Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a plurality of confluence components, a plurality of battery monomers and a sampling assembly. The confluence components are electrically connected to the battery monomers, and sampling points are arranged on the plurality of confluence components and / or the plurality of battery monomers. The sampling assembly comprises a plurality of wire harnesses, the plurality of wire harnesses are used for connecting the plurality of sampling points, each wire harness comprises a conductor and an insulating shell, the insulating shell covers the outer side of the conductor, each wire harness comprises a first wire harness section and a second wire harness section, the first wire harness section is separated from the wire harnesses connected to the other sampling points, and the second wire harness section is separated from the wire harnesses connected to the other sampling points. And the insulating shell of the second wire harness section is connected with the insulating shells of the wire harnesses connected to other sampling points, and a weak structure is formed at the joint. Therefore, when the wire harness is pulled, the wire harness can be further stripped from other wire harnesses from a weak structure, so that the phenomenon of rigid pulling of the wire harness is relieved, and the risk of failure or damage of the sampling assembly is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular, to a battery and an electrical device using the same. Background Art

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

[0003] In battery technology, in order to ensure the safety of battery cells, a sampling component is generally provided in the battery. Through the sampling component, the voltage and temperature of the battery cell during use can be collected, so as to obtain the usage situation of the battery. However, the sampling components in existing batteries often fail or are damaged during use, resulting in poor use stability of the battery and a short service life. Summary of the Utility Model

[0004] The embodiments of the present application provide a battery and an electrical device using the same, which can effectively improve the use stability and service life of the battery.

[0005] In a first aspect, the embodiments of the present application provide a battery, including a plurality of busbar components, a plurality of battery cells, and a sampling component; the busbar components are electrically connected to the battery cells, and sampling points are provided on the plurality of busbar components and / or the plurality of battery cells; the sampling component includes a plurality of wire harnesses, the plurality of wire harnesses are used to connect to the plurality of sampling points, the wire harness includes a conductor and an insulating outer shell, the insulating outer shell covers the outside of the conductor, the wire harness includes a first wire harness section and a second wire harness section that are connected to each other in its extending direction, the first wire harness section is connected to the sampling point, and one end of the second wire harness section away from the first wire harness section is used to be electrically connected to a battery management system; wherein, the first wire harness section of the wire harness is separated from the wire harnesses connected to other sampling points, and the insulating outer shells of the second wire harness sections of the wire harnesses are connected to each other and form a weak structure at the connection.

[0006] In the above technical solution, the insulating outer shell of the second wire harness segment of the wire harness of the sampling component is connected to the insulating outer shell of the wire harness connected to other sampling points, and a weak structure is formed at the connection, and the first wire harness segment of the wire harness and the wire harness connected to other sampling points are separated from each other at the weak structure, so that the first wire harness segments of multiple wire harnesses are connected to different sampling points, so as to obtain information on different sampling points of the battery. When the battery of this structure is shaken or the battery cells expand and contract during use, causing pulling on the first wire harness segment of the wire harness, the wire harness can be further peeled off from other wire harnesses at 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 pulling force, so that 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 phenomenon of rigid pulling of the first wire harness segment of the wire harness, and further reduce the phenomenon of breakage or connection failure of the wire harness of the sampling component during use, so as to reduce the risk of failure or damage of the sampling component during use, which is beneficial to improving the use stability and service life of the battery.

[0007] In some embodiments, the second wire harness segments of the multiple wire harnesses all extend in a first direction and are arranged side by side in a second direction, and the sampling component is located on one side of the multiple battery cells in a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0008] In the above technical solution, the sampling component is arranged on one side of the multiple battery cells in the third direction. By arranging the second wire harness segments of the multiple wire harnesses to all extend in the first direction and arranging the second wire harness segments of the multiple wire harnesses in a structure arranged in the second direction, on the one hand, the space occupied by the multiple wire harnesses of the sampling component in the third direction can be saved, and it is convenient to route and assemble the multiple wire harnesses of the sampling component. On the other hand, setting the extension direction and arrangement direction of the second wire harness segments of the multiple wire harnesses to be perpendicular to each other can further reduce the difficulty of further peeling off the wire harness from other wire harnesses at the weak structure when the wire harness is subjected to external pulling force, so as to further reduce the pulling force received by the first wire harness segment of the wire harness, and thus can further relieve the phenomenon of breakage or connection failure of the wire harness of the sampling component during use, so as to further improve the use stability and service life of the battery.

[0009] In some embodiments, along the second direction, the insulating outer shells of the second wire harness segments of the adjacent wire harnesses for connecting to different sampling points are connected to each other and form the weak structure at the connection.

[0010] In the above technical solution, by forming a weak structure between the second wire harness segments of wire harnesses that are adjacent and connected to different sampling points, when the first wire harness segment of the wire harness is pulled, the wire harness can be further peeled off from the weak structure with the wire harnesses that are adjacent and connected to different sampling points, enabling the first wire harness segment of the wire harness to have the ability to separate from the wire harnesses that are adjacent and connected to different sampling points when subjected to an external pulling force, so that a part of the second wire harness segment of the wire harness can be further peeled off from the wire harnesses that are adjacent and connected to different sampling points to form a part of the first wire harness segment. Thus, the weak structure between the second wire harness segment of the wire harness and the wire harnesses that are adjacent and connected to different sampling points can buffer and absorb the external force applied to the wire harness, and enable the first wire harness segment of the wire harness to be further extended and compensate for the pulling phenomenon caused by battery shaking or the expansion and contraction of battery cells on the first wire harness segment of the wire harness, so as to relieve the phenomenon of rigid pulling of the first wire harness segment of the wire harness, and further reduce the phenomenon of breakage or connection failure of the wire harness of the sampling component during use.

[0011] In some embodiments, along the second direction, the insulating sheaths of the second wire harness segments of the wire harnesses that are adjacent and used to be connected to the same sampling point are connected to each other and form the weak structure at the connection.

[0012] In the above technical solution, by forming a weak structure between the second wire harness segments of the wire harnesses that are adjacent and connected to the same sampling point, when the first wire harness segment of the wire harness is pulled, the wire harness can also be further peeled off from the weak structure with the wire harnesses that are adjacent and connected to the same sampling point, which is beneficial to further relieve the phenomenon of rigid pulling of the first wire harness segment of the wire harness, and further reduce the phenomenon of breakage or connection failure of the wire harness of the sampling component during use.

[0013] In some embodiments, the second wire harness segments of the plurality of wire harnesses form a wire harness body. The wire 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 wire harness segments of at least two wire harnesses that are adjacent along the second direction. The bottom wall of the groove forms the weak structure.

[0014] In the above technical solution, a part of the second wire harness segments of the plurality of wire harnesses forms a wire harness body. By providing a groove on at least one first surface of the wire harness body, and the groove is located between the conductors of the second wire harness segments of two adjacent wire harnesses along the second direction, the structural strength of the area of the wire harness body provided with the groove is weakened, so that the bottom wall of the groove forms the weak structure between two adjacent wire harnesses. The structure is simple, easy to manufacture, and convenient for two adjacent wire harnesses to separate when subjected to an external pulling force.

[0015] In some embodiments, the two first surfaces are both provided with the grooves and the positions are corresponding along the third direction. Along the third direction, a weak structure is formed between the bottom surfaces of the corresponding two grooves.

[0016] In the above technical solution, by providing grooves on both of the two first surfaces, and the two grooves are oppositely arranged along the third direction, a weak structure is formed between the bottom surfaces of the two grooves corresponding to each other in the third direction. Thus, on the one hand, the strength of the weak structure can be further weakened to facilitate the separation of two adjacent wire harnesses when being pulled by an external force. On the other hand, the depth of machining a single groove can be reduced, which is beneficial to reducing the machining difficulty of the sampling assembly.

[0017] In some embodiments, the second wire harness segments of the plurality of wire harnesses all extend along the first direction; wherein, the second wire harness segments of at least two wire harnesses are arranged side by side along the second direction, and the second wire harness segments of at least two wire harnesses are arranged in a stacked manner along the third direction. The insulating sheaths of the second wire harness segments of the wire harnesses adjacent to each other along the second direction or along the third direction are connected to each other and a weak structure is formed at the connection. The first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0018] In the above technical solution, by arranging the second wire harness segments of at least two wire harnesses among the plurality of wire harnesses of the sampling assembly side by side along the second direction, and arranging the second wire harness segments of at least two wire harnesses among the plurality of wire harnesses of the sampling assembly in a stacked manner along the third direction, it is convenient to form a structure with multiple layers and each layer includes a plurality of wire harnesses arranged side by side along the second direction, which is beneficial to increasing the quantity of the wire harnesses of the sampling assembly.

[0019] 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 cells.

[0020] In the above technical solution, by arranging the busbar component and the sampling assembly on the same side of the plurality of battery cells in the third direction, on the one hand, a battery adopting this structure can reduce the assembly difficulty between the first wire harness segment of the wire harness and the sampling point, so as to improve the assembly efficiency of the battery. On the other hand, it can realize sharing part of the space between the busbar component and the sampling assembly in the third direction, which is beneficial to saving the space occupied by the battery in the third direction, and can optimize the layout between the battery cells and the plurality of wire harnesses of the sampling assembly.

[0021] In some embodiments, the plurality of wire harnesses includes at least one voltage sampling wire. The first wire harness segment of the voltage sampling wire is the first segment, and the second wire harness segment of the voltage sampling wire is the second segment. The first segment is configured to be electrically connected to the sampling point. The first segment has a first position connected to the sampling point and a second position connected to the second segment. At least a part of the first segment is bent so that a first bent segment is formed between the first position and the second position of the first segment.

[0022] In the above technical solution, by setting at least a part of the first segment of the voltage sampling wire peeled off from the adjacent wire harness to be a bent structure, a first bent segment is formed between the first position connected to the sampling point and the second position connected to the second segment of the first segment. Thus, it can be achieved that the length of the first segment is greater than the distance between the first position and the first position, so that the first bent segment can play a certain buffering role when the first segment is pulled, and the first bent segment can absorb and adapt to the displacements generated by the sampling point relative to the sampling component in multiple directions. Furthermore, the pulling force on the first segment of the voltage sampling wire during use can be further reduced, so as to further alleviate the phenomenon that the voltage sampling wire of the sampling component breaks or fails to be connected to the busbar component during use.

[0023] In some embodiments, the first segment includes a straight segment and the first bent segment. The first bent segment connects the straight segment and the second segment, and the straight segment is electrically connected to the sampling point.

[0024] In the above technical solution, the first segment of the voltage sampling wire is provided with a straight segment and a first bent segment, and the first bent segment of the first segment is a structure directly connected to the second segment of the voltage sampling wire, so that the connection position of the first bent segment and the second segment is located at the position of the peeling point where the voltage sampling wire is peeled off from the adjacent wire harness. Thus, a structure in which the bent part of the first segment is connected to the second segment can be achieved, which is beneficial to further reducing the difficulty of further peeling the voltage sampling wire from the weak structure with other wire harnesses when the voltage sampling wire is pulled by an external force, so as to further reduce the pulling force on the first segment of the voltage sampling wire. Furthermore, the phenomenon that the voltage sampling wire of the sampling component breaks or fails to be connected to the busbar component during use can be further alleviated, so as to improve the use stability and service life of the battery.

[0025] In some embodiments, the second segment extends in 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. Wherein, one end of the second segment away from the first segment forms a first end, and the first end is configured to be electrically connected to the battery management system. The first bent segment bends from the straight segment in the direction from the first end to the second position.

[0026] In the above technical solution, by setting the first bending section to be bent from the straight section in the direction pointing from the first end to the second position, so that the first bending section is bent in the first direction away from the first end of the second section, and the first bending section is formed on the side of the straight section away from the first end in the first direction. On the one hand, it can reduce the difficulty of forming the first bending section, which is beneficial to reducing the manufacturing difficulty of the battery. On the other hand, it can make the voltage sampling line easier to be further peeled off from other wire harnesses at the weak structure when being pulled by an external force, so as to further reduce the pulling force on the first section of the voltage sampling line, and then can further alleviate the phenomenon that the voltage sampling line of the sampling component breaks or fails to connect with the busbar component during use.

[0027] In some embodiments, the straight section extends along the second direction.

[0028] In the above technical solution, by setting the straight section of the first section to extend along the second direction, it is convenient for the straight section to be connected to the sampling point located on one side of the second section in the second direction, which is beneficial to reducing the assembly difficulty between the straight section and the busbar component, and can optimize the layout between the sampling component and the busbar component.

[0029] In some embodiments, the first section is used to be electrically connected to the busbar component, and a fuse device is connected to the busbar component. One 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 component.

[0030] In the above technical solution, a fuse device is connected to the busbar component of the battery, and the first section of the voltage sampling line is electrically connected to the busbar component through the fuse device, so that when a short circuit occurs in the battery cell or the sampling component, the fuse device can disconnect the electrical connection between the busbar component and the voltage sampling line, thereby enabling the battery cell and the sampling component to be open-circuited, so as to alleviate the phenomenon that the battery cell or the sampling component is further damaged, and then can effectively improve the use stability and service life of the battery.

[0031] In some embodiments, along the third direction, the busbar component is disposed on one side of the plurality of battery cells, and the fuse device is disposed on the side of the busbar component away from the battery cells; wherein, the fuse device includes 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 includes 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 along the third direction, at least a portion of the first insulating layer is located between the second conductive region and the busbar component to insulate and isolate the second conductive region and the busbar component.

[0032] 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 includes a first conductive region, a fuse, and a second conductive region that are connected in sequence. The first conductive region and the second conductive region are respectively connected to the busbar component and the first section of the voltage sampling line, so as to enable the voltage sampling line of the sampling component to be electrically connected to the busbar component through the conductive layer, and when a short circuit occurs in the battery cell or the sampling component, the fuse of the conductive layer can be blown to disconnect the electrical connection between the first conductive region and the second conductive region, thereby enabling the battery cell and the sampling component to be open-circuited. Among them, by arranging the first insulating layer and the second insulating layer in a stacked and connected structure along the third direction, the first insulating layer and the second insulating layer can clamp and assemble the conductive layer, and at least a portion of the first insulating layer is located between the second conductive region and the busbar component. On the one hand, a battery with this structure can form insulating structures on both sides of the conductive layer in the third direction, which is beneficial to further increasing the creepage distance between the conductive layer and other components, and is beneficial to further reducing the overlapping phenomenon between the conductive layer and other components, thereby further reducing the risk of internal short circuit during the use of the battery and improving the reliability of the battery. On the other hand, the first insulating layer and the second insulating layer can play a certain stabilizing role on the conductive layer, which is beneficial to further improving the assembly stability of the fuse device on the busbar component, and thus can effectively improve the use stability and service life of the battery.

[0033] In some embodiments, along the third direction, the projection of the fuse device is located within the busbar component.

[0034] In the above technical solution, by setting the projection of the insurance device in the third direction to be entirely located within the busbar component, on the one hand, it can improve the assembly stability of the insurance device on the busbar component to reduce the risk of the insurance device falling off, and can alleviate the collision phenomenon between the insurance device and other components. On the other hand, it can reduce the overlapping phenomenon between the conductive layer of the insurance device and other components to reduce the risk of internal short - circuit occurring during the use of the battery, which is beneficial to improving the reliability of the battery in use.

[0035] In some embodiments, a gap is formed between the first conductive region and the second conductive region; wherein, along the third direction, the regions of the first insulating layer and the second insulating layer corresponding to the gap are connected to each other to separate the first conductive region and the second conductive region.

[0036] In the above technical solution, by connecting the portions of the first insulating layer and the second insulating layer corresponding to the gap between the first conductive region and the second conductive region in the third direction, the first insulating layer and the second insulating layer can also play an insulating and isolating role for the first conductive layer and the second conductive layer, so as to achieve a physical separation between the first conductive region and the second conductive region, and can increase the creepage distance between the first conductive region and the second conductive region. Furthermore, it can alleviate the phenomenon of mis - overlapping between the first conductive region and the second conductive region, which is beneficial to reducing the risk of failure of the insurance device.

[0037] 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 an accommodation space, and the conductive layer is accommodated within the accommodation space.

[0038] In the above technical solution, by connecting the edge region of the first insulating layer and the edge region of the second insulating layer to each other, the first insulating layer and the second insulating layer can jointly form an accommodation space for accommodating the conductive layer. For a battery with such a structure, on the one hand, it can further reduce the overlapping phenomenon between the conductive layer and other components, thereby further reducing the risk of internal short - circuit occurring during the use of the battery to improve the reliability of the battery in use. On the other hand, it can further enhance the stabilizing effect of the first insulating layer and the second insulating layer on the conductive layer, which is beneficial to improving the structural stability of the insurance device, and can further improve the assembly stability of the insurance device on the busbar component.

[0039] In some embodiments, the first insulating layer is provided with a first window, and the first window is 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.

[0040] In the above technical solution, a first window is provided on the first insulating layer, and the first window can expose a part of the first conductive region of the conductive layer in the third direction, so as to facilitate the connection between the bus bar component and the exposed region of the first conductive region, which is beneficial to reducing the connection difficulty between the bus bar component and the first conductive region, and can improve the connection quality between the bus bar component and the first conductive region.

[0041] In some embodiments, along the third direction, the projection of the first window is located within the first conductive region.

[0042] In the above technical solution, by setting the projection of the first window in the third direction to be entirely located within the first conductive region, on the one hand, it can alleviate the phenomenon that the exposed area of the first conductive region is too large, so as to reduce the overlap risk between the first conductive region and other components, and on the other hand, it can alleviate the phenomenon that the edge of the first conductive region is exposed, which is beneficial to improving the stability of the first conductive region assembled between the first insulating layer and the second insulating layer, and thus can reduce the risk of the first conductive region falling off from the first window.

[0043] In some embodiments, the first conductive region is welded to the bus bar component, and the second insulating layer is provided with a second window, and the second window is configured to expose a part of the first conductive region; wherein, the projections of the second window and the first window in the third direction coincide with each other.

