Battery cell integrated control system and battery cell adopting same
By integrating the control system on the battery cell, real-time detection and adjustment of the internal parameters of the battery cell is solved, and the problem of difficulty in monitoring and early warning of existing battery cells is improved, and the safety and ease of use of the battery are improved.
Patent Information
- Application Number
- CN202323403159.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-13
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-12-13
AI Technical Summary
It is difficult to achieve timely and effective monitoring and early warning of existing batteries, and the internal parameters cannot be accurately monitored, making it difficult to ensure the safety of use and storage.
Provide a battery cell integrated control system, including a detection module, a control module, a data transmission module and a power supply module. By electrically connecting it with the positive and negative poles of the battery cell, real-time detection and adjustment of the internal parameters of the battery cell are realized. , and data transmission is carried out through the wireless transmission module.
Timely and precise monitoring and adjustment of each battery cell is achieved, the ease of use and safety of the battery is improved, and early warning information can be issued in a timely manner to avoid the deterioration of abnormal situations.
Smart Images
Figure CN222483470U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electronic energy storage technology, and in particular to a battery cell integrated control system and a battery cell using the same. Background Art
[0002] The cell is the most basic component of a battery. It is a unit that stores and releases electrical energy, usually by converting chemical energy into electrical energy through chemical reactions. The types and structures of cells vary depending on the type and application. Common types include lithium-ion batteries, nickel-metal hydride batteries, and lead-acid batteries. Current application scenarios include mobile phones, laptops, electric vehicles, etc.
[0003] Since the battery cell is the place where chemical reactions occur and the internal activity is high, it is necessary to monitor various internal parameters to ensure the safety of use and storage. However, the main battery cells on the market can only be tested as a whole through external equipment or control units, and timely and effective monitoring and early warning are not possible. Utility Model Content
[0004] The present application mainly provides a battery cell integrated control system and a battery cell using the same, so as to solve the problem that it is difficult to accurately monitor the battery cells and difficult to locate abnormal battery cells.
[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a battery cell integrated control system, which is electrically connected to the positive electrode and the negative electrode of the battery cell respectively, including:
[0006] A detection module, used to detect data parameters of the battery cell;
[0007] A control module, the control module is electrically connected to the detection module and the negative electrode, the control module receives and stores the data parameters, and adjusts the output of the battery cell based on the data parameters;
[0008] A data transmission module, the data transmission module is electrically connected to the control module and is used for wirelessly transmitting the data parameters and adjusting the control module;
[0009] A power supply module is electrically connected to the data transmission module and the control module, and is used to provide electric energy for the battery cell integrated control system.
[0010] Wherein, the detection module includes a temperature sensor, and the temperature sensor is used to collect the temperature of the battery cell.
[0011] Wherein, the detection module includes an impedance detection circuit, and the impedance detection circuit is used to detect the internal impedance of the battery cell.
[0012] Wherein, the control module includes a control unit and a power switch unit electrically connected to each other, the negative electrode includes a first end and a second end, the power switch unit is electrically connected between the first end and the second end, and the control unit controls the switching frequency of the power switch unit to adjust the output of the battery cell.
[0013] The control module further includes a shunt, which is electrically connected between the power switch unit and the second end, and is used to sample the charge and discharge current of the battery cell.
[0014] Wherein, the control unit includes a single chip microcomputer, and the power switch unit includes an IGBT module.
[0015] Wherein, the control unit sends out detection and warning information based on the data parameters.
[0016] Among them, the data transmission module includes a radio frequency circuit and an antenna interface, the radio frequency circuit is electrically connected to the control module and the power module; the antenna interface is electrically connected to the radio frequency circuit, and the antenna interface is used to fix the communication antenna.
[0017] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a battery cell, including a core body and the above-mentioned battery cell integrated control system, and the core body is electrically connected to the battery cell integrated control system.
