Intelligent early warning system and method for lithium battery PACK

Abstract

The invention discloses an intelligent early warning system and method for a lithium battery PACK pack, and relates to the field of battery safety early warning. By arranging the temperature sensor module and the thermal runaway prediction module, the battery temperature and thermal radiation can be monitored in real time, and it is ensured that the battery temperature is within a reasonable range. And by arranging the water-cooling circulating device and the air-cooling device, the lithium battery can be effectively cooled, the temperature of the battery is greatly reduced, and the potential safety hazard in the use process of the lithium battery is reduced. By arranging the external equipment, the current, the voltage, the cycle index and the battery capacity can be monitored in real time, comprehensive battery state information is provided, various information of the battery can be monitored and managed in real time, and the operation is convenient. By arranging the quick charge control device and the overcharge protection device, the battery has the functions of quick charge protection, overcharge protection and short-circuit protection, and the safety of the battery in the using process is enhanced. And the early warning module and the thermal runaway prediction module are arranged, so that early warning can be given out in time, and safety accidents are prevented.

Description

Technical Field

[0001] The present application relates to the field of battery safety warning, and in particular to an intelligent warning system and method for a lithium battery PACK package. Background Art

[0002] As an efficient energy storage device, lithium batteries are widely used in various electronic devices and electric vehicles due to their high energy density and long life. However, existing lithium batteries have significant safety hazards during use. For example, in the case of overcharging, overdischarging, short circuit, etc., lithium batteries may experience thermal runaway, leading to fire or explosion. This is mainly due to the lack of early warning prompts and control of their ambient temperature, resulting in frequent fire accidents caused by excessive temperature. Therefore, the development of an intelligent system that can quickly monitor and warn of thermal runaway is of great significance to improving the safety of lithium batteries.

[0003] Although many lithium battery intelligent monitoring and management systems have been studied to solve the above problems, these lithium battery intelligent monitoring and management systems still have the following problems:

[0004] (1) It is impossible to monitor the temperature and thermal radiation of the battery in real time, resulting in the inability to detect and deal with overheating problems in a timely manner.

[0005] (2) Lithium batteries cannot dissipate heat well and lack effective water cooling devices, which may affect battery performance and life.

[0006] (3) The inability to monitor current, voltage, number of cycles, and battery capacity in real time limits the comprehensive understanding and management of battery status.

[0007] (4) The battery cannot be protected from fast charging, overcharging and short circuit, posing a safety hazard. Summary of the invention

[0008] In order to solve the above problems, the present application provides a lithium battery PACK intelligent early warning system and method.

[0009] To achieve the above objectives, this application provides the following solutions:

[0010] In the first aspect, the present application provides a lithium battery PACK intelligent early warning system, including: a central processing unit, a water cooling circulation device, an air cooling device, a temperature sensor module, a thermal runaway prediction module, an early warning module, a communication module, a voltage sensor module, a current sensor module, an external device, a fast charging control device, a temperature control module, a current control module, a voltage control module and an overcharging protection device;

[0011] The water cooling circulation device, the air cooling device, the thermal runaway prediction module, the early warning module, the communication module, the voltage sensor module, the current sensor module, the fast charging control device, the temperature control module, the current control module, the voltage control module and the overcharging protection device are all connected to the central processing unit; the temperature sensor module is connected to the thermal runaway prediction module; the external device communicates with the central processing unit through the communication module;

[0012] The thermal runaway prediction module is used to obtain a thermal runaway prediction result based on the temperature data acquired by the temperature sensor module;

[0013] The central processing unit is used to generate control information based on the thermal runaway prediction result, the voltage data obtained by the voltage sensor module, and the current data obtained by the current sensor module;

[0014] The fast charging control device, the temperature control module, the current control module and the voltage control module are used to respectively realize fast charging control, temperature control, current control and voltage control based on the control information; the water cooling circulation device, the air cooling device and the overcharging protection device perform water cooling circulation, air cooling control and overcharging protection based on the control information; the early warning module is used to generate an early warning signal based on the control information.

