A method and system for monitoring an electrolyte

Abstract

The embodiment of the present application discloses a kind of electrolyte monitoring method and monitoring system.Electrolyte is the electrolyte in battery, and the monitoring method comprises the following steps: obtaining the parameter of battery;According to the parameter of battery, determine the target injection amount of electrolyte in battery;According to the parameter of battery and target injection amount, determine the injection amount of electrolyte that needs to be adjusted, to adjust the actual liquid level height of electrolyte, and the parameter of battery includes the actual liquid level height of electrolyte in battery.The electrolyte monitoring method and monitoring system provided by the embodiment of the present application can solve the problem of disassembling battery.

Description

Technical Field

[0001] The present invention relates to electrolyte monitoring technology, and more particularly to an electrolyte monitoring method and monitoring system. Background Technology

[0002] Electrolytes, such as those in batteries, serve as carriers for ion transport and are a crucial component of batteries. Reliable monitoring of the electrolyte is essential to ensure proper battery operation. Currently, existing electrolyte monitoring methods typically require battery disassembly, increasing costs. Summary of the Invention

[0003] This invention provides a method and system for monitoring electrolytes to address the problem of needing to disassemble batteries.

[0004] In a first aspect, embodiments of the present invention provide a method for monitoring an electrolyte, wherein the electrolyte is an electrolyte in a battery, and the monitoring method includes: Obtain the parameters of the battery; Based on the parameters of the battery, determine the target amount of electrolyte injected into the battery; Based on the battery parameters and the target injection volume, the required injection volume of the electrolyte is determined to adjust the actual electrolyte level. The battery parameters include the actual electrolyte level in the battery.

[0005] Optionally, the parameters of the battery include the height of the battery, and determining the target electrolyte injection volume in the battery based on the battery parameters includes: Based on the height of the battery, the target height of the electrolyte is determined to be k times the height of the battery, where k is greater than 0 and less than 1; The target injection volume is determined based on the battery parameters and the target height.

[0006] Optionally, determining the required adjustment of the electrolyte injection volume based on the battery parameters and the target injection volume includes: When the actual liquid level of the electrolyte changes, the amount of free electrolyte in the battery is determined based on the actual liquid level of the electrolyte and the parameters of the battery. When the free amount exceeds the preset range, the amount of electrolyte that needs to be adjusted is determined based on the free amount and the parameters of the battery.

[0007] Optionally, after determining the required adjustment of the electrolyte injection volume, the process includes: If the actual height of the electrolyte exceeds the preset range after adjusting the injection volume according to the required adjustment of the electrolyte, it can be determined that the compaction density of the positive electrode and / or the compaction density of the negative electrode of the battery is abnormal.

[0008] Optionally, the free amount of the electrolyte is m 游 =H 实液 ×ρ 液 ×S 液 S 液 =L C ×T C -a×L JR ×T JR , where H 实液 ρ is the actual liquid level height of the electrolyte. 液 S is the density of the electrolyte. 液 L represents the cross-sectional area of ​​the electrolyte in the battery. C T is the length of the cell in the battery. C Let L be the thickness of the battery cell, and α be the core-pack constant coefficient of the battery cell, with a value ranging from 0.8 to 1. JR T is the length of the core package. JR The thickness of the core package.

[0009] Optionally, the actual injection volume m of the electrolyte 实注 The amount of free electrolyte m 游 The relationship between them is: m 实注 -b×m 实注 =m 游 +ρ 液 ×(P 正 ×V 正 +P 负 ×V 负 +P 隔 ×V 隔 ), where ρ 液 P is the density of the electrolyte. 正 V represents the porosity of the positive electrode in the battery. 正 P is the volume of the positive electrode. 负 V represents the porosity of the negative electrode in the battery. 负 P is the volume of the negative electrode. 隔 V represents the porosity of the separator in the battery. 隔 The volume of the diaphragm is given.

