Smart batteries, battery systems and electric vehicles

Abstract

Smart battery cells, battery systems and electric vehicles are characterized by comprising: a battery cell body, the battery cell body comprising a battery cell top cover, a battery cell shell and a winding core; a battery cell monitoring and management center, which monitors and manages the smart battery cells, the battery cell monitoring and management center being arranged inside the battery cell body, the battery cell monitoring and management center comprising a monitoring module, a management module and a communication module, the monitoring module, the communication module and the management module being electrically connected; and an information transmitter, which transmits information sent by the battery cell monitoring and management center, the information transmitter being arranged outside the battery cell top cover, the battery cell monitoring and management center being connected to the information transmitter. The technical solution provided by the present disclosure can perform timely and accurate detection of battery cells in various situations of electric vehicles, and can adjust and control the battery system in a timely manner according to the different states of the battery cells, effectively improving the reliability and safety of the battery system.

Description

Technical Field

[0001] The present disclosure relates to the field of power battery manufacturing, and in particular to a smart battery cell, a battery system and an electric vehicle. Background Art

[0002] Existing new energy vehicles are typically powered by battery modules composed of multiple single cells, which in turn form a battery system. While the battery management system in current battery systems monitors individual cell information, the monitoring devices, such as voltage and temperature sensors, are located externally to the cells, resulting in a certain degree of deviation in the collected information. Furthermore, current battery systems only monitor the status of a subset of cells, not every single cell.

[0003] Although Chinese patent CN201520788221X provides a technical solution for integrating a battery monitoring IC into a battery cell, this battery cell can only feedback the different status information of the battery cell to the battery management system, which is then controlled uniformly. However, in different states of an electric vehicle, simply feeding back the battery cell status cannot cope with the various complex situations of the battery system. For example, when the electric vehicle is dormant, the battery management system is also dormant. At this time, if only the internal information of the battery cell is fed back, the battery management system cannot process it in a timely manner. Therefore, there is an urgent need for a technical solution that can respond to the different states of the battery cell in various states of an electric vehicle. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present disclosure provides a smart battery cell that can meet the needs of collecting battery cell information and controlling the battery cell in various states of electric vehicles, thereby improving the safety performance of electric vehicles.

[0005] A first aspect of the present disclosure provides a smart battery cell, comprising:

[0006] The battery cell body includes a battery cell top cover, a battery cell shell and a winding core;

[0007] A cell monitoring and management center monitors and manages the smart cell, the cell monitoring and management center is arranged inside the cell body, the cell monitoring and management center includes a monitoring module, a management module and a communication module, the monitoring module, the communication module and the management module are electrically connected; and

[0008] An information transmitter transmits information sent by the battery cell monitoring and management center. The information transmitter is arranged on the outside of the battery cell top cover, and the battery cell monitoring and management center is connected to the information transmitter.

[0009] Preferably, the battery cell monitoring and management center is sealed and fixed on the inner side of the battery cell top cover.

[0010] Preferably, a mounting position is provided on the battery cell top cover, the mounting position protrudes toward the outside of the smart battery cell, the battery cell monitoring and management hub is assembled in the mounting position, and the height of the mounting position matches the thickness of the battery cell monitoring and management hub.

[0011] Preferably, a buckle is provided on the outside of the installation position, and the information transmitter is fixed to the installation position via the buckle.

[0012] Preferably, the communication module communicates with the information transmitter via wireless transmission.

[0013] Preferably, the monitoring module includes an information collection unit, and the management module includes an information storage unit and a battery cell management unit.

[0014] Preferably, the information collection unit includes a temperature sensor, which is external to the battery cell monitoring and management hub, fixed on a temperature measurement point inside the smart battery cell, and electrically connected to the battery cell monitoring and management hub.

[0015] Preferably, the information acquisition unit includes a temperature acquisition circuit, and the temperature acquisition circuit is integrated inside the battery cell monitoring and management center.

