Battery apparatus and electric apparatus

Abstract

A battery apparatus (100) and an electric apparatus. The battery apparatus (100) comprises: at least one battery cell component (10), which comprises a plurality of battery cells (1); and at least one sampling system, which comprises at least two sampling modules (2), wherein at least two sampling modules (2) in the same sampling system include a first sampling module (2a) and a second sampling module (2b), the first sampling module (2a) and the second sampling module (2b) performing sampling on the same physical quantity of the same battery cell (1).

Description

Battery devices and electrical appliances

[0001] Cross-references to related applications

[0002] This disclosure is based on and claims priority to PCT patent application No. PCT / CN2025 / 078036, filed on February 19, 2025, entitled “Battery Device and Electric Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of battery technology, and more particularly to battery devices and power-consuming devices. Background Technology

[0004] The application of new energy batteries in daily life and industry is becoming increasingly widespread. For example, new energy vehicles equipped with batteries are already widely used, and battery devices are also increasingly being applied in energy storage. In new energy vehicles equipped with batteries, the battery device can provide all or part of the power. In the field of energy storage, battery devices can be installed in energy storage boxes or directly on the user side.

[0005] In related technologies, battery devices typically include battery cell modules and a sampling system. The sampling system can collect physical parameters such as temperature and voltage of the battery cell modules. These collected physical parameters are used to monitor and manage the operating status of each battery cell, ensuring the battery device operates in optimal condition and has a longer lifespan. However, there are instances where the sampling system collects low accuracy of physical parameters such as temperature and voltage, or even misses some parameters. Therefore, improving the accuracy of the sampling system or reducing the probability of missing physical parameters is one of the research issues in the industry. Summary of the Invention

[0006] To address the aforementioned technical problems, this disclosure provides a battery device and a power supply device that can improve the sampling accuracy of the sampling system or reduce the probability of missing physical parameters.

[0007] The embodiments disclosed herein are implemented through the following technical solutions.

[0008] A first aspect of this disclosure provides a battery device, comprising: at least one battery cell assembly including a plurality of battery cells; at least one sampling system, the sampling system including at least two sampling modules, the at least two sampling modules in the same sampling system including a first sampling module and a second sampling module, the first sampling module and the second sampling module sampling the same physical quantity of the same battery cell.

[0009] The sampling module samples the physical quantities of individual battery cells. This allows for monitoring and management of the battery cells based on the collected physical parameters such as temperature and / or voltage, ensuring their normal operation. Furthermore, the first and second sampling modules sample the same physical quantities of the same battery cell, reducing the probability of missing or inaccurate physical quantities due to damage or malfunction of a single sampling module. This enables more effective monitoring and management of the battery cell assembly based on the collected physical parameters, ensuring normal operation, extending the battery device's lifespan, and reducing the probability of thermal runaway in individual battery cells.

[0010] In some embodiments, the first sampling module includes a first sampling transmission element and a first signal processing component. The first sampling transmission element is electrically connected to a battery cell, and the first signal processing component processes the electrical signals of the battery cell collected by the first sampling transmission element. The second sampling module includes a second sampling transmission element and a second signal processing component. The second sampling transmission element is electrically connected to a battery cell, and the second signal processing component processes the electrical signals of the battery cell collected by the second sampling transmission element. The first sampling transmission element and the second sampling transmission element are electrically connected to the same battery cell.

[0011] This enables the monitoring and management of the working status of individual battery cells based on the physical parameters obtained from the sampling and transmission components.

[0012] In some embodiments, the battery device further includes a battery management system, which includes at least two main control modules, including a first main control module and a second main control module. A first signal processing component is communicatively connected to the first main control module, and a second signal processing component is communicatively connected to the second main control module.

[0013] The main control module in the battery management system is also configured with redundancy, which further improves the monitoring of the battery device's operating status and the reliability of its management.

[0014] In some embodiments, the battery device includes at least two sampling systems, each of which collects physical quantities of at least two sets of battery cell components. At least two first signal processing components in the at least two sampling systems are communicatively connected to a first main control module, and at least two second signal processing components in the at least two sampling systems are communicatively connected to a second main control module.

[0015] The first signal processing components of the two sampling systems share the first main control module, and the second signal processing components of the two sampling systems share the second main control module. As a result, the number of parts can be reduced and costs can be saved while improving the reliability of the thermal management of the battery device.

[0016] In some embodiments, the first sampling transmission device includes a first sampling terminal and a first line integration component, the first sampling terminal being electrically connected to a battery cell, and the first line integration component being electrically connected to the first sampling terminal and a first signal processing component; the second sampling transmission device includes a second sampling terminal and a second line integration component, the second sampling terminal being electrically connected to a battery cell, and the second line integration component being electrically connected to the second sampling terminal and the second signal processing component.

[0017] Thus, the sampling transmission device and the battery cell are electrically connected through the sampling terminal.

[0018] In some embodiments, the first line integration component includes a first line integration component body and a first communication connection portion electrically connected, the first communication connection portion being connected to a first signal processing component; the second line integration component includes a second line integration component body and a second communication connection portion electrically connected, the second communication connection portion being connected to a second signal processing component, and the first line integration component body and the second line integration component body are stacked in a first direction.

[0019] With the above configuration, the first circuit integration component body and the second circuit integration component body are stacked, which can save space in the second and third directions of the battery device and facilitate the spatial layout within the battery device.

[0020] In some embodiments, the battery device further includes a busbar connecting different battery cells, and at least one first sampling terminal and at least one second sampling terminal being electrically connected to the same side of the same busbar; or, at least one first sampling terminal and at least one second sampling terminal are respectively connected to two opposite sides of the same busbar.

[0021] Since the sampling terminal is connected to the busbar, physical parameters such as temperature and / or voltage of the battery cell can be collected through the busbar; at least one first sampling terminal and at least one second sampling terminal are respectively connected to both sides or one side of the same busbar along the first direction, thereby enabling redundant sampling of the battery cell assembly.

[0022] In some embodiments, along a first direction, the first sampling terminal and the second sampling terminal are respectively connected to two opposite sides of the first circuit integration body and the second circuit integration body.

[0023] Thus, in the first direction, the distance between the first sampling terminal and the second sampling terminal is greater, which can avoid mutual interference between the first sampling terminal and the second sampling terminal, reduce the probability of mutual interference between the first sampling module and the second sampling module, and improve the reliability of the first sampling module and the second sampling module.

[0024] In some embodiments, in the same sampling system, a first signal processing component and a second signal processing component are arranged along a second direction, which intersects with the first direction.

[0025] Therefore, not only can the first sampling transmission unit and the second sampling transmission unit sample the same physical quantity of the same battery cell assembly, but the first sampling transmission unit and the second sampling transmission unit can also be electrically connected to the first signal processing component and the second signal processing component, respectively. Moreover, the overall size formed by the battery cell assembly, the first sampling transmission unit, the second sampling transmission unit, the first signal processing component, and the second signal processing component is small, which can save space occupied by components.

[0026] In some embodiments, along a first direction, the first signal processing component and the second signal processing component are located on the same side of the first line integration body and the second line integration body, the first communication connection portion is folded relative to the first line integration body toward the side where the first signal processing component is located, and the second communication connection portion is folded relative to the second line integration body toward the side where the second signal processing component is located.

[0027] Since the first communication connection portion is folded toward the side where the first signal processing component is located relative to the body of the first line integration component, the electrical connection between the first sampling transmission component and the first signal processing component can be easily realized. Since the second communication connection portion is folded toward the side where the second signal processing component is located relative to the body of the second line integration component, the electrical connection between the second sampling transmission component and the second signal processing component can be easily realized.

[0028] In some embodiments, the first line integration body is located between the second line integration body and the first signal processing component and the second signal processing component, and the number of second communication connection parts is at least two. The second communication connection parts are all located on the same side of the second signal processing component along a preset direction, and the preset direction is arranged to intersect with the first direction.

[0029] Since all the communication connection parts of the second sampling transmission component are located on the same side of the second signal processing component, after the second sampling transmission component is assembled, the first sampling transmission component can be assembled by folding the communication connection parts of the second signal processing component and the second sampling transmission component.

[0030] In some embodiments, the first line integration body is located between the second line integration body and the first signal processing component and the second signal processing component, the number of first communication connection parts is at least two, and at least one first communication connection part is connected to each of the opposite sides of the first signal processing component along a preset direction, the preset direction and the first direction are arranged intersecting.

[0031] Since the communication connection portion of the first sampling transmission element is connected to both opposite sides of the first signal processing component along the preset direction, the force on both opposite sides of the first signal processing component along the preset direction is relatively uniform, which can improve the stability of the first signal processing component. Both opposite sides of the first signal processing component along the preset direction can be used for the arrangement of internal circuitry.

[0032] In some embodiments, at least two first communication connections connected to the first signal processing component are offset along a second direction, and / or at least two second communication connections connected to the second signal processing component are offset along a second direction.

[0033] This allows for the full utilization of the signal processing component's area in the second direction to arrange electrical components and implement connections; moreover, it facilitates the connection of various communication connection parts, which are respectively connected to different parts of the circuit integration body, to the same signal processing component, thus saving space and reducing the number of parts.

[0034] In some embodiments, when projected along a first direction into the same projection plane, the projection of the first communication connection portion overlaps with the projection portion of the first signal processing component; when projected along the first direction into the same projection plane, the projection of the second communication connection portion overlaps with the projection portion of the second signal processing component.

[0035] Therefore, the first communication connection part and the second communication connection part only need to be folded to partially overlap with the signal processing component along the first direction to achieve electrical connection, which is simple in structure and reliable in connection.

[0036] In some embodiments, when projected onto the same projection plane along a first direction, the projections of the first communication connection portion, the first signal processing component, and the first line integration body overlap sequentially; when projected onto the same projection plane along the first direction, the projections of the second communication connection portion, the second signal processing component, and the second line integration body overlap sequentially.

[0037] This reduces the overall size of the sampling transmission components and signal processing components, saving space occupied by them.

[0038] In some embodiments, the first communication connection portion is welded to the first signal processing component, and the second communication connection portion is welded to the second signal processing component.

[0039] Since the communication connection part and the signal processing component are connected by welding, connectors and other components used to electrically connect the signal processing component and the electrical circuit are eliminated, which saves space occupied by the components and reduces the overall size of the sampling module and the signal processing component along the first direction, thereby improving the space utilization of the battery device.

[0040] In some embodiments, the battery cell assembly includes a plurality of first battery cells and a plurality of second battery cells arranged along a second direction; the same sampling system includes a plurality of sampling transmission elements, the plurality of sampling transmission elements including a first sampling transmission element and a second sampling transmission element; the sampling transmission elements extend along the second direction, the sampling transmission elements include a first sampling transmission element sub-component and a second sampling transmission element sub-component, the first sampling transmission element sub-component and the second sampling transmission element sub-component are arranged along the second direction, the first sampling transmission element sub-component is electrically connected to the first battery cell, the second sampling transmission element sub-component is electrically connected to the second battery cell, wherein the first sampling transmission element sub-component has a first overlapping section on the side of the sampling transmission element sub-component closer to the sampling transmission element sub-component along the second direction, the second sampling transmission element sub-component has a second overlapping section on the side of the sampling transmission element sub-component closer to the sampling transmission element sub-component along the second direction, the first overlapping section and the second overlapping section overlap each other and are electrically connected along the first direction, and the second direction intersects the first direction.

[0041] Since the first overlapping section and the second overlapping section overlap and are electrically connected to each other, the first sampling transmission component and the second sampling transmission component can form a sampling transmission component with a relatively long length along the second direction, which can solve the length limitation of the sampling transmission component. For example, when the length of the battery cell assembly along the second direction is relatively long, the signal of the battery cell exceeds the line range that a single-sided sampling board can carry, so a double-sided sampling board is required. However, due to the material of the sampling board itself, manufacturing difficulty, etc., the length of the sampling transmission component along the second direction is limited. However, in the embodiments of this disclosure, the first sub-component and the second sub-component of the sampling transmission component overlap along the second direction, which can not only overcome the length limitation of the sampling transmission component, but also share some electrical components. Therefore, the overlapping sampling transmission component can be applied to battery cell assemblies with a relatively long length along the second direction, and it is also beneficial to reduce the number of parts in the battery device and simplify the wiring harness or layout design inside the battery device, thereby improving the space utilization of the battery device.

[0042] In some embodiments, the sampling transmission component includes a sampling terminal and a circuit integration component connected to the sampling terminal. The circuit integration component includes a circuit integration component body and electrical wiring. The sampling terminal includes a first sampling terminal sub-component and a second sampling terminal sub-component. The circuit integration component includes a first circuit integration component and a second circuit integration component. The first sub-component of the sampling transmission component includes the first sampling terminal sub-component and the first circuit integration component. The first sub-component of the circuit integration component includes a first sub-component body and a first electrical wiring. The first electrical wiring is located on opposite sides of the first sub-component body along a first direction. The first electrical wiring includes a first communication line and a first power supply line. The first sampling terminal sub-component is electrically connected to a first battery cell and the first communication line. The second sub-component of the sampling transmission component includes a second sampling terminal sub-component and a second circuit integration component. The second circuit integration component includes a second sub-component body and a second electrical wiring. The second electrical wiring is located on opposite sides of the second sub-component body along the first direction. The second electrical wiring includes a second communication line and a second power supply line. The second sampling terminal sub-component is electrically connected to a second battery cell and the second communication line. A portion of the first power supply line located at a first overlap section is electrically connected to a portion of the second power supply line located at a second overlap section.

