Lithium battery module state display unit

Abstract

The utility model belongs to the technical field of lithium battery manufacturing, and discloses a lithium battery module state display unit which comprises a printed circuit board, and a master controller, a power supply module, a communication module and a touch display screen which are arranged on the printed circuit board, the master controller is electrically connected with the power supply module and the communication module through the printed circuit board; the touch display screen is arranged on the back surface of the printed circuit board and is electrically connected with the master controller through a display flat cable; and after being assembled, the lithium battery module state display unit is independent of the lithium battery module as a whole and is electrically connected with the lithium battery module. According to the utility model, through multi-aspect structural improvement, the integral structural design is simplified, the independence, expandability, convenience, stability and safety of the lithium battery module are improved when the lithium battery module is connected by adopting the universal interface and the touch display screen, and the lithium battery module can be widely applied to manufacturing of various lithium batteries.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and particularly relates to a state display unit of a lithium battery module. Background Art

[0002] With the rapid development of technology and the continuous growth of energy demand, lithium batteries, as a kind of energy storage device with high efficiency, light weight and high energy density, have been widely used in many fields, such as electric vehicles, portable electronic devices, energy storage power stations, etc. However, the performance and safety of lithium batteries largely depend on the effectiveness of their management systems.

[0003] One of the core tasks of lithium battery module management is to monitor and accurately evaluate the state of the lithium battery module in real time to ensure the safe operation and optimized use of the battery. In this process, the display device plays a crucial role. The display function of early lithium battery management systems was relatively simple and often could only provide basic battery power information. However, with the progress of technology, the user's demand for richer, more accurate and more intuitive battery state information has become increasingly urgent. Today's display devices not only need to display basic parameters such as the remaining battery power, voltage, current, etc., but also need to be able to reflect in real time key information such as the battery's health status, charging voltage, charging cycle times, temperature distribution, and possible fault warnings, providing users with more comprehensive and intuitive battery state information.

[0004] For example, in the prior art, a lithium battery pack power display component and a display device disclosed in the Chinese utility model patent document No. CN214204996U include: a first display module for displaying the power of the lithium battery pack; a communication module for accessing the battery management system of the lithium battery pack; a controller connected to the communication module on one side and the first display module on the other side, for displaying the power data of the lithium battery pack transmitted by the battery management system received through the first display module; by setting the communication module to be connected to the battery management system of the lithium battery pack, the power data of the lithium battery pack can be obtained in real time through the communication module, and the power of the lithium battery pack can be displayed on the first display module through the controller, so as to realize the timely monitoring of the power of the lithium battery pack in the after-market, ensuring the safety of the lithium battery pack during use. Although this patented technology solves the problem of power display of the lithium battery module, it does not solve the problems of split design, expandability, and the ability to be set on the display screen, and cannot display information on multiple aspects such as health status, safety, power performance, and energy usage through expansion; there are also problems such as the inability to record information such as time logs, complex structure, and difficulty in installation; these problems result in low independence, expandability, and practicability of the current state display unit of the lithium battery module.

[0005] In summary, the state display device of the existing lithium battery module is generally integrated inside the lithium battery module, with poor independence and scalability. It cannot provide users with more comprehensive, accurate, and convenient battery state information as technology continues to develop, so as to meet the needs of wider and more reliable applications of lithium batteries. Summary of the Invention

[0006] The purpose of the present invention is to provide a state display unit for a lithium battery module. Through structural improvement designs in multiple aspects, on the basis of simplifying the structural design, a split-type design independent of the lithium battery module is adopted, which improves the independence and scalability of the state display unit of the lithium battery module. At the same time, it improves the convenience, stability, and safety during transportation, installation, and use. It can provide users with more comprehensive, accurate, and convenient battery state information through later on-demand expansion, and can meet the needs of wider and more reliable applications of lithium batteries.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A state display unit for a lithium battery module, which includes: a printed circuit board and a main control, a power module, a communication module, and a touch display screen arranged on the printed circuit board; the main control is electrically connected to the power module and the communication module through the printed circuit board; the touch display screen is arranged on the back of the printed circuit board and is electrically connected to the main control through a flexible cable; after being assembled, the state display unit of the lithium battery module is set independently of the lithium battery module as a whole and is electrically connected to the lithium battery module.

