Out-of-control monitoring system of integrated battery cell, battery equipment, method and computer equipment

Abstract

The invention relates to the technical field of battery monitoring, and discloses an out-of-control monitoring system for integrated battery cells, battery equipment, a method and computer equipment, and in the system, each battery cell acquisition control unit is correspondingly connected with a preset number of battery cells in a battery pack and a main controller; each thermal runaway monitoring point is correspondingly connected with each battery cell in the battery pack; when the battery pack works, each battery cell collection control unit collects attribute parameters of the corresponding connected battery cell and attribute parameters of each thermal runaway monitoring point and transmits the attribute parameters to the main controller, and the main controller judges whether thermal runaway happens to the corresponding battery cell or not based on the attribute parameters of the battery cell and the attribute parameters of each thermal runaway monitoring point. And when thermal runaway of the battery cells occurs, the battery cell acquisition control units correspondingly connected with the battery cells bypass the thermal runaway battery cells. According to the invention, the purposes of predicting and monitoring the thermal runaway of the battery cell and processing the fault battery cell in time when the thermal runaway occurs are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of battery monitoring, and in particular to an out-of-control monitoring system, battery equipment, method and computer equipment for integrated battery cells. Background Art

[0002] With the development of new energy vehicles and the strong support of relevant departments for this industry, various types of electric vehicles will gradually replace traditional fuel vehicles. Lithium batteries are widely used in automotive power battery packs due to their advantages such as high power and energy density and long life. The most dangerous situation of lithium batteries is thermal runaway, which will release a large amount of toxic and high-temperature gases and generate a large amount of heat to be transferred to adjacent cells, thereby causing thermal runaway of other cells, and ultimately leading to thermal runaway of the entire battery pack, fire, explosion, and endangering human safety.

[0003] Battery thermal runaway refers to a situation where the internal temperature of a battery rises sharply under certain conditions, causing the battery to enter an uncontrollable state. In severe cases, it may cause the battery to spontaneously combust or even explode. This phenomenon is usually caused by the following key factors: overheating, overcharging, internal short circuit and collision, etc. The cause of thermal runaway, related reactions inside the battery and the process flow of thermal runaway are shown in the figure below. Figure 1 shown.

[0004] Therefore, it is very necessary to monitor and prevent thermal runaway of battery cells. Currently, it is impossible to monitor and prevent thermal runaway of battery cells. In order to avoid the problem of thermal runaway of batteries, a runaway monitoring system for battery cells is urgently needed. Summary of the invention

[0005] In view of this, the present invention provides an integrated battery cell runaway monitoring system, battery equipment, method and computer equipment to solve the problem of being unable to monitor and prevent thermal runaway of battery cells.

[0006] In a first aspect, the present invention provides an integrated battery cell out-of-control monitoring system, the system comprising: a plurality of battery cell acquisition control units connected in series, a battery pack formed by a plurality of battery cells connected in series, and a main controller; each battery cell acquisition control unit is provided with a thermal runaway monitoring point having the same number as the battery cells in the battery pack;

[0007] Each battery cell acquisition control unit is connected to a preset number of battery cells in the battery pack and the main controller; each thermal runaway monitoring point is connected to each battery cell in the battery pack;

[0008] When a battery pack formed by multiple battery cells connected in series is working, each battery cell data collection and control unit collects the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller. The main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point. When thermal runaway occurs in a battery cell, the battery cell data collection and control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

[0009] The present invention provides an integrated battery cell out-of-control monitoring system. When the battery pack is working, each battery cell acquisition control unit acquires the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller. The main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of the explosion-proof valve in the battery cell. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell, thereby realizing the purpose of thermal runaway prediction and monitoring of the battery cell and timely processing of the faulty battery cell when thermal runaway occurs, and solving the problem that the thermal runaway phenomenon of the battery cell cannot be monitored and prevented.