[0018] Among them, it also includes an outer shell, a control board and a cover plate, the core body is arranged in the outer shell, the battery cell integrated control system is arranged on the control board, the positive electrode and the negative electrode are located on one side of the core body and are electrically connected to the control board; the cover plate is arranged on the side of the control board away from the core body, and the cover plate and the outer shell form a cavity, and the core body and the control board are arranged inside the cavity.
[0019] The beneficial effect of the present application is as follows: Different from the prior art, the present application discloses a battery cell integrated control system and a battery cell using the same, which directly obtains data parameters of each battery cell by directly performing parameter measurement sampling and analysis calculation on each battery cell, and simultaneously calculates and outputs relevant information of the battery cell and adjusts the battery cell output according to the data parameters, thereby controlling the battery status more timely and accurately and improving the battery's ease of use and safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:
[0021] Figure 1 It is a module structure diagram of a battery cell integrated control system in one embodiment of the present application;
[0022] Figure 2 It is a schematic diagram of the explosion structure of a battery cell in one embodiment of the present application.
[0023] Description of main component symbols:
[0024] 10-battery cell; 100-battery cell integrated control system; 110-detection module; 111-temperature sensor; 112-impedance detection circuit; 120-control module; 121-control unit; 122-power switch unit; 123-shunt; 130-data transmission module; 131-RF circuit; 132-antenna interface; 140-power module; 200-core; 210-positive electrode; 220-negative electrode; 221-first end; 222-second end; 300-housing; 400-control board; 500-cover. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.
[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0028] See also Figure 1 The embodiment of the present application includes a battery cell integrated control system 100, which is electrically connected to the positive electrode 210 and the negative electrode 220 of the battery cell 10, respectively, and includes a detection module 110, a control module 120, a data transmission module 130 and a power supply module 140, wherein:
[0029] The detection module 110 is used to detect data parameters of the battery cell 10 .
[0030] The control module 120 is electrically connected to the detection module 110 and the negative electrode 220 . The control module 120 receives and stores data parameters and adjusts the output of the battery cell 10 based on the data parameters.
[0031] The data transmission module 130 is electrically connected to the control module 120 and is used for wirelessly transmitting data parameters and adjusting the control module 120 .
[0032] The power module 140 is electrically connected to the data transmission module 130 and the control module 120 , and is used to provide power to the battery cell integrated control system 100 .
[0033] The battery cell 10 is the smallest unit constituting the battery module, and supplies electrical energy to the outside by converting chemical energy into electrical energy.
[0034] Specifically, the detection module 110 is arranged toward the core body 200. The detection module 110 in this embodiment is arranged inside the battery cell 10 to directly obtain data parameters inside the battery cell 10. The data parameters correspond to the specific functions of the detection module 110, including but not limited to temperature, current, voltage, etc. The functions of the detection module 110 include but are not limited to temperature detection, current detection, voltage detection, etc.
[0035] The control module 120 is electrically connected to the detection module 110. The detection module 110 transmits the detected data parameters to the control module 120. The control module 120 stores preset values of corresponding parameters and compares the real-time data parameters with the preset values. When the data parameters exceed the preset value range, the control module 120 will determine that the corresponding battery cell 10 is in an abnormal state, thereby reducing the external output of the battery cell 10 to avoid further deterioration of the abnormal situation, thereby improving the safety of the battery cell 10 and the battery.
[0036] In this embodiment, the data transmission module 130 transmits data to the outside through wireless communication. The data transmission includes but is not limited to transmitting the data parameters inside the battery cell 10 to an external server. Adjusting the control module 120 includes but is not limited to transmitting data from the outside to the control module 120, thereby adjusting, modifying or upgrading the control logic and preset values of the control module 120.
[0037] The power module 140 is directly or indirectly electrically connected to the detection module 110 , the control module 120 , and the data transmission module 130 , respectively, to provide the required power to other modules.
[0038] The battery cell integrated control system 100 of the present embodiment directly obtains the data parameters of each battery cell 10 by directly performing parameter measurement sampling and analysis calculation on each battery cell 10, and simultaneously calculates and outputs the relevant information of the battery cell 10 and adjusts the output of the battery cell 10 according to the data parameters, thereby controlling the battery status more timely and accurately, making the battery cell 10 and the battery more user-friendly and safer.
