Battery cell, battery, battery system, and electrical device

Abstract

The present application provides a battery cell, a battery, a battery system, and an electrical device. The battery cell comprises a casing, poles, and an information monitoring module. The poles are used for providing power supply current to an external load. The information monitoring module comprises an information acquisition assembly and a first carrier conversion assembly, the information acquisition assembly is electrically connected to the first carrier conversion assembly, and the first carrier conversion assembly is electrically connected to the poles. The first carrier conversion assembly is electrically connected to a power supply assembly, and the power supply assembly is used for supplying power to the information monitoring module. The information acquisition assembly acquires a battery parameter of the battery cell, and the first carrier conversion assembly converts the battery parameter into a first carrier signal, and loads same onto a power supply bus by means of the poles.

Description

Battery cells, batteries, battery systems and electrical equipment

Technical field

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

[0002] Battery-powered electric vehicles dominate the new energy vehicle market. Driven by OEMs and relevant policies, new energy battery systems are rapidly developing toward standardization and modularization. Meanwhile, limited by range and vehicle size, battery systems and modules are constantly being made smaller and more compact.

[0003] Therefore, a simpler and more efficient battery module is needed. Currently, mainstream new energy battery modules are mainly composed of the following modules: simple battery modules, in which parameters such as voltage and temperature are directly output to the battery system (BMS, BATTERY MANAGEMENT SYSTEM) slave in the form of analog signals using wires; wired battery monitoring unit (CSC, Cell Supervision Circuit) modules, in which voltage and temperature are calculated in the CSC inside the module and then output to the BMS host in the form of digital signals using communication lines. However, these battery modules all have multiple connection forms, including low-voltage power lines, low-voltage communication lines, and high-voltage power lines. When using wired transmission, the first thing to consider is drilling holes or setting corresponding structures on the top cover of the battery cell. This will cause the wiring harness to be more complicated, and will further cause problems such as assembly, sealing and processing difficulties, making the structure of the battery cell complex and unreliable.

[0004] [Summary of the invention]

[0005] The present application provides a battery cell, a battery, a battery system and an electrical device, aiming to solve the above-mentioned technical problems existing in the prior art.

[0006] In order to solve the above technical problems, a technical solution adopted by the present application is as follows: providing a battery cell, which includes a shell, a pole, a power supply component and an information monitoring module, wherein the pole is arranged on the shell and is used to provide a power supply current to an external load; the information monitoring module includes an information acquisition component and a first carrier conversion component, the information acquisition component is electrically connected to the first carrier conversion component, and the first carrier conversion component is electrically connected to the pole; the first carrier conversion component is electrically connected to the power supply component, and the power supply component is used to power the information monitoring module; the information acquisition component collects battery parameters of the battery cell, and the first carrier conversion component converts the battery parameters into a first carrier signal and loads it onto the power supply current through the pole. Thus, after the collected battery parameters are converted into the first carrier signal by the first carrier conversion component and loaded onto the power supply bus for transmission through the pole, the battery cell does not need to be equipped with an additional communication harness for communication, making the battery cell structure simpler, the operation more reliable, and the lossless transmission of battery parameters can be achieved. In addition, the present application provides a power supply component to power the information monitoring module, thereby improving the stability of the information monitoring module.

[0007] In some embodiments, the information acquisition component includes an information acquisition device and a processor, the information acquisition device being electrically connected to the processor, which in turn is electrically connected to a first carrier conversion component. The information acquisition device collects battery parameters and transmits them to the processor, which then pre-processes and calculates the battery parameters before transmitting them to the first carrier conversion component. Thus, by configuring the processor to pre-process and calculate the battery parameters collected by the information acquisition device before transmitting them to the power bus via the first carrier conversion component, the computational load of the battery management module can be reduced.

[0008] In some embodiments, the housing is provided with a housing cavity, and the information acquisition device is disposed within the housing cavity; the processor is disposed within or outside the housing cavity, and / or the first carrier conversion component is disposed within or outside the housing cavity. Therefore, if the processor and / or the first carrier conversion component and the information acquisition device are disposed within the battery cell housing cavity, this is beneficial to the miniaturization of the battery cell and can reduce the probability of the processor and / or the first carrier conversion component transmitting interference externally; if the processor and / or the first carrier conversion component and the information acquisition device are disposed outside the battery cell, no anti-corrosion treatment is required, thereby reducing the risk of the processor and / or the first carrier conversion component being corroded by the inside of the battery cell.

[0009] In some embodiments, the processor is configured to control the first carrier conversion component to adjust the amplitude of the first carrier signal according to the strength of the supply current. Thus, controlling the first carrier conversion component to adjust the amplitude of the first carrier signal according to the strength of the supply current can effectively reduce the power consumption of the battery cell.

[0010] In some embodiments, the processor is configured to control the first carrier conversion component to adjust the frequency of the first carrier signal according to the battery parameters. Thus, controlling the first carrier conversion component to adjust the frequency of the first carrier signal according to the battery parameters can also effectively reduce the power consumption of the battery cell.

[0011] In some embodiments, the first carrier conversion component is further configured to convert the second carrier signal input via the terminal into a control signal and transmit the signal to the processor. Thus, the first carrier conversion component can convert the second carrier signal input via the terminal into a control signal to control the processor, enabling accurate acquisition of battery parameters within the battery cell based on demand.

[0012] In some embodiments, the processor is configured to respond to the control signal and control the information acquisition device to acquire battery parameters, thereby improving the efficiency of the battery management module in acquiring battery parameters.

[0013] In some embodiments, the number of information acquisition devices is at least one, and each information acquisition device can be one of a temperature sensor, an air pressure sensor, a voltage sensor, a pressure sensor, and a gas sensor. Thus, the battery management module can obtain one or more parameters within the battery cell, thereby improving the battery management module's monitoring efficiency of the battery cell.

[0014] In some embodiments, the power supply assembly is electrically connected to the pole and the information monitoring module, and the power supply assembly uses the battery cell's own power to power the information monitoring module. This allows the information monitoring module to operate under different battery cell voltage states, thereby improving the stability of the information monitoring module.