[0015] Optionally, the external device includes: an intelligent terminal, a temperature display module, a battery maximum capacity display module, a power signal acquisition and display module, a current display module, a voltage display module and an early warning information display module; the temperature display module, the battery maximum capacity display module, the power signal acquisition and display module, the current display module, the voltage display module and the early warning information display module are all connected to the intelligent terminal and the central processing unit; the intelligent terminal communicates wirelessly with the central processing unit through a communication module.

[0016] Optionally, the smart terminal is one or more of a computer, a smart phone, and a smart bracelet.

[0017] Optionally, the water cooling circulation device includes a condenser; the condenser is arranged on the inner shell of the lithium battery.

[0018] Optionally, the air cooling device includes a plurality of cooling fans; the cooling fans are circumferentially arranged on the lithium battery housing at set intervals.

[0019] Optionally, the temperature sensor module includes a plurality of temperature sensors; each battery cell in the lithium battery is provided with a temperature sensor for acquiring the temperature of each battery cell.

[0020] Optionally, the early warning module includes an indicator light and a buzzer;

[0021] Each battery cell in the lithium battery is provided with at least one indicator light; the buzzer and the indicator light are both connected to the central processing unit.

[0022] Optionally, the voltage sensor module includes a plurality of voltage sensors; each battery cell in the lithium battery is provided with a voltage sensor for acquiring the voltage of each battery cell.

[0023] Optionally, the current sensor module includes a plurality of current sensors; each battery cell in the lithium battery is provided with a current sensor for acquiring the current of each battery cell.

[0024] In a second aspect, the present application provides a lithium battery PACK intelligent early warning method, which is applied to the lithium battery PACK intelligent early warning system provided above; the lithium battery PACK intelligent early warning method comprises:

[0025] Obtain temperature data, voltage data and current data of lithium batteries;

[0026] Based on the temperature data, a thermal runaway prediction result is obtained;

[0027] generating control information based on the thermal runaway prediction result, the voltage data, and the current data;

[0028] Based on the control information, a warning signal is generated, and fast charging control, temperature control, current control, voltage control, temperature control and overcharge protection of the lithium battery are realized; the temperature control is realized based on a water cooling cycle and an air cooling cycle.

[0029] According to the specific embodiments provided in this application, this application has the following technical effects:

[0030] The present application provides a lithium battery PACK intelligent early warning system and method. By setting a temperature sensor module and a thermal runaway prediction module, the temperature and thermal radiation of the battery can be monitored in real time to ensure that the battery temperature is within a reasonable range. By setting a water cooling circulation device and an air cooling device, the lithium battery can be effectively dissipated, the battery temperature can be greatly reduced, and the potential safety hazards during the use of the lithium battery can be reduced. By setting an external device, the current, voltage, number of cycles and battery capacity can be monitored in real time to provide comprehensive battery status information. By setting a fast charging control device and an overcharging protection device, the system has fast charging protection, overcharging protection and short circuit protection functions, which enhances the safety of the battery during use. By setting an external device and a communication module, it can support the use with professional software to realize real-time monitoring and management of various battery information, and the operation is convenient. By setting an early warning module and a thermal runaway prediction module, an early warning can be issued in time to prevent the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A structural framework of a lithium battery PACK intelligent early warning system provided in one embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a lithium battery PACK intelligent early warning system provided in one embodiment of the present application;

[0034] Figure 3 A schematic diagram of the lithium battery arrangement provided in one embodiment of the present application;

[0035] Figure 4 This is a flow chart of a lithium battery PACK intelligent early warning method provided in one embodiment of the present application.