[0039] In one embodiment, the detection module 110 may include a temperature sensor 111, and the temperature sensor 111 is used to collect the temperature of the battery cell 10. The temperature sensor 111 is connected to the inside of the battery cell 10 to directly detect the temperature inside the battery cell 10. In this embodiment, the temperature sensor 111 may use a resistor with a negative temperature coefficient. When the temperature rises, the resistance decreases. The control module 120 detects the resistance change of the temperature sensor 111 and compares it with the temperature characteristic table to obtain the internal temperature change of the battery cell 10.
[0040] In one embodiment, the detection module 110 may include an impedance detection circuit 112, which is used to detect the internal impedance of the battery cell 10. In this embodiment, the impedance detection circuit 112 connects two sampling lines to the negative electrode 220 and the positive electrode 210 of the battery cell 10 respectively, and the control module 120 sends a fixed frequency AC signal to the battery cell 10 through the sampling line, and then uses a four-wire measurement method to detect the internal impedance of the battery cell 10 to obtain the electrochemical impedance spectrum of the battery cell 10 to determine the health status of the battery cell 10.
[0041] In one embodiment, the control module 120 may include a control unit 121 and a power switch unit 122 that are electrically connected to each other, the negative electrode 220 includes a first end 221 and a second end 222, the power switch unit 122 is electrically connected between the first end 221 and the second end 222, and the control unit 121 controls the switching frequency of the power switch unit 122 to adjust the output of the battery cell 10.
[0042] Specifically, when the data parameters of the battery cell 10 are normal, the control unit 121 turns on the power switch unit 122, and the first end 221 and the second end 222 of the negative electrode 220 are conductive; when the data parameters of the battery cell 10 are abnormal, the control unit 121 reduces the frequency of the power switch unit 122 or directly turns it off, thereby controlling the external output of the battery cell 10.
[0043] In one embodiment, the control module 120 may further include a shunt 123 , which is electrically connected between the power switch unit 122 and the second end 222 . The shunt 123 is used to sample the charge and discharge current of the battery cell 10 .
[0044] In one embodiment, the control unit 121 may include a single-chip microcomputer, and the power switch unit 122 includes an IGBT module. The single-chip microcomputer has a built-in flash memory, which can realize the collection, storage and calculation of data parameters, and pre-store logic and data to facilitate real-time adjustment of the battery cell 10. In this embodiment, the single-chip microcomputer also stores a timed wake-up logic. When the system is dormant, it starts and detects the battery cell 10 regularly. When the data parameters are abnormal, a signal is sent and the host is started to perform corresponding early warnings and disposal. The host is a general control device that coordinates and controls multiple battery cells 10.
[0045] In one embodiment, the control unit 121 sends out detection and warning information based on the data parameters. The control unit 121 compares the detected data parameters with preset values, and when the data parameters exceed the preset value range, sends out warning information and continuously outputs detection information.
[0046] In this embodiment, the control unit 121 calculates the number of charge and discharge times of the battery cell 10 by collecting the direction of current flow; the internal resistance of the battery cell 10 under different working conditions can be calculated through the impedance detection circuit 112. The change in the internal temperature of the battery cell 10 is calculated by the change in the resistance of the temperature sensor 111, and the current voltage of the battery cell 10 is calculated by the ADC sampling circuit (not shown) in the detection module 110. Through the voltage, current, and internal resistance of the battery cell 10, the remaining capacity and remaining service life of the current battery cell 10 can be obtained through calculation by the control unit 121.
[0047] In one embodiment, the data transmission module 130 includes a radio frequency circuit 131 and an antenna interface 132. The radio frequency circuit 131 is electrically connected to the control module 120 and the power module 140. The antenna interface 132 is electrically connected to the radio frequency circuit 131. The antenna interface 132 is used to fix the communication antenna. In other embodiments, other methods can also be used for wireless communication.