[0010] Optionally, the target injection volume is m 目注 = H 目液 ×ρ 液 ×S 液 +V 正 / ρc正 +V 负 / ρ c负 +P 隔 ×V 隔 , where H 目液 ρ is the target height of the electrolyte. 液 S is the density of the electrolyte. 液 V is the cross-sectional area of ​​the electrolyte in the battery. 正 ρ is the volume of the positive electrode of the battery. c正 V is the compaction density of the positive electrode sheet of the battery. 负 ρ is the volume of the negative electrode of the battery. c负 P is the compaction density of the negative electrode sheet of the battery. 隔 V represents the porosity of the separator in the battery. 隔 The volume of the diaphragm is given.

[0011] Secondly, embodiments of the present invention provide an electrolyte monitoring system, wherein the electrolyte is the electrolyte in a battery, and the monitoring system includes: a controller and a detector, the controller and the detector being electrically connected, and the detector being used to monitor the actual liquid level height of the electrolyte in the battery in real time; the electrolyte monitoring method as described in the first aspect is executed by the controller.

[0012] Optionally, the battery is a battery with a transparent viewing window.

[0013] Optionally, the detection machine is a computed tomography (CT) scanner.

[0014] The electrolyte monitoring method and system provided in this invention, wherein the electrolyte is the electrolyte in a battery, include: acquiring battery parameters; determining the target injection volume of the electrolyte in the battery based on the battery parameters; and determining the required adjustment volume of the electrolyte based on the battery parameters and the target injection volume to adjust the actual electrolyte level. The battery parameters include the actual electrolyte level. The electrolyte monitoring method and system provided in this invention determine the required adjustment volume of the electrolyte based on the battery parameters and the target injection volume to adjust the actual electrolyte level, without disassembling the battery, thus solving the problem of increased costs caused by destructive testing involving battery disassembly in the prior art. Attached Figure Description

[0015] Figure 1 This is a flowchart of an electrolyte monitoring method provided in Embodiment 1 of the present invention; Figure 2 This is a flowchart of an electrolyte monitoring method provided in Embodiment 2 of the present invention; Figure 3This is a schematic diagram of the target height of an electrolyte provided in Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the cell size and cell package size provided in Embodiment 2 of the present invention; Figure 5 This is a structural block diagram of an electrolyte monitoring system provided in Embodiment 3 of the present invention; Figure 6 This is a schematic diagram of the structure of a terminal provided in Embodiment 4 of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0017] Example 1 Figure 1 This is a flowchart of an electrolyte monitoring method provided in Embodiment 1 of the present invention. This embodiment can be applied to monitoring electrolytes, such as those in batteries. The method can be executed by a controller in an electrolyte monitoring system, which can be implemented in software and / or hardware. The method specifically includes the following steps: Step 110: Obtain battery parameters.

[0018] The battery parameters include the size parameters of the battery cells, the size parameters of the battery pack, the parameters of the electrolyte such as density, the size parameters of the positive electrode, the size parameters of the negative electrode, and the actual liquid level height of the electrolyte (real-time liquid level height).

[0019] Step 120: Determine the target amount of electrolyte to be injected into the battery based on the battery parameters.

[0020] Specifically, the target electrolyte injection volume can be calculated using battery parameters such as electrolyte density, cross-sectional area of ​​electrolyte in the battery, volume of positive electrode, compaction density of positive electrode, volume of negative electrode, compaction density of negative electrode, porosity of separator, volume of separator, and target electrolyte height (determined by battery parameters such as cell height).

[0021] Step 130: Based on the battery parameters and the target electrolyte injection volume, determine the electrolyte injection volume that needs to be adjusted in order to regulate the actual electrolyte level. The battery parameters include the actual electrolyte level in the battery.

[0022] In one implementation, the electrolyte injection volume that needs adjustment is the amount of electrolyte that needs to be replenished. When the actual electrolyte level in the battery parameters is lower than a preset threshold, electrolyte needs to be replenished. Based on the target electrolyte injection volume and the battery parameters, the required electrolyte injection volume, such as the amount of electrolyte that needs to be replenished, can be calculated, thereby adjusting the actual electrolyte level to meet the normal operating requirements of the battery.

[0023] It should be noted that the value of the preset threshold in this embodiment can be determined according to the actual monitoring needs of the electrolyte, and is not limited here.