[0009] Further, it further includes a fixing bracket for fixing the touch display screen and the printed circuit board, and a plurality of fixing buckles are arranged on the edge of the fixing bracket.

[0010] Further, fixing grooves matching the fixing buckles are arranged on the printed circuit board; after the fixing bracket is installed in place, the plurality of fixing buckles are all buckled in the fixing grooves.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The state display unit for a lithium battery module provided by the present invention, through structural improvement designs in multiple aspects, on the basis of simplifying the overall structural design, adopts a split-type structure design, uses a universal interface and a touch display screen, improves the independence, scalability, convenience, stability, and safety when the present invention is connected to the battery module, and can be widely applied to the manufacturing of various lithium batteries to meet the needs of manufacturing, use, and maintenance, etc.

[0013] 2. By setting up a communication module and a universal interface, and adopting an independent split design for the battery module and the lithium battery module status display unit, the present utility model improves independence and scalability, reduces maintenance costs and complexity, and facilitates the on-demand expansion of battery modules without a lithium battery module status display unit in the later stage. The display module can independently upgrade hardware and software, providing users with more comprehensive, accurate, and convenient battery status information without any modification to the battery module, facilitating timely function updates to meet the needs of wider and more reliable applications of lithium batteries.

[0014] 3. The lithium battery module status display unit provided by the present utility model is equipped with a large-size touch display screen, solving problems such as incomplete information display, small size, and difficult recognition of the previous segment display screen. By using a universal interface to connect to the battery module controller, it solves the connection problem between different specifications of battery modules and the display screen module, improves the scalability of the lithium battery module status display unit, and at the same time improves the convenience, stability, and safety during transportation, installation, and use, and can preferably solve the corresponding problems in the prior art.

[0015] 4. To meet the requirement that the content of lithium battery status display covers multiple aspects of information such as battery temperature, power, health status, safety, power performance, and energy usage, in specific applications, the main control of the lithium battery module can adopt advanced MCU, sensor technology, data acquisition and processing algorithms in the prior art, cooperate with a high-performance display interface, and freely expand through a universal interface to obtain more high-precision sensor information for accurately measuring various parameters of the battery. And the powerful data processing ability can quickly analyze and integrate these data, converting them into valuable information presented on the display screen. At the same time, the intelligent display interface design enables users to easily understand and obtain this information, thus making reasonable decisions, such as when to charge and whether to replace the battery.

[0016] 5. Overall, the present utility model simplifies the structural design, unifies the specification dimensions of the lithium battery module status display unit. The display module adopts a universal interface and can be applied to all battery modules of our company, making universal expansion more convenient and increasing the application range of the display module.

[0017] 6. By improving the battery cell components and through structural improvement designs in multiple aspects, the display module reduces the main components to 3. Through the fixing buckles provided on the fixing bracket, the touch display screen can be buckled and fixed to the printed circuit board, which is very convenient for assembly and solves the problem of complex assembly.

[0018] 7. The present utility model can set the battery module through the touch screen, including setting language, date and time, screen brightness, inverter type, etc. Having the parameter setting function improves the utilization rate of the state display unit of this lithium battery module.

[0019] 8. The state display unit of the lithium battery module of the present utility model can not only display the state information of the overall battery module, but also display the state information of individual battery cells, facilitating the timely identification of abnormal individual battery cells; through balanced charging and discharging, overcharging or over-discharging of individual battery cells can be prevented, and the overall service life of the battery can be extended. Description of the Drawings

[0020] Figure 1 is the overall three-dimensional external shape structure schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0021] Figure 2 is the front view structure schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0022] Figure 3 is the rear view structure schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0023] Figure 4 is the right view structure schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0024] Figure 5 is the working process schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0025] Figure 6 is the main page schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0026] Figure 7 is the state interface schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0027] Figure 8 is the setting interface schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0028] Figure 9 is the language setting interface schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0029] Figure 10 is the time setting interface schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0030] Figure 11 is the brightness setting interface schematic diagram of the state display unit of the lithium battery module in the embodiment of the present application;

[0031] Figure 12 It is a schematic diagram of the inverter protocol selection interface of the lithium battery module status display unit in the embodiment of the present application.