[0016] Preferably, the information acquisition unit includes a pressure sensor, which is fixed on the battery cell top cover and electrically connected to the battery cell monitoring and management hub.

[0017] Preferably, the information acquisition unit includes a pressure acquisition circuit, and the pressure acquisition circuit is integrated inside the battery cell control center.

[0018] Preferably, the information acquisition unit includes a voltage monitoring circuit, the monitoring circuit is integrated inside the battery cell monitoring and management center, and the voltage monitoring circuit is electrically connected to the battery cell top cover.

[0019] Preferably, the voltage monitoring circuit is electrically connected to the battery cell top cover via a controllable switch, and the controllable switch is controlled by the battery cell monitoring management center.

[0020] Preferably, the cell management unit includes a cell balancing circuit, which is integrated in the cell management unit and electrically connected to the cell top cover, and can balance the voltage of the smart cell.

[0021] Preferably, the information storage unit is electrically connected to the information acquisition unit and the battery cell management unit, the information storage unit can store the information in the information acquisition unit, and the information in the information storage unit can be called by the battery cell management unit.

[0022] Preferably, the battery cell management unit includes an early warning circuit, which is integrated in the battery cell management unit and electrically connected to the information storage unit, and can issue an early warning when the smart battery cell is abnormal.

[0023] Preferably, the battery cell management unit is electrically connected to the communication module.

[0024] A second aspect of the present disclosure provides a battery system, including a power supply battery and a battery management system, wherein the power supply battery is composed of a plurality of the smart battery cells provided in the first aspect of the present disclosure, which are electrically connected, and the battery management system is electrically connected to the information transmitter, and further communicatively connected to the battery cell monitoring and management hub;

[0025] Furthermore, the battery management system is electrically connected to the information transmitter of each of the smart cells in the power supply battery.

[0026] A third aspect of the present disclosure provides an electric vehicle, comprising the battery system provided in the second aspect of the present disclosure.

[0027] The smart battery cells, battery systems, and electric vehicles provided by the present disclosure can perform timely and accurate detection of battery cells in various situations of electric vehicles, and can adjust and control the battery system in a timely manner according to the different states of the battery cells, effectively improving the reliability and safety of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of an embodiment of a battery cell monitoring and management hub.

[0029] Figure 2 It is a three-dimensional schematic diagram of the smart battery cell.

[0030] Figure 3 Schematic diagram of the cross section of the smart battery cell.

[0031] Description of Reference Numerals

[0032] Battery body 1 Battery top cover 11

[0033] Installation position 111 Battery shell 12

[0034] Core 13 Battery Cell Monitoring and Management Center 2

[0035] Monitoring module 21 Management module 22

[0036] Communication module 23 Information transmitter 3 DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the concepts and technical effects of the present disclosure in conjunction with the embodiments to fully understand the purpose, features, and effects of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present disclosure.

[0038] In the description of the embodiments of the present disclosure, if orientation descriptions are involved, the orientations or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present disclosure 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. Therefore, they cannot be understood as limitations on the present disclosure.

[0039] In the description of the embodiments of the present disclosure, if a feature is referred to as being "set", "fixed", "connected", or "installed" on another feature, it may be directly set, fixed, or connected on the other feature, or it may be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present disclosure, if "several" is involved, it means more than one; if "multiple" is involved, it means more than two; if "greater than", "less than", or "exceeds" is involved, it should be understood as not including the number itself; if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] Reference Figure 2 、 Figure 3 In a first aspect, the present disclosure provides a smart battery cell, comprising a battery cell body 1, a battery cell monitoring and management hub 2, and an information transmitter 3. The battery cell body 1 is the main part of the smart battery cell, comprising a battery cell top cover 11, a battery cell shell 12, and a winding core 13, wherein the winding core 13 is arranged inside the battery cell shell 12; the battery cell monitoring and management hub 2 comprises a monitoring module 21, a management module 22, and a communication module 23, wherein the monitoring module 21, the communication module 22, and the management module 23 are electrically connected; the information transmitter 3 is arranged outside the battery cell top cover 11 and connected to the battery cell monitoring and management hub 2.

