Connecting structure, battery pack and vehicle

Abstract

The utility model provides a connecting structure, a battery pack and a vehicle, and relates to the technical field of battery packs. The connecting structure comprises a bridging piece. The two connecting pieces are arranged at the two ends of the bridging piece respectively, and the two ends of the bridging piece are used for being electrically connected with the corresponding battery cell modules through the connecting pieces respectively; the two ends of the bridging piece are each provided with a first notch, and the first notches are at least opposite to part of the connecting pieces. And the connecting piece is configured to be connected with the acquisition piece at a position opposite to the first notch so as to detect the voltage of the battery cell module. According to the invention, the connecting piece is arranged, and the first gap on the bridging piece is opposite to the connecting piece, so that part of the connecting piece can be connected with the acquisition piece at the position of the first gap, the assembly of the acquisition piece and the assembly of the bridging piece do not interfere with each other, and the assembly of the acquisition piece and the assembly of the bridging piece can be simultaneously carried out in some application scenes; the assembling process of the collecting piece and the bridging piece is simplified, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the battery pack technology, and particularly to a connecting structure, a battery pack and a vehicle. BACKGROUND

[0002] In recent years, the electric vehicle industry has developed rapidly. As an important part of electric vehicles, the battery pack not only relates to the performance and safety of electric vehicles, but also directly affects the market competitiveness and sustainable development of electric vehicles.

[0003] In the related art, the battery pack includes a plurality of battery cell modules. Two adjacent battery cell modules are electrically connected through a jumper copper bar. A collection piece is arranged on the jumper copper bar to detect parameters of the battery cell modules.

[0004] However, during the assembly process of the battery pack, the jumper copper bar needs to be assembled first, and then the collection piece can be installed on the jumper copper bar, which affects the assembly efficiency. UTILITY MODEL CONTENT

[0005] Therefore, the present application provides a connecting structure, a battery pack and a vehicle to simplify the assembly process and improve the assembly efficiency.

[0006] To achieve the above-mentioned purpose, the present application provides a connecting structure, a battery pack and a vehicle, which adopts the following technical solutions:

[0007] In a first aspect, the present application provides a connecting structure, comprising:

[0008] a jumper piece;

[0009] two connecting pieces, the two connecting pieces are respectively arranged at two ends of the jumper piece, and the two ends of the jumper piece are respectively electrically connected to corresponding battery cell modules through the connecting pieces;

[0010] the two ends of the jumper piece respectively have a first notch, and the first notch is opposite to at least part of the connecting pieces;

[0011] the connecting piece is configured to be connected to a collection piece at a position opposite to the first notch to detect parameters of the battery cell module.

[0012] In a possible implementation manner, the connecting structure provided by the present application has a boss at a position opposite to the first notch on the connecting piece, and a top of the boss is used to connect the collection piece.

[0013] a top surface of the boss is used to be in the same horizontal plane as a circuit board of the collection piece.

[0014] In a possible implementation manner, the connecting structure provided by the present application has a gap between the boss and the battery cell module.

[0015] In a possible implementation, the connecting structure provided in the application has at least one connecting hole on the connecting piece, and the connecting hole is used for sleeving on the connecting column of the battery cell module.

[0016] In a possible implementation, the connecting structure provided in the application further has a first positioning part on the connecting piece, and the first positioning part is used for clamping on a second positioning part on the battery cell module.

[0017] One of the first positioning part and the second positioning part is a positioning groove, and the other is a positioning protrusion.

[0018] In a possible implementation, the connecting structure provided in the application has the first positioning part opposite to the first gap.

[0019] Alternatively, the cross-connection piece has a second gap.

[0020] The second gap is used for being opposite to one of the connecting columns to avoid the connecting column.

[0021] In a possible implementation, the connecting structure provided in the application has the cross-connection piece including a cross-connection part and two connecting parts.

[0022] The cross-connection part is arranged between the two connecting parts and connects the two connecting parts, and the connecting part is used for electrically connecting with the battery cell module.

[0023] The cross-connection part has elasticity to buffer the impact force received by the connecting part.

[0024] In a possible implementation, the connecting structure provided in the application has a welding groove arranged on the side of the connecting part away from the battery cell module.