[0015] In some embodiments, the power supply assembly includes an integrated buck-boost circuit, or the power supply assembly includes a separate boost branch and a buck branch. Thus, if the power supply assembly is an integrated buck-boost circuit, it can facilitate the miniaturization of the battery cell. If the power supply assembly includes separate boost and buck branches, it can reduce the complexity of the battery cell and thus reduce the power consumption of the battery cell.

[0016] To solve the above technical problems, the present application adopts a technical solution: providing a battery, the battery comprising any of the above-mentioned battery cells; wherein the multiple battery cells are electrically connected, and the multiple battery cells are electrically connected to the power supply bus, and the information acquisition component of each battery cell converts the collected battery parameters into a first carrier signal through a first carrier conversion component, and loads the first carrier signal onto the power supply bus through a pole, and transmits it outward through the power supply bus. Thus, by electrically connecting the multiple battery cells to the power supply bus, the information acquisition component of each battery cell can convert the collected battery parameters into a first carrier signal through the first carrier conversion component, and load the first carrier signal onto the power supply bus through a pole, that is, the battery parameters of multiple battery cells can be obtained through the power supply bus, realizing lossless transmission of the battery parameters of multiple battery cells.

[0017] To solve the above-mentioned technical problems, the present application adopts a technical solution: providing a battery system, which includes the battery and battery management module of the above-mentioned embodiment and a second carrier conversion component, wherein the second carrier conversion component is connected to the battery management module and the power supply bus, respectively, and the second carrier conversion component converts the first carrier signal to obtain battery parameters and sends the battery parameters to the battery management module. Thus, the second carrier conversion component is provided to extract and demodulate the first carrier signal loaded on the power supply bus to obtain battery parameters, and transmit the battery parameters to the battery management module, thereby improving the efficiency of the battery management module in obtaining battery parameters and sharing the computational load of the battery management module.

[0018] In some embodiments, the battery management module and the second carrier conversion component are integrated on the same circuit board, thereby improving the integration of the battery system and facilitating the miniaturization of the battery system.

[0019] In some embodiments, the second carrier conversion component includes a carrier extraction module and a demodulation processing module; the carrier extraction module is connected to the power bus and the demodulation processing module, respectively, and the demodulation processing module is connected to the battery management module; the carrier extraction module is used to extract the first carrier signal from the power bus, and the demodulation processing module is used to demodulate the first carrier signal into battery parameters. Thus, providing the carrier extraction module separately can improve the efficiency of obtaining the first carrier signal and the accuracy of the collected battery parameter data, and providing the demodulation processing module can share the computational load of the battery management module.

[0020] In some embodiments, the carrier extraction module includes an induction coil disposed around the power busbar and extracting the first carrier signal through electromagnetic induction. Thus, using the induction coil to extract the first carrier signal can make the extracted first carrier signal more accurate and complete, mitigate signal loss, and improve the accuracy of collected battery parameter data.

[0021] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide an electrical device, which includes the battery system of the above embodiment.

[0022] Different from the prior art, the battery cell of the present application includes a shell, a pole, a power supply component and an information monitoring module, wherein the pole is used to provide power supply current to the external load; the information monitoring module includes an information acquisition component and a first carrier conversion component, the information acquisition component is electrically connected to the first carrier conversion component, and the first carrier conversion component is electrically connected to the pole; the first carrier conversion component is electrically connected to the power supply component, and the power supply component is used to power the information monitoring module; the information acquisition component collects the battery parameters of the battery cell, and the first carrier conversion component converts the battery parameters into a first carrier signal, and loads it onto the power supply bus through the pole. In the above manner, the present application converts the collected battery parameters into a first carrier signal through the first carrier conversion component, and loads it onto the power supply bus through the pole for transmission, so that the battery cell does not need to set up an additional communication harness for communication, making the battery cell structure simpler, the operation more reliable, and the lossless transmission of battery parameters can be achieved, and the present application also sets a power supply component to power the information monitoring module, thereby improving the stability of the information monitoring module.

Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0024] FIG1 is a schematic structural diagram of a first embodiment of a battery cell of the present application;

[0025] FIG2 is a schematic structural diagram of a second embodiment of a battery cell of the present application;

[0026] FIG3 is a schematic structural diagram of a third embodiment of a battery cell of the present application;

[0027] FIG4 is a schematic structural diagram of a fourth embodiment of a battery cell of the present application;

[0028] FIG5 is a schematic structural diagram of a fifth embodiment of a battery cell of the present application;

[0029] FIG6 is a schematic diagram of the circuit structure of the first embodiment of the power supply assembly of the present application;

[0030] FIG7 is a schematic diagram of the circuit structure of the second embodiment of the power supply assembly of the present application;

[0031] FIG8 is a schematic diagram of the circuit structure of the third embodiment of the power supply assembly of the present application;

[0032] FIG9 is a schematic diagram of the circuit structure of an embodiment of the boost branch of the present application;

[0033] FIG10 is a schematic diagram of the circuit structure of an embodiment of a step-down branch of the present application;

[0034] FIG11 is a schematic structural diagram of a first embodiment of a battery of the present application;

[0035] FIG12 is a schematic structural diagram of a second embodiment of a battery of the present application;

[0036] FIG13 is a schematic structural diagram of a first embodiment of a battery system of the present application;

[0037] FIG14 is a schematic structural diagram of a second embodiment of the battery system of the present application;

[0038] FIG15 is a schematic structural diagram of an embodiment of an electrical device of the present application.

[0039] Explanation of reference numerals: battery cell 100, housing 10, end cap 11, housing 12, pole 20, electrode assembly 40, pole ear 40a, information monitoring module 30, information acquisition assembly 31, information acquisition device 311, processor 312, first carrier conversion assembly 32, power supply assembly 50, first inductor L1, switch tube G1, first capacitor C1, second inductor L2, diode D1, second capacitor C2, first common terminal M1, second common terminal M2, switch tube G2, inductor L3, diode D2, capacitor C3, common terminal M3 , boost branch 51, inductor L4, diode D3, switch tube G3, capacitor C4, step-down branch 52, switch tube G4, inductor L5, diode D4, capacitor C5, selection switch unit 53, battery 200, box 101, first part 1011, second part 1012, power supply bus 110, battery system 300, second carrier conversion component 210, carrier extraction module 211, induction coil 2111, demodulation processing module 212, battery management module 220, power-consuming equipment 400, controller 401, motor 402. [Specific implementation method]

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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).