[0010] In an optional embodiment, each battery cell acquisition control unit further includes a MOS drive switch, a voltage monitoring element, a temperature monitoring element, a thermal runaway monitoring element and a microcontroller; the attribute parameters of the battery cell include the battery cell voltage and the battery cell temperature; the attribute parameters of the thermal runaway monitoring point include the temperature and humidity of each thermal runaway monitoring point;

[0011] The MOS drive switch, the voltage monitoring element, the temperature monitoring element, and the thermal runaway monitoring element are all connected to the microcontroller;

[0012] The MOS drive switch is used to control the opening and closing of the battery cell; the voltage monitoring element is used to collect the battery cell voltage of the corresponding battery cell, and the temperature monitoring element is used to collect the battery cell temperature of the corresponding battery cell; the thermal runaway monitoring element is used to collect the temperature and humidity of each thermal runaway monitoring point;

[0013] The microcontroller is used to control the switching operation of the MOS drive switch according to the control instruction of the main controller and control the voltage monitoring element, the temperature monitoring element and the thermal runaway monitoring element to perform acquisition operations.

[0014] In an optional implementation, each thermal runaway monitoring point is connected to an explosion-proof valve in a corresponding battery cell, and the temperature and humidity of each thermal runaway monitoring point are respectively the valve port temperature and valve port humidity of the explosion-proof valve;

[0015] The thermal runaway monitoring element is also used to collect the valve port temperature and valve port humidity of the explosion-proof valve in the corresponding battery cell.

[0016] The present invention provides an integrated battery cell out-of-control monitoring system, which adopts an integrated battery cell proximal multi-dimensional data collection solution. The data collection management method reduces the complexity of the intermediate flying wire connection process, thereby improving reliability. It can also predict the risk of battery cell failure in advance, reducing the failure probability and actual loss.

[0017] In an optional implementation, each battery cell acquisition control unit further includes a voltage regulating circuit, which is connected to each battery cell in the battery pack, and is used to adjust the input voltage of each battery cell.

[0018] In an optional implementation, each battery cell acquisition control unit further includes an isolation communication module, which is respectively connected to the microcontroller and the main controller, and is used for communication between the microcontroller and the main controller.

[0019] In an optional implementation, the main controller includes a comparator and an interrupt control chip; the interrupt control chip includes an input and output interface and a signal generator control CU;

[0020] The comparator is used to receive the attribute parameters of each battery cell and the attribute parameters of each thermal runaway monitoring point, and compare the attribute parameters of each battery cell and the attribute parameters of the thermal runaway monitoring point with the corresponding battery cell attribute parameter threshold and the corresponding thermal runaway monitoring point attribute parameter threshold, respectively, to determine whether the corresponding battery cell has thermal runaway;

[0021] The main controller is connected to the microcontroller via an input and output interface, and the signal generator control CU is used to send control instructions to the microcontroller.

[0022] In an optional implementation, when thermal runaway occurs, the signal generator controls the CU to send a control instruction to the microcontroller, and the microcontroller controls the MOS drive switch to bypass the corresponding thermal runaway battery cell.

[0023] The present invention provides an integrated battery cell out-of-control monitoring system, which achieves the purpose of point-to-point battery cell control through the internal structure of the battery cell collection and control unit, timely adjusts the single cell energy flow strategy, optimizes the single cell energy shortcomings, and eliminates the failure risk source.

[0024] In a second aspect, the present invention provides a battery device, the device comprising: the integrated battery cell out-of-control monitoring system and the battery cell spine according to the first aspect or any corresponding embodiment thereof;

[0025] Each cell collection and control unit in the energy management system of the integrated cell is respectively connected to a preset number of cells in the battery pack and the main controller to form a single monitoring module, and multiple single monitoring modules are packaged through the cell spine to form a battery device.

[0026] In a third aspect, the present invention provides a method for monitoring an out-of-control integrated cell, which is applied to the out-of-control integrated cell monitoring system of the first aspect or any corresponding embodiment thereof, and the method comprises:

[0027] When a battery pack formed by multiple cells connected in series is working, each cell acquisition control unit is used to collect the attribute parameters of the corresponding connected cell and the attribute parameters of each thermal runaway monitoring point;

[0028] Based on the attribute parameters of the battery cell and the attribute parameters of each thermal runaway monitoring point, it is determined whether the corresponding battery cell has thermal runaway. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

[0029] In a fourth aspect, the present invention provides a computer device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the integrated battery cell out-of-control monitoring method of the third aspect above by executing the computer instructions.

[0030] In a fifth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the integrated battery cell out-of-control monitoring method of the third aspect.