[0032] Description of the reference numerals: 1, main control; 2, voltage stabilization module; 3, screen brightness adjustment module; 4, communication module; 5, 32.768KHz clock crystal oscillator; 6, socket; 7, battery; 8, 8MHz crystal oscillator; 9, printed circuit board; 10, touch display screen; 11, fixing bracket; 12, fixing buckle; 13, display screen interface; 14, fixing groove. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] Embodiment 1

[0035] Referring to the attached Figures 1 to 5 , the lithium battery module status display unit provided in this embodiment is a lithium battery module status display unit applied to a lithium battery module supporting an energy storage battery or a power battery module, and includes: a printed circuit board 9 and a main control 1, a power supply module, a communication module 4, and a touch display screen 10 disposed on the printed circuit board 9; the main control 1 is electrically connected to the power supply module and the communication module 4 through the printed circuit board 9; the touch display screen 10 is disposed on the back of the printed circuit board 9 and is electrically connected to the main control 1 through a display cable; after being assembled, the lithium battery module status display unit is independent of the lithium battery module as a whole, rather than being integrated inside the lithium battery module, and is electrically connected to the lithium battery module.

[0036] The display unit further includes a fixing bracket 11 for fixing the touch display screen 10 and the printed circuit board 9, and a plurality of fixing buckles 12 are disposed on the edge of the fixing bracket 11;

[0037] Fixing grooves 14 matching the fixing buckles 12 are disposed on the printed circuit board 9; after the fixing bracket 11 is installed in place, the plurality of fixing buckles 12 are all snapped into the fixing grooves 14.

[0038] In this embodiment, in order to meet the requirement that the content displayed for the lithium battery state covers multiple aspects of information such as the temperature, power, health status, safety, power performance, and energy usage of the battery. In specific applications, the main control of the lithium battery module can adopt advanced MCU, sensor technology, data acquisition and processing algorithms, etc. in the existing technology, and cooperate with a high-performance display interface, which can be freely expanded through a general interface to obtain more high-precision sensor information to accurately measure various parameters of the battery. And the powerful data processing ability can quickly analyze and integrate these data and present them as valuable information on the display screen. At the same time, the intelligent display interface design enables users to easily understand and obtain this information, so as to make reasonable decisions, such as when to charge and whether to replace the battery, etc. These are all existing technologies, and the present utility model will not be specifically expanded and introduced herein.

[0039] The lithium battery module state display unit provided in this embodiment, through structural improvement designs in multiple aspects, on the basis of simplifying the overall structural design, adopts a split design to solve problems such as independence and expandability; connects to the battery module controller using a general interface to solve the connection problem between different specifications of battery modules and the display screen module, and sets a large-size touch display screen to solve problems such as incomplete information display, small size, and difficult recognition of the previous segment display screen, and can better meet the manufacturing and use requirements of various lithium battery modules.

[0040] Embodiment 2

[0041] Refer to Figures 1 to 5 , the lithium battery module state display unit provided in this embodiment is a further improvement on the basis of the above-mentioned Embodiment 1, and it is basically the same as Embodiment 1, the differences are as follows:

[0042] The power supply module includes: a voltage stabilizing module 2 and a socket 6; the socket 6 is a 12V power supply and signal communication socket; the voltage stabilizing module 2 is a 3.3V voltage stabilizing module; the 12V power supply and signal communication socket is connected to the lithium battery module controller, and then the 3.3V voltage stabilizing module supplies power to the main control, screen power supply, etc.; the socket 6 is a designed general interface, which is compatible with the battery module controller of our company.

[0043] The 12V power supply and signal communication socket is arranged outside the printed circuit board 9; the 12V power supply and signal communication socket includes a power line connector and a signal line connector; the power line connector is a 12V positive electrode connector and a negative electrode connector; the signal line connector is a signal line connector for 485 serial communication; the power line connector is used to connect the power supply at the battery module end to supply power to the lithium battery module state display unit; the signal line connector is used to connect the controller at the battery module end for communication functions.