[0043] The circuit integration component has electrical wiring on both opposite sides of its main body. Compared to a circuit integration component with electrical wiring on only one side, this allows for the arrangement of more electrical wiring without increasing the size of the main body. Therefore, it enables sampling of more individual battery cells or the collection of more physical parameters without increasing the number of components. Furthermore, since the first and second power supply lines are electrically connected, the first and second sub-components of the sampling transmission component can share a power supply module, reducing the number of power supply modules required in the battery device. Additionally, because the electrical connection between the two power supply lines is achieved at the overlap between the first and second overlap sections, there is no need for additional wiring harnesses or connectors to connect the power supply lines, simplifying the wiring.

[0044] In some embodiments, the first sub-component body includes a first main body portion and a first extension portion connected along a second direction, a first overlapping segment including the first extension portion, a sampling terminal first sub-component connected to the side of the first main body portion along a third direction, the third direction intersecting both the first and second directions, the second sub-component body includes a second main body portion, the second overlapping segment including a portion of the second main body portion close to the first sub-component body along the second direction, the sampling terminal second sub-component connected to the second main body portion, and at least the first extension portion of the first sub-component body overlapping with the second main body portion of the second overlapping segment.

[0045] Since the first sampling terminal is connected to the first main body, even if the first extension overlaps with the second main body, it is not easy for the first sampling terminal and the second sampling terminal to interfere with each other. Moreover, the overlap area between the first extension and the second overlap section can be formed to be longer along the second direction, which is beneficial to improving the rigidity of the overlap part and the connection reliability and insulation reliability of the first power supply line and the second power supply line in the overlap section.

[0046] In some embodiments, the second overlap section further includes a portion of the sampling terminal second sub-component, at least one of the sampling terminal second sub-components of the second overlap section being located on the third-direction side of the first extension.

[0047] Therefore, the first extension, the second overlapping section, and the second sampling terminal sub-component of the second overlapping section can share a region along the second direction, which is beneficial for compactly arranging the first sampling transmission component and the second sampling transmission component. Moreover, there is no need to specially adjust the arrangement position of some sampling terminals or the spacing between battery cells in the sampled battery cell assembly. Therefore, it is possible to reliably sample battery cell assemblies that are long along the second direction.

[0048] In some embodiments, the first sub-component body includes a first main body portion, a first overlapping section includes a portion of the first main body portion that is close to the second sub-component body along a second direction, the sampling terminal first sub-component is electrically connected to the first main body portion, the second sub-component body includes a second main body portion and a second extension portion connected along the second direction, the second overlapping section includes a second extension portion, at least the second extension portion of the second sub-component body overlaps with the first main body portion of the first overlapping section, and the sampling terminal second sub-component is connected to the side of the second main body portion along a third direction, the third direction intersecting both the first direction and the second direction.

[0049] Since the second sub-component of the sampling terminal is connected to the second main body, even if the second extension overlaps with the first main body, it is not easy for the first sub-component of the sampling terminal and the second sub-component of the sampling terminal to interfere with each other. Moreover, the overlap area between the second extension and the first overlap section can be formed to be longer along the second direction, which is beneficial to improving the rigidity of the overlap part and the connection reliability and insulation reliability of the first power supply line and the second power supply line in the overlap section.

[0050] In some embodiments, the first overlap section further includes a partial sampling terminal first sub-component, at least one sampling terminal first sub-component of the first overlap section being located on the side of the second extension in a third direction.

[0051] Therefore, the second extension, the first overlapping section, and the first sampling terminal sub-component of the first overlapping section can share a region along the second direction, which is beneficial for compactly arranging the first sampling transmission component and the second sampling transmission component. Moreover, there is no need to specially adjust the arrangement position of some sampling terminals or the spacing between battery cells in the sampled battery cell assembly. Therefore, it is possible to reliably sample battery cell assemblies that are long along the second direction.

[0052] In some embodiments, in the first sampling transmission member, the projections of the first overlapping segment, the second overlapping segment, and the first signal processing component partially overlap each other when projected onto the same projection plane along a first direction; in the second sampling transmission member, the projections of the first overlapping segment, the second overlapping segment, and the second signal processing component partially overlap each other when projected onto the same projection plane along a first direction.

[0053] Therefore, it is easy to realize that the first sub-component of the sampling transmission device and the second sub-component of the sampling transmission device share the signal processing component, and it is also beneficial to the miniaturization of the signal processing component.

[0054] In some embodiments, the portion where the first overlapping segment and the second overlapping segment overlap in the first sampling transmission member and the portion where the first overlapping segment and the second overlapping segment overlap in the second sampling transmission member are at least partially offset along a second direction.

[0055] Therefore, the communication connection part in the first sampling transmission component and the communication connection part in the second sampling transmission component can be offset along the second direction, making it less likely that the communication connection part in the first sampling transmission component and the communication connection part in the second sampling transmission component will interfere with each other.

[0056] A second aspect of this disclosure provides an electrical device that includes the battery device described above.

[0057] Since the power-consuming device includes the aforementioned battery device, the sampling module's acquisition accuracy can be improved or the probability of missing physical parameters can be reduced. Attached Figure Description

[0058] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0059] Figure 1 is a schematic diagram of the structure of an aircraft provided in some embodiments of this disclosure;

[0060] Figure 2 is an exploded perspective view of a battery device provided in some embodiments of this disclosure;

[0061] Figure 3 is a three-dimensional exploded view of a battery cell provided in some embodiments of this disclosure;

[0062] Figure 4 is a partial perspective structural diagram of a battery device provided in some embodiments of this disclosure;

[0063] Figure 5 is a magnified schematic diagram of region A in Figure 4;

[0064] Figure 6 is a three-dimensional structural diagram of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure;

[0065] Figure 7 is a simplified connection diagram of the components in the sampling module provided in some embodiments of this disclosure;

[0066] Figure 8 is a partial perspective structural diagram of a battery device provided in some other embodiments of this disclosure;

[0067] Figure 9 is an exploded perspective view of the bracket, the first sampling transmission component and the second sampling transmission component in an assembled state according to some embodiments of this disclosure;

[0068] Figure 10 is a three-dimensional exploded view of the first and second sampling transmission devices in their assembled state according to some other embodiments of the present disclosure;

[0069] Figure 11 is a schematic diagram of the enlarged structure of region B in Figure 10;

[0070] Figure 12 is a magnified schematic diagram of region C in Figure 10.

[0071] Explanation of reference numerals in the attached drawings: 1000, Aircraft; 100, Battery device; 101, Housing; 101a, First housing; 101b, Second housing; 10, Battery cell assembly; 10a, First battery cell group; 10b, Second battery cell group; 1, Battery cell; 1a, First battery cell; 1b, Second battery cell; 11, Electrode assembly; 12, Tab; 13, Housing; 14, Electrode terminal; 2, Sampling module; 2a, First sampling module; 2b, Second sampling module; 20, Sampling transmission component; 20a, First sampling transmission component ; 20b, Second sampling transmission component; 201, Sampling terminal; 201a, First sampling terminal; 201b, Second sampling terminal; 202, Circuit integration component; 202a, First circuit integration component; 202b, Second circuit integration component; 2020, Circuit integration component body; 2020a, First circuit integration component body; 2020b, Second circuit integration component body; 20200a, First alignment hole; 20200b, Second alignment hole; 203, Communication connection part; 203a, First communication connection part; 202b, Second communication connection part 21. First sub-component of sampling transmission component; 211. First sub-component of sampling terminal; 212. First sub-component of circuit integration component; 2120. First sub-component body; 2121. First main body; 2122. First extension; 213. First sub-component of communication connection component; 2131. First communication connection segment; 2132. Second communication connection segment; 22. Second sub-component of sampling transmission component; 221. Second sub-component of sampling terminal; 222. Second sub-component of circuit integration component; 2220. Second sub-component body; 2221. Second main body; 2222. Second extension 223. Extension; 223. Second sub-component of communication connection; 2231. Third communication connection segment; 2232. Fourth communication connection segment; 30. Signal processing component; 30a. First signal processing component; 30b. Second signal processing component; 3. Main control module; 3a. First main control module; 3b. Second main control module; 4. Bracket; 41. Bracket body; 411. Clearance hole; 42. Support member; 421. Support base; 422. Through part; 43. Busbar clearance hole; 5. Busbar; X. First direction; Y. Second direction; Z. Third direction. Detailed Implementation

[0072] The embodiments of the technical solutions disclosed herein will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solutions disclosed herein and are therefore intended to limit the scope of protection of this disclosure.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0074] In the description of the embodiments of this disclosure, technical terms such as "first," "second," "third," and "fourth" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0075] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0076] In the description of the embodiments of this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0077] In the description of the embodiments of this disclosure, the technical terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated, or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0078] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0079] In the description of the embodiments disclosed herein, unless otherwise expressly specified and limited, the technical term "overlap" should be interpreted broadly, and can refer to a direct overlap or an overlap with an intermediate medium layer.

[0080] The following is a detailed description of this disclosure.

[0081] In related technologies, battery devices typically include battery cell modules and a sampling system. The sampling system can collect physical parameters such as temperature and voltage of the battery cell modules. These collected parameters are used to monitor and manage the operating status of each battery cell, ensuring the battery device operates in optimal condition and has a longer lifespan. However, due to aging or damage to components, the accuracy of the physical parameters collected by the sampling system, such as temperature and voltage, can be low, or even missing. Therefore, improving the sampling system's accuracy or reducing the probability of missing physical parameters is one of the research issues in the industry.

[0082] Research has shown that a sampling system can include multiple sampling modules. These modules sample the same physical quantity of the same battery cell, which can reduce the probability of missing or inaccurate physical quantities of the battery cell components due to damage or malfunction of the sampling modules.

[0083] Based on this design concept, this disclosure provides a battery device, which includes: at least one battery cell assembly, including a plurality of battery cells; at least one sampling system, the sampling system including at least two sampling modules, the at least two sampling modules in the same sampling system including a first sampling module and a second sampling module, the first sampling module and the second sampling module sampling the same physical quantity of the same battery cell.

[0084] The sampling module samples the physical quantities of individual battery cells. This allows for monitoring and management of the battery cells based on the collected physical parameters such as temperature and / or voltage, ensuring their normal operation. Furthermore, the first and second sampling modules sample the same physical quantities for the same battery cell, reducing the probability of missing or inaccurate physical quantities due to damage or malfunction of the sampling modules. This enables more effective monitoring and management of the battery cell assembly based on the collected physical parameters, ensuring normal operation, extending the battery device's lifespan, and reducing the probability of thermal runaway in the battery cell assembly.

[0085] The battery device provided in this disclosure can be used, but is not limited to, in electrical devices such as energy storage devices, vehicles, ships, or aircraft.

[0086] This disclosure also provides an electrical device including the aforementioned battery device. The electrical device can be, but is not limited to, a mobile phone, tablet, laptop, electric toy, power tool, electric vehicle, electric car, ship, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0087] For ease of explanation, an example of an electrical device according to one embodiment of this disclosure is an airplane.

[0088] Considering the high safety design requirements of aircraft, the inventors believe that it is necessary to make redundant backups for key components in the battery device. The sampling system is used for information interaction between the power device and the battery device, and is a key component in the battery device, so it needs to be redundantly backed up. Figure 1 is a schematic diagram of the structure of an aircraft provided by some embodiments of this disclosure. As shown in Figure 1, the aircraft is equipped with a battery device 100. The battery device 100 can be installed in the fuselage or other locations of the aircraft and can be used to power the aircraft.

[0089] In some embodiments of this disclosure, the battery device 100 can not only serve as the operating power source for the aircraft 1000, but also as the driving power source for the aircraft 1000, replacing or partially replacing fuel or natural gas to provide driving power for the aircraft 1000.

[0090] Figure 2 is an exploded perspective view of a battery device 100 provided in some embodiments of this disclosure; the battery device mentioned in the embodiments of this disclosure may include multiple battery cell assemblies 10 for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via busbars.

[0091] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0092] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 101 and a plurality of battery cell assemblies 10, the battery cell assemblies 10 being housed in the housing 101.

[0093] As an example, the battery cell assembly 10 can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0094] As an example, the battery cell assembly can also be housed in the housing by directly fixing multiple battery cells 1 to the housing 101.

[0095] As an example, as shown in Figure 2, the housing 101 may include a first housing 101a and a second housing 101b. The first housing 101a and the second housing 101b are fastened together to form a closed space inside the housing 101 to house the battery cell assembly. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first housing 101a may be a top cover or a bottom plate.

[0096] In this embodiment of the disclosure, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0097] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments disclosed herein are not limited to this.