[0046] 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.

[0047] Battery-powered electric vehicles dominate the new energy vehicle market. Driven by OEMs and relevant policies, new energy battery systems are rapidly developing toward standardization and modularization. Meanwhile, limited by range and vehicle size, battery systems and modules are constantly being made smaller and more compact.

[0048] Therefore, a simpler and more efficient battery module is needed. Currently, mainstream new energy battery modules are mainly composed of the following modules: simple battery modules, in which parameters such as voltage and temperature are directly output to the battery system (BMS, BATTERY MANAGEMENT SYSTEM) slave in the form of analog signals using wires; wired battery monitoring unit (CSC, Cell Supervision Circuit) modules, in which voltage and temperature are calculated in the CSC inside the module and then output to the BMS host in the form of digital signals using communication lines. However, these battery modules all have multiple connection forms, including low-voltage power lines, low-voltage communication lines, and high-voltage power lines. When using wired transmission, the first thing to consider is drilling holes or setting corresponding structures on the top cover of the battery cell. This will cause the wiring harness to be more complicated, and will further cause problems such as assembly, sealing and processing difficulties, making the structure of the battery cell complex and unreliable.

[0049] In order to solve the above problems, the present application proposes a battery cell, which can convert the collected battery parameters into a first carrier signal and load it onto the power supply bus through the pole for transmission. This can eliminate the need for the battery cell to set up an additional communication harness for communication, making the battery cell structure simpler, the operation more reliable, and the lossless transmission of battery parameters possible.

[0050] Please refer to Figure 1, which is a schematic structural diagram of a first embodiment of a battery cell of the present application. Each battery cell 100 can be a secondary battery or a primary battery. Battery cells 100 can also be, but are not limited to, lithium-ion batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries. Battery cells 100 can be cylindrical, flat, rectangular, or other shapes.

[0051] Specifically, a battery cell 100 is the smallest unit of a battery. It includes an outer casing 10, an electrode assembly 40, and other functional components. The outer casing 10 includes an end cap 11 and a housing 12. The end cap 11 is a component that covers the opening of the housing 12 to isolate the internal environment of the battery cell 100 from the external environment. The shape of the end cap 11 can be adapted to match the shape of the housing 12.

[0052] In some embodiments, functional components such as a terminal post 20 may be provided on the end cap 11. The terminal post 20 may be used to electrically connect to the electrode assembly 40 for outputting or inputting electrical energy of the battery cell 100.

[0053] In some embodiments, the end cap 11 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 100 reaches a threshold value.

[0054] In some embodiments, an insulating member may be further provided on the inner side of the end cover 11 , and the insulating member may be used to isolate the electrical connection components in the housing 12 from the end cover 11 to reduce the risk of short circuit.

[0055] The shell 12 is a component used to cooperate with the end cap 11 to form the internal environment of the battery cell 100, wherein the formed internal environment can be used to accommodate the electrode assembly 40, electrolyte and other components. The shell 12 and the end cap 11 can be independent components, and an opening can be set on the shell 12, and the internal environment of the battery cell 100 is formed by covering the opening with the end cap 11. Without limitation, the end cap 11 and the shell 12 can also be integrated. Specifically, the end cap 11 and the shell 12 can form a common connection surface before other components are put into the shell. When the interior of the shell 12 needs to be encapsulated, the end cap 11 is covered with the shell 12. The shell 12 can be of various shapes and sizes, such as rectangular, cylindrical, hexagonal, etc. Specifically, the shape of the shell 12 can be determined according to the specific shape and size of the electrode assembly 40.

[0056] The electrode assembly 40 is the component in the battery cell 100 where the electrochemical reaction occurs. One or more electrode assemblies may be contained within the housing 12. The electrode assembly 40 is primarily formed by winding a positive electrode sheet and a negative electrode sheet, and a separator is typically provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive electrode sheet and the negative electrode sheet containing active material constitute the main body of the electrode assembly 40, while the portions of the positive electrode sheet and the negative electrode sheet without active material each constitute a tab 40a. During the charge and discharge process of the battery 200, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 40a connects to the pole 20 to form a current loop.

[0057] The present application further proposes a battery cell, as shown in FIG2 , which is a schematic structural diagram of a second embodiment of the battery cell of the present application. As shown in FIG2 , the battery cell 100 of this embodiment includes a housing 10, a pole 20, and an information monitoring module 30, wherein the pole 20 is provided on the housing 10 and is used to provide a power supply current to an external load; the information monitoring module 30 includes an information acquisition component 31 and a first carrier conversion component 32, the information acquisition component 31 is electrically connected to the first carrier conversion component 32, and the first carrier conversion component 32 is electrically connected to the pole 20; the first carrier conversion component 32 is electrically connected to the power supply component (not shown), and the power supply component is used to power the information monitoring module 30, the information acquisition component 31 collects battery parameters of the battery cell 100, and the first carrier conversion component 32 converts the battery parameters into a first carrier signal and loads it onto the power supply bus through the pole 20.

[0058] Among them, the housing 10 and the pole 20 are consistent with the above-mentioned embodiment and will not be repeated here. The information monitoring module 30 can be considered as a slave corresponding to the battery management module; in the prior art, the information monitoring module 30 needs to collect the battery parameters of the battery cell 100 from the battery cell 100 through the communication line and send the battery parameters to the battery management module through the communication line. It is a slave module of the battery management module, but in this embodiment, the information monitoring module 30 includes an information collection component 31 and a first carrier conversion component 32. The information collection component 31 is electrically connected to the first carrier conversion component 32, and the first carrier conversion component 32 is electrically connected to the pole 20; the information collection component 31 collects the battery parameters of the battery cell 100, and the first carrier conversion component 32 converts the battery parameters into a first carrier signal and loads it onto the power supply bus through the pole 20.