[0024] The electrolyte monitoring method provided in this embodiment includes: acquiring battery parameters; determining the target electrolyte injection volume in the battery based on the battery parameters; and determining the required adjustment volume of the electrolyte injection volume based on the battery parameters and the target injection volume to adjust the actual electrolyte level. The battery parameters include the actual electrolyte level. This electrolyte monitoring method, by determining the required adjustment volume of the electrolyte injection volume based on the battery parameters and the target injection volume to adjust the actual electrolyte level, eliminates the need to disassemble the battery, thus solving the problem of increased costs caused by destructive testing involving battery disassembly in existing technologies.

[0025] Example 2 Figure 2 This is a flowchart of an electrolyte monitoring method provided in Embodiment 2 of the present invention. This embodiment can be applied to monitoring electrolytes, such as those in batteries. The method can be executed by a controller in an electrolyte monitoring system, which can be implemented in software and / or hardware. The method specifically includes the following steps: Step 210: Obtain the battery parameters.

[0026] The battery parameters include the size parameters of the battery cells, the size parameters of the battery pack, the parameters of the electrolyte such as density, the size parameters of the positive electrode, the size parameters of the negative electrode, and the actual liquid level height of the electrolyte (real-time liquid level height).

[0027] Step 220: Based on the battery parameters, determine the target electrolyte injection volume in the battery, specifically including: Based on the battery height, the target height of the electrolyte is determined to be k times the battery height, where k is greater than 0 and less than 1; the battery parameters include the battery height. Based on the battery parameters and target height, determine the target electrolyte injection volume so that the actual electrolyte level reaches the target level.

[0028] Figure 3This is a schematic diagram of the target height of an electrolyte according to Embodiment 2 of the present invention. (Reference) Figure 3 The target electrolyte level, i.e., the target height, is located between points A and B. The height difference C between point A and the bottom of the battery cell is greater than 1 / D of the cell height; for example, D is 3. The height of point B is lower than the top of the electrodes (positive and negative electrodes), and the height difference between point B and the top of the electrodes is greater than E; for example, E is 10 mm. Specifically, the target electrolyte injection volume is m. 目注 =H 目液 ×ρ 液 ×S 液 +V 正 / ρ c正 +V 负 / ρ c负 +P 隔 ×V 隔 , where H 目液 ρ is the target height of the electrolyte. 液 S is the density of the electrolyte. 液 V is the cross-sectional area of ​​the electrolyte in the battery. 正 ρ is the volume of the positive electrode of the battery. c正 V is the compaction density of the positive electrode of the battery. 负 ρ is the volume of the negative electrode of the battery. c负 P is the compaction density of the negative electrode of the battery. 隔 V represents the porosity of the separator in the battery. 隔 For the volume of the separator, the battery parameters (known quantities) include H. 目液 ρ 液 S 液 V 正 ρ c正 V 负 ρ c负 P 隔 V 隔 Substituting the parameters into the above formula yields the target electrolyte injection volume, m. 目注 .

[0029] Step 230: When the actual liquid level of the electrolyte changes, determine the amount of free electrolyte in the battery based on the actual liquid level of the electrolyte and the battery parameters.

[0030] In one embodiment, the free amount of electrolyte is m 游 =H 实液 ×ρ 液 ×S 液 S 液 =L C ×T C -a×L JR ×T JR , where H实液 ρ is the actual liquid level height of the electrolyte. 液 S is the density of the electrolyte. 液 L is the cross-sectional area of ​​the electrolyte in the battery. C T represents the length of the battery cell. C L represents the thickness of the battery cell, and 'a' represents the cell packing constant coefficient, with a value ranging from 0.8 to 1. JR T is the length of the core package. JR Given the thickness of the core pack, substituting the parameters into the above formula yields the amount of free electrolyte, m. 游 .

[0031] Furthermore, Figure 4 This is a schematic diagram of the cell size and cell package size provided in Embodiment 2 of the present invention. (Reference) Figure 4 The length of the battery cell is greater than the length of the battery pack, the thickness of the battery cell is greater than the thickness of the battery pack, and the product of the length and thickness of the battery cell is greater than the product of the length and thickness of the battery pack.

[0032] Step 240: When the free amount exceeds the preset range, determine the amount of electrolyte to be injected based on the free amount and the battery parameters, so as to adjust the actual liquid level of the electrolyte.