[0098] Figure 3 is an exploded perspective view of a battery cell 1 provided in some embodiments of this disclosure. The battery cell 1 generally includes an electrode assembly. The electrode assembly 11 includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell 1, active ions (e.g., lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator is disposed between the positive and negative electrodes, which can prevent short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0099] In some embodiments, the battery cell 1 further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This disclosure does not impose specific limitations on the type of electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0100] In some embodiments, as shown in FIG3, the electrode assembly 11 is provided with tabs 12, which can conduct current from the electrode assembly 11. The tabs include a positive tab and a negative tab.

[0101] As an example, battery cell 1 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include square battery cells, blade-shaped battery cells, and multi-prismatic battery cells. Multi-prismatic battery cells are, for example, hexagonal prismatic battery cells. There are no particular limitations in the embodiments disclosed herein.

[0102] In some embodiments, the battery cell may include a housing 13. The housing 13 may be a steel housing, an aluminum housing, a plastic housing (such as a polypropylene housing), a composite metal housing (such as a copper-aluminum composite housing), or an aluminum-plastic film, etc.

[0103] In some embodiments, the housing can be a sealed structure or a non-sealed structure. As an example, when the housing is a non-sealed structure, it serves to protect the electrode assembly, and a sealing bag is included between the housing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag can be a bag-shaped insulating component or an aluminum-plastic film. When the housing is a sealed structure, it is used to encapsulate components such as the electrode assembly and electrolyte.

[0104] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells. This disclosure does not impose any particular limitations.

[0105] In some embodiments, the housing 13 includes an end cap and a housing, the housing having an opening, and the end cap covering the opening. The housing may have one or more openings. The end cap may also be provided one or more.

[0106] In some embodiments, at least one electrode terminal 14 is provided on the housing, and the electrode terminal 14 is electrically connected to the tab 12. The electrode terminal 14 can be directly connected to the tab 12, or it can be indirectly connected to the tab 12 through a current collector. The electrode terminal 14 can be provided on the end cap or on the housing.

[0107] In some embodiments, a pressure relief mechanism is provided on the housing. The pressure relief mechanism is used to release the internal pressure of the battery cell.

[0108] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to Figures 3 to 12.

[0109] In the description of the embodiments of this disclosure, for ease of explanation, the direction of arrow X represents the "first direction," the direction of arrow Y represents the "second direction," and the direction of arrow Z represents the "third direction." The first direction X, the second direction Y, and the third direction Z intersect each other pairwise, and the three directions are not coplanar. In some embodiments, the first direction X, the second direction Y, and the third direction Z intersect each other perpendicularly.

[0110] A first aspect of this disclosure provides a battery device, as shown in Figures 4 to 6. The battery device includes: at least one battery cell assembly 10, which includes a plurality of battery cells 1; and at least one sampling system, which includes at least two sampling modules 2. The at least two sampling modules 2 in the same sampling system include a first sampling module 2a and a second sampling module 2b. The first sampling module 2a and the second sampling module 2b sample the same physical quantity of the same battery cell 1.

[0111] Optionally, the number of battery cell modules 10 can be one, two, three, four or more, etc.

[0112] In some embodiments, as shown in FIG4, a plurality of battery cell assemblies 10 may be arranged along a first direction X, a second direction Y, or a third direction Z.

[0113] Optionally, the number of sampling systems can be one, two, three, four or more, etc.

[0114] In some embodiments, each battery cell assembly 10 may be electrically connected to each sampling system.

[0115] For example, as shown in FIG4, two battery cell assemblies 10 are arranged along the third direction Z, two sampling systems are arranged along the third direction Z, and each battery cell assembly 10 can be electrically connected to each sampling system.

[0116] In some embodiments, the sampling system may include two, three, four or more sampling modules 2.

[0117] In some embodiments, portions of the multiple sampling modules 2 of the same sampling system may be arranged along a first direction X. Of course, the multiple sampling modules 2 of the same sampling system may also be arranged along other directions.

[0118] In some embodiments, the sampling module 2 includes a sampling transmission component 20 and a signal processing component 30.

[0119] The sampling module 2 can collect physical parameters such as temperature, current, and voltage of the battery cell assembly 10.

[0120] For example, voltage sampling typically refers to monitoring the voltage of individual cells or modules to prevent overcharging or over-discharging. Current sampling typically refers to measuring the charge and discharge current using Hall effect sensors or shunts to calculate the state of charge (SOC). Temperature sampling typically refers to monitoring battery temperature using sensors such as positive temperature coefficient thermistors and negative temperature coefficient thermistors to prevent thermal runaway.

[0121] As a basic component of the sampling module, it may include sensors such as voltage acquisition chips, current sensors, and temperature sensors; signal conditioning circuits that filter and amplify the raw signal; power supply circuits that provide stable voltage to the sensors and signal chain (such as low-dropout linear regulators or isolated power supplies); and grounding designs that ensure signal integrity (such as analog / digital ground separation). Furthermore, the sampling module 2 may also include a multiplexer (MUX) and an analog-to-digital converter (ADC) to achieve high-precision data acquisition. This disclosure does not impose any particular limitations on the configuration of the sampling module 2 for sampling and signal transmission; existing solutions can be used.

[0122] The sampling transmission component 20 mainly performs the function of signal transmission. It may include sampling terminals and circuit integration components. The sampling terminals mainly perform the function of electrical connection with the battery cell side and may include nickel strips, sampling windows, bonding wires, etc. The circuit integration components may include flexible circuit boards, flexible flat cables, printed circuit boards, etc.

[0123] In some specific embodiments, the circuit integration is constructed using a flexible printed circuit (FPC), which can be a single-sided flexible circuit, a double-sided flexible circuit, or a multi-layer flexible circuit.

[0124] In some embodiments, the sampling system further includes a main control module.

[0125] The signal processing component 30 converts the analog electrical signals collected by the sampling and transmission component 20 into digital electrical signals and transmits them to the main control module. The main control module monitors and manages the working status of the battery cell assembly 10 based on the electrical signals transmitted by the signal processing component 30.

[0126] In some embodiments, the sampling system further includes a calibration module, which is electrically connected to the first sampling module 2a and the second sampling module 2b respectively. The calibration module is used to acquire at least one of the electrical signals of the battery cell 1 collected by the first sampling module 2a and the electrical signals of the battery cell 1 collected by the second sampling module 2b, and to perform calibration to obtain the final signal of the battery cell.

[0127] In some embodiments, when the calibration module acquires the electrical signal of battery cell 1 collected by the first sampling module 2a or the electrical signal of battery cell 1 collected by the second sampling module 2b, the final signal is the electrical signal of battery cell 1 collected by the first sampling module 2a or the electrical signal of battery cell 1 collected by the second sampling module 2b; when the calibration module acquires the electrical signal of battery cell 1 collected by the first sampling module and the electrical signal of battery cell 1 collected by the second sampling module, the final signal is the average value of the electrical signal of battery cell 1 collected by the first sampling module and the electrical signal of battery cell 1 collected by the second sampling module.

[0128] In some embodiments, both the first sampling module 2a and the second sampling module 2b can sample the same battery cell 1, thereby forming sampling redundancy.

[0129] In some embodiments, as shown in FIG4, the sampling system includes one or two or more sampling modules 2. The sampling module 2 includes a sampling transmission element 20. Without distinction, the sampling transmission element 20 includes an interconnected line integration body 2020 and a sampling terminal 201. The sampling terminal 201 is electrically connected to the battery cell 1.

[0130] In some embodiments, as shown in Figures 3 to 5, the battery cell assembly 10 includes a plurality of battery cells 1, each battery cell including electrode terminals. The battery device includes a busbar 5, which connects to the electrode terminals 14 of different battery cells 1, thereby achieving electrical connection between the battery cells 1. The sampling terminal 201 can be electrically connected to the busbar 5 or the electrode terminals 14, and of course, it can also be electrically connected to other parts of the battery cell 1. For example, in some embodiments, in order to monitor the temperature of the large surface of the battery cell 1, the sampling terminal 201 can be connected to the large surface of the battery cell 1.

[0131] In some embodiments, there are multiple sampling terminals 201, and all or some of the battery cells in the battery cell assembly 10 are electrically connected to different sampling terminals 201.

[0132] In some embodiments, the sampling terminal 201 of the first sampling transmission member 20a and the sampling terminal 201 of the second sampling transmission member 20b are both electrically connected to the battery cell assembly 10.

[0133] In some embodiments, the battery device includes a busbar 5 that connects adjacent battery cells along the second direction Y. The sampling terminals 201 of the first sampling transmission unit 20a and the sampling terminals 201 of the second sampling transmission unit 20b are respectively connected to both sides (e.g., the upper or lower side as shown in FIG4) of the busbar along the first direction X. Thus, the first sampling transmission unit 20a and the second sampling transmission unit 20b can collect physical parameters such as temperature and / or voltage of the same battery cell.

[0134] In some embodiments, the battery device further includes a battery management system, which includes a main control module. The sampling transmission unit 20 can be electrically connected to the main control module via a signal processing component 30. Thus, the sampling transmission unit 20 can transmit the collected parameter data such as temperature and / or voltage of the battery cell assembly 10 to the battery management system via the signal processing component 30. The battery management system monitors and manages the battery cell assembly 10. The specific connection method between the signal processing component 30 and the battery management system can adopt a common method in the prior art, which will not be elaborated here.

[0135] Sampling module 2 samples the physical quantities of battery cell 1. This allows for monitoring and management of battery cell 1 based on the collected physical parameters such as temperature and / or voltage, ensuring its normal operation. Furthermore, since the first sampling module 2a and the second sampling module 2b sample the same physical quantities of the same battery cell, the probability of missing or inaccurate physical quantities in the collected battery cell assembly due to damage or malfunction of a single sampling module 2 is reduced. This enables more effective monitoring and management of the battery cell assembly based on the collected physical parameters such as temperature and / or voltage, ensuring its normal operation, extending the battery device's lifespan, and reducing the probability of thermal runaway in the battery cell assembly.

[0136] In some embodiments, as shown in Figures 4 and 6, the first sampling module 2a includes a first sampling transmission element 20a and a first signal processing component 30a. The first sampling transmission element 20a is electrically connected to the battery cell 1, and the first signal processing component 30a processes the electrical signals of the battery cell 1 collected by the first sampling transmission element 20a. The second sampling module 2b includes a second sampling transmission element 20b and a second signal processing component 30b. The second sampling transmission element 20b is electrically connected to the battery cell 1, and the second signal processing component 30b processes the electrical signals of the battery cell 1 collected by the second sampling transmission element 20b. The first sampling transmission element 20a and the second sampling transmission element 20b are electrically connected to the same battery cell 1.

[0137] In some embodiments, the same sampling system includes a plurality of sampling transmission components 20, the plurality of sampling transmission components 20 including a first sampling transmission component 20a and a second sampling transmission component 20b; the same sampling system includes a plurality of signal processing components 30, the plurality of signal processing components 30 including a first signal processing component 30a and a second signal processing component 30b.

[0138] In some embodiments, a separator (not shown) is provided between the first sampling transmission member 20a and the second sampling transmission member 20b, and the separator has an insulating function.

[0139] In some embodiments, the first sampling transmission member 20a and the second sampling transmission member 20b are respectively bonded to the two sides of the separator along the first direction X.

[0140] In some embodiments, multiple signal processing components 30 are arranged along the second direction Y in the same sampling system. Of course, the multiple signal processing components 30 may also be arranged along other directions.

[0141] In some embodiments, each signal processing component 30 is electrically connected to each sampling transmission component 20.

[0142] The first signal processing component 30a converts the analog electrical signal collected by the first sampling transmission component 20a into a digital electrical signal and transmits it to the main control module; the second signal processing component 30b converts the analog signal collected by the second sampling transmission component 20b into an electrical signal and transmits it to the main control module. The main control module monitors and manages the working status of the battery cell assembly 10 based on the electrical signals transmitted by the first signal processing component 30a and the second signal processing component 30b.

[0143] For example, the first signal processing component 30a and / or the second signal processing component 30b can be constructed by a printed circuit board (PCB) and electrical components disposed on the printed circuit board. Furthermore, the printed circuit board can be a printed circuit board that is not prone to flexible deformation.

[0144] This enables the monitoring and management of the working status of the battery cell assembly 10 based on the physical parameters obtained from the sampling and transmission device.

[0145] In some embodiments, as shown in FIG7, the battery management system includes at least two main control modules 3, the at least two main control modules 3 including a first main control module 3a and a second main control module 3b, a first signal processing component 30a being communicatively connected to the first main control module 3a, and a second signal processing component 30b being communicatively connected to the second main control module 3b.

[0146] Optionally, in some embodiments, the battery device includes at least two sampling systems, which respectively collect physical quantities of at least two sets of battery cell components 10, at least two first signal processing components 30a in the at least two sampling systems are communicatively connected to a first main control module 3a, and at least two second signal processing components 30b in the at least two sampling systems are communicatively connected to a second main control module 3b.

[0147] In other words, the first signal processing component 30a of different sampling systems is electrically connected to the first main control module 3a, and the second signal processing component 30b of different sampling systems is electrically connected to the second main control module 3b.

[0148] Since the sampling module includes sampling transmission components and signal processing components, redundancy is set for both sampling transmission and signal processing. In addition, the main control module in the thermal management system is also set with redundancy accordingly. This can further improve the reliability of the thermal management of the battery device.