[0059] In this embodiment, a power supply component (not shown) connected to the first carrier conversion component 32 and supplying power to the information monitoring module 30 is disposed outside the battery cell 100 .

[0060] In some embodiments, as shown in Figure 3, Figure 3 is a structural diagram of the third embodiment of the battery cell of the present application. As shown in Figure 3, the power supply component 50 can be arranged inside the battery cell 100, and the first carrier conversion component 32 is electrically connected to the power supply component 50, and the power supply component 50 is used to supply power to the information monitoring module 30. In this embodiment, the power supply component 50 can be provided with an independent power supply or connected to an external power supply to supply power to the information monitoring module 30, so that the information monitoring module 30 can work in a normal state. In other embodiments, the power supply component 50 can also be connected to the pole of the battery cell 100, and the battery cell 100's own power is used to power the information monitoring module 30. This has been described in detail below and will not be repeated here.

[0061] Therefore, after the collected battery parameters are converted into a first carrier signal through the first carrier conversion component 32 and loaded onto the power supply bus for transmission through the pole 20, the battery cell 100 does not need to be equipped with an additional communication harness for communication, making the battery cell 100 structure simpler, the operation more reliable, and the lossless transmission of battery parameters can be achieved; and the present application sets a power supply component 50 to power the information monitoring module 30, thereby improving the stability of the information monitoring module 30.

[0062] In addition, in this embodiment, battery parameters include temperature, air pressure, voltage, pressure, and gas parameters, which are used to reflect the state of charge (SOC) and heat dissipation of the battery cell 100, so that the battery management module can take corresponding measures for the corresponding battery cell 100. Because the above-mentioned battery parameters are weak voltage signals, and the pole 20 transmits battery power, which is a strong voltage signal, in order to successfully convert the battery parameters into a first carrier signal and load it to the power bus through the pole 20, it is necessary to modulate the first carrier signal into a carrier signal with a preset waveform. The battery management module, upon receiving the first carrier signal, obtains the battery parameters through demodulation.

[0063] Among them, in this embodiment, the first carrier signal can be a square wave pulse signal. In order to avoid the interference of electric energy on the square wave pulse, the frequency of the square wave pulse signal can be set to be significantly higher than the frequency of electric energy transmission. For details, please refer to the relevant technology of power carrier, which will not be described in detail here.

[0064] In some embodiments, as shown in Figure 4, which is a schematic diagram of the structure of a fourth embodiment of a battery cell of the present application, the information acquisition component 31 of this embodiment includes an information acquisition device 311 and a processor 312. The information acquisition device 311 is electrically connected to the processor 312, which is electrically connected to the first carrier conversion component 32. The information acquisition device 311 collects battery parameters and sends them to the processor 312. The processor 312 pre-processes and calculates the battery parameters and then sends them to the first carrier conversion component 32.

[0065] In this embodiment, the processor 312 can be configured as a microcontroller unit (MCU), and the MCU can also be configured to adopt the RISC-V instruction set open source architecture, with a built-in storage unit and an oscillator.

[0066] Therefore, the processor 312 is configured to pre-process and calculate the battery parameters collected by the information collection device 311 and then load them to the power supply bus through the first carrier conversion component 32, which can share the computing load of the battery management module.

[0067] In some embodiments, as shown in FIG4 , the housing 10 is provided with a receiving cavity. In the embodiment of FIG4 , the information acquisition device 311 is disposed in the receiving cavity; the processor 312 and the first carrier conversion component 32 can both be disposed in the receiving cavity.

[0068] In some embodiments, one of the processor 312 and the first carrier conversion component 32 may be disposed within the housing cavity. Placing the processor 312 and / or the first carrier conversion component 32 and the information acquisition device 311 within the housing cavity of the battery cell 100 facilitates miniaturization of the battery cell 100 and reduces the probability of external interference from the processor 312 and / or the first carrier conversion component 32.

[0069] In some embodiments, the processor 312 and the first carrier conversion component 32 may be disposed outside the housing cavity. If the processor 312 and / or the first carrier conversion component 32 and the information acquisition device 311 are disposed outside the battery cell 100, no anti-corrosion treatment is required, thereby reducing the risk of the processor 312 and / or the first carrier conversion component 32 being corroded by the battery cell 100.

[0070] In some embodiments, based on the embodiment of FIG. 4 , in this embodiment, the processor 312 may be configured to control the first carrier conversion component 32 to adjust the amplitude of the first carrier signal according to the strength of the power supply current.

[0071] For example, when the battery cell 100 is electrically connected to the information acquisition component 31 and the first carrier conversion component 32 to power both of them, the processor 312 in the information acquisition component 31 can obtain the power supply circuit of the battery cell 100 through the pole 20. If the intensity of the power supply current is less than the preset threshold, the first carrier conversion component 32 is controlled to adjust the amplitude of the first carrier signal to decrease. If the intensity of the power supply current is greater than the preset threshold, the first carrier conversion component 32 is controlled to adjust the amplitude of the first carrier signal to maintain a normal standard.

[0072] Therefore, controlling the first carrier conversion component 32 to adjust the amplitude of the first carrier signal according to the strength of the power supply current can effectively reduce the power consumption of the battery cell 100.

[0073] In some embodiments, the processor 312 may be configured to control the first carrier conversion component 32 to adjust the frequency of the first carrier signal according to the battery parameter.

[0074] For example, when the processor 312 sends the battery parameters to the first carrier conversion component 32 for conversion into the first carrier signal, it can adjust the frequency of the first carrier signal according to the type of battery parameters. For example, if the battery parameters are voltage parameters, the voltage parameters are more important to the battery management module. When the transmitted battery parameters are voltage parameters, the frequency of the first carrier signal is increased. If the battery parameters are other parameters such as temperature or air pressure, the frequency of the first carrier signal can be appropriately reduced.

[0075] Therefore, controlling the first carrier conversion component 32 to adjust the frequency of the first carrier signal according to the battery parameters can also effectively reduce the power consumption of the battery cell 100 .