[0041] The winding core 13 can be connected to the cell cover 11 alone or to the cell cover 11 and the cell casing 12. After being assembled in the cell casing 12, the winding core 13 needs to be injected with electrolyte and sealed by the cell cover 11. The winding core 13 includes positive electrode material, negative electrode material, and separator material. Under the action of the electrolyte, a potential difference will appear between the positive and negative electrode materials. By electrically connecting the positive and negative electrode materials to the cell cover 11 or the cell cover 11 and the cell casing 12, a potential difference can be generated between the positive and negative electrode columns on the cell cover 11, thereby enabling the entire cell to have power supply capability.

[0042] Due to the presence of electrolyte, when the battery cell monitoring and management center 2 is set inside the smart battery cell, it is necessary to ensure sealing, mainly to ensure the sealing of the battery cell monitoring and management center 2 and the electrolyte, as well as the sealing of the connection structure between the battery cell monitoring and management center 2 and the battery management system outside the smart battery cell.

[0043] like Figure 2 、 Figure 3 As shown, the battery cell monitoring and management hub 2 is arranged on the battery cell top cover 11. Specifically, the battery cell monitoring and management hub 2 is arranged on the inner side of the battery cell top cover 11. A mounting position 111 is provided on the inner side of the battery cell top cover 11. The mounting position 111 protrudes toward the outer side of the smart battery cell. The height of the mounting position 111 matches the thickness of the battery cell monitoring and management hub 2. The two can be equal. The height of the mounting position 111 in this embodiment is slightly larger than the thickness of the battery cell monitoring and management hub 2, which is convenient for adapting to the dimensional tolerance of the battery cell monitoring and management hub. The battery cell monitoring and management hub 2 is assembled in the mounting position 111 and is sealed and fixed by a sealing structure to ensure that the battery cell monitoring and management hub 2 is insulated from the electrolyte inside the smart battery cell. A buckle is provided on the outer side of the mounting position 111 for fixing the information transmitter 3. Fixing the information transmitter 3 on the back side of the mounting position 111 makes the communication distance between the battery cell monitoring and management hub 2 and the information transmitter 3 very short, reducing the difficulty of the communication connection between the two.

[0044] When communicating and connecting the battery cell monitoring and management hub 2 with the battery management system outside the smart battery cell, there are multiple options, mainly including wired and wireless methods, but each method needs to ensure that the connection between the battery cell monitoring and management hub 2 and the battery management system is highly sealed. In this embodiment, a wireless transmission method is selected, that is, the battery cell monitoring and management hub 2 and the information transmission device 3 are connected by wireless connection. Specifically, the communication module 23 and the information transmission device 3 are connected by wireless connection. The NFC communication method selected in this embodiment completes the wireless communication between the battery cell monitoring and management hub 2 and the information transmitter 3: NFC communicators are respectively set on the communication module 23 of the battery cell monitoring and management hub 2 and the information transmitter 3, and the communication between the two is realized by the NFC communicator. Since the NFC communication method does not require an opening on the battery cell top cover, there is no need to set up an extra sealing structure, which reduces the difficulty of sealing.

[0045] The battery monitoring and management hub 2 requires power before it can enter the power supply state. One solution is for the smart battery to provide power itself. Since the power supply voltage required by the battery monitoring and management hub 2 is usually much lower than the voltage of the smart battery, a voltage transformer circuit is required to adjust the voltage. Another solution is for the smart battery to be powered externally, that is, by the information transmitter 3.

[0046] In this embodiment, the NFC communication method selected not only enables communication between the battery cell monitoring and management hub 2 and the information transmitter 3, but also enables the information transmitter 3 to power the battery cell monitoring and management hub 2. It should be understood that using NFC for power supply in this embodiment is only one option. Similarly, it is also possible to use smart batteries to self-power the battery cell monitoring and management hub 2 and the information transmitter 3 using NFC communication. Both power supply methods can be selected according to actual needs.