[0044] In the above technical solution, by providing a second window on the second insulating layer that can expose a part of the first conductive region, and the second window and the first window have a structure whose projections coincide in the third direction, it is possible to weld the first conductive region and the bus bar component from the side of the first conductive region facing away from the bus bar component and corresponding to the position of the second window, and there is no need to position the overlapping region of the second window and the first window in the third direction when welding the first conductive region and the bus bar component. On the one hand, it can reduce the difficulty of welding and assembling the first conductive region and the bus bar component to improve the battery assembly efficiency, and on the other hand, it can achieve that there is no need to penetrate the second insulating layer when welding the first conductive region and the bus bar component, which is beneficial to reducing the welding power required for welding the first conductive region and the bus bar component, and can effectively improve the welding quality between the first conductive region and the bus bar component.

[0045] In some embodiments, the second insulating layer is provided with a third window, and the third window is configured to expose a part of the second conductive region, and the exposed part of the second conductive region is connected to the first section.

[0046] In the above technical solution, a third window is provided on the second insulating layer, and the third window can expose a part of the second conductive region of the conductive layer in the third direction, so as to facilitate the connection between the first section of the voltage sampling line and the exposed area of the second conductive region, which is beneficial to reducing the connection difficulty between the first section of the voltage sampling line and the second conductive region, and can improve the connection quality between the first section of the voltage sampling line and the second conductive region.

[0047] In some embodiments, along the third direction, the projection of the third window is located within the second conductive region.

[0048] In the above technical solution, by setting the projection of the third window in the third direction to be entirely located within the second conductive region, on the one hand, it can alleviate the phenomenon that the exposed area of the second conductive region is too large, so as to reduce the overlapping risk between the second conductive region and other components, and on the other hand, it can alleviate the phenomenon that the edge of the second conductive region is exposed, which is beneficial to improving the stability of the second conductive region assembled between the first insulating layer and the second insulating layer, and thus can reduce the risk of the second conductive region falling off from the third window.

[0049] In some embodiments, the first insulating layer and the second insulating layer are thermally compounded and connected.

[0050] In the above technical solution, by adopting a thermally compounded connection structure to connect the first insulating layer and the second insulating layer, on the one hand, it can improve the connection reliability of the first insulating layer and the second insulating layer, so as to improve the structural stability and reliability of the conductive layer arranged between the first insulating layer and the second insulating layer, and on the other hand, it can reduce the assembly difficulty of the first insulating layer and the second insulating layer, so as to improve the assembly efficiency of the insurance device.

[0051] In some embodiments, the first conductive region is welded to the busbar component, and the second conductive region is welded to the conductor of the first section.

[0052] In the above technical solution, by setting the first conductive region and the busbar component to be welded to each other, it is beneficial to improve the connection reliability between the first conductive region and the busbar component, so as to reduce the risk of the insurance device failing due to the separation of the first conductive region and the busbar component, and is beneficial to improving the current-carrying capacity between the first conductive region and the busbar component. Similarly, by setting the second conductive region and the conductor of the first section to be welded to each other, it is beneficial to improve the connection reliability between the second conductive region and the first section of the voltage sampling line, so as to reduce the risk of the insurance device failing due to the separation of the second conductive region and the first section of the voltage sampling line, and is beneficial to improving the current-carrying capacity between the second conductive region and the first section of the voltage sampling line.

[0053] In some embodiments, the conductive layer includes a first foil and a second foil that are compound-connected 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 portion of the first foil located in the first conductive region is welded to the busbar component, and the portion of the second foil located in the second conductive region is welded to 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.

[0054] In the above technical solution, the conductive layer is provided with a first foil and a second foil that are compound-connected 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 the portion of the first foil located in the first conductive region is welded to the busbar component. Similarly, by setting the material of the second foil to be the same as the material of the conductor of the first section, and the portion of the second foil located in the second conductive region is welded to the conductor of the first section, a structure in which the first conductive region and the busbar component are welded with the same material is realized, and a structure in which the second conductive region and the conductor of the first section are welded with the same material can be realized. On the one hand, it can reduce the welding difficulty between the first conductive region and the busbar component and between the second conductive region and the conductor of the first section. On the other hand, it can alleviate the quality problems caused by welding between different materials, which is beneficial to improving the welding quality between the first conductive region and the busbar component and between the second conductive region and the conductor of the first section.

[0055] In some embodiments, the materials of the conductive layer, the busbar component, and the conductor of the first section are all the same.

[0056] In the above technical solution, by setting the conductive layer, the busbar component, and the conductor of the first section of the fuse device to be of the same material structure, a structure in which the first conductive region and the busbar component and the second conductive region and the conductor of the first section are all welded with the same material is realized. On the one hand, it can reduce the welding difficulty between the first conductive region and the busbar component and between the second conductive region and the conductor of the first section. On the other hand, it can alleviate the quality problems caused by welding between different materials, which is beneficial to improving the welding quality between the first conductive region and the busbar component and between the second conductive region and the conductor of the first section.

[0057] 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 region is the same as the material of the busbar component, and the material of the second conductive region is the same as the material of the conductor of the first section.

[0058] In the above technical solution, by setting the material of the first conductive region of the conductive layer to be the same as that of the bus bar component, and setting the material of the second conductive region of the conductive layer to be the same as that of the conductor of the first section, a structure in which the first conductive region and the bus bar component are welded and connected with the same material is realized, and a structure in which the second conductive region and the conductor of the first section are welded and connected with the same material can be realized. On the one hand, the welding difficulty between the first conductive region and the bus bar component and between the second conductive region and the conductor of the first section can be reduced. On the other hand, the quality problems caused by the welding connection between different materials can be alleviated, which is beneficial to improving the welding quality between the first conductive region and the bus bar component and between the second conductive region and the conductor of the first section.

[0059] In some embodiments, the sampling assembly further includes a temperature detector, the temperature detector is disposed at the sampling point, and the temperature detector is configured to detect the temperature of the bus bar component or the battery cell; wherein, 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 the third segment, and the second wire harness segment of the temperature sampling wire is the fourth segment. The third segment is electrically connected to the temperature detector, and one end of the fourth segment far from the third segment is used for electrically connecting to the battery management system.

[0060] In the above technical solution, the sampling assembly is further provided with a temperature detector, the temperature detector is electrically connected to two temperature sampling wires in the temperature sampling wire group, and the temperature detector is disposed at the sampling point, so that the sampling assembly can also obtain the temperature of the bus bar component or the battery cell in the battery during use.

[0061] In some embodiments, the insulating outer shells of the fourth segments of the two temperature sampling wires in the temperature sampling wire group are adjacent and connected.

[0062] In the above technical solution, by setting the insulating outer shells of the fourth segments of the two temperature sampling wires in the same temperature sampling wire group to be adjacent and connected, on the one hand, it is convenient to strip the two temperature sampling wires from other wire harnesses at the same time and then strip the two temperature sampling wires from each other, so as to reduce the forming difficulty of the third segments of the two temperature sampling wires. On the other hand, the phenomenon that the third segments of the two temperature sampling wires in the same temperature sampling wire group are too far apart can be alleviated, so as to reduce the connection difficulty between the third segments of the two temperature sampling wires and the temperature detector.

[0063] In some embodiments, the third segments of the two temperature sampling wires in the temperature sampling wire group are spaced apart.

[0064] In the above technical solution, the third segments of two temperature sampling lines in the same temperature sampling line group are arranged at intervals to relieve the interference phenomenon between the third segments of the two temperature sampling lines and reduce the short-circuit risk between the third segments of the two temperature sampling lines.

[0065] In some embodiments, the temperature detector has a positive connection line and a negative connection line, and the positive connection line and the negative connection line are respectively connected to the third segments of two of the temperature sampling lines in the temperature sampling line group to electrically connect the temperature detector and the two temperature sampling lines in the temperature sampling line group.

[0066] In the above technical solution, the temperature detector is provided with a positive connection line and a negative connection line, and the positive connection line and the negative connection line are respectively connected to the third segments of two temperature sampling lines in the temperature sampling line group, so as to realize the electrical connection between the temperature detector and the two temperature sampling lines in the temperature sampling line group. The sampling component with this structure can reduce the assembly difficulty between the temperature detector and the temperature sampling line and is conducive to improving the assembly efficiency of the sampling component.

[0067] In some embodiments, at least one of the positive connection line and the third segment connected thereto forms a second bending segment; and / or at least one of the negative connection line and the third segment connected thereto forms a third bending segment.

[0068] In the above technical solution, by forming a second bending segment on at least one of the positive connection line and the third segment connected thereto, at least one of the positive connection line and the third segment connected thereto forms a bent structure, so that the second bending segment can play a certain buffering role when the positive connection line and the third segment connected thereto are pulled, and the second bending segment can absorb and adapt to the displacement generated by the sampling point relative to the sampling component in multiple directions. Furthermore, the pulling force on the third segment of the positive connection line and the temperature sampling line connected thereto during use can be further reduced to reduce the risk of damage or failure of the sampling component during use. Similarly, by forming a third bending segment on at least one of the negative connection line and the third segment connected thereto, at least one of the negative connection line and the third segment connected thereto forms a bent structure, so that the third bending segment can play a certain buffering role when the negative connection line and the third segment connected thereto are pulled, and the third bending segment can absorb and adapt to the displacement generated by the sampling point relative to the sampling component in multiple directions. Furthermore, the pulling force on the third segment of the negative connection line and the temperature sampling line connected thereto during use can be further reduced to reduce the risk of damage or failure of the sampling component during use.

[0069] In some embodiments, the connection positions of the positive electrode connection line and the corresponding third section are spaced apart from the connection positions of the negative electrode connection line and the corresponding third section.

[0070] In the above technical solution, by setting the connection positions of the positive electrode connection line and the corresponding third section and the connection positions of the negative electrode connection line and the corresponding third section to be spaced apart from each other, the interference effect between them is reduced, which is beneficial to reducing the connection difficulty between the positive electrode connection line and the corresponding third section and between the negative electrode connection line and the corresponding third section, and can reduce the short - circuit risk between the positive electrode connection line and the negative electrode connection line and between the two temperature sampling lines.

[0071] In some embodiments, the distance between the connection position of the positive electrode connection line and the corresponding third section and the connection position of the negative electrode connection line and the corresponding third section is greater than or equal to 5 mm.

[0072] In the above technical solution, by setting the distance between the connection position of the positive electrode connection line and the corresponding third section and the connection position of the negative electrode connection line and the corresponding third section to be greater than or equal to 5 mm, the spacing distance between the connection position of the positive electrode connection line and the corresponding third section and the connection position of the negative electrode connection line and the corresponding third section is further increased, which is beneficial to further reducing the short - circuit risk between the positive electrode connection line and the negative electrode connection line and between the two temperature sampling lines.

[0073] In some embodiments, the positive electrode connection line is connected to the corresponding third section by welding; and / or, the negative electrode connection line is connected to the corresponding third section by welding.

[0074] In the above technical solution, by setting the positive electrode connection line and the third section of the corresponding temperature sampling line to be connected by welding to each other, on the one hand, the connection reliability between the positive electrode connection line and the third section of the corresponding temperature sampling line can be improved to reduce the risk of connection failure between the positive electrode connection line and the third section of the corresponding temperature sampling line, and on the other hand, the over - current capacity between the positive electrode connection line and the corresponding temperature sampling line can be improved. Similarly, by setting the negative electrode connection line and the third section of the corresponding temperature sampling line to be connected by welding to each other, on the one hand, the connection reliability between the negative electrode connection line and the third section of the corresponding temperature sampling line can be improved to reduce the risk of connection failure between the negative electrode connection line and the third section of the corresponding temperature sampling line, and on the other hand, the over - current capacity between the negative electrode connection line and the corresponding temperature sampling line can be improved.

[0075] In some embodiments, the temperature detection component is snap - fitted on the busbar component.

[0076] In the above technical solution, by setting the temperature detection component to a structure that is snap - connected to the busbar component, the temperature detection component can detect the temperature of the busbar component or the battery cell. For a battery adopting this structure, on the one hand, it can reduce the assembly difficulty of the temperature detection component to improve the battery assembly efficiency, and on the other hand, it is convenient to disassemble and replace the temperature detection component, which is beneficial to reducing the later maintenance difficulty of the battery.

[0077] In some embodiments, a card slot is provided on the busbar component, and at least part of the temperature detection component is snapped into the card slot.

[0078] In the above technical solution, by providing a card slot on the busbar component and snapping at least part of the temperature detection component into the card slot, the temperature detection component can be snap - connected to the busbar component. The structure is simple and convenient for assembly.

[0079] In some embodiments, the insulating sheaths of the plurality of wire harnesses are integrally formed.

[0080] In the above technical solution, by setting the insulating sheaths of the plurality of wire harnesses to an integrally formed structure, a weak structure is formed at the connection position of the insulating sheaths of the second wire harness segments of two wire harnesses connected to different sampling points. A sampling component adopting this structure can reduce the forming difficulty of the weak structure between the insulating sheaths of the plurality of wire harnesses and improve the forming efficiency, which is beneficial to improving the production efficiency of the sampling component.

[0081] In some embodiments, the insulating sheaths of the plurality of wire harnesses are separately arranged, and the insulating sheath of the second wire harness segment of the wire harness is adhesively connected to the insulating sheath of the wire harness connected to other sampling points.

[0082] In the above technical solution, by setting the insulating sheaths of the plurality of wire harnesses to a separately arranged structure and adhesively connecting the insulating sheaths of the second wire harness segments of two wire harnesses connected to different sampling points, a weak structure is formed at the adhesive connection position of the insulating sheaths of the second wire harness segments of two wire harnesses connected to different sampling points. A sampling component adopting this structure can expand the number of wire harnesses according to the actual situation to facilitate adaptation to different batteries, which is beneficial to improving the applicable range of the sampling component.

[0083] In some embodiments, the sampling component further includes a connector. The connector is connected to one end of the second wire harness segments of the plurality of wire harnesses away from the first wire harness segments, and the connector is used for plug - and - play cooperation with the battery management system to electrically connect the wire harness and the battery management system.

[0084] In the above technical solution, the sampling component is further provided with a connector, and the same ends of the second wire harness segments of multiple wire harnesses are all connected to the connector, so that the plugging and matching of the connector with the battery management system can realize the electrical connection between the multiple wire harnesses and the battery management system, thereby reducing the assembly difficulty between the sampling component and the battery management system, being beneficial to improving the assembly efficiency between the sampling component and the battery management system, facilitating the replacement and maintenance of the sampling component, and being beneficial to reducing the later maintenance cost of the battery.

[0085] In some embodiments, the battery further includes an insulating member; the insulating member is disposed between the sampling component and the multiple battery cells to insulatively isolate the sampling component and the battery cells.

[0086] In the above technical solution, by disposing an insulating member between the sampling component and the multiple battery cells, the insulating member can insulatively isolate the sampling component and the battery cells to reduce the risk of overlap between the sampling component and the battery cells, thereby being able to alleviate the phenomenon of internal short circuit occurring during the use of the battery and improving the use reliability of the battery.

[0087] In some embodiments, the battery includes multiple battery modules, and the battery module includes the multiple current collecting components and the multiple battery cells; wherein, the battery further includes multiple sampling components, and one sampling component is correspondingly disposed for each battery module.

[0088] In the above technical solution, the battery is provided with multiple battery modules and multiple sampling components, and one sampling component is correspondingly disposed for each battery module, so that while increasing the capacitance of the battery, the assembly difficulty between the sampling component and the battery module can be reduced to reduce the sampling difficulty of the battery module.

[0089] In some embodiments, along a third direction, the current collecting component is disposed on one side of the multiple battery cells, and the sampling component is located on the side of the multiple battery cells where the current collecting component is disposed; wherein, the battery further includes a box body, and the box body includes a first box body and a second box body arranged along the third direction, and the first box body and the second box body are mutually covered and jointly define an assembly space for accommodating the battery cells and the sampling component.

[0090] In the above technical solution, by arranging the busbar component and the sampling component on the same side of multiple battery cells in the third direction, and setting the closing direction of the first box body and the second box body of the box to be the same as the arrangement direction of the sampling component and the battery cells, on the one hand, the assembly difficulty between the battery cells and the sampling component can be reduced, and the difficulty of assembling the battery cells and the sampling component into the box can be reduced, so as to improve the assembly efficiency of the battery. On the other hand, it is convenient to maintain or replace the sampling component after opening the first box body and the second box body, which is beneficial to reducing the later maintenance cost of the battery.

[0091] Second, the embodiment of the present application also provides an electrical device, including the above battery, and the battery is used to provide electrical energy. Description of the Drawings

[0092] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required 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 limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0093] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0094] Figure 2 Exploded view of the structure of a battery provided by some embodiments of the present application;

[0095] Figure 3 Assembly schematic diagram of a battery module and a sampling component provided by some embodiments of the present application;

[0096] Figure 4 Top view of the battery module and the sampling component after being assembled with each other in the third direction provided by some embodiments of the present application;

[0097] Figure 5 For Figure 4 Partial enlarged view of part A after the battery module and the sampling component shown are assembled with each other;

[0098] Figure 6 Structural schematic diagram of a sampling component provided by some embodiments of the present application;

[0099] Figure 7 For Figure 6 Partial enlarged view of part B of the sampling component shown;

[0100] Figure 8 Cross-sectional view of the wire harness main body of the sampling component provided by some embodiments of the present application perpendicular to the first direction;

[0101] Figure 9 Partial structural schematic diagram of the battery module provided by some embodiments of the present application;

[0102] Figure 10 Structural schematic diagram of the fuse device provided by some embodiments of the present application;

[0103] Figure 11 Exploded view of the structure of the fuse device provided by some embodiments of the present application;

[0104] Figure 12 Structural schematic diagram of the conductive layer of the fuse device provided by some embodiments of the present application;

[0105] Figure 13 Front view of the fuse device provided by some embodiments of the present application facing the first insulating layer in the third direction;

[0106] Figure 14 Front view of the fuse device provided by some embodiments of the present application facing the second insulating layer in the third direction;

[0107] Figure 15 Cross-sectional view of the conductive layer of the fuse device provided by some embodiments of the present application perpendicular to the first direction.