[0076] In some embodiments, the first carrier conversion component 32 may be configured to convert the second carrier signal input via the pole 20 into a control signal and send the control signal to the processor 312 .

[0077] In this embodiment, the first carrier conversion component 32 can not only convert the battery parameters sent by the processor 312 into a first carrier signal, but also convert the second carrier signal input through the pole 20 into a control signal and send it to the processor 312, and the processor 312 controls the information acquisition device 311 based on the control signal.

[0078] Thus, the first carrier conversion component 32 can convert the second carrier signal input through the pole 20 into a control signal to control the processor 312, and can accurately obtain the battery parameters inside the battery cell 100 based on demand.

[0079] In some embodiments, the processor 312 may be configured to respond to a control signal and control the information acquisition device 311 to acquire battery parameters.

[0080] For example, the first carrier conversion component 32 converts the second carrier signal of the control battery parameter collection type input through the pole 20 into a control signal and sends it to the processor 312. The processor 312 can parse the signal. If the control signal is to collect voltage parameters, the control information collection device 311 is used to collect the voltage parameters of the battery cell 100. If the control signal is to collect temperature parameters, the control information collection device 311 is used to collect the temperature parameters of the battery cell 100.

[0081] Therefore, setting the processor 312 to respond to the control signal and control the information acquisition device 311 to collect battery parameters can improve the efficiency of the battery management module in obtaining battery parameters.

[0082] In some embodiments, based on the above embodiments, in this embodiment, the number of information acquisition devices 311 is at least one, and each information acquisition device 311 can be one of a temperature sensor, an air pressure sensor, a voltage sensor, a pressure sensor, and a gas sensor.

[0083] That is, the information acquisition component 31 includes any combination of a temperature sensor, an air pressure sensor, a voltage sensor, a pressure sensor, and a gas sensor, and a processor 312. In other embodiments, the information acquisition component 311 may also be equipped with corresponding sensors based on other parameter requirements, which is not limited here.

[0084] Therefore, providing multiple information acquisition devices 311 can enable the battery management module to obtain one or more parameters inside the battery cell 100, thereby improving the monitoring efficiency of the battery management module on the battery cell 100.

[0085] In some embodiments, as shown in FIG5 , which is a schematic structural diagram of a fifth embodiment of a battery cell of the present application, the power supply assembly 50 of the battery cell 100 of this embodiment is disposed within the battery cell 100 and is electrically connected to the terminal 20 and the information monitoring module 30 , respectively. The power supply assembly 50 utilizes the power of the battery cell 100 to power the information monitoring module 30 .

[0086] Therefore, in this embodiment, the battery cell 100 converts the collected battery parameters into a first carrier signal through the first carrier conversion component 32, and loads it onto the power supply bus through the pole 20 for transmission. This allows the battery cell 100 to communicate without setting up an additional communication harness, making the battery cell 100 structure simpler, the operation more reliable, and the lossless transmission of battery parameters possible. In addition, the power supply component 50 of the battery cell 100 of this embodiment not only uses the battery cell 100's own power to power the information monitoring module 30, but also enables the information monitoring module 30 to operate under different voltage states of the battery cell 100, thereby improving the stability of the information monitoring module 30.

[0087] In some embodiments, based on the embodiment of FIG5 , in this embodiment, the power supply assembly 50 includes an integrated buck-boost circuit, or the power supply assembly 50 includes a separately provided boost branch 51 and buck branch 52. Therefore, if the power supply assembly 50 is an integrated buck-boost circuit, it is beneficial to miniaturize the battery cell 100.

[0088] Optionally, the power supply component 50 can be configured as a buck-boost integrated circuit. As shown in FIG6 , FIG6 is a schematic diagram of the circuit structure of the first embodiment of the power supply component of the present application. As shown in FIG5 and FIG6 , in this embodiment, the buck-boost integrated circuit includes a first inductor L1, a switch tube G1, a first capacitor C1, a second inductor L2, a diode D1 and a second capacitor C2. The first end of the first inductor L1 is connected to the positive electrode 20 of the battery cell 100, the second end of the first inductor L1 is connected to the first end of the first capacitor C1, the positive terminal of the diode D1 is connected to the second end of the first capacitor C1, and the negative terminal of the diode D1 is connected to the second terminal of the second capacitor C1. The first end of capacitor C2 is connected to the positive output terminal of the buck-boost integrated circuit. The first connection end of the switch G1 is connected to the first common terminal M1 between the first inductor L1 and the first capacitor C1. The control end of the switch G1 receives a control signal. The first end of the second inductor L2 is connected to the second common terminal M2 between the first capacitor C1 and the diode D1. The second connection end of the switch G1, the second end of the second inductor L2, and the second end of the second capacitor C2 are connected to the negative electrode 20 of the battery cell 100 and the negative output terminal of the buck-boost integrated circuit. If the buck-boost integrated circuit adopts the single-ended primary inductor converter of this embodiment, the current fluctuation at the output terminal of the battery cell 100 can be reduced.

[0089] The working principle of the buck-boost integrated circuit in FIG6 is as follows:

[0090] When the switch tube G1 is in the on state, the loop from the battery cell 100 to the first inductor L1 and then to the switch tube G1 and the loop from the first capacitor C1 to the switch tube G1 and then to the second inductor L2 are conductive at the same time, and the first inductor L1 and the second inductor L2 store energy.

[0091] When the switch G1 is in the off state, the loop from the battery cell 100 to the first inductor L1 to the first capacitor C1 to the diode D1 to the second capacitor C2, and the loop from the second inductor L2 to the diode D1 to the second capacitor C2 are both conductive. During this stage, the battery cell 100 and the first inductor L1 both supply power to the second capacitor C2 and charge the first capacitor C1. The energy stored in the first capacitor C1 is transferred to the second inductor L2 when the switch G1 is in the on state.

