Battery apparatus and electric device

Abstract

Disclosed in the present disclosure are a battery apparatus and an electric device. The battery apparatus comprises a battery cell assembly, a first busbar and a sampling system, wherein the battery cell assembly comprises a first battery cell and a second battery cell. The first busbar electrically connects the first battery cell and the second battery cell. The sampling system comprises a first sampling module and a second sampling module, wherein the first sampling module and the second sampling module are both electrically connected to the first busbar.

Description

Battery devices and electrical equipment Technical Field

[0001] This disclosure relates to the field of battery technology, and more particularly to a battery device and an electrical appliance. Background Technology

[0002] New energy batteries are being used more and more widely in daily life and industry. For example, new energy vehicles equipped with batteries are already widely used. In addition, batteries are being used more and more in the field of energy storage.

[0003] In related technologies, in order to ensure the safe operation of the battery device, a sampling module is installed inside the battery device. The sampling module is used to collect the electrical signals of the individual battery cells in the battery device, and the working status of the battery device is determined based on the electrical signals.

[0004] However, if the sampling module malfunctions, the battery device will have safety issues, thus the battery device has low safety performance. Summary of the Invention

[0005] To address the aforementioned technical problems, this disclosure provides a battery device and an electrical appliance to improve the safety performance of the battery device.

[0006] This disclosure is achieved through the following technical solution.

[0007] This disclosure provides a battery device, including a battery cell assembly, a first busbar, and a sampling system. The battery cell assembly includes a first battery cell and a second battery cell. The first busbar is electrically connected to the first battery cell and the second battery cell. The sampling system includes a first sampling module and a second sampling module, both of which are electrically connected to the first busbar.

[0008] In the technical solution of this disclosure embodiment, since the first busbar is electrically connected to the first battery cell and the second battery cell, the first battery cell and the second battery cell can be connected in series, in parallel or in a mixed manner through the first busbar.

[0009] Since both the first sampling module and the second sampling module are electrically connected to the first busbar, both the first sampling module and the second sampling module can collect the electrical signals of the battery cells electrically connected to the first 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.

[0010] The battery device disclosed herein can achieve redundant design for the acquisition of electrical signals from individual battery cells by setting up a first sampling module and a second sampling module, thereby improving the safety performance of the battery device. Attached Figure Description

[0011] 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:

[0012] Figure 1 is a schematic diagram of a sampling system, a first busbar, and signal acquisition of a battery cell assembly provided in some embodiments of this disclosure.

[0013] Figure 2 is an exploded view of a first sampling module, a second sampling module, and a first busbar provided in some embodiments of this disclosure;

[0014] Figure 3 is a bottom view of the sampling system, the first busbar, and the battery cell assembly in a series configuration according to some embodiments of this disclosure.

[0015] Figure 4 is a magnified view of a portion of the region A1-A2 in Figure 3;

[0016] Figure 5 is a top view of the sampling system, the first busbar, and the battery cell assembly in a hybrid configuration according to some embodiments of this disclosure.

[0017] Figure 6 is a magnified view of a portion of the region B1-B2 in Figure 5;

[0018] Figure 7 is a bottom view of a battery device provided in some embodiments of this disclosure;

[0019] Figure 8 is a top view schematic diagram of a battery device provided in some embodiments of this disclosure;

[0020] Figure 9 is an exploded view of the first acquisition module and the second acquisition module provided in some embodiments of this disclosure;

[0021] Figure 10 is another schematic diagram of the sampling system, first busbar, and battery cell assembly signal acquisition provided in some embodiments of this disclosure;

[0022] Figure 11 is a side view of a sampling system, a first busbar, and a battery cell provided in some embodiments of this disclosure;

[0023] Figure 12 is a side view of a first sampling transmission device and a second sampling transmission device provided in some embodiments of the present disclosure with respect to a first bus device;

[0024] Figure 13 is a schematic diagram of the external structure of a first sampling transmission device provided in some embodiments of the present disclosure;

[0025] Figure 14 is a schematic diagram of the external structure of a second sampling transmission device provided in some embodiments of this disclosure;

[0026] Figure 15 is another schematic diagram of the sampling system, the first busbar, and the signal acquisition of the battery cell assembly provided in some embodiments of this disclosure;

[0027] Figure 16 is another side view of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure with respect to the first busbar;

[0028] Figure 17 is another side view of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure with respect to the first busbar;

[0029] Figure 18 is another side view of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure with respect to the first busbar;

[0030] Figure 19 is another side view of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure with respect to the first busbar;

[0031] Figure 20 is another side view of the first sampling transmission device and the second sampling transmission device provided in some embodiments of this disclosure with respect to the first busbar;

[0032] Figure 21 is a magnified view of part A in Figure 13;

[0033] Figure 22 is a magnified view of part B in Figure 14;

[0034] Figure 23 is another schematic diagram of the sampling system, the first busbar, and the signal acquisition of the battery cell assembly provided in some embodiments of this disclosure.

[0035] Explanation of reference numerals in the attached drawings: 01-Battery device; 1-Battery cell assembly; 11-First battery cell; 12-Second battery cell; M1-First parallel connection; M2-Second parallel connection; 2-First busbar; 3-Sampling system; 31-First sampling module; 311-First sampling transmission component; 3111-First sampling terminal; K1-First voltage sampling terminal; K2-First temperature sampling unit; 3112-First circuit integration component; W1-First buffer hole; W2-First elastic sheet; a1-First alignment hole; 312-First signal... 3121 - First rigid circuit board; 3122 - First processing chip; 32 - Second sampling module; 321 - Second sampling transmission component; 3211 - Second sampling terminal; N1 - Second voltage sampling terminal; N2 - Second temperature sampling unit; 3212 - Second circuit integration component; L1 - Second buffer hole; L2 - Second elastic sheet; a2 - Second alignment hole; 322 - Second signal processing component; 3221 - Second rigid circuit board; 3222 - Second processing chip; 33 - Calibration module; 4 - Separator. Detailed Implementation

[0036] 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.

[0037] 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 be limiting of this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and foregoing description of the drawings of this disclosure are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of this disclosure, technical terms such as "first," "second," and "third" 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0044] The following is a detailed description of this disclosure.