[0036] Reference numerals:

[0037] ①Intelligent terminal, ②Temperature display module, ③Battery maximum capacity display module, ④Communication module, ⑤Temperature control module, ⑥Cooling fan, ⑦Condenser, ⑧Water cooling circulation device, ⑨Voltage control module, ⑩Quick charge control device, Overcharge protection device, Smart switch, The outermost protective shell, Current control module, CPU, Electricity signal acquisition and display module, Current display module, Voltage display module, Lithium battery, 1 current sensor, 2 indicator light, 3 temperature sensor, 4 voltage sensor, 5 battery cell, 6 fireproof polymer, 7 explosion-proof layer. DETAILED DESCRIPTION

[0038] 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.

[0039] The present application provides a lithium battery PACK intelligent early warning system and method, which can monitor the temperature changes of lithium batteries in real time, aiming to quickly and accurately monitor the thermal runaway risks of lithium batteries, and can issue early warnings in time before signs of thermal runaway are detected to prevent the occurrence of safety accidents.

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] In an exemplary embodiment, the present application provides a lithium battery PACK intelligent early warning system, such as Figure 1 and Figure 2 As shown, the system includes: a central processing unit Water cooling circulation device⑧, air cooling device, temperature sensor module, thermal runaway prediction module, early warning module, communication module④, voltage sensor module, current sensor module, external equipment, fast charging control device⑩, temperature control module⑤, current control module Voltage control module ⑨ and overcharge protection device Except for external devices, other components can be equipped with an outermost protective shell In addition, it can also include a data processing module to perform preliminary processing on the received data and then send it to the central processing unit.

[0042] Water cooling circulation device⑧, air cooling device, thermal runaway prediction module, early warning module, communication module④, voltage sensor module, current sensor module, fast charging control device⑩, temperature control module⑤, current control module , voltage control module ⑨ and overcharge protection device CPU The temperature sensor module is connected to the thermal runaway prediction module. The external device is connected to the central processor through the communication module④. The temperature sensor module can be placed in the lithium battery Internal or external, responsible for real-time collection of lithium batteries The temperature data can be collected and the accuracy and timeliness of the data can be ensured through high-precision temperature sensing technology. The communication module ④ can transmit the warning information to external devices such as the user terminal or the background monitoring system to ensure the accurate transmission of information and the stable operation of the system.

[0043] The thermal runaway prediction module is used to obtain the thermal runaway prediction result based on the temperature data obtained by the temperature sensor module. The thermal runaway prediction module uses advanced algorithms to predict the thermal runaway of lithium batteries based on the preset thermal runaway model and the real-time collected temperature data. This module is the core of the system provided by this application and can detect potential safety risks in advance.

[0044] CPU It is used to generate control information based on the thermal runaway prediction result, the voltage data obtained by the voltage sensor module, and the current data obtained by the current sensor module. Connect and receive data from the temperature sensor module, and perform preliminary processing and analysis. It can identify the temperature change trend and provide basic data support for subsequent thermal runaway prediction.

[0045] Fast charging control device ⑩, temperature control module ⑤, current control module The voltage control module ⑨ is used to realize fast charge control, temperature control, current control and voltage control respectively based on the control information. Water cooling circulation device ⑧, air cooling device and overcharge protection device Water cooling circulation, air cooling control and overcharge protection are performed based on control information. The early warning module is used to generate early warning signals based on control information. When the thermal runaway prediction module determines that there is a risk of thermal runaway, the early warning module will immediately trigger the early warning signal. The early warning method can include sound alarms, light signals or notifications sent through mobile applications to ensure that users can take timely measures.

[0046] Furthermore, in order to achieve more flexible data transmission and device connection, Bluetooth function can be integrated into the system provided in the present application, which enables users to quickly pair and interact with the system at a close distance, allowing users to view and manage the battery status through smartphones or other devices at any location, further improving the user experience.