[0149] In some embodiments, as shown in Figures 4 and 6, the first sampling transmission device 20a includes a first sampling terminal 201a and a first line integration device 202a. The first sampling terminal 201a is electrically connected to the battery cell 1, and the first line integration device 202a is electrically connected to the first sampling terminal 201a and the first signal processing component 30a. The second sampling transmission device 20b includes a second sampling terminal 201b and a second line integration device 202b. The second sampling terminal 201b is electrically connected to the battery cell 1, and the second line integration device 202b is electrically connected to the second sampling terminal 201b and the second signal processing component 30b.

[0150] The first sampling terminal 201a collects the physical parameters of the battery cell assembly 10, thereby enabling the first sampling transmission component 20a to transmit the collected parameters to the first signal processing component 30a.

[0151] The second sampling terminal 201b collects the physical parameters of the battery cell assembly 10, thereby enabling the second sampling transmission unit 20b to transmit the collected parameters to the second signal processing unit 30b.

[0152] For example, the first sampling terminal 201a and / or the second sampling terminal 201b may be nickel plates.

[0153] Optionally, the number of first sampling terminals 201a can be one, two, three or more, etc.

[0154] In some embodiments, a plurality of first sampling terminals 201a are staggered along the second direction Y.

[0155] Optionally, the number of second sampling terminals 201b can be one, two, three or more, etc.

[0156] In some embodiments, a plurality of second sampling terminals 201b are staggered along the second direction Y.

[0157] Thus, the sampling transmission device and the battery cell are electrically connected through the sampling terminal.

[0158] In some embodiments, as shown in FIG11, the sampling terminal 201 includes a voltage sampling terminal N1 and a temperature sampling unit N2.

[0159] In some embodiments, the first sampling terminal 201a includes a first voltage sampling terminal and a first temperature sampling unit. The first end of the first voltage sampling terminal is electrically connected to a bus (described later), the second end of the first voltage sampling terminal is connected to a first line integration, and the first temperature sampling unit contacts the bus and is electrically connected to the first line integration. The second sampling terminal 201b includes a second voltage sampling terminal and a second temperature sampling unit. The first end of the second voltage sampling terminal is electrically connected to the first bus, the second end of the second voltage sampling terminal is connected to the second line integration, and the second temperature sampling unit contacts the first bus and is electrically connected to the second line integration.

[0160] In some embodiments, the first voltage sampling terminal is configured as a first sampling plate, and the first temperature sampling unit is in contact with the first sampling plate; the second voltage sampling terminal is configured as a second sampling plate, and the second temperature sampling unit is in contact with the second sampling plate.

[0161] In some examples, as shown in Figure 12, the circuit integration component 202 has a through-hole M1. The through-hole M1 divides the circuit integration component into an elastic sheet M2 area, and the voltage sampling terminal (sampling terminal) is attached to the elastic sheet M2. With this configuration, when the circuit integration component is subjected to the expansion force of the battery cell or other external forces, the elastic sheet M2 can elastically deform relative to the body area of ​​the circuit integration component, thereby ensuring that the voltage sampling terminal N1 (sampling terminal) can always maintain contact and electrical connection with the circuit integration component, thus improving the overall reliability of the battery device.

[0162] The first sampling terminal 201a is electrically connected to the first signal processing component 30a via the first line integration component 202a; the second sampling terminal 201b is electrically connected to the second signal processing component 30b via the second line integration component 202b.

[0163] In some embodiments, the first signal processing component 30a includes a first rigid circuit board and a first processing chip. The first processing chip is connected to the first rigid circuit board, and the first rigid circuit board is electrically connected to a first circuit integration component. The first processing chip processes the electrical signals of the battery cells collected by the first circuit integration component 202a.

[0164] The second signal processing component 30b includes a second rigid circuit board and a second processing chip that are electrically connected. The second processing chip is connected to the second rigid circuit board, and the second rigid circuit board is electrically connected to the second circuit integration component. The second processing chip processes the electrical signals of the battery cells collected by the second circuit integration component 202b.

[0165] Therefore, both the first and second sampling modules can collect the electrical signals of the battery cells electrically connected to the busbar. Thus, even if the first sampling module fails, the second sampling module can still work normally to collect the electrical signals of the battery cells and monitor their working status. Alternatively, even if the second sampling module fails, the first sampling module can still work normally to collect the electrical signals of the battery cells and monitor their working status.

[0166] In some embodiments, as shown in Figures 4 and 6, the first line integration component 202a includes a first line integration component body 2020a and a first communication connection portion 203a electrically connected, the first communication connection portion 203a being connected to the first signal processing component 30a; the second line integration component 202b includes a second line integration component body 2020b and a second communication connection portion 203b electrically connected, the second communication connection portion 203b being connected to the second signal processing component 30b, and the first line integration component body 2020a and the second line integration component body 2020b being stacked in a first direction X.

[0167] In some embodiments, as shown in Figures 4 to 6, the sampling transmission component 20 further includes an electrically connected line integration body 2020 and a communication connection portion 203. A sampling terminal 201 is disposed on the line integration body 2020 and electrically connected to the line integration body 2020 and the battery cell assembly 10. A first signal processing component 30a is connected to the first communication connection portion 203a of the first sampling transmission component 20a, thereby being electrically connected to the first sampling transmission component 20a. A second signal processing component 30b is connected to the second communication connection portion 203b of the second sampling transmission component 20b, thereby being electrically connected to the second sampling transmission component 20b.

[0168] Optionally, the circuit integration component body 2020 and the communication connection part 203 can be an integral structure or a separate structure. For example, the circuit integration component body 2020 and the communication connection part 203 can be welded together; the circuit integration component can also be integrally bent to form the circuit integration component body 2020 and the communication connection part 203.

[0169] In some embodiments, the maximum dimension of the communication connection portion 203 along the second direction Y is smaller than the maximum dimension of the line integration body 2020 along the second direction Y.

[0170] The sampling terminal transmits the collected physical parameters and other signals to the circuit integration unit 2020, and the circuit integration unit 2020 then transmits the physical parameters and other signals to the signal processing component 30 through the communication connection unit.

[0171] Because it is possible to achieve electrical connection between the first sampling transmission element 20a and the first signal processing component 30a, and to achieve electrical connection between the second sampling transmission element 20b and the second signal processing component 30b.

[0172] In some embodiments, as shown in FIG6, a first wiring assembly (first wiring assembly body 2020a) has a first alignment hole 20200a, and a second wiring assembly (second wiring assembly body 2020b) has a second alignment hole 20200b. Along the first direction X, the first alignment hole 20200a and the second alignment hole 20200b at least partially overlap, thereby enabling easy implementation or confirmation that the first wiring assembly body 2020a and the second wiring assembly body 2020b are stacked in the first direction X.

[0173] With the above configuration, the first line integration body 2020a and the second line integration body 2020b are stacked structures, which can save space in the battery device in the second direction Y and the third direction Z, and facilitate the spatial layout within the battery device.

[0174] In some embodiments, the first sampling terminal 201a is electrically connected to the first line integration body 2020a, thereby being electrically connected to the first line integration 202a, and the second sampling terminal 201b is electrically connected to the second line integration body 2020b, thereby being electrically connected to the second line integration 202b. The first sampling terminal 201a and the second sampling terminal 201b are stacked in the first direction X.

[0175] Since the first sampling terminal 201a and the second sampling terminal 201b are stacked in the first direction X, space can be saved in the battery device in the second direction, third direction upward.

[0176] In some embodiments, as shown in Figures 5 and 6, the battery device further includes a busbar 5, which connects different battery cells 1, and at least one first sampling terminal 201a and at least one second sampling terminal 201b are electrically connected to the same busbar 5. Optionally, at least one first sampling terminal 201a and at least one second sampling terminal 201b are electrically connected to the same side of the same busbar 5; or, along a first direction X, at least one first sampling terminal 201a and at least one second sampling terminal 201b are respectively connected to two opposite sides of the same busbar 5.

[0177] Busbar 5 is used to electrically connect different battery cells (e.g., adjacent battery cells) to achieve parallel or series connection between battery cells.

[0178] In some embodiments, as shown in Figures 4 and 6, along the first direction X, the bus 5 is located between the signal processing component 30 and the battery cell 1, with a first sampling terminal 201a connected to one side of the bus 5 (e.g., the upper side shown in Figure 4) and a second sampling terminal 201b connected to the other side of the bus 5 (e.g., the lower side shown in Figure 4).

[0179] In some embodiments, within the same projection plane projected along the first direction X, the projections of the first sampling terminal 201a and the second sampling terminal 201b, which are connected to the same busbar 5, have overlapping portions. Optionally, they may completely overlap.

[0180] Regarding the connection method between the sampling terminal and the bus 5, welding or plugging can be used.

[0181] In some specific embodiments, the first end of the first voltage sampling terminal is soldered to the busbar 5; or, the busbar 5 has a first socket (not shown), and the first end of the first voltage sampling terminal extends into the first socket. And / or, the first end of the second voltage sampling terminal is soldered to the busbar 5; or, the busbar has a second socket (not shown), and the first end of the second voltage sampling terminal extends into the second socket. That is, the first voltage sampling terminal can be electrically connected to the busbar 5 by soldering or plugging. The second voltage sampling terminal can be electrically connected to the busbar 5 by soldering or plugging.

[0182] Since the sampling terminal 201 is connected to the busbar, physical parameters such as temperature and / or voltage of the battery cell can be collected through the busbar; at least one first sampling terminal 201a and at least one second sampling terminal 201b are respectively connected to both sides of the same busbar along the first direction X, thereby enabling redundant sampling of the battery cell assembly 10.

[0183] Moreover, through the above configuration, the first sampling terminal 201a and the second sampling terminal 201b do not affect each other when connected to the busbar, which facilitates the configuration of the first sampling terminal 201a and the second sampling terminal 201b, and makes it easy for the first sampling terminal 201a and the second sampling terminal 201b to be electrically connected to the busbar individually.

[0184] In some embodiments, as shown in FIG6, along the first direction X, the first sampling terminal 201a and the second sampling terminal 201b are respectively connected to two opposite sides of the first circuit integration body 2020a and the second circuit integration body 2020b.

[0185] Thus, in the first direction X, the distance between the first sampling terminal 201a and the second sampling terminal 201b is greater, which can avoid mutual interference between the first sampling terminal 201a and the second sampling terminal 201b, reduce the probability of mutual interference between the first sampling module 2a and the second sampling module 2b, and improve the reliability of the first sampling module 2a and the second sampling module 2b.

[0186] Of course, in other embodiments, along the first direction X, the first sampling terminal 201a is located between the first line integration body 2020a and the second line integration body 2020b, and the second sampling terminal 201b is located between the first line integration body 2020a and the second line integration body 2020b. This also allows for electrical connection between the first sampling terminal 201a and the second sampling terminal 201b and the busbar 5.

[0187] In other embodiments, along the first direction X, the first sampling terminal 201a is located between the first circuit integration body 2020a and the second circuit integration body 2020b, and the second sampling terminal 201b is located on the side surface of the second circuit integration body 2020b opposite to the first circuit integration body 2020a. This also allows for electrical connection between the first sampling terminal 201a and the second sampling terminal 201b and the busbar 5.

[0188] In other examples, along the first direction X, the first sampling terminal 201a is located on the side surface of the first circuit integration body 2020a facing away from the second circuit integration body 2020b, and the second sampling terminal 201b is located between the first circuit integration body 2020a and the second circuit integration body 2020b. This also allows for electrical connection between the first sampling terminal 201a and the second sampling terminal 201b and the busbar 5.

[0189] In some embodiments, as shown in FIG4, in the same sampling system, the first signal processing component 30a and the second signal processing component 30b are arranged along the second direction Y, which intersects the first direction X.

[0190] In some embodiments, along the first direction X, at least a portion of the first sampling transmission member 20a and at least a portion of the second sampling transmission member 20b are located between the signal processing component 30 (the first signal processing component 30a and / or the second signal processing component 30b) and the battery cell assembly 10.

[0191] Therefore, not only can the first sampling transmission unit 20a and the second sampling transmission unit 20b sample the same physical quantity of the same battery cell assembly 10, but the first sampling transmission unit 20a and the second sampling transmission unit 20b can also be electrically connected to the first signal processing component 30a and the second signal processing component 30b, respectively. Moreover, the overall size formed by the battery cell assembly 10, the first sampling transmission unit 20a, the second sampling transmission unit 20b, the first signal processing component 30a, and the second signal processing component 30b is relatively small, which can save space occupied by components.

[0192] In some embodiments, as shown in Figures 4 and 6, along the first direction X, the first signal processing component 30a and the second signal processing component 30b are located on the same side of the first line integration body 2020a and the second line integration body 2020b, the first communication connection portion 203a is folded relative to the first line integration body 2020a toward the side where the first signal processing component 30a is located, and the second communication connection portion 203b is folded relative to the second line integration body 2020b toward the side where the second signal processing component 30b is located.

[0193] For example, along the first direction X, the first circuit integration body 2020a is located between the first signal processing component 30a and the battery cell assembly 10, and the first communication connection portion 203a is folded relative to the first circuit integration body 2020a, so that the first communication connection portion 203a can be connected to the first signal processing component 30a. Further, a portion of the first communication connection portion 203a can be folded to the side of the first signal processing component 30a opposite to the battery cell assembly 10 along the first direction X.

