Battery and electric device

Abstract

A battery (100) and an electric device, relating to the technical field of batteries. The battery (100) comprises a plurality of busbars (22), a plurality of battery cells (21), and sampling assemblies (30). The busbars (22) are electrically connected to the battery cells (21), and the plurality of busbars (22) and / or the plurality of battery cells (21) are all provided with sampling points. Each sampling assembly (30) comprises a plurality of wire harnesses (31); the plurality of wire harnesses (31) are used for connecting a plurality of sampling points; each wire harness (31) comprises a conductor (311) and an insulating housing (312), and the insulating housing (312) covers the outer side of the conductor (311); each wire harness (31) comprises a first wire harness section (314) and a second wire harness section (315); the first wire harness section (314) and a wire harness (31) connected to another sampling point are separated from each other; and the insulating housing (312) of the second wire harness section (315) and an insulating housing (312) of the wire harness (31) connected to another sampling point are connected to each other and form a weak structure (313) at the connection position. When being pulled, the wire harness (31) can be further separated from another wire harness (31) at the weak structure (313), mitigating rigid pulling of the wire harness (31), thus facilitating reducing the risk of failure or damage to the sampling assembly (30).

Description

Battery and electric device TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery and an electric device. BACKGROUND

[0002] In recent years, new energy vehicles have made a great leap in development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also increasing. Among them, the battery as a core component of new energy vehicles has higher requirements in terms of use stability and use reliability.

[0003] In the battery technology, in order to ensure the safety of the battery monomer, a sampling component is generally arranged in the battery, and the voltage and temperature of the battery monomer during use can be collected through the sampling component, so as to obtain the use condition of the battery. However, the existing sampling component in the battery often fails or is damaged during use, resulting in poor use stability of the battery and short service life.

[0004] SUMMARY

[0005] The embodiments of the present application provide a battery and an electric device, which can effectively improve the use stability and service life of the battery.

[0006] In a first aspect, the embodiments of the present application provide a battery, comprising a plurality of bus components, a plurality of battery monomers and a sampling component; the bus component is electrically connected to the battery monomer, and a sampling point is arranged on each of the plurality of bus components and / or the plurality of battery monomers; the sampling component comprises a plurality of wire harnesses, the plurality of wire harnesses are used to connect to a plurality of sampling points, the wire harness comprises a conductor and an insulating shell, the insulating shell is wrapped on the outer side of the conductor, the wire harness comprises a first wire harness segment and a second wire harness segment connected to each other in the extension direction of the wire harness, the first wire harness segment is connected to the sampling point, and the second wire harness segment away from one end of the first wire harness segment is used to be electrically connected to a battery management system; wherein the first wire harness segment of the wire harness is separated from the wire harness connected to other sampling points, and the insulating shell of the second wire harness segment of the wire harness is connected to the insulating shell of the wire harness connected to other sampling points and forms a weak structure at the connection.

[0007] In the technical solution, the insulating sheath of the second wire harness section of the wire harness of the sampling assembly is connected to the insulating sheaths of the wire harnesss connected to other sampling points, and a weak structure is formed at the connection, and the first wire harness section of the wire harness is separated from the weak structure with the wire harnesss connected to other sampling points, so that the first wire harness sections of the wire harnesss are connected to different sampling points, thereby obtaining information of different sampling points of the battery. When the first wire harness section of the wire harness is pulled due to shaking or expansion and contraction of the battery cells during use, the wire harness and other wire harnesss can be further separated from the weak structure, so that the first wire harness section of the wire harness has the ability to separate from other wire harnesss when subjected to external force, thereby buffering and absorbing the external force on the wire harness, reducing the phenomenon of rigid pulling of the first wire harness section of the wire harness, and reducing the phenomenon of breakage or connection failure of the wire harness of the sampling assembly during use, thereby reducing the risk of failure or damage of the sampling assembly during use, and improving the use stability and service life of the battery.

[0008] In some embodiments, the second wire harness sections of the plurality of wire harnesss extend in a first direction and are arranged side by side in a second direction, and the sampling assembly is located on one side of the plurality of battery cells in a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0009] In the technical solution, the sampling assembly is arranged on one side of the plurality of battery cells in the third direction. By arranging the second wire harness sections of the plurality of wire harnesss to extend in the first direction and arranging the second wire harness sections of the plurality of wire harnesss to be arranged in the second direction, on the one hand, the space occupied by the plurality of wire harnesss of the sampling assembly in the third direction can be saved, and wiring and assembly of the plurality of wire harnesss of the sampling assembly can be facilitated, and on the other hand, arranging the extension direction and arrangement direction of the second wire harness sections of the plurality of wire harnesss to be perpendicular to each other can further reduce the difficulty of further separating the wire harness from other wire harnesss from the weak structure when the wire harness is subjected to external force, thereby further reducing the pulling force on the first wire harness section of the wire harness, and further reducing the phenomenon of breakage or connection failure of the wire harness of the sampling assembly during use, thereby further improving the use stability and service life of the battery.

[0010] In some embodiments, along the second direction, the insulating sheaths of the second wire harness sections of the wire harnesss adjacent to each other and connected to different sampling points are connected to each other and form the weak structure at the connection.

[0011] In the technical solution, the weak structure is formed between the second harness segments of the adjacent harnesses connected to different sampling points, so that when the first harness segment is pulled, the harness and the adjacent harness connected to different sampling points can be further separated from the weak structure, the first harness segment has the ability to separate from the adjacent harness connected to different sampling points when the first harness segment is pulled by an external force, the part of the second harness segment can be further separated from the part of the adjacent harness connected to different sampling points to form the first harness segment, the weak structure between the second harness segment and the adjacent harness connected to different sampling points can buffer and absorb the external force, the first harness segment can be further elongated to compensate for the pulling phenomenon caused by the battery shaking or the expansion and contraction of the battery monomer, the rigid pulling phenomenon of the first harness segment is alleviated, and the phenomenon of the harness of the sampling assembly being broken or connection failure in use is reduced.

[0012] In some embodiments, along the second direction, the insulating shells of the second harness segments of the adjacent harnesses connected to the same sampling point are connected to each other and form the weak structure at the connection.

[0013] In the technical solution, the weak structure is formed between the second harness segments of the adjacent harnesses connected to the same sampling point, so that when the first harness segment is pulled, the harness and the adjacent harness connected to the same sampling point can be further separated from the weak structure, the rigid pulling phenomenon of the first harness segment is further alleviated, and the phenomenon of the harness of the sampling assembly being broken or connection failure in use is further reduced.

[0014] In some embodiments, the second harness segments of the plurality of harnesses form a harness body, the harness body has two opposite first surfaces in the third direction, at least one of the first surfaces is provided with a groove, and the groove is located between the conductors of the second harness segments of the two adjacent harnesses in the second direction, and the groove bottom wall forms the weak structure.

[0015] In the technical solution, the second harness segments of the plurality of harnesses form a harness body, a groove is arranged on at least one first surface of the harness body, and the groove is located between the conductors of the second harness segments of the two adjacent harnesses in the second direction, so that the structure strength of the area of the harness body provided with the groove is weakened, the groove bottom wall forms the weak structure between the two adjacent harnesses, the structure is simple, easy to manufacture, and the two adjacent harnesses can be separated when pulled by an external force.

[0016] In some embodiments, the two first surfaces are provided with the grooves and are located correspondingly along the third direction, and between the groove bottom surfaces of the two corresponding grooves along the third direction, the weak structure is formed.

[0017] In the above technical solution, by providing the grooves on the two first surfaces and oppositely arranging the two grooves along the third direction, the weak structure is formed between the groove bottom surfaces of the two corresponding grooves along the third direction, so as to further weaken the strength of the weak structure on the one hand, so as to facilitate the separation of the adjacent two wire harnesses when subjected to external force pulling, and on the other hand, to reduce the depth of the single groove processing, which is conducive to reducing the processing difficulty of the sampling assembly.

[0018] In some embodiments, the second wire harness segments of the plurality of wire harnesses extend along a first direction; wherein the second wire harness segments of at least two wire harnesses are arranged side by side along a second direction, and the second wire harness segments of the at least two wire harnesses are arranged in layers along a third direction, the insulating shells of the second wire harness segments of the wire harnesses adjacent along the second direction or along the third direction are connected to each other and form the weak structure at the connection, and the first direction, the second direction and the third direction are perpendicular to each other.

[0019] In the above technical solution, by arranging the second wire harness segments of at least two wire harnesses of the plurality of wire harnesses of the sampling assembly side by side along the second direction, and arranging the second wire harness segments of the at least two wire harnesses of the plurality of wire harnesses of the sampling assembly in layers along the third direction, a structure of multiple layers each including a plurality of wire harnesses arranged side by side along the second direction is formed, which is conducive to increasing the amount of wire harnesses of the sampling assembly.

[0020] In some embodiments, along the third direction, the busbar component and the sampling assembly are arranged on the same side of the plurality of battery monomers.

[0021] In the above technical solution, by arranging the busbar component and the sampling assembly on the same side of the plurality of battery monomers in the third direction, the battery with this structure can reduce the assembly difficulty between the first wire harness segment of the wire harness and the sampling point on the one hand, so as to improve the assembly efficiency of the battery, and on the other hand, the busbar component and the sampling assembly can share part of the space in the third direction, which is conducive to saving the space occupied by the battery in the third direction, and can optimize the layout between the battery monomers and the plurality of wire harnesses of the sampling assembly.

[0022] In some embodiments, the plurality of harnesses includes at least one voltage sampling line, the first harness segment of the voltage sampling line is a first segment, the second harness segment of the voltage sampling line is a second segment, the first segment is configured to be electrically connected with the sampling point, the first segment has a first position connected with the sampling point and a second position connected with the second segment, at least part of the first segment is curved so that the first segment forms a first curved segment between the first position and the second position.

[0023] In the above technical solution, by setting at least part of the first segment of the voltage sampling line to be curved, the first segment forms a first curved segment between the first position connected with the sampling point and the second position connected with the second segment, so that the length of the first segment is greater than the distance between the first position and the second position, the first curved segment can play a certain buffering role when the first segment is pulled, and the first curved segment can absorb and adapt the displacement of the sampling point relative to the sampling assembly in multiple directions, thereby further reducing the pulling force on the first segment of the voltage sampling line during use, and further alleviating the phenomenon of breakage or connection failure of the voltage sampling line of the sampling assembly during use.

[0024] In some embodiments, the first segment includes a straight segment and the first curved segment, the first curved segment connects the straight segment and the second segment, and the straight segment is electrically connected with the sampling point.

[0025] In the above technical solution, the first segment of the voltage sampling line is provided with a straight segment and a first curved segment, and the first curved segment of the first segment is directly connected with the second segment of the voltage sampling line, so that the connection position of the first curved segment and the second segment is located at the position of the stripping point where the voltage sampling line and the adjacent harness are stripped from each other, thereby realizing the structure that the curved part of the first segment is connected with the second segment, which is beneficial to further reduce the difficulty of further stripping the voltage sampling line from the weak structure when the voltage sampling line is pulled by external force, to further reduce the pulling force on the first segment of the voltage sampling line, and to further alleviate the phenomenon of breakage or connection failure of the voltage sampling line of the sampling assembly during use, thereby improving the use stability and service life of the battery.

[0026] In some embodiments, the second segment extends along a first direction, the sampling point is located on one side of the second segment in a second direction, and the second direction is perpendicular to the first direction; wherein one end of the second segment away from the first segment forms a first end, the first end is configured to be electrically connected with the battery management system, and the first curved segment is curved from the straight segment in a direction in which the first end points to the second position.

[0027] In the technical solution, the first curved section is arranged to be curved from the straight section in a direction pointing from the first end to the second position, so that the first curved section is curved away from the first end of the second section in the first direction, and the first curved section is formed on the side of the straight section away from the first end in the first direction. On the one hand, the difficulty of forming the first curved section is reduced, which is conducive to reducing the manufacturing difficulty of the battery. On the other hand, when the voltage sampling line is pulled by an external force, it is easier to further separate from other wire harnesses from the weak structure, so as to further reduce the pulling force on the first section of the voltage sampling line, and thus the phenomenon of breakage of the voltage sampling line of the sampling assembly or disconnection of the voltage sampling line from the busbar during use can be further alleviated.

[0028] In some embodiments, the straight section extends in the second direction.

[0029] In the technical solution, the straight section of the first section is arranged to extend in the second direction, so that the straight section is connected to the sampling point located on the side of the second section in the second direction, which is conducive to reducing the assembly difficulty of the straight section and the busbar, and optimizing the layout between the sampling assembly and the busbar.

[0030] In some embodiments, the first section is used to be electrically connected to the busbar, the busbar is connected with a fuse device, and an end of the first section away from the second section is connected to the fuse device to electrically connect the first section and the busbar.

[0031] In the technical solution, the busbar of the battery is connected with a fuse device, and the first section of the voltage sampling line is electrically connected to the busbar through the fuse device, so that when the battery monomer or the sampling assembly is short-circuited, the fuse device can disconnect the electrical connection between the busbar and the voltage sampling line, so as to realize the disconnection of the battery monomer and the sampling assembly, and alleviate the phenomenon of further damage to the battery monomer or the sampling assembly, thereby effectively improving the use stability and service life of the battery.

[0032] In some embodiments, the busbar component is disposed on one side of the plurality of battery cells along a third direction, and the fuse device is disposed on a side of the busbar component away from the battery cells; the fuse device comprises a conductive layer, a first insulating layer and a second insulating layer, the first insulating layer and the second insulating layer are stacked and connected along the third direction, the conductive layer is disposed between the first insulating layer and the second insulating layer, the conductive layer comprises a first conductive region, a fuse and a second conductive region, the first conductive region and the second conductive region are spaced apart, the first conductive region is connected to the busbar component, the second conductive region is connected to the first section, the fuse connects the first conductive region and the second conductive region, and at least part of the first insulating layer is located between the second conductive region and the busbar component along the third direction to insulate and separate the second conductive region and the busbar component.

[0033] In the above technical solution, the fuse device is provided with a conductive layer, a first insulating layer and a second insulating layer, the conductive layer comprises a first conductive region, a fuse and a second conductive region connected in sequence, the first conductive region and the second conductive region are connected to the busbar component and the first section of the voltage sampling line respectively, so that the voltage sampling line of the sampling assembly can be electrically connected to the busbar component through the conductive layer, and when the battery cell is short-circuited or the sampling assembly is short-circuited, the fuse of the conductive layer can be melted to disconnect the electrical connection between the first conductive region and the second conductive region, so that the battery cell and the sampling assembly can be disconnected. By stacking and connecting the first insulating layer and the second insulating layer along the third direction, the first insulating layer and the second insulating layer can clamp and assemble the conductive layer, at least part of the first insulating layer is located between the second conductive region and the busbar component, and the battery with this structure can form an insulating structure on both sides of the conductive layer in the third direction, which is beneficial to further increase the creepage distance between the conductive layer and other components, and is beneficial to further reduce the lap phenomenon between the conductive layer and other components, thereby further reducing the risk of internal short circuit of the battery during use, and improving the use reliability of the battery. On the other hand, the first insulating layer and the second insulating layer can stabilize the conductive layer, which is beneficial to further improve the assembly stability of the fuse device on the busbar component, thereby effectively improving the use stability and service life of the battery.

[0034] In some embodiments, the projection of the fuse device is located in the busbar component along the third direction.

[0035] In the technical scheme, the projection of the fuse device in the third direction is arranged in the whole busbar component, which can improve the assembly stability of the fuse device arranged on the busbar component, reduce the risk of the fuse device falling off, relieve the knocking phenomenon between the fuse device and other components, reduce the lap phenomenon between the conductive layer of the fuse device and other components, reduce the risk of internal short circuit of the battery in use, and improve the use reliability of the battery.

[0036] In some embodiments, a gap is formed between the first conductive region and the second conductive region; and in the third direction, the first insulating layer and the second insulating layer are connected to each other in a region corresponding to the gap, so as to separate the first conductive region and the second conductive region.

[0037] In the technical scheme, the first insulating layer and the second insulating layer are connected to each other in the third direction in a region corresponding to the gap between the first conductive region and the second conductive region, so that the first insulating layer and the second insulating layer can also insulate and separate the first conductive layer and the second conductive layer, thereby achieving the physical separation between the first conductive region and the second conductive region, increasing the creepage distance between the first conductive region and the second conductive region, relieving the mis-lap phenomenon between the first conductive region and the second conductive region, and reducing the risk of failure of the fuse device.

[0038] In some embodiments, the edge region of the first insulating layer and the edge region of the second insulating layer are connected to each other, and the first insulating layer and the second insulating layer jointly define a containing space, and the conductive layer is contained in the containing space.

[0039] In the technical scheme, the edge region of the first insulating layer and the edge region of the second insulating layer are connected to each other, so that the first insulating layer and the second insulating layer can jointly form a containing space for containing the conductive layer. The battery with such a structure can further reduce the lap phenomenon between the conductive layer and other components, thereby further reducing the risk of internal short circuit of the battery in use, improving the use reliability of the battery, further improving the stability of the first insulating layer and the second insulating layer to the conductive layer, improving the structural stability of the fuse device, and further improving the assembly stability of the fuse device arranged on the busbar component.

[0040] In some embodiments, the first insulating layer is provided with a first window configured to expose a part of the first conductive region, and the exposed part of the first conductive region is connected to the busbar component.

[0041] In the technical solution, the first window is arranged on the first insulating layer and can expose a part of the first conductive area of the conductive layer in the third direction, so that the busbar component and the exposed area of the first conductive area are connected with each other, the connection difficulty between the busbar component and the first conductive area is reduced, and the connection quality between the busbar component and the first conductive area is improved.

[0042] In some embodiments, a projection of the first window in the third direction is located in the first conductive area.

[0043] In the technical solution, the projection of the first window in the third direction is located in the first conductive area, which can relieve the phenomenon that the exposed area of the first conductive area is too large, reduce the risk of lap joint between the first conductive area and other components, relieve the phenomenon that the edge of the first conductive area is exposed, improve the stability of the first conductive area arranged between the first insulating layer and the second insulating layer, and reduce the risk that the first conductive area falls off from the first window.

[0044] In some embodiments, the first conductive area is welded to the busbar component, the second insulating layer is provided with a second window configured to expose a part of the first conductive area, and a projection of the second window in the third direction coincides with a projection of the first window in the third direction.

