Battery management system, battery system and electric device

Abstract

The utility model discloses a battery management system, a battery system and an electric device. The battery management system comprises at least one slave control assembly, a data transmission line and a master control assembly, each slave control assembly comprises at least one sampling element and a carrier communication element, and each sampling element is used for collecting data of at least one battery cell; the distance between the data transmission line and each carrier communication element is smaller than a preset distance, and the data transmission line is used for transmitting data of at least one battery cell in a carrier communication mode; and the main control assembly is used for controlling the charging and discharging of the at least one battery cell based on the received data of the at least one battery cell. Therefore, the data transmission line can transmit the data of the battery cell to the main control assembly in a carrier communication mode, so that the main control assembly can control charging and discharging of the battery cell based on the received data of the battery cell, and the reliability of battery cell data transmission and battery cell charging and discharging control can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery management system, a battery system, and an electrical device. Background Art

[0002] Energy conservation and emission reduction are key to sustainable development, which in turn promotes the adjustment of energy structure and drives the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology. Due to its advantages such as high energy density, good cycle life, high operating voltage, environmental friendliness, and low self-discharge, it has been widely used in portable electronics, electric vehicles, and energy storage systems.

[0003] The battery management system needs to collect data from battery cells during use to monitor their working status. However, how to transmit the data through effective data transmission methods has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The main purpose of this application is to provide a battery management system, a battery system and an electrical device, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] In order to solve the above problems, the present application provides a battery management system, which includes at least one slave control component, a data transmission line and a master control component. Each slave control component includes at least one sampling element and a carrier communication element. Each sampling element is used to collect data of at least one battery cell. The distance between the data transmission line and each carrier communication element is less than a preset distance. The data transmission line is used to transmit data of at least one battery cell through carrier communication. The master control component is used to control the charging and discharging of at least one battery cell based on the data received from at least one battery cell. Through the above embodiment, the distance between the data transmission line and each carrier communication element is less than a preset distance, which facilitates communication between the data transmission line and each carrier communication element. The data collected by the sampling element on the battery cell can be communicated with the data transmission line through the carrier communication element and the data transmission line, thereby enabling the data transmission line to transmit the data of the battery cell to the master control component through carrier communication, so that the master control component can control the charging and discharging of the battery cell based on the data received from the battery cell, which can improve the reliability of battery cell data transmission and battery cell charging and discharging control.

[0006] In some embodiments, a battery management system includes an assembly, comprising multiple covering portions, each covering portion covering at least a portion of a sidewall of a battery cell, and the assembly is used to mount a carrier communication component. Thus, each covering portion of the assembly covers at least a portion of a sidewall of a battery cell, thereby improving the stability of the assembly between the assembly and the battery cell. The assembly is used to mount the carrier communication component, and the assembly enables the carrier communication component and the battery cell, as well as the carrier communication component and the data transmission line, to be relatively fixed, thereby improving the reliability of battery cell data transmission and battery cell charge and discharge control.

[0007] In some embodiments, the battery cell is a cylindrical battery cell, and the covering portion includes a sidewall portion and an end face portion. The sidewall portion extends along the axial direction of the battery cell, the sidewall portion covers at least a portion of the circumferential sidewall of the battery cell, the end face portion covers at least a portion of the end face of the battery cell, and the end face portion and the sidewall portion are connected to form a cavity to accommodate the battery cell. Thus, by the sidewall portion covering at least a portion of the circumferential sidewall of the battery cell, the end face portion covering at least a portion of the end face of the battery cell, and the end face portion and the sidewall portion being connected to form a cavity to accommodate the battery cell, the covering portion can provide better protection for the cylindrical battery cell, and the sidewall portion and the end face portion can cooperate to allow the covering portion to be more stably fixed to the cylindrical battery cell.

[0008] In some embodiments, the assembly includes a mounting component connected to the side of the multiple coverings facing away from the battery cell, and the mounting component is used to mount at least one sampling element. Thus, the mounting component is connected to the side of the multiple coverings facing away from the battery cell, and the mounting component is used to mount at least one sampling element. This facilitates relative fixation of the sampling element and the battery cell via the mounting component, facilitating the collection of battery cell data via the sampling element.

[0009] In some embodiments, the mounting component includes multiple mounting sub-sections, each of which is located on a side of the covering portion facing away from the battery cell, and is used to mount a sampling element. Thus, each mounting sub-section is located on a side of the covering portion facing away from the battery cell, and is used to mount a sampling element. This facilitates forming each mounting sub-section and the covering portion so that the sampling element is relatively fixed to the battery cell via the mounting component, thereby facilitating the acquisition of battery cell data through the sampling element.

[0010] In some embodiments, the assembly includes multiple first harness fixing portions, each of which is disposed on a side of a mounting sub-portion facing away from the covering portion, and the multiple first harness fixing portions collectively secure the data transmission line. Thus, the multiple first harness fixing portions collectively secure the data transmission line, thereby improving the relative stability of the data transmission line and the carrier communication component. Furthermore, the first harness fixing portions being disposed on a side of a mounting sub-portion facing away from the covering portion can shorten the distance between the sampling component and the data transmission line, facilitating data exchange between the sampling component and the data transmission line.

[0011] In some embodiments, each first harness fixing portion includes two spaced-apart wire-gripping portions. When viewed in a direction perpendicular to the spacing between the two wire-gripping portions, the sampling element is at least partially located between the two wire-gripping portions, and the data transmission line is routed through the two wire-gripping portions. Thus, the sampling element is at least partially located between the two wire-gripping portions, and the data transmission line is routed through the two wire-gripping portions. This further shortens the spacing between the sampling element and the data transmission line, facilitating data exchange between the sampling element and the data transmission line.

