is a second partial cross-sectional structural schematic view of the battery pack provided in one embodiment of the present application;

[0030] Figure 6 This is a schematic diagram of a third partial cross-sectional structure of a battery pack provided in one embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of a fourth partial cross-sectional structure of a battery pack provided in one embodiment of the present application;

[0032] Figure 8 A schematic structural diagram of a lead-out member provided in one embodiment of the present application from one perspective;

[0033] Figure 9 A schematic structural diagram of a lead-out member provided in one embodiment of the present application from another perspective;

[0034] Figure 10 This is a schematic diagram of a fifth partial cross-sectional structure of a battery pack provided in one embodiment of the present application;

[0035] Figure 11 This is a schematic diagram of a sixth partial cross-sectional structure of a battery pack provided in one embodiment of the present application;

[0036] Figure 12 This is a partial structural diagram of an extension portion provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0038] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application include direct and indirect connections (couplings) unless otherwise specified. The directional terms mentioned in the present application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] See also Figure 1 and Figure 2 ,in, Figure 1A schematic diagram of the exploded structure of a battery pack 100 provided in one embodiment of the present application is shown; Figure 2 A schematic structural diagram of a battery pack 100 provided in an embodiment of the present application is shown.

[0040] An embodiment of the present application provides a battery pack 100, comprising a plurality of batteries 10, two pressure plates 20, a plurality of conductive members 30, and at least two lead-out members 40. The plurality of batteries 10 are arranged in sequence, and the two pressure plates 20 are arranged on opposite sides of the plurality of batteries 10 in a direction perpendicular to the arrangement of the plurality of batteries 10. A pole 11 is provided on the side of each battery 10 facing a pressure plate 20. Each conductive member 30 is used to conduct the poles 11 of two adjacent batteries 10. The plurality of conductive members 30 are used to connect the positive and negative poles of the plurality of batteries 10 in series, respectively.

[0041] Specifically, in one embodiment, Figure 1 As shown, each battery 10 includes two poles 11. Along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the two poles 11 are respectively on both sides of each battery 10. A plurality of conductive members 30 are respectively arranged between each pressure plate 20 and the multiple batteries 10. Each conductive member 30 is used to conduct the poles 11 of two adjacent batteries 10 located on the same side to conduct the two batteries 10.

[0042] exist Figure 1 In the provided battery pack 100, multiple batteries 10 are arranged in sequence along a first direction 001 to form a group of series-connected batteries 10. Multiple groups of series-connected batteries 10 are provided between two pressure plates 20. The multiple groups of series-connected batteries 10 are arranged in sequence along a second direction 002. The first direction 001 and the second direction 002 intersect and are parallel to the plane direction of the pressure plate 20. Two adjacent groups of series-connected batteries 10 are connected in parallel through a conductive member 30.

[0043] In another embodiment, two adjacent groups of series-connected batteries 10 are connected in series via a conductive member 30 , and the connection method of the multiple batteries 10 can be set based on the voltage and current required by the external device to be connected thereto.

[0044] The lead-out member 40 of the battery pack 100 provided in the embodiment of the present application includes a first section 41 and a second section 42 connected to each other. Along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the first section 41 is located between the multiple batteries 10 and the pressure plate 20. The first section 41 is used to conduct the outermost conductive member 30 among the multiple conductive members 30 connected in series.

[0045] Specifically, in one embodiment, Figure 1As shown, the plurality of batteries 10 are arranged in series along a first direction to form a group of series-connected batteries 10, and a plurality of groups of series-connected batteries 10 are arranged between the two pressing plates 20. The battery pack 100 includes two lead-out pieces 40, which are fixed to and in electrical connection with the conductive pieces 30 on opposite sides of the battery pack 100, and serve as the positive and negative electrodes of the battery pack 100, respectively.