[0044] The communication module 4 is a 485 serial communication module, and the 485 serial communication module is electrically connected to the main control 1, 12V power supply, and signal communication socket;

[0045] An 8MHz crystal oscillator 8 for communication is further provided on the printed circuit board 9; the 8MHz crystal oscillator 8 is electrically connected to the main control 1;

[0046] A screen brightness adjustment module 3 for adjusting the backlight brightness of the touch display screen 10 is further provided on the printed circuit board 9; the screen brightness adjustment module 3 is electrically connected to the power supply module, the main control 1, and the touch display screen 10; the screen brightness adjustment module 3 adopts a solution in the prior art, including methods such as PWM and DC;

[0047] A display screen interface 13 for connecting the touch display screen 10 is further provided on the printed circuit board 9; the display screen interface 13 is connected to the display cable;

[0048] A clock module is further provided on the printed circuit board 9, and the clock module includes a 2.768KHz clock crystal oscillator 5 and a battery 7; the clock module is electrically connected to the main control 1, the 2.768KHz clock crystal oscillator 5, and the battery 7;

[0049] The battery 7 is a button battery, and the model is CR2032 or CR2025.

[0050] See Figure 5 , the working principle of this embodiment is as follows:

[0051] 1. Output display of the main control: Output the ratios of red, green, and blue to display patterns on a 4.3-inch screen or other-sized screens.

[0052] 2. The clock module generates 32.768KHz through the crystal oscillator and communicates with the main control as the Beijing time.

[0053] 3. The change in the screen capacitance value on the surface of the touch screen is converted into coordinate values and sent back to the main control to achieve touch operations.

[0054] 4. The 12V power supply and signal communication socket are connected to the lithium battery module controller wiring, and the 3.3V voltage stabilization module supplies power to the main control, screen power supply, etc.; and communicates with the main control through the serial port.

[0055] Embodiment 3

[0056] Refer to Figures 6 to 12 , based on the above Embodiment 1 and Embodiment 2, a prototype is manufactured and applied and tested. In this embodiment, based on the prototypes of Embodiment 1 and 2, the prior art is adopted to further design the UI interface of the lithium battery module status display unit; Figures 6 to 12The user interface, function display, and parameter setting interface of the lithium battery module status display unit are introduced in detail, which facilitates users to view battery status information and perform relevant settings, improving the convenience and safety of battery management. The software, algorithms, etc. involved in this embodiment are all existing technologies.

[0057] See Figure 6 , which is a schematic diagram of the main page of the lithium battery module status display unit of this embodiment, including:

[0058] Battery level display: Displays the remaining battery level of the battery pack in percentage or numerical form;

[0059] Voltage display: Displays the total voltage of the battery pack;

[0060] Current display: Displays the charging or discharging current of the battery pack;

[0061] Temperature display: Displays the temperature of the battery pack;

[0062] Status indication: Displays the working status of the battery pack, such as charging, discharging, full charge, etc.;

[0063] Other information: Includes information such as battery model and serial number.

[0064] See Figure 7 , which is a schematic diagram of the status interface of this embodiment. The figure shows the detailed status information of the battery pack or single cell, including:

[0065] Single cell voltage: Displays the voltage of each single cell;

[0066] Single cell current: Displays the charging or discharging current of each single cell;

[0067] Single cell temperature: Displays the temperature of each single cell;

[0068] Balancing status: Displays the balancing status of the battery pack;

[0069] Fault information: Displays the fault information of the battery pack or single cell.

[0070] See Figure 8 : This is a schematic diagram of the setting interface of this embodiment. In the figure,

[0071] Displays the setting interface of the lithium battery module status display unit, including:

[0072] Language setting: Sets the language of the display interface;

[0073] Date and time setting: Sets the date and time of the display interface;

[0074] Screen brightness setting: Sets the brightness of the touch display screen;

[0075] Inverter protocol selection: Select the communication protocol that matches the inverter.

[0076] Through actual operation and testing, the software and hardware of the present utility model are combined with each other, and its independence, scalability, convenience, stability and security have all been improved. The displayed content is rich, and it can be widely applied to the manufacture of various lithium batteries, and can meet the needs of the manufacture, use and maintenance of various lithium battery modules.