[0092] The input voltage of the battery cell 100 from the pole 20 to the buck-boost integrated circuit is E, and the power supply voltage input to the information monitoring module 30 after adjustment by the buck-boost integrated circuit is U. o , assuming that the duty cycle of the control signal received by the control terminal of the switch tube G1 is α (0<α≤1), the input-output relationship of the buck-boost integrated circuit is given by formula (1):

[0093] As can be seen from the above, if the duty cycle α is greater than 0 and less than or equal to 1, the power supply voltage input to the information monitoring module 30 is U o As the duty cycle α changes, it can be greater than the input voltage E or less than the input voltage E. Therefore, the buck-boost integrated circuit in this embodiment can achieve the function of boosting or bucking by adjusting the duty cycle α of the control signal received by the control end of the switch tube G1.

[0094] Optionally, in other embodiments, the power supply component 50 can be configured as a buck-boost integrated circuit in other forms. As shown in Figure 7, Figure 7 is a schematic diagram of the circuit structure of the second embodiment of the power supply component of the present application. As shown in Figures 5 and 7, in this embodiment, the buck-boost integrated circuit includes: a switch tube G2, an inductor L3, a diode D2 and a capacitor C3. The first connection end of the switch tube G2 is connected to the positive pole 20 of the battery cell 100, the second connection end of the switch tube G2 is connected to the negative end of the diode D2, the control end of the switch tube G2 receives a control signal, the positive end of the diode D2 is connected to the first end of the capacitor C3, and is connected to the positive output end of the buck-boost integrated circuit. The first end of the inductor L3 is connected to the common terminal M3 between the switch tube G2 and the diode D2, and the second end of the inductor L3 and the second end of the capacitor C3 are connected to the negative pole 20 of the battery cell 100 and the negative output end of the buck-boost integrated circuit. If the buck-boost integrated circuit is implemented using the above-mentioned buck-boost converter, the complexity of the power supply component 50 can be reduced, making the circuit structure simpler.

[0095] The working principle of the buck-boost integrated circuit in FIG7 is as follows:

[0096] When switch G2 is on, the loop from battery cell 100 to switch G2 and then to inductor L3 is conductive. At this point, capacitor C3 maintains the supply voltage for information monitoring module 30. When switch G2 is off, the loop from diode D2 to inductor L3 and then to capacitor C3 is conductive. Current in inductor L3 flows from ground to capacitor C3, then through diode D2 and back to inductor L3. This process involves inductor L3 releasing energy and capacitor C3 charging.

[0097] The input voltage of the battery cell 100 from the pole 20 to the buck-boost integrated circuit is E, and the power supply voltage input to the information monitoring module 30 after adjustment by the buck-boost integrated circuit is U. o Assuming that the duty cycle of the control signal received by the control terminal of the switch tube G2 is α (0<α≤1), the input-output relationship of the buck-boost integrated circuit is still the same as the above formula (1). That is, the buck-boost integrated circuit in this embodiment can also achieve the function of boosting or bucking by adjusting the duty cycle α of the control signal received by the control terminal of the switch tube G2.

[0098] Optionally, in other embodiments, the power supply component 50 can be configured as a separately configured boost branch 51 and a separately configured buck branch 52. If the power supply component 50 is configured as a separately configured boost branch 51 and a buck branch 52, the complexity of the battery cell 100 can be reduced, thereby reducing the power consumption of the battery cell 100.

[0099] As shown in Figures 5 and 8, Figure 8 is a schematic diagram of the circuit structure of the third embodiment of the power supply component 50 of the present application. As shown in Figure 8, the power supply component 50 can also be provided with a selection switch unit 53. The selection switch unit 53 can select the corresponding boost branch 51 or buck branch 52 based on the voltage strength of the battery cell 100. If the voltage strength of the battery cell 100 is greater than or equal to the preset threshold, the buck branch 52 is selected; if the voltage strength of the battery cell 100 is less than the preset threshold, the boost branch 51 is selected.

[0100] In some embodiments, as shown in FIG9 , FIG9 is a schematic diagram of the circuit structure of an embodiment of the boost branch 51 of the present application. The boost branch 51 of this embodiment includes an inductor L4, a diode D3, a switch G3, and a capacitor C4. One end of the inductor L4 is connected to the positive electrode 20 of the battery cell 100, the other end of the inductor L4 is connected to the anode of the diode D3, and the cathode of the diode D3 is connected to the positive output terminal of the boost branch 51. One connection end of the switch G3 is connected to the common terminal between the inductor L4 and the diode D3, and the other connection end of the switch G3 is connected to the negative electrode 20 of the battery cell 100 and the negative output terminal of the boost branch 51. The control end of the switch G3 receives a control signal, and the control signal controls whether the switch G3 is turned on or off.

[0101] As shown in Figure 10, Figure 10 is a schematic diagram of the circuit structure of an embodiment of the step-down branch 52 of the present application. The step-down branch 52 of this embodiment includes a switch tube G4, an inductor L5, a diode D4, and a capacitor C5. The control terminal of the switch tube G4 receives a control signal. One connection terminal of the switch tube G4 is connected to the positive electrode terminal 20 of the battery cell 100. The other connection terminal of the switch tube G4 is connected in series with the inductor L5 and then connected to the positive output terminal of the step-down branch 52. The anode of the diode D4 is connected to the negative electrode terminal 20 of the battery cell 100 and the negative output terminal of the step-down branch 52. The cathode of the diode D4 is connected to the common terminal between the switch tube G4 and the inductor L5. The two ends of the capacitor C5 are respectively connected to the positive output terminal and the negative output terminal of the step-down branch 52.

[0102] Here, let the input voltage of the battery cell 100 from the pole 20 to the boost branch 51 be E, the supply voltage adjusted by the boost branch 51 and input to the information monitoring module 30 be Uo, and let the duty cycle of the control signal received by the control end of the switch tube G3 be α (0<α≤1), then the input-output relationship of the boost branch 51 is given by formula (2):

[0103] As can be seen from the above, if the duty cycle α is greater than 0 and less than or equal to 1, the power supply voltage input to the information monitoring module 30 is Uo. Regardless of how the duty cycle α changes, the power supply voltage Uo input to the information monitoring module 30 is greater than the input voltage E. Therefore, the boost branch 51 in this embodiment can achieve the boost function by adjusting the duty cycle α of the control signal received by the control end of the switch tube G3.