[0046] In the prior art battery pack, the battery pack is in electrical connection with external devices through the lead-out pieces, one end of the lead-out piece is fixed to the conductive piece, and the other end extends towards the opposite side of the battery pack. When the battery pack is not in electrical connection with the external devices, the other end of the lead-out piece is in a free state and may be deformed due to external interference, resulting in poor connection with the external devices. In addition, the position of the other end of the lead-out piece in the free state has an error, and the fixed connection strength of the lead-out piece with the external devices is not high. When the lead-out piece is fixed to the external devices by welding, false welding is likely to occur, resulting in an increase in the resistance at the connection between the lead-out piece and the external devices, and a hidden danger of temperature out-of-control of the battery pack.

[0047] The pressing plate 20 of the battery pack 100 provided in the embodiments of the present application includes a fixed portion 21, and the fixed portion 21 and the second section 42 are located outside the projection of the plurality of batteries 10 along the arrangement direction of the plurality of batteries 10 and the pressing plate 20. The fixed portion 21 is used to hold the second section 42.

[0048] Specifically, in one embodiment, as shown in Figure 1 In the direction along the plane of the pressing plate 20, the second section 42 extends towards the direction away from the plurality of batteries 10. In the arrangement direction of the plurality of batteries 10 and the pressing plate 20, the second section 42 is spaced apart from the body of the pressing plate 20. The fixed portion 21 includes an extension portion 212, which extends along the arrangement direction of the plurality of batteries 10 and the pressing plate 20 and is in abutment with the second section 42. The fixed portion 21 further includes fasteners, one end of the extension portion 212 is fixedly connected to the body of the pressing plate 20 through the fasteners, and the other end is fixedly connected to the second section 42 through the fasteners, so as to hold the second section 42.

[0049] It can be understood that the battery pack 100 provided in the embodiments of the present application holds the second section 42 of the lead-out piece 40 through the fixed portion 21 of the pressing plate, so as to limit the relative position of the second section 42 and the battery pack 100, avoid poor contact of the lead-out piece 40 with the external devices due to the position error of the second section 42, and ensure effective connection of the lead-out piece 40 with the external devices.

[0050] In addition, by limiting the relative position of the second section 42 and the battery pack 100, it is also convenient for the connection and electrical connection of the external devices with the battery pack 100, and the connection efficiency of the battery pack 100 with the external devices is improved.

[0051] Please refer to Figure 3 a structural schematic view of the pressing plate 20 provided in one embodiment of the present application.

[0052] In one embodiment, if Figure 1 As shown, along the direction perpendicular to the arrangement of the multiple batteries 10, two pressing plates 20 are arranged on opposite sides of the multiple batteries 10, and multiple conductive members 30 are provided between each pressing plate 20 and the multiple batteries 10. Figure 3 Each pressing plate 20 is provided with a plurality of limiting holes 22 , and the limiting holes 22 of the two pressing plates 20 are aligned one by one. Along the direction in which the multiple batteries 10 and the pressing plates 20 are arranged, each limiting hole 22 is located in the gap between the two batteries 10 , so that a fastener can pass through the limiting holes 22 on the two pressing plates 20 .

[0053] It can be understood that the two pressing plates 20 are fixedly connected by fasteners, and adjusting the distance between the two pressing plates 20 can make the pressing plate 20 abut against each conductive member 30, thereby protecting the conductive member 30 and limiting the position of the conductive member 30.

[0054] In another embodiment, the lead-out member 40 and the conductive member 30 are stacked along the arrangement direction of the multiple batteries 10 and the pressure plate 20. Each pressure plate 20 can also respectively abut the first section 41 of the lead-out member 40 and cooperate with the fixing portion 21 to hold the second section of the lead-out member 40, further ensuring the relative position of the lead-out member 40 and the battery pack 100, and reducing the position error of the second section of the lead-out member 40.

