Power battery capacity grading platform

Abstract

The invention relates to a capacity grading platform for a power battery. The capacity grading platform comprises a plurality of battery capacity grading chambers, a refrigeration module, a temperature detection module and a control chip, the battery capacity grading chamber is used for carrying out capacity grading test on the power battery; the refrigeration module is respectively connected with each battery capacity grading chamber; the control chip is connected with each battery capacity grading chamber through the temperature detection module, and the control chip is connected with the refrigeration module; the control chip adjusts the refrigeration module to output the cold air amount of each battery capacity grading chamber at the next moment according to the temperature monitoring data of each battery capacity grading chamber by the temperature detection module, so as to adjust the environment temperature when each battery capacity grading chamber carries out capacity grading test on the power battery. The technical effect of improving the accuracy of the capacitance grading test of the capacitor at low cost can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of battery grading, and particularly to a power battery grading platform. Background Art

[0002] Battery grading is one of the important processes for battery quality inspection. During the battery grading test, the battery will generate a large amount of heat due to charging and discharging, and too high ambient temperature will increase the battery loss and affect the accuracy of the battery grading test. Existing battery grading devices all use a single refrigeration module to cool multiple battery grading chambers to control the ambient temperature when the battery is graded. However, a single refrigeration module cannot directly balance and adjust the ambient temperature of multiple battery grading chambers. If an independent refrigeration module is set for each battery grading chamber, the manufacturing cost of the battery grading device will be greatly increased. Summary of the Invention

[0003] Based on this, the purpose of this application is to provide a power battery grading platform, which can overcome the deficiencies of the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0005] A power battery grading platform, comprising: multiple battery grading chambers, a refrigeration module, a temperature detection module, and a control chip;

[0006] The battery grading chambers are used for grading power batteries.

[0007] The refrigeration module is respectively connected to each of the battery grading chambers;

[0008] The control chip is respectively connected to each of the battery grading chambers through the temperature detection module, and the control chip is connected to the refrigeration module; the control chip adjusts the amount of cold air output by the refrigeration module to each of the battery grading chambers at the next moment according to the temperature monitoring data of each of the battery grading chambers by the temperature detection module, so as to adjust the ambient temperature when each of the battery grading chambers grades the power battery.

[0009] As an embodiment, the control chip is connected to the refrigeration module; the control chip according to the temperature monitoring data of each of the battery grading chambers by the temperature detection module includes:

[0010] The control chip inputs the temperature detection data into a pre-trained policy model to obtain a cold air volume distribution policy;

[0011] Adjust the amount of cold air output by the refrigeration module to each of the battery grading chambers at the next moment according to the cold air volume distribution policy.

[0012] As an embodiment, the policy model is trained through the following steps:

[0013] Obtain the first temperature data samples of each battery grading chamber detected by the temperature detection module;

[0014] Input the first temperature data samples into the initial policy model to obtain the cold air distribution policy samples output by the policy model;

[0015] Input the first temperature data samples and the cold air distribution policy samples into the scoring model to obtain a policy score;

[0016] Adjust the cold air volume output by the refrigeration module for each battery grading chamber according to the cold air distribution policy samples to obtain cold air volume samples, power consumption change samples of the refrigeration module, and second temperature data samples of each battery grading chamber; wherein, the second temperature data samples are the temperature data after the refrigeration module outputs the cold air volume samples;

[0017] Obtain a policy reward according to the cold air volume samples, the power consumption change samples, and the second temperature data samples;

[0018] Obtain a target score according to the policy reward and the policy score;

[0019] Train the policy model according to the target score to obtain the policy model.

[0020] As an embodiment, the step of obtaining a policy reward according to the cold air volume samples, the power consumption change samples, and the second temperature data samples includes:

[0021] If the cold air volume samples include cold air volume data greater than the cold air distribution upper limit value or less than the cold air distribution lower limit value, determine that the policy reward is a preset negative value;

[0022] Otherwise, obtain the policy reward according to the power consumption change samples and the second temperature data samples.

[0023] As an embodiment, the step of obtaining according to the power consumption change samples and the second temperature data samples includes:

[0024] If the second temperature data samples include temperature data greater than the temperature upper limit value, determine that the policy reward is a preset negative value;

[0025] Otherwise, obtain the policy reward according to the data variance of the second temperature data samples and the power consumption change samples.

[0026] As an embodiment, the step of obtaining the policy reward according to the data variance of the second temperature data sample and the power consumption change sample includes:

[0027] Determine the difference between the reciprocal of the data variance and the power consumption change sample as the policy reward.

[0028] As an embodiment, after the step of training the policy model according to the target score to obtain the policy model, it includes:

[0029] Based on a preset training period, update the model parameters of the scoring model according to the model parameters of the policy model.

[0030] As an embodiment, the battery grading chamber is used for battery charge and discharge testing, grading the battery after the test is completed, and battery matching.

[0031] As an embodiment, it further includes a storage module, and the storage module is used to store the battery charge and discharge record data of each battery grading chamber.

