Battery device and electric device

Abstract

The application provides a battery device and a power utilization device, and belongs to the technical field of batteries. The battery device comprises a battery, a collection circuit board configured to accommodate a collection device, the collection device comprising a collection assembly and a collection antenna, the collection assembly being configured to be electrically connected with the battery and to collect and process state information of the battery, and the collection antenna being used for transmitting the state information; and at least part of an antenna of a bus antenna is arranged between the battery and the collection circuit board and is configured to communicate with the collection antenna to transmit the state information collected by the collection device. The battery device can reduce the risk of problems such as internal short circuit and communication quality decline.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to sustainable social development. Rechargeable batteries, with their ability to store and release energy as needed, are widely used in various electrical devices and energy storage systems, and are an important component in promoting energy transition and sustainable development. For the new energy industry, battery technology is a crucial factor in its development.

[0003] During battery use, a data acquisition device is typically installed for each battery to obtain its actual usage status. To reduce the size of the battery device, wireless transmission can be used to transmit the battery status information acquired by the data acquisition device to the battery management system. Due to differences in battery structure and usage environment, the design of the wireless communication architecture in the battery device will affect the quality of wireless transmission, potentially leading to poor communication quality and affecting battery monitoring and control. Utility Model Content

[0004] This application aims to at least address the technical problem of poor wireless communication quality in battery devices existing in the prior art. Therefore, one objective of this application is to provide a battery device that reduces the impact of the environment in which the battery is located on wireless communication within the battery device.

[0005] An embodiment of the first aspect of this application provides a battery device, including: a battery; a data acquisition circuit board configured to house a data acquisition device; the data acquisition device including a data acquisition component and a data acquisition antenna, the data acquisition component being configured to be electrically connected to the battery and to acquire and process state information of the battery, the data acquisition antenna being used to transmit the state information; at least a portion of a bus antenna being disposed between the battery and the data acquisition circuit board and configured to communicate with the data acquisition antenna to transmit the state information acquired by the data acquisition device.

[0006] In the technical solution of this application embodiment, at least part of the bus antenna is placed between the battery and the acquisition circuit board, which can effectively isolate the water vapor in the environment where the battery is located. Especially when the battery is in a relatively humid environment, it can reduce the probability of water vapor condensing around the antenna and reduce the risk of short circuits, communication quality degradation and other problems.

[0007] In some embodiments, the acquisition antenna is positioned on the side of the acquisition circuit board closer to the bus antenna. Positioning the acquisition antenna and bus antenna on the same side of the acquisition circuit board reduces the distance between them, minimizes obstructions, improves wireless communication quality, and reduces the impact of humid environments on the acquisition antenna.

[0008] In some embodiments, the acquisition component is positioned on the side of the acquisition circuit board closer to the bus antenna. Flexible placement of the acquisition component on the acquisition circuit board allows for customized design based on usage requirements, effectively expanding the application scenarios of the acquisition circuit board.

[0009] In some embodiments, the battery device further includes a medium configured to fill at least a portion of the acquisition component and the battery. Providing a medium between the acquisition component and the battery can provide support and shock absorption for the acquisition component, reducing the risk of damage to the acquisition component due to external forces.

[0010] In some embodiments, the acquisition component includes: a sampling element configured to be electrically connected to a battery to acquire battery status information; a chip configured to be electrically connected to the sampling element to process the battery status information; and a medium configured to fill the space between the sampling element and the battery. Filling the space between the sampling element and the battery with the medium can effectively protect the sampling element and provide good support and shock absorption while reducing the amount of medium used.

[0011] In some embodiments, the medium comprises a flexible material. Using a flexible material to fill the space between the battery and the acquisition component can effectively reduce the impact of the medium on the acquisition component and decrease the risk of the medium damaging the acquisition component.

[0012] In some embodiments, the medium includes a waterproof material. Using a waterproof material as the medium reduces the amount of moisture absorbed by the medium in humid environments, thereby reducing the risk of failure of the acquisition component due to water absorption by the medium.

[0013] In some embodiments, the acquisition component is positioned on the side of the acquisition circuit board away from the bus antenna. Flexible placement of the acquisition component on the acquisition circuit board allows for tailored design based on usage requirements, effectively expanding the application scenarios of the acquisition circuit board.

[0014] In some embodiments, the bus antenna and the acquisition antenna communicate via electromagnetic waves, and the distance between the bus antenna and the acquisition antenna is set to be less than or equal to the wavelength of the electromagnetic waves. Setting the distance between the bus antenna and the acquisition antenna to be less than or equal to the wavelength of the electromagnetic waves used for communication between them enables near-field coupling between them, thereby achieving wireless communication between the bus antenna and the acquisition device.

[0015] In some embodiments, the distance between the bus antenna and the acquisition antenna is set to be less than or equal to one-tenth of the wavelength of the electromagnetic wave. Reducing the distance between the bus antenna and the acquisition antenna can enhance the coupling effect between them and improve the quality of wireless communication.

[0016] In some embodiments, the bus antenna includes at least two transmission lines. Using a bus antenna with at least two transmission lines can improve its immunity to interference signals.

[0017] In some embodiments, at least a portion of the bus antenna is configured to have an orthographic projection on the acquisition circuit board and an orthographic projection on the battery. By configuring at least a portion of the bus antenna to have an orthographic projection on both the acquisition circuit board and the battery, the acquisition circuit board can provide protection for this portion of the antenna, reducing the risk of moisture dripping into the antenna.

[0018] In some embodiments, the acquisition antenna includes an inverted-F antenna. Using an inverted-F antenna as the acquisition antenna allows for precise control of the antenna's operating frequency, enabling it to meet wireless communication requirements, while also simplifying the manufacturing process and reducing manufacturing costs.

[0019] In some embodiments, the data acquisition antenna includes a microstrip antenna. Using a microstrip antenna as the data acquisition antenna can effectively reduce the size of the data acquisition antenna and reduce the difficulty of antenna fabrication.

[0020] In some embodiments, the acquisition antenna is printed on the acquisition circuit board. Integrating the acquisition antenna onto the acquisition circuit board using a printing method allows for the fixation of the acquisition antenna, effectively improving the integration of the battery device.

[0021] In some embodiments, the acquisition antenna is configured to be at least partially embedded in the acquisition circuit board. Embedding the acquisition antenna in the acquisition circuit board can fix the acquisition antenna in place, reducing the risk of displacement and damage to the acquisition antenna due to stress.