[0055] The present invention also provides an electrical device including the aforementioned battery pack 100, which is used to power the electrical device. The use of the aforementioned battery pack 100 improves the connection strength between the lead-out member 40 of the battery pack 100 and the electrical device, making the electrical device more reliable and having a longer service life.

[0056] See also Figure 4 A schematic diagram of a first partial cross-sectional structure of a battery pack 100 provided in one embodiment of the present application is shown.

[0057] In one embodiment, the second section 42 includes an extension section 421 extending along the extension direction of the first section 41 . An end of the extension section 421 away from the multiple batteries 10 is flush with the side of the pressing plate 20 or extends to the outside of the pressing plate 20 .

[0058] In one embodiment, if Figure 4As shown, along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the first section 41 is located between the pressure plate 20 and the conductive member 30. The first section 41 extends to the side of the conductive member 30 in a direction away from the multiple batteries 10. The extension section 421 of the second section 42 extends along the extension direction of the first section 41 and extends to the outside of the pressure plate 20. External equipment can be connected to the battery pack 100 through the extension section 421 extending to the outside of the pressure plate 20, which facilitates the connection between the external equipment and the lead-out member and improves the connection efficiency between the battery pack and the external equipment.

[0059] In another embodiment, the extension section 421 along the second section 42 extends along the extension direction of the first section 41 and is flush with the side of the pressure plate 20, so that the extension section 421 is located on the relatively outer side of the battery pack 100, which can also facilitate the conduction between the external device and the lead-out member, thereby improving the connection efficiency between the battery pack and the external device.

[0060] In another embodiment, along the arrangement direction of the plurality of batteries 10 and the pressing plate 20 , the pressing plate 20 and the conductive member 30 directly abut against the first section 41 of the lead-out member 40 and the side of the conductive member 30 , and are in contact and conductive.

[0061] See also Figure 5 A schematic diagram of a second partial cross-sectional structure of a battery pack 100 provided in one embodiment of the present application is shown.

[0062] In one embodiment, if Figure 5 As shown, along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the size of the fixing portion 21 is larger than the size of the main body of the pressure plate 20, that is, the extension section 421 of the second section 42 of the lead-out member 40 abuts against the fixing portion 21, and the position of the conductive member 30 is limited by the first section 41, so that the lead-out member 40 can also abut between the conductive member 30 and the pressure plate 20.

[0063] See also Figure 6 A schematic diagram of a third partial cross-sectional structure of a battery pack 100 provided in one embodiment of the present application is shown.

[0064] In one embodiment, the second section 42 includes a bending section, the extension direction of the bending section intersects with the extension direction of the extension section 421, and the surface of the bending section away from the multiple batteries 10 is flush with the side of the pressure plate 20 or located on the outside of the pressure plate 20.

[0065] In one embodiment, if Figure 6As shown, the extension section 421 extends along the extension direction of the first section 41, and the first bent section 422 extends along the arrangement direction of the multiple batteries 10 and the pressure plate 20, and the first bent section 422 is located outside the pressure plate 20. The surface of the first bent section 422 away from the multiple batteries 10 is located on the relatively outer side of the battery pack 100, facilitating connection with external devices. At the same time, it further increases the contact area of ​​the lead-out member 40 for connecting with external devices, thereby improving the connection strength between the battery pack 100 and external devices.

[0066] In another embodiment, the surface of the first bent section 422 away from the multiple batteries 10 is flush with the side of the pressure plate 20, which can also facilitate the conduction between the external device and the lead-out member, thereby improving the connection efficiency between the battery pack and the external device; and along the extension direction of the first section 41, the overall size of the battery pack 100 is smaller.

[0067] See also Figure 7 A schematic diagram of a fourth partial cross-sectional structure of a battery pack 100 provided in one embodiment of the present application is shown.