[0031] In a sixth aspect, the present invention provides a computer program product, comprising computer instructions, wherein the computer instructions are used to enable a computer to execute the integrated battery cell out-of-control monitoring method of the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 Schematic diagram of the cause of thermal runaway of the battery cell, the reaction inside the battery, and the battery status after thermal runaway occurs;

[0034] Figure 2 is a schematic structural diagram of an integrated battery cell out-of-control monitoring system according to an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of another integrated battery cell out-of-control monitoring system according to an embodiment of the present invention;

[0036] Figure 4is a schematic diagram of the structure of each battery cell acquisition control unit according to an embodiment of the present invention;

[0037] Figure 5 is a schematic diagram of the distribution of thermal runaway monitoring points on each battery cell acquisition control unit according to an embodiment of the present invention;

[0038] Figure 6 is a schematic structural diagram of a battery device according to an embodiment of the present invention;

[0039] Figure 7 It is a schematic diagram of the process of starting, communicating and self-checking of the out-of-control monitoring system of the integrated battery cell according to an embodiment of the present invention;

[0040] Figure 8 It is a schematic diagram of the process of monitoring the state of a battery cell by the out-of-control monitoring system of the integrated battery cell according to an embodiment of the present invention;

[0041] Fig. 9 It is a schematic diagram of the operation flow of the out-of-control monitoring system for integrated battery cells according to an embodiment of the present invention.

[0042] Fig.10 It is a flow chart of a method for monitoring an out-of-control integrated battery cell according to an embodiment of the present invention.

[0043] Fig.11 It is a schematic diagram of the hardware structure of a computer device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] In this embodiment, a runaway monitoring system for an integrated battery cell is provided. Figure 2 is a structural diagram of an out-of-control monitoring system for an integrated battery cell according to an embodiment of the present invention, such as Figure 2 As shown, the system includes: a plurality of battery cell acquisition control units connected in series, a battery pack formed by a plurality of battery cells connected in series, and a main controller; each battery cell acquisition control unit is provided with thermal runaway monitoring points having the same number as the battery cells in the battery pack; each battery cell acquisition control unit is respectively connected to a preset number of battery cells in the battery pack and the main controller; each thermal runaway monitoring point is connected to each battery cell in the battery pack.

[0049] When the battery pack is working, each battery cell data collection and control unit collects the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller. The main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point. When thermal runaway occurs in the battery cell, the battery cell data collection and control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

[0050] Among them, the preset number is set according to the actual situation and is not specifically limited here. The attribute parameters of the battery cell may include parameters such as battery cell voltage, battery cell temperature and battery cell internal resistance. The attribute parameters of each thermal runaway monitoring point can be parameters such as temperature and humidity at the valve port of the battery explosion-proof valve. When a battery cell has thermal runaway, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell, which means cutting off the current of the battery cell that has thermal runaway.

[0051] The flow chart of the integrated battery cell out-of-control monitoring system startup, communication and self-test is as follows: Figure 7As shown, the entire system is in a dormant state before startup, and is awakened through the communication bus of the main controller, and determines whether the waiting for the local instruction has timed out. When the instruction has not timed out, it continues to determine whether the instruction is valid (determine whether the instruction meets the communication protocol standard, that is, communication verification). When the instruction is valid, according to the data collection requirements in the instruction, each battery cell acquisition control unit is controlled to collect the attribute parameters of the corresponding connected battery cell and the attribute parameters of each thermal runaway monitoring point and transmit them to the main controller, and reply the acquisition action completion operation to the main controller to confirm whether the main controller has received the above-collected attribute parameters. When the main controller receives it, each battery cell acquisition control unit is required to wait for the control instruction of the main controller. When the instruction times out, the entire integrated battery cell out-of-control monitoring system continues to be in a dormant state. When the instruction is invalid, the information that the instruction is invalid is replied to the main controller.

[0052] The integrated battery cell out-of-control monitoring system provided in the present embodiment has the following characteristics: when the battery pack is working, each battery cell acquisition control unit acquires the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller; the main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of the explosion-proof valve in the battery cell; when thermal runaway occurs in the battery cell, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell, thereby achieving the purpose of thermal runaway prediction and monitoring of the battery cell and timely processing of the faulty battery cell when thermal runaway occurs, thereby solving the problem of being unable to monitor and prevent thermal runaway of the battery cell.