[0022] In some embodiments, the acquisition circuit board includes a flexible circuit board and / or a rigid circuit board. By selecting different types of circuit boards, the support for the acquisition device can be adjusted according to usage requirements, which is beneficial for improving the integration of the battery device and / or reducing the weight of the battery device.

[0023] In some embodiments, the battery device further includes a mounting bracket connected to the acquisition circuit board and / or the battery, and configured to secure the bus antenna between the acquisition circuit board and the battery. Using a mounting bracket to secure the bus antenna reduces the risk of antenna displacement due to vibration or external forces, thus maintaining better communication quality.

[0024] In some embodiments, the battery device further includes a housing configured to provide a accommodating space for the battery, acquisition circuit board, acquisition device, and bus antenna. By housing the battery, acquisition circuit board, acquisition device, and bus antenna, the housing provides protection for the internal components, thereby improving the reliability of the battery device.

[0025] In some embodiments, the housing includes a cover plate, and the acquisition circuit board is at least partially disposed between the cover plate and at least a portion of the bus antenna. Disposing the acquisition circuit board between the cover plate and at least a portion of the bus antenna allows the acquisition circuit board to be isolated from moisture condensation at the cover plate, reducing the impact of moisture on the antenna and lowering the risk of short circuits, communication quality degradation, and other problems.

[0026] In some embodiments, the battery includes a positive terminal and a negative terminal, which are located on the same side of the battery and face the acquisition circuit board. When the positive and negative terminals are on the same side of the battery, the acquisition circuit board can be positioned so that the positive and negative terminals face the battery, which facilitates the installation and fixation of the acquisition circuit board and reduces the risk of wireless communication abnormalities caused by the displacement of the acquisition circuit board.

[0027] In some embodiments, the battery includes a positive terminal and a negative terminal, which are respectively disposed on different sides of the battery, with either the positive or negative terminal facing the acquisition circuit board. When the positive and negative terminals are located on different sides of the battery, the acquisition circuit board can be configured to face either the positive or negative terminal of the battery, and the position of the acquisition circuit board can be flexibly designed according to factors such as the structural design of the battery device.

[0028] In some embodiments, the battery device further includes a battery management system electrically connected to a bus antenna for controlling the battery. Electrically connecting the battery management system to the bus antenna, through wireless communication between the bus antenna and the acquisition antenna, enables state monitoring and control of the battery, reducing the number of cables required in the battery device and thus contributing to a smaller device size.

[0029] An embodiment of the second aspect of this application provides an electrical device, including the battery device in the above embodiments, the battery device being used to provide electrical energy.

[0030] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0031] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0032] Figure 1This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0033] Figure 2 This is a schematic diagram of the structure of a battery device according to some embodiments of this application;

[0034] Figure 3 This is a schematic diagram showing the positions of the bus antenna and the acquisition device in some embodiments of this application;

[0035] Figure 4 This is a schematic diagram showing the positions of the bus antenna and the acquisition device in some embodiments of this application;

[0036] Figure 5 This is a schematic diagram showing the location of the medium in some embodiments of this application;

[0037] Figure 6 This is a schematic diagram of the acquisition components in some embodiments of this application;

[0038] Figure 7 This is a schematic diagram showing the positions of the bus antenna and the acquisition device in some embodiments of this application;

[0039] Figure 8 This is a schematic diagram of the structure of a battery device including multiple batteries according to some embodiments of this application;

[0040] Figure 9 This is a schematic diagram showing the position of the housing in some embodiments of this application;

[0041] Figure 10 This is a schematic diagram showing the positions of the positive and negative terminals in some embodiments of this application;

[0042] Figure 11 This is a schematic diagram showing the positions of the positive and negative terminals in some embodiments of this application;

[0043] Figure 12 This is a schematic diagram of a battery device including a battery management system according to some embodiments of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1000 vehicles;

[0046] Battery unit 100, controller 200, motor 300;

[0047] Battery 110, positive terminal 111, negative terminal 112, acquisition circuit board 120, acquisition device 130, bus antenna 140, mounting bracket 150, acquisition antenna 131, acquisition component 132, sampling element 1322, chip 1321, medium 133, housing 160, cover plate 161, battery management system 170. Detailed Implementation

[0048] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, technical terms such as "first" and "second" 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 and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0051] 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 application. 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.

[0052] In the description of the embodiments in this application, 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0054] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0055] In the description of the embodiments of this application, 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0056] Currently, the application of rechargeable batteries is becoming increasingly widespread, judging from market trends. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, the market demand is also constantly increasing.

[0057] During the use of a battery device, a data acquisition device is typically installed for each battery to obtain its actual usage status. To reduce the size of the battery device, the battery status information acquired by the data acquisition device can be transmitted wirelessly to the battery management system. For example, a separate acquisition antenna and a bus antenna can be designed. The acquisition antenna transmits the status information of each battery to the bus antenna wirelessly, and the bus antenna then transmits this status information to the battery management system and other devices.

[0058] Currently, wireless communication designs used in battery devices typically involve placing a data acquisition circuit board within the device, with the acquisition antenna mounted on this board. To enable wireless communication between the acquisition antenna and the bus antenna, the bus antenna is usually positioned above both the acquisition antenna and the acquisition circuit board, i.e., on the side of the acquisition circuit board facing away from the battery. While this layout facilitates battery device assembly and wiring to some extent, it also has significant drawbacks. Especially in humid environments or where condensation easily occurs within the battery device, moisture can easily seep into or accumulate around the bus antenna. This can lead to short circuits, degraded communication quality, and other malfunctions, affecting the normal operation of the battery device.

[0059] To improve the communication quality of wireless communication in the battery device, the bus antenna can be placed between the acquisition circuit board and the battery, making full use of the physical structure of the acquisition circuit board to improve the isolation and protection of the bus antenna.

[0060] Using this design, the acquisition circuit board in the battery device can be isolated from moisture, reducing the risk of moisture accumulating around the bus antenna or condensation dripping into the bus antenna, effectively improving the reliability of the bus antenna and achieving better wireless communication quality.

[0061] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using the battery device disclosed in this application. This improves the communication quality of wireless communication within the battery device and reduces the risk of battery device malfunctions.

[0062] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, energy storage containers, energy storage cabinets, energy storage power stations, energy storage battery packs, or portable energy storage systems. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft.

[0063] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0064] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0065] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0066] This application provides a battery device. (See reference...) Figure 2 The battery device 100 includes a battery 110, a data acquisition circuit board 120, a data acquisition device 130, and a bus antenna 140.