[0045] Currently, new energy batteries are being used more and more widely in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0046] Based on this, the present disclosure provides an electrical device that includes a battery device for providing electrical energy. Such a battery device can provide electrical energy to the electrical device, thereby ensuring the normal operation and function of the electrical device.

[0047] In some embodiments, the electrical equipment includes an aircraft. By providing a battery device on the aircraft, the battery device can provide electrical power to the aircraft, enabling it to fly.

[0048] In this context, "aircraft" generally refers to any device that flies within or outside the atmosphere (space), including both atmospheric aircraft and spacecraft. Aircraft can include airplanes, airships, etc., and for example, low-altitude aircraft, eVTOL (electric vertical take-off and landing) aircraft, commuter aircraft, and regional jets. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft.

[0049] Of course, in other embodiments, the electrical equipment may also refer to various suitable equipment such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles or ships.

[0050] In related technologies, in order to ensure the safe operation of the battery device, a sampling module is installed inside the battery device. The sampling module is used to collect the electrical signals of the individual battery cells in the battery device, and the working status of the battery device is determined based on the electrical signals.

[0051] However, if the sampling module malfunctions, the battery device will have safety issues, thus the battery device has low safety performance.

[0052] Furthermore, if battery devices with lower safety performance in related technologies are installed on moving electrical equipment (such as aircraft and electric vehicles), significant safety problems may arise if the battery device malfunctions and is not detected in time.

[0053] Based on this, as shown in Figures 1 and 2, this disclosure provides a battery device 01, which includes a battery cell assembly 1, a first busbar 2, and a sampling system 3. The battery cell assembly 1 includes a first battery cell 11 and a second battery cell 12. The first busbar 2 is electrically connected to the first battery cell 11 and the second battery cell 12. The sampling system 3 includes a first sampling module 31 and a second sampling module 32, both of which are electrically connected to the first busbar 2.

[0054] For ease of understanding, we define the thickness direction of a battery cell as the X direction, the width direction of a battery cell (the arrangement direction of the positive and negative terminals of the battery cell) as the Y direction, and the height direction of a battery cell as the Z direction.

[0055] It is understood that both the first battery cell 11 and the second battery cell 12 are battery cells, and the first sampling module 31 can collect signals such as voltage and temperature of the battery cells. The second sampling module 32 can collect signals such as voltage and temperature of the battery cells.

[0056] Depending on the different electrical connection methods of multiple battery cells, the number of battery cells connected to the first busbar 2 also varies. The connection methods are described below in series and mixed connection modes.

[0057] In some examples, as shown in Figures 3 and 4, the first battery cell 11 and the second battery cell 12 are arranged alternately along the thickness direction (X direction) of the battery cell. In the direction perpendicular to the paper, the first battery cell 11 and the second battery cell 12 are located below the first busbar 2 and are thus obscured. The positive terminals of adjacent first battery cells 11 and the negative terminals of adjacent second battery cells 12 are located on the same side of the thickness direction of the battery cell. The same first busbar 2 connects the positive terminals of adjacent first battery cells 11 and the negative terminals of adjacent second battery cells 12. This arrangement is repeated to achieve series connection of multiple battery cells within a single battery cell assembly 1.

[0058] In this case, each busbar corresponding to the same battery cell assembly 1 is electrically connected to the first sampling module 31 and the second sampling module 32. In the direction perpendicular to the paper, the first sampling module 31 and the second sampling module 32 shown in Figures 3 and 4 are stacked sequentially. Therefore, only one sampling module (the first sampling module 31 or the second sampling module 32) located on the surface can be observed, thereby realizing the acquisition of electrical signals from multiple battery cells.

[0059] In other examples, as shown in Figures 5 and 6, along the thickness direction (X direction) of the battery cells, multiple first battery cells 11 arranged sequentially form a first parallel unit M1, and multiple second battery cells 12 arranged sequentially form a second parallel unit M2. Then, the multiple first parallel units M1 and multiple second parallel units M2 are arranged alternately. Figures 5 and 6 show two first battery cells 11 connected in parallel to form a first parallel unit M1, and two second battery cells 12 connected in parallel to form a second parallel unit M2. In the direction perpendicular to the paper, the first parallel units M1 and M2 are located behind the first busbar 2 and are therefore obscured. A first busbar 2 connects all the positive terminals of the multiple first battery cells 11 within a first parallel unit M1 to all the negative terminals of the multiple second battery cells 12 within a second parallel unit M2. This arrangement is repeated to achieve mixed connection of multiple battery cells using the first busbar 2.

[0060] In some examples, as shown in Figures 3 and 5, the number of battery cell components 1 in a battery device 01 can be one, and the corresponding number of the first sampling module 31 and the second sampling module 32 can also be one each.

[0061] In other examples, as shown in Figures 7 (series) and 8 (hybrid), the number of battery cell assemblies 1 within a battery device 01 can also be multiple. These multiple battery cell assemblies 1 are arranged sequentially along a direction perpendicular to the X-direction and parallel to the bottom surface of the battery cell (Y-direction). Correspondingly, the number of first sampling modules 31 and second sampling modules 32 are also multiple. Multiple first sampling modules 31 correspond to multiple battery cell assemblies 1, and multiple second sampling modules 32 correspond to multiple battery cell assemblies 1. Figures 7 and 8 show two battery cell assemblies 1, and correspondingly, two first sampling modules 31 and two second sampling modules 32.

[0062] In some examples, the battery cell assembly 1 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 cell assemblies 1 together with cable ties.

[0063] In some examples, the battery device 01 also includes a housing assembly, with the battery cell assembly 1 and the first busbar 2 both disposed inside the housing assembly, and the sampling module at least partially disposed within the housing assembly. The housing assembly provides support and protection.

[0064] With the above configuration, since the first busbar 2 is electrically connected to the first battery cell 11 and the second battery cell 12, the first battery cell 11 and the second battery cell 12 can be connected in series, in parallel, or in a mixed configuration through the first busbar 2.

[0065] Since both the first sampling module 31 and the second sampling module 32 are electrically connected to the first busbar 2, both the first sampling module 31 and the second sampling module 32 can collect the electrical signals of the battery cells electrically connected to the first busbar 2. Thus, even if the first sampling module 31 fails, the second sampling module 32 can still work normally to collect the electrical signals of the battery cells and monitor the working status of the battery cells. Alternatively, even if the second sampling module 32 fails, the first sampling module 31 can still work normally to collect the electrical signals of the battery cells and monitor the working status of the battery cells.