[0012] In some embodiments, the assembly includes multiple second wire harness fixing portions, which are spaced apart on the side of the mounting component facing away from the covering portion. The multiple second wire harness fixing portions collectively secure the data transmission line. Thus, the multiple second wire harness fixing portions collectively secure the data transmission line, improving the stability of the connection between the data transmission line and the battery cell. Furthermore, the second wire harness fixing portions, located on the side of the mounting component facing away from the covering portion, can shorten the distance between the sampling element and the data transmission line, facilitating data exchange between the sampling element and the data transmission line.

[0013] In some embodiments, each sampling element is configured to correspond to a battery cell. When viewed in a direction perpendicular to the spacing between the two second wiring harness fixing portions, each sampling element is at least partially located in the spacing between the two second wiring harness fixing portions. This further shortens the distance between the sampling element and the data transmission line, facilitating data exchange between the sampling element and the data transmission line.

[0014] In some embodiments, there are multiple assembly members, and the number of assembly members corresponds to the number of cell groups into which the battery cells are divided. The multiple covering portions of each assembly member cover at least a portion of the circumferential sidewalls of the multiple battery cells in a cell group. Thus, the multiple covering portions of each assembly member cover at least a portion of the circumferential sidewalls of the multiple battery cells in a cell group. This assembly member can simplify the arrangement of the battery cells and reduce the complexity of the data transmission line arrangement.

[0015] In some embodiments, the assembly includes multiple connecting wires, each connecting a cell electrode post to a corresponding sampling element. This facilitates the sampling element to collect cell data via the connecting wires and electrode posts, improves the stability of the connection between the sampling element and the cell, and also facilitates charging of the sampling element via the connecting wires and electrode posts.

[0016] To solve the above problems, the present application provides a battery system, which includes the above-mentioned battery management system and at least one battery cell.

[0017] In some embodiments, at least one battery cell is divided into at least one battery cell group, each battery cell group includes a plurality of battery cells arranged sequentially along a first direction, and the data transmission line includes at least one first transmission line segment, each first transmission line segment corresponds to a battery cell group, the first transmission line segment is located on the same side of the plurality of battery cells in the corresponding battery cell group, and the first transmission line segment extends along the first direction. Thus, the plurality of battery cells in the battery cell group are arranged sequentially along the first direction, so that a greater number of battery cells can be arranged within a limited space, thereby improving the energy density of the battery system. Furthermore, each first transmission line segment corresponds to a battery cell group, the first transmission line segment is located on the same side of the plurality of battery cells in the corresponding battery cell group, and the first transmission line segment extends along the first direction, which can improve the routing efficiency of the data transmission line, reduce the complexity of the wiring harness for arranging the data transmission line, and facilitate data exchange between the sampling element and the data transmission line.

[0018] In some embodiments, the number of battery cell groups is at least two, and at least two battery cell groups are arranged along a second direction. The data transmission line includes at least one second transmission line segment, each second transmission line segment respectively connecting the ends of the first transmission line segments corresponding to two adjacent battery cell groups, wherein the first direction and the second direction are not parallel. Thus, the arrangement of at least two battery cell groups along the second direction enables the arrangement of more battery cells within a limited space, thereby improving the energy density of the battery system. In addition, each second transmission line segment respectively connects the ends of the first transmission line segments corresponding to two adjacent battery cell groups, reducing the complexity of the data transmission line arrangement and improving the routing efficiency of the data transmission lines between multiple battery cell groups.

[0019] In some embodiments, each first transmission line segment has a first end and a second end in the first direction, and the spacing between the two first ends and the spacing between the two second ends of two adjacent first transmission line segments in the second direction are both greater than the spacing between the first and second ends of the two first transmission line segments. Each second transmission line segment is connected to the first ends corresponding to two adjacent first transmission line segments, or each second transmission line segment is connected to the second ends corresponding to two adjacent first transmission line segments. Thus, each second transmission line segment is connected to the first ends corresponding to two adjacent first transmission line segments, or each second transmission line segment is connected to the second ends corresponding to two adjacent first transmission line segments. This can reduce the complexity of the wiring harness for the data transmission line arrangement, further shorten the routing length of the data transmission line, and improve the routing efficiency of the data transmission line between multiple battery groups.

[0020] To solve the above problems, the present application provides an electrical device, which includes the battery management system as described above, or the electrical device includes the battery system as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application;

[0023] Figure 2 is a schematic block diagram of a battery system according to one or more embodiments;

[0024] Figure 3 is a first structural schematic diagram of a battery system according to one or more embodiments of the present application;

[0025] Figure 4 yes Figure 3 A schematic diagram of the top view of the battery system shown;

[0026] Figure 5 is a second structural schematic diagram of a battery system according to one or more embodiments of the present application;

[0027] Figure 6 yes Figure 5 A schematic diagram of the top view of the battery system shown;

[0028] Figure 7 yes Figure 5 An enlarged schematic diagram of the structure within the middle dashed box;

[0029] Figure 8 Schematic diagram of the disassembled structure of battery cells and assemblies according to one or more embodiments of the present application.

[0030] Reference numerals: vehicle 1; battery system 10; controller 20; motor 30;

[0031] Battery management system 11; master control component 100; slave control component 200; sampling element 210; carrier communication element 220; battery cell 300; battery cell group 310; electrode column 320; data transmission line 400; first transmission line segment 410; first end 411; second end 412; second transmission line segment 420; assembly part 500; covering portion 510; side wall portion 511; end face portion 512; mounting component 520; mounting sub-portion 521; second wire harness fixing portion 530; first wire harness fixing portion 540; wire clamping portion 541; connecting wire 550; first direction X; second direction Y. DETAILED DESCRIPTION

[0032] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0034] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0037] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0038] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0040] Currently, market developments indicate that batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0041] Batteries mentioned in this field can be categorized as either primary batteries or rechargeable batteries, depending on whether they are rechargeable. Primary batteries are also called "disposable" batteries or primary batteries because once they are depleted, they cannot be recharged and must be discarded. Rechargeable batteries are also called secondary batteries, secondary batteries, or storage batteries. Rechargeable batteries are manufactured using different materials and processes than primary batteries. Their advantage is that they can be reused multiple times after charging, and their output current capacity is higher than that of most primary batteries. Common types of rechargeable batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries offer advantages such as light weight, high capacity (1.5 to 2 times that of nickel-metal hydride batteries of the same weight), no memory effect, and a very low self-discharge rate. Consequently, despite their relatively high price, they are widely used. Lithium-ion batteries are also widely used in pure electric vehicles and hybrid vehicles. While the capacity of lithium-ion batteries used for these applications is relatively low, they offer higher output, higher charging current, and a longer service life, albeit at a higher cost.