[0194] For example, along the first direction X, the second wiring assembly body 2020b is located between the second signal processing component 30b and the battery cell assembly 10, and the second communication connection portion 203b is folded relative to the second wiring assembly body 2020b, so that the second communication connection portion 203b can be connected to the second signal processing component 30b. Furthermore, a portion of the second communication connection portion 203b can be folded to the side of the second signal processing component 30b opposite to the battery cell assembly 10 along the first direction X.

[0195] In some alternative embodiments, a portion of the communication connection 203 may be folded to the side of the signal processing component 30 facing the battery cell assembly 10 along the first direction X (e.g., the lower side shown in FIG4).

[0196] In some embodiments, the signal processing component 30 and the line integration body 2020 are spaced apart along the first direction X.

[0197] Since the first communication connection portion is folded toward the side where the first signal processing component is located relative to the body of the first line integration component, the electrical connection between the first sampling transmission component and the first signal processing component can be easily realized. Since the second communication connection portion is folded toward the side where the second signal processing component is located relative to the body of the second line integration component, the electrical connection between the second sampling transmission component and the second signal processing component can be easily realized.

[0198] In some embodiments, as shown in Figures 4 and 6, the first line integration body 2020a is located between the second line integration body 2020b and the first signal processing component 30a and the second signal processing component 30b. The number of second communication connection parts 203b is at least two, and the second communication connection parts 203b are all located on the same side of the second signal processing component 30b along a preset direction. The preset direction is arranged to intersect with the first direction X.

[0199] For example, the communication connection section 203 (first communication connection section 203a or second communication connection section 203b) includes at least two communication connection segments (e.g., the first communication connection segment 2131 and the second communication connection segment 2132 shown in FIG. 11; the third communication connection segment 2231 and the fourth communication connection segment 2232 shown in FIG. 12), which are connected sequentially. At least one communication connection segment is located on the side of the signal processing component 30 opposite to the battery cell assembly 10 along the first direction X and is electrically connected to the signal processing component 30. The other communication connection segment is connected between the communication connection segment electrically connected to the signal processing component 30 and the line integration body 2020.

[0200] For example, the preset direction can be a second direction Y or a third direction Z.

[0201] For example, along the first direction X, the second signal processing component 30b is located on one side of the second line integration body 2020b, and the second communication connection portion 203b is folded relative to the second line integration body 2020b toward the side where the second signal processing component 30b is located, wherein all the second communication connection portions 203b are folded in the same direction.

[0202] Additionally, the second line integration 202b may include two or more second communication connection portions 203b, each of which can be used to transmit signals from a portion (or segment) of the second line integration body 2020b to the second signal processing component 30b. This will be described in detail below.

[0203] Since all the communication connection parts of the second sampling transmission element 20b are located on the same side of the second signal processing component 30b, after the second sampling transmission element 20b is installed, the first sampling transmission element 20a can be assembled by folding the communication connection parts of the second signal processing component 30b and the second sampling transmission element 20b.

[0204] Further details are provided. As described above, the first line integration component 202a and the second line integration component 202b are stacked, with the second line integration component 202b located between the first line integration component 202a and the battery cell assembly 10. The first line integration component 202a is located between the first signal processing component 30a and the second signal processing component 30b and the second line integration component 202b, i.e., along the first direction X toward the battery cell assembly 10. The signal processing component 30 (the first signal processing component 30a and the second signal processing component 30b), the first line integration component 202a, and the second line integration component 202b are stacked sequentially.

[0205] To ensure that the connection between the second communication connection 203b and the second line integration body 2020b does not obstruct the installation of the first line integration body 2020a, the two second communication connection parts 203b of the second sampling transmission component 20b are arranged on the same side. This allows a flexible hinge structure to be formed between the second communication connection part 203b and the second sampling transmission component 20b after connection with the second signal processing component 30b. This enables the opening and closing of the second sampling transmission component 20b and the second signal processing component 30b. Therefore, after the assembly of the second sampling transmission component 20b and the second signal processing component 30b is completed, the flexible hinge structure can be opened, and the first sampling transmission component 20a and the first signal processing component 30a can be stacked on top of the second sampling transmission component 20b. Then, the flexible hinge structure can be closed, and the second signal processing component 30b can be stacked on top of the first sampling transmission component 20a.

[0206] In some embodiments, the first line integration body 2020a is located between the second line integration body 2020b and the first signal processing component 30a and the second signal processing component 30b. The number of first communication connection parts 203a is at least two. At least one first communication connection part 203a is connected to each of the opposite sides of the first signal processing component 30a along a preset direction. The preset direction is arranged to intersect with the first direction.

[0207] For example, the preset direction can be a second direction Y or a third direction Z.

[0208] For example, along the first direction X, the first signal processing component 30a is located on one side of the first line integration body 2020a, and the first communication connection portion 203a is folded relative to the first line integration body 2020a toward the side where the first signal processing component 30a is located, wherein some of the first communication connection portions 203a are folded in different directions. In addition, the first line integration body 202a may include two or more first communication connection portions 203a, each of which can be used to transmit signals from a portion (or a segment) of the first line integration body 2020a to the first signal processing component 30a.

[0209] Since the communication connection portion 203 of the first sampling transmission element 20a is connected to both opposite sides of the first signal processing component 30a along the preset direction, the force on both opposite sides of the first signal processing component 30a along the preset direction is relatively uniform, which can improve the stability of the first signal processing component 30a. Both opposite sides of the first signal processing component 30a along the preset direction can be used for the arrangement of internal circuits of the first signal processing component 30a.

[0210] In some embodiments, at least two first communication connection portions 203a connected to the first signal processing component 30a are offset along the second direction Y.

[0211] In some embodiments, at least two second communication connection portions 203b connected to the second signal processing component 30b are offset along the second direction Y.

[0212] In some embodiments, at least two first communication connection portions 203a connected to the first signal processing component 30a are offset along the second direction Y, and at least two second communication connection portions 203b connected to the second signal processing component 30b are offset along the second direction Y.

[0213] This allows for the full utilization of the area of ​​the signal processing component 30 in the second direction Y for arranging electrical components and implementing connections; moreover, it facilitates the connection of various communication connection parts that are respectively connected to different parts of the circuit integration body to the same signal processing component 30, which helps to save space and reduce the number of parts.

[0214] In some embodiments, as shown in Figures 4 and 6, when projected along the first direction X into the same projection plane, the projection of the first communication connection portion 203a overlaps with the projection of the first signal processing component 30a; when projected along the first direction X into the same projection plane, the projection of the second communication connection portion 203b overlaps with the projection of the second signal processing component 30b.

[0215] In some embodiments, the projection of the first communication connection portion 203a onto the same projection plane along the first direction X overlaps with the projection of the first signal processing component 30a.

[0216] In some embodiments, when projected along the first direction X into the same projection plane, part or all of the communication connection segment (e.g., the first communication connection segment) of the first communication connection portion 203a connected to the first signal processing component 30a overlaps with part of the projection of the first signal processing component 30a.

[0217] In some embodiments, the projection of the second communication connection portion 203b onto the same projection plane along the first direction X overlaps with the projection of the second signal processing component 30b.

[0218] In some embodiments, when projected along the first direction X into the same projection plane, part or all of the communication connection segment (e.g., the third communication connection segment) of the second communication connection portion 203b connected to the second signal processing component 30b overlaps with part of the projection of the second signal processing component 30b.

[0219] Therefore, the first communication connection part 203a and the second communication connection part 203b only need to be folded so that they partially overlap with the signal processing component 30 along the first direction X to achieve electrical connection. The structure is simple and the connection is reliable.

[0220] In some embodiments, as shown in Figures 4 and 6, when projected along the first direction X into the same projection plane, the projections of the first communication connection portion 203a, the first signal processing component 30a, and the first line integration body 2020a overlap sequentially; when projected along the first direction X into the same projection plane, the projections of the second communication connection portion 203b, the second signal processing component 30b, and the second line integration body 2020b overlap sequentially.

[0221] In some embodiments, when projected along the first direction X into the same projection plane, the projections of the first communication connection portion 203a (e.g., the first communication connection segment), the first signal processing component 30a, and the first line integration body 2020a overlap at least partially or partially with each other.

[0222] In some embodiments, the projections of the second communication connection portion 203b (e.g., the third communication connection segment), the second signal processing component 30b, and the second line integration body 2020b are projected onto the same projection plane along the first direction X, and at least partially or partially overlap with each other.

[0223] This reduces the overall size of the sampling transmission component 20 and the signal processing component 30, saving space occupied by the sampling transmission component 20 and the signal processing component 30.

[0224] In some embodiments, as shown in Figures 4 and 6, the sampling transmission component 20 further includes electrical wiring (not shown), and both the wiring integration body 2020 and the communication connection part 203 are provided with electrical wiring (not shown).

[0225] In some embodiments, the electrical wiring is located on opposite sides of the wiring assembly body 2020 along the first direction X.

[0226] In some embodiments, the electrical circuitry includes a communication line and a power supply line. The communication line is used to transmit analog or digital signals for collecting parameters such as temperature and / or voltage of the battery cell assembly 10, and the power supply line provides operating voltage to the sampling element.

[0227] In some embodiments, the sampling transmission member 20 further includes a sampling insulator (not shown) that covers the portion of the communication connection 203 other than the portion electrically connected to the signal processing component 30, and the signal processing component 30 further includes a slave circuit insulator (not shown) that covers the portion of the signal processing component 30 other than the portion electrically connected to the communication connection 203.

[0228] The sampling insulation component is used to insulate parts of the communication connection 203 and the electrical wiring from the outside environment. Optionally, the sampling insulation component can be a sampling insulation layer, and the material of the sampling insulation component can be polyimide, polyester, liquid photoresist solder resist ink, etc.

[0229] In some embodiments, the first communication connection portion 203a is welded to the first signal processing component 30a, and the second communication connection portion 203b is welded to the second signal processing component 30b.

[0230] In some embodiments, the communication connection 203 and the signal processing component 30 can be mechanically connected and signal connected by welding.

[0231] In some embodiments, the signal processing components and electrical circuits are connected by solder paste.

[0232] Alternatively, the signal processing components and electrical wiring can be laser welded or hot bar welded.

[0233] Since the communication connection part and the signal processing component are connected by welding, connectors and other components used to electrically connect the signal processing component and the electrical circuit are eliminated, which saves space occupied by the components and reduces the overall size of the sampling module and the signal processing component along the first direction, thereby improving the space utilization of the battery device.

[0234] In some embodiments, as shown in Figures 8 to 10, the battery cell assembly includes a plurality of first battery cells 1a and a plurality of second battery cells 1b arranged along a second direction Y; the same sampling system includes a plurality of sampling transmission elements 20, each sampling transmission element 20 including a first sampling transmission element 20a and a second sampling transmission element 20b; the sampling transmission elements 20 extend along the second direction Y, each sampling transmission element 20 including a first sampling transmission element sub-component 21 and a second sampling transmission element sub-component 22, the first sampling transmission element 21 and the second sampling transmission element sub-component 22 being arranged along the second direction Y, and the sampling transmission... The first sub-component 21 of the sampling transmission component is electrically connected to the first battery cell 1a, and the second sub-component 22 of the sampling transmission component is electrically connected to the second battery cell 1b. The first sub-component 21 of the sampling transmission component has a first overlapping section on the side of the second sub-component 22 along the second direction Y (for example, the left side shown in Figure 10), and the second sub-component 22 of the sampling transmission component has a second overlapping section on the side of the first sub-component 21 along the second direction Y (for example, the right side shown in Figure 10). Along the first direction X, the first overlapping section and the second overlapping section overlap each other and are electrically connected. The second direction Y intersects the first direction X.

[0235] In some embodiments, as shown in FIG8, the battery cell assembly 10 includes a plurality of battery cells 1. In order to facilitate the distinction between the battery cells 1 sampled by the first sampling transmission member 21 and the battery cells 1 sampled by the second sampling transmission member 22, the plurality of battery cells 1 sampled by the same sampling transmission member 20 are divided into a plurality of first battery cells 1a and a plurality of second battery cells 1b. The plurality of first battery cells 1a constitute a first battery cell group 10a, and the plurality of second battery cells 1b constitute a second battery cell group 10b. The first battery cell group 10a and the second battery cell group 10b are arranged sequentially along the second direction Y.

[0236] For example, the first battery cells 1a in the first battery cell group 10a are arranged along the second direction Y.

[0237] For example, the second battery cells 1b in the second battery cell group 10b are arranged along the second direction Y.

[0238] For ease of understanding, as shown in Figure 8, the part to the left of the dashed line L1 is the first battery cell group 10a, and the part to the right of the dashed line L1 is the second battery cell group 10b. It can be understood that the position of the dashed line L1 can vary depending on the range of battery cells sampled by the two sub-components of the sampling transmission device; moreover, it can be understood that the dashed line L1 is an imaginary line.

