CN117977021A - Automatic regulation method and system for gas production of battery cell and electronic equipment - Google Patents
Automatic regulation method and system for gas production of battery cell and electronic equipment Download PDFInfo
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- CN117977021A CN117977021A CN202311744657.4A CN202311744657A CN117977021A CN 117977021 A CN117977021 A CN 117977021A CN 202311744657 A CN202311744657 A CN 202311744657A CN 117977021 A CN117977021 A CN 117977021A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 81
- 230000033228 biological regulation Effects 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims description 11
- 238000013507 mapping Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 230000009134 cell regulation Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 127
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000004891 communication Methods 0.000 description 8
- 238000003860 storage Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of batteries, and discloses a method and a system for automatically adjusting gas production of a battery cell and electronic equipment. The automatic regulation method for the gas production of the battery cell comprises the following steps: acquiring the gas production speed of the battery cell in the charge and discharge process; and outputting an automatic adjustment instruction under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, so that the electrical parameters of the battery core are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current and voltage. According to the invention, the gas production speed is respectively compared with the first threshold value and the third threshold value, when the gas production speed is not smaller than the first threshold value and smaller than the third threshold value, the fact that the gas production speed is larger at the moment and potential safety hazards exist is indicated, so that an automatic adjusting instruction is output at the moment, the gas production speed is reduced in a mode of reducing the electrical parameters of the battery cell, the use safety of the battery is ensured, and the defect that the battery cell produces serious gas in the use process of the battery in the prior art and brings potential use safety hazards is overcome.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an automatic regulation method and system for gas production of a battery cell and electronic equipment.
Background
With the continuous development of new battery energy industry, the energy density requirement on the battery core is higher and higher, and the high energy density brings about serious gas production problem. In the charge and discharge process of the battery core, electrons can reach the negative electrode from an external circuit and then undergo oxidation-reduction reaction with electrolyte on the surface of the negative electrode to generate gas. The excessive gas production can not only influence the interface of the battery cell, so that the battery cell has the problem of water jump in the circulation process, but also cause explosion to influence the use safety of the battery. Therefore, how to improve the use safety of the battery cell is an urgent problem to be solved in the industry.
Disclosure of Invention
The invention provides an automatic regulation method, system and electronic equipment for cell gas production, which are used for solving the defect that the use potential safety hazard is caused by serious cell gas production in the use process of a battery in the prior art.
The first aspect of the invention provides an automatic regulation method for gas production of an electric core, which comprises the following steps:
acquiring the gas production speed of the battery cell in the charge and discharge process;
And outputting an automatic adjustment instruction under the condition that the gas production speed is not less than a first threshold value and is less than a third threshold value, so that the electrical parameters of the battery cell are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current or voltage.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, when the gas production speed is not less than the first threshold value and is less than the third threshold value, an automatic adjustment instruction is output to enable the electrical parameter of the battery cell to be reduced, and the method further comprises the following steps:
Outputting a first automatic adjustment instruction under the condition that the gas production speed is not smaller than a first threshold value and is smaller than a second threshold value; determining the adjustment amplitude based on the gas production rate; according to the adjustment amplitude, the electrical parameter is reduced;
Outputting a second automatic adjusting instruction under the condition that the gas production speed is not smaller than a second threshold value and smaller than a third threshold value, so that the electrical core reduces the electrical parameter to a boundary value.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, the determining the adjustment amplitude based on the gas production speed comprises the following steps:
determining a first difference value according to the gas production speed and the first threshold value;
determining a second difference value according to the second threshold value and the first threshold value;
And determining the adjustment amplitude according to the ratio of the first difference value to the second difference value and the electrical parameter after the battery cell is automatically adjusted last time.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, the method for determining the adjustment amplitude based on the gas production speed further comprises the following steps:
and determining the adjustment amplitude based on the mapping relation between the gas production speed and the electrical parameter.