[0033] Specifically, the actual electrolyte injection volume m 实注 Free amount m with electrolyte 游 The relationship is: m 实注 -b×m 实注 =m 游 +ρ 液 ×(P 正 ×V 正 +P 负 ×V 负 +P 隔 ×V 隔 ), P 正 ×V 正 +P 负 ×V 负 +P 隔 ×V 隔 =a / ρ c正 ×L 正 ×W 正 ×T 正 + b / ρ c负 ×L 负 ×W 负 ×T 正 +ρ 隔 ×L 隔 ×W 隔 ×T 隔 , where ρ 液 P is the density of the electrolyte. 正V represents the porosity of the positive electrode in the battery. 正 P is the volume of the positive electrode. 负 V represents the porosity of the negative electrode in the battery. 负 For the volume of the negative electrode, P 隔 V represents the porosity of the separator in the battery. 隔 Let ρ be the volume of the diaphragm, α be the cell packing constant coefficient, and α range from 0.8 to 1. c正 L is the compaction density of the positive electrode. 正 W is the length of the positive electrode plate. 正 T represents the width of the positive electrode. 正 ρ is the thickness of the positive electrode, b is the electrolyte consumption coefficient of the interface film in the battery, b is less than 5%, and ρ c负 L is the compaction density of the negative electrode. 负 W is the length of the negative electrode. 负 T represents the width of the negative electrode. 负 ρ represents the thickness of the positive and negative electrodes. 隔 L represents the porosity of the separator in the battery. 隔 W is the length of the diaphragm. 隔 T is the width of the diaphragm. 隔 This refers to the thickness of the separator. The battery parameters (known quantities) include ρ. 液 P 正 V 正 (L) 正 W 正 T 正 ), P 负 V 负 (L) 负 W 负 T 负 ), P 隔 V 隔 (L) 隔 W 隔 T 正 From the above formula, we can see that m in the above formula... 实注 The injection volume needs to be adjusted when replacing with electrolyte, and m 游 The amount of free electrolyte that needs to be adjusted (the amount of free electrolyte that needs to be adjusted is determined by m) is the amount of free electrolyte that needs to be adjusted. 游 And a preset range is determined; for example, the amount of free electrolyte that needs to be adjusted is a certain value within the preset range and m. 游 The difference between the two values ​​can be used to determine the amount of electrolyte that needs to be adjusted, thereby adjusting the actual electrolyte level to reach the target level or within a certain range.

[0034] In addition, after determining the required electrolyte injection volume, if the actual electrolyte height exceeds the preset range after adjusting the actual electrolyte height according to the required injection volume, it can be determined that the positive electrode compaction density and / or negative electrode compaction density of the battery is abnormal, and corresponding prompt information will be issued to remind relevant personnel to carry out subsequent processing.

[0035] It should be noted that the values ​​of each parameter in this embodiment can be determined according to the actual electrolyte monitoring requirements, and are not limited here.

[0036] The electrolyte monitoring method provided in this embodiment determines the amount of free electrolyte in the battery based on the actual electrolyte level and battery parameters when the actual electrolyte level changes. When the amount of free electrolyte exceeds a preset range, the method determines the amount of electrolyte to be adjusted based on the amount of free electrolyte and battery parameters to regulate the actual electrolyte level. This eliminates the need to disassemble the battery, thus solving the problem of increased costs caused by destructive testing involving battery disassembly in existing technologies.

[0037] Example 3 Figure 5 This is a structural block diagram of an electrolyte monitoring system provided in Embodiment 3 of the present invention. The electrolyte is the electrolyte in a battery, as shown in the reference diagram. Figure 5 The monitoring system includes a controller 10 and a detector 20, which are electrically connected. The detector 20 is used to monitor the actual electrolyte level in the battery in real time. The electrolyte monitoring method described in any embodiment of the present invention is executed by the controller 10. The specific execution process of the controller can be referred to in any of the above embodiments, and will not be repeated here.

[0038] Optionally, the battery can be equipped with a transparent viewing window. This design allows for easy and intuitive observation of the electrolyte level.

[0039] Optionally, the testing machine is a computed tomography (CT) scanner.