[0047] like Figure 1 As shown, in this embodiment, the monitoring module 21 of the battery cell monitoring and management center 2 is responsible for collecting various numerical values ​​inside the smart battery cell, such as: the voltage value of the smart battery cell, the temperature value inside the smart battery cell, the pressure value inside the smart battery cell, etc. The monitoring module 21 transmits the collected various numerical values ​​to the management module 22 of the battery cell monitoring and management center 2, which saves and simply processes them, and transmits the processing results to the information transmitter 3 by the communication module 23, and then transmits them to the battery management system by the information transmitter 3.

[0048] The monitoring module 21 includes information collection units. The number and type of information collection units can be set based on the data to be collected. In this embodiment, three types of information collection units are included: a voltage information collection unit, a temperature information collection unit, and a pressure information collection unit. Providing one for each information collection unit can reduce the size of the monitoring module 21 itself while ensuring its monitoring function. This can also reduce the size of the battery cell monitoring and management hub 2, reducing the space required for the internal battery cell monitoring and management hub 2.

[0049] The voltage information acquisition unit includes a voltage monitoring circuit, which is integrated into the battery cell monitoring and management center 2, specifically, into the monitoring module 21. The voltage monitoring circuit is electrically connected to the top cover 11 of the smart battery cell. Furthermore, it is electrically connected to the positive and negative poles on the top cover 11, respectively, to collect the potential difference between the positive and negative poles of the smart battery cell. The voltage monitoring circuit is also electrically connected to the management module 22, transmitting the collected data to the management module 22 for processing. Furthermore, a controllable switch is provided between the voltage monitoring circuit and the positive and negative poles on the top cover 11. The controllable switch can control whether the voltage monitoring circuit is electrically connected to the positive and negative poles of the smart battery cell, thereby achieving controllable voltage collection of the smart battery cell. The controllable switch is controlled by the management module 22, controlling the voltage monitoring circuit to collect the voltage of the smart battery cell in certain situations and not to collect the voltage of the smart battery cell in other situations. For example, when the battery cell stops working, the voltage collection of the smart battery cell can be stopped, reducing the power consumption of the battery cell monitoring and management center 2.

[0050] There are many ways to set up the temperature acquisition unit. One setting method is: the temperature sensor is placed outside the main body of the battery cell monitoring and management center 2, fixed at the temperature collection point, and electrically connected to the battery cell monitoring and management center 2. This method can more accurately collect the temperature of a fixed area inside the smart battery cell. It is suitable for situations where the temperature of a certain point in the smart battery cell is crucial to the status monitoring of the smart battery cell, such as: when the smart battery cell is out of control, the pressure relief valve will open to relieve pressure. At this time, the temperature at the pressure relief valve is the critical value of the thermal runaway temperature of the battery cell. The temperature of other areas may deviate. If the temperature of other areas is collected, the battery cell status cannot be monitored most accurately. Therefore, the temperature sensor can be set at the pressure relief valve on the battery cell top cover 11, which can effectively improve the temperature measurement accuracy of the smart battery cell. In this embodiment, the temperature sensor is set at the pressure relief valve on the battery cell top cover 11 to monitor the temperature of the smart battery cell.

[0051] Another configuration for the temperature acquisition unit is to integrate the temperature acquisition circuitry used to collect the internal temperature of the smart battery cell within the battery cell monitoring and management hub 2. This approach allows the temperature acquisition unit to be integrated within the battery cell management hub 2. Sealing the battery cell monitoring and management hub 2 also seals the temperature acquisition unit. Because there is no external temperature sensor, sealing the battery cell monitoring and management hub 2 is simple, making it suitable for smart batteries that do not require high-resolution fixed-point temperature monitoring.