[0025] The welding groove corresponds to the pole column of the battery cell module, and the welding groove is configured to reduce the thickness of the connecting part, so as to be opposite to the welding equipment to weld the connecting part to the battery cell module.

[0026] In a second aspect, the application provides a battery pack including at least two battery cell modules and at least one connecting structure.

[0027] The connecting structure is used for connecting the two battery cell modules in series.

[0028] In a third aspect, the application provides a vehicle including a vehicle body and the battery pack.

[0029] The application provides a connecting structure, a battery pack and a vehicle, wherein the connecting structure comprises a crosspiece, two connecting pieces, the two connecting pieces are respectively arranged at two ends of the crosspiece, and the two ends of the crosspiece are used for being electrically connected with corresponding battery cell modules through the connecting pieces respectively, the two ends of the crosspiece are respectively provided with a first notch, and the first notch is at least opposite to part of the connecting pieces; the connecting piece is configured to be connected with a collecting piece at a position opposite to the first notch to detect parameters of the battery cell module. By arranging the connecting piece and making the first notch on the crosspiece opposite to the connecting piece, part of the connecting pieces can be connected with the collecting piece at the position of the first notch, so that the assembly of the collecting piece and the assembly of the crosspiece do not interfere with each other, and in some application scenarios, the assembly of the collecting piece and the crosspiece can be performed at the same time, the assembly process of the collecting piece and the crosspiece is simplified, and the assembly efficiency is improved.

[0030] In addition to the technical problems solved by the embodiments of the application described above, the technical features constituting the technical solutions and the beneficial effects brought by the technical features, other technical problems solved by the technical solutions of the application, other technical features contained in the technical solutions and the beneficial effects brought by the technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0031] The specific embodiments of the application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the application, and the application is not limited to the following specific embodiments.

[0032] Figure 1 A partial structure schematic diagram of a battery pack provided by the embodiments of the application is shown in FIG. 1.

[0033] Figure 2 A partial structure schematic diagram of a battery pack provided by the embodiments of the application is shown in FIG. 1. Figure 1 An enlarged structure schematic diagram of part A in FIG. 1 is shown in FIG. 2.

[0034] Figure 3 An enlarged structure schematic diagram of part A in FIG. 1 is shown in FIG. 2. Figure 2 An exploded structure schematic diagram of the connecting structure in FIG. 1 is shown in FIG. 3.

[0035] Figure 4 An exploded structure schematic diagram of the connecting structure in FIG. 1 is shown in FIG. 3. Figure 3 A structure schematic diagram of the crosspiece and the connecting piece from another perspective in FIG. 1 is shown in FIG. 4.

[0036] Explanation of reference signs:

[0037] 10, connecting structure; 20, battery cell module; 21, connecting column; 22, second positioning part; 30, collecting piece; 40, gap; 50, observation hole;

[0038] 100, crosspiece; 101, first notch; 102, second notch; 110, crosspiece part; 120, connecting part; 121, welding groove;

[0039] 200, connecting piece; 210, boss; 220, connecting hole; 230, first positioning part.

[0040] The specific embodiments of the present application have been described in the above description and the accompanying drawings. The above description and the accompanying drawings are not intended to limit the scope of the present application in any way. The above description and the accompanying drawings are merely intended to explain the concept of the present application to those skilled in the art. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings of the preferred embodiments of the present application. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, not all the embodiments. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0042] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In the description of the embodiments of the present application, it should be understood that the terms "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specified and limited.

[0045] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily describe a particular order or sequence.

[0046] Furthermore, the terms "comprise", "comprising", "have", "having", "include", "including", "contain", "containing", "provide", "providing", "offer", "offering", "specify", "specifying", "preserve", "preserving" and their any variations thereof, are meant to cover a non-exclusive inclusion, for example, a process, method, system, product or apparatus that comprises a list of steps or units are not necessarily limited to those explicitly listed but can include other steps or units that are not expressly listed or inherent to such process, method, product or apparatus.