[0040] Among them, the testing machine can detect the actual level of electrolyte in the battery. With its core advantages of non-destructive testing, 3D visualization, and high precision, the tomography (CT) testing machine demonstrates significant technological value compared to traditional contact and 2D testing methods in electrolyte level detection scenarios, especially suitable for scenarios with stringent electrolyte management requirements, such as new energy batteries, energy storage devices, and fine chemicals. CT testing is a non-destructive test, ensuring battery integrity and full lifecycle monitoring. Electrolytes often have characteristics such as flammability, volatility, and strong corrosiveness, and are usually encapsulated in sealed metal or composite shells. Traditional dissection-based testing would directly damage battery integrity, leading to product scrapping and making batch sampling and full lifecycle tracking impossible. The tomography technology of the CT testing machine can penetrate the battery shell, completing level detection without damaging the sample or contaminating the electrolyte. This avoids the material waste and cost loss caused by destructive testing and supports repeated monitoring of the same battery. For example, in lithium battery R&D, this technology can be used to track the dynamic changes in electrolyte level during long-term charge-discharge cycles, providing continuous data support for battery aging mechanism analysis. In production sampling inspection, it can accurately identify products with abnormal electrolyte levels while preserving the usability of qualified battery samples, improving the economic efficiency of testing. Traditional electrolyte level detection (such as tuning fork type and float type) usually obtains single-point or two-dimensional electrolyte level data, which is difficult to reflect the uniformity of electrolyte distribution in the battery, stratification and sedimentation and other hidden problems, and is easily affected by the viscosity of the medium and temperature fluctuations, resulting in measurement deviations. Tomography scanning machines, through multi-angle scanning and 3D reconstruction algorithms, can intuitively present the three-dimensional distribution of electrolyte in a confined space. They can not only accurately measure the electrolyte level but also quantitatively analyze details such as surface flatness, localized electrolyte accumulation, and contact and wetting of electrodes / diaphragms. Their measurement accuracy can reach ±0.3%FS or even higher, conforming to international standards such as GB / T 34874.3 and VDI / VDE 2630. This effectively avoids the false alarm rate of traditional methods (traditional sensors can have a false alarm rate of up to 12% in harsh environments), providing accurate data support for production process optimization. For example, in the lithium battery electrolyte filling process, 3D imaging can confirm whether the electrolyte uniformly wets the electrodes, avoiding battery capacity degradation caused by insufficient localized electrolyte levels.

[0041] Furthermore, the production and storage of electrolytes often face complex conditions such as high temperature, high pressure, strong electromagnetic interference, and corrosive media. Traditional sensors are susceptible to material corrosion and signal interference, leading to decreased measurement stability. Tomography scanners, using a non-contact measurement principle, do not require direct contact with the electrolyte. Coupled with a corrosion-resistant encapsulation design, they can adapt to the detection needs of different types of electrolytes (such as organic and acidic electrolytes). They are unaffected by sudden temperature changes, electromagnetic interference, or changes in medium viscosity, and their response time can be controlled in milliseconds, meeting the real-time monitoring requirements of continuous production. For example, in the maintenance of new energy vehicle battery packs, even under high temperature and vibration conditions, they can stably detect electrolyte levels, providing timely warnings of potential leaks and dry burning, offering front-end protection for battery safety. While detecting electrolyte levels, the tomography scanner can simultaneously acquire other key structural information about the battery's internal structure, achieving "one-stop testing" and significantly improving detection efficiency and the overall value of the data. For example, in lithium battery testing, multiple indicators can be monitored simultaneously, including electrolyte level, electrode alignment, welding porosity, metal particle impurities, and the distance between the core and the casing. Compared to traditional single-parameter testing methods, the analysis efficiency can be improved by more than five times. In energy storage battery operation and maintenance, data such as electrolyte level changes, electrode structure deformation, and active material shedding can be combined to comprehensively assess the battery's health status, providing a comprehensive basis for operation and maintenance strategy formulation. This multi-parameter collaborative testing capability can reduce the investment in testing equipment and operational procedures, adapting to the high-efficiency quality inspection needs of large-scale production. From battery R&D to production and operation and maintenance, tomography scanners can play a core role in the entire chain, forming a closed loop of quality control. During the battery R&D phase, 4D scanning (three-dimensional space + time dimension) can be used to observe the dynamic evolution of electrolyte level with charge-discharge cycles and temperature changes in real time, providing direct data support for electrolyte formulation optimization and container structure design. In the production phase, it can be embedded in key processes such as electrolyte injection, packaging, and testing to achieve online sampling and process correction, preventing the outflow of batches of products with substandard electrolyte levels. In the operation and maintenance phase, non-destructive electrolyte level detection can be performed on retired batteries to analyze the correlation between electrolyte level decay and battery performance degradation, providing a basis for battery reuse and recycling. For example, optimizing electrolyte level control through tomography not only reduces production safety risks but also improves battery product consistency and lifespan. In summary, tomography machines, with their core advantages of non-destructive, high-precision, highly adaptable, and multi-dimensional detection, effectively solve the pain points of safety, accuracy, and efficiency in electrolyte level detection, and are widely used, especially in high-end manufacturing fields such as new energy and fine chemicals.