[0052] There are many ways to set up the pressure acquisition unit. One setting method is: the pressure sensor is placed outside the main part of the battery cell monitoring and management center 2, fixed in the pressure acquisition area, and electrically connected to the battery cell monitoring and management center 2. Due to the inconsistent structures of the various parts of the smart battery cell, the pressures experienced by each part are not the same. This solution can accurately monitor the pressure change state of a certain part of the smart battery cell and is suitable for judging the type of battery cell state based on the pressure of a certain area inside the smart battery cell. For example, a pressure relief valve is provided on the top cover 11 of the smart battery cell to discharge the gas inside the smart battery cell when the smart battery cell thermal runaway occurs. When the smart battery cell thermal runaway occurs, the pressure relief valve will open to exhaust. At this time, the pressure at the pressure relief valve reaches a critical value. If the pressure sensor is set near the pressure relief valve, the smart battery cell can be controlled in time according to the pressure change of the pressure relief valve, mainly to provide an early warning of thermal runaway of the smart battery cell. In this embodiment, the pressure sensor is set at the pressure relief valve of the battery cell top cover 11 to monitor the pressure of the smart battery cell.

[0053] Another configuration for the pressure acquisition unit is to integrate the pressure acquisition circuitry used to collect the internal pressure of the smart cell within the cell monitoring and management hub 2. This approach allows the pressure acquisition unit to be integrated within the cell monitoring and management hub 2. Sealing the cell monitoring and management hub 2 also seals the pressure acquisition unit. Because there is no external pressure sensor, sealing the cell monitoring and management hub 2 is much easier. This approach is suitable for smart cells that only require rough monitoring of pressure changes in the smart cell.

[0054] The management module 22 includes an information storage unit and a cell management unit. The information storage unit is electrically connected to the cell management unit and is responsible for storing information collected by the monitoring module 21. The information in the information storage unit can be accessed by the cell management unit. The information storage unit can also store information about the smart cell itself, such as the model, production date, and batch number of the smart cell. This information can be transmitted by the cell management unit to a system external to the cell during performance testing of the smart cell, facilitating traceability of the smart cell. The cell management unit is the core of the cell monitoring and management hub 2. It can extract information stored in the information storage unit, perform simple processing, and transmit the processed information to the battery management system external to the smart cell. The cell management unit can also receive information transmitted by the battery management system external to the smart cell to control the smart cell. The internal circuit design of the cell management unit can implement a variety of different functions, such as active balancing and cell abnormality warning. In this embodiment, a voltage balancing circuit and a voltage warning circuit are provided within the cell management unit.

[0055] The voltage balancing circuit is responsible for voltage balancing of the smart battery cells, and can balance the voltage of the smart battery cells according to the information sent by the battery management system outside the smart battery cells: the voltage balancing circuit is electrically connected to the battery cell top cover 11, and when it receives the charging signal from the battery management system, it controls the smart battery cells to cooperate with other smart battery cells to perform charging; when it receives the discharge signal from the battery management system, it controls the smart battery cells to discharge. In this embodiment, when performing the discharge operation, since the communication module 22 and the information transmitter 3 use NFC communication, the discharge can choose to cooperate with other smart battery cells for discharge, or it can discharge to the side of the information transmitter 3 through the communication module 22.

[0056] The voltage warning circuit is responsible for waking up the battery management system when the voltage is abnormal and the external battery management system is dormant, providing a warning of abnormal voltages within the smart cell. When the electric vehicle stops operating, the battery management system enters a dormant state and no longer responds to battery system anomalies. During this period, any battery cell problems cannot be promptly addressed or an alarm issued. In this embodiment, a voltage warning circuit is provided within the smart cell. This circuit is electrically connected to an information storage unit and processes the smart cell voltage data stored in the information storage unit in real time. When the data is abnormal, it immediately sends a wake-up signal to the smart cell's external battery management system via the communication module 22, waking up the battery management system and transmitting the abnormal voltage value. The battery management system then processes and determines the status of the smart cell. Furthermore, temperature and pressure warning circuits can be provided within the smart cell as needed, similar to the voltage warning circuit.