[0053] like Figure 4 As shown, each battery cell acquisition control unit also includes a MOS drive switch, a voltage monitoring element, a temperature monitoring element, a thermal runaway monitoring element and a microcontroller (Microcontroller Unit, MCU); the attribute parameters of the battery cell include the battery cell voltage and the battery cell temperature; the attribute parameters of the thermal runaway monitoring point include the temperature and humidity of each thermal runaway monitoring point; the MOS drive switch, the voltage monitoring element, the temperature monitoring element and the thermal runaway monitoring element are all connected to the microcontroller; the MOS drive switch is used to control the opening and closing of the battery cell; the voltage monitoring element is used to collect the battery cell voltage of the corresponding battery cell, and the temperature monitoring element is used to collect the battery cell temperature of the corresponding battery cell; the thermal runaway monitoring element is used to collect the temperature and humidity of each thermal runaway monitoring point; the microcontroller is used to control the switching operation of the MOS drive switch according to the control instructions of the main controller, and control the voltage monitoring element, the temperature monitoring element and the thermal runaway monitoring element to perform acquisition operations.

[0054] In an optional embodiment, if Figure 3 As shown, in this embodiment, the preset number is set to 2, and a battery pack formed by multiple cells connected in series is represented by PACK, and each cell acquisition control unit is connected to two cells correspondingly, such as Figure 5As shown, each thermal runaway monitoring point is connected to each battery cell in the battery pack. When the battery pack PACK is working, each battery cell acquisition control unit acquires the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller. The main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the battery cell will bypass the thermal runaway battery cell. Among them, each thermal runaway monitoring point is connected to the explosion-proof valve in the corresponding battery cell, and the temperature and humidity of each thermal runaway monitoring point are the valve port temperature and valve port humidity of the explosion-proof valve respectively. The thermal runaway monitoring element is used to acquire the valve port temperature and valve port humidity of the explosion-proof valve in the corresponding battery cell.

[0055] In an optional embodiment, if Figure 4 As shown, each battery cell acquisition control unit also includes a voltage regulating circuit, which is connected to each battery cell in the battery pack, and is used to adjust the input voltage of each battery cell.

[0056] The voltage regulating circuit can convert the input AC voltage into a stable DC voltage output, thereby providing a stable power supply for the battery cell. It can also filter and protect the input voltage to prevent excessively high or low voltage from damaging the battery cell.

[0057] In an optional embodiment, if Figure 4 As shown, each battery cell acquisition control unit also includes an isolation communication module, which is connected to the microcontroller and the main controller respectively, and is used for communication between the microcontroller and the main controller.

[0058] In an optional embodiment, the main controller includes a comparator and an interrupt control chip; the interrupt control chip includes an input and output interface and a signal generator control CU; the comparator is used to receive the attribute parameters of each battery cell and the attribute parameters of each thermal runaway monitoring point, and compare the attribute parameters of each battery cell and the attribute parameters of the thermal runaway monitoring point with the corresponding battery cell attribute parameter threshold and the corresponding thermal runaway monitoring point attribute parameter threshold, respectively, to determine whether thermal runaway occurs in the corresponding battery cell; the main controller is connected to the microcontroller through the input and output interface, and the signal generator control CU is used to send control instructions to the microcontroller.

[0059] Specifically, the signal generator controls the CU (Control Unit) to command the execution of the microcontroller hardware by generating various micro-operation control signals, including the following main parts:

[0060] Control Unit (CU): This is the core part of the controller, responsible for analyzing instructions and issuing control signals.

[0061] Instruction Register (IR): stores the currently executed instruction.

[0062] Program Counter (PC): Stores the address of the next instruction and has the function of automatically adding 1.

[0063] Instruction decoder (ID): decodes instructions.

[0064] Timing system: provides control timing.

[0065] Micro-operation signal generator: generates various micro-operation control signals. These signals are formed by the decoding signal provided by the instruction decoder (ID), the timing signal provided by the timing system, and the status and conditions fed back by the controlled functional components (i.e., battery cells).

[0066] For the specific control process, please refer to the relevant technical implementation, which will not be repeated here.

[0067] It should be noted that in addition to realizing the control function by hardware circuit, the control function of the main controller can also be realized by using a control algorithm to send control instructions to the microprocessor so that the microcontroller controls the switching operation of the MOS drive switch and controls the voltage monitoring element, temperature monitoring element and thermal runaway monitoring element to perform collection operations according to the control instructions of the main controller.