[0066] The battery device 01 disclosed herein can achieve redundant design for the acquisition of electrical signals from individual battery cells by setting up a first sampling module 31 and a second sampling module 32, thereby improving the safety performance of the battery device 01.

[0067] Furthermore, if the battery device 01 with high safety performance disclosed herein is installed on some moving electrical equipment, the electrical safety of the electrical equipment is improved, and the safety performance of the electrical equipment is enhanced.

[0068] In some embodiments, as shown in Figures 4 and 6, the first sampling module 31 and the second sampling module 32 are both located between the positive and negative terminals of the battery cell.

[0069] In other words, the first sampling module 31 and the second sampling module 32 are both located between the first busbars 2 on the left and right sides in Figures 4 and 6.

[0070] With the above arrangement, in the direction perpendicular to the paper, since the terminal post of the battery cell has a certain height, there is space between the positive and negative terminals of the battery cell. Thus, by placing at least a portion of the first sampling module 31 and the second sampling module 32 within this space, the utilization rate of the internal space of the battery device 01 can be improved, thereby increasing the energy density of the battery device 01.

[0071] In some embodiments, as shown in Figures 2-8, the first sampling module 31 and the second sampling module 32 have identical structures. This means that only one type of sampling module needs to be manufactured, improving the ease of processing and manufacturing.

[0072] It is understandable that although the first sampling module 31 and the second sampling module 32 have the same structure, they can be set as needed during actual use, such as flipping or setting an angle.

[0073] In some embodiments, as shown in Figures 9 and 10, the first sampling module 31 includes a first sampling transmission element 311 and a first signal processing component 312, the first signal processing component 312 processing the electrical signals of the battery cells collected by the first sampling transmission element 311. The second sampling module 32 includes a second sampling transmission element 321 and a second signal processing component 322, the second signal processing component 322 processing the electrical signals of the battery cells collected by the second sampling transmission element 321. The first bus 2 is electrically connected to both the first sampling transmission element 311 and the second sampling transmission element 321.

[0074] With the above configuration, the first sampling transmission unit 311 can collect the electrical signals of the battery cells and transmit them to the first signal processing component 312 for processing. The second sampling transmission unit 321 can collect the electrical signals of the battery cells and transmit them to the second signal processing component 322, thereby achieving redundancy design. The arrangement of the first sampling transmission unit 311 and the second sampling transmission unit 321 facilitates the placement of the first signal processing component 312 and the second signal processing component 322, thus simplifying spatial layout.

[0075] In some embodiments, as shown in FIG11, the first sampling transmission element 311 and the second sampling transmission element 321 are both located on the same side of the battery cell along the first direction.

[0076] In some examples, as shown in Figure 11, the first direction (Z direction) is the height direction of the battery cell, and both the first sampling transmission element 311 and the second sampling transmission element 321 are located on the same side as the battery cell terminal. This not only facilitates the electrical connection between the first sampling transmission element 311 and the battery cell terminal, but also facilitates the internal spatial layout of the battery device 01. Similarly, this not only facilitates the electrical connection between the second sampling transmission element 321 and the battery cell terminal, but also facilitates the internal spatial layout of the battery device 01.

[0077] The above configuration facilitates the installation of the first sampling transmission element 311 and the second sampling transmission element 321, the internal spatial layout of the battery device 01, and the electrical connection between the first sampling transmission element 311, the second sampling transmission element 321 and the first busbar 2.

[0078] In some embodiments, as shown in FIG11, at least a portion of the structure of the first sampling transmission element 311 and at least a portion of the structure of the second sampling transmission element 321 are stacked along a first direction.

[0079] The first sampling transmission element 311 may be located between the battery cell and the second sampling transmission element 321, or the first sampling transmission element 311 may be located on the side of the second sampling transmission element away from the battery cell.

[0080] In some examples, as shown in Figure 11, the first direction is the height direction of the battery cell, i.e., the Z direction, and both the first sampling transmission element 311 and the second sampling transmission element 321 are located on the same side as the battery cell terminal. This facilitates the spatial layout inside the battery device 01.

[0081] With the above configuration, the first sampling transmission element 311 and the second sampling transmission element 321 are stacked, which can save space in other directions of the battery device 01 except for the first direction, and facilitate the spatial layout of the battery device 01.

[0082] Of course, in other examples, the first sampling transmission element 311 and the second sampling transmission element 321 may also be located in the same plane.

[0083] In some embodiments, as shown in Figures 12-15, the first sampling transmission device 311 includes a first sampling terminal 3111 and a first line integration device 3112. The first sampling terminal 3111 is connected to the first bus 2, and the first line integration device 3112 connects the first sampling terminal 3111 and the first signal processing component 312. The second sampling transmission device 321 includes a second sampling terminal 3211 and a second line integration device 3212. The second sampling terminal 3211 is connected to the first bus 2, and the second line integration device 3212 connects the second sampling terminal 3211 and the second signal processing component 322. The first line integration device 3112 and the second line integration device 3212 are stacked in a first direction.

[0084] The first circuit integration component 3112 can be in the form of an FPC board or a wire harness, etc. The second circuit integration component 3212 can also be in the form of an FPC board or a wire harness, etc.

[0085] With the above configuration, the electrical signals of the battery cells on the first busbar 2 are transmitted to the first line integration component 3112 via the first sampling terminal 3111, and then to the first signal processing component 312 for processing. The arrangement of the first line integration component 3112 facilitates the placement of the first sampling terminal 3111 and the first signal processing component 312, thus simplifying the internal spatial layout of the battery device 01. Similarly, the electrical signals of the battery cells on the first busbar 2 are also transmitted to the second line integration component 3212 via the second sampling terminal 3211, and then to the second signal processing component 322 for processing. The arrangement of the second line integration component 3212 also facilitates the placement of the second sampling terminal 3211 and the second signal processing component 322, thus simplifying the internal spatial layout of the battery device 01. Furthermore, since the first line integration component 3112 and the second line integration component 3212 are stacked in the first direction, the internal spatial layout of the battery device 01 is also facilitated.