[0045] In the technical solution, the second window configured to expose a part of the first conductive area is arranged on the second insulating layer, and the second window and the first window are in a structure in which the projections in the third direction coincide with each other, so that the first conductive area and the busbar component are welded from the side of the first conductive area away from the busbar component and at a position corresponding to the second window, and the overlapping area of the second window and the first window in the third direction does not need to be positioned when the first conductive area and the busbar component are welded, which can reduce the difficulty of welding the first conductive area and the busbar component to each other, improve the assembly efficiency of the battery, does not need to penetrate the second insulating layer when the first conductive area and the busbar component are welded, reduces the welding power required for welding the first conductive area and the busbar component, and effectively improves the welding quality between the first conductive area and the busbar component.

[0046] In some embodiments, the second insulating layer is provided with a third window configured to expose a part of the second conductive area, and the exposed part of the second conductive area is connected to the first segment.

[0047] In the technical solution, the third window is arranged on the second insulating layer and can expose a part of the second conductive area of the conductive layer in the third direction, so that the first section of the voltage sampling line and the exposed area of the second conductive area are connected to each other, which facilitates the connection between the first section of the voltage sampling line and the second conductive area and improves the connection quality between the first section of the voltage sampling line and the second conductive area.

[0048] In some embodiments, a projection of the third window in the third direction is located in the second conductive area.

[0049] In the technical solution, the projection of the third window in the third direction is located in the second conductive area, which can alleviate the phenomenon that the exposed area of the second conductive area is too large, reduce the risk of lap joint between the second conductive area and other components, alleviate the phenomenon that the edge of the second conductive area is exposed, improve the stability of the second conductive area arranged between the first insulating layer and the second insulating layer, and reduce the risk of the second conductive area falling off from the third window.

[0050] In some embodiments, the first insulating layer and the second insulating layer are connected by thermal compounding.

[0051] In the technical solution, the first insulating layer and the second insulating layer are connected by thermal compounding, which can improve the connection reliability of the first insulating layer and the second insulating layer, improve the structural stability and reliability of the conductive layer arranged between the first insulating layer and the second insulating layer, and reduce the assembly difficulty of the first insulating layer and the second insulating layer, thereby improving the assembly efficiency of the fuse device.

[0052] In some embodiments, the first conductive area and the bus component are connected by welding, and the second conductive area and the conductor of the first section are connected by welding.

[0053] In the technical solution, the first conductive area and the bus component are connected by welding, which can improve the connection reliability between the first conductive area and the bus component, reduce the risk of the fuse device failing due to the disconnection between the first conductive area and the bus component, and improve the overcurrent capacity between the first conductive area and the bus component. Similarly, the second conductive area and the conductor of the first section are connected by welding, which can improve the connection reliability between the second conductive area and the first section of the voltage sampling line, reduce the risk of the fuse device failing due to the disconnection between the second conductive area and the first section of the voltage sampling line, and improve the overcurrent capacity between the second conductive area and the first section of the voltage sampling line.

[0054] In some embodiments, the conductive layer includes a first foil and a second foil which are connected in composite along the third direction, the first foil is located on the side of the second foil facing the busbar component in the third direction, the first foil is welded to the part of the first conductive area and the busbar component, and the second foil is welded to the part of the second conductive area and the conductor of the first section; wherein the material of the busbar component is different from the material of the conductor of the first section, the material of the first foil is the same as the material of the busbar component, and the material of the second foil is the same as the material of the conductor of the first section.

[0055] In the above technical solution, the conductive layer is provided with a first foil and a second foil which are connected in composite along the third direction, and the first foil is located on the side of the second foil facing the busbar component in the third direction. By setting the material of the first foil to be the same as the material of the busbar component, and welding the first foil to the part of the first conductive area and the busbar component, and by setting the material of the second foil to be the same as the material of the conductor of the first section, and welding the second foil to the part of the second conductive area and the conductor of the first section, the structure of the first conductive area and the busbar component being welded in the same material is realized, and the structure of the second conductive area and the conductor of the first section being welded in the same material is realized. On the one hand, the welding difficulty between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section is reduced, and on the other hand, the quality problem caused by the mutual welding connection between different materials is alleviated, which is beneficial to improving the welding quality between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section.

[0056] In some embodiments, the materials of the conductive layer, the busbar component and the conductor of the first section are the same.

[0057] In the above technical solution, by setting the conductive layer, the busbar component and the conductor of the first section of the safety device to be the same material, the structure of the first conductive area and the busbar component and the structure of the second conductive area and the conductor of the first section being welded in the same material are realized. On the one hand, the welding difficulty between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section is reduced, and on the other hand, the quality problem caused by the mutual welding connection between different materials is alleviated, which is beneficial to improving the welding quality between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section.

[0058] In some embodiments, the material of the busbar component is different from the material of the conductor of the first section, the material of the first conductive area is the same as the material of the busbar component, and the material of the second conductive area is the same as the material of the conductor of the first section.

[0059] In the technical scheme, the material of the first conductive area of the conductive layer is set to be the same as that of the busbar component, and the material of the second conductive area of the conductive layer is set to be the same as that of the conductor of the first section, so as to realize the structure that the first conductive area and the busbar component are welded and connected in the same material, and the structure that the second conductive area and the conductor of the first section are welded and connected in the same material. On one hand, the welding difficulty between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section can be reduced. On the other hand, the quality problem caused by the mutual welding connection between different materials can be alleviated, and the welding quality between the first conductive area and the busbar component and between the second conductive area and the conductor of the first section can be improved.

[0060] In some embodiments, the sampling assembly further comprises a temperature detection member disposed on the sampling point, the temperature detection member being configured to detect the temperature of the busbar component or the battery monomer; wherein the plurality of wire harnesses comprises at least one temperature sampling wire group, the temperature sampling wire group comprising two temperature sampling wires with opposite polarities, the first wire harness section of the temperature sampling wire being a third section, the second wire harness section of the temperature sampling wire being a fourth section, the third section being electrically connected to the temperature detection member, and the fourth section being used to be electrically connected to a battery management system at an end away from the third section.

[0061] In the technical scheme, the sampling assembly further comprises a temperature detection member, the temperature detection member being electrically connected to the two temperature sampling wires in the temperature sampling wire group, and the temperature detection member being disposed on the sampling point, so that the sampling assembly can further obtain the temperature of the busbar component or the battery monomer in the battery during use.

[0062] In some embodiments, the fourth sections of the two temperature sampling wires in the temperature sampling wire group are adjacent and connected.

[0063] In the technical scheme, the fourth sections of the two temperature sampling wires in the same temperature sampling wire group are set to be adjacent and connected. On one hand, the two temperature sampling wires can be stripped from other wire harnesses at the same time and then stripped from each other, so as to reduce the forming difficulty of the third sections of the two temperature sampling wires. On the other hand, the spacing between the third sections of the two temperature sampling wires in the same temperature sampling wire group can be alleviated, so as to reduce the connection difficulty between the third sections of the two temperature sampling wires and the temperature detection member.

[0064] In some embodiments, the third sections of the two temperature sampling wires in the temperature sampling wire group are spaced apart.

[0065] In the technical scheme, the third sections of the two temperature sampling lines in the same temperature sampling line group are arranged in a spaced manner, so as to relieve the direct interference between the third sections of the two temperature sampling lines and reduce the risk of short circuit between the third sections of the two temperature sampling lines.

[0066] In some embodiments, the temperature detection member has a positive connection line and a negative connection line, the positive connection line and the negative connection line are connected to the third sections of the two temperature sampling lines in the temperature sampling line group respectively, so as to electrically connect the temperature detection member and the two temperature sampling lines in the temperature sampling line group.

[0067] In the technical scheme, the temperature detection member is provided with a positive connection line and a negative connection line, and the positive connection line and the negative connection line are connected to the third sections of the two temperature sampling lines in the temperature sampling line group respectively, so as to electrically connect the temperature detection member and the two temperature sampling lines in the temperature sampling line group. The sampling assembly with this structure can reduce the assembly difficulty of the temperature detection member and the temperature sampling line, and is beneficial to improving the assembly efficiency of the sampling assembly.

[0068] In some embodiments, at least one of the positive connection line and the third section connected thereto is formed with a second curved section; and / or, at least one of the negative connection line and the third section connected thereto is formed with a third curved section.

[0069] In the technical scheme, the second curved section is formed on at least one of the positive connection line and the third section connected thereto, so that at least one of the positive connection line and the third section connected thereto is formed in a curved structure. The second curved section can play a certain buffering role when the positive connection line and the third section connected thereto are pulled, and the second curved section can absorb and adapt the displacement of the sampling point relative to the sampling assembly in multiple directions, thereby further reducing the pulling force of the positive connection line and the third section of the temperature sampling line connected thereto during use, so as to reduce the risk of damage or failure of the sampling assembly during use. Similarly, the third curved section is formed on at least one of the negative connection line and the third section connected thereto, so that at least one of the negative connection line and the third section connected thereto is formed in a curved structure. The third curved section can play a certain buffering role when the negative connection line and the third section connected thereto are pulled, and the third curved section can absorb and adapt the displacement of the sampling point relative to the sampling assembly in multiple directions, thereby further reducing the pulling force of the negative connection line and the third section of the temperature sampling line connected thereto during use, so as to reduce the risk of damage or failure of the sampling assembly during use.

[0070] In some embodiments, the positive electrode connecting wire and the corresponding connecting position of the third section are arranged at intervals with the negative electrode connecting wire and the corresponding connecting position of the third section.

[0071] In the above technical solution, by arranging the positive electrode connecting wire and the corresponding connecting position of the third section at intervals with the negative electrode connecting wire and the corresponding connecting position of the third section, the interference between them is reduced, which is conducive to reducing the connection difficulty between the positive electrode connecting wire and the corresponding third section and the negative electrode connecting wire and the corresponding third section, and can reduce the risk of short circuit between the positive electrode connecting wire and the negative electrode connecting wire and between the two temperature sampling lines.

[0072] In some embodiments, the distance between the positive electrode connecting wire and the corresponding connecting position of the third section and the negative electrode connecting wire and the corresponding connecting position of the third section is greater than or equal to 5 mm.

[0073] In the above technical solution, by arranging the distance between the positive electrode connecting wire and the corresponding connecting position of the third section and the negative electrode connecting wire and the corresponding connecting position of the third section to be greater than or equal to 5 mm, the interval distance between the positive electrode connecting wire and the corresponding connecting position of the third section and the negative electrode connecting wire and the corresponding connecting position of the third section is further improved, which is conducive to further reducing the risk of short circuit between the positive electrode connecting wire and the negative electrode connecting wire and between the two temperature sampling lines.

[0074] In some embodiments, the positive electrode connecting wire and the corresponding third section are welded; and / or, the negative electrode connecting wire and the corresponding third section are welded.

[0075] In the above technical solution, by arranging the positive electrode connecting wire and the corresponding third section of the temperature sampling line to be welded to each other, on the one hand, the connection reliability between the positive electrode connecting wire and the corresponding third section of the temperature sampling line is improved, so as to reduce the risk of connection failure of the positive electrode connecting wire and the corresponding third section of the temperature sampling line, and on the other hand, the overcurrent capacity between the positive electrode connecting wire and the corresponding temperature sampling line is improved. Similarly, by arranging the negative electrode connecting wire and the corresponding third section of the temperature sampling line to be welded to each other, on the one hand, the connection reliability between the negative electrode connecting wire and the corresponding third section of the temperature sampling line is improved, so as to reduce the risk of connection failure of the negative electrode connecting wire and the corresponding third section of the temperature sampling line, and on the other hand, the overcurrent capacity between the negative electrode connecting wire and the corresponding temperature sampling line is improved.

[0076] In some embodiments, the temperature detection member is clamped on the bus member.

[0077] In the technical scheme, the temperature detection member is arranged to be clamped on the bus member, so that the temperature detection member can detect the temperature of the bus member or the battery monomer. The battery with the structure can reduce the assembly difficulty of the temperature detection member, improve the assembly efficiency of the battery, facilitate the disassembly and replacement of the temperature detection member, and reduce the difficulty of the later maintenance of the battery.

[0078] In some embodiments, the bus member is provided with a clamping groove, and at least part of the temperature detection member is clamped in the clamping groove.

[0079] In the technical scheme, the clamping groove is arranged on the bus member, and at least part of the temperature detection member is clamped in the clamping groove, so that the temperature detection member is clamped on the bus member. The structure is simple and convenient to assemble.

[0080] In some embodiments, the insulating shells of the plurality of wire harnesses are integrally formed.

[0081] In the technical scheme, the insulating shells of the plurality of wire harnesses are arranged to be integrally formed, so that the connection position of the insulating shell of the second wire harness segment of the two wire harnesses connected to different sampling points forms a weak structure. The sampling assembly with the structure can reduce the forming difficulty of the weak structure between the insulating shells of the plurality of wire harnesses, improve the forming efficiency, and improve the production efficiency of the sampling assembly.

[0082] In some embodiments, the insulating shells of the plurality of wire harnesses are separately arranged, and the insulating shell of the second wire harness segment of the wire harness is adhesively connected to the insulating shell of the wire harness connected to other sampling points.

[0083] In the technical scheme, the insulating shells of the plurality of wire harnesses are arranged to be separately arranged, and the insulating shells of the second wire harness segments of the two wire harnesses connected to different sampling points are adhesively connected, so that a weak structure is formed at the adhesive position of the insulating shells of the second wire harness segments of the two wire harnesses connected to different sampling points. The sampling assembly with the structure can expand the number of wire harnesses according to the actual situation, so as to adapt to different batteries, and improve the application range of the sampling assembly.

[0084] In some embodiments, the sampling assembly further comprises a connector connected to one end of the second wire harness segment of the plurality of wire harnesses away from the first wire harness segment, and the connector is used for plug-in cooperation with the battery management system to electrically connect the wire harness and the battery management system.

[0085] In the technical scheme, the sampling assembly is further provided with a connector, and the same end of the second wire harness segment of each wire harness is connected with the connector, so that the electrical connection between the multiple wire harnesses and the battery management system can be realized by the plug connection of the connector and the battery management system, thereby reducing the assembly difficulty between the sampling assembly and the battery management system, improving the assembly efficiency between the sampling assembly and the battery management system, facilitating the replacement and maintenance of the sampling assembly, and reducing the later maintenance cost of the battery.

[0086] In some embodiments, the battery further comprises an insulating member; the insulating member is arranged between the sampling assembly and the multiple battery monomers to insulate and separate the sampling assembly and the battery monomers.

[0087] In the technical scheme, the insulating member is arranged between the sampling assembly and the multiple battery monomers, so that the insulating member can insulate and separate the sampling assembly and the battery monomers, thereby reducing the risk of the sampling assembly and the battery monomers being connected in series, alleviating the internal short circuit of the battery during use, and improving the use reliability of the battery.

[0088] In some embodiments, the battery comprises multiple battery modules, and each battery module comprises the multiple current conduction components and the multiple battery monomers; the battery further comprises multiple sampling assemblies, and each battery module is provided with one sampling assembly.

[0089] In the technical scheme, the battery is provided with multiple battery modules and multiple sampling assemblies, and each sampling assembly is arranged corresponding to one battery module, so that the assembly difficulty between the sampling assembly and the battery module can be reduced while improving the electric capacity of the battery, thereby reducing the sampling difficulty of the battery module.

[0090] In some embodiments, along a third direction, the current conduction component is arranged on one side of the multiple battery monomers, and the sampling assembly is arranged on the side of the multiple battery monomers provided with the current conduction component; the battery further comprises a box body, the box body comprises a first box body and a second box body arranged along the third direction, the first box body and the second box body are overlapped with each other and jointly define an assembly space, and the assembly space is used for accommodating the battery monomers and the sampling assembly.

[0091] In the technical solution, the busbar component and the sampling assembly are arranged on the same side of the plurality of battery monomers in the third direction, and the cover closing direction of the first box body and the second box body of the box body is arranged to be the same as the arrangement direction of the sampling assembly and the battery monomers, so that on one hand, the assembly difficulty between the battery monomers and the sampling assembly can be reduced, and the assembly difficulty of the battery monomers and the sampling assembly into the box body can be reduced, so as to improve the assembly efficiency of the battery, and on the other hand, the sampling assembly can be conveniently maintained or replaced after the first box body and the second box body are opened, which is beneficial to reduce the later maintenance cost of the battery.

[0092] In a second aspect, the embodiments of the present application further provide a power utilization device, comprising the battery described above, and the battery is used to provide electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0093] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0094] Fig. 1 is a structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0095] Fig. 2 is an exploded view of a battery provided by some embodiments of the present application;

[0096] Fig. 3 is an assembly schematic diagram of a battery module and a sampling assembly provided by some embodiments of the present application;

[0097] Fig. 4 is a top view of the battery module and the sampling assembly in the third direction after being assembled with each other provided by some embodiments of the present application;

[0098] Fig. 5 is a partial enlarged view of A of the battery module and the sampling assembly provided by some embodiments of the present application;

[0099] Fig. 6 is a structural schematic diagram of a sampling assembly provided by some embodiments of the present application;

[0100] Fig. 7 is a partial enlarged view of B of the sampling assembly shown in Fig. 6;

[0101] Fig. 8 is a cross-sectional view of a wiring harness body of the sampling assembly provided by some embodiments of the present application, which is perpendicular to the first direction;

[0102] Fig. 9 is a partial structural schematic diagram of a battery module provided by some embodiments of the present application;

[0103] Fig. 10 is a structural schematic diagram of a safety device provided by some embodiments of the present application;

[0104] Fig. 11 is an exploded view of the safety device according to some embodiments of the present application;

[0105] Fig. 12 is a structural schematic view of the conductive layer of the safety device according to some embodiments of the present application;

[0106] Fig. 13 is a front view of the safety device facing the first insulating layer in the third direction according to some embodiments of the present application;

[0107] Fig. 14 is a front view of the safety device facing the second insulating layer in the third direction according to some embodiments of the present application;

[0108] Fig. 15 is a sectional view of the conductive layer of the safety device perpendicular to the first direction according to some embodiments of the present application.

[0109] Fig. 13 is a front view of the safety device facing the first insulating layer in the third direction according to some embodiments of the present application; DETAILED DESCRIPTION

[0110] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0111] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms used in disclosing the application, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms used in the description of the

[0112] Reference throughout this application to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, nor are they necessarily all mutually exclusive embodiments.

[0113] In the description of the application, it is necessary to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "attaching" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0114] In the application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. In addition, the character " / " in the application generally represents that the front and rear associated objects have an "or" relationship.

[0115] In the embodiments of the application, the same reference signs represent the same parts, and for the sake of brevity, the detailed description of the same parts is omitted in different embodiments. It should be understood that the thickness, length and width of various components in the embodiments of the application shown in the drawings, and the overall thickness, length and width of the integrated device are only exemplary and should not constitute any limitation on the application.