[0108] Icons: 1000 - vehicle; 100 - battery; 10 - box; 11 - first box body; 12 - second box body; 20 - battery module; 21 - battery cell; 211 - electrode terminal; 22 - busbar component; 30 - sampling component; 31 - wire harness; 311 - conductor; 312 - insulating housing; 313 - weak structure; 314 - first wire harness segment; 315 - second wire harness segment; 32 - voltage sampling wire; 321 - first segment; 3211 - first bending segment; 3212 - straight segment; 322 - second segment; 3221 - first end; 33 - connector; 34 - wire harness body; 341 - first surface; 3412 - groove; 35 - temperature detection element; 351 - positive connection wire; 3511 - second bending segment; 352 - negative connection wire; 3521 - third bending segment; 36 - temperature sampling wire group; 361 - temperature sampling wire; 3611 - third segment; 3612 - fourth segment; 40 - fuse device; 41 - conductive layer; 411 - first conductive region; 4111 - first part; 4112 - second part; 4113 - third part; 412 - fuse; 413 - second conductive region; 414 - gap; 415 - first foil; 416 - second foil; 42 - first insulating layer; 421 - first window; 43 - second insulating layer; 431 - second window; 432 - third window; 50 - insulating part; 200 - controller; 300 - motor; X - first direction; Y - second direction; Z - third direction. Detailed implementation manners

[0109] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the following will clearly describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0110] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the description of this application in the specification are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order or primary-secondary relationship.

[0111] Referring to "embodiments" in this application means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0112] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0113] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0114] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thicknesses, lengths, widths, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0115] In this application, "a plurality of" means two or more (including two).

[0116] In an embodiment of this application, the battery cell may be a secondary battery, which refers to a battery cell that can be activated by charging after discharging so that the active material can be reused.

[0117] The battery cell may 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-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of this application are not limited thereto.

[0118] 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 process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and allow the active ions to pass through at the same time.

[0119] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

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

[0121] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0122] In some embodiments, the electrode assembly further includes a separator, which is disposed between the positive electrode and the negative electrode.

[0123] In some embodiments, the separator is a separator membrane. The types of separator membranes can be various, and any well-known porous structure separator membrane with good chemical stability and mechanical stability can be selected.

[0124] As an example, the material of the separator membrane may include at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, and polyvinylidene fluoride. The separator membrane may be a single-layer thin film or a multi-layer composite thin film. When the separator membrane is a multi-layer composite thin film, the materials of each layer may be the same or different. The separator may be a separate component located between the positive and negative electrodes, or may be attached to the surfaces of the positive and negative electrodes.

[0125] In some embodiments, the separator is a solid electrolyte. The solid electrolyte is disposed between the positive electrode and the negative electrode, and simultaneously functions to transport ions and isolate the positive and negative electrodes.

[0126] 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 liquid, gel-like, or solid. Among them, the liquid electrolyte includes an electrolyte salt and a solvent.

[0127] In some embodiments, the electrode assembly has a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0128] In some embodiments, the electrode assembly has a stacked structure.

[0129] As an example, multiple positive electrode sheets and multiple negative electrode sheets can be respectively provided, and the multiple positive electrode sheets and the multiple negative electrode sheets are alternately stacked.

[0130] As an example, multiple positive electrode sheets can be provided, and the negative electrode sheet is folded to form multiple stacked folding segments, and a positive electrode sheet is clamped between adjacent folding segments.

[0131] As an example, both the positive electrode sheet and the negative electrode sheet are folded to form multiple stacked folding segments.

[0132] As an example, multiple separators can be provided and are respectively disposed between any adjacent positive electrode sheet or negative electrode sheet.

[0133] As an example, the separator can be continuously provided and is disposed between any adjacent positive electrode sheet or negative electrode sheet by folding or winding.

[0134] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or multi-prismatic, etc.

[0135] In some embodiments, the electrode assembly is provided with tabs, and the tabs can conduct current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0136] 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.

[0137] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell, or a battery cell of other shapes. The prismatic battery cell includes, but is not limited to, a square-shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc.

[0138] 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.

[0139] In some embodiments, the battery can be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0140] In some embodiments, the battery may be a battery pack, which includes a box body and battery cells, and the battery cells or battery modules are accommodated in the box body.

[0141] In some embodiments, the box body may be part of the chassis structure of a vehicle. For example, part of the box body may form at least part of the floor of the vehicle, or part of the box body may form at least part of the cross beams and longitudinal beams of the vehicle.

[0142] In some embodiments, the battery may be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0143] The battery has outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide application range, 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 various design factors at the same time. For example, performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the safety of the battery also needs to be considered.

[0144] For a general battery, the battery includes a box body and a plurality of battery cells arranged in the box body. The plurality of battery cells are electrically connected through a busbar component to achieve series or parallel connection between the plurality of battery cells. In the related art, in order to ensure the safety of the battery cells, a sampling component is generally arranged in the battery. Through the sampling component, the voltage and temperature of the battery cells during use can be collected to facilitate obtaining the usage condition of the battery. Among them, the sampling component usually includes a main wire harness and branch wire harnesses. The main wire harness is formed by bundling a plurality of wire harnesses. Each branch wire harness is connected to one of the wire harnesses in the main wire harness, and the branch wire harness is electrically connected to the busbar component of the battery cell, or the branch wire harness is electrically connected to the temperature sensor arranged on the busbar component to obtain the voltage or temperature of the battery cell through the sampling component. However, in the process of using this structure of battery, due to the expansion and contraction of the battery cells and the relatively complex operating conditions of the battery, the branch wire harnesses will be pulled, resulting in the branch wire harnesses being extremely prone to breakage or connection failure with components such as the busbar component during use, resulting in the risk of failure or damage of the sampling component during use, and thus being unfavorable for improving the usage stability and service life of the battery.

[0145] Based on the above considerations, in order to solve the problems of poor usage stability and short service life of the battery, an embodiment of the present application provides a battery, which includes a plurality of busbar components, a plurality of battery cells, and a sampling component. The busbar components are electrically connected to the battery cells, and sampling points are provided on the plurality of busbar components and / or the plurality of battery cells. The sampling component includes a plurality of wire harnesses for connecting to the plurality of sampling points. The wire harness includes a conductor and an insulating housing, and the insulating housing covers the outside of the conductor. The wire harness includes a first wire harness segment and a second wire harness segment that are connected to each other in its extending direction. The first wire harness segment of the wire harness is separated from the wire harnesses connected to other sampling points, and the insulating housing of the second wire harness segment of the wire harness is connected to the insulating housings of the wire harnesses connected to other sampling points and forms a weak structure at the connection point. One end of the second wire harness segment away from the first wire harness segment is used for electrical connection to the battery management system.

[0146] In the battery with this structure, the insulating housing of the second wire harness segment of the wire harness of the sampling component is connected to the insulating housings of the wire harnesses connected to other sampling points and forms a weak structure at the connection point, and the first wire harness segment of the wire harness is separated from the wire harnesses connected to other sampling points at the weak structure, so that the first wire harness segments of the plurality of wire harnesses can be connected to different sampling points, thereby enabling the acquisition of information from different sampling points of the battery. When the battery is shaken or the battery cells expand and contract during use, causing pulling on the first wire harness segment of the wire harness, the wire harness can be further peeled off from other wire harnesses at the weak structure, enabling the first wire harness segment of the wire harness to have the ability to separate from other wire harnesses when subjected to external pulling force. As a result, the weak structure between the second wire harness segment of the wire harness and other wire harnesses can buffer and absorb the external force applied to the wire harness, alleviating the phenomenon of rigid pulling on the first wire harness segment of the wire harness. Furthermore, it can reduce the occurrence of breakage or connection failure of the wire harness of the sampling component during use, thereby reducing the risk of failure or damage of the sampling component during use, which is beneficial to improving the usage stability and service life of the battery.

[0147] The battery disclosed in the embodiment of the present application can be used, but is not limited to, power-consuming devices such as vehicles, ships, or aircraft. A power supply system of the power-consuming device can be formed using the battery disclosed in the present application. In this way, it is beneficial to alleviate the problems of failure or damage of the sampling component in the battery during use, thereby improving the usage stability and service life of the battery.

[0148] An embodiment of the present application provides a power-consuming device using the battery as a power source. The power-consuming device can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc. The spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0149] For the convenience of description, the following embodiments take an electric device in an embodiment of the present application as a vehicle as an example for illustration.

[0150] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery 100 is disposed inside the vehicle 1000. The battery 100 can be disposed 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 to the vehicle 1000. For example, the battery 100 can be used as an operating power source or a power source for the vehicle 1000. 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 to the motor 300. For example, it is used for the working power requirements of the vehicle 1000 during startup, navigation, and driving.

[0151] In some embodiments of the present application, the battery 100 can not only be used as an operating power source or a power source for the vehicle 1000, but also be used as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0152] Please refer to Figure 2 , Figure 3 and Figure 4 , Figure 2 , which is an exploded view of the structure of the battery 100 provided in some embodiments of the present application, Figure 3 , which is an assembly schematic diagram of the battery module 20 and the sampling component 30 provided in some embodiments of the present application, Figure 4 , which is a top view of the battery module 20 and the sampling component 30 after being assembled with each other in the third direction Z. 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. The battery module 20 includes a plurality of battery cells 21 stacked along the first direction X.

[0153] Among them, 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 may include a first box body 11 and a second box body 12. The first box body 11 and the second box body 12 are covered with each other along the third direction Z. 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 may be a hollow structure with one end open, and the first box body 11 may be a plate-like structure. The first box body 11 covers the open side of the second box body 12 so that the first box body 11 and the second box body 12 jointly define an assembly space; the first box body 11 and the second box body 12 may also both be hollow structures with one side open, and the open side of the first box body 11 covers the open side of the second box body 12.

[0154] Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be of various shapes, such as, a cylinder, a cuboid or a cube, etc. Exemplarily, in Figure 2 the box body 10 is in the shape of a cuboid.

[0155] Optionally, in the battery 100, the battery module 20 accommodated in the box body 10 can be one or multiple. When there are multiple battery modules 20 arranged in the box body 10, the multiple battery modules 20 can be connected in series, in parallel or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery modules 20. The multiple battery modules 20 can be directly connected in series, in parallel or in a mixed connection together, and then the whole formed by the multiple battery modules 20 is accommodated in the box body 10.

[0156] Exemplarily, in combination with Figure 2 and Figure 3 as shown, 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 connected in series with each other. The first direction X, the second direction Y and the third direction Z are perpendicular to each other in pairs.

[0157] In Figure 3 each battery module 20 includes a plurality of busbar components 22 and a plurality of battery cells 21 stacked along the first direction X. The plurality of busbar components 22 are located on one side of the plurality of battery cells 21 in the third direction Z. The busbar components 22 are used to connect the plurality of battery cells 21 to realize the electrical connection between the plurality of battery cells 21. Exemplarily, the first direction X is the thickness direction of the battery cell 21, the second direction Y is the length direction of the battery cell 21, and the third direction Z is the height direction of the battery cell 21.

[0158] Among them, referring to Figure 3 and Figure 4 , and please further refer to Figure 5 , Figure 5 ForFigure 4 The partial enlarged view of the position A after the battery module 20 and the sampling component 30 shown in the figure are assembled with each other. Two electrode terminals 211 are provided at one end of the battery cell 21 in the third direction Z. The polarities of the two electrode terminals 211 are opposite. The two electrode terminals 211 are respectively used for inputting or outputting the positive and negative electrodes of the battery cell 21. The bus bar component 22 is connected to the electrode terminals 211 of the battery cell 21 to electrically connect a plurality of battery cells 21. It should be noted that the plurality of battery cells 21 in the battery module 20 may be in a series or parallel structure. Exemplarily, in Figure 3 the plurality of battery cells 21 in the battery module 20 are in a structure sequentially connected in series through a plurality of bus bar components 22.

[0159] Optionally, each battery cell 21 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. The battery cell 21 may be in a cuboid, cylindrical, prismatic or other shape, etc. Exemplarily, in Figure 2 and Figure 3 the battery cell 21 is in a cuboid structure.

[0160] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 and Figure 5 , and further referring to Figure 6 、 Figure 7 and Figure 8 , Figure 6 is the schematic structural diagram of the sampling component 30 provided by some embodiments of the present application, Figure 7 is Figure 6 the partial enlarged view of the position B of the sampling component 30 shown in the figure, Figure 8A cross-sectional view of the wire harness main body 34 of the sampling component 30 provided in some embodiments of the present application, perpendicular to the first direction X. The present application provides a battery 100, which includes a battery module 20 and a sampling component 30. The battery module 20 includes a plurality of busbar components 22 and a plurality of battery cells 21. The busbar components 22 are electrically connected to the battery cells 21, and sampling points are provided on each of the plurality of busbar components 22 and / or the plurality of battery cells 21. The sampling component 30 includes a plurality of wire harnesses 31. Each wire harness 31 includes a conductor 311 and an insulating outer shell 312. The insulating outer shell 312 covers the outside of the conductor 311. The wire harness 31 includes a first wire harness segment 314 and a second wire harness segment 315 that are connected to each other in its extending direction. The first wire harness segment 314 is connected to the sampling point, and one end of the second wire harness segment 315 away from the first wire harness segment 314 is used for electrical connection with a battery management system (not shown in the figure). The first wire harness segment 314 of the wire harness 31 is separated from the wire harnesses 31 connected to other sampling points, and the insulating outer shell 312 of the second wire harness segment 315 of the wire harness 31 is connected to the insulating outer shells 312 of the wire harnesses 31 connected to other sampling points and forms a weak structure 313 at the connection point.

[0161] Among them, sampling points are provided on each of the plurality of busbar components 22 and / or the plurality of battery cells 21. That is to say, the sampling points for the battery module 20 to be connected to the sampling component 30 can be provided on the busbar components 22, can also be provided on the battery cells 21, or sampling points can be provided on both the busbar components 22 and the battery cells 21. That is, the wire harnesses 31 in the sampling component 30 can be connected to the busbar components 22, can also be connected to the battery cells 21, or can be connected to both the busbar components 22 and the battery cells 21 to enable the sampling component 30 to collect and obtain the usage information of the battery module 20.

[0162] The wire harness 31 includes a conductor 311 and an insulating outer shell 312. The insulating outer shell 312 covers the outside of the conductor 311. That is, each wire harness 31 of the sampling component 30 includes two parts, namely a conductor 311 and an insulating outer shell 312, and the insulating outer shell 312 is an insulating part covering the outside of the conductor 311 to achieve insulation isolation between the conductors 311 of the plurality of wire harnesses 31 through the insulating outer shell 312.

[0163] The wire harness 31 includes a first wire harness segment 314 and a second wire harness segment 315 that are connected to each other in its extending direction. That is, each wire harness 31 is divided into two segments in its extending direction, namely 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 separated 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 that is separated from the wire harness 31 connected to other sampling points. The second wire harness segment 315 is the part of the wire harness 31 that is connected to the wire harness 31 connected to other sampling points. That is to say, a part of the wire harness 31 is peeled off from the weak structure 313 from the wire harness 31 connected to other sampling points, so that the peeled-off part of the wire harness 31 is the first wire harness segment 314, and the part of the wire harness 31 that is not peeled off and is still connected to the insulation shell 312 of the wire harness 31 connected to other sampling points is the second wire harness segment 315.

[0164] 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 to say, the insulation shells 312 of the second wire harness segments 315 of multiple wire harnesses 31 are connected to each other, and a weak structure 313 is formed at the connection position between the insulation shells 312 of the second wire harness segments 315 of two wire harnesses 31 for connecting different sampling points. That is, the connection structure between the insulation shells 312 of the second wire harness segments 315 of two wire harnesses 31 for connecting different sampling points is a weak connection relationship, so that the weak structure 313 between the second wire harness segments 315 of two wire harnesses 31 for connecting different sampling points is configured to be damaged when pulled by an external force, so that the two wire harnesses 31 for connecting different sampling points can be further peeled off.

[0165] 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, a weak structure 313 may or may not be formed between the insulation shells 312 of the multiple wire harnesses 31 connected to the same sampling point.

[0166] Optionally, the weak structure 313 between the insulating outer shells 312 of the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points can be of various types. For example, the insulating outer shells 312 of the multiple wire harnesses 31 can be of an integrally formed structure, and a weak area is formed in the insulating outer shell 312 between the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points. This weak area is the weak structure 313 between the adjacent two wire harnesses 31. Of course, the insulating outer shells 312 of the multiple wire harnesses 31 can also be of a split structure, and the insulating outer shells 312 between the second wire harness segments 315 of the two wire harnesses 31 for connecting different sampling points are adhesively bonded to each other, etc., so as to form a weak structure 313 at the adhesive position of the insulating outer shells 312 between the adjacent two wire harnesses 31.

[0167] The first wire harness segment 314 is connected to the sampling point, that is, the first wire harness segment 314 of the wire harness 31 is the part used to be connected to the sampling point. That is to say, the part of the wire harness 31 that is stripped out is used to be connected to the sampling point, while the part of the wire harness 31 that is not stripped out is used to be electrically connected to the battery management system of the battery 100. Among them, if the sampling point is a voltage sampling point, the first wire harness segment 314 is electrically connected to the busbar component 22 or the battery cell 21 to collect and obtain the voltage information of the busbar component 22 or the battery cell 21; if the sampling point is a temperature sampling point, the first wire harness segment 314 is electrically connected to the temperature detection component 35 provided on the busbar component 22 or the battery cell 21 to collect and obtain the temperature information of the busbar component 22 or the battery cell 21.

[0168] It should be noted that if the electrical connection between the first wire harness segment 314 and the busbar component 22 or the battery cell 21 is that the conductor 311 of the first wire harness segment 314 is electrically connected to the busbar component 22 or the battery cell 21, similarly, the electrical connection between the second wire harness segment 315 and the battery management system is that the conductor 311 of the second wire harness segment 315 is electrically connected to the battery management system.

[0169] Optionally, if the first wire harness segment 314 is used to be electrically connected to the busbar component 22 or the battery cell 21, the first wire harness segment 314 can be a structure directly electrically connected to the busbar component 22 or the battery cell 21, or a structure indirectly electrically connected to the busbar component 22 or the battery cell 21. Exemplarily, in Figure 5 ..., the first wire harness segment 314 is a structure indirectly electrically connected to the busbar component 22 through the fuse device 40. Similarly, the second wire harness segment 315 can be a structure directly electrically connected to the battery management system, or a structure indirectly electrically connected to the battery management system. Exemplarily, in Figure 6 ..., one end of the second wire harness segments 315 of the multiple wire harnesses 31 is connected with a connector 33, and the connector 33 is used for plugging and matching with the battery management system to realize the indirect electrical connection between the second wire harness segment 315 of the wire harness 31 and the battery management system.