[0047] As the background art says, in recent years, the electric vehicle industry has developed rapidly, and the battery pack, as an important part of the electric vehicle, not only relates to the performance and safety of the electric vehicle, but also directly affects the market competitiveness and sustainable development of the electric vehicle.

[0048] In the related art, the power battery PACK, also known as the power battery pack, includes a plurality of battery cell modules, and two adjacent battery cell modules are electrically connected through a cross-over copper bar. In order to obtain the voltage of each battery cell module in time, intelligently manage and maintain each battery cell module, prevent overcharging and overdischarging of the battery cell module, and prolong the service life of the battery cell in the battery cell module, a collection piece, such as a nickel sheet, is usually arranged on the cross-over copper bar to detect and collect parameters such as voltage and temperature of the battery cell module.

[0049] The above setting mode makes it necessary to first assemble the cross-over copper bar on the battery cell module produced by the factory, and then install the collection piece on the cross-over copper bar during the assembly process. The assembly process can only be in the form of assembling the cross-over copper bar first and then assembling the collection piece, which affects the assembly efficiency of the battery pack.

[0050] It should be noted that the specific structure of the collection piece is not limited in the embodiments of the present application.

[0051] Based on the above technical problems, the embodiments of the present application provide a connection structure, a battery pack and a vehicle. In the technical solution, the connection structure includes a cross-over piece; two connecting pieces, the two connecting pieces are respectively arranged at two ends of the cross-over piece, and the two ends of the cross-over piece are used to be electrically connected with corresponding battery cell modules through the connecting pieces respectively; the two ends of the cross-over piece respectively have a first notch, and the first notch is at least opposite to part of the connecting pieces; the connecting piece is configured to be connected with the collection piece at a position opposite to the first notch to detect the parameters of the battery cell module. By arranging the connecting piece and making the first notch on the cross-over piece opposite to the connecting piece, part of the connecting pieces can be connected with the collection piece at the position of the first notch. In this way, the assembly of the collection piece and the assembly of the cross-over piece do not interfere with each other, and in some application scenarios, the assembly of the collection piece and the cross-over piece can be performed at the same time, which simplifies the assembly process of the collection piece and the cross-over piece and improves the assembly efficiency.

[0052] Figures 1 to 4The connection structure, the battery pack and the vehicle are schematically shown, and the specific structures of the connection structure, the battery pack and the remaining parts of the vehicle are not limited to Figures 1 to 4 .

[0053] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0054] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present application provides a connection structure 10 for an electric cell module 20. The connection structure 10 comprises a crosspiece 100.

[0055] Two connecting pieces 200 are arranged at both ends of the crosspiece 100, and the two ends of the crosspiece 100 are used to be electrically connected to the corresponding electric cell module 20 through the connecting pieces 200 respectively. In an example, the crosspiece 100, the connecting pieces 200 and the corresponding electric cell module 20 can be welded. By setting the welding connection mode, the connection stability can be improved.

[0056] The two ends of the crosspiece 100 respectively have a first notch 101, and the first notch 101 is at least opposite to part of the connecting pieces 200.

[0057] The connecting pieces 200 are configured to be connected to the collection piece 30 at the position opposite to the first notch 101 to detect the parameters of the electric cell module 20. The parameters can be voltage values or temperature values.

[0058] The present application does not limit the specific number of electric cell modules 20, and the electric cell module 2010 is usually arranged in the battery pack. The connection modes of the electric cell module 20 and the battery pack, and the battery pack and the vehicle are not specifically limited.

[0059] In the above embodiments, it can be understood that by arranging the connecting piece 200 and using the first gap 101 on the cross piece 100 to be opposite to the connecting piece 200, part of the connecting piece 200 can be connected to the collecting piece 30 at the position of the first gap 101, so that the assembly of the collecting piece 30 and the assembly of the cross piece 100 do not interfere with each other, and in some application scenarios, the assembly of the collecting piece 30 and the cross piece 100 can be performed at the same time, which simplifies the assembly process of the collecting piece 30 and the cross piece 100 and improves the assembly efficiency. For example, in some examples, when the battery cell module 20 is produced, the connecting piece 200 can be connected to the battery cell module 20, which is equivalent to that the battery cell module 20 is provided with the connecting piece 200 when it is shipped. During the assembly of the cross piece 100, the cross piece 100 can be directly assembled, or by using a mechanical arm and a corresponding control program in the related art, the collecting piece 30 and the cross piece 100 can be simultaneously assembled, without being limited by the form that the cross copper bar is assembled first and the collecting piece 30 is assembled later, so that more convenient assembly options are provided, the assembly process is simplified, and the assembly efficiency of the battery pack is improved.