[0067] The acquisition circuit board 120 is configured to accommodate the acquisition device 130.

[0068] The data acquisition device 130 includes a data acquisition component 132 and a data acquisition antenna 131. The data acquisition component 132 is configured to be electrically connected to the battery 110 and to acquire and process the status information of the battery 110. The data acquisition antenna 131 is used to transmit the status information.

[0069] At least a portion of the antenna of the bus antenna 140 is disposed between the battery 110 and the acquisition circuit board 120 and is configured to communicate with the acquisition antenna 131 to transmit status information acquired by the acquisition device 130.

[0070] In embodiments of this application, the term "battery device" may encompass a series, parallel, or hybrid structure of multiple battery cells (e.g., a battery module), and the term "battery" may encompass a single battery cell (e.g., a battery cell).

[0071] Figure 2 An example of a cross-sectional view of the battery device 100 is shown. Figure 2 The diagram illustrates the positional relationship between a battery 110, a data acquisition circuit board 120, a data acquisition device 130, and a bus antenna 140 within the battery assembly 100. Figure 2 In the example shown, the acquisition circuit board 120 is located on one side of the battery 110 (in Figure 2(Illustrated above battery 110). In some embodiments, there is a gap between the acquisition circuit board 120 and the battery 110 to accommodate the acquisition device 130 and the bus antenna 140.

[0072] It should be understood that, although in Figure 2 While illustrated as having only one battery 110, in other embodiments, the battery device 100 may include multiple batteries 110. In some embodiments, a data acquisition circuit board 120 may be disposed on one side of the multiple batteries 110, and at least a portion of the antenna of the bus antenna 140 may be disposed between the multiple batteries 110 and the data acquisition circuit board 120. Similarly, the battery device 100 may also include multiple data acquisition circuit boards 120. In some embodiments, multiple data acquisition circuit boards 120 may be disposed on one side of one or more batteries 110, and at least a portion of the antenna of the bus antenna 140 may be disposed between the batteries 110 and the multiple data acquisition circuit boards 120.

[0073] The acquisition component 132 is electrically connected to the battery 110 (in Figure 2 The dashed line between the data acquisition component 132 and the battery 110 (illustrated in the image) allows for the acquisition of state information of the battery 110, such as voltage, current, and temperature. It should be understood that although in... Figure 2 The diagram shows a data acquisition component 132 electrically connected to a battery 110. However, in other embodiments, the data acquisition component 132 and the battery 110 do not need to correspond one-to-one. Multiple data acquisition components 132 can be electrically connected to the same battery 110, and the multiple data acquisition components 132 can collect different state information of the battery 110 respectively. Alternatively, multiple batteries 110 can be electrically connected to the same data acquisition component 132, and the data acquisition component 132 can collect the state information of the multiple batteries 110.

[0074] To transmit battery status information, the acquisition device 130 also includes an acquisition antenna 131. The acquisition antenna 131 can communicate with the bus antenna 140. In one example, the acquisition antenna 131 can act as a transmitting antenna, and the bus antenna 140 as a receiving antenna, thereby transmitting the battery 110 status information to the bus antenna 140. In another example, the acquisition antenna 131 can also act as a receiving antenna, and the bus antenna 140 as a transmitting antenna, thereby receiving control signals for the battery 110 transmitted by the bus antenna 140.

[0075] Although Figure 2 While the two components are shown as separate designs, in other embodiments, the acquisition component 132 and the acquisition antenna 131 may also be integrated together for a unified design, such as being designed in the same chip or module.

[0076] It should be understood that Figure 2 This is merely an example; in other embodiments, the relative positions of the acquisition component 132 and the acquisition antenna 131 can also be designed in other ways. The acquisition component 132 and the acquisition antenna 131 do not need to be configured in a one-to-one correspondence; multiple acquisition components 132 can be electrically connected to the same acquisition antenna 131, or one acquisition component 132 can be electrically connected to multiple acquisition antennas 131. This application does not limit this.

[0077] At least a portion of the bus antenna 140 is disposed between the battery 110 and the acquisition circuit board 120, that is, on the side of the acquisition circuit board 120 facing the battery 110 (in Figure 2 (This is shown as the area below the acquisition circuit board 120). The distance between the bus antenna 140 and the acquisition antenna 131 can be set to a distance that enables electromagnetic coupling (i.e., communication via electromagnetic waves), thereby enabling wireless transmission between the two.

[0078] As mentioned above, the battery 110, the acquisition circuit board 120, and the acquisition device 130 do not need to be configured to correspond one-to-one with each other. In some embodiments, a single acquisition circuit board 120 can be provided for multiple batteries 110, and multiple acquisition devices 130 can also be provided on each acquisition circuit board 120. Figure 8 An example of a battery device 100 including multiple batteries 110 is illustrated. Figure 8 As shown, multiple batteries 110 are arranged in the same orientation. Each acquisition circuit board 120 is positioned on the same side of the multiple batteries 110. From Figure 8 As can be seen, there are certain gaps between the multiple acquisition circuit boards 120. Apart from the portions corresponding to these gaps, the remaining portion of the bus antenna 140 is positioned between all the acquisition circuit boards 120 and all the batteries 110, thus allowing it to interact with the acquisition antennas on the acquisition circuit boards 120. Figure 8 (Not shown in the diagram) Communication is conducted. It should be understood that, although in Figure 8 The multiple batteries 110 are schematically arranged in a straight line, but in other embodiments, the arrangement of the multiple batteries 110 can also be in other forms. The acquisition circuit board 120 can be designed according to the arrangement of the multiple batteries 110, and the bus antenna 140 can also be designed according to the arrangement of the multiple batteries 110, for example, it can also be designed in a curved form.

[0079] In some embodiments, the acquisition antenna 131 can be connected to the acquisition circuit board 120 by means of welding, crimping, printing, etc., to achieve good contact between the acquisition antenna 131 and the acquisition circuit board 120, and reduce signal attenuation or interference problems caused by poor contact.

[0080] In some embodiments, a protective film may be coated on the surface of the acquisition antenna 131 to protect it and reduce corrosion and damage caused by the external environment. The protective film may be made of materials with excellent protective properties, such as polyurethane, thereby effectively extending the service life of the acquisition antenna 131.

[0081] In some embodiments, a certain space may be provided around the acquisition antenna 131 and / or the bus antenna 140, thereby reducing the reflection and interference of wireless signals, while reducing the influence of other components in the battery device 100 on the antenna.