[0068] In another embodiment, Figure 7 As shown, the first bending section 422 is located within the projection of the pressure plate 20 along the arrangement direction of the multiple batteries 10 and the pressure plate 20, that is, the length dimension of the extension section 421 is smaller than the distance dimension between the conductive member 30 and the side of the pressure plate 20. At this time, the first bending section 422 is located on the side of the pressure plate 20 facing the multiple batteries 10 and is fixedly connected to the fixing portion 21.

[0069] In one embodiment, the extension direction of the first bent section 422 is parallel to the plane direction of the pressure plate 20, the surface of the first bent section 422 away from the multiple batteries 10 is flush with the side of the pressure plate 20, and along the extension direction of the first section 41, the overall size of the battery pack 100 is smaller.

[0070] In another embodiment, the extending direction of the first bending section 422 is parallel to the plane direction of the pressing plate 20 , and the first bending section 422 is away from the surface of one side of the plurality of batteries 10 .

[0071] In the above two embodiments, the first bending section 422 is located on the relatively outer side of the pressure plate 20, and the surface of the first bending section 422 away from the multiple batteries 10 is located on the relatively outer side of the battery pack 100, which is convenient for connection with external devices; at the same time, the contact area of ​​the lead-out member 40 for connection with external devices is further increased, thereby improving the connection strength between the battery pack 100 and the external device.

[0072] In one embodiment, the first segment 41 extends in a direction perpendicular to the direction in which the multiple batteries 10 are arranged, that is, the first segment 41 extends in a first direction 001. Since the overall size of the battery pack 100 is larger along the direction in which the multiple batteries 10 are arranged, the first segment 41 extends in a direction perpendicular to the direction in which the multiple batteries 10 are arranged. This reduces the overall size of the battery pack 100 after connection to an external device, thereby preventing the size from being excessively large in a single direction.

[0073] In one embodiment, a battery pack 100 includes multiple groups of batteries 10 connected in series, with adjacent groups of batteries arranged along a second direction 002. The dimensions of the multiple batteries 10 along the second direction 002 are greater than those along the first direction 001. A first segment 41 extends along the first direction 001. The extension direction of the first segment 41 can be determined based on the dimensions of the multiple batteries 10 to prevent the battery pack 100 from being too large in a single direction, thereby reducing the space occupied by the battery pack 100.

[0074] See also Figure 8 and Figure 9 ,in Figure 8 A schematic structural diagram of a lead-out member 40 provided in one embodiment of the present application from one perspective is shown; Figure 9 A structural schematic diagram of the lead-out member 40 provided in an embodiment of the present application from another perspective is shown.

[0075] In one embodiment, if Figure 8 and Figure 9 As shown, the second section 42 includes a second bending section 423, the extension direction of the second bending section 423 is parallel to the plane direction of the pressure plate 20, and the second bending section 423 and the first section 41 are spaced apart from each other along the arrangement direction of the multiple batteries 10 and the pressure plate 20. The second bending section 423 is used to be fixedly connected to the fixing portion 21.

[0076] See also Figure 10 and Figure 11 ,in, Figure 10 This is a schematic diagram of a fifth partial cross-sectional structure of a battery pack 100 provided in one embodiment of the present application; Figure 11 1 is a sixth partial cross-sectional structural diagram of a battery pack 100 provided in an embodiment of the present application.

[0077] In one embodiment, if Figure 10 As shown, along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the surface of the first section 41 away from the pressure plate 20 is adhered to and fixed to the conductive member 30, and the second bent section 423 is located on the side of the first section 41 facing the pressure plate 20, and the surface of the second bent section 423 away from the multiple batteries 10 is adhered to and fixed to the fixing portion 21.

[0078] In another embodiment, Figure 11As shown, along the arrangement direction of the plurality of batteries 10 and the pressing plate 20, the second bending section 423 is located on the side of the first section 41 away from the body of the pressing plate 20, the fixing portion 21 extends towards the second bending section 423, and the surface of the second bending section 423 away from the plurality of batteries 10 is attached to and fixed with the fixing portion 21.