[0104] Assume that the input voltage of the battery cell 100 from the pole 20 to the step-down branch 52 is E, the power supply voltage adjusted by the step-down branch 52 and input to the information monitoring module 30 is Uo, and the duty cycle of the control signal received by the control end of the switch tube G4 is α (0<α≤1), then the input-output relationship of the step-down branch 52 is given by formula (3): Uo=(1-α)*E (3)

[0105] As can be seen from the above, because 0<α≤1, the power supply voltage input to the information monitoring module 30 is Uo. No matter how the duty cycle α changes, the power supply voltage Uo input to the information monitoring module 30 is less than the input voltage E. Therefore, the step-down branch 52 in this embodiment can achieve the step-down function by adjusting the duty cycle α of the control signal received by the control end of the switch tube G4.

[0106] The switches G1, G2, G3, and G4 in the above embodiment may be IGBTs (Insulated Gate Bipolar Transistors), MOSs (Metal-Oxide Semiconductor Field Effect Transistors), or BJTs (Bipolar Junction Transistors), etc. Furthermore, the control terminals of the switches G1, G2, G3, and G4 may be connected to the processor 312, and the processor 312 may adjust the duty cycle of the control signal to achieve a voltage step-up or step-down function, so that the information monitoring module 30 can function normally under any voltage state of the battery cell 100.

[0107] The present application proposes a battery, as shown in FIG11 , which is a schematic structural diagram of the first embodiment of the battery of the present application. The battery 200 includes a housing 101 and a battery cell 100, and the battery cell 100 is accommodated in the housing 101. The housing 101 is used to provide a storage space for the battery cell 100, and the housing 101 can adopt a variety of structures. In some embodiments, the housing 101 may include a first portion 1011 and a second portion 1012, and the first portion 1011 and the second portion 1012 cover each other, and the first portion 1011 and the second portion 1012 jointly define a storage space for accommodating the battery cell 100. The second portion 1012 may be a hollow structure with one end open, and the first portion 1011 may be a plate-like structure, with the first portion 1011 covering the open side of the second portion 1012, so that the first portion 1011 and the second portion 1012 jointly define a storage space. The first portion 1011 and the second portion 1012 may also be hollow structures with one end open, with the open side of the first portion 1011 covering the open side of the second portion 1012. Of course, the box body 101 formed by the first portion 1011 and the second portion 1012 may have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0108] In the battery 200, there may be multiple battery cells 100, and the multiple battery cells 100 may be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple battery cells 100 are connected both in series and in parallel. The multiple battery cells 100 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 100 is accommodated in the case 101. Of course, the battery 200 may also be in the form of a battery 200 module in which multiple battery cells 100 are first connected in series, in parallel, or in a mixed connection, and the multiple battery 200 modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the case 101. The battery 200 may also include other structures. For example, the battery 200 may also include a busbar component for achieving electrical connection between the multiple battery cells 100.

[0109] Based on the above embodiments, the present application further proposes a battery, as shown in FIG12 , which is a schematic structural diagram of the second embodiment of the battery of the present application. As shown in FIG12 , the battery 200 of this embodiment includes multiple battery cells 100 of the above embodiments, wherein the multiple battery cells 100 are electrically connected, and the multiple battery cells 100 are electrically connected to the power supply bus 110. The information acquisition component 31 of each battery cell 100 converts the collected battery parameters into a first carrier signal through the first carrier conversion component 32, and loads the first carrier signal onto the power supply bus 110 through the pole 20, and transmits it outward through the power supply bus 110.

[0110] The plurality of battery cells 100 may also be connected in series, in parallel, or in mixed series to form a battery module as described in the above embodiments.

[0111] Thus, multiple battery cells 100 are electrically connected to the power supply bus 110, and the information acquisition component 31 of each battery cell 100 can convert the collected battery parameters into a first carrier signal through the first carrier conversion component 32, and load the first carrier signal to the power supply bus 110 through the pole 20, that is, the battery parameters of multiple battery cells 100 can be obtained through the power supply bus 110, thereby realizing lossless transmission of the battery parameters of multiple battery cells 100.

[0112] The present application proposes a battery system, as shown in Figure 13, which is a structural diagram of the first embodiment of the battery system of the present application. The battery system 300 includes a battery 200, a battery management module 220 and a second carrier conversion component 210. The second carrier conversion component 210 is connected to the battery management module 220 and the power supply bus 110 respectively. The second carrier conversion component 210 converts the first carrier signal to obtain battery parameters and sends the battery parameters to the battery management module 220.

[0113] The battery management module 220 includes either a BMS or a VCU. The BMS (Battery Management System), commonly known as a battery nanny or battery steward, is primarily responsible for intelligently managing and maintaining each battery cell 100, such as preventing overcharging and over-discharging of the battery 200, extending its service life, and monitoring its status. The VCU can be considered a vehicle controller. The VCU is a key component of the electronic control system for pure electric vehicles. Similar to the engine management system (EMS) in traditional internal combustion engine vehicles, the VCU of a pure electric vehicle effectively allocates energy and maximizes the energy utilization efficiency of the onboard battery 200. The VCU's electronic control unit (VCU) is the core of the VCU system. With the increasing number of electronic devices in electric vehicles and the increasing complexity of control systems, advanced vehicle control architectures are crucial for ensuring safe and reliable driving and improving the efficiency of data transmission between various control systems. This system implements functions such as motor drive control, temperature control, and energy management control, and is primarily composed of subsystems such as the sensor input and switch system, the system drive output, and the control unit output system.

[0114] In some embodiments, the battery management module 220 and the second carrier conversion component 210 are integrated on the same circuit board. Therefore, integrating the battery management module 220 and the second carrier conversion component 210 on the same circuit board can improve the integration of the battery system 300 and facilitate the miniaturization of the battery system 300.

[0115] In some embodiments, as shown in FIG13 , the second carrier conversion component 210 includes a carrier extraction module 211 and a demodulation processing module 212 ; the carrier extraction module 211 is connected to the power bus 110 and the demodulation processing module 212 respectively, and the demodulation processing module 212 is connected to the battery management module 220 ; the carrier extraction module 211 is used to extract the first carrier signal from the power bus 110 , and the demodulation processing module 212 is used to demodulate the first carrier signal into battery parameters. Thus, separately providing the carrier extraction module 211 can improve the efficiency of obtaining the first carrier signal and can improve the accuracy of the collected battery parameter data, and providing the demodulation processing module 212 can share the computational load of the battery management module 220 .