[0170] For ease of description, refer to Figure 5 and Figure 7 As shown, the part formed by the mutual connection of the second wire harness segments 315 of the multiple wire harnesses 31 of the sampling assembly 30 is the wire harness main body 34 of the sampling assembly 30. That is to say, the part of the wire harness 31 located within the wire harness main body 34 is the second wire harness segment 315, while the part of the wire harness 31 that is stripped from other wire harnesses 31 and not located within the wire harness main body 34 is the first wire harness segment 314.

[0171] In this embodiment, the insulating outer shells 312 of the second wire harness segments 315 of the wire harnesses 31 of the sampling assembly 30 are mutually connected to the insulating outer shells 312 of the wire harnesses 31 connected to other sampling points and form a weak structure 313 at the connection point. Moreover, the first wire harness segments 314 of the wire harnesses 31 are separated from the wire harnesses 31 connected to other sampling points at the weak structure 313, so that the first wire harness segments 314 of the multiple wire harnesses 31 can be connected to different sampling points, thereby enabling the acquisition of information at different sampling points of the battery 100. When the battery 100 of this structure is being used and the first wire harness segments 314 of the wire harnesses 31 are pulled due to shaking or the expansion and contraction of the battery cells 21, the wire harnesses 31 can be further separated from other wire harnesses 31 at the weak structure 313, enabling the first wire harness segments 314 of the wire harnesses 31 to have the ability to separate from other wire harnesses 31 when subjected to external pulling forces. As a result, the weak structure 313 between the second wire harness segments 315 of the wire harnesses 31 and other wire harnesses 31 can buffer and absorb the external forces applied to the wire harnesses 31, alleviating the phenomenon of rigid pulling of the first wire harness segments 314 of the wire harnesses 31. Furthermore, it can reduce the phenomenon of breakage or connection failure of the wire harnesses 31 of the sampling assembly 30 during use, thereby reducing the risk of failure or damage of the sampling assembly 30 during use, which is beneficial to improving the use stability and service life of the battery 100.

[0172] According to some embodiments of the present application, refer to Figure 4 、 Figure 5 and Figure 6 As shown, the second wire harness segments 315 of the multiple wire harnesses 31 all extend along the first direction X and are arranged side by side along the second direction Y. The sampling assembly 30 is located on one side of the multiple battery cells 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 pairwise.

[0173] Among them, the sampling assembly 30 is located on one side of the multiple battery cells 21 in the third direction Z. That is to say, the sampling assembly 30 is arranged on one side of the battery module 20 in the third direction Z.

[0174] The second wire harness segments 315 of the multiple wire harnesses 31 all extend along the first direction X and are arranged side by side along the second direction Y. That is to say, 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 within the wire harness body 34 are arranged side by side along the second direction Y.

[0175] In this embodiment, the sampling assembly 30 is disposed on one side of the multiple battery cells 21 in the third direction Z. By setting the second wire harness segments 315 of the multiple wire harnesses 31 to all extend along the first direction X and arranging the second wire harness segments 315 of the multiple wire harnesses 31 in a structure arranged along the second direction Y, on the one hand, it can save the space occupied by the multiple wire harnesses 31 of the sampling assembly 30 in the third direction Z and facilitate the wiring and assembly of the multiple wire harnesses 31 of the sampling assembly 30. On the other hand, setting the extension direction and arrangement direction of the second wire harness segments 315 of the multiple wire harnesses 31 to be perpendicular to each other can further reduce the difficulty of the wire harness 31 being further peeled off from the weak structure 313 with other wire harnesses 31 when being pulled by an external force, so as to further reduce the pulling force received by the first wire harness segment 314 of the wire harness 31, thereby being able to further alleviate the phenomenon of breakage or connection failure of the wire harness 31 of the sampling assembly 30 during use, so as to further improve the use stability and service life of the battery 100.

[0176] According to some embodiments of the present application, referring to Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, along the second direction Y, the insulating sheaths 312 of the second wire harness segments 315 of adjacent wire harnesses 31 for connecting to different sampling points are connected to each other and form a weak structure 313 at the connection. That is to say, among the multiple second wire harness segments 315 arranged side by side in the second direction Y, the insulating sheaths 312 of the second wire harness segments 315 of the wire harnesses 31 for connecting different sampling points are connected to each other and form a weak structure 313.

[0177] In this embodiment, by forming a weak structure 313 between the second wire harness segments 315 of the wire harness 31 that are adjacent and 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 wire harness 31 that are adjacent and connected to different sampling points can be further peeled off 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 wire harness 31 that is adjacent and connected to different sampling points when being pulled by an external force, so that a part of the second wire harness segment 315 of the wire harness 31 can be further peeled off from the wire harness 31 that is adjacent and connected to different sampling points to form a part of the first wire harness segment 314. Thus, the weak structure 313 between the second wire harness segment 315 of the wire harness 31 and the wire harness 31 that is adjacent and 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 to make up for the pulling phenomenon caused by the shaking of the battery 100 or the expansion and contraction of the battery cell 21 on the first wire harness segment 314 of the wire harness 31, so as to relieve the phenomenon of rigid pulling of the first wire harness segment 314 of the wire harness 31, and further reduce the phenomenon of breakage or connection failure of the wire harness 31 of the sampling component 30 during use.

[0178] According to some embodiments of the present application, referring to Figure 7 As shown, along the second direction Y, the insulating outer shells 312 of the second wire harness segments 315 of the wire harness 31 that are adjacent and used to be connected to the same sampling point are connected to each other and form a weak structure 313 at the connection. That is to say, among the plurality of second wire harness segments 315 arranged side by side in the second direction Y, the insulating outer shells 312 of the second wire harness segments 315 of the wire harness 31 that are used to be connected to the same sampling point are connected to each other and form a weak structure 313.

[0179] In this embodiment, by forming a weak structure 313 between the second wire harness segments 315 of the wire harness 31 that are adjacent and connected to the same sampling point, when the first wire harness segment 314 of the wire harness 31 is pulled, the wire harness 31 and the wire harness 31 that are adjacent and connected to the same sampling point can be further peeled off from the weak structure 313, which is beneficial to further relieve the phenomenon of rigid pulling of the first wire harness segment 314 of the wire harness 31, and further reduce the phenomenon of breakage or connection failure of the wire harness 31 of the sampling component 30 during use.

[0180] According to some embodiments of the present application, referring to Figure 5 and Figure 8As shown, the second wire harness segments 315 of multiple wire harnesses 31 form a wire harness body 34. The wire harness body 34 has two opposite first surfaces 341 in the third direction Z. At least one of the first surfaces 341 is provided with a groove 3412, and the groove 3412 is located between the conductors 311 of the second wire harness segments 315 of at least two wire harnesses 31 adjacent to each other in the second direction Y. The bottom wall of the groove 3412 forms a weak structure 313.

[0181] Among them, the first surfaces 341 are the surfaces on both sides of the wire harness body 34 in the third direction Z. At least one of the first surfaces 341 is provided with a groove 3412, that is, it can be that only one first surface 341 is provided with a groove 3412, or it can be that both first surfaces 341 are provided with grooves 3412.

[0182] Exemplarily, grooves 3412 are formed between the conductors 311 of every two adjacent second wire harness segments 315 in the second direction Y, so that a weak structure 313 is formed between every two adjacent second wire harness segments 315.

[0183] The bottom wall of the groove 3412 forms a weak structure 313, that is to say, the wire harness body 34 forms a weak structure 313 in the area where the groove 3412 is provided, that is, the insulating sheaths 312 of multiple second wire harness segments 315 form a weak structure 313 at the bottom of the groove 3412.

[0184] In this embodiment, a part of the second wire harness segments 315 of multiple wire harnesses 31 forms a wire harness body 34. By providing a groove 3412 on at least one of the first surfaces 341 of the wire harness body 34, and the groove 3412 is located between the conductors 311 of the second wire harness segments 315 of two adjacent wire harnesses 31 in the second direction Y, the structural strength of the area of the wire harness body 34 where the groove 3412 is provided is weakened, so that the bottom wall of the groove 3412 forms a weak structure 313 between two adjacent wire harnesses 31. The structure is simple, convenient for manufacturing, and convenient for two adjacent wire harnesses 31 to separate when being pulled by an external force.

[0185] In some embodiments, as shown in Figure 8 both first surfaces 341 are provided with grooves 3412 and the positions are corresponding to each other in the third direction Z. Along the third direction Z, a weak structure 313 is formed between the bottom surfaces of the corresponding two grooves 3412.

[0186] Among them, both first surfaces 341 are provided with grooves 3412 and the positions are corresponding to each other in the third direction Z, that is to say, grooves 3412 are formed on both sides of the wire harness body 34 in the third direction Z, and the grooves 3412 located on both sides of the wire harness body 34 are structures corresponding to each other one by one in the third direction Z.

[0187] Along the third direction Z, a weak structure 313 is formed between the bottom surfaces of the corresponding two grooves 3412. That is to say, the part of the wire harness body 34 between the bottom surfaces of the two grooves 3412 arranged correspondingly in the third direction Z is the weak structure 313.

[0188] In this embodiment, by arranging grooves 3412 on both of the two first surfaces 341, and the two grooves 3412 are arranged oppositely along the third direction Z, a weak structure 313 is formed between the bottom surfaces of the two grooves 3412 arranged correspondingly in the third direction Z. Thus, on the one hand, the strength of the weak structure 313 can be further weakened to facilitate the separation of two adjacent wire harnesses 31 when being pulled by an external force, and on the other hand, the machining depth of a single groove 3412 can be reduced, which is beneficial to reducing the machining difficulty of the sampling assembly 30.

[0189] Of course, the structure of the sampling assembly 30 is not limited to this. In other embodiments, the sampling assembly 30 can also be other structures. For example, the second wire harness segments 315 of multiple wire harnesses 31 all extend along the first direction X, at least two second wire harness segments 315 of the wire harnesses 31 are arranged side by side along the second direction Y, and at least two second wire harness segments 315 of the wire harnesses 31 are arranged in a stacked manner along the third direction Z. The insulating sheaths 312 of the second wire harness segments 315 of the wire harnesses 31 adjacent along the second direction Y or along the third direction Z are connected to each other and a weak structure 313 is formed at the connection, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other pairwise.

[0190] In this embodiment, by arranging at least two second wire harness segments 315 of multiple wire harnesses 31 of the sampling assembly 30 side by side along the second direction Y, and arranging at least two second wire harness segments 315 of multiple wire harnesses 31 of the sampling assembly 30 in a stacked manner along the third direction Z, it is convenient to form a structure with multiple layers and each layer includes multiple wire harnesses 31 arranged side by side along the second direction Y, which is beneficial to increasing the quantity of the wire harnesses 31 of the sampling assembly 30.

[0191] In some embodiments, referring to Figure 3 and Figure 4 as shown, along the third direction Z, the busbar component 22 and the sampling assembly 30 are arranged on the same side of multiple battery cells 21.

[0192] Among them, along the third direction Z, the busbar component 22 and the sampling assembly 30 are arranged on the same side of multiple battery cells 21. That is to say, the busbar component 22 is connected to one side of multiple battery cells 21 in the third direction Z, and the sampling assembly 30 is located on the side of the battery module 20 where the busbar component 22 is arranged in the third direction Z.

[0193] In this embodiment, by arranging the busbar component 22 and the sampling component 30 on the same side of multiple battery cells 21 in the third direction Z, on the one hand, the battery 100 with this structure can reduce the assembly difficulty between the first wire harness segment 314 of the wire harness 31 and the sampling points, so as to improve the assembly efficiency of the battery 100. On the other hand, it can realize the sharing of part of the space between the busbar component 22 and the sampling component 30 in the third direction Z, which is beneficial to saving the space occupied by the battery 100 in the third direction Z, and can optimize the layout between the battery cells 21 and the multiple wire harnesses 31 of the sampling component 30.

[0194] According to some embodiments of the present application, referring to Figure 5 、 Figure 6 and Figure 7 As shown, the multiple wire harnesses 31 include at least one voltage sampling wire 32. The first wire harness segment 314 of the voltage sampling wire 32 is the first segment 321, and the second wire harness segment 315 of the voltage sampling wire 32 is the second segment 322. The first segment 321 is used for electrically connecting to the sampling points. The first segment 321 has a first position for connecting to the sampling points and a second position for connecting to the second segment 322. At least part of the first segment 321 is bent so that a first bending segment 3211 is formed between the first position and the second position of the first segment 321.

[0195] Among them, the multiple wire harnesses 31 include at least one voltage sampling wire 32. The first wire harness segment 314 of the voltage sampling wire 32 is the first segment 321, and the second wire harness segment 315 of the voltage sampling wire 32 is the second segment 322. The first segment 321 is used for electrically connecting to the sampling points. That is to say, among the multiple wire harnesses 31 of the sampling component 30, there is a voltage sampling wire 32 for electrically connecting to the sampling points, so that the voltage sampling wire 32 among the multiple wire harnesses 31 can collect and obtain the voltage information of the battery cell 21 or the busbar component 22. And the part of the voltage sampling wire 32 for electrically connecting to the sampling points is the first wire harness segment 314 of the wire harness 31, that is, the first segment 321 of the voltage sampling wire 32, while the part of the voltage sampling wire 32 for electrically connecting to 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 wire 32.

[0196] Exemplarily, in Figure 5 the first segment 321 of the voltage sampling wire 32 is electrically connected to the busbar component 22, that is, the first position is the position where the first segment 321 of the voltage sampling wire 32 is connected to the busbar component 22.

[0197] The first position is the position where the first section 321 of the voltage sampling line 32 is connected to the sampling point. If the first section 321 of the voltage sampling line 32 and the sampling point are directly connected, the connection position between the first section 321 of the voltage sampling line 32 and the sampling point is the first position. If the first section 321 of the voltage sampling line 32 and the sampling point are indirectly connected through the fuse device 40, the connection position between the first section 321 of the voltage sampling line 32 and the fuse device 40 is the first position.

[0198] The second position is the position of one end of the second section 322 of the voltage sampling line 32 close to the first section 321, and is also the position where the first section 321 of the voltage sampling line 32 is connected to the harness main body 34. At the same time, the second position is also the position of the peeling point where the voltage sampling line 32 is peeled off from the adjacent harness 31.

[0199] At least part of the first section 321 is bent so that a first bending section 3211 is formed between the first position and the second position on the first section 321. That is to say, a bent structure is formed on the first section 321 of the voltage sampling line 32, and the bent part of the first section 321 of the voltage sampling line 32 is the first bending section 3211 of the first section 321, and the first bending section 3211 is located between the first position and the second position on the first section 321, so that the distance between the first position and the second position is less than the length of the first section 321.

[0200] Exemplarily, in Figure 7 , a local bending of the first section 321 forms the first bending section 3211, so that the first section 321 also has a straight section 3212 connected to the first bending section 3211. Of course, in other embodiments, the first section 321 may also be integrally bent so that the whole of the first section 321 is the first bending section 3211.

[0201] In this embodiment, by setting at least part of the first section 321 of the voltage sampling line 32 peeled off from the adjacent harness 31 to be a bent structure, a first bending section 3211 is formed between the first position connected to the sampling point and the second position connected to the second section 322 on the first section 321, so that the length of the first section 321 can be greater than the distance between the first position and the first position, enabling the first bending section 3211 to play a certain buffering role when the first section 321 is pulled, and enabling the first bending section 3211 to absorb and adapt to displacements generated by the sampling point relative to the sampling assembly 30 in multiple directions. Furthermore, the pulling force on the first section 321 of the voltage sampling line 32 during use can be further reduced, so as to further alleviate the phenomenon that the voltage sampling line 32 of the sampling assembly 30 breaks or fails to connect to the busbar component 22 during use.

[0202] In some embodiments, referring to Figure 7 As shown, the first segment 321 may include a straight segment 3212 and a first bent segment 3211. The first bent segment 3211 connects the straight segment 3212 and the second segment 322, and the straight segment 3212 is electrically connected to the sampling point.

[0203] Among them, the first segment 321 is electrically connected to the busbar component 22. Correspondingly, the straight segment 3212 is electrically connected to the busbar component 22. The first segment 321 may include a straight segment 3212 and a first bent segment 3211, that is, the first segment 321 is a structure with a locally bent first bent segment 3211.

[0204] The first bent segment 3211 connects the straight segment 3212 and the second segment 322, and the straight segment 3212 is electrically connected to the sampling point. That is to say, the first bent segment 3211 of the first segment 321 and the second segment 322 of the voltage sampling line 32 are directly connected structures, so that the first segment 321 is a first bent segment 3211 formed by a partially bent part connected to the second segment 322. It should be noted that in other embodiments, it may also be a structure in which the first bent segment 3211 is connected to the second segment 322 through the straight segment 3212. Correspondingly, the first bent segment 3211 is electrically connected to the sampling point. Of course, the first segment 321 may also include two straight segments 3212. The first bent segment 3211 is connected between the two straight segments 3212. One of the two straight segments 3212 is connected to the second segment 322, and the other straight segment 3212 is electrically connected to the sampling point.

[0205] In this embodiment, the first segment 321 of the voltage sampling line 32 is provided with a straight segment 3212 and a first bent segment 3211, and the first bent segment 3211 of the first segment 321 is a structure directly connected to the second segment 322 of the voltage sampling line 32, so that the connection position between the first bent segment 3211 and the second segment 322 is located at the position of the peeling point where the voltage sampling line 32 is peeled off from the adjacent wire harness 31. Thus, a structure in which the bent part of the first segment 321 is connected to the second segment 322 can be realized, which is beneficial to further reducing the difficulty of further peeling the voltage sampling line 32 from the weak structure 313 of the other wire harness 31 when the voltage sampling line 32 is pulled by an external force, so as to further reduce the pulling force on the first segment 321 of the voltage sampling line 32, and further relieve the phenomenon that the voltage sampling line 32 of the sampling component 30 breaks or fails to be connected to the busbar component 22 during use, so as to improve the use stability and service life of the battery 100.