[0057] The communication module 23 is electrically connected to the management module 22 and integrated in the battery cell monitoring and management center 2. It is used to send the information in the battery monitoring and management center 2 to the information transmitter 3. Different smart batteries can use different communication modules 23. The selection can be made on the premise of ensuring that the communication module 23 matches the information transmitter 3. In this embodiment, the selected NFC communication device communicates with the information transmitter 3. The NFC communication device includes an NFC driver and a communication transceiver.

[0058] The second aspect of the present disclosure provides a battery system, including a power supply battery and a battery management system. The power supply battery is composed of a plurality of smart battery cells provided in the first aspect of the present disclosure. It can be composed of a battery module composed of several smart battery cells, and then a power supply battery composed of multiple battery modules. It can also be composed of a large number of smart battery cells directly forming a power supply battery. The battery management system is communicatively connected to the smart battery cells. Specifically, the battery management system is electrically connected to the information transmitter 3, and is communicatively connected to the battery cell monitoring and management center 2 through the information transmitter. Since a battery cell monitoring and management center 2 is provided inside each smart battery cell, after the smart battery cells form a power supply battery, it can be realized that each smart battery cell is communicatively connected to the battery management system, thereby enabling the battery management system to monitor, manage and control each battery cell in real time.

[0059] The battery management system receives information from the battery cell monitoring and management center 2, processes the information, determines the status of the smart battery cell based on the processing results, and adjusts the battery system according to the different states of the smart battery cell: when voltage balancing is required, the battery management system will send voltage balancing information to the smart battery cell, and the smart battery cell can perform voltage balancing on its own based on the received information. Since the status of each smart battery cell in the battery system disclosed in this disclosure is monitored in real time, it is possible to perform voltage balancing on only a certain smart battery cell or some smart batteries, while other smart batteries remain unchanged, thereby improving the accuracy of voltage balancing of the battery system. The battery management system can also issue an early warning based on the information processing results issued by the battery cell monitoring and management center 2. For example, when the temperature or pressure of the smart battery cell exceeds the early warning value, the battery management system will issue an early warning signal.

[0060] The battery cell monitoring and management center 2 of the smart battery cell disclosed in the present invention also has a simple data processing capability, and can simply process the detection data inside the smart battery cell, with a focus on processing temperature values ​​and pressure values. The function of this data processing is mainly to wake up the battery management system in time when the battery management system is in sleep mode. After waking up, the battery cell monitoring and management center 2 still needs to send abnormal signals to the battery management system for processing and judgment, further confirm the status of the smart battery cell, and perform corresponding operations under unified control of the battery management system according to the status. When the battery management system is not in sleep mode, the battery cell monitoring and management center 2 only provides corresponding data according to the needs of the battery management system, and does not perform data processing. This design principle can greatly reduce the volume of the battery cell monitoring and management center 2, thereby reducing the manufacturing difficulty and cost of the smart battery cell.

[0061] A third aspect of the present disclosure provides an electric vehicle, which is powered by the battery system according to the second aspect of the present disclosure.

[0062] The technical solution provided by this disclosure connects the battery management system with each smart cell within the battery management system, enabling monitoring and control of each smart cell, significantly improving the battery management system's ability to monitor and control the smart cells. The cell monitoring and control hub 2 integrated within the smart cell can more accurately monitor the various values ​​required by the smart cell and can also activate the battery management system under specific circumstances, significantly improving the reliability and safety of the entire battery system.

[0063] While the embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the present disclosure is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person of ordinary skill in the art without departing from the spirit of the present disclosure. Furthermore, the embodiments of the present disclosure and the features within the embodiments may be combined with one another unless there is a conflict.