[0047] In another exemplary embodiment of the present application, the external device includes: a smart terminal ①, a temperature display module ②, a battery maximum capacity display module ③, a power signal acquisition and display module , Current display module , voltage display module And early warning information display module. Temperature display module②, battery maximum capacity display module③, power signal acquisition and display module , Current display module , voltage display module And the warning information display module is connected to the intelligent terminal① and the central processor The intelligent terminal ① communicates with the central processor through the communication module ④ Wireless communication.

[0048] Among them, the smart terminal ① is one or more of a computer, a smart phone, a smart bracelet, but is not limited to these.

[0049] In another exemplary embodiment of the present application, the water cooling circulation device ⑧ includes a condenser ⑦. Figure 2 As shown, the condenser ⑦ is set on the lithium battery The air cooling device includes a plurality of cooling fans ⑥. The cooling fans ⑥ are arranged around the lithium battery at a set interval. On the shell.

[0050] In another exemplary embodiment of the present application, the temperature sensor module includes a plurality of temperature sensors 3. Figure 3 As shown, lithium battery A temperature sensor 3 is disposed on each battery cell 5 to obtain the temperature of each battery cell 5 .

[0051] In another exemplary embodiment of the present application, the warning module includes an indicator light 2 and a buzzer. Figure 3 As shown, lithium battery Each battery cell 5 is provided with at least one indicator light 2. The buzzer and the indicator light 2 are connected to the central processor. connect.

[0052] In another exemplary embodiment of the present application, the voltage sensor module includes a plurality of voltage sensors. Figure 3 As shown, lithium battery A voltage sensor is disposed on each battery cell 5 to obtain the voltage of each battery cell 5 .

[0053] The current sensor module includes a plurality of current sensors 1. Lithium battery A current sensor 1 is disposed on each battery cell 5 to obtain the current of each battery cell 5 .

[0054] Based on the above, in order to improve the operating performance of the entire system during actual application, the battery cell 5 can be designed with multiple safety measures to ensure its stability and safety during use. Figure 3 As shown, the interior of the battery cells 5 is filled with fireproof polymer 6, which can effectively prevent the spread of fire when an abnormality occurs in the battery, thereby protecting the battery from damage. In addition, a current sensor 1, a voltage sensor 4 and a temperature sensor 3 are arranged in the outer shell of each battery cell 5. These sensors can monitor the temperature, current and voltage of the battery in real time to ensure that the working state of the battery cell 5 is always within a safe range. In order to facilitate users and maintenance personnel to quickly judge the working state of the battery cell 5, each battery cell 5 is equipped with an indicator light 2. For example, when the battery cell 5 is working normally, the indicator light 2 displays green; once the battery cell 5 fails, the indicator light 2 turns red to facilitate maintenance management. An explosion-proof layer is set on the outermost layer of the battery cell 5. The design of the explosion-proof layer can avoid damage to the surrounding lithium batteries when the battery cell 5 is damaged. A certain number of battery cells 5 are connected in series and parallel to form a lithium battery. This design not only improves the overall performance of the battery pack, but also makes the battery pack more flexible and reliable in application.

[0055] Further, based on the above description, the normal working process of the system provided by this application is: start the computer and supporting software, and turn on the lithium battery The current, voltage and temperature sensors 3 built into the battery cells 5 collect data in real time and transmit this information to their respective control modules. These control modules then aggregate the data to the central processor inside the battery pack. The data analyzed by the CPU will be displayed in real time on the connected display module and computer, allowing users to monitor the battery current, voltage, capacity and temperature status at any time.

[0056] In addition, lithium batteries By equipping with Bluetooth communication equipment, the monitoring data can be wirelessly transmitted to the smart terminal① (such as a smartphone) application, and the user can check the real-time status of the battery online anytime and anywhere.

[0057] During battery operation, the air cooling device will continue to operate to dissipate heat to ensure that the temperature is within a safe range. When the detected temperature reaches the preset threshold, the advanced water cooling circulation device⑧ will automatically start to further reduce the battery temperature and effectively prevent overheating. When a battery pack fails, the intelligent switch can directly cut off the power supply to prevent the failure from expanding or causing further damage to the battery. This series of intelligent designs not only improves the safety of battery use, but also greatly facilitates users to monitor and manage battery status.