[0116] "Multiple" appearing in the application means two or more (including two).

[0117] In the embodiments of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be activated by charging after discharging.

[0118] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc. The embodiments of the present application are not limited thereto.

[0119] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging of the battery cell, active ions (e.g., lithium ions) are inserted and extracted between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, and can prevent the positive and negative electrodes from short-circuiting while allowing the active ions to pass through.

[0120] In some embodiments, the positive electrode can be a positive electrode sheet, which can include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0121] In some embodiments, the negative electrode can be a negative electrode sheet, which can include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0122] In some embodiments, the material of the positive electrode current collector can be aluminum, and the material of the negative electrode current collector can be copper.

[0123] In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

[0124] In some embodiments, the separator is a separator film. The separator film can be of various types, and any known porous structure separator film with good chemical stability and mechanical stability can be used.

[0125] As an example, the material of the separator film can include at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride. The separator film can be a single-layer film or a multi-layer composite film. When the separator film is a multi-layer composite film, the materials of the layers can be the same or different. The separator can be a separate component located between the positive and negative electrodes, or can be attached to the surface of the positive and negative electrodes.

[0126] In some embodiments, the separator is a solid-state electrolyte. The solid-state electrolyte is disposed between the positive electrode and the negative electrode, and functions to transport ions and separate the positive and negative electrodes.

[0127] In some embodiments, the battery cell further includes an electrolyte, which functions to conduct ions between the positive and negative electrodes. The electrolyte can be in a liquid state, a gel state, or a solid state. Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0128] In some embodiments, the electrode assembly is in a roll structure. The positive electrode sheet and the negative electrode sheet are rolled into a roll structure.

[0129] In some embodiments, the electrode assembly is a stack structure.

[0130] As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets are alternately stacked.

[0131] As an example, a plurality of positive electrode sheets are provided, and a negative electrode sheet is folded to form a plurality of folded segments which are stacked.

[0132] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form a plurality of folded segments which are stacked.

[0133] As an example, a plurality of separators are provided, and each of the separators is provided between any adjacent positive electrode sheet or negative electrode sheet.

[0134] As an example, the separators are continuously provided, and each of the separators is provided between any adjacent positive electrode sheet or negative electrode sheet by folding or winding.

[0135] In some embodiments, the electrode assembly can have a cylindrical shape, a flat shape, or a multi-prism shape, etc.

[0136] In some embodiments, the electrode assembly is provided with a tab, and the tab can guide current out of the electrode assembly. The tab includes a positive tab and a negative tab.

[0137] In some embodiments, the battery cell can include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0138] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes, and the prismatic battery cell includes but is not limited to a square battery cell, a blade battery cell, a multi-prismatic battery cell, such as a hexagonal prismatic battery cell, etc.

[0139] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0140] In some embodiments, the battery can be a battery module, and when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form a battery module.

[0141] In some embodiments, the battery can be a battery pack, and the battery pack includes a box body and a battery cell, and the battery cell or the battery module is accommodated in the box body.

[0142] In some embodiments, the box can be part of a chassis structure of a vehicle. For example, portions of the box can become at least part of a floor of the vehicle, or portions of the box can become at least part of cross members and longitudinal members of the vehicle.

[0143] In some embodiments, the battery can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0144] The battery has the advantages of high energy density, small environmental pollution, large power density, long service life, wide adaptability, and small self-discharge coefficient, and is an important part of the development of new energy today. The development of battery technology needs to consider many design factors, such as energy density, cycle life, discharge capacity, and charge-discharge rate. In addition, the safety of the battery also needs to be considered.

[0145] For a general battery, the battery includes a box and a plurality of battery monomers arranged in the box. The plurality of battery monomers are electrically connected by a busbar component to realize series connection or parallel connection between the plurality of battery monomers. In the related art, in order to ensure the safety of the battery monomers, a sampling assembly is generally arranged in the battery. The sampling assembly can collect the voltage and temperature of the battery monomers during use to obtain the use condition of the battery. The sampling assembly generally includes a wire harness body and branch wire harnesses. The wire harness body is bundled by a plurality of wire harnesses. Each branch wire harness is connected to one wire harness in the wire harness body, and the branch wire harness is electrically connected to the busbar component of the battery monomer or a temperature sensor arranged on the busbar component to obtain the voltage or temperature of the battery monomer through the sampling assembly. However, the battery of this structure will appear expansion and contraction phenomenon of the battery monomers during use, and the use condition of the battery is relatively complex, so that the branch wire harness will appear pulling phenomenon, thereby causing the branch wire harness to easily appear fracture or connection failure with the busbar component during use, which causes the sampling assembly to have the risk of failure or damage during use, thereby being not conducive to improving the use stability and service life of the battery.

[0146] In view of the above, in order to solve the problems of poor use stability and short service life of the battery, the application provides a battery, which comprises a plurality of bus components, a plurality of battery monomers and a sampling assembly. The bus components are electrically connected to the battery monomers, and the plurality of bus components and / or the plurality of battery monomers are provided with sampling points. The sampling assembly comprises a plurality of wire harnesses, the plurality of wire harnesses are used to be connected to the plurality of sampling points, the wire harness comprises a conductor and an insulating shell, the insulating shell is wrapped on the outer side of the conductor, and the wire harness comprises a first wire harness segment and a second wire harness segment which are connected to each other in the extension direction of the wire harness. The first wire harness segment of the wire harness is separated from the wire harness connected to other sampling points, the insulating shell of the second wire harness segment of the wire harness is connected to the insulating shell of the wire harness connected to other sampling points and forms a weak structure at the connection, and the end of the second wire harness segment away from the first wire harness segment is used to be electrically connected to the battery management system.

[0147] In the battery with the above structure, the insulating shell of the second wire harness segment of the wire harness of the sampling assembly is connected to the insulating shell of the wire harness connected to other sampling points and forms a weak structure at the connection, and the first wire harness segment of the wire harness is separated from the wire harness connected to other sampling points from the weak structure, so that the first wire harness segments of the plurality of wire harnesses are connected to different sampling points, thereby the information of different sampling points of the battery can be obtained. When the first wire harness segment of the wire harness is pulled due to shaking or expansion and contraction of the battery monomers during use, the wire harness and other wire harnesses can be further separated from the weak structure, so that the first wire harness segment of the wire harness has the ability to separate from other wire harnesses when subjected to external force, thereby the weak structure between the second wire harness segment of the wire harness and other wire harnesses can buffer and absorb the external force received by the wire harness, so as to relieve the rigid pulling phenomenon of the first wire harness segment of the wire harness, thereby reducing the breaking or connection failure phenomenon of the wire harness of the sampling assembly during use, reducing the risk of failure or damage of the sampling assembly during use, and improving the use stability and service life of the battery.

[0148] The battery disclosed in the application can be used in an electric device such as a vehicle, a ship or an aircraft, but is not limited thereto. The power supply system of the electric device can be composed of the battery disclosed in the application, so as to relieve the failure or damage of the sampling assembly in the battery during use, and improve the use stability and service life of the battery.

[0149] The application provides an electric device using the battery as a power supply. The electric device can be a mobile phone, a tablet computer, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric aircraft toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle and a spacecraft, etc.

[0150] The following embodiments are described by taking a vehicle as an example of a power utilization device in an embodiment of the present application.

[0151] Please refer to FIG. 1, which is a structural schematic diagram of a vehicle 1000 provided by some embodiments of the present application. The vehicle 1000 can be a fuel automobile, a gas automobile, or a new energy automobile, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended electric vehicle, etc. The vehicle 1000 is internally provided with a battery 100, which can be arranged at the bottom of the vehicle 1000, or at the head of the vehicle 1000, or at the tail of the vehicle 1000. The battery 100 can be used to supply power for the vehicle 1000, for example, the battery 100 can be used as an operating power source or a usage power source of the vehicle 1000, etc. The vehicle 1000 can further include a controller 200 and a motor 300, the controller 200 is used to control the battery 100 to supply power for the motor 300, for example, to meet the power demand of the vehicle 1000 during starting, navigation, and driving.

[0152] In some embodiments of the present application, the battery 100 can not only be used as an operating power source or a usage power source of the vehicle 1000, but also be used as a driving power source of the vehicle 1000, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1000.

[0153] Please refer to FIG. 2, FIG. 3, and FIG. 4, FIG. 2 is an exploded structural diagram of the battery 100 provided by some embodiments of the present application, FIG. 3 is an assembly schematic diagram of a battery module 20 and a sampling assembly 30 provided by some embodiments of the present application, and FIG. 4 is a top view of the battery module 20 and the sampling assembly 30 in the third direction Z after being assembled with each other. The battery 100 includes a box body 10 and at least one battery module 20, the battery module 20 is accommodated in the box body 10, and the battery module 20 includes a plurality of battery monomers 21 stacked along a first direction X.

[0154] The box body 10 is used to provide an assembly space for the battery module 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 can include a first box body 11 and a second box body 12, the first box body 11 and the second box body 12 are overlapped with each other along the third direction Z, and the first box body 11 and the second box body 12 jointly define an assembly space for accommodating the battery module 20. The second box body 12 can be a hollow structure with one end open, and the first box body 11 can be a plate-shaped structure, which is overlapped with the open side of the second box body 12 to jointly define the assembly space with the second box body 12; the first box body 11 and the second box body 12 can also be hollow structures with one side open, and the open side of the first box body 11 is overlapped with the open side of the second box body 12.

[0155] Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be in various shapes, such as a cylinder, a cuboid, or a square, etc. Exemplarily, in FIG. 2, the shape of the box body 10 is a cuboid.

[0156] Optionally, in the battery 100, the battery module 20 accommodated in the box body 10 can be one or multiple. When the battery module 20 arranged in the box body 10 is multiple, the multiple battery modules 20 can be in series connection, parallel connection, or mixed connection, where the mixed connection means that the multiple battery modules 20 are in both series connection and parallel connection. The multiple battery modules 20 can be directly connected in series, parallel, or mixed connection, and then the whole of the multiple battery modules 20 is accommodated in the box body 10.

[0157] Exemplarily, in combination with FIGS. 2 and 3, the battery 100 includes two battery modules 20, the two battery modules 20 are arranged along the second direction Y, and the two battery modules 20 are in series connection with each other, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0158] In FIG. 3, each battery module 20 includes multiple battery monomers 21 arranged in a stack along the first direction X and multiple current collecting components 22 located on one side of the multiple battery monomers 21 in the third direction Z, the current collecting components 22 are used to connect the multiple battery monomers 21 to realize the electrical connection between the multiple battery monomers 21. Exemplarily, the first direction X is the thickness direction of the battery monomer 21, the second direction Y is the length direction of the battery monomer 21, and the third direction Z is the height direction of the battery monomer 21.

[0159] Wherein, referring to FIGS. 3 and 4, and further referring to FIG. 5, which is a partial enlarged view of position A of the battery module 20 and the sampling assembly 30 after they are assembled with each other. The battery monomer 21 is provided with two electrode terminals 211 at one end thereof in the third direction Z, the polarities of the two electrode terminals 211 are opposite, and the two electrode terminals 211 are respectively used to input or output the positive electrode and the negative electrode of the battery monomer 21, the current collecting component 22 is connected with the electrode terminal 211 of the battery monomer 21 to electrically connect the multiple battery monomers 21. It should be noted that the multiple battery monomers 21 in the battery module 20 can be in series connection, parallel connection, or other structures, exemplarily, in FIG. 3, the multiple battery monomers 21 in the battery module 20 are in series connection through the multiple current collecting components 22.

[0160] Optionally, each battery monomer 21 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery monomer 21 can be in a cuboid, a cylinder, a prism, or other shapes, etc. Exemplarily, in FIGS. 2 and 3, the battery monomer 21 is in a cuboid structure.

[0161] According to some embodiments of the present application, referring to FIG. 3, FIG. 4 and FIG. 5, and further referring to FIG. 6, FIG. 7 and FIG. 8, FIG. 6 is a structural schematic diagram of the sampling assembly 30 provided by some embodiments of the present application, FIG. 7 is a partial enlarged view of position B of the sampling assembly 30 shown in FIG. 6, and FIG. 8 is a sectional view of the harness main body 34 of the sampling assembly 30 perpendicular to the first direction X. The present application provides a battery 100, which comprises a battery module 20 and a sampling assembly 30. The battery module 20 comprises a plurality of busbar components 22 and a plurality of battery monomers 21, the busbar components 22 are electrically connected to the battery monomers 21, and the plurality of busbar components 22 and / or the plurality of battery monomers 21 are each provided with a sampling point. The sampling assembly 30 comprises a plurality of harnesses 31, the harness 31 comprises a conductor 311 and an insulating shell 312, the insulating shell 312 is wrapped on the outer side of the conductor 311, the harness 31 comprises a first harness segment 314 and a second harness segment 315 connected to each other in the extension direction of the harness 31, the first harness segment 314 is connected to the sampling point, and the second harness segment 315 is used for electrically connecting to a battery management system (not shown in the figure) at one end away from the first harness segment 314. The first harness segment 314 of the harness 31 is separated from the harness 31 connected to other sampling points, and the insulating shell 312 of the second harness segment 315 of the harness 31 is connected to the insulating shell 312 of the harness 31 connected to other sampling points and forms a weak structure 313 at the connection position.

[0162] Among them, the plurality of busbar components 22 and / or the plurality of battery monomers 21 are each provided with a sampling point, that is, the sampling point of the battery module 20 used for connecting to the sampling assembly 30 can be provided on the busbar component 22, can be provided on the battery monomer 21, or can be provided on both the busbar component 22 and the battery monomer 21, that is, the harness 31 in the sampling assembly 30 can be connected to the busbar component 22, can be connected to the battery monomer 21, or can be connected to both the busbar component 22 and the battery monomer 21, so as to realize the collection and acquisition of the use information of the battery module 20 by the sampling assembly 30.

[0163] The harness 31 comprises the conductor 311 and the insulating shell 312, the insulating shell 312 is wrapped on the outer side of the conductor 311, that is, each harness 31 of the sampling assembly 30 comprises two parts of the conductor 311 and the insulating shell 312, and the insulating shell 312 is an insulator part wrapped on the outer side of the conductor 311, so as to realize the insulation isolation between the conductors 311 of the plurality of harnesses 31 through the insulating shell 312.

[0164] The wire harness 31 comprises a first wire harness segment 314 and a second wire harness segment 315 connected to each other in the extension direction of the wire harness 31, that is, each wire harness 31 is divided into two segments in the extension direction of the wire harness 31, which are the first wire harness segment 314 and the second wire harness segment 315, the first wire harness segment 314 of the wire harness 31 is disconnected from the wire harness 31 connected to other sampling points, that is, the first wire harness segment 314 is the part of the wire harness 31 disconnected from the wire harness 31 connected to other sampling points, and the second wire harness segment 315 is the part of the wire harness 31 connected to the wire harness 31 connected to other sampling points, that is, the part of the wire harness 31 is disconnected from the wire harness 31 connected to other sampling points at the weak structure 313, so that the part of the wire harness 31 disconnected is the first wire harness segment 314, and the part of the wire harness 31 not disconnected and still connected to the insulation shell 312 of the wire harness 31 connected to other sampling points is the second wire harness segment 315.

[0165] The insulation shell 312 of the second wire harness segment 315 of the wire harness 31 is connected to the insulation shell 312 of the wire harness 31 connected to other sampling points and forms a weak structure 313 at the connection, that is, the insulation shells 312 of the second wire harness segments 315 of the plurality of wire harnesses 31 are connected to each other, and the connection position between the insulation shells 312 of the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points forms a weak structure 313, that is, the connection structure between the insulation shells 312 of the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points is a weak connection, so that the weak structure 313 between the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points is configured to be damaged when subjected to external pulling force, so as to further disconnect the two wire harnesses 31 for connecting different sampling points.

[0166] It should be noted that the number of wire harnesses 31 connected to the same sampling point can be one or multiple. When the number of wire harnesses 31 connected to the same sampling point is multiple, the insulation shells 312 of the plurality of wire harnesses 31 connected to the same sampling point can form a weak structure 313 or can not form a weak structure 313.

[0167] Optionally, the weak structure 313 between the insulating shells 312 of the two wire harness sections 315 of the wire harness 31 for connecting different sampling points can be various, for example, the insulating shells 312 of the plurality of wire harnesses 31 can be an integrally formed structure, and the insulating shells 312 between the second wire harness sections 315 of the two wire harnesses 31 for connecting different sampling points are formed with a weak area, and the weak area is the weak structure 313 between the adjacent two wire harnesses 31. Of course, the insulating shells 312 of the plurality of wire harnesses 31 can also be a split structure, and the insulating shells 312 between the second wire harness sections 315 of the two wire harnesses 31 for connecting different sampling points are bonded to each other, so as to form a weak structure 313 at the bonding position of the insulating shells 312 between the adjacent two wire harnesses 31.

[0168] The first wire harness section 314 is connected to the sampling point, that is, the first wire harness section 314 of the wire harness 31 is a part for being connected to the sampling point, that is, the part stripped out of the wire harness 31 is used for being connected to the sampling point, and the part not stripped out of the wire harness 31 is used for being electrically connected to the battery management system of the battery 100. If the sampling point is a voltage sampling point, the first wire harness section 314 is electrically connected to the busbar component 22 or the battery monomer 21 to collect and obtain the voltage information of the busbar component 22 or the battery monomer 21. If the sampling point is a temperature sampling point, the first wire harness section 314 is electrically connected to the temperature detection piece 35 arranged on the busbar component 22 or the battery monomer 21 to collect and obtain the temperature information of the busbar component 22 or the battery monomer 21.

[0169] It should be noted that if the first wire harness section 314 is electrically connected to the busbar component 22 or the battery monomer 21, the conductor 311 of the first wire harness section 314 is electrically connected to the busbar component 22 or the battery monomer 21. Similarly, if the second wire harness section 315 is electrically connected to the battery management system, the conductor 311 of the second wire harness section 315 is electrically connected to the battery management system.

[0170] Optionally, if the first wire harness section 314 is used for being electrically connected to the busbar component 22 or the battery monomer 21, the first wire harness section 314 can be a structure directly electrically connected to the busbar component 22 or the battery monomer 21, or a structure indirectly electrically connected to the busbar component 22 or the battery monomer 21. For example, in FIG. 5, the first wire harness section 314 is indirectly electrically connected to the busbar component 22 through the fuse device 40. Similarly, the second wire harness section 315 can be a structure directly electrically connected to the battery management system, or a structure indirectly electrically connected to the battery management system. For example, in FIG. 6, one end of the second wire harness section 315 of the plurality of wire harnesses 31 is connected with the connector 33, and the connector 33 is used for plug-in cooperation with the battery management system to indirectly electrically connect the second wire harness section 315 of the wire harness 31 to the battery management system.