[0042] The batteries described in the embodiments of this application are either rechargeable batteries or disposable batteries. The embodiments disclosed herein will be described primarily using lithium-ion batteries as an example. It should be understood that the embodiments disclosed herein are applicable to any other suitable type of rechargeable battery. The batteries described in the embodiments disclosed herein can be directly or indirectly used in appropriate devices to power such devices.

[0043] The present application provides an electrical device, which may include but is not limited to mobile phones, tablets, laptops, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, and the like. The electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the spacecraft may include airplanes, rockets, space shuttles, and spacecraft. The electrical device may include a battery system, which may provide electrical energy to the device to achieve corresponding functions.

[0044] The present application also provides an electric vehicle, which may include a battery system.

[0045] Please refer to Figure 1 , Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application.

[0046] Vehicle 1 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle. Vehicle 1 is internally provided with a battery system 10, which can be located at the bottom, front, or rear of vehicle 1. Battery system 10 can be used to power vehicle 1, for example, as an operating power source for vehicle 1. Vehicle 1 can also include a controller 20 and a motor 30. Controller 20 is used to control battery system 10 to power motor 30, for example, to meet the power requirements of vehicle 1 during startup, navigation, and driving.

[0047] In some embodiments of the present application, the battery system 10 can serve not only as an operating power source for the vehicle 1 , but also as a driving power source for the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

[0048] Specifically, in order to improve the performance of the electrical device, the present application also provides a battery system, see Figure 2 , Figure 2 is a schematic block diagram of a battery system according to one or more embodiments.

[0049] The battery system 10 includes a battery management system 11 and at least one battery cell 300 .

[0050] The shape of the battery cell 300 may include but is not limited to square, cylindrical or any other shape. In the battery system 10, there may be multiple battery cells 300, and the multiple battery cells 300 may be connected in series, in parallel or in mixed connection. Mixed connection means that the multiple battery cells 300 are connected in series and in parallel. The multiple battery cells 300 may be directly connected in series, in parallel or in mixed connection, and then the whole formed by the multiple battery cells 300 is accommodated in the box of the battery system 10; of course, the battery system 10 may also be a battery module formed by first connecting multiple battery cells 300 in series, in parallel or in mixed connection, and then the multiple battery modules are connected in series, in parallel or in mixed connection to form a whole, and then accommodated in the box of the battery system 10. The battery system 10 may also include other structures. For example, the battery system 10 may also include a busbar component for realizing electrical connection between the multiple battery cells 300.

[0051] The battery cell 300 is the smallest unit constituting the battery system 10. The battery cell 300 may include a housing, an electrode assembly, and other functional components. The housing includes an end cap and a casing.

[0052] An end cap is a component that fits over the opening of the housing to isolate the internal environment of the battery cell 300 from the external environment. The shape of the end cap can be adapted to the shape of the housing to fit the housing. Optionally, the end cap can be made of a material with a certain degree of hardness and strength (such as an aluminum alloy). This prevents deformation during compression and collision, providing the battery cell 300 with greater structural strength and improved safety. The end cap can be provided with functional components such as electrode terminals. Electrode terminals can be used to electrically connect to the electrode assembly for inputting or outputting electrical energy into or out of the battery cell 300. In some embodiments, the electrode terminals can include poles. These poles can include positive and negative poles, used for current output and connection to external circuits. In some embodiments, the end cap can also be provided with explosion-proof components to release internal pressure when the internal pressure or temperature of the battery cell 300 reaches a threshold. The end cap can be made of a variety of materials, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, and plastic. In some embodiments, an insulating member may be provided inside the end cap to isolate the electrical connection components in the housing from the end cap to reduce the risk of short circuit.

[0053] The shell is a component used to cooperate with the end cap to form the internal environment of the battery cell 300, wherein the formed internal environment can be used to accommodate the electrode assembly, electrolyte and other components. The shell and the end cap can be independent components, and an opening can be set on the shell, and the internal environment of the battery cell 300 is formed by covering the opening with the end cap at the opening. Without limitation, the end cap and the shell can also be integrated. Specifically, the end cap and the shell can form a common connection surface before other components are put into the shell, and when the interior of the shell needs to be encapsulated, the end cap is covered with the shell. The shell can be of various shapes and sizes, such as rectangular, cylindrical, hexagonal, etc. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The material of the shell can be various, for example, the material of the shell includes but is not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0054] The electrode assembly is a component in the battery cell 300 where electrochemical reactions occur. One or more electrode assemblies may be contained in the housing. The electrode assembly is mainly formed by winding or stacking positive and negative electrode sheets, and an isolator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly, and the parts of the positive and negative electrode sheets without active materials each constitute a tab. The positive tab and the negative tab may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs connect the electrode terminals to form a current loop.

[0055] The Battery Management System (BMS) 11 significantly impacts the safe operation of electric vehicles, the selection of vehicle control strategies, the choice of charging modes, and operating costs. Whether operating or charging, the BMS monitors the status of the battery system 10 in real time and diagnoses faults. It also communicates this information to the vehicle controller or charger via a bus, enabling the adoption of appropriate control strategies to achieve effective and efficient use of the battery system 10. However, how to effectively transmit data from the battery cells 300 has become a pressing technical challenge.