[0086] In some embodiments, as shown in Figures 12 and 15, the first sampling transmission device 311 includes a first sampling terminal 3111 and a first line integration device 3112. The first sampling terminal 3111 is connected to the first bus 2, and the first line integration device 3112 connects the first sampling terminal 3111 and the first signal processing component 312. The second sampling transmission device 321 includes a second sampling terminal 3211 and a second line integration device 3212. The second sampling terminal 3211 is connected to the first bus 2, and the second line integration device 3212 connects the second sampling terminal 3211 and the second signal processing component 322. As shown in Figure 12, the first sampling terminal 3111 and the second sampling terminal 3211 are stacked in a first direction. Alternatively, as shown in Figure 16, the first sampling terminal 3111 and the second sampling terminal 3211 are staggered in a second direction, which is perpendicular to the first direction.

[0087] In some examples, as shown in Figure 16, the first direction is the Z direction and the second direction is the X direction. This makes it easier for the first sampling terminal 3111 and the second sampling terminal 3211 to be electrically connected to the same first busbar 2, which facilitates spatial layout.

[0088] With the above configuration, the electrical signals of the battery cells on the first busbar 2 are transmitted to the first circuit integration component 3112 via the first sampling terminal 3111, and then to the first signal processing component 312 for processing. The arrangement of the first circuit integration component 3112 facilitates the placement of the first sampling terminal 3111 and the first signal processing component 312, thus simplifying the internal spatial layout of the battery device 01. Similarly, the electrical signals of the battery cells on the first busbar 2 are also transmitted to the second circuit integration component 3212 via the second sampling terminal 3211, and then to the second signal processing component 322 for processing. The arrangement of the second circuit integration component 3212 also facilitates the placement of the second sampling terminal 3211 and the second signal processing component 322, thus simplifying the internal spatial layout of the battery device 01.

[0089] Furthermore, when the first sampling terminal 3111 and the second sampling terminal 3211 are stacked in the first direction, space in the battery device 01 in directions other than the first direction can be saved. Alternatively, when the first sampling terminal 3111 and the second sampling terminal 3211 are staggered in the second direction, space in the battery device 01 in the first direction can be saved.

[0090] In some embodiments, as shown in FIG12, along a first direction, the first sampling terminal 3111 and the second sampling terminal 3211 are respectively connected to two opposite sides of the first busbar 2.

[0091] In some examples, the first direction is the Z direction. Since the thickness direction of the first busbar 2 is also the Z direction, this makes it easier for the first sampling terminal 3111 and the second sampling terminal 3211 to contact and connect with the first busbar 2.

[0092] In some examples, along the first direction, the first sampling terminal 3111 and the second sampling terminal 3211 located on opposite sides of the first busbar 2 may completely overlap, partially overlap, or not overlap.

[0093] With the above settings, the first sampling terminal 3111 and the second sampling terminal 3211 do not affect each other when connected to the first busbar 2, which facilitates the setting of the first sampling terminal 3111 and the second sampling terminal 3211, and facilitates the first sampling terminal 3111 and the second sampling terminal 3211 to be electrically connected to the first busbar 2 individually.

[0094] In some embodiments, as shown in FIG12, along a first direction, the first sampling terminal 3111 and the second sampling terminal 3211 are respectively connected to two opposite sides of the first circuit assembly 3112 and the second circuit assembly 3212.

[0095] Thus, in the first direction, the distance between the first sampling terminal 3111 and the second sampling terminal 3211 is greater, which can avoid mutual interference between the first sampling terminal 3111 and the second sampling terminal 3211, ensure the independence of the first sampling module 31 and the second sampling module 32, and ensure the normal operation of their respective acquisition work.

[0096] Of course, in other embodiments, as shown in FIG17, along the first direction, the first sampling terminal 3111 is located between the first line integration component 3112 and the second line integration component 3212, and the second sampling terminal 3211 is located between the first line integration component 3112 and the second line integration component 3212. In this way, the first sampling terminal 3111 and the second sampling terminal 3211 can each be electrically connected to the first busbar 2.

[0097] In other embodiments, as shown in FIG18, along a first direction, the first sampling terminal 3111 is located between the first circuit integration 3112 and the second circuit integration 3212, and the second sampling terminal 3211 is located on the side surface of the second circuit integration 3212 opposite to the first circuit integration 3112. This also allows for electrical connection between the first sampling terminal 3111 and the second sampling terminal 3211 and the first busbar 2.

[0098] In other examples, as shown in Figure 19, along the first direction, the first sampling terminal 3111 is located on the side surface of the first circuit integration 3112 facing away from the second circuit integration 3212, and the second sampling terminal 3211 is located between the first circuit integration 3112 and the second circuit integration 3212. This also allows for electrical connection between the first sampling terminal 3111 and the second sampling terminal 3211 and the first busbar 2.

[0099] In some embodiments, as shown in FIG20, the battery device 01 further includes a separator 4. Along the first direction, a separator 4 is provided between the first sampling transmission member 311 and the second sampling transmission member 321. The separator 4 is an insulating member.

[0100] In some examples, the separator 4 is a sheet structure, which can save space in the first direction and improve space utilization.

[0101] In some examples, the separator 4 is made of foam adhesive. This allows the first sampling transmission element 311 and the second sampling transmission element 321 to be flat.

[0102] With the above configuration, since the isolator is located between the first sampling transmission element 311 and the second sampling transmission element 321, the first sampling transmission element 311 and the second sampling transmission element 321 can be separated. Since the isolator 4 is made of insulating material, the first sampling transmission element 311 and the second sampling transmission element 321 can work independently, ensuring the reliability of the redundant design.

[0103] In some embodiments, the first sampling transmission member 311 and the second sampling transmission member 321 are respectively bonded to the two sides of the separator 4 along the first direction. This configuration allows for the separate fixing of the separator 4 to the first sampling transmission member 311 and the second sampling transmission member 321, thereby ensuring the secure fixing of the first sampling transmission member 311 and the second sampling transmission member 321, and consequently ensuring the transmission reliability of the first sampling transmission member 311 and the second sampling transmission member 321. Furthermore, the bonding fixing method is simpler.