[0206] According to some embodiments of the present application, referring to Figure 5 、 Figure 6 and Figure 7As shown, 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, where the second direction Y is perpendicular to the first direction X. One 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. The first bending section 3211 bends from the straight section 3212 along the direction pointing from the first end 3221 to the second position.

[0207] Among them, the first section 321 is electrically connected to the busbar component 22. Correspondingly, the busbar component 22 is located on one side of the second section 322 in the second direction Y. The second section 322 extends along the first direction X. The busbar component 22 is located on one side of the second section 322 in the second direction Y. That is to say, the wire harness main body 34 of the sampling assembly 30 is a structure extending along the first direction X, and the busbar component 22 is arranged on at least one side of the wire harness main body 34 of the sampling assembly 30 in the second direction Y.

[0208] Exemplarily, in Figure 5 the busbar components 22 are arranged on both sides of the wire harness main body 34 of the sampling assembly 30 in the second direction Y, and the wire harness main body 34 of the sampling assembly 30 is spaced from the busbar components 22 in the second direction Y.

[0209] One 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 to say, 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. In the embodiment where the sampling assembly 30 further includes a connector 33, it is the first end 3221 of the second section 322 that is connected to the connector 33.

[0210] The first bending section 3211 bends from the straight section 3212 along the direction pointing from the first end 3221 to the second position. That is, in the first direction X, a part of the first section 321 bends away from the first end 3221 of the second section 322 to form the first bending section 3211 that bends along the direction pointing from the first end 3221 to the second position, and the first bending section 3211 is located on one side of the straight section 3212 away from the first end 3221 of the second section 322 in the first direction X.

[0211] In this embodiment, the first bending section 3211 is configured to bend from the straight section 3212 in the direction pointing from the first end 3221 to the second position, so that the first bending section 3211 bends away from the first end 3221 of the second section 322 in the first direction X, and the first bending section 3211 is formed on the side of the straight section 3212 away from the first end 3221 in the first direction X. On the one hand, it can reduce the difficulty of forming the first bending section 3211, which is beneficial to reducing the manufacturing difficulty of the battery 100. On the other hand, it can make the voltage sampling line 32 easier to be further peeled off from other wire harnesses 31 at the weak structure 313 when being pulled by an external force, so as to further reduce the pulling force on the first section 321 of the voltage sampling line 32, and further alleviate the phenomenon that the voltage sampling line 32 of the sampling component 30 breaks or fails to be connected to the busbar component 22 during use.

[0212] In some embodiments, referring to Figure 7 as shown, the straight section 3212 extends along the second direction Y.

[0213] In this embodiment, by setting the straight section 3212 of the first section 321 to extend along the second direction Y, it is convenient for the straight section 3212 to be connected to the busbar component 22 on one side of the second section 322 in the second direction Y, which is beneficial to reducing the assembly difficulty between the straight section 3212 and the busbar component 22, and can optimize the layout between the sampling component 30 and the busbar component 22.

[0214] According to some embodiments of the present application, referring to Figure 5 , and further referring to Figure 9 , Figure 9 is a partial structural schematic diagram of the battery module 20 provided by some embodiments of the present application. The first section 321 is used for electrically connecting to the busbar component 22, and a fuse device 40 is connected to the busbar component 22. One end of the first section 321 away from the second section 322 is connected to the fuse device 40 to electrically connect the first section 321 and the busbar component 22.

[0215] Wherein, the conductor 311 of the first section 321 of the voltage sampling line 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 open the circuit when the battery module 20 or the sampling component 30 has a short circuit, so as to disconnect the electrical connection between the first section 321 of the voltage sampling line 32 and the busbar component 22.

[0216] It should be noted that there are various structures in which the insurance device 40 is connected to the busbar component 22. The insurance device 40 can be disposed on the side of the busbar component 22 facing away from the battery cell 21 in the third direction Z, or on the side of the busbar component 22 facing the battery cell 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.

[0217] Optionally, there are various types of insurance devices 40. For example, plug-in fuses, screw fuses, or enclosed fuses, etc.

[0218] In this embodiment, an insurance 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 insurance device 40, so that when a short circuit occurs in the battery module 20 or the sampling component 30, the insurance device 40 can disconnect the electrical connection between the busbar component 22 and the voltage sampling line 32, thereby enabling the battery module 20 and the sampling component 30 to be open-circuited, alleviating the phenomenon that the battery module 20 or the sampling component 30 is further damaged, and further effectively improving the use stability and service life of the battery 100.

[0219] According to some embodiments of the present application, refer to Figure 5 and Figure 9 , and further refer to Figure 10 , Figure 11 and Figure 12 . Figure 10 FIG. Figure 11 is a schematic structural diagram of the insurance device 40 provided by some embodiments of the present application, Figure 12 FIG.

[0220] is an exploded structural view of the insurance device 40 provided by some embodiments of the present application, is a schematic structural diagram of the conductive layer 41 of the insurance device 40 provided by some embodiments of the present application. Along the third direction Z, the busbar component 22 is disposed on one side of a plurality of battery cells 21, and the insurance device 40 is disposed on the side of the busbar component 22 facing away from the battery cells 21. The insurance 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 stacked and connected along the third direction Z, and the conductive layer 41 is disposed between the first insulating layer 42 and the second insulating layer 43. The conductive layer 41 includes a first conductive region 411, a fuse 412, and a second conductive region 413. The first conductive region 411 and the second conductive region 413 are spaced apart. The first conductive region 411 is connected to the busbar component 22, and the second conductive region 413 is connected to the first section 321. The fuse 412 connects the first conductive region 411 and the second conductive region 413. Along the third direction Z, at least a part of the first insulating layer 42 is located between the second conductive region 413 and the busbar component 22 to insulate and isolate the second conductive region 413 and the busbar component 22.Among them, the busbar component 22 in the battery module 20 functions to electrically connect the electrode terminals 211 of multiple battery cells 21. The material of the busbar component 22 can be various, such as copper, aluminum, or alloy, etc.

[0221] Along the third direction Z, the busbar component 22 is disposed on one side of the multiple battery cells 21, and the fuse device 40 is disposed on the side of the busbar component 22 away from the battery cells 21. That is to say, the busbar component 22 and the fuse device 40 are structured to be stacked along the third direction Z, and the fuse device 40 is disposed on the side of the busbar component 22 away from the battery cells 21 in the third direction Z.

[0222] The first insulating layer 42 and the second insulating layer 43 are stacked and connected along the third direction Z. The first insulating layer 42 and the second insulating layer 43 are structured to be arranged and 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 bonding, 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.

[0223] The conductive layer 41 is disposed between the first insulating layer 42 and the second insulating layer 43. That is to say, the first insulating layer 42 is located between the conductive layer 41 and the busbar component 22 in the third direction Z, while the second insulating layer 43 is located on the side of the conductive layer 41 away from the busbar component 22, such that the first insulating layer 42 and the second insulating layer 43 are structured to clamp the conductive layer 41 with each other.

[0224] Exemplarily, the material of the first insulating layer 42 can be various. For example, the material of the first insulating layer 42 can be rubber, silica gel, or plastic, etc. Similarly, the material of the second insulating layer 43 can also be various. For example, the material of the second insulating layer 43 can be rubber, plastic, or silica gel, etc.

[0225] The conductive layer 41 includes a first conductive region 411, a fuse 412, and a second conductive region 413. The first conductive region 411 and the second conductive region 413 are spaced apart. That is to say, the first conductive region 411 and the second conductive region 413 of the conductive layer 41 are structured to be non - contacting, and the first conductive region 411 and the second conductive region 413 are electrically connected through the fuse 412.

[0226] Among them, the first conductive region 411 is connected to the bus bar component 22. There can be various connection structures between the first conductive region 411 and the bus bar component 22. For example, welding connection, snap connection or abutting connection, etc. Similarly, the second conductive region 413 is connected to the first segment 321. There can also be various connection structures between the second conductive region 413 and the first segment 321. For example, welding connection, snap connection or abutting connection, etc. It should be noted that the conductor 311 of the second conductive region 413 and the first segment 321 are connected to each other to realize the electrical connection between the sampling component 30 and the second conductive region 413.

[0227] Optionally, both ends of the fuse 412 are respectively connected to the first conductive region 411 and the second conductive region 413, and the fuse 412 is configured to be able to be blown when a short circuit occurs in the battery module 20 or the sampling component 30, so as to disconnect the electrical connection between the first segment 321 of the voltage sampling line 32 and the bus bar component 22. The structure of the fuse 412 can be various. The fuse 412, the first conductive region 411 and the second conductive region 413 can be an integrally formed structure. For example, the conductive layer 41 of the fuse device 40 is a composite foil structure or a single-layer foil structure formed of different materials. The conductive layer 41 is formed into the first conductive region 411, the fuse 412 and the second conductive region 413 connected in sequence through an integral forming process, such as stamping or cutting and other integral forming processes. Of course, the fuse 412, the first conductive region 411 and the second conductive region 413 can also be a separately arranged structure. The fuse 412 functions to connect the first conductive region 411 and the second conductive region 413. In this embodiment, the fuse 412 can be made of a metal or alloy with a low melting point. For example, lead, tin, aluminum-magnesium alloy, gold wire or lead-antimony alloy, etc. Similarly, the connection structures between the fuse 412 and the first conductive region 411 and the second conductive region 413 can also be various. For example, welding connection or snap connection, etc.

[0228] At least part of the first insulating layer 42 is located between the second conductive region 413 and the bus bar component 22 to insulate and isolate the second conductive region 413 and the bus bar component 22. That is to say, the first insulating layer 42 and the conductive layer 41 are structures stacked along the third direction Z, and the first insulating layer 42 is located between the bus bar component 22 and the conductive layer 41 in the third direction Z, so that at least part of the first insulating layer 42 is located between the second conductive region 413 of the conductive layer 41 and the bus bar component 22, so that the first insulating layer 42 can separate the second conductive region 413 and the bus bar component 22.

[0229] In this embodiment, the insurance device 40 is provided with a conductive layer 41, a first insulating layer 42 and a second insulating layer 43. The conductive layer 41 includes a first conductive region 411, a fuse 412 and a second conductive region 413 that are connected in sequence. The first conductive region 411 and the second conductive region 413 are respectively connected to the busbar component 22 and the first section 321 of the voltage sampling line 32, so as to enable the voltage sampling line 32 of the sampling assembly 30 to be electrically connected to the busbar component 22 through the conductive layer 41. And when a short circuit occurs in the battery module 20 or the sampling assembly 30, the fuse 412 of the conductive layer 41 can be melted to disconnect the electrical connection between the first conductive region 411 and the second conductive region 413, thereby enabling the battery module 20 and the sampling assembly 30 to be open-circuited. Among them, by arranging the first insulating layer 42 and the second insulating layer 43 in a stacked and connected structure along the third direction Z, the first insulating layer 42 and the second insulating layer 43 can play a role of clamping and assembling the conductive layer 41, and at least part of the first insulating layer 42 is located between the second conductive region 413 and the busbar component 22. With this structure of the battery 100, on the one hand, insulating structures can be formed on both sides of the conductive layer 41 in the third direction Z, which is beneficial to further increasing the creepage distance between the conductive layer 41 and other components, and is beneficial to further reducing the lap phenomenon between the conductive layer 41 and other components, thereby being able to further reduce the risk of internal short circuit occurring during the use of the battery 100 to improve the use reliability of the battery 100. On the other hand, the first insulating layer 42 and the second insulating layer 43 can play a certain stabilizing role on the conductive layer 41, which is beneficial to further improving the assembly stability of the insurance device 40 arranged on the busbar component 22, and thus can effectively improve the use stability and service life of the battery 100.

[0230] According to some embodiments of the present application, referring to Figure 5 and Figure 9 As shown, along the third direction Z, the projection of the insurance device 40 is located within the busbar component 22. That is to say, the busbar component 22 covers the insurance device 40 in the third direction Z.

[0231] In this embodiment, by setting the projection of the insurance device 40 in the third direction Z to be entirely located within the busbar component 22, on the one hand, the assembly stability of the insurance device 40 arranged on the busbar component 22 can be improved to reduce the risk of the insurance device 40 falling off, and the collision phenomenon between the insurance device 40 and other components can be alleviated. On the other hand, the lap phenomenon between the conductive layer 41 of the insurance device 40 and other components can be reduced to reduce the risk of internal short circuit occurring during the use of the battery 100, which is beneficial to improving the use reliability of the battery 100.

[0232] According to some embodiments of the present application, referring to Figure 10 , Figure 11 andFigure 12 As shown, a gap 414 is formed between the first conductive region 411 and the second conductive region 413. Along the third direction Z, the regions of the first insulating layer 42 and the second insulating layer 43 corresponding to the gap 414 are connected to each other to separate the first conductive region 411 and the second conductive region 413.

[0233] Among them, the gap 414 formed between the first conductive region 411 and the second conductive region 413 is an interval region between the first conductive region 411 and the second conductive region 413.

[0234] Along the third direction Z, the regions of the first insulating layer 42 and the second insulating layer 43 corresponding to the gap 414 are connected to each other to separate the first conductive region 411 and the second conductive region 413. That is to say, the region where the projection of the first insulating layer 42 in the third direction Z is located within the gap 414 is connected to the part where the projection of the second insulating layer 43 in the third direction Z is located within the gap 414, so as to form a first connecting portion located within the space of the gap 414, and the first connecting portion can separate the first conductive region 411 and the second conductive region 413.

[0235] In this embodiment, by connecting the portions of the first insulating layer 42 and the second insulating layer 43 corresponding to the gap 414 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 can also play an insulating and isolating role for the first conductive layer 41 and the second conductive layer 41, so that the physical separation between the first conductive region 411 and the second conductive region 413 can be realized, and the creepage distance between the first conductive region 411 and the second conductive region 413 can be increased. Furthermore, the phenomenon of mis-lapping between the first conductive region 411 and the second conductive region 413 can be alleviated, which is beneficial to reducing the risk of failure of the fuse device 40.

[0236] According to some embodiments of the present application, referring to Figure 10 and Figure 11 As shown, the edge regions of the first insulating layer 42 and the edge regions 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 an accommodation space, and the conductive layer 41 is accommodated in the accommodation space.

[0237] Among them, the edge regions of the first insulating layer 42 and the edge regions of the second insulating layer 43 are connected to each other. That is to say, the regions of the first insulating layer 42 close to the outer edge and the regions of the second insulating layer 43 close to the outer edge are connected to each other to form a second connecting portion with an annular structure.

[0238] The first insulating layer 42 and the second insulating layer 43 jointly define an accommodation space, and the conductive layer 41 is accommodated in the accommodation space. That is, the second connecting portion formed by the 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 to say, 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 regions of the first insulating layer 42 and the second insulating layer 43 are connected to each other to form a housing member for housing the conductive layer 41.

[0239] In this embodiment, by connecting the edge regions of the first insulating layer 42 and the second insulating layer 43, the first insulating layer 42 and the second insulating layer 43 can jointly form an accommodation space for accommodating the conductive layer 41. On the one hand, this structure of the battery 100 can further reduce the overlapping phenomenon between the conductive layer 41 and other components, thereby further reducing the risk of internal short circuit during the use of the battery 100 to improve the use reliability of the battery 100. On the other hand, it further improves the stabilizing effect of the first insulating layer 42 and the second insulating layer 43 on the conductive layer 41, which is beneficial to improving the structural stability of the fuse device 40, and can further improve the assembly stability of the fuse device 40 provided on the bus bar member 22.

[0240] According to some embodiments of the present application, referring to Figure 11 and Figure 12 , and further referring to Figure 13 , Figure 13 FIG. 14 is a front view of the fuse device 40 provided in some embodiments of the present application facing the first insulating layer 42 in the third direction Z. The first insulating layer 42 is provided with a first window 421, and the first window 421 is configured to expose a part of the first conductive region 411, and the exposed part of the first conductive region 411 is connected to the bus bar member 22.

[0241] Among them, the first window 421 is a through-hole structure provided on the first insulating layer 42, and the first window 421 penetrates through the two side surfaces of the first insulating layer 42 along the third direction Z.

[0242] The first window 421 is configured to expose a part of the first conductive region 411, and the exposed part of the first conductive region 411 is connected to the bus bar member 22. That is to say, a part of the projection of the first conductive region 411 in the third direction Z is located within the first window 421, and the region of the first conductive region 411 corresponding to the first window 421 in the third direction Z is connected to the bus bar member 22.

[0243] In this embodiment, a first window 421 is provided on the first insulating layer 42, and the first window 421 can expose a part of the first conductive region 411 of the conductive layer 41 in the third direction Z, so as to facilitate the connection between the bus bar component 22 and the exposed area of the first conductive region 411, which is beneficial to reducing the connection difficulty between the bus bar component 22 and the first conductive region 411, and can improve the connection quality between the bus bar component 22 and the first conductive region 411.

[0244] In some embodiments, as shown in Figure 13 and referring to the figure, along the third direction Z, the projection of the first window 421 is located within the first conductive region 411. That is to say, the projection of the first window 421 in the third direction Z is located within the edge of the first conductive region 411. Conversely, the first conductive region 411 covers the first window 421 in the third direction Z.

[0245] In this embodiment, by setting the projection of the first window 421 in the third direction Z to be entirely located within the first conductive region 411, on the one hand, it can alleviate the phenomenon that the exposed area of the first conductive region 411 is too large, so as to reduce the lapping risk between the first conductive region 411 and other components. On the other hand, it can alleviate the phenomenon that the edge of the first conductive region 411 is exposed, which is beneficial to improving the stability of the first conductive region 411 assembled between the first insulating layer 42 and the second insulating layer 43, and thus can reduce the risk of the first conductive region 411 falling off from the first window 421.

[0246] According to some embodiments of the present application, referring to Figure 11 、 Figure 12 and Figure 13 , and further referring to Figure 14 , Figure 14 is a front view of the insurance device 40 provided by some embodiments of the present application facing the second insulating layer 43 in the third direction Z. The first conductive region 411 is welded to the bus bar 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 region 411. The projections of the second window 431 and the first window 421 in the third direction Z coincide with each other.