[0079] It can be understood that, by arranging the bending section, the lead-out piece 40 has a certain deformation allowance. Due to connection errors, the lead-out piece 40 is deformed after being fixedly connected with the external device, and the relatively large stress inside the lead-out piece 40 will easily accelerate the fracture of the lead-out piece 40, thereby reducing the service life of the battery pack 100. The lead-out piece 40 with the allowance can reduce the stress generated when the lead-out piece 40 is fixedly connected with the external device, thereby ensuring that the battery pack 100 has a relatively long service life.

[0080] In Figure 10 and Figure 11 In the battery pack 100 provided by the application, the first bending section 422 and the second bending section 423 are arranged simultaneously, and the lead-out piece 40 has a larger deformation allowance than the lead-out piece 40 with only one bending section.

[0081] In an embodiment, the fixing portion 21 comprises a through hole, the axial direction of the through hole is parallel to the extension direction of the second section 42, and the second section 42 passes through and is fixed in the through hole. The second section 42 passes through the through hole to ensure that the second section 42 is fixedly connected with the fixing portion 21, thereby ensuring the relative position between the second section 42 and the battery pack 100. The part of the second section 42 passing through the through hole can also be connected with the external device, thereby avoiding the influence of the connection between the fixing portion 21 and the second section 42 on the connection between the external device and the lead-out piece 40.

[0082] In an embodiment, the fixing portion 21 comprises an insulating piece, the insulating piece covers the inner wall of the through hole to separate the second section 42 from the fixing portion 21, thereby avoiding the conduction of current to the pressing plate 20 and ensuring the safety of the user.

[0083] In an embodiment, the fixing portion 21 comprises a bolt, the axial direction of the bolt is parallel to the thickness direction of the second section 42, the second section comprises a connecting hole 4231, one end of the bolt is fixed with the pressing plate 20, and the other end passes through the connecting hole 4231 and is fixedly connected with the second section 42.

[0084] In an embodiment, along the extension direction of the second section 42, the size of the connecting hole 4231 is greater than the diameter of the bolt, so that the fixing of the fixing portion 21 and the lead-out piece 40 has an allowance, thereby reducing the stress generated when the lead-out piece 40 is fixedly connected with the external device and ensuring that the battery pack 100 has a relatively long service life.

[0085] Please refer to Figure 12 A part of the structure of the extension portion 212 provided in an embodiment of the application is shown in the schematic view.

[0086] In one embodiment, if Figure 1 、 Figure 2 and Figure 12 As shown, the fixing portion 21 includes a fixing hole 211, an extension portion 212 and two fasteners. The fixing hole 211 is fixedly connected to one end of the extension portion 212 through the fastener, and the connecting hole 4231 is fixedly connected to the other end of the extension portion 212 through the fastener. The material of the extension portion 212 includes insulating material, which can also separate the second section 42 from the fixing portion 21 to prevent current from being conducted to the pressure plate 20, thereby ensuring the safety of the user.

[0087] It can be understood that the elastic modulus of the extension portion 212 is smaller than that of the main body of the pressure plate 20, and the extension portion 212 has a certain deformation margin. By fixing the extension portion 212 to the second section 42, the stress generated by the fixed connection between the lead-out member 40 and the external device can also be reduced, thereby ensuring that the battery pack 100 has a longer service life.

[0088] In one embodiment, the first section 41 of a lead-out member 40 is located between a pressure plate 20 and multiple batteries 10, and the second section 42 is fixedly connected to the fixing portion 21 of the pressure plate 20 and the fixing portion 21 of another pressure plate 20, respectively, to improve the connection strength between the second section 42 and the pressure plate 20.

[0089] In one embodiment, each battery 10 is provided with at least one pole 11 on the side facing each pressure plate 20, a plurality of conductive members 30 are provided between the plurality of batteries 10 and each pressure plate 20, a first section 41 of at least one lead-out member 40 is provided between the plurality of batteries 10 and each pressure plate 20, and the fixing portion 21 of each pressure plate 20 is used to hold the second section 42 of at least one lead-out member 40.