[0104] In some embodiments, as shown in Figures 13-15, the number of first busbars 2 is multiple; the first sampling transmission device 311 includes multiple first sampling terminals 3111 and a first line integration device 3112, the multiple first busbars 2 are correspondingly arranged with the multiple first sampling terminals 3111, and the first line integration device 3112 connects the first sampling terminals 3111 and the first signal processing component 312. The second sampling transmission device 321 includes multiple second sampling terminals 3211 and a second line integration device 3212, the multiple first busbars 2 are correspondingly arranged with the multiple second sampling terminals 3211, the second sampling terminals 3211 are connected to the corresponding first busbars 2, and the second line integration device 3212 connects the second sampling terminals 3211 and the second signal processing component 322.

[0105] It is understandable that there are multiple first busbars 2 and multiple battery cells, and multiple battery cells are connected through multiple first busbars 2.

[0106] Since the number of battery cells in the battery device 01 is generally large, the number of first busbars 2 is also large. Therefore, by setting the first sampling transmission component 311 as multiple first sampling terminals 3111 and a first line integration component 3112, the first line integration component 3112 can easily collect the electrical signals of the battery cells corresponding to the multiple first busbars 2 at one time through multiple first sampling terminals 3111, thereby realizing the acquisition and monitoring of electrical signals on multiple first busbars 2, thus ensuring the simplicity of the circuit. Similarly, by setting the second sampling transmission component 321 as multiple second sampling terminals 3211 and a second line integration component 3212, the second line integration component 3212 can easily collect the electrical signals of the battery cells corresponding to the multiple first busbars 2 at one time through multiple second sampling terminals 3211, thereby realizing the acquisition and monitoring of electrical signals on multiple first busbars 2, thus also ensuring the simplicity of the circuit.

[0107] In some embodiments, as shown in Figures 13 and 14, the first circuit integration 3112 is a first flexible circuit board. And / or, the second circuit integration 3212 is a second flexible circuit board.

[0108] This configuration facilitates the electrical connection between the first sampling terminal 3111 and the first flexible circuit board, as well as the electrical connection between the first flexible circuit board and the first signal processing component 312, due to the exposed conductive lines on the first flexible circuit board. And / or, the exposed conductive lines on the second flexible circuit board facilitate the electrical connection between the second sampling terminal 3211 and the second flexible circuit board, as well as the electrical connection between the second flexible circuit board and the second signal processing component 322.

[0109] In some embodiments, as shown in Figures 13, 14, 21 and 22, a first flexible circuit board has a first alignment hole a1 and a second flexible circuit board has a second alignment hole a2, and along a first direction, the first alignment hole a1 and the second alignment hole a2 at least partially overlap.

[0110] In some examples, there are multiple first alignment holes a1 and multiple second alignment holes a2. The multiple first alignment holes a1 correspond one-to-one with the multiple second alignment holes a2. Multiple positioning posts are used to pass through the corresponding first alignment holes a1 and second alignment holes a2 to achieve the positioning of the first flexible circuit board and the second flexible circuit board.

[0111] For example, along the X direction, the first flexible circuit board has a plurality of first positioning holes arranged at intervals in sequence, and the second flexible circuit board has a plurality of second positioning holes arranged at intervals in sequence, with each of the plurality of first positioning holes corresponding to one of the plurality of second positioning holes. Along the Y direction, the first flexible circuit board has two rows of first positioning holes, and the second flexible circuit board has two rows of second positioning holes.

[0112] In this way, before connecting the first sampling terminal 3111 to the first busbar 2, and before connecting the second sampling terminal 3211 to the first busbar 2, multiple positioning posts are first used to pass through the corresponding multiple first alignment holes a1 and second alignment holes a2 to achieve the positioning of the first flexible circuit board and the second flexible circuit board. Since there are multiple first alignment holes a1 and second alignment holes a2, and they are arranged in the X and Y directions respectively, the stability and accuracy of the positioning can be achieved.

[0113] With the above settings, before connecting the first sampling terminal 3111 to the first busbar 2, and before connecting the second sampling terminal 3211 to the first busbar 2, the positioning post is first used to pass through the first alignment hole a1 and the second alignment hole a2 to achieve the positioning of the first flexible circuit board and the second flexible circuit board. This can ensure the accuracy of the connection position between the first sampling terminal 3111 and the first busbar 2, and ensure the accuracy of the connection position between the second sampling terminal 3211 and the first busbar 2.

[0114] In some embodiments, as shown in FIG21, the first sampling terminal 3111 includes a first voltage sampling terminal K1 and a first temperature sampling unit K2. The first end of the first voltage sampling terminal K1 is electrically connected to the first busbar 2, and the second end of the first voltage sampling terminal K1 is connected to the first line integration component 3112. The first temperature sampling unit K2 is in contact with the first busbar 2 and is electrically connected to the first line integration component 3112. As shown in FIG22, the second sampling terminal 3211 includes a second voltage sampling terminal N1 and a second temperature sampling unit N2. The first end of the second voltage sampling terminal N1 is electrically connected to the first busbar 2, and the second end of the second voltage sampling terminal N1 is connected to the second line integration component 3212. The second temperature sampling unit N2 is in contact with the first busbar 2 and is electrically connected to the second line integration component 3212.

[0115] In this context, the contact between the first temperature sampling unit K2 and the first busbar 2 means that the first temperature sampling unit K2 needs to collect the temperature on the first busbar 2 through contact. The first temperature sampling unit K2 can be in direct contact with the first busbar 2 or indirect contact. Similarly, the contact between the second temperature sampling unit N2 and the first busbar 2 means that the second temperature sampling unit N2 needs to collect the temperature on the first busbar 2 through contact. The second temperature sampling unit N2 can be in direct contact with the first busbar 2 or indirect contact.

[0116] In some examples, the first temperature sampling unit K2 can be a temperature sensor, and the second temperature sampling unit N2 can also be a temperature sensor.

[0117] In some examples, the first voltage sampling terminal K1 can be a voltage acquisition harness or a voltage acquisition conductive sheet. The second voltage sampling terminal N1 can be a voltage acquisition harness or a voltage acquisition conductive sheet.

[0118] With the above settings, the voltage signal of a single battery cell can be sampled and transmitted through the first voltage sampling terminal K1, and the temperature signal of the single battery cell can be sampled and transmitted through the first temperature sampling unit K2, thereby enabling the monitoring of the voltage and temperature signals of the single battery cell. Similarly, the voltage signal of a single battery cell can be sampled and transmitted through the second voltage sampling terminal N1, and the temperature signal of the single battery cell can be sampled and transmitted through the second temperature sampling unit N2, thereby enabling the monitoring of the voltage and temperature signals of the single battery cell.