[0116] In some embodiments, please refer to Figure 14, which is a schematic diagram of the structure of the second embodiment of the battery system of the present application. As shown in Figure 14, the carrier extraction module 211 includes an induction coil 2111, which is arranged on the periphery of the power supply bus 110 and extracts the first carrier signal through electromagnetic induction.

[0117] The size of the induction coil 2111 can be set based on actual extraction needs. In other embodiments, other devices can also be used to extract the first carrier signal.

[0118] Therefore, setting the induction coil 2111 to extract the first carrier signal can make the extracted first carrier signal more accurate and complete, solve the signal loss, and help improve the accuracy of the collected battery parameter data.

[0119] The present application further proposes an electrical device, which includes a battery system 300 of the above embodiment. The battery 200 in the battery system 300 disclosed in the above embodiment can be used in, but is not limited to, electrical devices 400 such as vehicles, ships, or aircraft, and a power supply system of the electrical device 400 can be composed of the battery cells 100, batteries 200, etc. disclosed in this application.

[0120] The present embodiment provides an electric device 400 that uses a battery 200 as a power source. The electric device 400 may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, and the like. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft.

[0121] Taking a vehicle as an example, as shown in FIG15 , FIG15 is a schematic structural diagram of an embodiment of an electric device of the present application. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery system 300 is provided inside the vehicle, wherein the battery 200 of the battery system 300 can be provided at the bottom, head or tail of the vehicle. The battery 200 can be used to power the vehicle, for example, the battery 200 can be used as an operating power source for the vehicle. The vehicle may also include a controller 401 and a motor 402, and the controller 401 is used to control the battery 200 to power the motor 402, for example, for starting, navigating and operating power requirements of the vehicle during driving.

[0122] In some embodiments, the battery 200 can serve not only as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0123] 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.

[0124] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A battery cell, characterized in that: The battery cell comprises: shell; A pole, arranged on the housing and used to provide a power supply current to an external load; An information monitoring module, comprising an information acquisition component and a first carrier conversion component, wherein the information acquisition component is electrically connected to the first carrier conversion component, and the first carrier conversion component is electrically connected to the pole; The first carrier conversion component is electrically connected to a power supply component, and the power supply component is used to supply power to the information monitoring module; The information collection component collects battery parameters of the battery cells, and the first carrier conversion component converts the battery parameters into a first carrier signal, and loads the first carrier signal onto the power supply bus through the pole.

2. The battery cell according to claim 1, characterized in that: The information acquisition component includes an information acquisition device and a processor, the information acquisition device is electrically connected to the processor, and the processor is electrically connected to the first carrier conversion component; The information acquisition device acquires the battery parameters and sends them to the processor, and the processor performs pre-processing calculations on the battery parameters and sends them to the first carrier conversion component.

3. The battery cell according to claim 2, characterized in that: The housing is provided with a housing cavity, and the information acquisition device is arranged in the housing cavity; the processor is arranged in the housing cavity or outside the housing cavity, and / or the first carrier conversion component is arranged in the housing cavity or outside the housing cavity.

4. The battery cell according to claim 2, characterized in that: The processor is configured to control the first carrier conversion component to adjust the amplitude of the first carrier signal according to the strength of the supply current.

5. The battery cell according to claim 2, characterized in that: The processor is configured to control the first carrier conversion component to adjust the frequency of the first carrier signal according to the battery parameter.

6. The battery cell according to claim 2, characterized in that: The first carrier conversion component is also used to convert the second carrier signal input through the pole into a control signal and send it to the processor.

7. The battery cell according to claim 6, characterized in that: The processor is configured to respond to the control signal and control the information acquisition device to acquire the battery parameters.

8. The battery cell according to claim 2, characterized in that: The number of the information acquisition device is at least one, and each of the information acquisition devices may be one of a temperature sensor, an air pressure sensor, a voltage sensor, a pressure sensor, and a gas sensor.

9. The battery cell according to claim 1, characterized in that: The power supply component is electrically connected to the pole and the information monitoring module respectively, and the power supply component uses the power of the battery cell itself to supply power to the information monitoring module.

10. The battery cell according to claim 9, characterized in that: The power supply component includes an integrated buck-boost circuit, or the power supply component includes a boost branch and a buck branch that are separately arranged.

11. A battery, characterized in that: A battery cell comprising a plurality of battery cells according to any one of claims 1 to 10; Wherein, the plurality of battery cells are electrically connected, and the plurality of battery cells are electrically connected to the power supply bus, and the information collection component of each battery cell converts the collected battery parameters into the first carrier wave. The switching component converts the signal into a first carrier signal, and loads the first carrier signal onto the power supply bus through the pole, and transmits the first carrier signal outward through the power supply bus.

12. A battery system, characterized in that: It includes the battery, battery management module and second carrier conversion component as described in claim 11, the second carrier conversion component is respectively connected to the battery management module and the power supply bus, the second carrier conversion component converts the first carrier signal to obtain the battery parameters, and sends the battery parameters to the battery management module.

13. The battery system according to claim 12, characterized in that: The battery management module and the second carrier conversion component are integrated on the same circuit board.

14. The battery system according to claim 12, characterized in that: The second carrier conversion component includes a carrier extraction module and a demodulation processing module; the carrier extraction module is connected to the power supply bus and the demodulation processing module respectively, and the demodulation processing module is connected to the battery management module; The carrier extraction module is used to extract the first carrier signal from the power supply bus, and the demodulation processing module is used to demodulate the first carrier signal into the battery parameter.

15. The battery system according to claim 14, characterized in that: The carrier extraction module includes an induction coil, which is arranged at the periphery of the power supply bus and extracts the first carrier signal by electromagnetic induction.

16. An electrical equipment, characterized in that: A battery system comprising any one of claims 12-15.

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