[0068] The cell attribute parameter thresholds include the cell voltage threshold and the cell temperature threshold, and the thermal runaway monitoring point attribute parameter thresholds include the valve port temperature threshold and the valve port humidity threshold of the explosion-proof valve. The setting of the above thresholds is related to the rated voltage of the cell. When the collected cell voltage is greater than the cell voltage threshold or the collected cell voltage is greater than the cell voltage threshold and the cell temperature is greater than the cell temperature threshold, it is determined that the cell has thermal runaway; or the valve port temperature of the explosion-proof valve is greater than the valve port temperature threshold of the explosion-proof valve and / or the valve port humidity of the explosion-proof valve is greater than the valve port humidity threshold, it is determined that the cell has thermal runaway.

[0069] When thermal runaway occurs, the signal generator controls the CU to send control instructions to the microcontroller, and the microcontroller controls the MOS drive switch to bypass the corresponding thermal runaway battery cell.

[0070] Taking the voltage acquisition control unit 1 as an example, when one of the battery cells connected to it experiences thermal runaway, the MOS drive switch is turned off, and the battery cell experiencing thermal runaway is bypassed to prevent affecting the normal operation of other battery cells.

[0071] Combination Figure 8 The process of monitoring the cell status of the out-of-control monitoring system of the integrated cell is described as follows:

[0072] Before startup, the out-of-control monitoring system of the integrated battery cell is in a dormant state and is awakened through the communication bus of the main controller. Each battery cell acquisition control unit is controlled to collect the attribute parameters of the battery cell and the attribute parameters of each thermal runaway monitoring point, and the database is verified to determine whether the data is N=N+1. When N=N+1 (the first test is an error, and the second test is an error; it means that the system is indeed in a thermal runaway state; emergency response is required to protect the battery, fire alarm; report to the host, maintenance personnel, etc.), the main controller outputs the judgment result, including: thermal runaway risk index, trigger event 1 / 2, trigger event 3 (trigger event refers to thermal runaway event). When N=2, a safe operation is performed, that is, the thermal runaway battery cell is bypassed through the MOS drive switch, so that the thermal runaway battery cell is disconnected from the entire battery cell string. The main controller also reports the execution result and the attribute parameter collection of the battery cell, the attribute parameters of each thermal runaway monitoring point, and the thermal runaway detection result, and outputs an error interrupt signal (leading to the main controller through the low-level signal output signal line to realize the interrupt function).

[0073] Life test is performed for each battery cell, including: 1. A large number of battery cell cycle test data, including: resistance, voltage corresponding lines. 2. Failure test, failure start process data. 3. Thermal runaway test, failure start process data. The test data is stored in the controller's MCU external device.

[0074] like Fig. 9 As shown, the main controller also determines the external load of the battery cells in the battery pack, whether there are external demand states such as overcurrent and overtemperature. The battery cell energy is obtained by calculating the battery cell charge, and safety management is performed to determine all battery cell data and detect error interrupt data, and determine whether the energy in all battery cell monomers exceeds the average value. If so, an energy balancing operation is performed, that is, the battery cells with energy values ​​exceeding the average value are discharged and bypassed, or the battery cells with energy values ​​below the average value are charged and bypassed, so that the battery cell energy is restored to balance.

[0075] The integrated cell out-of-control monitoring system provided in this embodiment achieves the purpose of point-to-point cell control through the internal structure of the cell data collection control unit, timely adjusts the single cell energy flow strategy, optimizes the single cell energy shortcomings, and eliminates the failure risk source.

[0076] In an optional embodiment, multiple battery cell collection control units connected in series and a battery pack formed by multiple battery cells connected in series are all independent structural settings, or multiple battery cell collection control units connected in series and a battery pack formed by multiple battery cells connected in series are integrated. Among them, the independent structure setting can be: multiple battery cell collection control units connected in series are set as separate modules, and the battery pack formed by multiple battery cells connected in series is set as a separate module, and then the two separate modules are electrically connected according to a set connection method. The integrated setting is: multiple battery cell collection control units connected in series and a battery pack formed by multiple battery cells connected in series are packaged into an integrated structure. Figure 5 As shown, each battery cell collection control unit connected in series and the corresponding battery cells are arranged in a circuit board manner, and then a plurality of such circuit boards are packaged to obtain an integrated structure.