[0056] In order to solve the technical problems existing in the related art, the battery management system 11 of the present application can transmit data with at least one battery cell 300 through carrier communication to control the charging and discharging of at least one battery cell 300.

[0057] Specifically, see Figure 2The battery management system 11 includes at least one slave control component 200, a data transmission line 400 and a master control component 100. Each slave control component 200 includes at least one sampling element 210 and a carrier communication element 220. Each sampling element 210 is used to collect data of at least one battery cell 300. The distance between the data transmission line 400 and each carrier communication element 220 is less than a preset distance. The data transmission line 400 is used to transmit data of at least one battery cell 300 through carrier communication. The master control component 100 is used to control the charging and discharging of at least one battery cell 300 based on the data received from at least one battery cell 300.

[0058] The sampling element 210 and the carrier communication element 220 can be integrated and arranged on a carrier body, or the sampling element 210 and the carrier communication element 220 can be arranged separately to exist as two independent functional elements. The corresponding relationship between the sampling element 210 and the battery cell 300 can include one sampling element 210 collecting data from one battery cell 300, or one sampling element 210 collecting data from multiple battery cells 300 at the same time, or data from one battery cell 300 being collected by multiple sampling elements 210 at the same time. The data of the battery cell 300 can include but is not limited to temperature data, voltage data, and pressure data of the battery cell 300, etc. The corresponding relationship between the sampling element 210 and the carrier communication element 220 can include one sampling element 210 corresponding to one carrier communication element 220, or one sampling element 210 corresponding to multiple carrier communication elements 220, or one carrier communication element 220 corresponding to multiple sampling elements 210. The carrier communication element 220 can exchange data with the sampling element 210. The data exchange between the carrier communication element 220 and the sampling element 210 may be performed in a manner including but not limited to optical communication, Bluetooth communication, radio frequency communication, carrier communication, or wired transmission.

[0059] The spacing between the data transmission line 400 and each carrier communication element 220 can be set based on actual conditions. The spacing between the two only needs to be sufficient to enable data transmission between the data transmission line 400 and the carrier communication element 220 via carrier communication. The data transmission line 400 can be used to communicate with each carrier communication element 220 separately, so that the data transmission line 400 can exchange data with at least one battery cell 300 via carrier communication. For example, the carrier communication element 220 can transmit data from at least one battery cell 300 to the data transmission line 400 via carrier communication. The data transmission line 400 can also transmit control signals to the carrier communication element 220 via carrier communication.

[0060] The main control component 100 may include, but is not limited to, a battery management unit (BMU) of the battery management system 11, or may also be a central control platform of an automobile or energy storage system. The main control component 100 may exchange data with the data transmission line 400 via wired or wireless transmission. For example, the main control component 100 may be electrically connected to the data transmission line 400 to enable data exchange between the main control component 100 and the data transmission line 400 via wired transmission. Alternatively, the main control component 100 and the data transmission line 400 may exchange data via wireless transmission methods such as optical communication, Bluetooth communication, radio frequency communication, or carrier communication.

[0061] The sampling component 210 can collect data from the battery cells 300 and transmit the data from the battery cells 300 to the carrier communication component 220. The carrier communication component 220 transmits the data from the battery cells 300 to the data transmission line 400 via carrier communication. The data transmission line 400 then transmits the data from the battery cells 300 to the main control component 100. The main control component 100 can generate a control signal based on the received data from the battery cells 300, so that the main control component 100 can control the charging and discharging of at least one battery cell 300 through the control signal. For example, the main control component 100 can transmit the control signal to the carrier communication component 220 via the data transmission line 400. The carrier communication component 220 then transmits the control signal to the sampling component 210, and then transmits the control signal to the at least one battery cell 300 via the sampling component 210. For another example, the main control component 100 can be directly connected to communicate with at least one battery cell 300, and then directly transmit the control signal to the at least one battery cell 300.

[0062] Through the above embodiment, the distance between the data transmission line 400 and each carrier communication element 220 is less than the preset distance, which facilitates the communication between the data transmission line 400 and each carrier communication element 220. The sampling element 210 collects the data of the battery cell 300 and can communicate with the carrier communication element 220 and the data transmission line 400, thereby enabling the data transmission line 400 to transmit the data of the battery cell 300 to the main control component 100 through carrier communication, so that the main control component 100 can control the charging and discharging of the battery cell 300 based on the received data of the battery cell 300, thereby improving the reliability of data transmission of the battery cell 300 and charging and discharging control of the battery cell 300.

[0063] Further, see Figure 3 and Figure 4 , Figure 3 is a first structural schematic diagram of a battery system according to one or more embodiments of the present application; Figure 4 yes Figure 3 The schematic diagram of the top structure of the battery system 10 is shown.

[0064] The battery management system 11 includes an assembly 500, which includes multiple covering portions 510. Each covering portion 510 covers at least a portion of the sidewall of a battery cell 300. The assembly 500 is used to mount the carrier communication component 220. The assembly 500 can be of any shape. The carrier communication component 220 can be fixedly mounted on the assembly 500. The assembly 500 is then fixed to at least one battery cell 300, thereby ensuring relative stability between the carrier communication component 220 and the battery cell 300, between the carrier communication component 220 and the data transmission line 400, and between the battery cells 300. Specifically, the shape of the covering portion 510 can match the shape of the battery cell 300. For example, when the battery cell 300 is a prismatic battery cell 300, the covering portion 510 can form a cavity that matches the prismatic battery cell 300, thereby allowing the covering portion 510 to cover at least a portion of the sidewall of at least one battery cell 300. When the battery cell 300 is a cylindrical battery cell 300, the covering portion 510 can form a cavity that matches the cylindrical battery cell 300, thereby allowing the covering portion 510 to cover at least a portion of the sidewall of at least one battery cell 300. The covering portion 510 and the battery cell 300 can have a one-to-one correspondence, that is, one covering portion 510 covers at least a portion of the sidewall of one battery cell 300. Thus, each covering portion 510 of the assembly part 500 covers at least part of the side wall of a battery cell 300, which can improve the stability of the assembly between the assembly part 500 and the battery cell 300. The assembly part 500 is used to install the carrier communication element 220. The assembly part 500 can keep the carrier communication element 220 and the battery cell 300, as well as the carrier communication element 220 and the data transmission line 400 relatively fixed, thereby improving the reliability of data transmission of the battery cell 300 and charge and discharge control of the battery cell 300.