Claims

1. Smart battery cell, characterized by: include: The battery cell body includes a battery cell top cover, a battery cell shell and a winding core; A cell monitoring and management center monitors and manages the smart cell, the cell monitoring and management center is arranged inside the cell body, the cell monitoring and management center includes a monitoring module, a management module and a communication module, the monitoring module, the communication module and the management module are electrically connected; and An information transmitter, which transmits information sent by the battery cell monitoring and management center. The information transmitter is arranged on the outside of the battery cell top cover, and the battery cell monitoring and management center is connected to the information transmitter; Among them, when the battery management system is in sleep mode, the battery cell monitoring and management center processes the detected data. When the data is abnormal, the battery cell monitoring and management center is used to send a wake-up signal to the battery management system so that the battery management system can judge the status of the smart battery cell based on the wake-up signal.

2. The smart battery cell according to claim 1, characterized in that: The battery cell monitoring and management center is sealed and fixed on the inner side of the battery cell top cover.

3. The smart battery cell according to claim 2, characterized in that: The battery cell top cover is provided with an installation position, which protrudes toward the outside of the smart battery cell. The battery cell monitoring and management center is assembled in the installation position, and the height of the installation position matches the thickness of the battery cell monitoring and management center.

4. The smart battery cell according to claim 3, characterized in that: A buckle is provided on the outside of the installation position, and the information transmitter is fixed to the installation position through the buckle.

5. The smart battery cell according to claim 4, characterized in that: The communication module communicates with the information transmitter via wireless transmission.

6. The smart battery cell according to claim 1, characterized in that: The monitoring module includes an information collection unit, and the management module includes an information storage unit and a battery cell management unit.

7. The smart battery cell according to claim 6, characterized in that: The information collection unit includes a temperature sensor, which is externally disposed in the battery cell monitoring and management hub, fixed on a temperature measurement point inside the smart battery cell, and electrically connected to the battery cell monitoring and management hub.

8. The smart battery cell according to claim 6, characterized in that: The information acquisition unit includes a temperature acquisition circuit, and the temperature acquisition circuit is integrated inside the battery cell monitoring and management center.

9. The smart battery cell according to claim 6, characterized in that: The information collection unit includes a pressure sensor, which is fixed on the battery cell top cover and electrically connected to the battery cell monitoring and management hub.

10. The smart battery cell according to claim 6, characterized in that: The information acquisition unit includes a pressure acquisition circuit, and the pressure acquisition circuit is integrated inside the battery cell control center.

11. The smart battery cell according to claim 6, characterized in that: The information collection unit includes a voltage monitoring circuit, which is integrated into the battery cell monitoring and management center and is electrically connected to the battery cell top cover.

12. The smart battery cell according to claim 11, characterized in that: The voltage monitoring circuit is electrically connected to the battery cell top cover via a controllable switch, and the controllable switch is controlled by the battery cell monitoring management center.

13. The smart battery cell according to claim 6, characterized in that: The cell management unit includes a cell balancing circuit, which is integrated in the cell management unit and electrically connected to the cell top cover to balance the voltage of the smart cell.

14. The smart battery cell according to claim 6, characterized in that: The information storage unit is electrically connected to the information acquisition unit and the battery cell management unit. The information storage unit can store the information in the information acquisition unit, and the information in the information storage unit can be called by the battery cell management unit.

15. The smart battery cell according to claim 6, characterized in that: The battery cell management unit includes an early warning circuit, which is integrated in the battery cell management unit and electrically connected to the information storage unit, and can issue an early warning when an abnormality occurs in the smart battery cell.

16. The smart battery cell according to claim 6, characterized in that: The battery cell management unit is electrically connected to the communication module.

17. A battery system, characterized in that It comprises a power supply battery and a battery management system, wherein the power supply battery is composed of a plurality of smart battery cells according to any one of claims 1 to 16 electrically connected, and the battery management system is electrically connected to the information transmitter, and further communicatively connected to the battery cell monitoring and management hub; Furthermore, the battery management system is electrically connected to the information transmitter of each of the smart cells in the power supply battery.

18. An electric vehicle, characterized in that A battery system comprising the battery system of claim 17.

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