[0171] For ease of description, referring to FIGS. 5 and 7, the portions of the second wire harness segments 315 of the plurality of wire harnesses 31 of the sampling assembly 30 that are connected to each other form a wire harness body 34 of the sampling assembly 30, that is, the portions of the wire harnesses 31 that are located in the wire harness body 34 are the second wire harness segments 315, and the portions of the wire harnesses 31 that are stripped from other wire harnesses 31 and not located in the wire harness body 34 are the first wire harness segments 314.

[0172] In this embodiment, the insulating sheaths 312 of the second wire harness segments 315 of the wire harnesses 31 of the sampling assembly 30 are connected to the insulating sheaths 312 of the wire harnesses 31 connected to other sampling points and form a weak structure 313 at the connection, and the first wire harness segments 314 of the wire harnesses 31 are separated from the weak structure 313 from the wire harnesses 31 connected to other sampling points, so that the first wire harness segments 314 of the plurality of wire harnesses 31 are connected to different sampling points, thereby being able to obtain information of different sampling points of the battery 100. When the first wire harness segments 314 of the wire harnesses 31 are pulled due to shaking or expansion and contraction of the battery monomers 21 during use, the wire harnesses 31 and other wire harnesses 31 can be further separated from the weak structure 313, so that the first wire harness segments 314 of the wire harnesses 31 have the ability to separate from other wire harnesses 31 when subjected to external force, thereby enabling the weak structure 313 between the second wire harness segments 315 of the wire harnesses 31 and other wire harnesses 31 to buffer and absorb external force received by the wire harnesses 31, so as to alleviate the phenomenon of rigid pulling of the first wire harness segments 314 of the wire harnesses 31, thereby being able to reduce the phenomenon of breakage or connection failure of the wire harnesses 31 of the sampling assembly 30 during use, so as to reduce the risk of failure or damage of the sampling assembly 30 during use, and is conducive to improving the use stability and service life of the battery 100.

[0173] According to some embodiments of the present application, referring to FIGS. 4, 5 and 6, the second wire harness segments 315 of the plurality of wire harnesses 31 all extend along the first direction X and are arranged side by side along the second direction Y, and the sampling assembly 30 is located on one side of the plurality of battery monomers 21 in the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0174] Among them, the sampling assembly 30 is located on one side of the plurality of battery monomers 21 in the third direction Z, that is, the sampling assembly 30 is arranged on one side of the battery module 20 in the third direction Z.

[0175] The second wire harness segments 315 of the plurality of wire harnesses 31 all extend along the first direction X and are arranged side by side along the second direction Y, that is, the wire harness body 34 of the sampling assembly 30 is a structure extending along the first direction X, and the second wire harness segments 315 located in the wire harness body 34 are structures arranged side by side along the second direction Y.

[0176] In the embodiment, the sampling assembly 30 is arranged on one side of the plurality of battery monomers 21 in the third direction Z, by arranging the second wire harness segments 315 of the plurality of wire harnesses 31 to extend along the first direction X and arranging the second wire harness segments 315 of the plurality of wire harnesses 31 to be arranged along the second direction Y, on one hand, the space occupied by the plurality of wire harnesses 31 of the sampling assembly 30 in the third direction Z can be saved, and wiring and assembly of the plurality of wire harnesses 31 of the sampling assembly 30 can be facilitated, on the other hand, the extension direction and arrangement direction of the second wire harness segments 315 of the plurality of wire harnesses 31 are arranged to be perpendicular to each other, which can further reduce the difficulty of further peeling of the wire harness 31 from the weak structure 313 when the wire harness 31 is pulled by external force, so as to further reduce the pulling force on the first wire harness segment 314 of the wire harness 31, thereby further relieving the phenomenon of fracture or connection failure of the wire harness 31 of the sampling assembly 30 in use, and further improving the use stability and service life of the battery 100.

[0177] According to some embodiments of the present application, as shown in FIGS. 5, 6, 7 and 8, along the second direction Y, the insulating shells 312 of the second wire harness segments 315 of the adjacent wire harnesses 31 connected to different sampling points are connected to each other and form the weak structure 313 at the connection. That is, among the plurality of second wire harness segments 315 arranged side by side in the second direction Y, the insulating shells 312 of the second wire harness segments 315 of the wire harnesses 31 connected to different sampling points are connected to each other and form the weak structure 313.

[0178] In the embodiment, by forming the weak structure 313 between the second wire harness segments 315 of the adjacent wire harnesses 31 connected to different sampling points, when the first wire harness segment 314 of the wire harness 31 is pulled, the wire harness 31 and the adjacent wire harness 31 connected to different sampling points can be further peeled from the weak structure 313, so that the first wire harness segment 314 of the wire harness 31 has the ability to separate from the adjacent wire harness 31 connected to different sampling points when pulled by external force, so that part of the second wire harness segment 315 of the wire harness 31 can be further peeled from the adjacent wire harness 31 connected to different sampling points to form part of the first wire harness segment 314, thereby the weak structure 313 between the second wire harness segment 315 of the wire harness 31 and the adjacent wire harness 31 connected to different sampling points can buffer and absorb the external force received by the wire harness 31, and the first wire harness segment 314 of the wire harness 31 can be further extended and compensate for the pulling phenomenon caused by the battery 100 shaking or the battery monomer 21 swelling and shrinking on the first wire harness segment 314 of the wire harness 31, so as to relieve the rigid pulling phenomenon of the first wire harness segment 314 of the wire harness 31, thereby further reducing the phenomenon of fracture or connection failure of the wire harness 31 of the sampling assembly 30 in use.

[0179] According to some embodiments of the present application, referring to FIG. 7, along the second direction Y, the insulated sheaths 312 of the second harness segments 315 of the harnesses 31 adjacent to and used to connect to the same sampling point are connected to each other and form a weak structure 313 at the connection. That is, among the plurality of second harness segments 315 arranged side by side along the second direction Y, the insulated sheaths 312 of the second harness segments 315 of the harnesses 31 used to connect to the same sampling point are connected to each other and form the weak structure 313.

[0180] In the present embodiment, by forming the weak structure 313 between the second harness segments 315 of the harnesses 31 adjacent to and connected to the same sampling point, when the first harness segment 314 of the harness 31 is pulled, the harness 31 and the harness 31 adjacent to and connected to the same sampling point can be further stripped from the weak structure 313, which is beneficial to further alleviate the phenomenon of rigid pulling of the first harness segment 314 of the harness 31, and thus can further reduce the phenomenon of breakage or connection failure of the harness 31 of the sampling assembly 30 during use.

[0181] According to some embodiments of the present application, referring to FIGS. 5 and 8, the second harness segments 315 of the plurality of harnesses 31 form a harness body 34, the harness body 34 has two opposite first surfaces 341 in the third direction Z, at least one first surface 341 is provided with a groove 3412, and the groove 3412 is located between the conductors 311 of at least two second harness segments 315 of the harnesses 31 adjacent along the second direction Y. The groove bottom wall of the groove 3412 forms the weak structure 313.

[0182] Among them, the first surface 341 is the surface of the two sides of the harness body 34 in the third direction Z. At least one first surface 341 is provided with a groove 3412, that is, only one first surface 341 can be provided with a groove 3412, or both first surfaces 341 can be provided with a groove 3412.

[0183] Exemplarily, the groove 3412 is formed between the conductors 311 of every two adjacent second harness segments 315 in the second direction Y, so that the weak structure 313 is formed between every two adjacent second harness segments 315.

[0184] The groove bottom wall of the groove 3412 forms the weak structure 313, that is, the weak structure 313 is formed in the region of the harness body 34 provided with the groove 3412, that is, the insulated sheaths 312 of the plurality of second harness segments 315 form the weak structure 313 at the bottom of the groove 3412.

[0185] In the embodiment, the part of the second harness section 315 of the plurality of harnesses 31 forms the harness body 34, by arranging the groove 3412 on at least one first surface 341 of the harness body 34, and the groove 3412 is located between the conductors 311 of the second harness section 315 of two adjacent harnesses 31 along the second direction Y, so that the structural strength of the area of the harness body 34 where the groove 3412 is arranged is weakened, so that the groove bottom wall of the groove 3412 forms the weak structure 313 between the two adjacent harnesses 31, which is simple in structure, easy to manufacture, and facilitates the separation of the two adjacent harnesses 31 when subjected to external pulling force.

[0186] In some embodiments, referring to FIG. 8, both first surfaces 341 are provided with grooves 3412 and correspond in position along the third direction Z. Along the third direction Z, the groove bottom surfaces of the corresponding two grooves 3412 form the weak structure 313.

[0187] In some embodiments, referring to FIG. 8, both first surfaces 341 are provided with grooves 3412 and correspond in position along the third direction Z. Along the third direction Z, the groove bottom surfaces of the corresponding two grooves 3412 form the weak structure 313.

[0188] In some embodiments, referring to FIG. 8, both first surfaces 341 are provided with grooves 3412 and correspond in position along the third direction Z. Along the third direction Z, the groove bottom surfaces of the corresponding two grooves 3412 form the weak structure 313.

[0189] In the embodiment, by arranging the groove 3412 on both first surfaces 341, and oppositely arranging the two grooves 3412 along the third direction Z, the weak structure 313 is formed between the groove bottom surfaces of the corresponding two grooves 3412 along the third direction Z, which on the one hand can further weaken the strength of the weak structure 313, so as to facilitate the separation of the two adjacent harnesses 31 when subjected to external pulling force, and on the other hand can reduce the depth of processing of a single groove 3412, which is conducive to reducing the processing difficulty of the sampling assembly 30.

[0190] Of course, the structure of the sampling assembly 30 is not limited to this, and in other embodiments, the sampling assembly 30 can also have other structures, for example, the second harness section 315 of the plurality of harnesses 31 extends along the first direction X, the second harness section 315 of at least two harnesses 31 is arranged side by side along the second direction Y, and the second harness section 315 of at least two harnesses 31 is arranged in layers along the third direction Z, the insulating shells 312 of the second harness section 315 of the adjacent harnesses 31 along the second direction Y or along the third direction Z are connected to each other and form the weak structure 313 at the connection, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0191] In the embodiment, by arranging the second wire segment 315 of at least two wire bundles 31 of the plurality of wire bundles 31 of the sampling assembly 30 side by side along the second direction Y and arranging the second wire segment 315 of at least two wire bundles 31 of the plurality of wire bundles 31 of the sampling assembly 30 stacked along the third direction Z, a structure of multiple layers and each layer including a plurality of wire bundles 31 arranged side by side along the second direction Y is formed, which is conducive to increasing the amount of wire bundles 31 of the sampling assembly 30.

[0192] In some embodiments, referring to FIGS. 3 and 4, along the third direction Z, the busbar component 22 and the sampling assembly 30 are arranged on the same side of the plurality of battery monomers 21.

[0193] In some embodiments, referring to FIGS. 3 and 4, along the third direction Z, the busbar component 22 and the sampling assembly 30 are arranged on the same side of the plurality of battery monomers 21.

[0194] In the embodiment, by arranging the busbar component 22 and the sampling assembly 30 on the same side of the plurality of battery monomers 21 along the third direction Z, the battery 100 adopting the structure can reduce the assembly difficulty between the first wire segment 314 of the wire bundle 31 and the sampling point, thereby improving the assembly efficiency of the battery 100, and on the other hand, the busbar component 22 and the sampling assembly 30 can share part of the space along the third direction Z, which is conducive to saving the space occupied by the battery 100 along the third direction Z, and optimizing the layout between the battery monomer 21 and the plurality of wire bundles 31 of the sampling assembly 30.

[0195] According to some embodiments of the present application, referring to FIGS. 5, 6 and 7, the plurality of wire bundles 31 includes at least one voltage sampling wire 32, the first wire segment 314 of the voltage sampling wire 32 is a first segment 321, and the second wire segment 315 of the voltage sampling wire 32 is a second segment 322. The first segment 321 is used to be electrically connected with the sampling point. The first segment 321 has a first position connected with the sampling point and a second position connected with the second segment 322, and at least part of the first segment 321 is bent, so that the first segment 321 forms a first bending segment 3211 between the first position and the second position.

[0196] The plurality of wire harnesses 31 comprises at least one voltage sampling line 32, the first wire harness segment 314 of the voltage sampling line 32 is a first segment 321, and the second wire harness segment 315 of the voltage sampling line 32 is a second segment 322. The first segment 321 is used for electrical connection with the sampling point, that is, the plurality of wire harnesses 31 of the sampling assembly 30 has the voltage sampling line 32 used for electrical connection with the sampling point, so that the voltage sampling line 32 in the plurality of wire harnesses 31 can collect and obtain the voltage information of the battery monomer 21 or the busbar component 22. The part of the voltage sampling line 32 used for electrical connection with the battery management system is the second wire harness segment 315 of the wire harness 31, that is, the second segment 322 of the voltage sampling line 32.

[0197] Exemplarily, in FIG. 5, the first segment 321 of the voltage sampling line 32 is electrically connected with the busbar component 22, that is, the first position is the position where the first segment 321 of the voltage sampling line 32 is connected with the busbar component 22.

[0198] The first position is the position where the first segment 321 of the voltage sampling line 32 is connected with the sampling point. If the first segment 321 of the voltage sampling line 32 is directly connected with the sampling point, the connection position of the first segment 321 of the voltage sampling line 32 and the sampling point is the first position. If the first segment 321 of the voltage sampling line 32 is indirectly connected with the sampling point through the fuse device 40, the connection position of the first segment 321 of the voltage sampling line 32 and the fuse device 40 is the first position.

[0199] The second position is the position where the second segment 322 of the voltage sampling line 32 is close to one end of the first segment 321 of the voltage sampling line 32, that is, the position where the first segment 321 of the voltage sampling line 32 is connected with the wire harness body 34. The second position is also the position of the stripping point where the voltage sampling line 32 and the adjacent wire harness 31 are stripped from each other.

[0200] At least part of the first segment 321 is bent, so that the first segment 321 forms a first bending segment 3211 between the first position and the second position, that is, the first segment 321 of the voltage sampling line 32 forms a bending structure. The part of the first segment 321 of the voltage sampling line 32 that forms the bending structure is the first bending segment 3211 of the first segment 321. The first bending segment 3211 is located between the first position and the second position on the first segment 321, so that the distance between the first position and the second position is less than the length of the first segment 321.

[0201] Exemplarily, in FIG. 7, the partial bending of the first segment 321 forms a first bending segment 3211, so that the first segment 321 further has a straight segment 3212 connected with the first bending segment 3211. Of course, in other embodiments, the first segment 321 can also be entirely bent, so that the entire first segment 321 is the first bending segment 3211.

[0202] In the present embodiment, by arranging the first segment 321 of the voltage sampling line 32 to be bent at least in part from the adjacent wire harness 31, so that the first segment 321 forms a first bending segment 3211 between a first position connected with the sampling point and a second position connected with the second segment 322, the length of the first segment 321 can be greater than the distance between the first position and the second position, so that the first bending segment 3211 can play a certain buffering role when the first segment 321 is subjected to tension, and so that the first bending segment 3211 can absorb and adapt the displacement of the sampling point relative to the sampling assembly 30 in multiple directions, thereby further reducing the tension force to which the first segment 321 of the voltage sampling line 32 is subjected during use, to further alleviate the phenomenon of breakage of the voltage sampling line 32 of the sampling assembly 30 or failure of connection with the busbar component 22 during use.

[0203] In some embodiments, referring to FIG. 7, the first segment 321 can include a straight segment 3212 and a first bending segment 3211, the first bending segment 3211 connecting the straight segment 3212 and the second segment 322, and the straight segment 3212 being electrically connected with the sampling point.

[0204] Correspondingly, the straight segment 3212 is electrically connected with the busbar component 22, and the first segment 321 can include a straight segment 3212 and a first bending segment 3211, that is, the first segment 321 is a structure of partial bending to form the first bending segment 3211.

[0205] The first bending segment 3211 connects the straight segment 3212 and the second segment 322, and the straight segment 3212 is electrically connected with the sampling point, that is, the first bending segment 3211 of the first segment 321 is directly connected with the second segment 322 of the voltage sampling line 32, so that the first segment 321 is a first bending segment 3211 formed by partial bending of the portion connected with the second segment 322. It should be noted that, in other embodiments, the first bending segment 3211 can be connected with the second segment 322 through the straight segment 3212, and correspondingly, the first bending segment 3211 is electrically connected with the sampling point. Of course, the first segment 321 can also include two straight segments 3212, the first bending segment 3211 being connected between the two straight segments 3212, one of the two straight segments 3212 being connected with the second segment 322, and the other straight segment 3212 being electrically connected with the sampling point.

[0206] In the embodiment, the first section 321 of the voltage sampling line 32 is provided with a straight section 3212 and a first curved section 3211, and the first curved section 3211 of the first section 321 is directly connected with the second section 322 of the voltage sampling line 32, so that the connection position of the first curved section 3211 and the second section 322 is located at the position of the stripping point where the voltage sampling line 32 and the adjacent wire harness 31 are stripped from each other, so that the structure that the curved part of the first section 321 is connected with the second section 322 can be realized, which is beneficial to further reduce the difficulty of the voltage sampling line 32 and other wire harnesses 31 being further stripped from the weak structure 313 when the voltage sampling line 32 is pulled by external force, so as to further reduce the pulling force of the first section 321 of the voltage sampling line 32, and further alleviate the phenomenon that the voltage sampling line 32 of the sampling assembly 30 is broken or disconnected with the busbar component 22 during use, so as to improve the use stability and service life of the battery 100.

[0207] According to some embodiments of the present application, as shown in FIGS. 5, 6 and 7, the second section 322 extends along the first direction X, and the sampling point is located on one side of the second section 322 in the second direction Y, and the second direction Y is perpendicular to the first direction X. The end of the second section 322 away from the first section 321 forms a first end 3221, and the first end 3221 is used for electrical connection with the battery management system, and the first curved section 3211 is curved from the straight section 3212 in the direction of the first end 3221 pointing to the second position.

[0208] In the embodiment, the first section 321 of the voltage sampling line 32 is provided with a straight section 3212 and a first curved section 3211, and the first curved section 3211 of the first section 321 is directly connected with the second section 322 of the voltage sampling line 32, so that the connection position of the first curved section 3211 and the second section 322 is located at the position of the stripping point where the voltage sampling line 32 and the adjacent wire harness 31 are stripped from each other, so that the structure that the curved part of the first section 321 is connected with the second section 322 can be realized, which is beneficial to further reduce the difficulty of the voltage sampling line 32 and other wire harnesses 31 being further stripped from the weak structure 313 when the voltage sampling line 32 is pulled by external force, so as to further reduce the pulling force of the first section 321 of the voltage sampling line 32, and further alleviate the phenomenon that the voltage sampling line 32 of the sampling assembly 30 is broken or disconnected with the busbar component 22 during use, so as to improve the use stability and service life of the battery 100.