[0082] Placing at least part of the bus antenna between the battery and the acquisition circuit board can effectively isolate moisture from the environment in which the battery is located. Especially when the battery is in a relatively humid environment, it can reduce the probability of moisture condensing around the antenna and reduce the risk of problems such as short circuits and degraded communication quality.

[0083] According to some embodiments of this application, the acquisition antenna 131 is disposed on the side of the acquisition circuit board 120 near the bus antenna 140.

[0084] Figures 3 to 4 as well as Figure 7 The dashed box indicates a partial cross-section of the battery device 100. For example... Figures 2 to 4 as well as Figure 7 As shown, the acquisition antenna 131 can be positioned on the side of the acquisition circuit board 120 facing the bus antenna 140, meaning that the acquisition antenna 131 and the bus antenna 140 are positioned on the same side of the acquisition circuit board 120, both located between the acquisition circuit board 120 and the battery 110. This layout ensures that the acquisition antenna 131 and the bus antenna 140 are not obstructed by the acquisition circuit board 120, thus preventing any obstruction to the electromagnetic coupling between them. Furthermore, since they are also positioned between the acquisition circuit board 120 and the battery 110, the isolation and protection of the acquisition antenna 131 are improved, effectively reducing the risk of moisture accumulation or condensation dripping onto the acquisition antenna 131.

[0085] In some embodiments, such as Figure 2 and Figure 3 As shown, the bus antenna 140 can be disposed between the acquisition antenna 131 and the battery 110, which can effectively achieve electromagnetic coupling between the bus antenna 140 and the acquisition antenna 131. In some embodiments, such as Figure 4 and Figure 7 As shown, the bus antenna 140 may also not be positioned between the acquisition antenna 131 and the battery 110, but rather it may be positioned together with the acquisition antenna 131 between the acquisition circuit board 120 and the battery 110, for example... Figure 4 and Figure 7 The data acquisition antenna 131 and the bus antenna 140, as illustrated, correspond to each other in a direction parallel to the data acquisition circuit board 120. By flexibly setting the relative positions of the bus antenna and the data acquisition antenna, the electromagnetic coupling strength between them can be adjusted, making the battery device suitable for different application scenarios.

[0086] Placing the acquisition antenna and bus antenna on the same side of the acquisition circuit board can reduce the distance between the acquisition antenna and the bus antenna, reduce obstructions between them, improve wireless communication quality, and reduce the impact of humid environments on the acquisition antenna.

[0087] According to some embodiments of this application, the acquisition component 132 is disposed on the side of the acquisition circuit board near the bus antenna 140.

[0088] Depending on factors such as battery structure and the layout design of the acquisition circuit board, the acquisition component 132 can be positioned at different locations on the acquisition circuit board 120. For example... Figure 3 and Figure 4 As shown, the acquisition component 132 can be disposed between the acquisition circuit board 120 and the battery 110, and is disposed on the same side of the acquisition circuit board 120 as the bus antenna 140.

[0089] In some embodiments, the acquisition component 132 can be fixedly connected to the acquisition circuit board 120 and / or the battery 110 by means of fasteners or adhesive, thereby enhancing the fixation effect on the acquisition component 132.

[0090] The flexible placement of the acquisition components on the acquisition circuit board allows for a reasonable design of the acquisition circuit board according to usage requirements, effectively expanding the application scenarios of the acquisition circuit board.

[0091] According to some embodiments of this application, reference is made to Figure 5 The battery device 100 also includes a medium 133.

[0092] Medium 133 is configured to fill at least part of the acquisition component 132 between the battery 110.

[0093] When the acquisition component 132 is positioned on the side of the acquisition circuit board 120 near the bus antenna 140, such as Figures 2 to 4 As shown, due to the gap between the acquisition component 132 and the battery 110, if the acquisition component 132 lacks sufficient support, it may be affected by gravity or battery vibration, easily leading to displacement or collisions. Therefore, a medium 133 can be filled between the acquisition component 132 and the battery 110, such as... Figure 5 As shown. Medium 133 provides support and protection for acquisition component 132.

[0094] It should be understood that, although in Figure 5 The medium is shown to be filled between the entire acquisition component 132 and the battery 110. The specific filling position of the medium 133 can be designed according to the structure of the battery device 110. For example, it can be filled between part of the acquisition component 132 and the battery 110, or it can be filled between the acquisition antenna 131, bus antenna 140 and other components and the battery 110 in addition to being filled between the acquisition component 132 and the battery 110. This application does not limit this.

[0095] In some embodiments, the medium 133 may include different materials such as foam, plastic film, and colloid.

[0096] Placing a medium between the acquisition component and the battery can provide support and shock absorption for the acquisition component, reducing the risk of damage to the acquisition component due to external forces.

[0097] According to some embodiments of this application, reference is made to Figure 6 The acquisition component 132 includes a sampling element 1322 and a chip 1321.

[0098] The sampling element 1322 is configured to be electrically connected to the battery 110 to collect the status information of the battery 110.

[0099] Chip 1321 is configured to be electrically connected to sampling element 1322 to process state information of battery 110.

[0100] Medium 133 is configured to fill between sampling element 1322 and battery 110.

[0101] In some embodiments, the sampling element 1322 can be used to collect state information such as voltage and temperature of each battery 110, and may include sensors, for example. The sampling element 1322 can transmit the collected state information of the battery 110 to the chip 1321, which processes the state information. The chip 1321 may be, for example, an analog front-end chip (AFE). Figure 6 This is a top view of the acquisition circuit board 120, illustrating an example of an acquisition component 132 mounted on the acquisition circuit board 120, such as... Figure 6 As shown, the acquisition component 132 is disposed on the acquisition circuit board 120, and each chip 1321 can be electrically connected to one or more sampling elements 1322. It should be understood that the number of sampling elements 1322 and chips 1321 included in the acquisition component 132 and their connection relationship can be designed according to factors such as the testing requirements of the battery, and this application does not limit them.

[0102] Since the chip 1321 is typically soldered onto the acquisition circuit board 120, a relatively secure fixation effect can be achieved. Therefore, only the medium 133 needs to be filled between the sampling element 1322 and the battery 110 to achieve fixation and shock absorption of the sampling element through the medium.

[0103] Filling the space between the sampling element and the battery with a medium can effectively protect the sampling element and provide good support and shock absorption while reducing the amount of medium used.

[0104] According to some embodiments of this application, the medium 133 includes a flexible material.