[0058] The fast charging control device ⑩ can realize the fast charging of the lithium battery pack, and the overcharge protection device can prevent the battery from being affected by long-term charging. Since the battery cells are equipped with explosion-proof shells and fire-proof polymers, if one battery cell fails, it will not damage the adjacent battery cells. The safety of lithium batteries is improved.

[0059] Based on the above description, the present application can ensure a comprehensive understanding of the battery status by monitoring the temperature, voltage, current and other parameters of the battery in real time. Further, through intelligent analysis of the monitoring data, any potential risk factors that may cause thermal runaway can be discovered in time. Then, the potential risk of thermal runaway can be discovered in time. Once an abnormal situation is detected, the early warning mechanism will be immediately activated to remind the user to take corresponding measures through sound, light signals or mobile application notifications. In addition, it can also be integrated with the battery management system (BMS) to achieve automatic adjustment of the battery working state to avoid overheating and other unsafe conditions. In this way, the safety risks of lithium batteries during use can be greatly reduced, and their reliability and service life can be improved. Finally, the present application can also generate detailed data analysis reports to help users better understand battery performance trends and provide a basis for maintenance decisions. And on each display module, the system can provide an intuitive and easy-to-use user interface, so that non-professionals can also easily understand and operate, enhancing the user experience.

[0060] Furthermore, compared with the prior art, the system provided by the present application also has the following advantages:

[0061] 1) Fault isolation: Each battery cell is equipped with an independent protection mechanism. If one battery cell fails, it will not damage the adjacent battery cells, thus improving the overall safety and reliability of the lithium battery.

[0062] 2) Real-time monitoring by smart terminals: The key parameters of lithium batteries, such as voltage, current, temperature and capacity, can be monitored in real time by smart terminals. This remote monitoring function not only allows users to understand the battery status at any time, but also allows users to take timely measures when abnormal situations occur to avoid potential risks.

[0063] 3) Fast charging and overcharge protection: This application supports fast charging technology. At the same time, the built-in overcharge protection device can prevent the battery from being damaged due to long-term charging and extend the battery life.

[0064] 4) Highly efficient heat dissipation: The heat dissipation mechanism using a combination of mechanical refrigeration and water cooling circulation device can significantly reduce the battery temperature. When the temperature reaches the preset threshold, the water cooling circulation device will automatically start to ensure that the battery operates within a safe temperature range, effectively preventing overheating problems.

[0065] 5) Intelligent management: Through wireless communication technologies such as Bluetooth, this application realizes intelligent management of lithium batteries. Users can not only remotely monitor the battery status, but also receive system warning information and maintenance suggestions.

[0066] In addition, if Figure 2 As shown, the system provided by the present application may also be provided with an intelligent switch When the current in the circuit is too large, the intelligent switch The power supply can be cut off to prevent further damage to the battery.

[0067] Based on the same inventive concept, the embodiment of the present application also provides a lithium battery PACK intelligent warning method for realizing the lithium battery PACK intelligent warning system involved above. The implementation scheme for solving the problem provided by the method is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more lithium battery PACK intelligent warning method embodiments provided below can refer to the limitations of the lithium battery PACK intelligent warning system above, and will not be repeated here.

[0068] In an exemplary embodiment, Figure 4 As shown, the present application provides a lithium battery PACK intelligent early warning method, comprising:

[0069] Step 100: Acquire temperature data, voltage data, and current data of the lithium battery.

[0070] Step 101: Obtain a thermal runaway prediction result based on temperature data.

[0071] Step 102: Generate control information based on the thermal runaway prediction result, voltage data, and current data.