[0060] Here, the connecting mode of the collecting piece 30 and the connecting piece 200 can be welding or bolt connection, and the embodiments of the present application do not make specific limitations thereon.

[0061] In a specific implementation, the connecting piece 200 has a boss 210 at a position opposite to the first gap 101, and the top of the boss 210 is used to connect the collecting piece 30.

[0062] The top surface of the boss 210 is used to be at the same horizontal plane as the circuit board of the collecting piece 30.

[0063] It should be noted that the battery cell module 20 includes a plurality of battery cells, and the adjacent two battery cells are electrically connected through an aluminum bar or a copper bar. The collecting piece 30 also needs to be arranged on the aluminum bar or the copper bar, and each collecting piece 30 transmits the collected parameter information to a slave board in the battery management system through a flexible circuit board, that is, a plurality of collecting pieces 30 need to be connected to one circuit board. By arranging the boss 210, the plane on which the collecting piece 30 is installed can be at the same horizontal plane as the circuit board of the collecting piece 30, so that the external welding equipment can simultaneously weld a plurality of collecting pieces 30, and the assembly process is further simplified and the assembly efficiency is improved.

[0064] In another possible implementation, in order to improve the accuracy of the collecting piece 30 in collecting parameters, the boss 210 and the battery cell module 20 have a gap 40. By arranging the gap 40, the boss 210 can not be in contact with the battery cell module 20, so that the collecting piece 30 is not affected by other parts of the battery cell module 20 during the process of collecting parameters.

[0065] In a possible implementation, please continue to refer toFigure 2 and Figure 3 As shown in the figure, the connecting piece 200 has at least one connecting hole 220, which is used to be sleeved on the connecting column 21 of the battery cell module 20. In an example, two connecting holes 220 are arranged on the connecting piece 200, which are arranged at opposite corners of the connecting piece 200. The connecting column 21 can be a hot-melt rivet. Thus, the connecting hole 220 on the connecting piece 200 is sleeved on the connecting column 21 first, so as to realize the positioning and installation of the connecting piece 200, and then the connecting piece 200 is riveted with the battery cell module 20 by hot melting, which can further improve the installation stability of the connecting piece 200.

[0066] In a possible implementation, the connecting piece 200 is further provided with a first positioning part 230, which is used to be clamped on the second positioning part 22 of the battery cell module 20.

[0067] One of the first positioning part 230 and the second positioning part 22 is a positioning groove, and the other is a positioning protrusion.

[0068] Through the above arrangement, the connecting piece 200 is positioned and installed through the connecting column 21 and the connecting hole 220. In order to quickly sleeve the connecting hole 220 on the connecting column 21, the first positioning part 230 and the second positioning part 22 are arranged in a clamping manner, which can further quickly realize positioning, and the first positioning part 230 and the second positioning part 22 are arranged in only one group, which is equivalent to limiting the installation direction of the connecting piece 200, so that the positioning is accurate. In specific implementation, the first positioning part 230 on the connecting piece 200 is a positioning groove, and the second positioning part 22 on the battery cell module 20 is a positioning protrusion, which is clamped in the positioning groove.

[0069] In another example, the first positioning part 230 is opposite to the first gap 101, or it can be understood that the projection of the first positioning part 230 towards the first gap 101 is located inside the first gap 101. In this way, the first positioning part 230 and the second positioning part 22 are connected without interfering with the crosspiece 100, and the operator can also observe the connection of the first positioning part 230 and the second positioning part 22 through the first gap 101 to ensure the stable installation of the connecting piece 200.

[0070] In a possible implementation, the crosspiece 100 has a second gap 102.

[0071] The second gap 102 is used to be opposite to one of the connecting columns 21 to avoid the connecting column 21.