[0042] The electrolyte monitoring system provided in this embodiment belongs to the same inventive concept as the electrolyte monitoring method provided in any embodiment of the present invention, and has corresponding beneficial effects. For technical details not covered in this embodiment, please refer to the electrolyte monitoring method provided in any embodiment of the present invention.

[0043] Example 4 Figure 6 This is a schematic diagram of the structure of a terminal provided in Embodiment 4 of the present invention. Figure 6 A block diagram of an exemplary device 412 suitable for implementing embodiments of the present invention is shown. Figure 6 The device 412 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0044] like Figure 6 As shown, device 412 is represented as a general-purpose device. Components of device 412 may include, but are not limited to: one or more processors 416, storage device 428, and bus 418 connecting different system components (including storage device 428 and processor 416).

[0045] Bus 418 represents one or more of several bus architectures, including a memory device bus or memory device controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Subversive Alliance (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0046] Device 412 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by device 412, including volatile and non-volatile media, removable and non-removable media.

[0047] Storage device 428 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 430 and / or cache memory 432. Device 412 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 434 may be used to read and write non-removable, non-volatile magnetic media (… Figure 6 Not shown; usually referred to as a "hard drive"). Although Figure 6As not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disc drive for reading and writing to a removable non-volatile optical disc, such as a Compact Disc Read-Only Memory (CD-ROM), a Digital Video Disc Read-Only Memory (DVD-ROM), or other optical media. In these cases, each drive may be connected to bus 418 via one or more data media interfaces. Storage device 428 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0048] A program / utility 440 having a set (at least one) of program modules 442 may be stored in, for example, a storage device 428. Such program modules 442 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 442 typically perform the functions and / or methods described in the embodiments of the present invention.

[0049] Device 412 can also communicate with one or more external devices 414 (e.g., keyboard, pointing terminal, display 424, etc.), and with one or more terminals that enable a user to interact with device 412, and / or with any terminal that enables device 412 to communicate with one or more other computing terminals (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 422. Furthermore, device 412 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 420. Figure 6 As shown, network adapter 420 communicates with other modules of device 412 via bus 418. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with device 412, including but not limited to: microcode, terminal drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) systems, tape drives, and data backup storage systems.

[0050] The processor 416 (which can be considered as a controller in an electrolyte monitoring system) executes various functional applications and data processing by running a program stored in the storage device 428, such as implementing the electrolyte monitoring method provided in the embodiments of the present invention, which includes: Obtain battery parameters; Determine the target electrolyte injection volume in the battery based on the battery parameters; Based on the battery parameters and the target electrolyte injection volume, determine the electrolyte injection volume that needs to be adjusted in order to regulate the actual electrolyte level. The battery parameters include the actual electrolyte level in the battery.

[0051] Example 5 Embodiment 5 of the present invention provides a computer-readable storage medium storing a computer program thereon. When executed by a controller, the program implements the electrolyte monitoring method provided in the embodiments of the present invention, the method comprising: Obtain battery parameters; Determine the target electrolyte injection volume in the battery based on the battery parameters; Based on the battery parameters and the target electrolyte injection volume, determine the electrolyte injection volume that needs to be adjusted in order to regulate the actual electrolyte level. The battery parameters include the actual electrolyte level in the battery.