[0247] Among them, the second window 431 is a through-hole structure provided on the second insulating layer 43, and the second window 431 penetrates through the two side surfaces of the second insulating layer 43 along the third direction Z.

[0248] The second window 431 is configured to expose a part of the first conductive region 411. That is to say, a part of the projection of the first conductive region 411 in the third direction Z is located within the second window 431.

[0249] The projections of the second window 431 and the first window 421 in the third direction Z coincide with each other. That is to say, the shapes and sizes of the first window 421 and the second window 431 are the same, and their positions in the third direction Z are also the same. That is, the part of the first conductive region 411 projected in the third direction Z that is located within the first window 421 is also located within the second window 431. Of course, in other embodiments, the second window 431 and the first window 421 may also be structures where at least part of their projections in the third direction Z overlap. That is to say, part of the projection of the first conductive region 411 in the third direction Z is located within both the first window 421 and the second window 431, such that the part of the projection of the first conductive region 411 in the third direction Z that is located within both the first window 421 and the second window 431 is welded to the bus bar component 22.

[0250] In this embodiment, by providing the second window 431 on the second insulating layer 43 that can expose part of the first conductive region 411, and the second window 431 and the first window 421 are structures where their projections in the third direction Z coincide, it is possible to weld the first conductive region 411 and the bus bar component 22 from the side of the first conductive region 411 facing away from the bus bar component 22 and corresponding to the position of the second window 431. Moreover, when welding the first conductive region 411 and the bus bar component 22, there is no need to position the overlapping region of the second window 431 and the first window 421 in the third direction Z. On the one hand, this can reduce the difficulty of welding and assembling the first conductive region 411 and the bus bar component 22, thereby improving the assembly efficiency of the battery 100. On the other hand, it can be achieved that when welding the first conductive region 411 and the bus bar component 22, there is no need to penetrate the second insulating layer 43, which is beneficial to reducing the welding power required for welding the first conductive region 411 and the bus bar component 22, and can effectively improve the welding quality between the first conductive region 411 and the bus bar component 22.

[0251] According to some embodiments of the present application, referring to Figure 10 、 Figure 11 and Figure 14 as shown, the second insulating layer 43 is provided with a third window 432, and the third window 432 is configured to expose part of the second conductive region 413, and the exposed part of the second conductive region 413 is connected to the first segment 321.

[0252] Among them, the third window 432 is a through-hole structure provided on the second insulating layer 43, and the third window 432 penetrates the two side surfaces of the second insulating layer 43 along the third direction Z.

[0253] The third window 432 is configured to expose a portion of the second conductive region 413. The exposed portion of the second conductive region 413 is connected to the first segment 321. That is to say, a portion of the projection of the second conductive region 413 in the third direction Z is located within the third window 432, and the region of the second conductive region 413 corresponding to the third window 432 in the third direction Z is interconnected with the conductor 311 of the first segment 321.

[0254] In this embodiment, a third window 432 is provided on the second insulating layer 43, and the third window 432 can expose a part of the second conductive region 413 of the conductive layer 41 in the third direction Z, thereby facilitating the interconnection between the first segment 321 of the voltage sampling line 32 and the exposed region of the second conductive region 413, which is beneficial to reducing the connection difficulty between the first segment 321 of the voltage sampling line 32 and the second conductive region 413, and can improve the connection quality between the first segment 321 of the voltage sampling line 32 and the second conductive region 413.

[0255] In some embodiments, referring to Figure 14 As shown, along the third direction Z, the projection of the third window 432 is located within the second conductive region 413. That is to say, the projection of the third window 432 in the third direction Z is located within the edge of the second conductive region 413. Conversely, the second conductive region 413 covers the third window 432 in the third direction Z.

[0256] In this embodiment, by setting the projection of the third window 432 in the third direction Z to be entirely located within the second conductive region 413, on the one hand, it can alleviate the phenomenon that the exposed region of the second conductive region 413 is too large, so as to reduce the lapping risk between the second conductive region 413 and other components. On the other hand, it can alleviate the phenomenon that the edge of the second conductive region 413 is exposed, which is beneficial to improving the stability of the second conductive region 413 assembled 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.

[0257] According to some embodiments of the present application, the first insulating layer 42 and the second insulating layer 43 are thermally compounded and connected. That is to say, the first insulating layer 42 and the second insulating layer 43 are interconnected by a hot pressing process.

[0258] Of course, in other embodiments, the first insulating layer 42 and the second insulating layer 43 can also be adhesively bonded to each other by double-sided tape or glue, etc.

[0259] In this embodiment, a thermocompound connection structure is adopted to connect the first insulating layer 42 and the second insulating layer 43. On the one hand, it can improve the connection reliability between the first insulating layer 42 and the second insulating layer 43, so as to enhance the structural stability and reliability of the conductive layer 41 disposed between the first insulating layer 42 and the second insulating layer 43. On the other hand, it can reduce the assembly difficulty of the first insulating layer 42 and the second insulating layer 43, so as to improve the assembly efficiency of the fuse device 40.

[0260] According to some embodiments of the present application, referring to Figure 5 , Figure 9 , Figure 10 and Figure 11 as shown, the first conductive region 411 is welded to the busbar component 22, and the second conductive region 413 is welded to the conductor 311 of the first segment 321.

[0261] Exemplarily, the first conductive region 411 and the busbar component 22 are connected by laser welding, and the second conductive region 413 and the conductor 311 of the first segment 321 are connected by soldering.

[0262] In this embodiment, by setting the first conductive region 411 and the busbar component 22 to a structure of being welded to each other, it is beneficial to improve the connection reliability between the first conductive region 411 and the busbar component 22, so as to reduce the risk of the fuse device 40 failing due to the separation of the first conductive region 411 and the busbar component 22 from each other, and it is also beneficial to improve the overcurrent capacity between the first conductive region 411 and the busbar component 22. Similarly, by setting the second conductive region 413 and the conductor 311 of the first segment 321 to a structure of being welded to each other, it is beneficial to improve the connection reliability between the second conductive region 413 and the first segment 321 of the voltage sampling line 32, so as to reduce the risk of the fuse device 40 failing due to the separation of the second conductive region 413 and the first segment 321 of the voltage sampling line 32 from each other, and it is also beneficial to improve the overcurrent capacity between the second conductive region 413 and the first segment 321 of the voltage sampling line 32.

[0263] According to some embodiments of the present application, referring to Figure 12 , and further referring to Figure 15 , Figure 15A cross-sectional view perpendicular to the first direction X of the conductive layer 41 of the insurance device 40 provided by some embodiments of the present application. The conductive layer 41 includes a first foil 415 and a second foil 416 that are compound-connected along 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 part of the first foil 415 located in the first conductive region 411 is welded to the busbar component 22, and the part of the second foil 416 located in the second conductive region 413 is welded to the conductor 311 of the first section 321. 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.

[0264] Among them, the conductive layer 41 includes a first foil 415 and a second foil 416 that are compound-connected along the third direction Z. That is to say, 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.

[0265] It should be noted that in this embodiment, the first conductive region 411, the fuse 412, and the second conductive region 413 are structures formed by an integral molding process of the conductive layer 41 of the composite foil structure. For example, the conductive layer 41 formed by the composite foil forms the first conductive region 411, the fuse 412, and the second conductive region 413 that are connected in sequence through an integral molding process such as stamping or cutting, so that the first conductive region 411, the fuse 412, and the second conductive region 413 all include the first foil 415 and the second foil 416 that are compound-connected along the third direction Z.

[0266] 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 to say, the first foil 415 and the second foil 416 of the conductive layer 41 are structures stacked along the third direction Z, and the first foil 415 is located on the side of the second foil 416 facing the busbar component 22.

[0267] The part of the first foil 415 located in the first conductive region 411 is welded to the busbar component 22. That is to say, the first foil 415 in the first conductive region 411 is welded to the busbar component 22. Similarly, the part of the second foil 416 located in the second conductive region 413 is welded to the conductor 311 of the first section 321. That is to say, the second foil 416 in the second conductive region 413 is welded to the conductor 311 of the first section 321.

[0268] It should be noted that the same material of the first foil 415 and the bus bar component 22 means that the main components of the first foil 415 and the bus bar component 22 are the same. For example, if both the first foil 415 and the bus bar component 22 are of a single material, such as copper or aluminum, then the first foil 415 and the bus bar component 22 are both composed of the same metal elements; if the first foil 415 and the bus bar component 22 are of alloy material or mixed material, such as aluminum alloy or steel, etc., then the same material of the first foil 415 and the bus bar component 22 means that the main components of the first foil 415 and the bus bar component 22 are the same. If the first foil 415 and the bus bar component 22 only differ in the content of components, they are still of the same material. Similarly, the same material of the second foil 416 and the conductor 311 of the first section 321 means that the main components of the second foil 416 and the conductor 311 of the first section 321 are the same. For example, if both the second foil 416 and the conductor 311 of the first section 321 are of a single material, such as copper or aluminum, then the second foil 416 and the conductor 311 of the first section 321 are both composed of the same metal elements; if the second foil 416 and the conductor 311 of the first section 321 are of alloy material or mixed material, such as aluminum alloy or steel, etc., then the same material of the second foil 416 and the conductor 311 of the first section 321 means that the main components of the second foil 416 and the conductor 311 of the first section 321 are the same. If the second foil 416 and the conductor 311 of the first section 321 only differ in the content of components, they are still of the same material. On the contrary, the different materials of the bus bar component 22 and the conductor 311 of the first section 321 mean that the main components of the bus bar component 22 and the conductor 311 of the first section 321 are different. For example, if both the bus bar component 22 and the conductor 311 of the first section 321 are of a single material, such as copper or aluminum, then the bus bar component 22 and the conductor 311 of the first section 321 are both composed of different metal elements; if the bus bar component 22 and the conductor 311 of the first section 321 are of alloy material or mixed material, such as aluminum alloy or steel, etc., then the different materials of the bus bar component 22 and the conductor 311 of the first section 321 mean that the main components of the bus bar component 22 and the conductor 311 of the first section 321 are different.

[0269] Exemplarily, the materials of both the bus bar component 22 and the first foil 415 are aluminum. Of course, in other embodiments, the materials of the bus bar component 22 and the first foil 415 can also be both copper or alloy, etc.

[0270] Exemplarily, the materials of both the conductor 311 of the first section 321 and the second foil 416 are copper. Of course, in other embodiments, the materials of the conductor 311 of the first section 321 and the second foil 416 can also be both aluminum or alloy, etc.

[0271] In this embodiment, the conductive layer 41 is provided with a first foil 415 and a second foil 416 that are connected in a composite manner along the third direction Z. The first foil 415 is located on the side of the second foil 416 facing the current collecting component 22 in the third direction Z. By setting the material of the first foil 415 to be the same as that of the current collecting component 22, and welding the part of the first foil 415 located in the first conductive region 411 to the current collecting component 22. 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 welding the part of the second foil 416 located in the second conductive region 413 to the conductor 311 of the first section 321, a structure in which the first conductive region 411 and the current collecting component 22 are welded with the same material is realized, and a structure in which the second conductive region 413 and the conductor 311 of the first section 321 are welded with the same material can be realized. On the one hand, the welding difficulty between the first conductive region 411 and the current collecting component 22 and between the second conductive region 413 and the conductor 311 of the first section 321 can be reduced. On the other hand, the quality problems caused by welding different materials to each other can be alleviated, which is beneficial to improving the welding quality between the first conductive region 411 and the current collecting component 22 and between the second conductive region 413 and the conductor 311 of the first section 321.

[0272] Of course, in other embodiments, the fuse device 40 can also be other structures. For example, the conductive layer 41, the current collecting component 22, and the conductor 311 of the first section 321 are all made of the same material. That is to say, the first conductive region 411, the fuse 412, and the second conductive region 413 of the conductive layer 41, the current collecting component 22, and the conductor 311 of the first section 321 are all structures formed of the same material.

[0273] Exemplarily, the conductive layer 41, the current collecting component 22, and the conductor 311 of the first section 321 can all be made of copper or aluminum, etc.

[0274] It should be noted that in this embodiment, the first conductive region 411, the fuse 412, and the second conductive region 413 of the conductive layer 41 can be a structure integrally formed by a single foil or a split structure. The connection structure between the fuse 412 and the first conductive region 411 and the second conductive region 413 can be various, such as welding connection or snap connection, etc.

[0275] In this embodiment, by setting the conductive layer 41 of the insurance device 40, the current collecting component 22, and the conductor 311 of the first section 321 to be of the same material structure, a structure in which the first conductive region 411 and the current collecting component 22, and the second conductive region 413 and the conductor 311 of the first section 321 are welded together with the same material is achieved. On the one hand, the welding difficulty between the first conductive region 411 and the current collecting component 22, and the second conductive region 413 and the conductor 311 of the first section 321 can be reduced. On the other hand, the quality problems caused by welding different materials together can be alleviated, which is beneficial to improving the welding quality between the first conductive region 411 and the current collecting component 22, and the second conductive region 413 and the conductor 311 of the first section 321.

[0276] It should be noted that the structure of the insurance device 40 is not limited to this. In some embodiments, the insurance device 40 can also be other structures. For example, the material of the current collecting component 22 is different from the material of the conductor 311 of the first section 321, the material of the first conductive region 411 is the same as the material of the current collecting component 22, and the material of the second conductive region 413 is the same as the material of the conductor 311 of the first section 321.

[0277] Among them, the first conductive region 411, the fuse 412, and the second conductive region 413 of the conductive layer 41 are separately arranged structures. The fuse 412 connects the first conductive region 411 and the second conductive region 413. The first conductive region 411 is a structure with the same material as the current collecting component 22, and the second conductive region 413 is a structure with the same material as the conductor 311 of the first section 321. In this embodiment, the fuse 412 can be of the same material as the first conductive region 411, or of the same material as the second conductive region 413, or a structure with a material different from both the first conductive region 411 and the second conductive region 413.

[0278] In this embodiment, by setting the material of the first conductive region 411 of the conductive layer 41 to be the same as the material of the current collecting component 22, and setting the material of the second conductive region 413 of the conductive layer 41 to be the same as the material of the conductor 311 of the first section 321, a structure in which the first conductive region 411 and the current collecting component 22 are welded together with the same material is achieved, and a structure in which the second conductive region 413 and the conductor 311 of the first section 321 are welded together with the same material can be achieved. On the one hand, the welding difficulty between the first conductive region 411 and the current collecting component 22, and the second conductive region 413 and the conductor 311 of the first section 321 can be reduced. On the other hand, the quality problems caused by welding different materials together can be alleviated, which is beneficial to improving the welding quality between the first conductive region 411 and the current collecting component 22, and the second conductive region 413 and the conductor 311 of the first section 321.

[0279] According to some embodiments of the present application, see Figure 11 andFigure 12 As shown, the first conductive region 411 includes a first portion 4111, a second portion 4112, and a third portion 4113 that are connected in sequence. The first portion 4111 and the third portion 4113 are disposed opposite to each other along the first direction X.

[0280] Wherein, the first conductive region 411 includes a first portion 4111, a second portion 4112, and a third portion 4113 that are connected in sequence. That is to say, 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.

[0281] Exemplarily, the second portion 4112 extends along the first direction X. The two ends of the second portion 4112 in the first direction X are respectively connected to the first portion 4111 and the third portion 4113, and both the first portion 4111 and the third portion 4113 extend along the second direction Y.

[0282] Exemplarily, in Figure 12 the first portion 4111, the second portion 4112, and the third portion 4113 of the first conductive region 411 are of an integrally formed structure. Of course, in other embodiments, the first portion 4111, the second portion 4112, and the third portion 4113 may also be of a separately disposed structure.

[0283] It should be noted that in the embodiment where the first insulating layer 42 is provided with a first window 421 and the second insulating layer 43 is provided with a second window 431, the first window 421 is also a "C"-shaped structure having the same shape as the first conductive region 411. Similarly, the second window 431 is also a "C"-shaped structure having the same shape as the first conductive region 411, so as to improve the welding area between the first conductive region 411 and the bus bar member 22.

[0284] In this embodiment, by setting the first conductive region 411 as the first portion 4111, the second portion 4112, and the third portion 4113 that are connected in sequence, and the first portion 4111 and the third portion 4113 are disposed opposite to each other along the first direction X to form a first conductive region 411 in a shape similar to a "C" shape, the fuse device 40 adopting this structure can increase the effective welding area between the first conductive region 411 of the conductive layer 41 and the bus bar member 22, and can further improve the assembly stability of the fuse device 40 disposed on the bus bar member 22.

[0285] In some embodiments, as shown in Figure 12 along the first direction X, the second conductive region 413 is located between the first portion 4111 and the third portion 4113. The two ends of the fuse 412 are respectively connected to the second conductive region 413 and the third portion 4113.

[0286] Among them, the second conductive region 413 is located between the first part 4111 and the third part 4113 in the first direction X, and the second conductive region 413 is spaced apart from the first part 4111, the second part 4112, and the third part 4113.

[0287] In this embodiment, by arranging the second conductive region 413 of the conductive layer 41 to be located between the first part 4111 and the third part 4113 in the first direction X, so that the second conductive region 413 is a structure located inside the first conductive region 411. On the one hand, the fuse device 40 adopting this structure can optimize the space occupied by the conductive layer 41 and improve the overall structural strength of the fuse device 40. On the other hand, it can reduce the difficulty of connecting the fuse 412 to the first conductive region 411 and the second conductive region 413, so as to reduce the manufacturing difficulty of the conductive layer 41.

[0288] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 and Figure 5 As shown, a plurality of battery cells 21 are stacked along the first direction X. The battery module 20 includes a plurality of bus components 22. The plurality of bus components 22 are spaced apart along the first direction X, and each bus component 22 is electrically connected to two adjacent battery cells 21. There are a plurality of voltage sampling lines 32. The second segments 322 of the plurality of voltage sampling lines 32 all extend along the first direction X, and the first segments 321 of the plurality of voltage sampling lines 32 are spaced apart along the first direction X. Each first segment 321 is used to be electrically connected to a bus component 22.