The automatic regulation method for the gas production of the battery cell provided by the invention further comprises the following steps:
And outputting a pause instruction to finish the automatic adjustment process under the condition that the gas production speed is not smaller than the third threshold value.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, the gas production speed of the battery cell in the charging and discharging process is obtained, and the method further comprises the following steps:
acquiring at least two instantaneous pressures inside the battery within a time threshold;
based on the instantaneous pressure, the gas production rate is determined.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, after at least two instantaneous pressures inside the battery are obtained within the time threshold, the method further comprises the following steps:
performing mathematical calculation on the instantaneous pressure in the time threshold value to determine calculated pressure;
And if the calculated pressure is not less than the pressure threshold, outputting a valve opening instruction to open a one-way valve on the battery airflow channel.
According to the method for automatically adjusting the gas production of the battery cell provided by the invention, before the gas production speed of the battery cell in the charging and discharging process is obtained, the method further comprises the following steps:
Acquiring the humidity inside the battery;
and outputting a pause instruction to finish the automatic adjustment process under the condition that the humidity is not less than the humidity threshold value.
A second aspect of the present invention provides an automatic regulation system for gas production of a battery cell, comprising:
the data acquisition module is used for acquiring the gas production speed of the battery cell in the charging and discharging process;
The data processing module is electrically connected with the data acquisition module and is used for outputting an automatic adjustment instruction to enable the electrical parameters of the battery core to be reduced under the condition that the gas production speed is not smaller than a first threshold value and smaller than a third threshold value, and the electrical parameters comprise one or a combination of at least two of power, current and voltage.
A third aspect of the present invention provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the cell gassing automatic adjustment method according to any one of the preceding claims when the program is executed by the processor.
The invention provides a method and a system for automatically adjusting gas production of a battery cell and electronic equipment. According to the automatic regulation method for the gas production of the battery cell, the gas production speed is compared with the first threshold value and the third threshold value respectively, when the gas production speed is not smaller than the first threshold value and smaller than the third threshold value, the fact that the gas production speed is larger at the moment is indicated, if the gas production speed is not processed, the pressure inside the battery can reach the pressure threshold value at a certain moment in the future, even the pressure is larger than the pressure threshold value, and further potential safety hazards are brought, so that an automatic regulation command is output at the moment, the gas production speed is reduced in a mode of reducing the electrical parameters of the battery cell, the use safety of the battery is ensured, and the defect that the potential use safety hazards are brought to when the battery cell produces gas seriously in the use process in the prior art is solved.
The automatic regulation method system for the cell gas production has at least the advantages.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an automatic regulation method for generating gas from a battery cell according to the present invention;
FIG. 2 is a second flow chart of the method for automatically adjusting the gas production of the battery cell according to the present invention;
FIG. 3 is a schematic diagram of the automatic regulation system for cell gas production provided by the invention;
fig. 4 is a schematic structural diagram of an electronic device provided by the present invention.
Reference numerals:
810. A processor; 820. a communication interface; 830. a memory; 840. a communication bus.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Aiming at the problem of gas production of the battery core of the battery, the prior common measures in the industry are as follows: optimizing material preparation process, optimizing cell system design, optimizing structural member structure, etc. The structural member is usually optimized by adding a ventilation liquid-resistant film inside the battery or adding a one-way valve on an airflow channel of the battery. Whether it is a gas-permeable liquid-resistant film or a one-way valve, they function to discharge the gas generated by the cell to the outside of the battery.
The gas-permeable liquid-resistant film can discharge the gas (including carbon dioxide) generated by the cell to the outside of the cell, but the electrolyte cannot pass through the film. Because the molecular diameter of the water molecules is close to that of the carbon dioxide, the breathable liquid-resistant film has the defect that the water molecules outside the battery cannot be prevented from entering the inside of the battery cell. The water molecules enter the cell and react with electrolyte in the cell, so that the cell jumps. The arrangement of the one-way valve can discharge generated gas in time, but the premise of opening the one-way valve is that the pressure inside the battery reaches a pressure threshold value, and the pressure inside the battery has the problem of overlarge instantaneous pressure, so that the one-way valve can be caused to malfunction.