[0065] Furthermore, the assembly 500 includes a mounting component 520, which is connected to the side of the multiple covering portions 510 facing away from the battery cell 300. The mounting component 520 is used to mount at least one sampling element 210. The mounting component 520 can be a plate-shaped structure and can be connected to multiple covering portions 510, so that the multiple covering portions 510 and the mounting component 520 together form the assembly 500. The mounting component 520 can simultaneously mount multiple sampling elements 210. For example, the mounting component 520 can be provided with a receiving groove, and the sampling element 210 can be received in the receiving groove, thereby securing the sampling element 210 to the mounting component 520. The mounting component 520 can also simultaneously mount the carrier communication element 220 and the sampling element 210. Alternatively, when the sampling element 210 and the carrier communication element 220 are integrated, the carrier communication element 220 and the sampling element 210 can be simultaneously mounted on the mounting component 520. Thus, the mounting component 520 is connected to the side of the multiple covering portions 510 facing away from the battery cell 300. The mounting component 520 is used to mount at least one sampling element 210, which can facilitate the relative fixation of the sampling element 210 and the battery cell 300 through the mounting component 520, and facilitate the collection of data of the battery cell 300 through the sampling element 210.

[0066] See also Figure 5 and Figure 6 , Figure 5 is a second structural schematic diagram of a battery system according to one or more embodiments of the present application; Figure 6 yes Figure 5 The schematic diagram of the top structure of the battery system 10 is shown.

[0067] The mounting component 520 includes multiple mounting sub-portions 521, each of which is located on the side of the covering portion 510 facing away from the battery cell 300. The mounting sub-portions 521 are used to mount the sampling element 210. The mounting sub-portions 521 and the covering portion 510 can have a one-to-one correspondence, i.e., one mounting sub-portion 521 is located on the side of the covering portion 510 facing away from the battery cell 300, and one mounting sub-portion 521 can be used to mount one sampling element 210. This allows the mounting sub-portion 521, the covering portion 510, and the sampling element 210 to be considered a single integral component mounted on a single battery cell 300. Specifically, one mounting sub-portion 521 can be integrally formed with one covering portion 510. Therefore, each mounting sub-portion 521 is provided on a side of a covering portion 510 away from the battery cell 300 . The mounting sub-portion 521 is used to mount the sampling element 210 , which can facilitate the formation of each mounting sub-portion 521 and the covering portion 510 , so that the sampling element 210 is relatively fixed to the battery cell 300 through the mounting component 520 , thereby facilitating the collection of data of the battery cell 300 through the sampling element 210 .

[0068] Combine Figure 7 , Figure 7 yes Figure 5 Enlarged schematic diagram of the structure within the dotted box.

[0069] The assembly 500 includes a plurality of first harness fixing portions 540, each of which is disposed on a side of a mounting sub-portion 521 away from the covering portion 510. The plurality of first harness fixing portions 540 collectively fix the data transmission line 400. The first harness fixing portions 540 may include, but are not limited to, a snap-in slot, a fixing hole, and the like. The data transmission line 400 can be fixed to the first wire harness fixing portion 540 by binding, clamping, bonding, etc., and multiple first wire harness fixing portions 540 can be arranged according to actual conditions. Each first wire harness fixing portion 540 can fix a portion of the data transmission line 400, and then the data transmission line 400 is fixed together by multiple first wire harness fixing portions 540, so that the relative stability of the data transmission line 400 and the carrier communication element 220 can be improved through the first wire harness fixing portion 540, and the first wire harness fixing portion 540 is arranged on a side of a mounting sub-portion 521 away from the covering portion 510, which can shorten the distance between the sampling element 210 and the data transmission line 400, and facilitate data exchange between the sampling element 210 and the data transmission line 400.

[0070] Furthermore, each first wire harness fixing portion 540 includes two spaced-apart wire-engaging portions 541. When viewed in a direction perpendicular to the spacing between the two wire-engaging portions 541, the sampling element 210 is at least partially located between the two wire-engaging portions 541, and the data transmission line 400 is passed through the two wire-engaging portions 541. Both wire-engaging portions 541 may have a slot structure whose shape and dimensions match those of the data transmission line 400, allowing the data transmission line 400 to be secured within the slots of the two wire-engaging portions 541, with a portion of the data transmission line 400 spanning between the two wire-engaging portions 541. When the sampling element 210 is located between the two wire-engaging portions 541, the sampling element 210 and the data transmission line 400 located between the two wire-engaging portions 541 are aligned, thereby facilitating the sampling element 210 to transmit data from the battery cell 300 to the data transmission line 400 via carrier communication via the carrier communication element 220. Thus, the sampling element 210 is at least partially located between the two line-holding portions 541 , and the data transmission line 400 passes through the two line-holding portions 541 , which can further shorten the distance between the sampling element 210 and the data transmission line 400 and facilitate data exchange between the sampling element 210 and the data transmission line 400 .

[0071] See also Figure 8 , Figure 8 Schematic diagram of the disassembled structure of battery cells and assemblies according to one or more embodiments of the present application.