[0119] In some embodiments, as shown in Figures 21 and 22, the first voltage sampling terminal K1 is a first sampling element, and the first temperature sampling unit K2 is in contact with the first sampling element. The second voltage sampling terminal N1 is a second sampling element, and the second temperature sampling unit N2 is in contact with the second sampling element.

[0120] It is understandable that the first and second sampling sheets should be electrically and thermally conductive so that the first sampling sheet can be electrically connected to the first busbar 2 and the first circuit integration 3112 respectively, and the first temperature sampling unit K2 can collect the temperature of the first busbar 2 through contact with the first sampling sheet. Similarly, the second sampling sheet can be electrically connected to the first busbar 2 and the second circuit integration 3212 respectively, and the second temperature sampling unit N2 can collect the temperature of the first busbar 2 through contact with the second sampling sheet.

[0121] For example, both the first sampling sheet and the second sampling sheet can be nickel sheets.

[0122] In some examples, the first sampling piece achieves electrical connection by contacting a first flexible circuit board, and the second sampling piece achieves electrical connection by contacting a second flexible circuit board.

[0123] In some examples, as shown in Figure 21, the first flexible circuit board (the first circuit integration component 3112 in Figure 21) has a through-hole W1. The first buffer hole W1 divides a region of a first elastic sheet W2 on the first flexible circuit board, and the first voltage sampling terminal K1 is attached to the first elastic sheet W2. With this configuration, when the first flexible circuit board is subjected to the expansion force of the battery cell, the first elastic sheet W2 can elastically deform relative to the body region of the first flexible circuit board, thereby ensuring that the first voltage sampling terminal K1 can always make contact with the first flexible circuit board, thus improving the overall safety performance of the battery device 01.

[0124] In some examples, as shown in Figure 22, the second flexible circuit board (the second circuit integration 3212 in Figure 22) has a through-hole L1. The second buffer hole L1 divides a region of a second elastic sheet L2 on the second flexible circuit board, and the second voltage sampling terminal N1 is attached to the second elastic sheet L2. With this configuration, when the second flexible circuit board is subjected to the expansion force of the battery cell, the second elastic sheet L2 can elastically deform relative to the body region of the second flexible circuit board, thereby ensuring that the second voltage sampling terminal N1 can always make contact with the second flexible circuit board, thus improving the overall safety performance of the battery device 01.

[0125] With the above configuration, the first voltage sampling terminal K1 is in the form of a sampling piece, which facilitates the connection of the first sampling piece to the first busbar 2 and the first circuit integration component 3112. Simultaneously, the contact between the first temperature sampling unit K2 and the first sampling piece allows for the acquisition of the temperature of the battery cells connected to the first busbar 2, simplifying the configuration of the first temperature sampling unit K2. Similarly, the second voltage sampling terminal N1 is also in the form of a sampling piece, facilitating the connection of the second sampling piece to the first busbar 2 and the second circuit integration component 3212. Furthermore, the contact between the first temperature sampling unit K2 and the first sampling piece allows for the acquisition of the temperature of the battery cells connected to the first busbar 2, simplifying the configuration of the first temperature sampling unit K2.

[0126] In some embodiments, the first end of the first voltage sampling terminal K1 is welded to the first busbar 2; or, the first busbar 2 has a first socket, and the first end of the first voltage sampling terminal K1 extends into the first socket.

[0127] And / or, the first end of the second voltage sampling terminal N1 is soldered to the first busbar 2; or, the first busbar 2 has a second socket, and the first end of the second voltage sampling terminal N1 extends into the second socket.

[0128] In other words, the first voltage sampling terminal K1 can be electrically connected to the first busbar 2 by soldering or plugging. The second voltage sampling terminal N1 can be electrically connected to the first busbar 2 by soldering or plugging.

[0129] Among these, welding can be tin welding.

[0130] In some examples, the first sampling module 31 and the second sampling module 32 are both located between the positive and negative terminals of the battery cell, and the first and second sockets are both opened on the inner side of the first busbar 2 along the Y direction, which facilitates the connection of the first voltage sampling terminal K1 and the second voltage sampling terminal N1.

[0131] In addition, it is understandable that the connection of the first voltage sampling terminal K1 and the second voltage sampling terminal N1 should not affect the settings of the first temperature sampling unit K2 and the second temperature sampling unit N2.

[0132] With the above configuration, the first voltage sampling terminal K1 can be connected to the first busbar 2 by welding or plugging. And / or, the second voltage sampling terminal N1 can be connected to the first busbar 2 by welding or plugging. Among these methods, welding provides a more stable and reliable fixation, while plugging is more convenient.

[0133] In some embodiments, as shown in Figures 7 and 23, the first signal processing component 312 includes a first rigid circuit board 3121 and a first processing chip 3122. The first processing chip 3122 is connected to the first rigid circuit board 3121, and the first rigid circuit board 3121 is electrically connected to a first circuit integration component 3112. The first processing chip 3122 processes the electrical signals of the battery cells collected by the first circuit integration component 3112. The second signal processing component 322 includes a second rigid circuit board 3221 and a second processing chip 3222 that are electrically connected. The second processing chip 3222 is connected to the second rigid circuit board 3221, and the first rigid circuit board 3121 is electrically connected to the second circuit integration component 3212. The second processing chip 3222 processes the electrical signals of the battery cells collected by the second circuit integration component 3212.

[0134] In some examples, when the first sampling terminal 3111 includes a first voltage terminal and a first temperature sampling unit K2, the first processing chip 3122 should be able to simultaneously process the voltage signal and temperature signal of the battery cell. When the second sampling terminal 3211 includes a second voltage terminal and a second temperature sampling unit N2, the second processing chip 3222 should be able to simultaneously process the voltage signal and temperature signal of the battery cell.

[0135] With the above configuration, the first rigid circuit board 3121 can support the first processing chip 3122, and the second rigid circuit board 3221 can support the second processing chip 3222, ensuring the normal operation of the processing chips. Furthermore, the appropriate configuration of the first and second rigid circuit boards 3121 also provides support for the first circuit integration component 3112 and the second circuit integration component 3212. This is especially important when the first circuit integration component 3112 is a first flexible circuit board and the second circuit integration component 3212 is a second flexible circuit board, in which case the first and second rigid circuit boards 3121 and 3221 are essential for providing support, thereby ensuring the overall reliability of the battery device 01.