The invention provides an automatic regulation method for the gas production of a battery cell, which aims to overcome the defect that the use safety hidden trouble is brought by serious gas production of the battery cell in the use process of the battery in the prior art. The method for automatically adjusting the gas production of the battery cell according to the present invention will be described in detail with reference to fig. 1 and 2. Wherein, fig. 1 is a schematic flow chart of the automatic regulation method for the gas production of the battery cell provided by the invention; fig. 2 is a second schematic flow chart of the automatic regulation method for cell gas production provided by the invention.
As shown in fig. 1, an embodiment of the first aspect of the present invention provides a method for automatically adjusting gas production of a battery cell. The automatic regulation method for the gas production of the battery cell comprises the following steps:
s100, acquiring the gas production speed of the battery cell in the charge and discharge process;
And S200, outputting an automatic adjusting instruction under the condition that the gas production speed is not less than a first threshold value and is less than a third threshold value, so that the electrical parameters of the battery core are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current and voltage.
In the specific embodiment of the invention, the gas production speed is compared with the first threshold value and the third threshold value respectively, when the gas production speed is not smaller than the first threshold value and smaller than the third threshold value, the gas production speed is larger at the moment, if the gas production speed is not processed, the pressure inside the battery can reach the pressure threshold value at a certain moment in the future, even be larger than the pressure threshold value, and further the potential safety hazard is brought, so that an automatic adjusting instruction is output at the moment, the gas production speed is reduced in a mode of reducing the electrical parameters of the battery core, the use safety of the battery is ensured, and the defect that the battery in the prior art has serious gas production of the battery core in the use process and brings the potential use safety hazard is solved.
Furthermore, the gas production speed is used as a judging condition, so that the pressure inside the battery is automatically adjusted before the pressure threshold is not reached, the effect of preventing the explosion of the battery can be achieved, and meanwhile, the problem of misoperation of the one-way valve caused by the fact that the pressure is directly used as the judging condition in the prior art is solved.
In the case where the gas production rate is less than the first threshold, as shown in fig. 2, in the embodiment of the present invention, it is explained that the gas production rate is relatively slow at this time, and automatic adjustment of the gas production rate is not required for a while.
As shown in fig. 2, in the specific embodiment of the present invention, when the gas production rate is not less than the third threshold, it is indicated that the gas production rate is too high at this time, and there is a large potential safety hazard, so that a pause command is output to end the current automatic adjustment process, and the battery cell stops charging and discharging, so that personnel overhauls the battery.
In some embodiments, under the condition that the gas production speed is not less than the third threshold value, the first alarm instruction is output at the same time, and the alarm gives an alarm to remind the staff that the battery cell stops charging and discharging.
In some embodiments, the alarm sounds an alarm or/and lights an alarm.
Specifically, the alarm gives an alarm through sound and light. Under the condition that the gas production speed is not less than a third threshold value, outputting a first alarm instruction, and performing sound alarm and red light flashing alarm by the alarm.
As shown in fig. 2, in the embodiment of the present invention, when the gas production rate is not less than the first threshold and is less than the third threshold, an automatic adjustment command is output to decrease the electrical parameters of the battery cell, and the method further includes:
outputting a first automatic adjustment instruction under the condition that the gas production speed is not less than a first threshold value and is less than a second threshold value; determining an adjustment amplitude based on the gas production rate; according to the adjustment amplitude, reducing the electrical parameters;
outputting a second automatic adjusting instruction under the condition that the gas production speed is not less than the second threshold value and is less than the third threshold value, so that the electric core reduces the electric parameter to the boundary value.
Under the condition that the gas production speed is not less than a first threshold value and is less than a second threshold value, the gas production speed reaches the degree of needing automatic adjustment, if the gas production speed is not automatically adjusted, potential safety hazards are possibly caused, and a first automatic adjustment instruction is output; determining an adjustment amplitude based on the gas production rate; and reducing the electrical parameters according to the adjustment amplitude. In other words, the first automatic adjustment command is to make the electrical parameter of the electrical cell decrease according to the adjustment amplitude.
Under the condition that the gas production speed is not less than the second threshold value and is less than the third threshold value, the gas production speed is larger at the moment, if automatic adjustment is not performed, a larger potential safety hazard possibly exists, and a second automatic adjustment instruction is output, so that the electrical parameters of the battery core are reduced to the boundary value.