[0072] The second gap 102 can be in the form of a hole or in the form of an open slot, and the number of the second gap 102 can correspond to the number of the connecting columns 21 to reasonably avoid the connecting columns 21 and facilitate the hot-melt riveting of the connecting columns 21.

[0073] In a possible implementation, the crosspiece 100 includes the crosspiece 110 and two connecting pieces 120.

[0074] The crosspiece 110 is arranged between and connects the two connecting pieces 120, and the connecting pieces 120 are configured to be electrically connected to the battery cell modules 20.

[0075] The crosspiece 110 is elastic to buffer the impact force received by the connecting pieces 120.

[0076] By setting the crosspiece 110 to be elastic, the impact force received by the connecting pieces 120 can be buffered by elastic deformation when the connecting pieces 120 are subjected to the impact force or the pulling force. This is because the connecting pieces 120 are electrically connected to the corresponding battery cell modules 20, and the vehicle may be subjected to jolts during driving, which can cause slight shaking of the battery cell modules 20 and further cause the connecting pieces 120 to shake. By setting the crosspiece 110 to be elastic, the connecting pieces 120 can be prevented from being disconnected from the battery cell modules 20 due to shaking, which helps to improve the connection stability. In an example, as shown in Figure 3 and Figure 4 The crosspiece 110 has a U-shaped cross section, and the connecting pieces 120 are respectively connected to the two sides of the crosspiece 110, which can make the crosspiece 110 have the elastic deformation capability while simplifying the structure of the crosspiece 110 and making the crosspiece 110 easy to manufacture, which helps to reduce the cost.

[0077] Continuing to refer to Figure 2 and 3 The connecting piece 120 is provided with a welding groove 121 on the side away from the battery cell module 20.

[0078] The welding groove 121 corresponds to the pole of the battery cell module 20, and the welding groove 121 is configured to reduce the thickness of the connecting piece 120, so as to be opposite to the welding equipment for welding the connecting piece 120 to the battery cell module 20.

[0079] In the related art, the connecting piece 120 can be welded to the battery cell module 20 by laser welding. However, when the thickness of the connecting piece 120 is large, the effect of laser welding is affected. By setting the welding groove 121, the thickness of the connecting piece 120 at the position corresponding to the pole of the battery cell module 20 can be reduced, so that the welding equipment can weld the connecting piece 120 to the battery cell module 20.

[0080] In the embodiments of the present application, the connecting piece 200 is arranged between the battery cell module 20 and the connecting piece 120. It can be understood that when the connecting piece 120 is welded by the welding equipment, the connecting piece 200 and the connecting piece 120 are welded to the battery cell module 20 together. The welding equipment is the related art, and the embodiments of the present application do not limit the welding equipment.

[0081] In order to facilitate observation and positioning of the connecting portion 120 and the connecting piece 200, the connecting portion 120 and the connecting piece 200 are provided with observation holes 50 at positions opposite to the pole columns of the battery cell module 20. The welding position of the connecting portion 120 can be corrected more conveniently through the observation holes 50, and the installation accuracy is improved.

[0082] In a possible implementation, the application further provides a battery pack comprising at least two battery cell modules 20 and at least one connecting structure 10 described above.

[0083] The connecting structure 10 is used to connect two battery cell modules 20 in series. The specific structure of the connecting structure 10 has been described above, and will not be repeated here. The battery pack provided by the application has all the beneficial technical effects of the connecting structure 10 described above, and can simplify the assembly process of the battery pack and improve the assembly efficiency.

[0084] The application further provides a vehicle comprising a vehicle body and the battery pack described above, and the battery pack is arranged on the vehicle body.

[0085] It should be noted that the vehicle in the application can refer to large cars, small cars, special purpose cars, etc. For example, according to the vehicle type, the car in the application can be a sedan type, a SUV type, a Multi-Purpose Vehicles (MPV) type or other types. For vehicles, generally, wheels, power sources, and transmission systems arranged between the wheels and the power sources are provided, and the transmission system can transmit power provided by the power source to the wheels to drive the wheels to rotate, thereby driving the vehicle to travel.