[0072] The battery cell 300 is a cylindrical battery cell 300. The covering portion 510 includes a sidewall portion 511 and an end face portion 512. The sidewall portion 511 extends axially along the battery cell 300 and covers at least a portion of the circumferential sidewall of the battery cell 300. The end face portion 512 covers at least a portion of the end face of the battery cell 300. The end face portion 512 and the sidewall portion 511 connect to form a cavity for accommodating the battery cell 300. The sidewall portion 511 may have a groove structure. The wall surface of the groove structure may be semi-cylindrical, and the shape of the groove structure may match the shape of the outer shell of the cylindrical battery cell 300, thereby allowing the sidewall portion 511 to cover a portion of the circumferential sidewall of the battery cell 300. Alternatively, the sidewall portion 511 may be cylindrical, and the internal hollow shape of the sidewall portion 511 may be cylindrical, and this shape may match the shape of the outer shell of the cylindrical battery cell 300, so that the sidewall portion 511 covers the entire circumferential sidewall of the battery cell 300. The end face portion 512 can be one or two. When there is one end face portion 512, one end face portion 512 can be connected to one end of the side wall portion 511; when there are two end face portions 512, the two end face portions 512 can be connected to the two ends of the side wall portion 511 respectively, so that the side wall portion 511 and the end face portion 512 together form a cylindrical or semi-cylindrical cavity structure. Thus, the side wall portion 511 covers at least part of the circumferential side wall of the battery cell 300, and the end face portion 512 covers at least part of the end face of the battery cell 300. The end face portion 512 and the side wall portion 511 are connected to form a cavity to accommodate the battery cell 300. The covering portion 510 can better protect the cylindrical battery cell 300. At the same time, the side wall portion 511 and the end face portion 512 can cooperate to make the covering portion 510 more stably fixed to the cylindrical battery cell 300.

[0073] In some embodiments, the assembly 500 includes a plurality of connecting wires 550, each connecting wire 550 connecting an electrode column 320 of a battery cell 300 and a corresponding sampling element 210. The electrode columns 320 of the battery cell 300 may be disposed on the end caps of the battery cell 300. The electrode columns 320 may include positive and negative electrodes, which are spaced apart. There may be two connecting wires 550, one connecting wire 550 having one end connected to the positive electrode column and the other end connected to the sampling element 210. Another connecting wire 550 having one end connected to the negative electrode column and the other end connected to the sampling element 210 forms a current loop between the sampling element 210 and the battery cell 300. This allows the battery cell 300 to provide electrical energy to the sampling element 210 via the connecting wires 550, and allows the sampling element 210 to collect data from the battery cell 300 or transmit control signals to the battery cell 300 via the connecting wires 550. The connecting wire 550 can be attached to the outer surface of the covering portion 510, partially embedded within the covering portion 510, or completely buried within the covering portion 510. When the assembly 500 also includes a mounting component 520, the connecting wire 550 can be attached to the outer surface of the mounting component 520, partially embedded within the mounting component 520, or completely buried within the mounting component 520. This facilitates the sampling element 210 to collect data from the battery cell 300 via the connecting wire 550 and the electrode column 320, improves the stability of the connection between the sampling element 210 and the battery cell 300, and also facilitates charging of the sampling element 210 via the connecting wire 550 and the electrode column 320.

[0074] See also Figure 3 and Figure 4 The assembly 500 includes a plurality of second wire harness securing portions 530, which are spaced apart and arranged on the side of the mounting member 520 facing away from the covering portion 510. The plurality of second wire harness securing portions 530 collectively secure the data transmission line 400. In this embodiment, the mounting member 520 is a plate-shaped structure, and the plurality of second wire harness securing portions 530 are all located on the side of the mounting member 520 facing away from the covering portion 510. The second wire harness securing portions 530 may include, but are not limited to, snap-in slots, securing holes, and the like. The data transmission line 400 can be fixed to the second wire harness fixing portion 530 by binding, clamping, bonding, etc., and multiple second wire harness fixing portions 530 can be arranged according to actual conditions. Each second wire harness fixing portion 530 can fix a portion of the data transmission line 400, and then the data transmission line 400 is fixed together by multiple second wire harness fixing portions 530, so that the relative stability of the data transmission line 400 and the carrier communication element 220 can be improved through the second wire harness fixing portion 530, and the second wire harness fixing portion 530 is arranged on the side of the mounting component 520 away from the covering portion 510, which can shorten the distance between the sampling element 210 and the data transmission line 400, and facilitate data exchange between the sampling element 210 and the data transmission line 400.

[0075] Furthermore, each sampling element 210 is configured to correspond to a battery cell 300. When viewed in a direction perpendicular to the spacing between the two second wire harness fixing portions 530, each sampling element 210 is at least partially located between the two second wire harness fixing portions 530. Each second wire harness fixing portion 530 may span between two sampling elements 210. Each second wire harness fixing portion 530 may be provided with a wire retaining slot extending along the spacing between the two sampling elements 210. This slot allows the data transmission cable 400 to pass over the sampling element 210 when the data transmission cable 400 is inserted into the slot. This allows the sampling element 210 to correspond to the data transmission cable 400 located between the two second wire harness fixing portions 530. This facilitates the sampling element 210 to transmit data from the battery cell 300 to the data transmission cable 400 via carrier communication via the carrier communication element 220. Thus, each sampling element 210 is at least partially located between the two second harness fixing portions 530 , which can further shorten the distance between the sampling element 210 and the data transmission line 400 , facilitating data exchange between the sampling element 210 and the data transmission line 400 .