In some embodiments, the boundary values include one or a combination of at least two of current boundary values, voltage boundary values, or power boundary values.
It will be appreciated that the boundary value may be a value preset into the control system in advance.
In a specific embodiment of the present invention, determining the adjustment amplitude based on the gas production rate comprises:
An adjustment amplitude is determined based on a relationship of the gas production rate, the first threshold, and the second threshold. When specific values of the first thresholds corresponding to different battery management systems are different in different battery management systems, specific values of the second thresholds corresponding to the different battery management systems are different, and the adjustment amplitude is determined based on the relation between the gas production speed, the first thresholds and the second thresholds, so that the judgment accuracy is improved, and the risk of misjudgment is reduced.
In some embodiments, a first difference is determined based on the gas production rate and a first threshold; determining a second difference value according to the second threshold value and the first threshold value; and determining the adjustment amplitude according to the ratio of the first difference value to the second difference value and the electrical parameter of the battery cell after the last automatic adjustment.
Specifically, the adjustment amplitude W satisfies:
In the formula, V represents the gas production speed, and the unit is Pa/h per hour; y represents a first threshold, in Pa/h per hour; z represents a second threshold, in Pa/h per hour; a represents the electrical parameter of the battery cell after the last automatic adjustment.
It will be appreciated that the first threshold is less than the second threshold, and the second threshold is less than the third threshold.
In some embodiments, Y is selected from 0.5Pa/h to 1Pa/h. It will be appreciated that Y may be 0.5Pa/h, may be 1Pa/h, and may be any value between 0.5Pa/h and 1Pa/h, for example 0.75Pa/h.
In some embodiments, Z is selected from 1Pa/h to 5Pa/h. It will be appreciated that Z may be 1Pa/h, may be 5Pa/h, and may be any value between 1Pa/h and 5Pa/h, for example 3Pa/h.
In some embodiments, the third threshold X is selected from 5Pa/h to 20Pa/h. It will be appreciated that X may be 5Pa/h, may be 20Pa/h, and may be any value between 5Pa/h and 20Pa/h, for example 15Pa/h.
In a specific embodiment of the present invention, determining the adjustment amplitude based on the gas production rate further comprises: and determining the adjustment amplitude based on the mapping relation between the gas production speed and the electrical parameter.
In some embodiments, there is a priority in the mapping between different electrical parameters and gas production rate. Specifically, the mapping relation between the power and the gas production speed is the most priority, and is the first priority level. The mapping relation between the voltage and the gas production speed is the second priority level. The mapping relation between the current and the gas production speed is a third priority level.
In the specific embodiment of the invention, when the gas production speed is not less than the second threshold value and is less than the third threshold value, the second automatic adjusting instruction is output, and meanwhile, the second alarming instruction is output, so that the alarm gives an alarm to remind a person of paying special attention to the battery, and the battery has a larger potential safety hazard.
In a specific embodiment of the invention, the alarm gives an audible alarm or/and a light alarm.
Specifically, the alarm gives an alarm through sound and light. Outputting a second alarm instruction under the condition that the gas production speed is not less than a second threshold value and is less than a third threshold value, and giving an audible alarm and a yellow light flashing alarm by the alarm.
In a specific embodiment of the present invention, acquiring a gas production rate of the battery cell in a charging and discharging process, further includes: acquiring at least two instantaneous pressures inside the battery within a time threshold; based on the instantaneous pressure, a gas production rate is determined. Avoiding erroneous judgment and improving the accuracy of the gas production speed.
In some embodiments, one instantaneous pressure is collected every 1 second for 5 seconds, five instantaneous pressures are collected for 5 seconds, and the gas production rate is determined based on the five instantaneous pressures.
Further, four actual gas production rates are calculated according to the five instantaneous pressures, and the four actual gas production rates are calculated, for example, an average value is taken, or a median value is taken as the gas production rate.