[0048] See also Figure 2This embodiment also provides a battery cell 10, including a core body 200, and also including the battery cell integrated control system 100 as described above, and the battery cells 10 are all electrically connected to the battery cell integrated control system 100. In a specific application scenario, the battery module may include multiple battery cells 10 connected in parallel, and each battery cell 10 is equipped with a corresponding battery cell integrated control system 100. The battery cell integrated control system 100 monitors and adjusts each battery cell 10 separately to ensure that when a battery cell 10 is abnormal, it can be detected and controlled in time to avoid further expansion of the abnormality of the battery cell 10, thereby improving the accuracy of control and the safety of the battery.
[0049] Please continue reading Figure 2 , is a schematic diagram of an exploded structure of a battery cell in an embodiment, wherein the battery cell 10 further comprises a housing 300, a control board 400 and a cover plate 500, the core body 200 is arranged in the housing 300, the battery cell integrated control system 100 is arranged on the control board 400, the positive electrode 210 and the negative electrode 220 are located on one side of the core body 200 and are electrically connected to the control board 400; the cover plate 500 is arranged on the side of the control board 400 away from the battery cell 10, and the cover plate 500 and the housing 300 form a cavity, and the battery cell 10 and the control board 400 are arranged inside the cavity. The outer shape of the rectangular parallelepiped formed by the housing 300 and the cover plate 500 in this embodiment is only an example, and is not a limitation on the overall shape of the battery.
[0050] The above descriptions are merely embodiments of the present application and are not intended to 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 integrated control system, electrically connected to the positive electrode and the negative electrode of the battery cell, characterized in that: include: A detection module, used for detecting data parameters of the battery cell; A control module, the control module is electrically connected to the detection module and the negative electrode, the control module receives and stores the data parameters, and adjusts the output of the battery cell based on the data parameters; A data transmission module, the data transmission module is electrically connected to the control module and is used for wirelessly transmitting the data parameters and adjusting the control module; A power supply module is electrically connected to the data transmission module and the control module, and is used to provide electric energy for the battery cell integrated control system.
2. The battery cell integrated control system according to claim 1, characterized in that: The detection module includes a temperature sensor, and the temperature sensor is used to collect the temperature of the battery cell.
3. The battery cell integrated control system according to claim 1, characterized in that: The detection module includes an impedance detection circuit, and the impedance detection circuit is used to detect the internal impedance of the battery cell.
4. The battery cell integrated control system according to claim 1, characterized in that: The control module includes a control unit and a power switch unit electrically connected to each other, the negative electrode includes a first end and a second end, the power switch unit is electrically connected between the first end and the second end, and the control unit controls the switching frequency of the power switch unit to adjust the output of the battery cell.
5. The battery cell integrated control system according to claim 4, characterized in that: The control module further includes a shunt, which is electrically connected between the power switch unit and the second end, and is used to sample the charge and discharge current of the battery cell.
6. The battery cell integrated control system according to claim 4, characterized in that: The control unit includes a single chip microcomputer, and the power switch unit includes an IGBT module.
7. The battery cell integrated control system according to claim 4, characterized in that: The control unit sends out detection and warning information based on the data parameters.
8. The battery cell integrated control system according to claim 1, characterized in that: The data transmission module includes a radio frequency circuit and an antenna interface, the radio frequency circuit is electrically connected to the control module and the power module; the antenna interface is electrically connected to the radio frequency circuit, and the antenna interface is used to fix the communication antenna.
9. A battery cell, comprising a core body, characterized in that: It also includes the battery cell integrated control system according to any one of claims 1 to 8, and the battery cells are all electrically connected to the battery cell integrated control system.
10. The battery cell according to claim 9, characterized in that: It also includes an outer shell, a control board and a cover plate, the core body is arranged in the outer shell, the battery cell integrated control system is arranged on the control board, the positive electrode and the negative electrode are located on one side of the core body and are electrically connected to the control board; the cover plate is arranged on the side of the control board away from the core body, and the cover plate and the outer shell form a cavity, and the core body and the control board are arranged inside the cavity.