[0209] For example, in FIG. 5, the wire harness body 34 of the sampling assembly 30 is provided with the busbar component 22 on both sides in the second direction Y, and the wire harness body 34 of the sampling assembly 30 is spaced apart from the busbar component 22 in the second direction Y.

[0210] The end of the second section 322 away from the first section 321 forms a first end 3221, and the first end 3221 is used for electrical connection with the battery management system, that is, the end of the second section 322 of the voltage sampling line 32 for electrical connection with the battery management system is the first end 3221, and in the embodiment that the sampling assembly 30 further includes the connector 33, the first end 3221 of the second section 322 is connected with the connector 33.

[0211] The first curved section 3211 is curved from the straight section 3212 in a direction along the first end 3221 pointing to the second position, i.e. in the first direction X, the part of the first section 321 is curved away from the first end 3221 of the second section 322, so as to form the first curved section 3211 curved in a direction along the first end 3221 pointing to the second position, and so that the first curved section 3211 is located on a side of the straight section 3212 in the first direction X away from the first end 3221.

[0212] In the embodiment, the first curved section 3211 is arranged to be curved from the straight section 3212 in a direction along the first end 3221 pointing to the second position, so that the first curved section 3211 is curved in the first direction X away from the first end 3221 of the second section 322, and so that the first curved section 3211 is formed on a side of the straight section 3212 in the first direction X away from the first end 3221. On the one hand, this can reduce the difficulty of forming the first curved section 3211, and is conducive to reducing the manufacturing difficulty of the battery 100. On the other hand, this can make the voltage sampling wire 32 more easily peel off from the weak structure 313 with other wire harnesses 31 when the voltage sampling wire 32 is pulled by an external force, so as to further reduce the pulling force on the first section 321 of the voltage sampling wire 32, and thus can further alleviate the phenomenon that the voltage sampling wire 32 of the sampling assembly 30 is broken or fails to be connected to the busbar component 22 during use.

[0213] In some embodiments, referring to FIG. 7, the straight section 3212 extends in the second direction Y.

[0214] In the embodiment, the straight section 3212 of the first section 321 is arranged to extend in the second direction Y, so as to facilitate the connection of the straight section 3212 to the busbar component 22 located on a side of the second section 322 in the second direction Y, which is conducive to reducing the assembly difficulty of the straight section 3212 and the busbar component 22, and can optimize the layout between the sampling assembly 30 and the busbar component 22.

[0215] According to some embodiments of the present application, referring to FIG. 5, and further referring to FIG. 9, which is a schematic diagram of a partial structure of a battery module 20 provided by some embodiments of the present application. The first section 321 is configured to be electrically connected to the busbar component 22, the busbar component 22 is connected with a fuse device 40, and an end of the first section 321 away from the second section 322 is connected to the fuse device 40, so as to electrically connect the first section 321 and the busbar component 22.

[0216] In the embodiment, the conductor 311 of the first section 321 of the voltage sampling wire 32 is configured to be electrically connected to the busbar component 22 through the fuse device 40, and the fuse device 40 is configured to be disconnected when the battery module 20 or the sampling assembly 30 is short-circuited, so as to disconnect the electrical connection between the first section 321 of the voltage sampling wire 32 and the busbar component 22.

[0217] It should be noted that the structure in which the fuse device 40 is connected to the busbar component 22 can be various, and the fuse device 40 can be arranged on the side of the busbar component 22 away from the battery cells 21 in the third direction Z, or on the side of the busbar component 22 facing the battery cells 21 in the third direction Z, or on any side of the busbar component 22 in the first direction X or the second direction Y.

[0218] Optionally, the fuse device 40 can be various, such as a plug-in fuse, a screw-in fuse, or a sealed fuse, etc.

[0219] In this embodiment, the fuse device 40 is connected to the busbar component 22 of the battery module 20, and the first section 321 of the voltage sampling line 32 is electrically connected to the busbar component 22 through the fuse device 40, so that when the battery module 20 or the sampling assembly 30 is short-circuited, the fuse device 40 can disconnect the electrical connection between the busbar component 22 and the voltage sampling line 32, thereby achieving the disconnection of the battery module 20 and the sampling assembly 30, so as to alleviate the further damage of the battery module 20 or the sampling assembly 30, and thus effectively improve the use stability and service life of the battery 100.

[0220] According to some embodiments of the present application, referring to FIGS. 5 and 9, and further referring to FIGS. 10, 11 and 12, FIG. 10 is a structural schematic diagram of the fuse device 40 according to some embodiments of the present application, FIG. 11 is an exploded view of the structure of the fuse device 40 according to some embodiments of the present application, and FIG. 12 is a structural schematic diagram of the conductive layer 41 of the fuse device 40 according to some embodiments of the present application. In the third direction Z, the busbar component 22 is arranged on one side of the plurality of battery cells 21, and the fuse device 40 is arranged on the side of the busbar component 22 away from the battery cells 21. The fuse device 40 includes a conductive layer 41, a first insulating layer 42 and a second insulating layer 43, the first insulating layer 42 and the second insulating layer 43 are arranged in layers and connected in the third direction Z, the conductive layer 41 is arranged between the first insulating layer 42 and the second insulating layer 43, the conductive layer 41 includes a first conductive area 411, a fuse 412 and a second conductive area 413, the first conductive area 411 and the second conductive area 413 are arranged in a spaced manner, the first conductive area 411 is connected to the busbar component 22, the second conductive area 413 is connected to the first section 321, the fuse 412 connects the first conductive area 411 and the second conductive area 413, and at least part of the first insulating layer 42 is located between the second conductive area 413 and the busbar component 22 in the third direction Z, so as to insulate and separate the second conductive area 413 and the busbar component 22.

[0221] In the battery module 20, the busbar component 22 serves to electrically connect the electrode terminals 211 of the plurality of battery cells 21, and the material of the busbar component 22 can be various, such as copper, aluminum or alloy, etc.

[0222] The busbar component 22 is arranged on one side of the plurality of battery cells 21 along the third direction Z, and the fuse device 40 is arranged on the side of the busbar component 22 away from the battery cells 21, that is, the busbar component 22 and the fuse device 40 are arranged in a stacked structure along the third direction Z, and the fuse device 40 is arranged on the side of the busbar component 22 away from the battery cells 21 along the third direction Z.

[0223] The first insulating layer 42 and the second insulating layer 43 are arranged in a stacked structure along the third direction Z and are connected to each other, and the first insulating layer 42 and the second insulating layer 43 are arranged in a structure connected to each other along the third direction Z. Optionally, the connection structure between the first insulating layer 42 and the second insulating layer 43 can be thermal composite connection or adhesion, etc. It should be noted that the thickness direction of the first insulating layer 42 and the thickness direction of the second insulating layer 43 are both the third direction Z.

[0224] The conductive layer 41 is arranged between the first insulating layer 42 and the second insulating layer 43, that is, the first insulating layer 42 is located between the conductive layer 41 and the busbar component 22 along the third direction Z, and the second insulating layer 43 is located on the side of the conductive layer 41 away from the busbar component 22, so that the first insulating layer 42 and the second insulating layer 43 are arranged in a structure clamping the conductive layer 41.

[0225] Exemplarily, the material of the first insulating layer 42 can be various, such as rubber, silicone or plastic, etc. Similarly, the material of the second insulating layer 43 can also be various, such as rubber, plastic or silicone, etc.

[0226] The conductive layer 41 includes a first conductive area 411, a fuse 412 and a second conductive area 413, and the first conductive area 411 and the second conductive area 413 are arranged in a spaced structure, that is, the first conductive area 411 and the second conductive area 413 of the conductive layer 41 are arranged in a structure not in contact with each other, and the first conductive area 411 and the second conductive area 413 are electrically connected through the fuse 412.

[0227] The first conductive area 411 is connected to the busbar component 22, and the connection structure between the first conductive area 411 and the busbar component 22 can be various, such as welding connection, clamping or abutting, etc. Similarly, the second conductive area 413 is connected to the first segment 321, and the connection structure between the second conductive area 413 and the first segment 321 can also be various, such as welding connection, clamping or abutting, etc. It should be noted that the second conductive area 413 and the conductor 311 of the first segment 321 are connected to each other to realize the electrical connection between the sampling assembly 30 and the second conductive area 413.

[0228] Optionally, the fuse 412 is connected between the first conductive region 411 and the second conductive region 413, and is configured to be fused when a short circuit occurs in the battery module 20 or the sampling assembly 30, so as to disconnect the electrical connection between the first section 321 of the voltage sampling line 32 and the busbar component 22. The fuse 412 can have various structures. The fuse 412, the first conductive region 411 and the second conductive region 413 can be integrally formed. For example, the conductive layer 41 of the fuse device 40 can be a composite foil structure or a single foil structure formed of different materials. The conductive layer 41 is formed by an integral forming process, such as stamping or cutting, to sequentially connect the first conductive region 411, the fuse 412 and the second conductive region 413. Of course, the fuse 412, the first conductive region 411 and the second conductive region 413 can also be separately arranged. The fuse 412 serves to connect the first conductive region 411 and the second conductive region 413. In this embodiment, the fuse 412 can be made of a low-melting metal or alloy, such as lead, tin, aluminum-magnesium alloy, gold wire or lead-antimony alloy. Similarly, the connection structure between the fuse 412, the first conductive region 411 and the second conductive region 413 can also be various, such as welding connection or clamping.

[0229] At least part of the first insulating layer 42 is located between the second conductive region 413 and the busbar component 22, so as to insulate and separate the second conductive region 413 and the busbar component 22. That is, the first insulating layer 42 and the conductive layer 41 are arranged in a stacked structure along the third direction Z, and the first insulating layer 42 is located between the busbar component 22 and the conductive layer 41 along the third direction Z. At least part of the first insulating layer 42 is located between the second conductive region 413 of the conductive layer 41 and the busbar component 22, so that the first insulating layer 42 can separate the second conductive region 413 and the busbar component 22.

[0230] In the embodiment, the fuse device 40 is provided with the conductive layer 41, the first insulating layer 42 and the second insulating layer 43, the conductive layer 41 comprises the first conductive area 411, the fuse 412 and the second conductive area 413 connected in sequence, the first conductive area 411 and the second conductive area 413 are connected with the busbar component 22 and the first section 321 of the voltage sampling line 32 respectively, so that the voltage sampling line 32 of the sampling assembly 30 can be electrically connected with the busbar component 22 through the conductive layer 41, and when the battery module 20 is short-circuited or the sampling assembly 30 is short-circuited, the fuse 412 of the conductive layer 41 can be fused to disconnect the electrical connection between the first conductive area 411 and the second conductive area 413, so that the battery module 20 and the sampling assembly 30 can be disconnected, wherein the first insulating layer 42 and the second insulating layer 43 are connected in a stacked structure along the third direction Z, so that the first insulating layer 42 and the second insulating layer 43 can clamp and assemble the conductive layer 41, and at least part of the first insulating layer 42 is located between the second conductive area 413 and the busbar component 22. The battery 100 with the above structure can form insulating structures on both sides of the conductive layer 41 in the third direction Z, which is beneficial to further increase the creepage distance between the conductive layer 41 and other components, and is beneficial to further reduce the lap phenomenon between the conductive layer 41 and other components, thereby further reducing the risk of internal short circuit of the battery 100 during use, and improving the use reliability of the battery 100. On the other hand, the first insulating layer 42 and the second insulating layer 43 can stabilize the conductive layer 41, which is beneficial to further improve the assembly stability of the fuse device 40 on the busbar component 22, thereby effectively improving the use stability and service life of the battery 100.

[0231] According to some embodiments of the present application, as shown in FIG. 5 and FIG. 9, the projection of the fuse device 40 in the third direction Z is located in the busbar component 22. That is, the busbar component 22 covers the fuse device 40 in the third direction Z.

[0232] In the embodiment, by setting the projection of the fuse device 40 in the third direction Z to be located in the busbar component 22, on the one hand, the assembly stability of the fuse device 40 on the busbar component 22 can be improved to reduce the risk of the fuse device 40 falling off, and the bumping phenomenon between the fuse device 40 and other components can be alleviated. On the other hand, the lap phenomenon between the conductive layer 41 of the fuse device 40 and other components can be reduced to reduce the risk of internal short circuit of the battery 100 during use, which is beneficial to improve the use reliability of the battery 100.

[0233] According to some embodiments of the present application, referring to FIG. 10, FIG. 11 and FIG. 12, a gap 414 is formed between the first conductive region 411 and the second conductive region 413. In the third direction Z, the first insulating layer 42 and the second insulating layer 43 are connected to each other in the region corresponding to the gap 414, so as to separate the first conductive region 411 and the second conductive region 413.

[0234] The gap 414 formed between the first conductive region 411 and the second conductive region 413 is a spacing region between the first conductive region 411 and the second conductive region 413.

[0235] In the third direction Z, the first insulating layer 42 and the second insulating layer 43 are connected to each other in the region corresponding to the gap 414, so as to separate the first conductive region 411 and the second conductive region 413, that is, the projection of the first insulating layer 42 in the third direction Z is connected to the part of the projection of the second insulating layer 43 in the third direction Z which is located in the gap 414, so as to form a first connecting part located in the space of the gap 414, and the first connecting part can separate the first conductive region 411 and the second conductive region 413.

[0236] In the present embodiment, by connecting the first insulating layer 42 and the second insulating layer 43 to each other in the third direction Z in the region corresponding to the gap 414 between the first conductive region 411 and the second conductive region 413, the first insulating layer 42 and the second insulating layer 43 can also insulate and separate the first conductive layer 41 and the second conductive layer 41, so as to realize the physical spacing between the first conductive region 411 and the second conductive region 413, and increase the creepage distance between the first conductive region 411 and the second conductive region 413, thereby relieving the phenomenon of mis-lap between the first conductive region 411 and the second conductive region 413, and being beneficial to reducing the risk of failure of the safety device 40.

[0237] According to some embodiments of the present application, referring to FIG. 10 and FIG. 11, the edge region of the first insulating layer 42 and the edge region of the second insulating layer 43 are connected to each other, and the first insulating layer 42 and the second insulating layer 43 jointly define a containing space, and the conductive layer 41 is contained in the containing space.

[0238] The edge region of the first insulating layer 42 and the edge region of the second insulating layer 43 are connected to each other, that is, the region close to the outer edge of the first insulating layer 42 and the region close to the outer edge of the second insulating layer 43 are connected to each other, so as to form a second connecting part in a ring structure.

[0239] The first insulating layer 42 and the second insulating layer 43 jointly define a containing space, and the conductive layer 41 is contained in the containing space, that is, the second connecting part formed by the mutual connection of the first insulating layer 42 and the second insulating layer 43 is a structure surrounding the outer side of the conductive layer 41, that is, the projection of the conductive layer 41 in the third direction Z is located within the outer edge of the first insulating layer 42, and the projection of the conductive layer 41 in the third direction Z is located within the outer edge of the second insulating layer 43, so that the edge region of the first insulating layer 42 and the edge region of the second insulating layer 43 are connected to each other to form a containing member for containing the conductive layer 41.

[0240] In the embodiment, by connecting the edge region of the first insulating layer 42 and the edge region of the second insulating layer 43 to each other, the first insulating layer 42 and the second insulating layer 43 can jointly form a containing space for containing the conductive layer 41. The battery 100 with such a structure can further reduce the lap phenomenon between the conductive layer 41 and other components, thereby further reducing the risk of internal short circuit of the battery 100 during use, improving the use reliability of the battery 100, and further improving the stability of the first insulating layer 42 and the second insulating layer 43 to the conductive layer 41, which is beneficial to improving the structural stability of the safety device 40 and further improving the assembly stability of the safety device 40 arranged on the busbar component 22.

[0241] According to some embodiments of the present application, referring to FIGS. 11 and 12, and further referring to FIG. 13, which is a front view of the safety device 40 facing the first insulating layer 42 in the third direction Z according to some embodiments of the present application. The first insulating layer 42 is provided with a first window 421 configured to expose a portion of the first conductive area 411, and the exposed portion of the first conductive area 411 is connected to the busbar component 22.

[0242] The first window 421 is a through-hole structure provided on the first insulating layer 42, and the first window 421 penetrates the surfaces of the two sides of the first insulating layer 42 in the third direction Z.

[0243] The first window 421 is configured to expose a portion of the first conductive area 411, and the exposed portion of the first conductive area 411 is connected to the busbar component 22, that is, a portion of the projection of the first conductive area 411 in the third direction Z is located within the first window 421, and the region of the first conductive area 411 corresponding to the first window 421 in the third direction Z is connected to the busbar component 22.

[0244] In the embodiment, the first window 421 is arranged on the first insulating layer 42, and the first window 421 can expose a part of the first conductive area 411 of the conductive layer 41 in the third direction Z, so as to facilitate the mutual connection between the busbar component 22 and the area of the first conductive area 411 exposed, and to facilitate the reduction of the connection difficulty between the busbar component 22 and the first conductive area 411, and to facilitate the improvement of the connection quality between the busbar component 22 and the first conductive area 411.

[0245] In some embodiments, referring to FIG. 13, the projection of the first window 421 in the third direction Z is located in the first conductive area 411. That is, the projection of the first window 421 in the third direction Z is located in the edge of the first conductive area 411, and vice versa, the first conductive area 411 covers the first window 421 in the third direction Z.

[0246] In the embodiment, by arranging the projection of the first window 421 in the third direction Z to be located in the first conductive area 411, on the one hand, the phenomenon of the area of the first conductive area 411 exposed being too large can be alleviated, so as to reduce the risk of lap between the first conductive area 411 and other components, and on the other hand, the phenomenon of the edge of the first conductive area 411 exposed can be alleviated, so as to facilitate the improvement of the stability of the first conductive area 411 arranged between the first insulating layer 42 and the second insulating layer 43, and thus the risk of the first conductive area 411 falling off from the first window 421 can be reduced.

[0247] According to some embodiments of the present application, referring to FIGS. 11, 12 and 13, and further referring to FIG. 14, which is a front view of the safety device 40 facing the second insulating layer 43 in the third direction Z according to some embodiments of the present application. The first conductive area 411 is welded to the busbar component 22, the second insulating layer 43 is provided with a second window 431, and the second window 431 is configured to expose a part of the first conductive area 411. The projection of the second window 431 and the first window 421 in the third direction Z coincide with each other.