In a specific embodiment of the present invention, after acquiring at least two instantaneous pressures inside the battery within the time threshold, the method further comprises:
Performing mathematical calculation on the instantaneous pressure in the time threshold value to determine the calculated pressure;
If the calculated pressure is not less than the pressure threshold, outputting a valve opening instruction to open a one-way valve on the airflow channel of the battery, discharging gas in the battery in time, reducing the risk of explosion of the battery, and avoiding misoperation of the one-way valve.
In a specific embodiment of the present invention, before determining the gas production rate of the battery cell during the charge and discharge process, the method further includes: acquiring the humidity inside the battery; and outputting a pause instruction to finish the automatic adjustment process under the condition that the humidity is not less than the humidity threshold value. When the humidity in the battery is not less than the humidity threshold value, the fact that excessive water molecules outside the battery enter the battery at the moment is explained, the water molecules entering the battery can react with electrolyte to cause the battery core to jump, and the battery needs to be overhauled at the moment.
In the specific embodiment of the invention, under the condition that the humidity is smaller than the humidity threshold value, the battery cell is free from water jump, or the water jump problem is relatively slight, so that the automatic adjustment can be performed.
In the specific embodiment of the invention, in order to prevent water molecules outside the battery from entering the battery to cause the battery core to jump, the battery shell is sealed, specifically, a sealing glue or welding mode is adopted to seal the shell gap, so that the battery meets a certain sealing grade, and the water molecules outside the battery are effectively prevented from entering the battery.
In the specific embodiment of the invention, inert gas is filled in the internal space of the battery, so that the internal pressure and the external pressure of the battery are balanced, and the phenomenon that the battery is concave due to the excessively low internal pressure of the battery is avoided.
In the specific embodiment of the invention, the one-way valve is arranged on the airflow channel of the battery, and the pressure inside the battery is adjusted by opening the one-way valve, so that the deformation of the battery and the extrusion of the internal structure of the battery caused by the excessive gas production of the battery core are avoided. Further, the ratio of the gas production volume to the residual space inside the battery is controlled within the range of 2-5, and the change of the pressure, the gas production speed and the humidity inside the battery is detected in real time by adopting a battery management system.
The automatic regulation system for cell gas production provided in the second aspect of the present invention is described in detail below with reference to fig. 3. Fig. 3 is a schematic structural diagram of the automatic regulation system for generating gas from the battery cell.
As shown in fig. 3, an embodiment of the second aspect of the present invention provides an automatic regulation system for cell gas production. The automatic regulation system for the gas production of the battery cell comprises a data acquisition module and a data processing module; the data acquisition module is used for acquiring the gas production speed of the battery cell in the charging and discharging process; the data processing module is electrically connected with the data determining module and is used for outputting an automatic adjusting instruction under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, so that the electrical parameters of the battery core are reduced, and the electrical parameters comprise one or a combination of at least two of power, current and voltage.
In the specific embodiment of the invention, the gas production speed of the battery cell in the charging and discharging process is obtained through a data obtaining module; judging the magnitude relation between the gas production speed and the first threshold value and the second threshold value through a data processing module; and under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, the data processing module outputs an automatic adjustment instruction to enable the electrical parameters of the battery cell to be reduced, so that the automatic adjustment of the gas production of the battery cell is realized, and the problem of explosion of the battery caused by overlarge gas production is avoided. The defect that the battery in the prior art has serious gas production of the battery core in the use process and brings potential safety hazards in use is overcome.
Furthermore, the gas production speed is used as a judging condition, so that the pressure inside the battery is automatically adjusted before the pressure threshold is not reached, the effect of preventing the explosion of the battery can be achieved, and meanwhile, the problem of misoperation of the one-way valve caused by the fact that the pressure is directly used as the judging condition in the prior art is solved.
Fig. 4 illustrates a physical schematic diagram of an electronic device, as shown in fig. 4, which may include: processor 810, communication interface (Communications Interface) 820, memory 830, and communication bus 840, wherein processor 810, communication interface 820, memory 830 accomplish communication with each other through communication bus 840. Processor 810 may invoke logic instructions in memory 830 to perform a cell gas production auto-tune method comprising: acquiring the gas production speed of the battery cell in the charge and discharge process; and outputting an automatic adjustment instruction under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, so that the electrical parameters of the battery core are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current and voltage.