[0136] In some embodiments, as shown in FIG7, a first rigid circuit board 3121 and a second rigid circuit board 3221 are sequentially arranged in a plane perpendicular to the first direction.

[0137] In some examples, as shown in Figure 7, the first direction is the Z direction, and in a plane perpendicular to the first direction, the first rigid circuit board 3121 and the second rigid circuit board 3221 are arranged sequentially along the X direction.

[0138] For example, a first rigid circuit board 3121 is located between a first circuit integration 3112 and a battery cell. A second rigid circuit board 3221 is located between a second circuit integration 3212 and a battery cell. The first rigid circuit board 3121 and the first circuit integration 3112 are electrically connected, facilitating the electrical connection of the second rigid circuit board 3221 and the second circuit integration 3212, thereby facilitating the spatial layout within the battery device 01. Furthermore, in this configuration, the first rigid circuit board 3121 and the second rigid circuit board 3221 can also provide support for the first circuit integration 3112 and the second circuit integration 3212.

[0139] With the above arrangement, in the first direction, the first rigid circuit board 3121 and the second rigid circuit board 3221 are not stacked. This not only ensures the independence of the first rigid circuit board 3121 and the second rigid circuit board 3221 and the reliability of the redundant design of the first sampling module 31 and the second sampling module 32, but also facilitates the electrical connection between the first rigid circuit board 3121 and the first circuit integration component 3112, and the electrical connection between the second rigid circuit board 3221 and the second circuit integration component 3212, so as to facilitate the internal spatial layout of the battery device 01.

[0140] In some embodiments, the first circuit integration component 3112 is soldered to the first rigid circuit board 3121; or, the first circuit integration component 3112 is plugged into the first rigid circuit board 3121 via a first connector. And / or, the second circuit integration component 3212 is soldered to the second rigid circuit board 3221; or, the second circuit integration component 3212 is plugged into the second rigid circuit board 3221 via a second connector.

[0141] In other words, the first circuit integration component 3112 and the first rigid circuit board 3121 can be electrically connected by soldering or plugging. The second circuit integration component 3212 and the second rigid circuit board 3221 can be electrically connected by soldering or plugging.

[0142] Among these, welding can be tin welding.

[0143] With the above configuration, the first circuit integration component 3112 is connected to the first rigid circuit board 3121 by soldering, ensuring reliable connection. Alternatively, the first circuit integration component 3112 is connected to the first rigid circuit board 3121 by plug-in connection, improving connection convenience. And / or, the second circuit integration component 3212 is connected to the second rigid circuit board 3221 by soldering, ensuring reliable connection. Alternatively, the second circuit integration component 3212 is connected to the first rigid circuit board 3121 by plug-in connection, improving connection convenience.

[0144] In some embodiments, as shown in FIG23, the sampling system 3 further includes a calibration module 33, which is electrically connected to the first sampling module 31 and the second sampling module 32, respectively. The calibration module 33 is used to acquire at least one of the electrical signals of the battery cells collected by the first sampling module 31 and the electrical signals of the battery cells collected by the second sampling module 32, and to perform calibration to obtain the final signal of the battery cells.

[0145] In some examples, the first sampling module 31 includes a first voltage sampling terminal K1, a first temperature sampling unit K2, and a first circuit integration component 3112. The first signal processing component 312 includes a first rigid circuit board 3121 and a first processing chip 3122. The calibration module 33 is then electrically connected to the first processing chip 3122. The second sampling module 32 includes a second voltage sampling terminal N1, a second temperature sampling unit N2, and a second circuit integration component 3212. The second signal processing component 322 includes a second rigid circuit board 3221 and a second processing chip 3222. The calibration module 33 is then electrically connected to the second processing chip 3222. In this way, the calibration module 33 can compare and correct the acquired electrical signals, thereby achieving accurate monitoring of the battery cell voltage and temperature signals.

[0146] Through the above settings, the electrical signals collected by the first sampling module 31 and the second sampling module 32 can be compared and calibrated within the calibration module 33 to determine the final signal of the battery cell, thereby judging whether the battery cell is working normally. This calibration enables precise monitoring of the working status of the battery cell. If the final signal is outside the safe range, it indicates that the battery device 01 is in an unsafe state and needs to be checked promptly. If the final signal is within the safe range, it indicates that the battery device 01 is in a safe state.

[0147] The calibration method for the calibration module is described below.

[0148] In some embodiments, when the calibration module 33 acquires the electrical signal of the battery cell collected by the first sampling module 31 or the electrical signal of the battery cell collected by the second sampling module 32, the final signal is the electrical signal of the battery cell collected by the first sampling module 31 or the electrical signal of the battery cell collected by the second sampling module 32.

[0149] In other words, if either the first sampling module 31 or the second sampling module 32 malfunctions, the calibration module 33 will only receive the electrical signal from one battery cell. In this case, the electrical signal from that single battery cell will be used as the final signal for that battery cell. If the final signal is outside the safe range, it indicates that the battery device 01 is in an unsafe state and requires immediate inspection. If the final signal is within the safe range, it indicates that the battery device 01 is in a safe state.

[0150] In other embodiments, when the calibration module 33 acquires the electrical signal of the battery cell collected by the first sampling module 31 and the electrical signal collected by the second sampling module 32, the final signal is the average value of the electrical signal of the battery cell collected by the first sampling module 31 and the electrical signal of the battery cell collected by the second sampling module 32.

[0151] In other words, at this point, both the first sampling module 31 and the second sampling module 32 are functioning normally. Thus, the calibration module 33 can receive the two electrical signals from a single battery cell. The average of these two signals is then calculated and used as the final signal for the battery cell. If the final signal is outside the safe range, it indicates that the battery device 01 is in an unsafe state and requires immediate inspection. If the final signal is within the safe range, it indicates that the battery device 01 is in a safe state.

[0152] The above are merely preferred embodiments of this disclosure and do not limit the patent scope of this disclosure. Any equivalent structural or procedural transformations made using the content of this disclosure and its drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this disclosure.