[0248] The second window 431 is a through-hole structure arranged on the second insulating layer 43, and the second window 431 penetrates the surfaces of the two sides of the second insulating layer 43 in the third direction Z.

[0249] The second window 431 is configured to expose a part of the first conductive area 411, that is, a part of the projection of the first conductive area 411 in the third direction Z is located in the second window 431.

[0250] The projection of the second window 431 and the first window 421 in the third direction Z coincides with each other, that is, the shape and size of the first window 421 and the second window 431 are the same, and the positions in the third direction Z are also the same, that is, the part of the projection of the first conductive area 411 in the third direction Z located in the first window 421 is also located in the second window 431. Of course, in other embodiments, the second window 431 and the first window 421 can also be a structure of at least partial overlap in the projection in the third direction Z, that is, part of the projection of the first conductive area 411 in the third direction Z is located in the first window 421 and is also located in the second window 431, so that the part of the projection of the first conductive area 411 in the third direction Z located in the first window 421 and the second window 431 is welded to the busbar component 22.

[0251] In the embodiment, by setting the second window 431 capable of exposing part of the first conductive area 411 on the second insulating layer 43, and the second window 431 and the first window 421 are in a structure of overlapping projections in the third direction Z, so that the first conductive area 411 and the busbar component 22 can be welded from the side of the first conductive area 411 away from the busbar component 22 and corresponding to the position of the second window 431, and there is no need to position the overlapping area of the second window 431 and the first window 421 in the third direction Z when welding the first conductive area 411 and the busbar component 22. On the one hand, it can reduce the difficulty of welding the first conductive area 411 and the busbar component 22 to each other, so as to improve the assembly efficiency of the battery 100, and on the other hand, it can realize that the second insulating layer 43 does not need to be penetrated when welding the first conductive area 411 and the busbar component 22, which is beneficial to reduce the welding power required for welding the first conductive area 411 and the busbar component 22, and can effectively improve the welding quality between the first conductive area 411 and the busbar component 22.

[0252] According to some embodiments of the present application, referring to FIGS. 10, 11 and 14, the second insulating layer 43 is provided with a third window 432, the third window 432 is configured to expose part of the second conductive area 413, and the exposed part of the second conductive area 413 is connected with the first section 321.

[0253] The third window 432 is a through hole structure provided on the second insulating layer 43, and the third window 432 penetrates the surfaces of the two sides of the second insulating layer 43 in the third direction Z.

[0254] The third window 432 is configured to expose a portion of the second conductive region 413, and the exposed portion of the second conductive region 413 is connected with the first segment 321, that is, a portion of the projection of the second conductive region 413 in the third direction Z is located in the third window 432, and the region of the second conductive region 413 in the third direction Z corresponding to the third window 432 is connected with the conductor 311 of the first segment 321.

[0255] In the embodiment, the third window 432 is arranged on the second insulating layer 43, and the third window 432 can expose a portion of the second conductive region 413 of the conductive layer 41 in the third direction Z, so as to facilitate the connection between the first segment 321 of the voltage sampling line 32 and the exposed region of the second conductive region 413, and reduce the difficulty of the connection between the first segment 321 of the voltage sampling line 32 and the second conductive region 413, and improve the connection quality between the first segment 321 of the voltage sampling line 32 and the second conductive region 413.

[0256] In some embodiments, referring to FIG. 14, the projection of the third window 432 in the third direction Z is located in the second conductive region 413. That is, the projection of the third window 432 in the third direction Z is located in the edge of the second conductive region 413, and vice versa, the second conductive region 413 covers the third window 432 in the third direction Z.

[0257] In the embodiment, by arranging the projection of the third window 432 in the third direction Z to be located in the second conductive region 413, on the one hand, the phenomenon that the exposed region of the second conductive region 413 is too large can be alleviated, so as to reduce the risk of lap joint between the second conductive region 413 and other components, and on the other hand, the phenomenon that the edge of the second conductive region 413 is exposed can be alleviated, so as to improve the stability of the second conductive region 413 arranged between the first insulating layer 42 and the second insulating layer 43, thereby reducing the risk of the second conductive region 413 falling off from the third window 432.

[0258] According to some embodiments of the present application, the first insulating layer 42 and the second insulating layer 43 are connected by thermal compounding. That is, the first insulating layer 42 and the second insulating layer 43 are connected with each other by a thermal pressing process.

[0259] Of course, in other embodiments, the first insulating layer 42 and the second insulating layer 43 can also be bonded with each other by double-sided adhesive tape or glue.

[0260] In the embodiment, the first insulating layer 42 and the second insulating layer 43 are connected by thermal composite connection, which can improve the connection reliability of the first insulating layer 42 and the second insulating layer 43, improve the structural stability and reliability of the conductive layer 41 arranged between the first insulating layer 42 and the second insulating layer 43, and reduce the assembly difficulty of the first insulating layer 42 and the second insulating layer 43, thereby improving the assembly efficiency of the fuse device 40.

[0261] According to some embodiments of the present application, referring to FIG. 5, FIG. 9, FIG. 10 and FIG. 11, the first conductive area 411 is welded to the busbar component 22, and the second conductive area 413 is welded to the conductor 311 of the first section 321.

[0262] For example, the first conductive area 411 and the busbar component 22 are connected by laser welding, and the second conductive area 413 and the conductor 311 of the first section 321 are connected by soldering.

[0263] In the embodiment, the first conductive area 411 and the busbar component 22 are arranged to be welded to each other, which can improve the connection reliability between the first conductive area 411 and the busbar component 22, reduce the risk of the fuse device 40 failing due to the disconnection between the first conductive area 411 and the busbar component 22, and improve the overcurrent capacity between the first conductive area 411 and the busbar component 22. Similarly, the second conductive area 413 and the conductor 311 of the first section 321 are arranged to be welded to each other, which can improve the connection reliability between the second conductive area 413 and the first section 321 of the voltage sampling line 32, reduce the risk of the fuse device 40 failing due to the disconnection between the second conductive area 413 and the first section 321 of the voltage sampling line 32, and improve the overcurrent capacity between the second conductive area 413 and the first section 321 of the voltage sampling line 32.

[0264] According to some embodiments of the present application, referring to FIG. 12, and further referring to FIG. 15, which is a sectional view of the conductive layer 41 of the fuse device 40 provided by some embodiments of the present application, perpendicular to the first direction X. The conductive layer 41 includes a first foil 415 and a second foil 416 connected in the third direction Z, the first foil 415 is located on the side of the second foil 416 facing the busbar component 22 in the third direction Z, the first foil 415 is welded to the busbar component 22 at the part of the first conductive area 411, and the second foil 416 is welded to the conductor 311 of the first section 321 at the part of the second conductive area 413. The material of the busbar component 22 is different from that of the conductor 311 of the first section 321, the material of the first foil 415 is the same as that of the busbar component 22, and the material of the second foil 416 is the same as that of the conductor 311 of the first section 321.

[0265] The conductive layer 41 includes the first foil 415 and the second foil 416 which are connected in the third direction Z, that is, the conductive layer 41 is a composite foil structure formed by the first foil 415 and the second foil 416 through a composite process. Optionally, the first foil 415 and the second foil 416 can form the conductive layer 41 through a composite process such as hot rolling or cold rolling.

[0266] It should be noted that in this embodiment, the first conductive area 411, the fuse 412 and the second conductive area 413 are structures formed by the conductive layer 41 of the composite foil through an integrated forming process, for example, the conductive layer 41 of the composite foil is formed by the first conductive area 411, the fuse 412 and the second conductive area 413 connected in sequence through an integrated forming process such as stamping or cutting, so that the first conductive area 411, the fuse 412 and the second conductive area 413 all include the first foil 415 and the second foil 416 connected in the third direction Z.

[0267] The first foil 415 is located on the side of the second foil 416 facing the busbar component 22 in the third direction Z, that is, the first foil 415 and the second foil 416 of the conductive layer 41 are a structure arranged in layers in the third direction Z, and the first foil 415 is located on the side of the second foil 416 facing the busbar component 22.

[0268] The part of the first foil 415 in the first conductive area 411 is welded to the busbar component 22, that is, the first foil 415 in the first conductive area 411 is welded to the busbar component 22. Similarly, the part of the second foil 416 in the second conductive area 413 is welded to the conductor 311 of the first section 321, that is, the second foil 416 in the second conductive area 413 is welded to the conductor 311 of the first section 321.

[0269] It should be noted that the material of the first foil 415 is the same as that of the busbar component 22 means that the main component of the first foil 415 is the same as that of the busbar component 22, for example, if the first foil 415 and the busbar component 22 are both single materials, copper or aluminum, etc., then the first foil 415 and the busbar component 22 are both composed of the same metal elements; if the first foil 415 and the busbar component 22 are alloy materials or mixed materials, such as aluminum alloy or steel, etc., then the material of the first foil 415 and the busbar component 22 is the same means that the main component of the first foil 415 and the busbar component 22 is the same, if the first foil 415 and the busbar component 22 are only different in the content of the components, then they are also the same material. Similarly, the material of the second foil 416 is the same as that of the conductor 311 of the first segment 321 means that the main component of the second foil 416 is the same as that of the conductor 311 of the first segment 321, for example, if the second foil 416 and the conductor 311 of the first segment 321 are both single materials, copper or aluminum, etc., then the second foil 416 and the conductor 311 of the first segment 321 are both composed of the same metal elements; if the second foil 416 and the conductor 311 of the first segment 321 are alloy materials or mixed materials, such as aluminum alloy or steel, etc., then the material of the second foil 416 and the conductor 311 of the first segment 321 is the same means that the main component of the second foil 416 and the conductor 311 of the first segment 321 is the same, if the second foil 416 and the conductor 311 of the first segment 321 are only different in the content of the components, then they are also the same material. Conversely, the material of the busbar component 22 is different from that of the conductor 311 of the first segment 321 means that the main component of the busbar component 22 and the conductor 311 of the first segment 321 is different, for example, if the busbar component 22 and the conductor 311 of the first segment 321 are both single materials, copper or aluminum, etc., then the busbar component 22 and the conductor 311 of the first segment 321 are both composed of different metal elements; if the busbar component 22 and the conductor 311 of the first segment 321 are alloy materials or mixed materials, such as aluminum alloy or steel, etc., then the material of the busbar component 22 and the conductor 311 of the first segment 321 is different means that the main component of the busbar component 22 and the conductor 311 of the first segment 321 is different.

[0270] Exemplarily, the material of the busbar component 22 and the first foil 415 is aluminum, of course, in other embodiments, the material of the busbar component 22 and the first foil 415 can also be copper or alloy, etc.

[0271] Exemplarily, the material of the conductor 311 of the first segment 321 and the second foil 416 is copper, of course, in other embodiments, the material of the conductor 311 of the first segment 321 and the second foil 416 can also be aluminum or alloy, etc.

[0272] In this embodiment, the conductive layer 41 is provided with the first foil 415 and the second foil 416 which are connected in the third direction Z, and the first foil 415 is located on the side of the second foil 416 facing the busbar component 22 in the third direction Z. By setting the material of the first foil 415 to be the same as that of the busbar component 22, and by welding the part of the first foil 415 located in the first conductive area 411 to the busbar component 22, the first conductive area 411 and the busbar component 22 are connected in the same material by welding. Similarly, by setting the material of the second foil 416 to be the same as that of the conductor 311 of the first section 321, and by welding the part of the second foil 416 located in the second conductive area 413 to the conductor 311 of the first section 321, the second conductive area 413 and the conductor 311 of the first section 321 are connected in the same material by welding. On the one hand, this can reduce the welding difficulty between the first conductive area 411 and the busbar component 22, and between the second conductive area 413 and the conductor 311 of the first section 321. On the other hand, this can alleviate the quality problems caused by the mutual welding connection between different materials, and is conducive to improving the welding quality between the first conductive area 411 and the busbar component 22, and between the second conductive area 413 and the conductor 311 of the first section 321.

[0273] Of course, in other embodiments, the safety device 40 can also have other structures, for example, the materials of the conductive layer 41, the busbar component 22 and the conductor 311 of the first section 321 are the same. That is, the first conductive area 411, the fuse 412 and the second conductive area 413 of the conductive layer 41, and the busbar component 22 and the conductor 311 of the first section 321 are structures formed of the same material.

[0274] For example, the conductive layer 41, the busbar component 22 and the conductor 311 of the first section 321 can all be copper or aluminum, etc.

[0275] It should be noted that in this embodiment, the first conductive area 411, the fuse 412 and the second conductive area 413 of the conductive layer 41 can be a structure integrally formed by a single foil, or can be a structure provided separately. The connection structure between the fuse 412 and the first conductive area 411 and the second conductive area 413 can be various, such as welding connection or clamping, etc.

[0276] In the embodiment, the conductive layer 41 of the safety device 40, the conductive member 22 and the conductor 311 of the first section 321 are all configured of the same material, so that the first conductive area 411 and the conductive member 22 and the second conductive area 413 and the conductor 311 of the first section 321 are all connected by welding of the same material. On the one hand, the welding difficulty between the first conductive area 411 and the conductive member 22 and the second conductive area 413 and the conductor 311 of the first section 321 is reduced. On the other hand, the quality problem caused by the welding of different materials is alleviated, and the welding quality between the first conductive area 411 and the conductive member 22 and the second conductive area 413 and the conductor 311 of the first section 321 is improved.

[0277] It should be noted that the structure of the safety device 40 is not limited to the above. In some embodiments, the safety device 40 can also have other structures. For example, the material of the conductive member 22 is different from that of the conductor 311 of the first section 321, the material of the first conductive area 411 is the same as that of the conductive member 22, and the material of the second conductive area 413 is the same as that of the conductor 311 of the first section 321.

[0278] In the embodiment, the first conductive area 411, the fuse 412 and the second conductive area 413 of the conductive layer 41 are configured separately, the fuse 412 connects the first conductive area 411 and the second conductive area 413, the first conductive area 411 is configured of the same material as the conductive member 22, and the second conductive area 413 is configured of the same material as the conductor 311 of the first section 321. In this embodiment, the material of the fuse 412 can be the same as that of the first conductive area 411, the same as that of the second conductive area 413, or different from that of the first conductive area 411 and the second conductive area 413.

[0279] In the embodiment, the material of the first conductive area 411 of the conductive layer 41 is configured to be the same as that of the conductive member 22, and the material of the second conductive area 413 of the conductive layer 41 is configured to be the same as that of the conductor 311 of the first section 321, so that the first conductive area 411 and the conductive member 22 are connected by welding of the same material, and the second conductive area 413 and the conductor 311 of the first section 321 are also connected by welding of the same material. On the one hand, the welding difficulty between the first conductive area 411 and the conductive member 22 and the second conductive area 413 and the conductor 311 of the first section 321 is reduced. On the other hand, the quality problem caused by the welding of different materials is alleviated, and the welding quality between the first conductive area 411 and the conductive member 22 and the second conductive area 413 and the conductor 311 of the first section 321 is improved.

[0280] According to some embodiments of the present application, referring to FIG. 11 and FIG. 12, the first conductive region 411 comprises a first portion 4111, a second portion 4112 and a third portion 4113 connected in sequence, and the first portion 4111 and the third portion 4113 are oppositely arranged along the first direction X.

[0281] The first conductive region 411 comprises a first portion 4111, a second portion 4112 and a third portion 4113 connected in sequence, that is, one end of the second portion 4112 is connected to one end of the first portion 4111, and the other end of the second portion 4112 is connected to one end of the third portion 4113.

[0282] Exemplarily, the second portion 4112 extends along the first direction X, and the two ends of the second portion 4112 in the first direction X are connected to the first portion 4111 and the third portion 4113 respectively, and the first portion 4111 and the third portion 4113 both extend along the second direction Y.

[0283] Exemplarily, in FIG. 12, the first portion 4111, the second portion 4112 and the third portion 4113 of the first conductive region 411 are integrally formed, of course, in other embodiments, the first portion 4111, the second portion 4112 and the third portion 4113 can also be separately arranged.

[0284] It should be noted that in the embodiments in which the first insulating layer 42 is provided with the first window 421 and the second insulating layer 43 is provided with the second window 431, the first window 421 is also a "C" shaped structure with the same shape as the first conductive region 411, and similarly, the second window 431 is also a "C" shaped structure with the same shape as the first conductive region 411, so as to improve the welding area between the first conductive region 411 and the busbar component 22.

[0285] In the present embodiment, by arranging the first conductive region 411 as a first portion 4111, a second portion 4112 and a third portion 4113 connected in sequence, and oppositely arranging the first portion 4111 and the third portion 4113 along the first direction X, the first conductive region 411 is formed as a "C" shaped structure, and the fuse device 40 adopting such structure can increase the effective welding area between the first conductive region 411 of the conductive layer 41 and the busbar component 22, and further improve the assembly stability of the fuse device 40 arranged on the busbar component 22.

[0286] In some embodiments, referring to FIG. 12, along the first direction X, the second conductive region 413 is located between the first portion 4111 and the third portion 4113, and the two ends of the fuse 412 are connected to the second conductive region 413 and the third portion 4113 respectively.

[0287] The second conductive region 413 is located between the first portion 4111 and the third portion 4113 in the first direction X, and is spaced apart from the first portion 4111, the second portion 4112 and the third portion 4113.

[0288] In the embodiment, the second conductive region 413 of the conductive layer 41 is arranged between the first portion 4111 and the third portion 4113 in the first direction X, so that the second conductive region 413 is located inside the first conductive region 411. The fuse device 40 with the structure can optimize the space occupied by the conductive layer 41, improve the overall structural strength of the fuse device 40, and reduce the difficulty of connecting the first conductive region 411 and the second conductive region 413 by the fuse 412, thereby reducing the manufacturing difficulty of the conductive layer 41.

[0289] According to some embodiments of the present application, referring to FIGS. 3, 4 and 5, the plurality of battery monomers 21 are arranged in layers along the first direction X, and the battery module 20 includes a plurality of bus components 22, which are arranged at intervals along the first direction X, and each bus component 22 is electrically connected to two adjacent battery monomers 21. The voltage sampling lines 32 are multiple, the second segments 322 of the multiple voltage sampling lines 32 are arranged to extend along the first direction X, and the first segments 321 of the multiple voltage sampling lines 32 are arranged at intervals along the first direction X, and each first segment 321 is used to be electrically connected to one bus component 22.

[0290] The voltage sampling lines 32 in the multiple wire harnesses 31 of the sampling assembly 30 are multiple, and each voltage sampling line 32 is formed in a structure with a first segment 321 and a second segment 322 connected to each other, so that the second segments 322 of the multiple voltage sampling lines 32 located in the wire harness body 34 are arranged to extend along the first direction X.