[0072] Step 103: Generate an early warning signal based on the control information, and implement fast charge control, temperature control, current control, voltage control, temperature control and overcharge protection of the lithium battery. The temperature control is implemented based on water cooling cycle and air cooling cycle.

[0073] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A lithium battery PACK intelligent early warning system, characterized in that: The lithium battery PACK intelligent early warning system includes: a central processing unit, a water cooling circulation device, an air cooling device, a temperature sensor module, a thermal runaway prediction module, an early warning module, a communication module, a voltage sensor module, a current sensor module, an external device, a fast charging control device, a temperature control module, a current control module, a voltage control module and an overcharging protection device; The water cooling circulation device, the air cooling device, the thermal runaway prediction module, the early warning module, the communication module, the voltage sensor module, the current sensor module, the fast charging control device, the temperature control module, the current control module, the voltage control module and the overcharging protection device are all connected to the central processing unit; the temperature sensor module is connected to the thermal runaway prediction module; the external device communicates with the central processing unit through the communication module; The thermal runaway prediction module is used to obtain a thermal runaway prediction result based on the temperature data acquired by the temperature sensor module; The central processing unit is used to generate control information based on the thermal runaway prediction result, the voltage data obtained by the voltage sensor module, and the current data obtained by the current sensor module; The fast charging control device, the temperature control module, the current control module and the voltage control module are used to respectively realize fast charging control, temperature control, current control and voltage control based on the control information; the water cooling circulation device, the air cooling device and the overcharging protection device perform water cooling circulation, air cooling control and overcharging protection based on the control information; the early warning module is used to generate an early warning signal based on the control information.

2. The lithium battery PACK intelligent early warning system according to claim 1 is characterized in that: The external device includes: an intelligent terminal, a temperature display module, a battery maximum capacity display module, a power signal acquisition and display module, a current display module, a voltage display module and an early warning information display module; the temperature display module, the battery maximum capacity display module, the power signal acquisition and display module, the current display module, the voltage display module and the early warning information display module are all connected to the intelligent terminal and the central processing unit; the intelligent terminal communicates wirelessly with the central processing unit through a communication module.

3. The lithium battery PACK intelligent early warning system according to claim 2 is characterized in that: The smart terminal is one or more of a computer, a smart phone, and a smart bracelet.

4. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The water cooling circulation device comprises a condenser; the condenser is arranged on the inner shell of the lithium battery.

5. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The air cooling device includes a plurality of heat dissipation fans; the heat dissipation fans are circumferentially arranged on the lithium battery housing at a set interval.

6. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The temperature sensor module includes a plurality of temperature sensors; each battery cell in the lithium battery is provided with a temperature sensor for obtaining the temperature of each battery cell.

7. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The early warning module includes an indicator light and a buzzer; Each battery cell in the lithium battery is provided with at least one indicator light; the buzzer and the indicator light are both connected to the central processing unit.

8. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The voltage sensor module includes a plurality of voltage sensors; each battery cell in the lithium battery is provided with a voltage sensor for obtaining the voltage of each battery cell.

9. The lithium battery PACK intelligent early warning system according to claim 1, characterized in that: The current sensor module includes a plurality of current sensors; each battery cell in the lithium battery is provided with a current sensor for obtaining the current of each battery cell.

10. A lithium battery PACK intelligent early warning method, characterized in that: The lithium battery PACK intelligent early warning method is applied to the lithium battery PACK intelligent early warning system as described in any one of claims 1 to 9; The lithium battery PACK intelligent early warning method comprises: Obtain temperature data, voltage data and current data of lithium batteries; Based on the temperature data, a thermal runaway prediction result is obtained; generating control information based on the thermal runaway prediction result, the voltage data, and the current data; Based on the control information, a warning signal is generated, and fast charging control, temperature control, current control, voltage control, temperature control and overcharge protection of the lithium battery are realized; the temperature control is realized based on a water cooling cycle and an air cooling cycle.

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