[0239] In some embodiments, the battery device includes at least one sampling module 2, which can sample physical quantities corresponding to each of the multiple battery cell assemblies. The sampling module 2 may include a sampling transmission component 20 and a signal processing component 30. The sampling transmission component 20 is mainly used for the acquisition and transmission of physical quantity signals, while the signal processing component 30 is mainly used for signal processing, control, and communication. It can be primarily used for local control and is sometimes referred to as a slave control module. The battery device also includes a battery management system, which may include a master control module 3. The master control module 3 is mainly used for overall control and can communicate with the multiple signal processing components 30.

[0240] In some embodiments, the sampling transmission component 20 includes a plurality of sampling transmission component sub-components, which can be arranged sequentially along the second direction Y, and implemented by overlapping. For ease of description, two overlapping sampling transmission component sub-components are referred to as the first sampling transmission component and the second sampling transmission component. It is understood that the number of sampling transmission component sub-components can be more than two, and any two overlapping sampling transmission component sub-components can be referred to as the first sampling transmission component and the second sampling transmission component.

[0241] As shown in Figure 8, the sampling transmission component 20 includes a first sampling transmission component 21 and a second sampling transmission component 22. Of course, the sampling transmission component 20 may include other sampling transmission component components. The first sampling transmission component 21 and the second sampling transmission component 22 are connected and electrically connected along the second direction Y.

[0242] In some embodiments, the first sub-component 21 of the sampling transmission component extends along the second direction Y.

[0243] In some embodiments, the second sub-component 22 of the sampling transmission component extends along the second direction Y.

[0244] In some embodiments, as shown in Figures 8 and 10, the first sub-component 21 of the sampling transmission component is electrically connected to the first battery cell 1a. The first sub-component 21 of the sampling transmission component can be directly or indirectly electrically connected to the first battery cell 1a. For example, the first sub-component 21 of the sampling transmission component includes a first sub-component 211 of the sampling terminal, which is connected to the first battery cell 1a, thereby realizing the electrical connection between the first sub-component 21 of the sampling transmission component and the first battery cell 1a.

[0245] In some embodiments, the number of sampling terminal first sub-components 211 is multiple, and all or part of the first battery cells 1a in the first battery cell group 10a are electrically connected to different sampling terminal first sub-components 211.

[0246] In some embodiments, as shown in Figures 8 and 10, the second sub-component 22 of the sampling transmission element is electrically connected to the second battery cell 1b. The second sub-component 22 of the sampling transmission element can be directly or indirectly electrically connected to the second battery cell 1b. For example, the second sub-component 22 of the sampling transmission element includes a second sub-component 221 of the sampling terminal, which is connected to the second battery cell 1b, thereby achieving the electrical connection between the second sub-component 22 of the sampling transmission element and the second battery cell 1b.

[0247] In some embodiments, as shown in FIG10, the portion of the first sampling transmission component 21 located within the dashed frame O1 is a first overlapping segment, and the portion of the second sampling transmission component 22 located within the dashed frame O1 is a second overlapping segment. Along the first direction X, the overlapping portions of the first sampling transmission component 21 and the second sampling transmission component 22 are their respective overlapping segments. The position and size of the dashed frame O1 can vary according to the actual situation; moreover, the dashed frame O1 is a hypothetical frame set for ease of explanation.

[0248] In some embodiments, at least one of the first overlapping section and the second overlapping section is configured as a plate.

[0249] In some embodiments, both the first overlapping segment and the second overlapping segment are plate-shaped. Optionally, the first overlapping segment and the second overlapping segment overlap along the thickness direction of the plate-shaped first overlapping segment; or along the width direction of the plate-shaped first overlapping segment.

[0250] In one specific embodiment, both the first overlapping segment and the second overlapping segment are plate-shaped, and the plate surface extension direction of both the first overlapping segment and the second overlapping segment is perpendicular to the first direction X, and the first overlapping segment and the second overlapping segment overlap along the first direction X.

[0251] Optionally, the first lap segment and the second lap segment can be directly lapped together, for example, by welding; the first lap segment and the second lap segment can also be indirectly lapped together, for example, by lapping together through a connector or connector.

[0252] In some embodiments, the sampling transmission element 20 is constructed of a flexible printed circuit (FPC), which can be a single-sided flexible circuit, a double-sided flexible circuit, or a multi-layer flexible circuit.

[0253] Since the first sampling and transmission component 21 is electrically connected to the first battery cell 1a and the second sampling and transmission component 22 is electrically connected to the second battery cell 1b, the first sampling and transmission component 21 and the second sampling and transmission component 22 can respectively collect physical parameters such as temperature and / or voltage of the first battery cell 1a and the second battery cell 1b. Therefore, the battery cells can be monitored and managed based on the collected physical parameters such as temperature and / or voltage, so that the battery cell assembly 10 can work normally, which is beneficial to extending the service life of the battery device and reducing the probability of thermal runaway of the battery cells. Since the first overlapping section and the second overlapping section overlap and are electrically connected to each other, the first sub-component and the second sub-component of the sampling transmission component can form a sampling transmission component with a relatively long length along the second direction Y, which can solve the length limitation of the sampling transmission component. For example, when the length of the battery cell assembly 10 along the second direction Y is relatively long, the battery cell signal exceeds the line range that a single-sided sampling board can carry, so a double-sided sampling board is required. However, due to the material of the sampling board itself, manufacturing difficulty, etc., the length of the sampling transmission component along the second direction Y is limited. In this embodiment, the first sub-component 21 and the second sub-component 22 of the sampling transmission component overlap along the second direction Y, which can not only break through the length limitation of the sampling module 2, but also share some electrical components. Therefore, the overlapping sampling transmission component can be applied to the battery cell assembly 10 with a relatively long length along the second direction Y, and it is also beneficial to reduce the number of parts of the battery device and simplify the wiring harness or layout design inside the battery device, thereby improving the space utilization of the battery device.

[0254] In some embodiments, as shown in FIG10, the sampling transmission device 20 includes a sampling terminal 201 and a circuit integration device 202 connected to the sampling terminal 201. The circuit integration device 202 includes a circuit integration device body 2020 and an electrical circuit (not shown). The sampling terminal 201 includes a first sampling terminal sub-component 211 and a second sampling terminal sub-component 221. The circuit integration device 202 includes a first circuit integration device 212 and a second circuit integration device 222. The first sampling transmission device sub-component 21 includes the first sampling terminal sub-component 211 and the first circuit integration device 212. The first circuit integration device 212 includes a first sub-component body 2120 and a first electrical circuit (not shown). The first electrical circuit is located along a first direction from the first sub-component body 2120. On opposite sides of X, the first electrical circuit includes a first communication line and a first power supply line. The sampling terminal first sub-component 211 is electrically connected to the first battery cell 1a and the first communication line. The sampling transmission component second sub-component 22 includes the sampling terminal second sub-component 221 and the circuit integration component second sub-component 222. The circuit integration component second sub-component 222 includes the second sub-component body 2220 and the second electrical circuit. The second electrical circuit is located on opposite sides of the second sub-component body 2220 along the first direction X. The second electrical circuit includes the second communication line and the second power supply line. The sampling terminal second sub-component 221 is electrically connected to the second battery cell 1b and the second communication line. The portion of the first power supply line located at the first overlap section is electrically connected to the portion of the second power supply line located at the second overlap section.

[0255] In some embodiments, the first electrical circuit (not shown) includes a first communication line and a first power supply line. The first communication line is used to transmit analog or digital signals for collecting parameters such as temperature, voltage, and current of the first battery cell 1a. The first power supply line provides operating voltage from the power supply module to the first sub-component 21 of the sampling transmission device.

[0256] In some embodiments, the first electrical line (not shown) may further include a first auxiliary line, which may include a communication line, a balancing line, a ground wire, etc. The first auxiliary line can enhance the function of the first sub-component 21 of the sampling transmission device and improve the stability of the first sub-component 21 of the sampling transmission device.

[0257] In some embodiments, the second electrical circuit (not shown) includes a second communication line and a second power supply line. The second communication line is used to transmit analog or digital signals for collecting parameters such as temperature and / or voltage of the second battery cell 1b. The second power supply line provides operating voltage from the power supply module to the second sub-component 22 of the sampling transmission device.

[0258] In some embodiments, the second electrical line (not shown) may also include a second auxiliary line, which may include a communication line, a balancing line, a ground line, etc. The second auxiliary line can enhance the function of the second sub-component 22 of the sampling transmission device and improve the stability of the second sub-component 22 of the sampling transmission device.

[0259] The first sampling terminal component 211 collects the physical parameters of the first battery cell 1a and transmits the collected parameters to the signal processing component 30 via the first communication line; the second sampling terminal component 221 collects the physical parameters of the second battery cell 1b and transmits the collected parameters to the signal processing component 30 via the second communication line.

[0260] In some embodiments, there are multiple sampling terminal first sub-components 211, and each sampling terminal first sub-component 211 collects the physical parameters of each first battery cell in the first battery cell assembly 10a via a busbar.

[0261] In some embodiments, there are multiple sampling terminal second sub-components 221, and each sampling terminal second sub-component 221 collects the physical parameters of each second battery cell in the second battery cell assembly 10b via a busbar.

[0262] In some embodiments, the wiring assembly may include an insulating substrate layer and electrical wiring carried and / or covered by the insulating substrate layer. In a specific embodiment, the insulating substrate layer forms the wiring assembly body, with electrical wiring arranged on opposite sides of the wiring assembly body in the thickness direction.

[0263] Since the circuit integration component has electrical wiring on both sides of its main body, compared to a circuit integration component with electrical wiring on only one side, more electrical wiring can be arranged without increasing the size of the main body. Therefore, it is possible to sample more battery cells or collect more physical parameters without increasing the number of components. In addition, since the first power supply line and the second power supply line are electrically connected, the first sampling transmission component 21 and the second sampling transmission component 22 can share a power supply module, which can reduce the number of power supply modules required in the battery device. Furthermore, since the electrical connection between the two power supply lines is achieved at the overlap of the first and second overlap sections, it is not necessary to additionally provide wiring harnesses, connectors, etc., for connecting the power supply lines, thus simplifying the wiring.

[0264] In some embodiments, as shown in FIG10, referring to the second sampling module 2b, the first sub-component body 2120 includes a first main body portion 2121 and a first extension portion 2122 connected along the second direction Y. The first overlapping section includes the first extension portion 2122. The sampling terminal first sub-component 211 is connected to the side of the first main body portion 2121 along the third direction Z. The third direction Z intersects both the second direction Y and the first direction X. The second sub-component body 2220 includes a second main body portion 2221. The second overlapping section includes a portion of the second main body portion 2221 that is close to the first sub-component body 2120 along the second direction Y. The sampling terminal second sub-component 221 is connected to the second main body portion 2221. At least the first extension portion 2122 of the first sub-component body 2120 overlaps with the second main body portion 2221 of the second overlapping section.

[0265] Optionally, the first overlapping section may include a portion of the first extension 2122, all of the first extension 2122, or all of the first extension 2122 and a portion of the first main body 2121.

[0266] In some embodiments, along the third direction Z, the two ends of the first extension 2122 do not extend beyond the two ends of the second sub-body 2220.

[0267] Optionally, the first extension 2122 overlaps with the second main body 2221 of the second overlapping section; or the portion of the first main body 2121 close to the first extension 2122 along the second direction Y and the first extension 2122 overlaps with the second main body 2221 of the second overlapping section.

[0268] In some embodiments, the first extension 2122 overlaps with the second overlap section, avoiding the position where the sampling terminal second sub-component 221 is connected to the second overlap section.

[0269] In some embodiments, the farthest distance between the two ends of the first extension 2122 along the third direction Z is less than the farthest distance between the two ends of the first main body 2121 along the third direction Z.

[0270] Since the first sampling terminal sub-component 211 is not located in the first extension 2122, even if the first extension overlaps with the second main body, it is not easy for the first sampling terminal sub-component 211 and the second sampling terminal sub-component 221 to interfere with each other. Moreover, the overlap area between the first extension 2122 and the second overlap section can be formed to be longer along the second direction Y, which is beneficial to improve the rigidity of the overlap part and the connection reliability and insulation reliability of the first power supply line and the second power supply line in the overlap part.

[0271] In some embodiments, as shown in FIG10, the second overlap section further includes a partial sampling terminal second sub-component 221, at least one sampling terminal second sub-component 221 of the second overlap section being located on the side of the first extension 2122 along the third direction Z.

[0272] Optionally, one, two, three or more sampling terminals of the second overlap section may be located on the side of the first extension 2122 along the third direction Z.

[0273] Therefore, the first extension 2122, the second overlapping section, and the sampling terminal second sub-component 221 of the second overlapping section can share a region along the second direction Y, which is beneficial to arrange the sampling transmission first sub-component 21 and the sampling transmission second sub-component 22 compactly. Moreover, there is no need to make special adjustments to the arrangement position of some sampling terminals or the spacing between battery cells in the sampled battery cell assembly 10. Therefore, it is possible to reliably sample battery cell assemblies 10 with a long length along the second direction Y.

[0274] It is understandable that the sampling terminal second sub-component 221 of the second overlapping section may not be located on the side of the first extension 2122 along the third direction Z.