[0291] The first segments 321 of the multiple voltage sampling lines 32 are arranged at intervals along the first direction X, that is, the multiple first segments 321 stripped from the multiple voltage sampling lines 32 are arranged at intervals along the first direction X and do not contact each other.

[0292] In the embodiment, the battery module 20 includes a plurality of busbar components 22, the plurality of busbar components 22 are arranged at intervals along the first direction X, the voltage sampling lines 32 of the sampling assembly 30 are multiple, and the first section 321 of each voltage sampling line 32 is electrically connected with one busbar component 22, so that one sampling assembly 30 can sample and obtain the voltage of the plurality of busbar components 22 of the battery module 20, to realize multi-point sampling of the battery module 20, to improve the use reliability of the battery 100, wherein by arranging the first sections 321 of the plurality of voltage sampling lines 32 at intervals along the first direction X, on the one hand, the first sections 321 of the plurality of voltage sampling lines 32 are respectively connected with the plurality of busbar components 22, on the other hand, the interference phenomenon between the first sections 321 of the plurality of voltage sampling lines 32 can be reduced, and the risk of short circuit between the first sections 321 of the plurality of voltage sampling lines 32 can be reduced.

[0293] In some embodiments, referring to FIGS. 3 and 4, the battery module 20 includes two rows of busbar components 22 arranged along the second direction Y, each row of busbar components 22 includes a plurality of busbar components 22 arranged at intervals along the first direction X, and the second direction Y is perpendicular to the first direction X. Along the second direction Y, the second section 322 is located between the two rows of busbar components 22.

[0294] In some embodiments, referring to FIGS. 3 and 4, the battery module 20 includes two rows of busbar components 22 arranged along the second direction Y, each row of busbar components 22 includes a plurality of busbar components 22 arranged at intervals along the first direction X, and the second direction Y is perpendicular to the first direction X. Along the second direction Y, the second section 322 is located between the two rows of busbar components 22.

[0295] The second section 322 is located between the two rows of busbar components 22, that is, the wire harness body 34 of the sampling assembly 30 is arranged between the two rows of busbar components 22 along the second direction Y, and the wire harness body 34 of the sampling assembly 30 is stripped on both sides along the second direction Y to form the first section 321 of the voltage sampling line 32, so that each first section 321 can be electrically connected with one busbar component 22.

[0296] In the embodiment, the battery module 20 is provided with two rows of busbar components 22 arranged along the second direction Y, and the second sections 322 of the plurality of voltage sampling lines 32 of the sampling assembly 30 are arranged between the two rows of busbar components 22 along the second direction Y, to reduce the assembly difficulty between the sampling assembly 30 and the two rows of busbar components 22, and to optimize the layout between the plurality of wire harnesses 31 of the sampling assembly 30 and the two rows of busbar components 22.

[0297] According to some embodiments of the present application, referring to FIGS. 3, 4, 5, 6, 7 and 8, the sampling assembly 30 can further include a temperature detection member 35 arranged at the sampling point, and the temperature detection member 35 is configured to detect the temperature of the busbar component 22 or the battery monomer 21. The plurality of wire harnesses 31 includes at least one temperature sampling wire group 36, and the temperature sampling wire group 36 includes two temperature sampling wires 361 with opposite polarities, wherein a first wire harness segment 314 of the temperature sampling wire 361 is a third segment 3611, and a second wire harness segment 315 of the temperature sampling wire 361 is a fourth segment 3612, the third segment 3611 is electrically connected with the temperature detection member 35, and the fourth segment 3612 is away from one end of the third segment 3611 and is used to be electrically connected with the battery management system.

[0298] In the above structure, the temperature detection member 35 is arranged on the busbar component 22, that is, the sampling point to which the temperature sampling wire 361 is connected is arranged on the busbar component 22, and the temperature detection member 35 is configured to detect the temperature of the busbar component 22 or the battery monomer 21, that is, the temperature detection member 35 is mounted on the busbar component 22 and functions to obtain the temperature of the busbar component 22 or the battery monomer 21. The temperature detection member 35 is a temperature sensor, such as a thermistor, and the specific structure of the temperature sensor can refer to related technologies, which will not be described here.

[0299] Optionally, the structure of the temperature detection member 35 arranged on the busbar component 22 can be various, such as the temperature detection member 35 can be connected to the busbar component 22 by means of bolt screwing, clamping or bonding.

[0300] The plurality of wire harnesses 31 includes at least one temperature sampling wire group 36, and the temperature sampling wire group 36 includes two temperature sampling wires 361 with opposite polarities, that is, the plurality of wire harnesses 31 includes two temperature sampling wires 361 in a group, and each temperature detection member 35 is electrically connected with the two temperature sampling wires 361 in the temperature sampling wire group 36, that is, the two temperature sampling wires 361 in the temperature sampling wire group 36 are respectively connected with the positive and negative electrodes of the temperature detection member 35.

[0301] The first wire harness segment 314 of the temperature sampling line 361 is a third segment 3611, and the second wire harness segment 315 of the temperature sampling line 361 is a fourth segment 3612. That is, the plurality of wire harnesses 31 of the sampling assembly 30 have the temperature sampling line 361 for electrically connecting with the temperature detection piece 35 at the sampling point, so that the temperature sampling line 361 in the plurality of wire harnesses 31 can collect and obtain the temperature information of the battery monomer 21 or the busbar component 22, and the part of the temperature sampling line 361 for electrically connecting with the temperature detection piece 35 is the first wire harness segment 314 of the wire harness 31, that is, the third segment 3611 of the temperature sampling line 361, and the part of the temperature sampling line 361 for electrically connecting with the battery management system is the second wire harness segment 315 of the wire harness 31, that is, the fourth segment 3612 of the temperature sampling line 361.

[0302] The third segment 3611 is electrically connected with the temperature detection piece 35 away from one end of the fourth segment 3612, and the fourth segment 3612 is electrically connected with the battery management system away from one end of the third segment 3611, that is, the two ends of the wire harness 31 for obtaining the temperature information of the battery module 20 are electrically connected with the temperature detection piece 35 and the battery management system respectively, that is, the part of the temperature sampling line 361 stripped out is used for electrically connecting with the temperature detection piece 35, and the part of the temperature sampling line 361 not stripped out is used for electrically connecting with the battery management system of the battery 100.

[0303] It should be noted that the electrical connection between the third segment 3611 and the temperature detection piece 35 is that the conductor 311 of the third segment 3611 is electrically connected with the temperature detection piece 35, and similarly, the electrical connection between the third segment 3611 and the battery management system is that the conductor 311 of the third segment 3611 is electrically connected with the battery management system.

[0304] In the embodiment, the sampling assembly 30 is further provided with the temperature detection piece 35, the temperature detection piece 35 is electrically connected with the two temperature sampling lines 361 in the temperature sampling line group 36, and the temperature detection piece 35 is arranged at the sampling point, so that the sampling assembly 30 can also obtain the temperature of the battery monomer 21 or the busbar component 22 in the battery module 20 during use.

[0305] According to some embodiments of the present application, referring to FIGS. 7 and 8, the insulating shells 312 of the fourth segments 3612 of the two temperature sampling lines 361 in the temperature sampling line group 36 are adjacent and connected. That is, the insulating shells 312 of the parts of the two temperature sampling lines 361 in the temperature sampling line group 36 located in the wire harness body 34 are adjacent and connected structures, and the insulating shells 312 of the parts of the two temperature sampling lines 361 in the temperature sampling line group 36 located in the wire harness body 34 form a weak structure 313.

[0306] In the embodiment, the insulation sheaths 312 of the fourth sections 3612 of the two temperature sampling lines 361 in the same temperature sampling line group 36 are arranged as an adjacent and connected structure. On the one hand, the two temperature sampling lines 361 can be stripped from other wire harnesses 31 at the same time and then stripped from each other, so as to reduce the difficulty of forming the third sections 3611 of the two temperature sampling lines 361. On the other hand, the distance between the third sections 3611 of the two temperature sampling lines 361 in the same temperature sampling line group 36 can be reduced, so as to reduce the connection difficulty between the third sections 3611 of the two temperature sampling lines 361 and the temperature detection member 35.

[0307] In some embodiments, referring to FIG. 7, the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 are arranged at intervals. That is, the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 do not contact each other.

[0308] For example, the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 are arranged at intervals along the first direction X.

[0309] In the embodiment, the third sections 3611 of the two temperature sampling lines 361 in the same temperature sampling line group 36 are arranged at intervals, so as to reduce the direct interference between the third sections 3611 of the two temperature sampling lines 361 and reduce the risk of short circuit between the third sections 3611 of the two temperature sampling lines 361.

[0310] According to some embodiments of the present application, referring to FIG. 7, the temperature detection member 35 has a positive connection line 351 and a negative connection line 352. The positive connection line 351 and the negative connection line 352 are connected with the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 respectively, so as to electrically connect the temperature detection member 35 and the two temperature sampling lines 361 in the temperature sampling line group 36.

[0311] In the embodiment, the temperature detection member 35 has the positive connection line 351 and the negative connection line 352. That is, the positive connection line 351 and the negative connection line 352 are the positive and negative poles of the temperature detection member 35 respectively. The positive connection line 351 and the negative connection line 352 are connected with the third sections 3611 of the two temperature sampling lines 361 in the same temperature sampling line group 36 respectively.

[0312] It should be noted that the connection of the positive connection line 351 and the negative connection line 352 with the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 respectively means that the metal part of the positive connection line 351 and the metal part of the negative connection line 352 are connected with the conductors 311 of the third sections 3611 of the two temperature sampling lines 361 in the temperature sampling line group 36 respectively.

[0313] In the embodiment, the temperature detection piece 35 is provided with the positive electrode connecting wire 351 and the negative electrode connecting wire 352, and the positive electrode connecting wire 351 and the negative electrode connecting wire 352 are connected with the third sections 3611 of the two temperature sampling wires 361 in the temperature sampling wire group 36 respectively, so that the electrical connection between the temperature detection piece 35 and the two temperature sampling wires 361 in the temperature sampling wire group 36 can be realized. The sampling assembly 30 with the structure can reduce the assembly difficulty between the temperature detection piece 35 and the temperature sampling wire 361, and is beneficial to improving the assembly efficiency of the sampling assembly 30.

[0314] In some embodiments, please continue to refer to FIG. 7, at least one of the positive electrode connecting wire 351 and the third section 3611 connected therewith is formed with a second curved section 3511.

[0315] For example, part of the positive electrode connecting wire 351 is bent and formed with the second curved section 3511, and a plurality of second curved sections 3511 are formed on the positive electrode connecting wire 351. Of course, in other embodiments, the third section 3611 of the temperature sampling wire 361 connected with the positive electrode connecting wire 351 can also be bent and formed with the second curved section 3511.

[0316] In the embodiment, by forming the second curved section 3511 on at least one of the positive electrode connecting wire 351 and the third section 3611 connected therewith, the positive electrode connecting wire 351 and the third section 3611 connected therewith are formed with a curved structure, so that the second curved section 3511 can play a certain buffering role when the positive electrode connecting wire 351 and the third section 3611 connected therewith are pulled, and the second curved section 3511 can absorb and adapt the displacement of the sampling point in multiple directions relative to the sampling assembly 30, thereby further reducing the pulling force of the positive electrode connecting wire 351 and the third section 3611 of the temperature sampling wire 361 connected therewith in the use process, to reduce the risk of damage or failure of the sampling assembly 30 in the use process.

[0317] In some embodiments, please continue to refer to FIG. 7, at least one of the negative electrode connecting wire 352 and the third section 3611 connected therewith is formed with a third curved section 3521.

[0318] For example, part of the negative electrode connecting wire 352 is bent and formed with the third curved section 3521, and a plurality of third curved sections 3521 are formed on the negative electrode connecting wire 352. Of course, in other embodiments, the third section 3611 of the temperature sampling wire 361 connected with the negative electrode connecting wire 352 can also be bent and formed with the third curved section 3521.

[0319] In the embodiment, the third bending section 3521 is formed on at least one of the negative electrode connecting line 352 and the third section 3611 connected thereto, so that the at least one of the negative electrode connecting line 352 and the third section 3611 connected thereto is formed with a bending structure. When the negative electrode connecting line 352 and the third section 3611 connected thereto are pulled, the third bending section 3521 can play a certain buffering role, and the third bending section 3521 can absorb and adapt the displacement of the sampling point relative to the sampling assembly 30 in multiple directions, thereby further reducing the pulling force on the negative electrode connecting line 352 and the third section 3611 of the temperature sampling line 361 connected thereto during use, and reducing the risk of damage or failure of the sampling assembly 30 during use.

[0320] According to some embodiments of the present application, as shown in FIG. 7, the connection positions of the positive electrode connecting line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connecting line 352 and the corresponding third section 3611 are arranged at intervals.

[0321] Exemplarily, the connection positions of the positive electrode connecting line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connecting line 352 and the corresponding third section 3611 are arranged at intervals along the first direction X.

[0322] It should be noted that the connection positions of the positive electrode connecting line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connecting line 352 and the corresponding third section 3611 are arranged at intervals, i.e., the connection positions of the metal part of the positive electrode connecting line 351 and the conductor 311 of the corresponding third section 3611 and the connection positions of the metal part of the negative electrode connecting line 352 and the conductor 311 of the corresponding third section 3611 are arranged at intervals.

[0323] In the embodiment, the connection positions of the positive electrode connecting line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connecting line 352 and the corresponding third section 3611 are arranged at intervals, so as to reduce the interference between them, which is conducive to reducing the connection difficulty between the positive electrode connecting line 351 and the corresponding third section 3611 and the negative electrode connecting line 352 and the corresponding third section 3611, and reducing the risk of short circuit between the positive electrode connecting line 351 and the negative electrode connecting line 352 and between the two temperature sampling lines 361.

[0324] In some embodiments, as shown in FIG. 7, the distance between the connection positions of the positive electrode connecting line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connecting line 352 and the corresponding third section 3611 is greater than or equal to 5 mm.

[0325] In FIG. 7, the distance between the connection position of the positive electrode connection wire 351 and the corresponding third section 3611 and the connection position of the negative electrode connection wire 352 and the corresponding third section 3611 is D, i.e., D≥5 mm.

[0326] For example, the distance between the connection position of the positive electrode connection wire 351 and the corresponding third section 3611 and the connection position of the negative electrode connection wire 352 and the corresponding third section 3611 can be 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, or 12 mm, etc.

[0327] In the embodiment, by setting the distance between the connection position of the positive electrode connection wire 351 and the corresponding third section 3611 and the connection position of the negative electrode connection wire 352 and the corresponding third section 3611 to be greater than or equal to 5 mm, the spacing distance between the connection position of the positive electrode connection wire 351 and the corresponding third section 3611 and the connection position of the negative electrode connection wire 352 and the corresponding third section 3611 is further improved, which is beneficial to further reduce the risk of short circuit between the positive electrode connection wire 351 and the negative electrode connection wire 352 and between the two temperature sampling wires 361.

[0328] In some embodiments, as shown in FIG. 7, the positive electrode connection wire 351 is welded to the corresponding third section 3611.

[0329] For example, the positive electrode connection wire 351 and the corresponding third section 3611 can be welded by tin soldering or arc welding.

[0330] It should be noted that the welding of the positive electrode connection wire 351 and the corresponding third section 3611 is the welding of the metal part of the positive electrode connection wire 351 and the conductor 311 of the corresponding third section 3611.

[0331] In the embodiment, by setting the positive electrode connection wire 351 and the third section 3611 of the corresponding temperature sampling wire 361 to be welded to each other, on the one hand, the connection reliability between the positive electrode connection wire 351 and the third section 3611 of the corresponding temperature sampling wire 361 is improved, so as to reduce the risk of connection failure of the positive electrode connection wire 351 and the third section 3611 of the corresponding temperature sampling wire 361, and on the other hand, the overcurrent capacity between the positive electrode connection wire 351 and the corresponding temperature sampling wire 361 is improved.

[0332] In some embodiments, as shown in FIG. 7, the negative electrode connection wire 352 is welded to the corresponding third section 3611.

[0333] For example, the negative electrode connection wire 352 and the corresponding third section 3611 can be welded by tin soldering or arc welding.

[0334] It should be noted that the negative electrode connecting wire 352 is welded to the corresponding third section 3611, and the metal part of the negative electrode connecting wire 352 is welded to the conductor 311 of the corresponding third section 3611.

[0335] In the embodiment, by setting the negative electrode connecting wire 352 and the third section 3611 of the corresponding temperature sampling wire 361 to be welded to each other, on the one hand, the connection reliability between the negative electrode connecting wire 352 and the third section 3611 of the corresponding temperature sampling wire 361 can be improved, so as to reduce the risk of connection failure of the negative electrode connecting wire 352 and the third section 3611 of the corresponding temperature sampling wire 361, and on the other hand, the overcurrent capacity between the negative electrode connecting wire 352 and the corresponding temperature sampling wire 361 can be improved.

[0336] According to some embodiments of the present application, as shown in FIG. 5, the temperature detection piece 35 is clamped on the busbar component 22. Of course, in other embodiments, the temperature detection piece 35 can also be connected to the busbar component 22 by bonding or bolted connection and the like.

[0337] In the embodiment, by setting the temperature detection piece 35 to be clamped on the busbar component 22, the temperature detection piece 35 can detect the temperature of the busbar component 22 or the battery monomer 21. The battery 100 adopting this structure can reduce the assembly difficulty of the temperature detection piece 35 on the one hand, so as to improve the assembly efficiency of the battery 100, and on the other hand, the temperature detection piece 35 can be conveniently disassembled and replaced, which is beneficial to reduce the difficulty of the later maintenance of the battery 100.

[0338] In some embodiments, as shown in FIG. 5, the busbar component 22 is provided with a clamping groove (not shown in the figure), and at least part of the temperature detection piece 35 is clamped in the clamping groove.

[0339] Exemplarily, the clamping groove on the busbar component 22 can be formed by stamping or milling process and the like.

[0340] Of course, in other embodiments, the clamping groove can also be provided on the temperature detection piece 35, and correspondingly, part of the busbar component 22 is clamped in the clamping groove of the temperature detection piece 35, so as to realize the clamping of the temperature detection piece 35 on the busbar component 22.

[0341] In the embodiment, by setting the clamping groove on the busbar component 22, and clamping at least part of the temperature detection piece 35 in the clamping groove, the temperature detection piece 35 is clamped on the busbar component 22, which is simple in structure and convenient to assemble.