[0105] Flexible materials can protect the acquisition component 132. Due to their flexibility, when battery vibration or other situations occur, the medium will deform accordingly, reducing damage to the acquisition component 132 and thus protecting it.

[0106] Using flexible materials to fill the space between the battery and the acquisition component can effectively reduce the impact of the medium on the acquisition component and reduce the risk of the medium damaging the acquisition component.

[0107] According to some embodiments of this application, medium 133 includes a waterproof material.

[0108] Waterproof materials can isolate moisture. During the use of the battery device 100, especially when the battery device 100 is in a humid environment, the waterproof material will not absorb a large amount of moisture from the air, while still providing a certain degree of waterproofing.

[0109] Using waterproof materials as the medium can reduce the amount of moisture absorbed by the medium in a humid environment, thereby reducing the risk of failure of the acquisition components due to water absorption by the medium.

[0110] According to some embodiments of this application, the acquisition component 132 is disposed on the side of the acquisition circuit board 120 away from the bus antenna 140.

[0111] like Figure 7 As shown, the acquisition component 132 can also be located on the side of the acquisition circuit board 120 facing away from the battery 110. In this case, the acquisition component 132 and the acquisition antenna 131 are respectively located on both sides of the acquisition circuit board 120. The acquisition antenna 131 and the bus antenna 140 are located on the same side of the acquisition circuit board 120, and the acquisition component 132 is located on the other side of the acquisition circuit board 120.

[0112] The flexible placement of the acquisition components on the acquisition circuit board allows for a reasonable design of the acquisition circuit board according to usage requirements, effectively expanding the application scenarios of the acquisition circuit board.

[0113] According to some embodiments of this application, the bus antenna 140 and the acquisition antenna 131 communicate via electromagnetic waves. The distance between the bus antenna 140 and the acquisition antenna 131 is set to be less than or equal to the wavelength of the electromagnetic wave.

[0114] In the wireless communication between the bus antenna 140 and the acquisition antenna 131, information will be transmitted via electromagnetic waves (also known as radio waves). The wavelength of a radio wave is related to its frequency.

[0115] When the distance between the bus antenna 140 and the acquisition antenna 131 is less than or equal to one wavelength of the electromagnetic wave, they can be considered as near-field coupling. For example, when the wavelength of the electromagnetic wave is 120 mm, the distance between the bus antenna 140 and the acquisition antenna 131 can be set to be less than 120 mm.

[0116] Setting the distance between the bus antenna and the acquisition antenna to be less than or equal to the wavelength of the electromagnetic waves used for communication between them enables near-field coupling, thereby achieving wireless communication between the bus antenna and the acquisition device. Adjusting the distance between the bus antenna and the acquisition antenna allows for adjustment of the coupling strength between them, reducing the risk of bus antenna overload.

[0117] According to some embodiments of this application, the distance between the bus antenna 140 and the acquisition antenna 131 is set to be less than or equal to one-tenth of the wavelength of the electromagnetic wave.

[0118] When the distance between the bus antenna 140 and the acquisition antenna 131 is less than or equal to one-tenth of the electromagnetic wave wavelength, stronger electromagnetic near-field coupling will occur between them.

[0119] Reducing the distance between the bus antenna and the acquisition antenna can enhance the coupling effect between them and improve the quality of wireless communication.

[0120] According to some embodiments of this application, the bus antenna 140 includes at least two transmission lines.

[0121] In embodiments of this application, a transmission line can refer to any slender conductor capable of transmitting signals. In some embodiments, a transmission line may include the form of a cable, wire, twisted pair cable, or microstrip line.

[0122] In some embodiments, during communication, a current is generated in the bus antenna 140 to convert electromagnetic waves into differential signals for transmission. The transmission lines in the bus antenna 140 may include differential signal lines. Multiple transmission lines can convert electromagnetic waves communicating with the acquisition antenna 131 into corresponding differential signals. In addition to differential signal lines, the transmission lines in the bus antenna 140 may also include shielding wires or shielding conductors, which can reduce interference from surrounding signals to the signals transmitted in the bus antenna 140. In this example, the shielding wires or shielding conductors may be arranged side-by-side with the differential signal lines or may be wrapped around the differential signal lines.

[0123] In some embodiments, the acquisition antenna 131 and the bus antenna 140 form a balun. The signal transmitted in the acquisition antenna 131 is an unbalanced electrical signal, which is converted into a balanced electrical signal at the bus antenna 140. At least two transmission lines are provided in the bus antenna 140. Since the differential signal transmitted on each transmission line has a different polarity, electromagnetic interference (EMI) signals on each transmission line can be mutually canceled. This design method can suppress common-mode interference signals and enhance EMI immunity.

[0124] Using a bus antenna with at least two transmission lines can improve its immunity to interference signals.

[0125] According to some embodiments of this application, at least a portion of the antenna of the bus antenna 140 is configured to have an orthographic projection on the acquisition circuit board 120 and an orthographic projection on the battery 110.

[0126] In the embodiments of this application, "orthographic projection" refers to the projection produced by parallel projection lines perpendicular to the projection plane. For example... Figure 2 As shown, with the acquisition circuit board 120 as the projection surface (i.e., with... Figure 2 When the lower surface of the acquisition circuit board 120 is used as the projection surface, projection is made with projection lines perpendicular to the projection surface. The bus antenna 140 can obtain a projection on the acquisition circuit board 120, that is, a normal projection onto the acquisition circuit board 120. Correspondingly, when the battery 110 is used as the projection surface (i.e., with the lower surface of the acquisition circuit board 120 as the projection surface), projection is made with projection lines perpendicular to the projection surface. Figure 2 When the upper surface of the battery 110 is the projection surface, projection is made with projection lines perpendicular to the projection surface. The bus antenna 140 can obtain a projection on the battery 110, that is, an orthographic projection on the battery 110. This also means that at least a portion of the antenna of the bus antenna 140 can be covered between the acquisition circuit board 120 and the battery 110.

[0127] By configuring at least a portion of the bus antenna to have an orthographic projection on both the acquisition circuit board and the battery, the acquisition circuit board can provide protection for this portion of the antenna, reducing the risk of moisture dripping into the antenna.

[0128] According to some embodiments of this application, the acquisition antenna 131 includes an inverted-F antenna.

[0129] The inverted-F antenna (IFA) is a variation of the monopole antenna. It is formed by bending a monopole antenna into an inverted L shape and then adding a short-circuit branch to form an inverted F structure. It has the advantages of small size, simple structure, easy matching, and low manufacturing cost.