Claims

1. A battery device, wherein, include: A battery cell assembly includes a first battery cell and a second battery cell; A first busbar, wherein the first busbar is electrically connected to the first battery cell and the second battery cell; The sampling system includes a first sampling module and a second sampling module, both of which are electrically connected to the first busbar.

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, wherein the first signal processing component processes the electrical signals of the battery cells collected by the first sampling transmission component; The second sampling module includes a second sampling transmission component and a second signal processing component, wherein the second signal processing component processes the electrical signals of the battery cells collected by the second sampling transmission component; The first busbar is electrically connected to the first sampling transmission device and the second sampling transmission device.

3. The battery device according to claim 2, wherein, The first sampling transmission device and the second sampling transmission device are both located on the same side of the battery cell along the first direction.

4. The battery device according to claim 3, wherein, At least a portion of the structure of the first sampling transmission element and at least a portion of the structure of the second sampling transmission element are stacked along the first direction.

5. The battery device according to claim 4, wherein, The first sampling transmission device includes a first sampling terminal and a first line integration component. The first sampling terminal is connected to the first busbar, and the first line integration component is 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 connected to the first bus component, and the second line integration component is connected to the second sampling terminal and the second signal processing component. The first line assembly and the second line assembly are stacked in the first direction.

6. The battery device according to claim 4 or 5, wherein, The first sampling transmission device includes a first sampling terminal and a first line integration component. The first sampling terminal is connected to the first busbar, and the first line integration component is 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 connected to the first bus component, and the second line integration component is connected to the second sampling terminal and the second signal processing component. The first sampling terminal and the second sampling terminal are stacked in the first direction; or, the first sampling terminal and the second sampling terminal are staggered in the second direction, which is perpendicular to the first direction.

7. 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 busbar.

8. The battery device according to claim 6 or 7, 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 and the second circuit assembly.

9. The battery device according to any one of claims 4-8, wherein, The battery device further includes a separator, which is provided between the first sampling transmission component and the second sampling transmission component along the first direction. The separator is an insulating component.

10. The battery device according to claim 9, wherein, The first sampling transmission component and the second sampling transmission component are respectively bonded to the two sides of the separator along the first direction.

11. The battery device according to any one of claims 5-10, wherein, The first circuit integration component is a first flexible circuit board; and / or, the second circuit integration component is a second flexible circuit board.

12. The battery device according to claim 11, wherein, The first flexible circuit board has a first alignment hole, and the second flexible circuit board has a second alignment hole. Along the first direction, the first alignment hole and the second alignment hole at least partially overlap.

13. The battery device according to any one of claims 5-12, wherein, The first signal processing component includes a first rigid circuit board and a first processing chip. The first processing chip is connected to the first rigid circuit board. The first rigid circuit board is electrically connected to the first circuit integration component. The first processing chip processes the electrical signals of the battery cells collected by the first circuit integration component. The second signal processing component 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. The first 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.

14. The battery device according to claim 13, wherein, In a plane perpendicular to the first direction, the first rigid circuit board and the second rigid circuit board are arranged sequentially.

15. The battery device according to claim 13 or 14, wherein, The first circuit integration component is soldered to the first rigid circuit board; or, the first circuit integration component is plugged into the first rigid circuit board via a first connector; and / or The second circuit integration component is soldered to the second rigid circuit board; or, the second circuit integration component is plugged into the second rigid circuit board via a second connector.

16. The battery device according to any one of claims 5-15, wherein, The first sampling terminal 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 the first busbar, and the second end of the first voltage sampling terminal is connected to the first line integration component. The first temperature sampling unit is in contact with the first busbar and is electrically connected to the first line integration component. The second sampling terminal 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 busbar, and the second end of the second voltage sampling terminal is connected to the second line integration component. The second temperature sampling unit is in contact with the first busbar and is electrically connected to the second line integration component.

17. The battery device according to claim 16, wherein, The first voltage sampling terminal is a first sampling piece, and the first temperature sampling unit is in contact with the first sampling piece; the second voltage sampling terminal is a second sampling piece, and the second temperature sampling unit is in contact with the second sampling piece.

18. The battery device according to claim 16 or 17, wherein, The first end of the first voltage sampling terminal is soldered to the first busbar; or, the first busbar has a first socket, 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 first busbar; or, the first busbar has a second socket, and the first end of the second voltage sampling terminal extends into the second socket.

19. The battery device according to any one of claims 2-18, wherein, The number of the first busbars is multiple; the first sampling transmission component includes multiple first sampling terminals and a first line integration component, the multiple first busbars are correspondingly arranged with the multiple first sampling terminals, and the first line integration component connects the first sampling terminals and the first signal processing component; The second sampling transmission component includes a plurality of second sampling terminals and a second line integration component. A plurality of first busbars are correspondingly arranged with a plurality of second sampling terminals. The second sampling terminals are connected to the corresponding first busbars. The second line integration component is connected to the second sampling terminals and the second signal processing component.

20. The battery device according to claim 1, wherein, The first sampling module and the second sampling module have the same structure.

21. The battery device according to any one of claims 1-20, wherein, Both the first sampling module and the second sampling module are located between the positive and negative terminals of the battery cell.

22. The battery device according to any one of claims 1-21, wherein, The sampling system further includes a calibration module, which is electrically connected to the first sampling module and the second sampling module respectively; The calibration module is used to acquire at least one of the electrical signals of the battery cell collected by the first sampling module and the electrical signals of the battery cell collected by the second sampling module, and to perform calibration to obtain the final signal of the battery cell.

23. The battery device according to claim 22, wherein, When the calibration module acquires the electrical signal of the battery cell collected by the first sampling module or the electrical signal of the battery cell collected by the second sampling module, the final signal is the electrical signal of the battery cell collected by the first sampling module or the electrical signal of the battery cell collected by the second sampling module. When the calibration module acquires the electrical signals of the battery cells collected by the first sampling module and the electrical signals collected by the second sampling module, the final signal is the average value of the electrical signals of the battery cells collected by the first sampling module and the electrical signals of the battery cells collected by the second sampling module.

24. An electrical appliance, wherein, Includes the battery device according to any one of claims 1 to 23 for providing electrical energy.

25. The electrical equipment according to claim 24, wherein, The electrical equipment includes aircraft.

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