[0342] According to some embodiments of the present application, referring to FIGS. 6, 7 and 8, the insulating shells 312 of the plurality of wire harnesses 31 are integrally formed, and the connecting positions of the insulating shells 312 of two adjacent wire harnesses 31 form the weak structures 313. That is, the insulating shells 312 outside the conductors 311 of the second wire harness segments 315 of the plurality of wire harnesses 31 are formed by an integral process, and the weak structures 313 are formed on the insulating shells 312 between the conductors 311 of the second wire harness segments 315 of two wire harnesses 31.

[0343] Exemplarily, the insulating shells 312 of the plurality of wire harnesses 31 can be made by an integral forming process such as injection molding or extrusion molding.

[0344] In the present embodiment, by setting the insulating shells 312 of the plurality of wire harnesses 31 as an integrally formed structure, the connecting positions of the insulating shells 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points form the weak structures 313. The sampling assembly 30 adopting such a structure can reduce the forming difficulty of the weak structures 313 between the insulating shells 312 of the plurality of wire harnesses 31, and can improve the forming efficiency, which is beneficial to improving the production efficiency of the sampling assembly 30.

[0345] Of course, the structure of the sampling assembly 30 is not limited to this. In some embodiments, the sampling assembly 30 can also be other structures, for example, the insulating shells 312 of the plurality of wire harnesses 31 are separately provided, and the insulating shells 312 of the second wire harness segments 315 of the wire harnesses 31 are adhesively connected to the insulating shells 312 of the wire harnesses 31 connected to other sampling points. That is, the adhesive used to adhesively connect the insulating shells 312 of the second wire harness segments 315 of two wire harnesses 31 is the weak structure 313.

[0346] Exemplarily, the insulating shells 312 of the second wire harness segments 315 of two adjacent wire harnesses 31 can be adhesively connected by glue or double-sided tape.

[0347] In the present embodiment, by setting the insulating shells 312 of the plurality of wire harnesses 31 as a separately provided structure, and adhesively connecting the insulating shells 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points, the adhesion positions of the insulating shells 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points form the weak structures 313. The sampling assembly 30 adopting such a structure can expand the number of wire harnesses 31 according to actual conditions, so as to adapt to different batteries 100, which is beneficial to improving the application range of the sampling assembly 30.

[0348] According to some embodiments of the present application, referring to FIG. 3, FIG. 4 and FIG. 6, the sampling assembly 30 can further comprise a connector 33 connected to one end of the second wire harness segment 315 of the plurality of wire harnesses 31 away from the first wire harness segment 314, and the connector 33 is configured to be plugged into the battery management system to electrically connect the wire harnesses 31 and the battery management system. The specific structure of the connector 33 can be referred to the related art, which will not be described here.

[0349] In the embodiments in which the plurality of wire harnesses 31 comprise the voltage sampling line 32 and the temperature sampling line 361, the ends of the voltage sampling line 32 and the temperature sampling line 361 for electrical connection with the battery management system are connected to the connector 33, so that the electrical connection between the voltage sampling line 32 and the temperature sampling line 361 in the plurality of wire harnesses 31 and the battery management system can be achieved by plugging the connector 33 into the battery management system.

[0350] In the embodiments, the sampling assembly 30 is further provided with the connector 33, and the same end of the second wire harness segment 315 of the plurality of wire harnesses 31 is connected to the connector 33, so that the electrical connection between the plurality of wire harnesses 31 and the battery management system can be achieved by plugging the connector 33 into the battery management system, thereby reducing the assembly difficulty between the sampling assembly 30 and the battery management system, improving the assembly efficiency between the sampling assembly 30 and the battery management system, facilitating the replacement and maintenance of the sampling assembly 30, and reducing the later maintenance cost of the battery 100.

[0351] According to some embodiments of the present application, referring to FIG. 2, FIG. 3 and FIG. 4, the battery 100 can further comprise an insulating member 50 arranged between the sampling assembly 30 and the plurality of battery cells 21 to insulate and isolate the sampling assembly 30 and the battery cells 21.

[0352] The insulating member 50 insulates and isolates the battery cells 21 and the sampling assembly 30, and the material of the insulating member 50 can be various, such as rubber, silicone or plastic.

[0353] In the embodiments, the current collecting component 22 is arranged on the side of the insulating member 50 away from the battery cells 21, so that the current collecting component 22 and the sampling assembly 30 are both located on the side of the insulating member 50 away from the battery cells 21 in the third direction Z. Correspondingly, the insulating member 50 is provided with a plurality of avoiding holes, and the avoiding holes penetrate through the two sides of the insulating member 50 in the third direction Z. Each avoiding hole is configured to pass through one electrode terminal 211 of one battery cell 21 to facilitate the connection between the electrode terminal 211 and the current collecting component 22.

[0354] In the embodiment, the insulating member 50 is arranged between the sampling assembly 30 and the plurality of battery monomers 21 of the battery module 20, so that the sampling assembly 30 and the battery monomers 21 are insulated and isolated by the insulating member 50, the risk of lapping between the sampling assembly 30 and the battery monomers 21 is reduced, and the internal short circuit of the battery 100 in use is alleviated, thereby improving the use reliability of the battery 100.

[0355] According to some embodiments of the present application, referring to FIGS. 2 and 3, the battery 100 can include a plurality of battery modules 20, each of which includes a plurality of busbar components 22 and a plurality of battery monomers 21, and the battery 100 can further include a plurality of sampling assemblies 30, each of which is arranged corresponding to one of the battery modules 20.

[0356] For example, the battery 100 includes two battery modules 20 arranged along the second direction Y, and the battery 100 is correspondingly provided with two sampling assemblies 30, both of which are located on the side of the battery module 20 where the busbar component 22 is arranged along the third direction Z, and the two sampling assemblies 30 are arranged along the second direction Y.

[0357] In the embodiment, the battery 100 is provided with a plurality of battery modules 20 and a plurality of sampling assemblies 30, and each sampling assembly 30 is arranged corresponding to one of the battery modules 20, so that the capacity of the battery 100 is improved while the assembly difficulty between the sampling assembly 30 and the battery module 20 is reduced, thereby reducing the sampling difficulty of the battery module 20.

[0358] According to some embodiments of the present application, referring to FIGS. 2 and 3, along the third direction Z, the busbar component 22 is arranged on one side of the plurality of battery monomers 21, and the sampling assembly 30 is located on the side of the battery module 20 where the plurality of battery monomers 21 are arranged with the busbar component 22. The battery 100 further includes a box body 10, which includes a first box body 11 and a second box body 12 arranged along the third direction Z, and the first box body 11 and the second box body 12 are overlapped with each other and jointly define an assembly space for accommodating the battery monomers 21 and the sampling assembly 30.

[0359] Among them, along the third direction Z, the sampling assembly 30 is located on the side of the plurality of battery monomers 21 where the busbar component 22 is arranged, and the box body 10 includes a first box body 11 and a second box body 12 arranged along the third direction Z, that is, the first box body 11 and the second box body 12 of the box body 10 are overlapped in the same direction as the arrangement direction of the sampling assembly 30 and the battery monomers 21.

[0360] In the embodiment, by arranging the busbar component 22 and the sampling assembly 30 on the same side of the plurality of battery monomers 21 in the third direction Z, and arranging the cover closing direction of the first box body 11 and the second box body 12 of the box body 10 to be the same as the arrangement direction of the sampling assembly 30 and the battery module 20, on the one hand, the assembly difficulty between the battery module 20 and the sampling assembly 30 can be reduced, and the assembly difficulty of the battery module 20 and the sampling assembly 30 into the box body 10 can be reduced, so as to improve the assembly efficiency of the battery 100, on the other hand, after the first box body 11 and the second box body 12 are opened, the sampling assembly 30 can be conveniently maintained or replaced, which is beneficial to reduce the later maintenance cost of the battery 100.

[0361] According to some embodiments of the present application, the present application also provides a power consuming device, the power consuming device comprising the battery 100 of any one of the above solutions, and the battery 100 is used to provide electric energy for the power consuming device.

[0362] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict.

[0363] It should be noted that the embodiments and the features in the embodiments in the present application can be combined with each other without conflict.

[0364] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery comprising: a plurality of busbars and a plurality of battery cells, the busbars being electrically connected to the battery cells, each of the plurality of busbars and / or the plurality of battery cells being provided with a sampling point; a sampling assembly comprising a plurality of harnesses for connecting to a plurality of the sampling points, each of the harnesses comprising a conductor and an insulating sheath, the insulating sheath being wrapped around the conductor, each of the harnesses comprising a first harness segment and a second harness segment connected to each other in an extending direction of the harness, the first harness segment being connected to the sampling point, the second harness segment being distal to the first harness segment and being configured to be electrically connected to a battery management system; wherein the first harness segment of each of the harnesses is disconnected from the first harness segment of another of the harnesses, and the insulating sheath of the second harness segment of each of the harnesses is connected to the insulating sheath of the second harness segment of another of the harnesses and forms a weak structure at the connection.

2. The battery of claim 1, wherein, The second harness segment of each of the plurality of harnesses extends in a first direction and is arranged side by side in a second direction, and the sampling assembly is located on one side of the plurality of battery cells in a third direction, the first direction, the second direction and the third direction being perpendicular to each other.

3. The battery of claim 2, wherein, In the second direction, the insulating sheaths of the second harness segments of adjacent harnesses for connecting to different sampling points are connected to each other and form the weak structure at the connection.

4. The battery of claim 2 or 3, wherein, In the second direction, the insulating sheaths of the second harness segments of adjacent harnesses for connecting to the same sampling point are connected to each other and form the weak structure at the connection.

5. The battery of any one of claims 2-4, wherein, The second harness segment of each of the plurality of harnesses forms a harness body, the harness body having two opposite first surfaces in the third direction, at least one of the first surfaces being provided with a groove, and the groove being located between the conductors of at least two second harness segments of adjacent harnesses in the second direction, a groove bottom wall of the groove forming the weak structure.

6. The battery of claim 5, wherein, Both of the first surfaces are provided with the groove and are located corresponding to each other in the third direction, and in the third direction, a groove bottom surface between the corresponding two grooves forms the weak structure.

7. The battery of claim 1, wherein, The second harness segment of each of the plurality of harnesses extends in a first direction; wherein the second harness segment of at least two of the harnesses is arranged side by side in a second direction, and the second harness segment of at least two of the harnesses is arranged in a third direction, the insulating sheaths of the second harness segments of adjacent harnesses in the second direction or in the third direction being connected to each other and forming the weak structure at the connection, the first direction, the second direction and the third direction being perpendicular to each other.

8. The battery of any one of claims 1-7, wherein, In the third direction, the busbars and the sampling assembly are arranged on the same side of the plurality of battery cells.

9. The battery of any one of claims 1-8, wherein, The plurality of wire harnesses comprises at least one voltage sampling wire, the first wire harness segment of the voltage sampling wire is a first segment, the second wire harness segment of the voltage sampling wire is a second segment, the first segment is configured to be electrically connected with the sampling point, the first segment has a first position connected with the sampling point and a second position connected with the second segment, at least part of the first segment is bent to form a first bending segment between the first position and the second position.

10. The battery of claim 9, wherein, The first segment comprises a straight segment and the first bending segment, the first bending segment connects the straight segment and the second segment, and the straight segment is electrically connected with the sampling point.

11. The battery of claim 10, wherein, The second segment extends along a first direction, and the sampling point is located on one side of the second segment in a second direction perpendicular to the first direction. The second segment has a first end away from the first segment, the first end is configured to be electrically connected with the battery management system, and the first bending segment is bent from the straight segment in a direction in which the first end points to the second position.

12. The battery of claim 11, wherein, The straight segment extends along the second direction.

13. The battery of any one of claims 9-12, wherein, The first segment is configured to be electrically connected with the busbar component, the busbar component is connected with a fuse device, and an end of the first segment away from the second segment is connected with the fuse device to electrically connect the first segment and the busbar component.

14. The battery of claim 13, wherein, In a third direction, the busbar component is arranged on one side of the plurality of battery monomers, and the fuse device is arranged on a side of the busbar component away from the battery monomers. The fuse device comprises a conductive layer, a first insulating layer and a second insulating layer, the first insulating layer and the second insulating layer are arranged in a stack and are connected in the third direction, the conductive layer is arranged between the first insulating layer and the second insulating layer, the conductive layer comprises a first conductive area, a fuse and a second conductive area, the first conductive area and the second conductive area are arranged in a spaced manner, the first conductive area is connected with the busbar component, the second conductive area is connected with the first segment, the fuse connects the first conductive area and the second conductive area, and at least part of the first insulating layer is located between the second conductive area and the busbar component in the third direction to insulate and separate the second conductive area and the busbar component.

15. The battery of claim 14, wherein, In the third direction, a projection of the fuse device is located in the busbar component.

16. The battery of claim 14 or 15, wherein, A gap is formed between the first conductive area and the second conductive area. In the third direction, the first insulating layer and the second insulating layer are connected to each other in a region corresponding to the gap to separate the first conductive area and the second conductive area.

17. The battery of any one of claims 14-16, wherein, An edge region of the first insulating layer and an edge region of the second insulating layer are connected to each other, the first insulating layer and the second insulating layer jointly define an accommodation space, and the conductive layer is accommodated in the accommodation space.

18. The battery of claim 17, wherein, The first insulating layer is provided with a first window configured to expose part of the first conductive area, and the exposed part of the first conductive area is connected with the busbar component.

19. The battery of claim 18, wherein, In the third direction, a projection of the first window is located in the first conductive area.

20. The battery of claim 18 or 19, wherein, The first conductive region is welded to the busbar component, and the second insulating layer is provided with a second window configured to expose a portion of the first conductive region. The projection of the second window and the first window in the third direction overlaps each other.

21. The battery of any one of claims 14-20, wherein, The second insulating layer is provided with a third window configured to expose a portion of the second conductive region, and the exposed portion of the second conductive region is connected to the first segment.

22. The battery of claim 21, wherein, In the third direction, the projection of the third window is located in the second conductive region.

23. The battery of any one of claims 14-22, wherein, The first insulating layer and the second insulating layer are thermally and complexly connected.

24. The battery of any one of claims 14-23, wherein, The first conductive region is welded to the busbar component, and the second conductive region is welded to the conductor of the first segment.

25. The battery of claim 24, wherein, The conductive layer includes a first foil and a second foil complexly connected in the third direction, the first foil is located on the side of the second foil facing the busbar component in the third direction, the first foil is welded to the portion of the first conductive region and the busbar component, and the second foil is welded to the portion of the second conductive region and the conductor of the first segment. The material of the busbar component is different from that of the conductor of the first segment, the material of the first foil is the same as that of the busbar component, and the material of the second foil is the same as that of the conductor of the first segment.

26. The battery of claim 24, wherein, The materials of the conductive layer, the busbar component, and the conductor of the first segment are the same.

27. The battery of claim 24, wherein, The material of the busbar component is different from that of the conductor of the first segment, the material of the first conductive region is the same as that of the busbar component, and the material of the second conductive region is the same as that of the conductor of the first segment.

28. The battery of any one of claims 1-27, wherein, The sampling assembly further includes a temperature detection member disposed on the sampling point, and the temperature detection member is configured to detect the temperature of the busbar component or the battery monomer. The plurality of wire harnesses includes at least one temperature sampling wire group, the temperature sampling wire group includes two temperature sampling wires with opposite polarities, the first wire harness segment of the temperature sampling wire is a third segment, the second wire harness segment of the temperature sampling wire is a fourth segment, the third segment is electrically connected to the temperature detection member, and the fourth segment is used to be electrically connected to a battery management system at the end away from the third segment.

29. The battery of claim 28, wherein, The insulating shells of the fourth segments of the two temperature sampling wires in the temperature sampling wire group are adjacent and connected.

30. The battery of claim 29, wherein, The third segments of the two temperature sampling wires in the temperature sampling wire group are arranged at intervals.

31. The battery of any one of claims 28-30, wherein, The temperature detection member has a positive connection wire and a negative connection wire, the positive connection wire and the negative connection wire are respectively connected to the third segments of the two temperature sampling wires in the temperature sampling wire group to electrically connect the temperature detection member and the two temperature sampling wires in the temperature sampling wire group.

32. The battery of claim 31, wherein, At least one of the positive connection wire and the third segment connected thereto forms a second curved segment; and / or At least one of the negative connection wire and the third segment connected thereto forms a third curved segment.

33. The battery of claim 31 or 32, wherein, The connection position of the positive electrode connecting wire and the corresponding third section is spaced apart from the connection position of the negative electrode connecting wire and the corresponding third section.

34. The battery of claim 33, wherein, The distance between the connection position of the positive electrode connecting wire and the corresponding third section and the connection position of the negative electrode connecting wire and the corresponding third section is greater than or equal to 5 mm.

35. The battery of any one of claims 31-34, wherein, The positive electrode connecting wire is welded to the corresponding third section; and / or The negative electrode connecting wire is welded to the corresponding third section.

36. The battery of any one of claims 28-35, wherein, The temperature detection member is clamped on the busbar component.

37. The battery of claim 36, wherein, The busbar component is provided with a clamping groove, and at least part of the temperature detection member is clamped in the clamping groove.

38. The battery of any one of claims 1-37, wherein, The insulating shells of the plurality of wire harnesses are integrally formed.

39. The battery of any one of claims 1-37, wherein, The insulating shells of the plurality of wire harnesses are separately provided, and the insulating shell of the second wire harness section of the wire harness is adhesively connected to the insulating shell of the wire harness connected to other sampling points.

40. The battery of any one of claims 1-39, wherein, The sampling assembly further comprises a connector connected to one end of the second wire harness section of the plurality of wire harnesses away from the first wire harness section, and the connector is used to plug with the battery management system to electrically connect the wire harness and the battery management system.

41. The battery of any one of claims 1-40, wherein, The battery further comprises: An insulating member is provided between the sampling assembly and the plurality of battery monomers to insulate and isolate the sampling assembly and the battery monomers.

42. The battery of any one of claims 1-41, wherein, The battery comprises a plurality of battery modules, and the battery module comprises the plurality of busbar components and the plurality of battery monomers. The battery further comprises a plurality of sampling assemblies, and each battery module is provided with one sampling assembly.

43. The battery of any one of claims 1-42, wherein, In the third direction, the busbar component is arranged on one side of the plurality of battery monomers, and the sampling assembly is located on the side of the plurality of battery monomers provided with the busbar component. The battery further comprises a box body, and the box body comprises a first box body and a second box body arranged in the third direction, the first box body and the second box body are overlapped with each other and jointly define an assembly space, and the assembly space is used to accommodate the battery monomers and the sampling assembly.

44. An electrical device comprising the battery of any one of claims 1-43, the battery being used to provide electrical energy.

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