[0086] The implementation principle of the connecting structure, the battery pack and the vehicle provided by the application is as follows: the connecting structure 10 comprises a cross piece 100; two connecting pieces 200, the two connecting pieces 200 are arranged at two ends of the cross piece 100, and the two ends of the cross piece 100 are used to be electrically connected to the corresponding battery cell modules 20 through the connecting pieces 200 respectively; the two ends of the cross piece 100 respectively have a first notch 101, and the first notch 101 is at least opposite to part of the connecting pieces 200; the connecting piece 200 is configured to be connected to the collection piece 30 at a position opposite to the first notch 101 to detect the parameters of the battery cell module 20. By arranging the connecting pieces 200 and making the first notch 101 on the cross piece 100 opposite to the connecting pieces 200, part of the connecting pieces 200 can be connected to the collection piece 30 at the position of the first notch 101. In this way, the assembly of the collection piece 30 and the assembly of the cross piece 100 do not interfere with each other, and in some application scenarios, the assembly of the collection piece 30 and the cross piece 100 can be performed simultaneously, thereby simplifying the assembly process of the collection piece 30 and the cross piece 100 and improving the assembly efficiency.

[0087] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein.

[0088] It is intended that any variations, uses, or adaptations of this application following in general the principle of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains or

[0089] It is understood that the application is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from its scope. The scope of the application is limited only by the claims that follow.

Claims

1. A connection structure characterized by comprising: The connecting structure (10) comprises: a crosspiece (100); two connecting pieces (200), each of which is arranged at one end of the crosspiece (100) and is used to electrically connect the corresponding battery cell module (20) through the connecting piece (200); each end of the crosspiece (100) is provided with a first notch (101), and the first notch (101) is opposite at least part of the connecting piece (200); the connecting piece (200) is configured to be connected to the acquisition piece (30) at a position opposite the first notch (101) to detect the parameters of the battery cell module (20).

2. The connection structure according to claim 1, characterized in that The connecting piece (200) is provided with a boss (210) at a position opposite the first notch (101), and the top of the boss (210) is used to connect the acquisition piece (30); the top surface of the boss (210) is used to be in the same horizontal plane as the circuit board of the acquisition piece (30).

3. The connection structure according to claim 2, characterized in that The boss (210) and the battery cell module (20) have a gap (40) therebetween.

4. The connection structure according to claim 1, characterized by The connecting piece (200) is provided with at least one connecting hole (220), and the connecting hole (220) is used to be sleeved on the connecting column (21) of the battery cell module (20).

5. The connection structure according to claim 4, characterized in that The connecting piece (200) is further provided with a first positioning portion (230), and the first positioning portion (230) is used to be clamped on the second positioning portion (22) of the battery cell module (20); one of the first positioning portion (230) and the second positioning portion (22) is a positioning groove, and the other is a positioning boss.

6. The connection structure according to claim 5, wherein The first positioning portion (230) is opposite the first notch (101). Alternatively, the crosspiece (100) is provided with a second notch (102); the second notch (102) is used to be opposite one of the connecting columns (21) to avoid the connecting column (21).

7. The connection structure according to any one of claims 1 to 6, characterized in that The crosspiece (100) comprises a crosspiece (110) and two connecting portions (120); the crosspiece (110) is arranged between and connects the two connecting portions (120), and the connecting portion (120) is used to be electrically connected to the battery cell module (20); the crosspiece (110) is elastic to buffer the impact force received by the connecting portion (120).

8. The connection structure according to claim 7, characterized by The connecting portion (120) is provided with a welding groove (121) on the side away from the battery cell module (20); the welding groove (121) corresponds to the pole column of the battery cell module (20), and the welding groove (121) is configured to reduce the thickness of the connecting portion (120) to be opposite the welding equipment to weld the connecting portion (120) to the battery cell module (20).

9. A battery pack, characterized by, The connecting structure (10) comprises at least two battery cell modules (20) and at least one connecting structure (10) according to any one of claims 1 to 8; the connecting structure (10) is used to connect two battery cell modules (20) in series.

10. A vehicle characterized by comprising: The battery pack according to claim 9 is arranged on the vehicle body.

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