[0077] In summary, for the above embodiments of the present utility model, the key is to further improve the structure in multiple aspects on the basis of adopting a split structure design to meet the manufacturing and use requirements of lithium battery modules. The present utility model improves the cell assembly. Through the structural improvement design in multiple aspects, the main components of the display module are reduced to 3. By means of the fixing buckle provided on the fixing bracket, the touch display screen can be buckled and fixed to the printed circuit board, which is very convenient for assembly and solves the problem of complex assembly. By setting the communication module and the general interface, the present utility model realizes the independent split design of the battery module and the lithium battery module status display unit, reduces the maintenance cost and complexity, and is convenient for the battery module without the lithium battery module status display unit to be expanded later; the display module can independently upgrade the software without making any changes to the battery module, which is convenient for timely updating functions. Through the touch screen, the present utility model can set the battery module, including setting the language, date and time, screen brightness, inverter type, etc., and the parameter setting function improves the utilization rate of the lithium battery module status display unit. The lithium battery module status display unit of the present utility model can not only display the status information of the overall battery module, but also display the status information of individual cells, which is convenient for timely identifying abnormal individual cells; through balanced charging and discharging, overcharging or over-discharging of individual cells can be prevented, and the overall service life of the battery can be extended.

[0078] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lithium battery module status display unit, characterized in that, It includes: a printed circuit board (9), a main controller (1), a power module, a communication module (4), and a touch display screen (10) disposed on the printed circuit board (9); the main controller (1) is electrically connected to the power module and the communication module (4) through the printed circuit board (9); the touch display screen (10) is disposed on the back of the printed circuit board (9), and is electrically connected to the main controller (1) through a display cable; the lithium battery module status display unit is assembled as a whole and is independently disposed from the lithium battery module, and is electrically connected to the lithium battery module.

2. The state display unit of the lithium battery module according to claim 1, wherein It further includes a fixing bracket (11) for fixing the touch display screen (10) and the printed circuit board (9), and a plurality of fixing buckles (12) are disposed on the edge of the fixing bracket (11).

3. The state display unit of the lithium battery module according to claim 2, characterized in that, Fixing grooves (14) matching with the fixing buckles (12) are disposed on the printed circuit board (9); after the fixing bracket (11) is installed in place, the plurality of fixing buckles (12) are all buckled in the fixing grooves (14).

4. The state display unit of the lithium battery module according to claim 1, characterized in that, The power module includes: a voltage stabilizing module (2) and a socket (6); the socket (6) is a 12V power supply and signal communication socket; the voltage stabilizing module (2) is a 3.3V voltage stabilizing module.

5. The state display unit of the lithium battery module according to claim 4, wherein The 12V power supply and signal communication socket is disposed on the outer side of the printed circuit board (9); the 12V power supply and signal communication socket includes a power line connector and a signal line connector; the power line connector is a 12V positive electrode connector and a negative electrode connector; the signal line connector is a signal line connector for 485 serial port communication.

6. The state display unit of the lithium battery module according to claim 4, wherein The communication module (4) is a 485 serial port communication module, and the 485 serial port communication module is electrically connected to the main controller (1) and the 12V power supply and signal communication socket.

7. The state display unit of the lithium battery module according to claim 1, characterized in that An 8MHz crystal oscillator (8) is further disposed on the printed circuit board (9); the 8MHz crystal oscillator (8) is electrically connected to the main controller (1).

8. The state display unit of the lithium battery module according to claim 1, characterized in that, A screen brightness adjustment module (3) for adjusting the backlight brightness of the touch display screen (10) is further disposed on the printed circuit board (9); the screen brightness adjustment module (3) is electrically connected to the power module, the main controller (1), and the touch display screen (10).

9. The state display unit of the lithium battery module according to claim 1, characterized in that, A display screen interface (13) for connecting the touch display screen (10) is further disposed on the printed circuit board (9); the display screen interface (13) is connected to the display cable.

10. The lithium battery module state display unit according to claim 1, characterized in that, A clock module is further disposed on the printed circuit board (9), and the clock module includes a 2.768KHz clock crystal oscillator (5) and a battery (7); the 2.768KHz clock crystal oscillator (5) is electrically connected to the main controller (1) and the battery (7).

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