[0289] Among them, the voltage sampling lines 32 in the plurality of wire harnesses 31 of the sampling component 30 are a plurality, and each voltage sampling line 32 is a structure formed with a mutually connected first segment 321 and a second segment 322, so that the second segments 322 of the plurality of voltage sampling lines 32 located inside the wire harness main body 34 are all structures extending along the first direction X.

[0290] The first segments 321 of the plurality of voltage sampling lines 32 are spaced apart along the first direction X, that is, the plurality of first segments 321 stripped from the plurality of voltage sampling lines 32 are structures arranged at intervals and not in contact with each other in the first direction X.

[0291] In this embodiment, the battery module 20 includes a plurality of busbar components 22, which 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 to a busbar component 22, so that one sampling assembly 30 can sample and obtain the voltages of the multiple busbar components 22 of the battery module 20 to achieve multi-point sampling of the battery module 20 and improve the usage reliability of the battery 100. Among them, by arranging the first sections 321 of the multiple voltage sampling lines 32 in a structure arranged at intervals along the first direction X, on the one hand, it is convenient for the first sections 321 of the multiple voltage sampling lines 32 to be respectively connected to the multiple busbar components 22, and on the other hand, it can reduce the interference phenomenon between the first sections 321 of the multiple voltage sampling lines 32 and can reduce the short-circuit risk between the first sections 321 of the multiple voltage sampling lines 32.

[0292] In some embodiments, referring to Figure 3 and Figure 4 As shown, 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.

[0293] Among them, 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. That is to say, each battery module 20 is correspondingly provided with two rows of busbar components 22 arranged at intervals along the second direction Y, and each row of busbar components 22 includes a plurality of busbar components 22 arranged at intervals along the first direction X to achieve the series connection between the multiple battery cells 21 in the battery module 20.

[0294] The second section 322 is located between the two rows of busbar components 22. That is to say, the wire harness main body 34 of the sampling assembly 30 is arranged between the two rows of busbar components 22 in the second direction Y, and the first sections 321 of the voltage sampling lines 32 are peeled off on both sides of the wire harness main body 34 of the sampling assembly 30 in the second direction Y, so that each first section 321 can be electrically connected to a busbar component 22.

[0295] In this 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 multiple voltage sampling lines 32 of the sampling assembly 30 are arranged between the two rows of busbar components 22 in the second direction Y to reduce the assembly difficulty between the sampling assembly 30 and the two rows of busbar components 22 and can optimize the layout between the multiple wire harnesses 31 of the sampling assembly 30 and the two rows of busbar components 22.

[0296] According to some embodiments of the present application, referring toFigure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown in Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , the sampling assembly 30 may further include a temperature detector 35. The temperature detector 35 is disposed at the sampling point, and is configured to detect the temperature of the bus bar component 22 or the battery cell 21. The plurality of wire harnesses 31 includes at least one temperature sampling wire group 36. The temperature sampling wire group 36 includes two temperature sampling wires 361 with opposite polarities. The first wire harness segment 314 of the temperature sampling wire 361 is the third segment 3611, and the second wire harness segment 315 of the temperature sampling wire 361 is the fourth segment 3612. The third segment 3611 is electrically connected to the temperature detector 35, and one end of the fourth segment 3612 away from the third segment 3611 is used for electrical connection to the battery management system.

[0297] Wherein, the temperature detector 35 is disposed on the bus bar component 22, that is, the sampling point for the temperature sampling wire 361 to connect is disposed on the bus bar component 22. The temperature detector 35 is configured to detect the temperature of the bus bar component 22 or the battery cell 21. That is to say, the temperature detector 35 is installed on the bus bar component 22 and functions to obtain the temperature of the bus bar component 22 or the battery cell 21. The temperature detector 35 is a temperature sensor, for example, a thermistor, etc. The specific structure of the temperature sensor can refer to the related art and will not be elaborated herein.

[0298] Optionally, the structure in which the temperature detector 35 is disposed on the bus bar component 22 may be various. For example, the temperature detector 35 may be connected to the bus bar component 22 through structures such as bolt screwing, clamping or bonding.

[0299] The plurality of wire harnesses 31 includes at least one temperature sampling wire group 36. The temperature sampling wire group 36 includes two temperature sampling wires 361 with opposite polarities. That is to say, the plurality of wire harnesses 31 includes two grouped temperature sampling wires 361, and each temperature detector 35 is electrically connected to 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 to the positive and negative electrodes of the temperature detector 35.

[0300] The first wire harness segment 314 of the temperature sampling wire 361 is the third segment 3611, and the second wire harness segment 315 of the temperature sampling wire 361 is the fourth segment 3612. That is to say, among the multiple wire harnesses 31 of the sampling assembly 30, there is a temperature sampling wire 361 for electrically connecting to the temperature detector 35 at the sampling point, so that the temperature sampling wires 361 in the multiple wire harnesses 31 can collect and obtain the temperature information of the battery cell 21 or the busbar component 22. And the part of the temperature sampling wire 361 for electrically connecting to the temperature detector 35 is the first wire harness segment 314 of the wire harness 31, that is, the third segment 3611 of the temperature sampling wire 361, while the part of the temperature sampling wire 361 for electrically connecting to 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 wire 361.

[0301] One end of the third segment 3611 far from the fourth segment 3612 is electrically connected to the temperature detector 35, and one end of the fourth segment 3612 far from the third segment 3611 is for electrically connecting to the battery management system. That is to say, both ends of the wire harness 31 for obtaining the temperature information of the battery module 20 are electrically connected to the temperature detector 35 and the battery management system respectively. That is to say, the stripped part of the temperature sampling wire 361 is for electrically connecting to the temperature detector 35, while the non-stripped part of the temperature sampling wire 361 is for electrically connecting to the battery management system of the battery 100.

[0302] It should be noted that the electrical connection between the third segment 3611 and the temperature detector 35 is the electrical connection between the conductor 311 of the third segment 3611 and the temperature detector 35. Similarly, the electrical connection between the third segment 3611 and the battery management system is the electrical connection between the conductor 311 of the third segment 3611 and the battery management system.

[0303] In this embodiment, the sampling assembly 30 is further provided with a temperature detector 35. The temperature detector 35 is electrically connected to two temperature sampling wires 361 in the temperature sampling wire group 36, and the temperature detector 35 is arranged at the sampling point, so that the sampling assembly 30 can also obtain the temperature of the battery cell 21 or the busbar component 22 in the battery module 20 during use.

[0304] According to some embodiments of the present application, referring to Figure 7 and Figure 8 As shown, the insulating sheaths 312 of the fourth segments 3612 of the two temperature sampling wires 361 in the temperature sampling wire group 36 are adjacent and connected. That is to say, the insulating sheaths 312 of the parts of the two temperature sampling wires 361 in the temperature sampling wire group 36 located in the wire harness main body 34 are of an adjacent and connected structure, and a weak structure 313 is formed between the insulating sheaths 312 of the parts of the two temperature sampling wires 361 in the temperature sampling wire group 36 located in the wire harness main body 34.

[0305] In this embodiment, by setting the insulating sheaths 312 of the fourth segments 3612 of two temperature sampling lines 361 in the same temperature sampling line group 36 to be adjacent and connected, on the one hand, it is convenient to strip the two temperature sampling lines 361 from other wire harnesses 31 simultaneously and then strip the two temperature sampling lines 361 from each other, thereby reducing the forming difficulty of the third segments 3611 of the two temperature sampling lines 361. On the other hand, it can alleviate the phenomenon that the third segments 3611 of the two temperature sampling lines 361 in the same temperature sampling line group 36 are too far apart, so as to reduce the connection difficulty between the third segments 3611 of the two temperature sampling lines 361 and the temperature detection element 35.

[0306] In some embodiments, referring to Figure 7 As shown, the third segments 3611 of two temperature sampling lines 361 in the temperature sampling line group 36 are spaced apart. That is, the third segments 3611 of two temperature sampling lines 361 in the temperature sampling line group 36 do not contact each other.

[0307] Exemplarily, the third segments 3611 of two temperature sampling lines 361 in the temperature sampling line group 36 are spaced apart along the first direction X.

[0308] In this embodiment, by setting the third segments 3611 of two temperature sampling lines 361 in the same temperature sampling line group 36 to be arranged in a spaced manner, the interference phenomenon between the third segments 3611 of the two temperature sampling lines 361 can be alleviated, and the short - circuit risk between the third segments 3611 of the two temperature sampling lines 361 can be reduced.

[0309] According to some embodiments of the present application, please refer to Figure 7 As shown, the temperature detection element 35 has a positive - pole connecting wire 351 and a negative - pole connecting wire 352. The positive - pole connecting wire 351 and the negative - pole connecting wire 352 are respectively connected to the third segments 3611 of two temperature sampling lines 361 in the temperature sampling line group 36 to electrically connect the temperature detection element 35 and the two temperature sampling lines 361 in the temperature sampling line group 36.

[0310] Among them, the temperature detection element 35 has a positive - pole connecting wire 351 and a negative - pole connecting wire 352. That is, the positive - pole connecting wire 351 and the negative - pole connecting wire 352 are respectively the positive and negative poles of the temperature detection element 35, and the positive - pole connecting wire 351 and the negative - pole connecting wire 352 are respectively connected to the third segments 3611 of two temperature sampling lines 361 in the same temperature sampling line group 36.

[0311] It should be noted that the positive connection line 351 and the negative connection line 352 are respectively connected to the third section 3611 of two temperature sampling lines 361 in the temperature sampling line group 36, that is, the metal parts of the positive connection line 351 and the negative connection line 352 are respectively connected to the conductors 311 of the third section 3611 of two temperature sampling lines 361 in the temperature sampling line group 36.

[0312] In this embodiment, the temperature detection member 35 is provided with a positive connection line 351 and a negative connection line 352, and the positive connection line 351 and the negative connection line 352 are respectively connected to the third section 3611 of two temperature sampling lines 361 in the temperature sampling line group 36, so as to realize the electrical connection between the temperature detection member 35 and two temperature sampling lines 361 in the temperature sampling line group 36. The sampling assembly 30 with this structure can reduce the assembly difficulty between the temperature detection member 35 and the temperature sampling line 361, which is beneficial to improving the assembly efficiency of the sampling assembly 30.

[0313] In some embodiments, please continue to refer to Figure 7 As shown, at least one of the positive connection line 351 and the third section 3611 connected thereto forms a second bending section 3511.

[0314] Exemplarily, a part of the positive connection line 351 is bent to form a second bending section 3511, and a plurality of second bending sections 3511 are formed on the positive connection line 351. Of course, in other embodiments, the third section 3611 of the temperature sampling line 361 connected to the positive connection line 351 can also be bent to form a second bending section 3511.

[0315] In this embodiment, by forming the second bending section 3511 on at least one of the positive connection line 351 and the third section 3611 connected thereto, so that at least one of the positive connection line 351 and the third section 3611 connected thereto forms a bent structure, the second bending section 3511 can play a certain buffering role when the positive connection line 351 and the third section 3611 connected thereto are pulled, and the second bending section 3511 can absorb and adapt to the displacement generated by the sampling point relative to the sampling assembly 30 in multiple directions. Furthermore, the pulling force on the positive connection line 351 and the third section 3611 of the temperature sampling line 361 connected thereto during use can be further reduced, so as to reduce the risk of damage or failure of the sampling assembly 30 during use.

[0316] In some embodiments, please continue to refer to Figure 7 As shown, at least one of the negative connection line 352 and the third section 3611 connected thereto forms a third bending section 3521.

[0317] Exemplarily, a portion of the negative electrode connection line 352 is bent to form a third bending section 3521, and a plurality of third bending sections 3521 are formed on the negative electrode connection line 352. Of course, in other embodiments, the third section 3611 of the temperature sampling line 361 connected to the negative electrode connection line 352 may also be bent to form the third bending section 3521.

[0318] In this embodiment, by forming the third bending section 3521 on at least one of the negative electrode connection line 352 and the third section 3611 connected thereto, at least one of the negative electrode connection line 352 and the third section 3611 connected thereto forms a bent structure, so that the third bending section 3521 can play a certain buffering role when the negative electrode connection line 352 and the third section 3611 connected thereto are pulled, and the third bending section 3521 can absorb and adapt to the displacement generated by the sampling point relative to the sampling assembly 30 in multiple directions. Furthermore, the pulling force on the negative electrode connection line 352 and the third section 3611 of the temperature sampling line 361 connected thereto during use can be further reduced, so as to reduce the risk of damage or failure of the sampling assembly 30 during use.

[0319] According to some embodiments of the present application, please refer to Figure 7 As shown, the connection positions of the positive electrode connection line 351 and the corresponding third section 3611 are spaced from the connection positions of the negative electrode connection line 352 and the corresponding third section 3611.

[0320] Exemplarily, the connection positions of the positive electrode connection line 351 and the corresponding third section 3611 are spaced from the connection positions of the negative electrode connection line 352 and the corresponding third section 3611 along the first direction X.

[0321] It should be noted that the connection positions of the positive electrode connection line 351 and the corresponding third section 3611 being spaced from the connection positions of the negative electrode connection line 352 and the corresponding third section 3611 means that the connection positions of the metal part of the positive electrode connection line 351 and the conductor 311 of the corresponding third section 3611 are spaced from the connection positions of the metal part of the negative electrode connection line 352 and the conductor 311 of the corresponding third section 3611.

[0322] In this embodiment, by setting the connection positions of the positive electrode connection line 351 and the corresponding third section 3611 and the connection positions of the negative electrode connection line 352 and the corresponding third section 3611 to be spaced from each other, the interference effect between them can be reduced, which is beneficial to reducing the connection difficulty between the positive electrode connection line 351 and the corresponding third section 3611 and between the negative electrode connection line 352 and the corresponding third section 3611, and can reduce the short-circuit risk between the positive electrode connection line 351 and the negative electrode connection line 352 and between the two temperature sampling lines 361.

[0323] In some embodiments, please continue to refer to Figure 7 As shown, the distance between the connection position of the positive electrode connection line 351 and the corresponding third segment 3611 and the connection position of the negative electrode connection line 352 and the corresponding third segment 3611 is greater than or equal to 5 mm.

[0324] Among them, in Figure 7 , the distance between the connection position of the positive electrode connection line 351 and the corresponding third segment 3611 and the connection position of the negative electrode connection line 352 and the corresponding third segment 3611 is D, that is, D≥5 mm.

[0325] Exemplarily, the distance between the connection position of the positive electrode connection line 351 and the corresponding third segment 3611 and the connection position of the negative electrode connection line 352 and the corresponding third segment 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.

[0326] In this embodiment, by setting the distance between the connection position of the positive electrode connection line 351 and the corresponding third segment 3611 and the connection position of the negative electrode connection line 352 and the corresponding third segment 3611 to be greater than or equal to 5 mm, the interval distance between the connection position of the positive electrode connection line 351 and the corresponding third segment 3611 and the connection position of the negative electrode connection line 352 and the corresponding third segment 3611 is further increased, which is beneficial to further reducing the short - circuit risk between the positive electrode connection line 351 and the negative electrode connection line 352 and between the two temperature sampling lines 361.

[0327] In some embodiments, please refer to Figure 7 As shown, the positive electrode connection line 351 is welded to the corresponding third segment 3611.

[0328] Exemplarily, the positive electrode connection line 351 and the corresponding third segment 3611 can be welded by soldering or arc welding and other structures.

[0329] It should be noted that the welding connection of the positive electrode connection line 351 and the corresponding third segment 3611 is the welding connection of the metal part of the positive electrode connection line 351 and the conductor 311 of the corresponding third segment 3611.

[0330] In this embodiment, by setting the positive electrode connection line 351 and the third segment 3611 of the corresponding temperature sampling line 361 to be in a welded connection structure, on the one hand, the connection reliability between the positive electrode connection line 351 and the third segment 3611 of the corresponding temperature sampling line 361 can be improved to reduce the risk of connection failure between the positive electrode connection line 351 and the third segment 3611 of the corresponding temperature sampling line 361, and on the other hand, the over - current capacity between the positive electrode connection line 351 and the corresponding temperature sampling line 361 can be improved.

[0331] In some embodiments, please continue to refer to Figure 7 As shown, the negative connection line 352 is welded to the corresponding third section 3611.

[0332] Exemplarily, the negative connection line 352 and the corresponding third section 3611 can be welded together by soldering or arc welding and other structures.

[0333] It should be noted that the welding connection between the negative connection line 352 and the corresponding third section 3611 is the welding connection between the metal part of the negative connection line 352 and the conductor 311 of the corresponding third section 3611.

[0334] In this embodiment, by setting the negative connection line 352 and the third section 3611 of the corresponding temperature sampling line 361 to be welded to each other, on the one hand, the connection reliability between the negative connection line 352 and the third section 3611 of the corresponding temperature sampling line 361 can be improved to reduce the risk of connection failure between the negative connection line 352 and the third section 3611 of the corresponding temperature sampling line 361, and on the other hand, the overcurrent capacity between the negative connection line 352 and the corresponding temperature sampling line 361 can be improved.

[0335] According to some embodiments of the present application, refer to Figure 5 As shown, the temperature detection member 35 is snap-fitted onto the busbar member 22. Of course, in other embodiments, the temperature detection member 35 can also be connected to the busbar member 22 by bonding or bolt screwing and other structures.

[0336] In this embodiment, by setting the temperature detection member 35 to be snap-fitted onto the busbar member 22 so that the temperature detection member 35 can detect the temperature of the busbar member 22 or the battery cell 21, the battery 100 with this structure can, on the one hand, reduce the assembly difficulty of the temperature detection member 35 to improve the assembly efficiency of the battery 100, and on the other hand, facilitate the disassembly and replacement of the temperature detection member 35, which is beneficial to reducing the later maintenance difficulty of the battery 100.

[0337] In some embodiments, please continue to refer to Figure 5 As shown, a card slot (not shown in the figure) is provided on the busbar member 22, and at least part of the temperature detection member 35 is snapped into the card slot.

[0338] Exemplarily, the card slot on the busbar member 22 can be formed by stamping or milling and other processes.

[0339] Of course, in other embodiments, the card slot can also be provided on the temperature detection member 35. Correspondingly, part of the busbar member 22 is snapped into the card slot of the temperature detection member 35 to realize the snap-fitting of the temperature detection member 35 onto the busbar member 22.