[0130] An inverted-F antenna consists of a horizontal arm and a vertical arm. The horizontal arm is used for receiving and transmitting signals, while the vertical arm is used for grounding. By properly designing the length and width of the horizontal and vertical arms, precise control of the wireless communication frequency (which can also be understood as the wavelength of radio waves) can be achieved, thus meeting the requirements of wireless communication.

[0131] In some embodiments, the inverted-F antenna can be made of metals with good electrical conductivity, such as copper or aluminum.

[0132] Using an inverted-F antenna as the data acquisition antenna can be well adapted to the internal space layout of the battery device, reducing production costs and improving production efficiency. At the same time, the inverted-F antenna can achieve good communication performance in a small size, meeting the dual requirements of battery devices for antenna miniaturization and high performance.

[0133] According to some embodiments of this application, the acquisition antenna 131 includes a microstrip antenna.

[0134] Microstrip antennas typically consist of a dielectric substrate, a radiator, and a ground plane. The shape of the radiator can be varied according to requirements. Microstrip antennas are small in size, lightweight, easy to integrate, and have low manufacturing costs.

[0135] In some embodiments, the acquisition antenna 131 may be designed as an inverted-F antenna in the form of a microstrip antenna.

[0136] Using a microstrip antenna as the data acquisition antenna can effectively reduce the size of the data acquisition antenna and reduce the difficulty of antenna manufacturing.

[0137] According to some embodiments of this application, the acquisition antenna 131 is printed on the acquisition circuit board 120.

[0138] The acquisition antenna 131 can be fixed on the acquisition circuit board 120 by printing. In some embodiments, the acquisition circuit board 120 can be a printed circuit board (PCB). The acquisition antenna 131 can be in the form of a microstrip antenna, with the required radiator and ground plane printed on the acquisition circuit board 120.

[0139] By integrating the acquisition antenna onto the acquisition circuit board using a printed method, the acquisition antenna can be fixed, effectively improving the integration of the battery device.

[0140] According to some embodiments of this application, the acquisition antenna 131 is configured to be at least partially embedded in the acquisition circuit board 120.

[0141] The acquisition antenna 131 can be fixed by embedding it into the acquisition circuit board 120. In one example, the acquisition circuit board 120 may have a groove for mounting the acquisition antenna 131, so that the acquisition antenna 131 can be embedded therein.

[0142] Embedding the acquisition antenna into the acquisition circuit board can fix the acquisition antenna in place, reducing the risk of displacement and damage to the acquisition antenna due to force.

[0143] According to some embodiments of this application, the acquisition circuit board 120 includes a flexible circuit board and / or a rigid circuit board.

[0144] Flexible printed circuit boards (FPCs) are printed circuit boards made with polyimide or polyester film as the substrate. They are characterized by high wiring density, light weight, thinness, and good bendability. FPCs also possess excellent flexibility, allowing them to adapt to certain deformations when subjected to external pressure or impact. Rigid circuit boards, on the other hand, are typically made of rigid materials such as epoxy glass cloth laminate (FR4) and phenolic resin foil board (FR1), exhibiting greater rigidity and support strength. Both flexible and rigid circuit boards possess excellent insulation properties, reducing the risk of short circuits and other abnormalities.

[0145] The acquisition circuit board 120 can be made of different circuit board materials according to usage requirements. For example, when the acquisition circuit board 120 needs to have good flexibility, a flexible circuit board can be used; when the acquisition circuit board 120 needs to have strong support, a rigid circuit board can be used. In some embodiments, different areas of the acquisition circuit board 120 can use circuit boards of different materials. For example, for the location where chips and sampling elements are set, a rigid circuit board can be used to provide better load-bearing capacity for the components and improve integration, while for the location where signal lines are set, a flexible circuit board can be used to improve flexibility, reduce the risk of signal line breakage, and reduce the weight of the acquisition circuit board 120.

[0146] The acquisition circuit board 120 can be a single-layer printed circuit board or a multi-layer printed circuit board. In some embodiments, the acquisition circuit board 120 is a single-layer printed circuit board, and wiring can be performed on both sides of the circuit board. In other embodiments, the acquisition circuit board 120 is a multi-layer printed circuit board, and wiring can be performed on the multi-layer board. Through reasonable wiring design, the stability and reliability of signal transmission can be improved.

[0147] In some embodiments, vias may be provided in certain critical locations of the acquisition circuit board 120 to connect printed conductors between different layers. The vias can be configured to minimize their impact on signal transmission and reduce the risk of signal reflection and interference.

[0148] In some embodiments, the surface of the acquisition circuit board 120 may be coated with a moisture-proof material to further improve its moisture-proof performance, reduce the risk of moisture seeping into the circuit board, and reduce short circuit or corrosion problems caused by high ambient humidity.

[0149] By selecting different types of circuit boards, the mounting of the data acquisition device can be achieved according to the usage requirements, which helps to improve the integration of the battery device and / or reduce the weight of the battery device.

[0150] According to some embodiments of this application, reference is made to Figure 4 The battery device 100 also includes a mounting bracket 150.

[0151] The mounting bracket 150 is connected to the acquisition circuit board 120 and / or the battery 110 and is configured to fix the bus antenna 140 between the acquisition circuit board 120 and the battery 110.

[0152] The mounting bracket 150 can be designed according to the internal space of the battery device 100. The mounting bracket 150 can take the form of grooves, clips, or printing. For example, grooves can be etched on the acquisition circuit board 120 to embed the bus antenna 140 for fixation, or clips can be used to fix the bus antenna 140. Figure 4As shown.

[0153] The mounting bracket 150 can be fixedly connected to the data acquisition circuit board 120, or to the battery 110, or it can be partially connected to the data acquisition circuit board 120 and partially connected to the battery 110. It should be understood that when the battery device 100 includes multiple batteries 110 and multiple data acquisition circuit boards 120, multiple mounting brackets 150 can also be provided. Multiple mounting brackets 150 can all be fixedly connected to the data acquisition circuit board 120, all be fixedly connected to the battery 110, or be fixedly connected to both the data acquisition circuit board 120 and the battery 110 respectively; this application does not limit this.

[0154] The fixing bracket 150 can be made of elastic and flexible materials such as silicone or rubber, which can provide sufficient support for the bus antenna 140, reduce damage to the bus antenna 140, and reduce the pulling of the bus antenna 140 when the battery 110 expands.