[0076] In some embodiments, there are multiple assembly parts 500, and the number of assembly parts 500 corresponds to the number of cell groups 310 into which the battery cells 300 are divided. The multiple covering portions 510 of each assembly part 500 cover at least a portion of the circumferential sidewalls of the multiple battery cells 300 in a cell group 310. The number of battery cells 300 can be multiple, and the multiple battery cells 300 can be divided into at least one group, each cell group 310 including at least two battery cells 300. The covering portions 510 of each assembly part 500 form an integrated structure together with a plate-shaped mounting component 520. One covering portion 510 can cover at least a portion of the circumferential sidewalls of a battery cell 300, thereby relatively fixing the carrier communication component 220 and the battery cell 300, the carrier communication component 220 and the data transmission line 400, and the battery cells 300. Thus, the multiple covering portions 510 of each assembly part 500 cover at least part of the peripheral side walls of the multiple battery cells 300 in a battery cell group 310, which can simplify the arrangement of the battery cells 300 through the assembly part 500 and reduce the complexity of the arrangement of the data transmission lines 400.

[0077] Furthermore, at least one battery cell 300 is divided into at least one battery cell group 310, the battery cell group 310 includes a plurality of battery cells 300 arranged in sequence along a first direction X, and the data transmission line 400 includes at least one first transmission line segment 410, each first transmission line segment 410 corresponds to a battery cell group 310, and the first transmission line segment 410 is located on the same side of the plurality of battery cells 300 of the corresponding battery cell group 310, and the first transmission line segment 410 is extended along the first direction X.

[0078] Each cell group 310 may include a plurality of cells 300. The number of cells 300 in a cell group 310 may be two, three, four or more. The number of cell groups 310 may also be one, two, three or more. For example, Figure 3 and Figure 4 As shown, there are two battery cell groups 310 , each including eight battery cells 300 , which are arranged sequentially along the first direction X. The number of first transmission line segments 410 corresponds to the number of battery cell groups 310 . Each first transmission line segment 410 extends along the first direction X, allowing the first transmission line segment 410 to pass through the sampling element 210 corresponding to each battery cell 300 . Thus, the multiple battery cells 300 of the battery cell group 310 are arranged in sequence along the first direction X, so that a larger number of battery cells 300 can be arranged in a limited space, thereby improving the energy density of the battery system 10, and each first transmission line segment 410 corresponds to a battery cell group 310, and the first transmission line segment 410 is located on the same side of the multiple battery cells 300 of the corresponding battery cell group 310. The first transmission line segment 410 is extended along the first direction X, which can improve the routing efficiency of the data transmission line 400, reduce the complexity of the wiring harness of the data transmission line 400, and facilitate data interaction between the sampling element 210 and the data transmission line 400.

[0079] Furthermore, the number of battery cell groups 310 is at least two, and at least two battery cell groups 310 are arranged along the second direction Y. The data transmission line 400 includes at least one second transmission line segment 420, and each second transmission line segment 420 is respectively connected to the end of the first transmission line segment 410 corresponding to two adjacent battery cell groups 310, wherein the first direction X and the second direction Y are not parallel.

[0080] The number of cell groups 310 can be set according to actual conditions. The cell groups 310 can be arranged along the second direction Y. In some feasible embodiments, the first direction X can be perpendicular to the second direction Y. Figure 3 and Figure 4 As shown, the number of cell groups 310 can be two, and the two cell groups 310 are arranged in sequence along the second direction Y. The number of first transmission line segments 410 is two, and the number of second transmission line segments 420 is one. One first transmission line segment 410 corresponds to one cell group 310, and both ends of the second transmission line segment 420 are respectively connected to the two ends of the two first transmission line segments 410 that are closer. Figure 5 and Figure 6As shown, the number of cell groups 310 can be three, and the three cell groups 310 are arranged sequentially along the second direction Y. The number of first transmission line segments 410 is three, and the number of second transmission line segments 420 is two. One first transmission line segment 410 corresponds to one cell group 310, and the two ends of one second transmission line segment 420 are respectively connected to the two ends of the two first transmission line segments 410 that are closer. Alternatively, in some other embodiments, the two ends of the second transmission line segment 420 can be respectively connected to any two ends of two adjacent first transmission line segments 410. Thus, at least two cell groups 310 are arranged along the second direction Y, which allows for the arrangement of more cell cells 300 within a limited space, thereby improving the energy density of the battery system 10. In addition, each second transmission line segment 420 is connected to the ends of the first transmission line segments 410 corresponding to two adjacent cell groups 310, reducing the complexity of the wiring harness for the data transmission lines 400 and improving the routing efficiency of the data transmission lines 400 between multiple battery groups.

[0081] Furthermore, each first transmission line segment 410 has a first end 411 and a second end 412 in the first direction X. In the second direction Y, the distance between the two first ends 411 and the distance between the two second ends 412 of two adjacent first transmission line segments 410 are both greater than the distance between the first ends 411 and the second ends 412 of the two first transmission line segments 410. Each second transmission line segment 420 is connected to the first ends 411 corresponding to two adjacent first transmission line segments 410, or each second transmission line segment 420 is connected to the second ends 412 corresponding to two adjacent first transmission line segments 410. Figure 5 and Figure 6 As shown, the number of cell groups 310 can be three, and the three cell groups 310 are arranged in sequence along the second direction Y. The number of first transmission line segments 410 is three, and the number of second transmission line segments 420 is two. One first transmission line segment 410 corresponds to one cell group 310, and the first end 411 of the first transmission line segment 410 can be as follows: Figure 6 The upper end of the first transmission segment shown in FIG. 4 and the second end 412 of the first transmission segment 410 may be as shown in FIG. Figure 6 At the lower end of the first transmission segment shown, the spacing between the two first ends 411 and the spacing between the two second ends 412 of two adjacent first transmission line segments 410 in the second direction Y are both greater than the spacing between the first ends 411 and the second ends 412 of the two first transmission line segments 410. When each second transmission line segment 420 is respectively connected to the first ends 411 corresponding to two adjacent first transmission line segments 410, or each second transmission line segment 420 is respectively connected to the second ends 412 corresponding to two adjacent first transmission line segments 410, the complexity of the wiring harness of the data transmission line 400 can be reduced, the routing length of the data transmission line 400 can be further shortened, and the routing efficiency of the data transmission line 400 between multiple battery groups can be improved.