[0052] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0053] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0054] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0055] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or terminal. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0056] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, rearrangements, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A method for monitoring electrolyte, characterized in that, The electrolyte is the electrolyte used in a battery, and the monitoring method includes: Obtain the parameters of the battery; Based on the parameters of the battery, determine the target amount of electrolyte injected into the battery; Based on the battery parameters and the target injection volume, the required injection volume of the electrolyte is determined to adjust the actual electrolyte level. The battery parameters include the actual electrolyte level in the battery.

2. The method for monitoring the electrolyte according to claim 1, characterized in that, The parameters of the battery include the height of the battery, and determining the target electrolyte injection volume in the battery based on the battery parameters includes: Based on the height of the battery, the target height of the electrolyte is determined to be k times the height of the battery, where k is greater than 0 and less than 1; The target injection volume is determined based on the battery parameters and the target height.

3. The method for monitoring the electrolyte according to claim 1, characterized in that, Determining the required adjustment of the electrolyte injection volume based on the battery parameters and the target injection volume includes: When the actual liquid level of the electrolyte changes, the amount of free electrolyte in the battery is determined based on the actual liquid level of the electrolyte and the parameters of the battery. When the free amount exceeds the preset range, the amount of electrolyte that needs to be adjusted is determined based on the free amount and the parameters of the battery.

4. The method for monitoring the electrolyte according to any one of claims 1-3, characterized in that, After determining the required adjustment of the electrolyte injection volume, the process includes: If the actual height of the electrolyte exceeds the preset range after adjusting the injection volume according to the required adjustment of the electrolyte, it can be determined that the compaction density of the positive electrode and / or the compaction density of the negative electrode of the battery is abnormal.

5. The method for monitoring the electrolyte according to claim 3, characterized in that, The free amount of the electrolyte is m 游 =H 实液 ×ρ 液 ×S 液 S 液 =L C ×T C -a×L JR ×T JR , where H 实液 ρ is the actual liquid level height of the electrolyte. 液 S is the density of the electrolyte. 液 L represents the cross-sectional area of ​​the electrolyte in the battery. C T is the length of the cell in the battery. C Let L be the thickness of the battery cell, and α be the core-pack constant coefficient of the battery cell, with a value ranging from 0.8 to 1. JR T is the length of the core package. JR The thickness of the core package.

6. The method for monitoring the electrolyte according to claim 3, characterized in that, The actual injection volume m of the electrolyte 实注 The amount of free electrolyte m 游 The relationship between them is: m 实注 -b×m 实注 =m 游 +ρ 液 ×(P 正 ×V 正 +P 负 ×V 负 +P 隔 ×V 隔 ), where ρ 液 P is the density of the electrolyte. 正 V represents the porosity of the positive electrode in the battery. 正 P is the volume of the positive electrode. 负 V represents the porosity of the negative electrode in the battery. 负 P is the volume of the negative electrode. 隔 V represents the porosity of the separator in the battery. 隔 The volume of the diaphragm is given.

7. The method for monitoring the electrolyte according to any one of claims 1-3, characterized in that, The target injection volume is m 目注 = H 目液 ×ρ 液 ×S 液 +V 正 / ρ c正 +V 负 / ρ c负 +P 隔 ×V 隔 , where H 目液 ρ is the target height of the electrolyte. 液 S is the density of the electrolyte. 液 V is the cross-sectional area of ​​the electrolyte in the battery. 正 ρ is the volume of the positive electrode of the battery. c正 V is the compaction density of the positive electrode sheet of the battery. 负 ρ is the volume of the negative electrode of the battery. c负 P is the compaction density of the negative electrode sheet of the battery. 隔 V represents the porosity of the separator in the battery. 隔 The volume of the diaphragm is given.

8. An electrolyte monitoring system, characterized in that, The electrolyte is the electrolyte in a battery. The monitoring system includes a controller and a detector, the controller and the detector being electrically connected. The detector is used to monitor the actual electrolyte level in the battery in real time. The electrolyte monitoring method as described in any one of claims 1-7 is executed by the controller.

9. The electrolyte monitoring system according to claim 8, characterized in that, The battery is a battery with a transparent viewing window.

10. The electrolyte monitoring system according to any one of claims 8-9, characterized in that, The detection machine is a tomography detection machine.

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