[0090] In one embodiment, if Figure 1 As shown, each battery 10 includes two poles 11. Along the arrangement direction of the multiple batteries 10 and the pressure plate 20, the two poles 11 are respectively located on both sides of each battery 10. At least one lead-out piece 40 is respectively provided between each pressure plate 20 and the multiple batteries 10. The fixing portion 21 of each pressure plate 20 fixes at least one lead-out piece 40, so that the lead-out piece 40 of the battery pack 100 has more setting positions.

[0091] In the description of the specification, the description using terms such as "one embodiment", "some embodiments", "certain embodiments", "an example", "a specific example" or "some examples" etc. means that the particular feature, structure, material or characteristic following the term is included in at least one embodiment or example of the application. The illustrative expressions do not necessarily indicate the same embodiment or example. Also, the described particular feature, structure, material or characteristic can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A battery pack, characterized in that: The battery comprises a plurality of batteries, two pressing plates, a plurality of conductive members, and at least two lead-out members, wherein the plurality of batteries are arranged in sequence, and the two pressing plates are arranged on opposite sides of the plurality of batteries along a direction perpendicular to the arrangement of the plurality of batteries. Each battery is provided with a pole on a side facing one of the pressing plates, and each conductive member is used to conduct the poles of two adjacent batteries, and the plurality of conductive members are used to respectively connect the positive and negative poles of the plurality of batteries in series. The pressing plate includes a fixing portion, and the lead-out member includes a first section and a second section connected to each other, along the arrangement direction of the plurality of batteries and the pressing plate: The first section is located between the multiple batteries and one of the pressure plates, and the first section is used to conduct the outermost conductive member among the multiple conductive members connected in series; The fixing portion and the second segment are located outside the projection of the plurality of batteries, and the fixing portion is used to hold the second segment.

2. The battery pack according to claim 1, wherein: The second section includes an extension section extending along an extension direction of the first section, and an end of the extension section away from the plurality of batteries is flush with a side edge of the pressing plate or extends to an outer side of the pressing plate.

3. The battery pack according to claim 2, wherein: The second section includes a bending section, an extension direction of the bending section intersects with an extension direction of the extension section, and a surface of the bending section away from the plurality of batteries is flush with a side edge of the pressing plate or located outside the pressing plate.

4. The battery pack according to claim 1, wherein: An extending direction of the first segment is perpendicular to an arrangement direction of the plurality of batteries.

5. The battery pack according to any one of claims 1 to 4, wherein: The fixing portion includes a through hole, the axial direction of the through hole is parallel to the extending direction of the second section, and the second section passes through and is fixed to the through hole.

6. The battery pack according to claim 5, wherein: The fixing portion includes an insulating member, and the insulating member covers an inner wall of the through hole.

7. The battery pack according to any one of claims 1 to 4, wherein: The fixing portion includes a bolt, the axial direction of the bolt is parallel to the thickness direction of the second section, the second section includes a connecting hole, one end of the bolt is fixed to the pressure plate, and the other end passes through the connecting hole and is fixedly connected to the second section.

8. The battery pack according to claim 7, wherein: Along the extending direction of the second section, the size of the connecting hole is larger than the diameter of the bolt.

9. The battery pack according to claim 1, wherein: Each of the batteries is provided with at least one pole on the side facing each of the pressing plates, and the plurality of conductive members are provided between the plurality of batteries and each of the pressing plates, wherein: At least one first section of the lead-out member is disposed between the plurality of batteries and each of the pressing plates, and the fixing portion of each of the pressing plates is used to hold at least one second section of the lead-out member.

10. An electrical device, characterized in that: The battery pack comprises the battery pack according to any one of claims 1 to 9, and the battery pack is used to power the electrical device.

Images