[0155] Using a fixed bracket to secure the bus antenna can reduce the risk of antenna displacement due to vibration or external forces, thus maintaining better communication quality.

[0156] According to some embodiments of this application, reference is made to Figure 9 The battery device 100 also includes a housing 160.

[0157] The housing is configured to provide a space for the battery 110, the acquisition circuit board 120, the acquisition device 130, and the bus antenna 140.

[0158] like Figure 9 As shown, the housing 160 of the battery device 100 can be used to house the battery 110, the acquisition circuit board 120, the acquisition device 130, and the bus antenna 140. In some embodiments, the housing may be provided with connectors so that the battery device 100 can be connected to other components of the electrical device to realize the transmission of electrical energy.

[0159] It should be understood that, although in Figure 9 The battery 110, acquisition circuit board 120, acquisition device 130, and bus antenna 140 are all schematically located inside the housing 160. However, in other embodiments, the positional relationship of the battery 110, acquisition circuit board 120, acquisition device 130, bus antenna 140, and housing 160 can be designed according to the structure of the battery device 110. For example, the battery 110, acquisition circuit board 120, acquisition device 130, and bus antenna 140 can be partially exposed outside the housing 160. This application does not limit this.

[0160] In some embodiments, the acquisition circuit board 120 may also be mounted on the housing 160 to fix the acquisition circuit board 120.

[0161] By housing the battery, acquisition circuit board, acquisition device, and bus antenna, the battery, acquisition circuit board, acquisition device, and bus antenna components can be protected by the housing, which helps to improve the reliability of the battery device.

[0162] According to some embodiments of this application, reference is made to Figure 9 The housing includes a cover plate 161. The acquisition circuit board 120 is at least partially disposed between the cover plate 161 and the bus antenna 140.

[0163] Figure 9 The diagram illustrates an example of the relative positions of the acquisition circuit board 120 and the cover plate 161. (See diagram for example.) Figure 9 As shown, the cover plate 161 and the bus antenna 140 are respectively disposed on both sides of the acquisition circuit board 120. When the battery device 100 is placed in a relatively humid environment, water vapor may condense on the cover plate 161, forming condensate. At this time, the acquisition circuit board 120 can prevent condensate from dripping onto the bus antenna 140.

[0164] It should be understood that, although in Figure 9 In the illustration, the acquisition circuit board 120 is entirely located below the cover plate 161. However, in other embodiments, only part of the acquisition circuit board 120 may be located between the cover plate 161 and the bus antenna 140, as long as it can effectively isolate condensate.

[0165] Placing the acquisition circuit board between the cover plate and the bus antenna allows the acquisition circuit board to be isolated from the moisture condensed at the cover plate, reducing the impact of moisture on the antenna and lowering the risk of short circuits, communication quality degradation, and other problems.

[0166] According to some embodiments of this application, reference is made to Figure 10 The battery 110 includes a positive terminal 111 and a negative terminal 112. The positive terminal 111 and the negative terminal 112 are located on the same side of the battery 110 and face the acquisition circuit board 120.

[0167] In some embodiments, the battery 110 may include a prismatic battery or the like. The two electrode terminals of the battery 110 are disposed on the same side of the battery. The battery 110 may be arranged such that both electrode terminals face the acquisition circuit board 120, as shown below. Figure 10 As shown.

[0168] It should be understood that Figure 10The positional relationship between the two electrode terminals and the acquisition circuit board 120 shown is merely an example, although in Figure 10 The width of the acquisition circuit board 120 is shown to be able to cover a portion of the positive terminal 111 and a portion of the negative terminal 112. In other embodiments, the acquisition circuit board 120 may also be configured not to cover the positive terminal 111 and the negative terminal 112, or may be configured to cover the entire positive terminal 111 and the entire negative terminal 112, etc. This application does not limit this.

[0169] When the battery device 100 includes multiple batteries 110, the arrangement of the multiple batteries 110 can be designed according to factors such as the structure of the battery device 100. For example, they can all be arranged sequentially with the same orientation, and the positive and negative terminals of each battery 110 can face the acquisition circuit board 120. Figure 8 As shown.

[0170] In some embodiments, the acquisition circuit board 120 can be connected to the positive and / or negative terminals of any battery 110, thereby enabling the acquisition circuit board 120 to be fixed.

[0171] When the positive and negative terminals are located on the same side of the battery, the acquisition circuit board can be set to face the positive and negative terminals of the battery. This makes it easier to install and fix the acquisition circuit board, reducing the risk of wireless communication abnormalities caused by the displacement of the acquisition circuit board.

[0172] According to some embodiments of this application, reference is made to Figure 11 The battery 110 includes a positive terminal 111 and a negative terminal 112. The positive terminal 111 and the negative terminal 112 are respectively disposed on different sides of the battery 110, and the positive terminal 111 or the negative terminal 112 faces the acquisition circuit board 120.

[0173] In some embodiments, the battery 110 may include a cylindrical battery or the like. Two electrode terminals of the battery 110 are disposed on two sides of the battery, for example, the two electrode terminals are respectively disposed on the two top surfaces of the cylindrical battery. The battery 110 may be arranged such that one of its electrode terminals faces the acquisition circuit board 120.

[0174] It should be understood that Figure 11 The positional relationship between the two electrode terminals and the acquisition circuit board 120 shown is merely an example, although in Figure 11 The width of the acquisition circuit board 120 is shown to be able to cover the entire positive terminal 111. In other embodiments, the acquisition circuit board 120 may also be configured to cover a part of the positive terminal 111, or to cover the entire or part of the negative terminal 112, etc. This application does not limit this.

[0175] When the battery device 100 includes multiple batteries 110, the arrangement of the multiple batteries 110 can be designed according to factors such as the structure of the battery device 100. For example, they can all be arranged sequentially with the same orientation, with the positive terminal of each battery 110 facing the acquisition circuit board 120, or the negative terminal of each battery facing the acquisition circuit board 120. Alternatively, the multiple batteries 110 can be arranged sequentially, with the positive terminals of some batteries 110 facing the acquisition circuit board 120 and the negative terminals of the other batteries 110 facing the acquisition circuit board 120.

[0176] In some embodiments, the acquisition circuit board 120 can be connected to the positive and / or negative terminals of any battery 110, thereby enabling the acquisition circuit board 120 to be fixed.

[0177] When the positive and negative terminals are located on different sides of the battery, the acquisition circuit board can be set to face either the positive or negative terminal of the battery. The position of the acquisition circuit board can be flexibly designed according to factors such as the structural design of the battery device.