[0275] In some embodiments, as shown in FIG10, referring to the first sampling module 2a, the first sub-component body 2120 includes a first main body portion 2121, and a first overlapping section includes a portion of the first main body portion 2121 that is close to the second sub-component body 2220 along the second direction Y. The sampling terminal first sub-component 211 is electrically connected to the first main body portion 2121. The second sub-component body 2220 includes a second main body portion 2221 and a second extension portion 2222 connected along the second direction Y. The second overlapping section includes a second extension portion 2222. At least the second extension portion 2222 in the second sub-component body 2220 overlaps with the first main body portion 2121 of the first overlapping section. The sampling terminal second sub-component 221 is connected to the side of the second main body portion 2221 along the third direction Z. The third direction Z intersects both the second direction Y and the first direction X.

[0276] Optionally, the second overlapping section may include a portion of the second extension 2222, all of the second extension 2222, or all of the second extension 2222 and a portion of the second main body 2221.

[0277] In some embodiments, along the third direction Z, the two ends of the second extension 2222 do not extend beyond the two ends of the first sub-component body 2120.

[0278] Optionally, the second extension 2222 overlaps with the first main body 2121 of the first overlapping section; or the portion of the second main body 2221 close to the second extension 2222 along the second direction Y and the second extension 2222 overlaps with the first main body 2121 of the first overlapping section.

[0279] In some embodiments, the second extension 2222 overlaps with the first overlap segment, avoiding the position where the sampling terminal first sub-component 211 is connected to the first overlap segment.

[0280] In some embodiments, the farthest distance between the two ends of the second extension 2222 along the third direction Z is less than the farthest distance between the two ends of the second main body 2221 along the third direction Z.

[0281] Since the second sub-component 221 of the sampling terminal is not located in the second extension 2222, even if the second extension overlaps with the first main body, it is not easy for the first sub-component 211 of the sampling terminal and the second sub-component 221 of the sampling terminal to interfere with each other. Moreover, the overlap area between the second extension 2222 and the first overlap section can be formed to be longer along the second direction Y, which is beneficial to improve the rigidity of the overlap part and the connection reliability and insulation reliability of the first power supply line and the second power supply line in the overlap part.

[0282] In some embodiments, the first overlap section further includes a partial sampling terminal first sub-component 211, at least one sampling terminal first sub-component 211 of the first overlap section being located on the side of the second extension 2222 along the third direction Z.

[0283] Optionally, one, two, three or more sampling terminals 211 of the first overlapping section may be located on the side of the second extension 2222 along the third direction Z.

[0284] Therefore, the second extension, the first overlapping section, and the sampling terminal first sub-component 211 of the first overlapping section can share a region along the second direction Y, which is beneficial for compactly arranging the sampling transmission first sub-component 21 and the sampling transmission second sub-component 22. Moreover, there is no need to specially adjust the arrangement position of some sampling terminals or the spacing between battery cells in the sampled battery cell assembly 10. Therefore, it is possible to reliably sample battery cell assemblies 10 with a long length along the second direction Y.

[0285] It is understandable that the sampling terminal first sub-component 211 of the first overlapping section may not be located on the side of the second extension 2222 along the third direction Z.

[0286] In some embodiments, as shown in Figures 8 and 10, in the first sampling transmission member 20a, the projections of the first overlapping segment, the second overlapping segment, and the first signal processing component 30a partially overlap each other when projected along the first direction X into the same projection plane; in the second sampling transmission member 20b, the projections of the first overlapping segment, the second overlapping segment, and the second signal processing component 30b partially overlap each other when projected along the first direction X into the same projection plane.

[0287] In some embodiments, as shown in FIG8, along the first direction X, the signal processing component 30 is located on one side of the sampling transmission component 20, the first sub-component 21 of the sampling transmission component is formed such that the first sub-component 213 of the communication connection portion is folded relative to the first sub-component body 2120 toward the side where the signal processing component 30 is located, and the second sub-component 22 of the sampling transmission component is formed such that the second sub-component 223 of the communication connection portion is folded relative to the second sub-component body 2220 toward the side where the signal processing component 30 is located.

[0288] In some embodiments, in the same sampling transmission device 20, the projections along the first direction X onto the same projection plane partially overlap with each other, including the projections of the first overlapping segment, the second overlapping segment, and the signal processing component 30.

[0289] Therefore, it is easy to realize that the first sub-component of the sampling transmission device and the second sub-component of the sampling transmission device share the signal processing component, and it is also beneficial to the miniaturization of the signal processing component.

[0290] Therefore, electrical connection between the first sub-component 213 of the communication connection section and the first overlapping section can be easily achieved, or electrical connection between the second sub-component 223 of the communication connection section and the second overlapping section can be easily achieved. Specifically, in the same sampling module, when the first sub-component 213 of the communication connection section is connected to the first overlapping section, the first sub-component 213 of the communication connection section can be bent along the first direction X relative to the first overlapping section, and then bent along the third direction Z to achieve electrical connection with the signal processing component 30. The first sub-component 213 of the communication connection section does not need to be bent along the second direction Y or have an additional length dimension along the second direction Y. Or, in the same sampling module, when the second sub-component 223 of the communication connection section is connected to the second overlapping section, the second sub-component 223 of the communication connection section can be bent along the first direction X relative to the second overlapping section, and then bent along the third direction Z to achieve electrical connection with the signal processing component 30. The second sub-component 223 of the communication connection section does not need to be bent along the second direction Y or have an additional length dimension along the second direction Y.

[0291] In some embodiments, as shown in FIG10, the portion where the first overlapping segment and the second overlapping segment overlap in the first sampling transmission member 20a and the portion where the first overlapping segment and the second overlapping segment overlap in the second sampling transmission member 20b are at least partially offset along the second direction Y.

[0292] In some embodiments, the portion where the first overlapping segment and the second overlapping segment overlap in the first sampling transmission member 20a are partially or completely offset from the portion where the first overlapping segment and the second overlapping segment overlap in the second sampling transmission member 20b along the second direction Y.

[0293] Therefore, the communication connection part in the first sampling transmission member 20a and the communication connection part in the second sampling transmission member 20b can be offset along the second direction Y, making it less likely that the communication connection part in the first sampling transmission member 20a and the communication connection part in the second sampling transmission member 20b will interfere with each other.

[0294] In some embodiments, as shown in Figures 8 and 10, along the first direction X, the first sampling transmission member 20a is located between the second sampling transmission member 20b and the first signal processing component 30a and the second signal processing component 30b. The first sampling transmission member 21 in the second sampling transmission member 20b further includes a first communication connection member 213, which is folded relative to the first sub-component body 2120 to which it is connected. The second sampling transmission member 22 in the second sampling transmission member 20b further includes a second communication connection member 223, which is folded relative to the second sub-component body 2220 to which it is connected. The first communication connection member 213 and the second communication connection member 223 in the second sampling transmission member 20b are folded to the same side of the second signal processing component 30b along the third direction Z to the side of the second signal processing component 30b away from the battery cell 1 along the first direction X and are both connected to the second signal processing component 30b.

[0295] In some embodiments, as shown in Figures 10 and 11, the first sub-component 213 of the communication connection portion includes a first communication connection segment 2131 and a second communication connection segment 2132 connected together. The first communication connection segment 2131 is located on the side of the signal processing component 30 opposite to the battery cell assembly 10 along the first direction X (e.g., the upper side shown in Figure 11) and is electrically connected to the signal processing component 30. The second communication connection segment 2132 connects the first communication connection segment 2131 and the first sub-component body 2120.

[0296] In some embodiments, the sampling transmission component second sub-component 22 includes a second sub-component body 2220 and a communication connection second sub-component 223. Along the first direction X, the second sub-component body 2220 is located between the signal processing component 30 and the battery cell assembly 10. The communication connection second sub-component 223 is folded relative to the second sub-component body 2220, thereby enabling the communication connection second sub-component 223 to connect with the signal processing component 30. Furthermore, a portion of the communication connection second sub-component 223 can be folded to the side of the signal processing component 30 facing away from the battery cell assembly 10 along the first direction X (e.g., the upper side shown in FIG8).

[0297] In some embodiments, as shown in FIG12, the second sub-component 223 of the communication connection portion includes a third communication connection segment 2231 and a fourth communication connection segment 2232 connected together. The third communication connection segment 2231 is located on the side of the signal processing component 30 opposite to the battery cell assembly 10 along the first direction X (e.g., the upper side shown in FIG8) and is electrically connected to the signal processing component 30. The fourth communication connection segment 2232 connects the third communication connection segment 2231 and the second sub-component body 2220.

[0298] In some embodiments, the first sampling transmission element 20a is located on the side of the second sampling transmission element 20b away from the battery cell assembly 10 along the first direction X, the second communication connection segment 2132 and the fourth communication connection segment 2232 in the second sampling transmission element 20b are located on the same side of the second signal processing component 30b along the third direction Z, and the second communication connection segment 2132 and the fourth communication connection segment 2232 in the first sampling transmission element 20a are located on the same side or both sides of the first signal processing component 30a along the third direction Z.

[0299] Since the first sampling transmission component 20a is located between the second sampling transmission component 20b and the first signal processing component 30a and the second signal processing component 30b along the first direction X, and the first sub-component 213 and the second sub-component 223 of the communication connection portion in the second sampling transmission component 20b are folded to the side of the second signal processing component 30b away from the battery cell assembly 10 along the first direction and are both connected to the second signal processing component 30b after the second sampling transmission component 20b is assembled, the assembly of the first sampling transmission component can be achieved by folding the second signal processing component 30b and the first sub-component and the second sub-component of the communication connection portion in the second sampling transmission component 20b.

[0300] In some embodiments, as shown in FIG8, the connection portion of the second signal processing component 30b to the first sub-component 213 of the communication connection portion and the connection portion of the second signal processing component 30b to the second sub-component 223 of the communication connection portion are offset along the second direction Y.

[0301] Therefore, the first sub-component 213 and the second sub-component 223 of the communication connection portion in the second sampling transmission component 20b can be staggered along the second direction Y, making it less likely that the first sub-component 213 and the second sub-component 223 of the communication connection portion in the second sampling transmission component 20b will interfere with each other.

[0302] In some embodiments, as shown in Figures 8 and 10, the first sampling transmission component 21 of the first sampling transmission component 20a further includes a first communication connection component 213, which is folded relative to the first component body 2120 to which it is connected. The second sampling transmission component 22 of the first sampling transmission component 20a further includes a second communication connection component 223, which is folded relative to the second component body 2220 to which it is connected. The first communication connection component 213 and the second communication connection component 223 of the first sampling transmission component 20a are folded relative to the same or different sides of the first signal processing component 30a along the third direction Z to the side of the first signal processing component 30a away from the battery cell 1 along the first direction and are both connected to the first signal processing component 30a.

[0303] The first sub-component 213 and the second sub-component 223 of the communication connection portion in the first sampling transmission component 20a are folded to the same side or different sides of the first signal processing component 30a along the third direction Z, and are both connected to the first signal processing component 30a along the first direction X away from the battery cell 1. This improves the folding freedom of the first sub-component and the second sub-component of the communication connection portion.

[0304] In some embodiments, as shown in FIG8 and FIG10, the connection portion of the first signal processing component 30a to the first sub-component 213 of the communication connection portion and the connection portion of the first signal processing component 30a to the second sub-component 223 of the communication connection portion are offset along the second direction Y.

[0305] Therefore, the first sub-component 213 and the second sub-component 223 of the communication connection portion in the first sampling transmission component 20a can be staggered along the second direction Y, making it less likely that the first sub-component 213 and the second sub-component 223 of the communication connection portion in the first sampling transmission component 20a will interfere with each other.

[0306] In some embodiments, as shown in Figures 8 and 9, the battery device further includes: a bracket 4, including a bracket body 41 and at least one support member 42 connected to the bracket body 41; the battery cell assembly 10, the bracket body 41, the sampling transmission member 20, and the signal processing member 30 are arranged sequentially along a first direction X, along the first direction X, a portion of the support member 42 is located on the side of the bracket body 41 opposite to the battery cell assembly 10, and a portion of the support member 42 passes through the sampling transmission member 20 and supports the signal processing member 30, the first direction X intersects with the second direction Y.

[0307] Optionally, the bracket 4 may include one, two, three or more support members 42.

[0308] Therefore, the bracket 4 can be used to support the sampling transmission component 20 and the signal processing component 30, and the structure is simple.

[0309] In some embodiments, as shown in Figures 8 and 9, along the first direction X, the circuit integration body 2020 is located between the support body 41 and the signal processing component 30, and the circuit integration body 2020 has at least one clearance hole 411; the support member passes through the clearance hole 411 to support the signal processing component 30.

[0310] In some embodiments, the first sub-component body has at least one clearance hole 411, and the support member passes through the clearance hole 411 to support the signal processing component 30. The clearance hole 411 may be formed by a recess in the third direction Z of the side of the first sub-component body, or the clearance hole 411 may be formed by an opening in the middle position of the first sub-component body.

[0311] In some embodiments, the second sub-component body has at least one clearance hole 411, and the support member 42 supports the signal processing component 30 through the clearance hole 411. The clearance hole 411 may be formed by a recess in the third direction Z of the side of the second sub-component body, or the clearance hole 411 may be formed by an opening in the middle position of the second sub-component body.