[0077] The integrated battery cell out-of-control monitoring system provided in this embodiment can select a variety of setting structures to design multiple battery cell acquisition control units connected in series and the connection relationship between the battery packs formed by multiple battery cells connected in series, which has the advantages of flexible design and reliable performance.

[0078] In this embodiment, a battery device is also provided. Figure 6 As shown, including: Figure 2 and Figure 3 The integrated battery cell out-of-control monitoring system and battery cell spine shown in the figure, each battery cell collection and control unit in the energy management system of the integrated battery cell is respectively connected to a preset number of batteries in the battery pack and the main controller to form a single monitoring module, and multiple single monitoring modules are packaged through the battery cell spine to form a battery device.

[0079] In this embodiment, a method for monitoring the out-of-control of an integrated battery cell is also provided. Figure 2 and Figure 3 The integrated cell out-of-control monitoring system shown in FIG. Fig.10 As shown, the following steps are included:

[0080] Step S101, when a battery pack formed by connecting a plurality of battery cells in series is in operation, each of the battery cell acquisition control units is used to acquire property parameters of the corresponding connected battery cells and property parameters of each thermal runaway monitoring point.

[0081] Specifically, the integrated battery cell out-of-control monitoring system includes: a plurality of battery cell collection and control units connected in series, a battery pack formed by a plurality of battery cells connected in series, and a main controller; each of the battery cell collection and control units is provided with a thermal runaway monitoring point having the same number as the battery cells in the battery pack; each of the battery cell collection and control units is respectively connected to a preset number of battery cells in the battery pack and the main controller; each thermal runaway monitoring point is connected to each battery cell in the battery pack.

[0082] When a battery pack formed by a plurality of battery cells connected in series is working, each of the battery cell acquisition control units acquires the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller.

[0083] Step S102, based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point, it is determined whether the corresponding battery cell has thermal runaway. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the battery cell bypasses the thermal runaway battery cell.

[0084] Specifically, the main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

[0085] The further functional description of the modules and units in the above-mentioned integrated battery cell out-of-control monitoring system is the same as that of the above-mentioned corresponding embodiment and will not be repeated here.

[0086] The integrated battery cell out-of-control monitoring system in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0087] The embodiment of the present invention also provides a computer device having the above Figure 2 and Figure 3 The integrated battery cell runaway monitoring system is shown.

[0088] See also Fig.11 , Fig.11 is a schematic diagram of the structure of a computer device provided by an optional embodiment of the present invention, such as Fig.11 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Fig.11A processor 10 is taken as an example.

[0089] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0090] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0091] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0092] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0093] The computer device also includes an input device 30 and an output device 40. The processor 10, the memory 20, the input device 30 and the output device 40 may be connected via a bus or other means. Fig.11 The example of connecting through bus is taken in the following.

[0094] The input device 30 can receive input digital or character information, and generate key signal input related to the user settings and function control of the computer device, such as a touch screen, a keypad, a mouse, a track pad, a touch pad, an indicator bar, one or more mouse buttons, a trackball, a joystick, etc. The output device 40 may include a display device, an auxiliary lighting device (e.g., an LED) and a tactile feedback device (e.g., a vibration motor), etc. The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0095] The embodiment of the present invention also provides a computer-readable storage medium. The method according to the embodiment of the present invention can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0096] A part of the present invention may be applied as a computer program product, such as a computer program instruction, which, when executed by a computer, can call or provide the method and / or technical solution according to the present invention through the operation of the computer. Those skilled in the art should understand that the existence of the computer program instruction in a computer-readable medium includes, but is not limited to, a source file, an executable file, an installation package file, etc., and accordingly, the way in which the computer program instruction is executed by the computer includes, but is not limited to: the computer directly executes the instruction, or the computer compiles the instruction and then executes the corresponding compiled program, or the computer reads and executes the instruction, or the computer reads and installs the instruction and then executes the corresponding installed program. Here, the computer-readable medium may be any available computer-readable storage medium or communication medium accessible to the computer.