Further, the logic instructions in the memory 830 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method for automatically adjusting the gas production of a cell provided by the above methods, the method comprising: acquiring the gas production speed of the battery cell in the charge and discharge process; and outputting an automatic adjustment instruction under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, so that the electrical parameters of the battery core are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current and voltage.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the above-provided cell gassing automatic adjustment methods, the method comprising: acquiring the gas production speed of the battery cell in the charge and discharge process; and outputting an automatic adjustment instruction under the condition that the gas production speed is not less than the first threshold value and is less than the third threshold value, so that the electrical parameters of the battery core are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current and voltage.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An automatic regulation method for generating gas of an electric core is characterized by comprising the following steps:
acquiring the gas production speed of the battery cell in the charge and discharge process;
And outputting an automatic adjustment instruction under the condition that the gas production speed is not less than a first threshold value and is less than a third threshold value, so that the electrical parameters of the battery cell are reduced, wherein the electrical parameters comprise one or a combination of at least two of power, current or voltage.
2. The method for automatically adjusting the gas production rate of the electrical core according to claim 1, wherein the outputting an automatic adjustment command to decrease the electrical parameter of the electrical core if the gas production rate is not less than a first threshold value and less than a third threshold value, further comprises:
outputting a first automatic adjustment instruction under the condition that the gas production speed is not smaller than a first threshold value and is smaller than a second threshold value; determining an adjustment amplitude based on the gas production rate; according to the adjustment amplitude, the electrical parameter is reduced;
Outputting a second automatic adjusting instruction under the condition that the gas production speed is not smaller than a second threshold value and smaller than a third threshold value, so that the electrical core reduces the electrical parameter to a boundary value.
3. The method of claim 2, wherein the determining an adjustment amplitude based on the gas production rate comprises:
determining a first difference value according to the gas production speed and the first threshold value;
determining a second difference value according to the second threshold value and the first threshold value;
And determining the adjustment amplitude according to the ratio of the first difference value to the second difference value and the electrical parameter after the battery cell is automatically adjusted last time.
4. The method of automatic regulation of cell gas production according to claim 2, wherein the determining an adjustment amplitude based on the gas production rate further comprises:
and determining the adjustment amplitude based on the mapping relation between the gas production speed and the electrical parameter.
5. The automatic cell gas production adjustment method according to claim 1, further comprising:
And outputting a pause instruction to finish the automatic adjustment process under the condition that the gas production speed is not smaller than the third threshold value.
6. The method for automatically adjusting gas production of a battery cell according to claim 1, wherein the step of obtaining the gas production rate of the battery cell in the charge and discharge process further comprises:
acquiring at least two instantaneous pressures inside the battery within a time threshold;
based on the instantaneous pressure, the gas production rate is determined.
7. The method for automatically adjusting the gas production of the battery cell according to claim 6, further comprising, after the obtaining at least two instantaneous pressures inside the battery cell within the time threshold:
performing mathematical calculation on the instantaneous pressure in the time threshold value to determine calculated pressure;
and if the calculated pressure is not less than the pressure threshold, outputting a valve opening instruction to open a one-way valve on the airflow channel of the battery.
8. The automatic cell gassing adjustment method according to any of claims 1 to 7, further comprising, before said obtaining the gassing speed of the cell during charging and discharging:
Acquiring the humidity inside the battery;
and outputting a pause instruction to finish the automatic adjustment process under the condition that the humidity is not less than the humidity threshold value.
9. An automatic regulation system for gas production of a battery cell, comprising:
the data acquisition module is used for acquiring the gas production speed of the battery cell in the charging and discharging process;
The data processing module is electrically connected with the data acquisition module and is used for outputting an automatic adjustment instruction to enable the electrical parameters of the battery core to be reduced under the condition that the gas production speed is not smaller than a first threshold value and smaller than a third threshold value, and the electrical parameters comprise one or a combination of at least two of power, current and voltage.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the cell gassing automatic adjustment method according to any of claims 1 to 8 when the program is executed by the processor.
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