[0312] This disclosure does not specifically limit the shape and size of the clearance hole 411, as long as it allows part of the support member to pass through the circuit integration body 2020.

[0313] In some embodiments, the support includes a support base 421 connected to the bracket body 41 and a through portion 422 connected to the support base 421 on the side opposite to the bracket body 41.

[0314] In some embodiments, along the first direction X, the support base 421 abuts against the signal processing component 30, and the through portion 422 passes through the signal processing component 30; and / or along the first direction X, the support base 421 abuts against the signal processing component 30, and the through portion 422 passes through the signal processing component 30 and the first sub-component 213 and / or the second sub-component 223 of the communication connection portion in sequence, thereby not only supporting the signal processing component 30, but also positioning and connecting the first sub-component 213 and / or the second sub-component 223 of the communication connection portion to the signal processing component 30 by means of the through portion 422.

[0315] In some embodiments, as shown in Figures 8 and 9, the signal processing component 30 is provided with support members 42 at both ends along the third direction Z, and multiple support members 42 are staggered along the first direction X, while the second direction Y, the first direction X and the third direction Z intersect each other.

[0316] Therefore, the support can provide relatively stable support for the signal processing component 30.

[0317] A second aspect of this disclosure provides an electrical device that includes the battery device described above.

[0318] Since the power-consuming device includes the aforementioned battery device, the sampling module's acquisition accuracy can be improved or the probability of missing physical parameters can be reduced.

[0319] The following is a detailed description of a specific example of an embodiment of the present disclosure with reference to Figures 4 to 7.

[0320] The battery device includes multiple battery cell assemblies 10, each comprising multiple battery cells 1. The battery device includes a sampling system comprising at least two sampling modules 2, namely a first sampling module 2a and a second sampling module 2b, which sample the same physical quantity (e.g., voltage, temperature) of the same battery cell 1.

[0321] The first sampling module 2a includes a first sampling transmission component 20a and a first signal processing component 30a. The first sampling transmission component 20a includes a first sampling terminal 201a and a first line integration component 202a. The first line integration component 202a includes a first line integration component body 2020a and a first communication connection part 203a that are electrically connected. The first sampling terminal 201a is electrically connected to the battery cell 1, the first line integration component body 2020a is electrically connected to the first sampling terminal 201a, and the first communication connection part 203a is electrically connected to the first signal processing component 30a.

[0322] The second sampling module 2b includes a second sampling transmission component 20b and a second signal processing component 30b. The second sampling transmission component 20b includes a second sampling terminal 201b and a second line integration component 202b. The second line integration component 202b includes a second line integration component body 2020b electrically connected to a second communication connection part 203b. The second sampling terminal 201b is electrically connected to the battery cell 1, the second line integration component 202b is electrically connected to the second sampling terminal 201b, and the second communication connection part 203b is electrically connected to the second signal processing component 30b.

[0323] The connection structure between the communication connection unit and the signal processing component will be explained. Taking a sampling transmission component constructed using a flexible circuit board as an example, a portion of the sampling transmission component is arranged on the side of the signal processing component 30 along the first direction X, close to the battery cell assembly 10. The sampling transmission component is partially folded and overlapped with the signal processing component 30. The interface covering film at the overlap between the sampling transmission component and the signal processing component 30 has an opening, exposing a copper conductor. The interface at the overlap between the signal processing component 30 and the sampling transmission component also exposes a conductor. The exposed conductors (electrical lines) of the sampling transmission component and the exposed conductors of the signal processing component 30 are connected by solder paste. The solder paste connection can be achieved through thermoforming or laser welding. There are two characteristic circular holes at the overlap position between the sampling transmission component and the signal processing component 30, and the signal processing component 30 also has corresponding openings for alignment.

[0324] The same busbar 5 is electrically connected to a first sampling terminal 201a and a second sampling terminal 201b, respectively, wherein the first sampling terminal 201a is connected to one side of the busbar 5, and the second sampling terminal 201b is connected to the other side of the busbar 5.

[0325] The above embodiments are merely illustrative of the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure, and all should be covered within the scope of this disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of this disclosure.

Claims

1. A battery device, wherein, include: At least one battery cell assembly, comprising multiple battery cells; At least one sampling system, the sampling system comprising at least two sampling modules, the at least two sampling modules in the same sampling system comprising a first sampling module and a second sampling module, the first sampling module and the second sampling module sampling the same physical quantity for the same battery cell.

2. The battery device according to claim 1, wherein, The first sampling module includes a first sampling transmission component and a first signal processing component. The first sampling transmission component is electrically connected to the battery cell, and the first signal processing component processes the electrical signals of the battery cell collected by the first sampling transmission component. The second sampling module includes a second sampling transmission component and a second signal processing component. The second sampling transmission component is electrically connected to the battery cell, and the second signal processing component processes the electrical signals of the battery cell collected by the second sampling transmission component. The first sampling transmission device and the second sampling transmission device are electrically connected to the same battery cell.

3. The battery device according to claim 2, wherein, It also includes a battery management system, The battery management system includes at least two main control modules, including a first main control module and a second main control module. The first signal processing component is communicatively connected to the first main control module, and the second signal processing component is communicatively connected to the second main control module.

4. The battery device according to claim 3, wherein, The battery device includes at least two sampling systems, each of which collects physical quantities of at least two sets of battery cell components. At least two of the first signal processing components in the at least two sampling systems are communicatively connected to the first main control module, and at least two of the second signal processing components in the at least two sampling systems are communicatively connected to the second main control module.

5. The battery device according to claim 3 or 4, wherein, The first sampling transmission device includes a first sampling terminal and a first line integration component. The first sampling terminal is electrically connected to the battery cell, and the first line integration component is electrically connected to the first sampling terminal and the first signal processing component. The second sampling transmission component includes a second sampling terminal and a second line integration component. The second sampling terminal is electrically connected to the battery cell, and the second line integration component is electrically connected to the second sampling terminal and the second signal processing component.

6. The battery device according to claim 5, wherein, The first line integration component includes a first line integration component body and a first communication connection portion electrically connected, the first communication connection portion being connected to the first signal processing component; the second line integration component includes a second line integration component body and a second communication connection portion electrically connected, the second communication connection portion being connected to the second signal processing component, the first line integration component body and the second line integration component body being stacked in a first direction.

7. The battery device according to claim 5, wherein, The battery device also includes a busbar that connects different battery cells, and at least one first sampling terminal and at least one second sampling terminal are electrically connected to the same side of the same busbar. or, At least one of the first sampling terminals and at least one of the second sampling terminals are respectively connected to two opposite sides of the same busbar.

8. The battery device according to claim 6, wherein, Along the first direction, the first sampling terminal and the second sampling terminal are respectively connected to two opposite sides of the first circuit assembly body and the second circuit assembly body.

9. The battery device according to claim 6 or 8, wherein, In the same sampling system, the first signal processing component and the second signal processing component are arranged along a second direction, which intersects the first direction.

10. The battery device according to claim 9, wherein, Along the first direction, the first signal processing component and the second signal processing component are located on the same side of the first circuit integration body and the second circuit integration body. The first communication connection portion folds towards the side where the first signal processing component is located relative to the body of the first line integration component. The second communication connection portion is folded toward the side where the second signal processing component is located relative to the body of the second line integration component.

11. The battery device according to claim 10, wherein, The first line integration component body is located between the second line integration component body and the first signal processing component and the second signal processing component. The number of the second communication connection parts is at least two. The second communication connection parts are all located on the same side of the second signal processing component along a preset direction, and the preset direction is arranged to intersect with the first direction.

12. The battery device according to claim 10 or 11, wherein, The first line integration component body is located between the second line integration component body and the first signal processing component and the second signal processing component. The number of the first communication connection parts is at least two. At least one of the first communication connection parts is connected to each of the opposite sides of the first signal processing component along a preset direction. The preset direction is arranged to intersect with the first direction.

13. The battery device according to claim 11 or 12, wherein, At least two of the first communication connections connected to the first signal processing component are staggered along the second direction, and / or At least two of the second communication connections connected to the second signal processing component are staggered along the second direction.

14. The battery device according to any one of claims 10 to 13, wherein, Projecting along the first direction into the same projection plane, the projection of the first communication connection part overlaps with the projection of the first signal processing component; Projecting along the first direction onto the same projection plane, the projection of the second communication connection overlaps with the projection of the second signal processing component.

15. The battery device according to any one of claims 10 to 14, wherein, Projecting along the first direction into the same projection plane, the projections of the first communication connection, the first signal processing component, and the first line integration body overlap sequentially. Projecting along the first direction onto the same projection plane, the projections of the second communication connection, the second signal processing component, and the second line integration body overlap sequentially.

16. The battery device according to any one of claims 10 to 15, wherein, The first communication connection part is welded to the first signal processing component, and the second communication connection part is welded to the second signal processing component.

17. The battery device according to any one of claims 2 to 16, wherein, The battery cell assembly includes a plurality of first battery cells and a plurality of second battery cells arranged along a second direction. The same sampling system includes multiple sampling transmission components, including a first sampling transmission component and a second sampling transmission component. Each sampling transmission component extends along a second direction and includes a first sampling transmission component and a second sampling transmission component. The first and second sampling transmission components are arranged along the second direction. The first sampling transmission component is electrically connected to the first battery cell, and the second sampling transmission component is electrically connected to the second battery cell. The first sub-component of the sampling transmission component has a first overlapping section on the side of the second sub-component of the sampling transmission component along the second direction, and the second sub-component of the sampling transmission component has a second overlapping section on the side of the first sub-component of the sampling transmission component along the second direction. Along the first direction, the first overlapping section and the second overlapping section overlap each other and are electrically connected. The second direction intersects the first direction.

18. The battery device according to claim 17, wherein, The sampling transmission component includes sampling terminals and a circuit integration component connected to the sampling terminals. The circuit integration component includes a circuit integration component body and electrical wiring. The sampling terminals include a first sampling terminal sub-component and a second sampling terminal sub-component. The circuit integration component includes a first circuit integration component and a second circuit integration component. The first sub-component of the sampling transmission component includes a first sub-component of sampling terminals and a first sub-component of circuit integration. The first sub-component of circuit integration includes a first sub-component body and a first electrical circuit. The first electrical circuit is located on opposite sides of the first sub-component body along the first direction. The first electrical circuit includes a first communication line and a first power supply line. The first sub-component of sampling terminals is electrically connected to the first battery cell and the first communication line. The second sub-component of the sampling transmission component includes a second sub-component of sampling terminals and a second sub-component of circuit integration. The second sub-component of circuit integration includes a second sub-component body and a second electrical circuit. The second electrical circuit is located on opposite sides of the second sub-component body along the first direction. The second electrical circuit includes a second communication line and a second power supply line. The second sub-component of sampling terminals is electrically connected to the second battery cell and the second communication line. The portion of the first power supply line located at the first overlapping section is electrically connected to the portion of the second power supply line located at the second overlapping section.

19. The battery device according to claim 18, wherein, The first sub-component body includes a first main body portion and a first extension portion connected along the second direction. The first overlapping section includes the first extension portion. The sampling terminal first sub-component is connected to the side of the first main body portion along a third direction, which intersects both the first direction and the second direction. The second sub-component body includes a second main body portion, and the second overlapping section includes a portion of the second main body portion that is close to the first sub-component body along the second direction. The sampling terminal second sub-component is connected to the second main body portion. At least the first extension portion of the first sub-component body overlaps with the second main body portion of the second overlapping segment.

20. The battery device according to claim 19, wherein, The second overlap section also includes a portion of the second sampling terminal sub-component, at least one of the second sampling terminal sub-components of the second overlap section being located on the side of the first extension in a third direction.

21. The battery device according to claim 20, wherein, The first sub-component body includes a first main body portion, and the first overlapping section includes a portion of the first main body portion that is close to the second sub-component body along the second direction. The sampling terminal first sub-component is electrically connected to the first main body portion. The second sub-component body includes a second main body portion and a second extension portion connected along the second direction. The second overlapping segment includes the second extension portion. At least the second extension portion of the second sub-component body overlaps with the first main body portion of the first overlapping segment. The sampling terminal second sub-component is connected to the side of the second main body portion along a third direction. The third direction intersects both the first direction and the second direction.

22. The battery device according to claim 21, wherein, The first overlap section also includes a portion of the first sampling terminal sub-component, at least one of the first sampling terminal sub-components of the first overlap section being located on the side of the second extension in a third direction.

23. The battery device according to any one of claims 17 to 22, wherein, In the first sampling transmission device, the projections along the first direction onto the same projection plane are partially overlapped by the projections of the first overlapping segment, the second overlapping segment, and the first signal processing component. In the second sampling transmission component, projections are made along the first direction onto the same projection plane, and the projections of the first overlapping segment, the second overlapping segment, and the second signal processing component partially overlap each other.

24. The battery device according to claim 23, wherein, The portion where the first overlapping segment and the second overlapping segment of the first sampling transmission component overlap are at least partially offset from the portion where the first overlapping segment and the second overlapping segment of the second sampling transmission component overlap along the second direction.

25. An electrical appliance, wherein, Includes the battery device according to any one of claims 1 to 24.

26. The electrical appliance according to claim 25, wherein, The electrical equipment includes aircraft.

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