[0097] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An integrated battery cell out-of-control monitoring system, characterized in that: The system comprises: a plurality of battery cell collection control units connected in series, a battery pack formed by a plurality of battery cells connected in series, and a main controller; each of the battery cell collection control units is provided with the same number of thermal runaway monitoring points as the number of battery cells in the battery pack; Each of the battery cell collection control units is connected to a preset number of battery cells in the battery pack and the main controller; each thermal runaway monitoring point is connected to each battery cell in the battery pack; When a battery pack formed by multiple battery cells connected in series is working, each battery cell acquisition and control unit acquires the property parameters of the corresponding connected battery cell and the property parameters of each thermal runaway monitoring point and transmits them to the main controller. The main controller determines whether the corresponding battery cell has thermal runaway based on the property parameters of the battery cell and the property parameters of each thermal runaway monitoring point. When thermal runaway occurs to the battery cell, the battery cell acquisition and control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

2. The system according to claim 1, characterized in that Each of the battery cell acquisition control units further includes a MOS drive switch, a voltage monitoring element, a temperature monitoring element, a thermal runaway monitoring element and a microcontroller; the attribute parameters of the battery cell include the battery cell voltage and the battery cell temperature; the attribute parameters of the thermal runaway monitoring point include the temperature and humidity of each thermal runaway monitoring point; The MOS drive switch, voltage monitoring element, temperature monitoring element and thermal runaway monitoring element are all connected to the microcontroller; The MOS drive switch is used to control the opening and closing of the battery cell; the voltage monitoring element is used to collect the battery cell voltage of the corresponding battery cell, and the temperature monitoring element is used to collect the battery cell temperature of the corresponding battery cell; the thermal runaway monitoring element is used to collect the temperature and humidity of each thermal runaway monitoring point; The microcontroller is used to control the switching operation of the MOS drive switch and control the voltage monitoring element, the temperature monitoring element and the thermal runaway monitoring element to perform acquisition operations according to the control instructions of the main controller.

3. The system according to claim 2, characterized in that Each of the thermal runaway monitoring points is connected to an explosion-proof valve in a corresponding battery cell, and the temperature and humidity of each of the thermal runaway monitoring points are the valve port temperature and valve port humidity of the explosion-proof valve respectively; The thermal runaway monitoring element is also used to collect the valve port temperature and valve port humidity of the explosion-proof valve in the corresponding battery cell.

4. The system according to claim 1, characterized in that Each of the battery cell acquisition control units further includes a voltage regulating circuit, which is connected to each battery cell in the battery pack and is used to adjust the input voltage of each battery cell.

5. The system according to claim 2, characterized in that Each of the battery cell collection and control units further includes an isolation communication module, which is connected to the microcontroller and the main controller respectively, and is used for communication between the microcontroller and the main controller.

6. The system according to claim 2, characterized in that The main controller includes a comparator and an interrupt control chip; the interrupt control chip includes an input and output interface and a signal generator control CU; The comparator is used to receive the property parameters of each battery cell and the property parameters of each thermal runaway monitoring point, and compare the property parameters of each battery cell and the property parameters of the thermal runaway monitoring point with the corresponding battery cell property parameter threshold and the corresponding thermal runaway monitoring point property parameter threshold, respectively, to determine whether the corresponding battery cell has thermal runaway; The main controller is connected to the microcontroller via an input / output interface, and the signal generator control CU is used to send control instructions to the microcontroller.

7. The system according to claim 6, characterized in that When thermal runaway occurs, the signal generator controls the CU to send a control instruction to the microcontroller, and the microcontroller controls the MOS drive switch to bypass the corresponding thermal runaway battery cell.

8. A battery device, characterized in that: The device comprises: an out-of-control monitoring system for an integrated battery cell as claimed in any one of claims 1 to 7 and a battery cell spine; Each of the cell collection and control units in the energy management system of the integrated cell is respectively connected to a preset number of cells in the battery pack and the main controller to form a single monitoring module, and multiple single monitoring modules are packaged through the cell spine to form a battery device.

9. A method for monitoring out-of-control of an integrated battery cell, characterized in that: The out-of-control monitoring system for an integrated battery cell according to any one of claims 1 to 7, the method comprising: When a battery pack formed by connecting multiple cells in series is working, each of the cell acquisition control units is used to acquire the property parameters of the corresponding connected cell and the property parameters of each thermal runaway monitoring point; Based on the attribute parameters of the battery cell and the attribute parameters of each thermal runaway monitoring point, it is determined whether the corresponding battery cell has thermal runaway. When the battery cell has thermal runaway, the battery cell acquisition control unit connected to the corresponding battery cell bypasses the thermal runaway battery cell.

10. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the integrated battery cell out-of-control monitoring method according to claim 9 by executing the computer instructions.

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