[0082] In some other embodiments, the battery cells 300 may be placed vertically, such as when the axis of the battery cells 300 is perpendicular to the horizontal plane, the assembly 500 may be located between the two groups of battery cell groups 310, and the second transmission line segment 420 may surround the battery cells 300 at the ends to respectively connect to the first ends 411 corresponding to the two adjacent first transmission line segments 410, or to respectively connect to the second ends 412 corresponding to the two adjacent first transmission line segments 410.

[0083] To sum up, the distance between the data transmission line 400 and each carrier communication element 220 is less than the preset distance, which facilitates communication between the data transmission line 400 and each carrier communication element 220. The sampling element 210 collects data of the battery cell 300 and communicates with the data transmission line 400 through the carrier communication element 220, so that the data transmission line 400 can transmit the data of the battery cell 300 to the main control component 100 through carrier communication, so that the main control component 100 can control the charging and discharging of the battery cell 300 based on the received data of the battery cell 300, which can improve the reliability of data transmission of the battery cell 300 and charge and discharge control of the battery cell 300.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery management system, characterized in that: The battery management system includes: At least one slave control component, each slave control component includes at least one sampling element and a carrier communication element, each of the sampling elements is used to collect data of at least one battery cell; a data transmission line, the distance between the data transmission line and each of the carrier communication elements being less than a preset distance, the data transmission line being used to transmit data of the at least one battery cell by means of carrier communication; A main control component is used to control the charging and discharging of the at least one battery cell based on the received data of the at least one battery cell.

2. The battery management system according to claim 1, characterized in that: The battery management system includes an assembly part, which includes a plurality of covering parts, each of which covers at least a portion of a side wall of the battery cell. The assembly part is used to install the carrier communication component.

3. The battery management system according to claim 2, characterized in that: The battery cell is a cylindrical battery cell, and the covering portion includes a side wall portion and an end face portion. The side wall portion extends along the axial direction of the battery cell, the side wall portion covers at least a portion of the circumferential side wall of the battery cell, and the end face portion covers at least a portion of the end face of the battery cell. The end face portion and the side wall portion are connected to form a cavity to accommodate the battery cell.

4. The battery management system according to claim 2, characterized in that: The assembly includes a mounting component connected to a side of the plurality of covering portions facing away from the battery core, and the mounting component is used to mount at least one of the sampling elements.

5. The battery management system according to claim 4, characterized in that: The mounting component includes a plurality of mounting sub-portions, each of which is provided on a side of the covering portion away from the battery cell, and the mounting sub-portion is used for mounting the sampling element.

6. The battery management system according to claim 5, characterized in that: The assembly comprises a plurality of first wire harness fixing portions, each of which is arranged on a side of the mounting sub-portion away from the covering portion, and the plurality of first wire harness fixing portions jointly fix the data transmission line.

7. The battery management system according to claim 6, characterized in that: Each of the first wire harness fixing portions includes two wire clamping portions spaced apart from each other. When viewed in a direction perpendicular to the spacing between the two wire clamping portions, the sampling element is at least partially located between the two wire clamping portions, and the data transmission line passes through the two wire clamping portions.

8. The battery management system according to claim 4, characterized in that: The assembly member includes a plurality of second wire harness fixing portions, which are arranged at intervals on a side of the mounting component away from the covering portion, and the plurality of second wire harness fixing portions jointly fix the data transmission line.

9. The battery management system according to claim 8, characterized in that: Each sampling element is used to be arranged corresponding to one of the battery cells. When viewed along a direction perpendicular to the interval between the two second wire harness fixing portions, each sampling element is at least partially located at the interval between the two second wire harness fixing portions.

10. The battery management system according to claim 4, characterized in that: There are multiple assemblies, and the number of the assemblies corresponds to the number of cell groups into which the cell is divided. The multiple covering portions of each assembling part cover at least part of the circumferential side walls of the multiple cell groups in one cell group.

11. The battery management system according to claim 2, characterized in that: The assembly includes a plurality of connecting wires, each of which is respectively connected to an electrode column of the battery cell and a corresponding sampling element.

12. A battery system, characterized in that: The battery system comprises the battery management system according to any one of claims 1 to 11 and at least one battery cell.

13. The battery system according to claim 12, wherein: At least one of the battery cells is divided into at least one battery cell group, the battery cell group includes a plurality of the battery cells arranged in sequence along a first direction, the data transmission line includes at least one first transmission line segment, each of the first transmission line segments corresponds to one of the battery cell groups, the first transmission line segment is located on the same side of the plurality of battery cells of the corresponding battery cell group, and the first transmission line segment is extended along the first direction.

14. The battery system according to claim 13, characterized in that The number of the battery cell groups is at least two, and at least two of the battery cell groups are arranged along the second direction. The data transmission line includes at least one second transmission line segment, and each of the second transmission line segments is respectively connected to the ends of the first transmission line segments corresponding to two adjacent battery cell groups, wherein the first direction and the second direction are not parallel.

15. The battery system according to claim 14, characterized in that Each of the first transmission line segments has a first end and a second end in the first direction. In the second direction, a distance between the two first ends and a distance between the two second ends of two adjacent first transmission line segments are both greater than a distance between the first ends and the second ends of two first transmission line segments. Each of the second transmission line segments is respectively connected to the first ends corresponding to two adjacent first transmission line segments, or each of the second transmission line segments is respectively connected to the second ends corresponding to two adjacent first transmission line segments.

16. An electrical device, characterized in that: The power-consuming device includes the battery management system according to any one of claims 1 to 11, or the power-consuming device includes the battery system according to any one of claims 12 to 15.

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