[0340] In this embodiment, by providing a card slot on the busbar component 22 and clamping at least a part of the temperature detection component 35 in the card slot, the temperature detection component 35 is clamped on the busbar component 22, with a simple structure and convenient assembly.

[0341] According to some embodiments of the present application, referring to Figure 6 、 Figure 7 and Figure 8 As shown, the insulating sheaths 312 of multiple wire harnesses 31 are integrally formed, and a weak structure 313 is formed at the connection position of the insulating sheaths 312 of two adjacent wire harnesses 31. That is to say, the insulating sheaths 312 on the outer sides of the conductors 311 of the second wire harness segments 315 of multiple wire harnesses 31 are formed by an integral process, and a weak structure 313 is formed on the insulating sheath 312 between the conductors 311 of the second wire harness segments 315 of two wire harnesses 31.

[0342] Exemplarily, the insulating sheaths 312 of multiple wire harnesses 31 can be made by integral forming processes such as injection molding or extrusion molding.

[0343] In this embodiment, by setting the insulating sheaths 312 of multiple wire harnesses 31 as an integrally formed structure, a weak structure 313 is formed at the connection position of the insulating sheaths 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points. The sampling assembly 30 adopting this structure can reduce the forming difficulty of the weak structure 313 between the insulating sheaths 312 of multiple wire harnesses 31 and improve the forming efficiency, which is beneficial to improving the production efficiency of the sampling assembly 30.

[0344] 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 sheaths 312 of multiple wire harnesses 31 are separately arranged, and the insulating sheaths 312 of the second wire harness segments 315 of the wire harnesses 31 are adhesively connected to the insulating sheaths 312 of the wire harnesses 31 connected to other sampling points. That is to say, the adhesive for bonding the insulating sheaths 312 of the second wire harness segments 315 of two wire harnesses 31 is the weak structure 313.

[0345] Exemplarily, the insulating sheaths 312 of the second wire harness segments 315 of two adjacent wire harnesses 31 can be adhesively connected by structures such as glue or double-sided tape.

[0346] In this embodiment, the insulating housings 312 of multiple wire harnesses 31 are configured to be split structures, and the insulating housings 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points are adhesively connected, so as to form a weak structure 313 at the adhesive position of the insulating housings 312 of the second wire harness segments 315 of two wire harnesses 31 connected to different sampling points. The sampling assembly 30 with such a structure can expand the number of wire harnesses 31 according to the actual situation, so as to be adapted to different batteries 100, which is beneficial to improving the application range of the sampling assembly 30.

[0347] According to some embodiments of the present application, referring to Figure 3 、 Figure 4 and Figure 6 As shown, the sampling assembly 30 may further include a connector 33. The connector 33 is connected to one end of the second wire harness segment 315 of multiple wire harnesses 31 away from the first wire harness segment 314, and the connector 33 is used for plugging and mating with the battery management system to electrically connect the wire harness 31 and the battery management system. The specific structure of the connector 33 can refer to the related art and will not be elaborated here.

[0348] Among them, in the embodiment where multiple wire harnesses 31 include a voltage sampling wire 32 and a temperature sampling wire 361, one ends of the voltage sampling wire 32 and the temperature sampling wire 361 for electrically connecting with the battery management system are both connected to the connector 33, so that when the connector 33 is plugged and mated with the battery management system, the voltage sampling wire 32 and the temperature sampling wire 361 in multiple wire harnesses 31 can be electrically connected to the battery management system.

[0349] In this embodiment, the sampling assembly 30 is further provided with a connector 33, and the same ends of the second wire harness segments 315 of multiple wire harnesses 31 are all connected to the connector 33, so that when the connector 33 is plugged and mated with the battery management system, the electrical connection between multiple wire harnesses 31 and the battery management system can be realized, thereby reducing the assembly difficulty between the sampling assembly 30 and the battery management system, being beneficial to improving the assembly efficiency between the sampling assembly 30 and the battery management system, and facilitating the replacement and maintenance of the sampling assembly 30, which is beneficial to reducing the later maintenance cost of the battery 100.

[0350] According to some embodiments of the present application, referring to Figure 2 、 Figure 3 and Figure 4 As shown, the battery 100 may further include an insulating member 50. The insulating member 50 is disposed between the sampling assembly 30 and multiple battery cells 21 to insulate and isolate the sampling assembly 30 and the battery cells 21.

[0351] The insulating member 50 serves to insulate and isolate the battery cell 21 and the sampling assembly 30 . The insulating member 50 may be made of various materials, for example, the insulating member 50 may be made of rubber, silicone or plastic.

[0352] In the embodiment of the present application, the busbar component 22 is arranged on the side of the insulating member 50 away from the battery cell 21, so that the busbar component 22 and the sampling assembly 30 are both located on the side of the insulating member 50 away from the battery cell 21 in the third direction Z. Correspondingly, the insulating member 50 is provided with avoidance holes, which penetrate the two sides of the insulating member 50 along the third direction Z. Each avoidance hole is used for an electrode terminal 211 of a battery cell 21 to pass through, so as to facilitate the connection between the electrode terminal 211 and the busbar component 22.

[0353] In this embodiment, an insulating member 50 is provided between the sampling assembly 30 and a plurality of battery cells 21 of the battery module 20, so that the insulating member 50 can insulate and isolate the sampling assembly 30 and the battery cells 21, thereby reducing the risk of overlap between the sampling assembly 30 and the battery cells 21, thereby alleviating the phenomenon of internal short circuit of the battery 100 during use, thereby improving the reliability of the battery 100.

[0354] According to some embodiments of the present application, see Figure 2 and Figure 3 As shown, the battery 100 may include a plurality of battery modules 20 , each of which includes a plurality of busbars 22 and a plurality of battery cells 21 . The battery 100 may also include a plurality of sampling components 30 , with one sampling component 30 corresponding to each battery module 20 .

[0355] Exemplarily, the battery 100 includes two battery modules 20, and the two battery modules 20 are arranged along the second direction Y. Correspondingly, the battery 100 is provided with two sampling assemblies 30, and the two sampling assemblies 30 are both located on one side of the battery module 20 where the busbar component 22 is provided in the third direction Z, and the two sampling assemblies 30 are arranged at intervals along the second direction Y.

[0356] In this embodiment, the battery 100 is provided with a plurality of battery modules 20 and a plurality of sampling components 30, and each sampling component 30 is provided corresponding to a battery module 20, so that the assembly difficulty between the sampling component 30 and the battery module 20 can be reduced while the capacity of the battery 100 is improved, thereby reducing the sampling difficulty of the battery module 20.

[0357] According to some embodiments of the present application, see Figure 2 and Figure 3As shown, along the third direction Z, the busbar component 22 is disposed on one side of the plurality of battery cells 21, and the sampling assembly 30 is located on the side of the plurality of battery cells 21 of the battery module 20 where the busbar component 22 is disposed. The battery 100 further includes a box body 10, and the box body 10 includes a first box body 11 and a second box body 12 arranged along the third direction Z. The first box body 11 and the second box body 12 cover each other and jointly define an assembly space for accommodating the battery cells 21 and the sampling assembly 30.

[0358] Among them, along the third direction Z, the sampling assembly 30 is located on the side of the plurality of battery cells 21 where the busbar component 22 is disposed, 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 to say, the covering direction of the first box body 11 and the second box body 12 of the box body 10 is the same as the arrangement direction of the sampling assembly 30 and the battery cells 21.

[0359] In this embodiment, by disposing the busbar component 22 and the sampling assembly 30 on the same side of the plurality of battery cells 21 in the third direction Z, and setting the covering 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 difficulty of assembling 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, it is convenient to maintain or replace the sampling assembly 30 after opening the first box body 11 and the second box body 12, which is beneficial to reducing the later maintenance cost of the battery 100.

[0360] According to some embodiments of the present application, the present application further provides an electrical device, and the electrical device includes the battery 100 of any of the above solutions, and the battery 100 is used to provide electrical energy for the electrical device.

[0361] Among them, the electrical device may be any of the foregoing devices or systems using the battery 100.

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

[0363] The above are only the preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: A plurality of converging components and a plurality of battery cells, wherein the converging components are electrically connected to the battery cells, and sampling points are arranged on the plurality of converging components and / or the plurality of battery cells; A sampling assembly, comprising a plurality of wire harnesses, the plurality of wire harnesses are used to connect to the plurality of sampling points, the wire harnesses include a conductor and an insulating shell, the insulating shell is covered on the outside of the conductor, the wire harnesses include a first wire harness segment and a second wire harness segment connected to each other in the extension direction thereof, the first wire harness segment is connected to the sampling points, and an end of the second wire harness segment away from the first wire harness segment is used to be electrically connected to a battery management system; The first harness segment of the harness is separated from the harness connected to the other sampling points, and the insulating shell of the second harness segment of the harness is connected to the insulating shell of the harness connected to the other sampling points to form a weak structure at the connection.

2. The battery according to claim 1, characterized in that The second harness segments of the plurality of harnesses extend along the first direction and are arranged side by side along the second direction. The sampling assembly is located at one side of the plurality of battery cells in the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

3. The battery according to claim 2, characterized in that Along the second direction, the insulating shells of the second wire harness segments of the wire harness adjacent to each other and used to be connected to different sampling points are connected to each other and form the weak structure at the connection.

4. The battery according to claim 2, characterized in that Along the second direction, the insulating shells of the second wire harness segments of the wire harness adjacent to each other and used to be connected to the same sampling point are connected to each other and form the weak structure at the connection.

5. The battery according to claim 2, characterized in that The second wiring harness segments of the multiple wiring harnesses form a wiring harness body, and the wiring 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 at least two adjacent second wiring harness segments of the wiring harness along the second direction, and the bottom wall of the groove forms the weak structure.

6. The battery according to claim 5, characterized in that The two first surfaces are both provided with the grooves and are located correspondingly along the third direction. Along the third direction, the weak structure is formed between the bottom surfaces of the two corresponding grooves.

7. The battery according to claim 1, characterized in that The second wire harness segments of the plurality of wire harnesses all extend along a first direction; Among them, the second wiring harness segments of at least two of the wiring harnesses are arranged side by side along the second direction, and the second wiring harness segments of at least two of the wiring harnesses are stacked along the third direction, the insulating shells of the second wiring harness segments of the wiring 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.

8. The battery according to claim 1, characterized in that Along the third direction, the confluence component and the sampling assembly are disposed on a same side of the plurality of battery cells.

9. The battery according to any one of claims 1 to 8, characterized in that The multiple wiring harnesses include at least one voltage sampling line, the first wiring harness segment of the voltage sampling line is a first segment, the second wiring harness segment of the voltage sampling line is a second segment, the first segment is used to be electrically connected to the sampling point, the first segment has a first position connected to the sampling point and a second position connected to the second segment, and at least a portion of the first segment is bent so that the first segment forms a first bent segment between the first position and the second position.

10. The battery according to claim 9, characterized in that 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 to the sampling point.

11. The battery according to claim 10, characterized in that The second section extends along a first direction, the sampling point is located at one side of the second section in the second direction, and the second direction is perpendicular to the first direction; The end of the second segment away from the first segment forms a first end, the first end is used to be electrically connected to the battery management system, and the first curved segment curves from the straight segment along the direction of the first end pointing to the second position.

12. The battery according to claim 11, characterized in that The straight line segment extends along the second direction.

13. The battery according to claim 9, characterized in that The first section is used to be electrically connected to the current collecting component, a safety device is connected to the current collecting component, and one end of the first section away from the second section is connected to the safety device to electrically connect the first section and the current collecting component.

14. The battery according to claim 13, characterized in that Along the third direction, the current collecting component is arranged on one side of the plurality of battery cells, and the safety device is arranged on a side of the current collecting component away from the battery cells; Wherein, the fuse device includes 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 arranged between the first insulating layer and the second insulating layer, the conductive layer includes a first conductive area, a fuse and a second conductive area, the first conductive area and the second conductive area are spaced apart, the first conductive area is connected to the bus component, the second conductive area is connected to the first section, the fuse connects the first conductive area and the second conductive area, and along the third direction, at least part of the first insulating layer is located between the second conductive area and the bus component to insulate and isolate the second conductive area from the bus component.

15. The battery according to claim 14, characterized in that Along the third direction, a projection of the safety device is located inside the current collecting component.

16. The battery according to claim 14, characterized in that A gap is formed between the first conductive region and the second conductive region; Wherein, along the third direction, the first insulating layer and the second insulating layer are connected to each other in regions corresponding to the gap to separate the first conductive region and the second conductive region.

17. The battery according to claim 14, characterized in that The edge region of the first insulating layer and the edge region of the second insulating layer are connected to each other, the first insulating layer and the second insulating layer jointly define a receiving space, and the conductive layer is received in the receiving space.

18. The battery according to claim 17, characterized in that The first insulating layer is provided with a first window, and the first window is configured to expose a portion of the first conductive area, and the exposed portion of the first conductive area is connected to the busbar component.

19. The battery according to claim 18, characterized in that Along the third direction, a projection of the first window is located within the first conductive region.

20. The battery according to claim 18, characterized in that The first conductive area is connected to the current collecting component by welding, and the second insulating layer is provided with a second window, and the second window is configured to expose a portion of the first conductive area; The projections of the second window and the first window in the third direction overlap with each other.

21. The battery according to claim 14, characterized in that The second insulating layer is provided with a third window, and the third window is configured to expose a portion of the second conductive area, and the exposed portion of the second conductive area is connected to the first segment.

22. The battery according to claim 21, characterized in that Along the third direction, a projection of the third window is located within the second conductive region.

23. The battery according to claim 14, characterized in that The first insulating layer and the second insulating layer are thermally composite-connected.

24. The battery according to claim 14, characterized in that The first conductive area is connected to the busbar component by welding, and the second conductive area is connected to the conductor of the first section by welding.

25. The battery according to claim 24, characterized in that The conductive layer comprises a first foil and a second foil which are compositely connected along the third direction, the first foil is located on a side of the second foil facing the busbar component in the third direction, the first foil is located in the first conductive area and is welded to the busbar component, and the second foil is located in the second conductive area and is welded to the conductor of the first section; The material of the converging 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 converging component, and the material of the second foil is the same as the material of the conductor of the first section.

26. The battery according to claim 24, characterized in that The conductive layer, the current collecting component and the conductor of the first segment are all made of the same material.

27. The battery according to claim 24, characterized in that The material of the busbar component is different from that of the conductor of the first segment, the material of the first conductive area is the same as that of the busbar component, and the material of the second conductive area is the same as that of the conductor of the first segment.

28. The battery according to any one of claims 1 to 8, characterized in that The sampling assembly further includes a temperature detection member, which is disposed at the sampling point and configured to detect the temperature of the confluence component or the battery cell; Among them, the multiple wiring harnesses include at least one temperature sampling wire group, the temperature sampling wire group includes two temperature sampling wires with opposite polarities, the first wiring harness segment of the temperature sampling wire is the third segment, the second wiring harness segment of the temperature sampling wire is the fourth segment, the third segment is electrically connected to the temperature detection component, and the end of the fourth segment away from the third segment is used to be electrically connected to the battery management system.

29. The battery according to claim 28, characterized in that The insulating shells of the fourth sections of two of the temperature sampling lines in the temperature sampling line group are adjacent to and connected to each other.

30. The battery according to claim 29, characterized in that The third sections of two of the temperature sampling lines in the temperature sampling line group are arranged at intervals.

31. The battery according to claim 28, characterized in that The temperature detection element has a positive connection line and a negative connection line, and the positive connection line and the negative connection line are respectively connected to the third sections of two temperature sampling lines in the temperature sampling line group to electrically connect the temperature detection element and the two temperature sampling lines in the temperature sampling line group.

32. The battery according to claim 31, characterized in that At least one of the positive electrode connecting line and the third section connected thereto is formed with a second curved section; and / or At least one of the negative electrode connecting line and the third segment connected thereto forms a third curved segment.

33. The battery according to claim 31, characterized in that A connection position between the positive electrode connection line and the corresponding third segment is spaced apart from a connection position between the negative electrode connection line and the corresponding third segment.

34. The battery according to claim 33, characterized in that A distance between a connection position of the positive electrode connection line and the corresponding third segment and a distance between a connection position of the negative electrode connection line and the corresponding third segment is greater than or equal to 5 mm.

35. The battery according to claim 31, characterized in that The positive electrode connecting wire is welded to the corresponding third section; and / or The negative electrode connecting wire is welded and connected to the corresponding third section.

36. The battery according to claim 28, characterized in that The temperature detection component is clamped on the converging component.

37. The battery according to claim 36, characterized in that The confluence component is provided with a slot, and at least a portion of the temperature detection component is stuck in the slot.

38. The battery according to claim 1, characterized in that The insulating housings of the plurality of wire harnesses are integrally formed.

39. The battery according to claim 1, characterized in that The insulating shells of the plurality of wire harnesses are separately provided, and the insulating shell of the second wire harness segment of the wire harness and the insulating shells of the wire harnesses connected to the other sampling points are bonded and connected to each other.

40. The battery according to claim 1, characterized in that The sampling assembly also includes a connector, which is 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 to be plugged and matched with the battery management system to electrically connect the wire harness and the battery management system.

41. The battery according to claim 1, characterized in that The battery also includes: The insulating member is disposed between the sampling assembly and the plurality of battery cells to insulate and isolate the sampling assembly from the battery cells.

42. The battery according to claim 1, characterized in that The battery comprises a plurality of battery modules, wherein the battery modules comprise the plurality of busbars and the plurality of battery cells; Wherein, the battery further includes a plurality of the sampling components, and each battery module is provided with a corresponding sampling component.

43. The battery according to claim 1, characterized in that Along the third direction, the confluence component is disposed on one side of the plurality of battery cells, and the sampling assembly is located on the side of the plurality of battery cells where the confluence component is disposed; Wherein, the battery also includes a box body, which includes a first box body and a second box body arranged along the third direction, the first box body and the second box body cover each other and jointly define an assembly space, and the assembly space is used to accommodate the battery cell and the sampling component.

44. An electrical device, characterized in that: Comprising a battery as described in any one of claims 1-43, wherein the battery is used to provide electrical energy.

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