[0178] According to some embodiments of this application, reference is made to Figure 12 The battery device 100 also includes a battery management system 170.

[0179] The battery management system 170 is electrically connected to the bus antenna 140 and is used to control the battery 110.

[0180] The Battery Management System (BMS) enables intelligent management of each battery 110 in the battery device 100 and monitors the status of each battery 110. The BMS 170 is electrically connected to the bus antenna 140. In some embodiments, the bus antenna 140 can transmit battery status information received from the acquisition antenna 131 to the BMS 170, thereby enabling monitoring of the battery 110's status. In other embodiments, control commands issued by the BMS 170 can be transmitted to the acquisition antenna 131 via the bus antenna 140, thereby enabling control of the batteries 110.

[0181] By electrically connecting the battery management system to the bus antenna, and through wireless communication between the bus antenna and the acquisition antenna, the battery status can be monitored and controlled, reducing the number of cables required in the battery device and thus helping to reduce the size of the battery device.

[0182] Based on the same technical concept, embodiments of this application provide an electrical device. The electrical device includes the battery device 100 from the above embodiments. The battery device 100 is used to provide electrical energy.

[0183] The embodiments of the electrical device can be referred to the embodiments of the battery device 100, and the repeated parts will not be described again.

[0184] A specific embodiment of this application is described below. It should be understood that this specific embodiment is described for illustrative purposes only and should not be construed as limiting the scope of this application.

[0185] like Figures 2 to 12 As shown, the battery device 100 includes a battery 110, a data acquisition circuit board 120, a data acquisition device 130, a bus antenna 140, and a battery management system 170. The data acquisition device 130 is mounted on the data acquisition circuit board 120 and includes a data acquisition component 132 and a data acquisition antenna 131. The data acquisition component 132 is electrically connected to the battery 110 and can be used to acquire the status information of the battery 110. The status information acquired by the data acquisition component 132 is transmitted to the data acquisition antenna 131, and then to the bus antenna 140. At least a portion of the bus antenna 140 and the data acquisition antenna 131 are positioned between the battery 110 and the data acquisition circuit board 120, and they can communicate via electromagnetic waves. The distance between the bus antenna 140 and the data acquisition antenna 131 is set to be less than or equal to the wavelength of the electromagnetic wave.

[0186] The acquisition circuit board 120 includes a flexible circuit board and / or a rigid circuit board. The bus antenna 140 includes at least two transmission lines and is fixed between the acquisition circuit board 120 and the battery 110 by a mounting bracket 150. The acquisition antenna 131 includes an inverted F antenna.

[0187] The battery management system 170 is electrically connected to the bus antenna 140. The bus antenna 140 can transmit the status information of the battery 110 received from the acquisition antenna 131 to the battery management system 170, thereby enabling the monitoring of the status of the battery 110. Control commands issued by the battery management system 170 can be transmitted to the acquisition antenna 131 through the bus antenna 140, thereby enabling the control of the battery 110.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application 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 application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Battery; The acquisition circuit board is configured to house the acquisition device. The acquisition device includes an acquisition component and an acquisition antenna. The acquisition component is configured to be electrically connected to the battery and to acquire and process the status information of the battery. The acquisition antenna is used to transmit the status information. At least a portion of the bus antenna is disposed between the battery and the acquisition circuit board and is configured to communicate with the acquisition antenna to transmit the status information acquired by the acquisition device.

2. The battery device according to claim 1, characterized in that, The acquisition antenna is located on the side of the acquisition circuit board near the bus antenna.

3. The battery device according to claim 1 or 2, characterized in that, The acquisition component is located on the side of the acquisition circuit board near the bus antenna.

4. The battery device according to claim 3, characterized in that, The battery device also includes: The medium is configured to fill at least a portion of the acquisition component between the battery.

5. The battery device according to claim 4, characterized in that, The acquisition component includes: A sampling element is configured to be electrically connected to the battery to collect the battery's state information; A chip is configured to be electrically connected to the sampling element and to process the state information of the battery; The medium is configured to fill the space between the sampling element and the battery.

6. The battery device according to claim 4 or 5, characterized in that, The medium includes flexible materials.

7. The battery device according to claim 4 or 5, characterized in that, The medium includes waterproof materials.

8. The battery device according to claim 1 or 2, characterized in that, The acquisition component is located on the side of the acquisition circuit board away from the bus antenna.

9. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The bus antenna and the acquisition antenna communicate via electromagnetic waves, and the distance between the bus antenna and the acquisition antenna is set to be less than or equal to the wavelength of the electromagnetic waves.

10. The battery device according to claim 9, characterized in that, The distance between the bus antenna and the acquisition antenna is set to be less than or equal to one-tenth of the wavelength of the electromagnetic wave.

11. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The bus antenna includes at least two transmission lines.

12. The battery device according to any one of claims 1-2 and 4-5, characterized in that, At least a portion of the bus antenna is configured to have an orthographic projection on the acquisition circuit board and an orthographic projection on the battery.

13. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The acquisition antenna includes an inverted-F antenna.

14. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The acquisition antenna includes a microstrip antenna.

15. The battery device according to claim 14, characterized in that, The acquisition antenna is printed on the acquisition circuit board.

16. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The acquisition antenna is configured to be at least partially embedded in the acquisition circuit board.

17. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The acquisition circuit board includes a flexible circuit board and / or a rigid circuit board.

18. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The battery device also includes: A mounting bracket, connected to the acquisition circuit board and / or the battery, is configured to secure the bus antenna between the acquisition circuit board and the battery.

19. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The battery device also includes: The housing is configured to provide a space for the battery, the acquisition circuit board, the acquisition device and the bus antenna.

20. The battery device according to claim 19, characterized in that, The housing includes a cover plate, and the acquisition circuit board is at least partially disposed between the cover plate and at least a portion of the antenna of the bus antenna.

21. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The battery includes a positive terminal and a negative terminal, which are located on the same side of the battery and face the acquisition circuit board.

22. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The battery includes a positive terminal and a negative terminal, which are respectively disposed on different sides of the battery, and the positive terminal or the negative terminal faces the acquisition circuit board.

23. The battery device according to any one of claims 1-2 and 4-5, characterized in that, The battery device also includes: A battery management system, electrically connected to the bus antenna, is used to control the battery.

24. An electrical appliance, characterized in that, The electrical device includes a battery device as described in any one of claims 1-23, the battery device being used to provide electrical energy.

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