[0032] As an embodiment, it further includes a display module, and the display module is used to display several battery charge and discharge record data. Compared with the prior art, the beneficial effects of the present application are:

[0033] The power battery grading platform of the present application can, through the control chip, adjust the amount of cold air output by the refrigeration module to each battery grading chamber at the next moment according to the temperature monitoring data of each battery grading chamber by the temperature detection module, so as to adjust the ambient temperature when the power battery is graded and tested in each battery grading chamber. There is no need to set up an independent refrigeration module for each battery grading chamber, which can reduce the equipment cost required for battery grading and achieve the technical effect of improving the accuracy of capacitance grading test at low cost.

[0034] For better understanding and implementation, the present application will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0035] Figure 1 It is a schematic diagram of module connection of the power battery grading platform according to an embodiment of the present application;

[0036] Figure 2 It is a schematic diagram of the equipment of the power battery grading platform according to an embodiment of the present application;

[0037] 10. Power battery grading platform; 11. Battery grading chamber; 13. Refrigeration module; 15. Temperature monitoring module; 17. Control chip. Detailed Embodiments

[0038] To make the objectives, technical solutions, and advantages of this application more clear, the following will further describe in detail the embodiments of this application in conjunction with the accompanying drawings.

[0039] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of the embodiments of this application.

[0040] When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, it should be understood that terms such as "first", "second", "third", etc. are only used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. The singular forms of "a", "the", and "said" used in this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. The word "if" / "when" used herein can be interpreted as "when...", "when...", or "in response to determination".

[0041] In addition, in the description of this application, unless otherwise stated, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0042] Please refer to Figure 1-2 , Figure 1 is a schematic diagram of module connections of a power battery grading platform 10 according to an embodiment of this application, Figure 2 is a schematic diagram of the equipment of a power battery grading platform 10 according to an embodiment of this application. The power battery grading platform 10 of this application includes: a plurality of battery grading chambers 11, a refrigeration module 13, a temperature detection module, and a control chip 17;

[0043] The battery grading chamber 11 is used to perform grading tests on power batteries;

[0044] The refrigeration module 13 is respectively connected to each of the battery grading chambers 11;

[0045] The control chip 17 is respectively connected to each of the battery grading chambers 11 through the temperature detection module, and the control chip 17 is connected to the refrigeration module 13; the control chip 17 adjusts the amount of cold air output by the refrigeration module 13 for each of the battery grading chambers 11 at the next moment according to the temperature monitoring data of each of the battery grading chambers 11 by the temperature detection module, so as to adjust the ambient temperature when each of the battery grading chambers 11 performs grading tests on power batteries.

[0046] Among them, the refrigeration module 13 is a temperature regulation module that can output air at multiple temperatures, and the refrigeration module 13 has the ability to control the output speed of the air. It can be understood that the refrigeration module 13 has the ability to blow winds at multiple temperatures and can control the wind force of the blown winds. However, at any given moment, the temperature parameter and the wind force parameter of the refrigeration module 13 are fixed, and the temperature parameter and the wind force parameter of the refrigeration module 13 can change at different times.

[0047] Among them, in a feasible embodiment, the refrigeration module 13 further includes air outlets respectively connected to each of the battery grading chambers 11. Among them, the opening and closing size of the air outlets can be controlled by the control chip 17 to achieve adjusting the amount of cold air output by the refrigeration module 13 for each of the battery grading chambers 11 at the next moment.

[0048] In a feasible embodiment, the control chip 17 is connected to the refrigeration module 13; the control chip 17, according to the temperature monitoring data of each of the battery grading chambers 11 by the temperature detection module, includes:

[0049] The control chip 17 inputs the temperature detection data into a pre-trained policy model to obtain a cold air volume distribution policy;

[0050] Adjust the amount of cold air output by the refrigeration module 13 for each of the battery grading chambers 11 at the next moment according to the cold air volume distribution policy.

[0051] In a feasible embodiment, the policy model is trained through the following steps:

[0052] Obtain the first temperature data samples detected by the temperature detection module for each of the battery grading chambers 11;

[0053] Input the first temperature data samples into an initial policy model to obtain cold air distribution policy samples output by the policy model;

[0054] Input the first temperature data samples and the cold air distribution policy samples into a scoring model to obtain a policy score;

[0055] Adjust the cold air volume output by the refrigeration module 13 to each of the battery grading chambers 11 according to the cold air distribution strategy sample, and obtain the cold air volume sample, the power consumption change sample of the refrigeration module 13, and the second temperature data sample of each of the battery grading chambers 11; wherein, the second temperature data sample is the temperature data after the refrigeration module 13 outputs the cold air volume sample.

[0056] Obtain a policy reward according to the cold air volume sample, the power consumption change sample, and the second temperature data sample.

[0057] Obtain a target score according to the policy reward and the policy score.

[0058] Train the policy model according to the target score to obtain the policy model.

[0059] In a feasible embodiment, the step of obtaining a policy reward according to the cold air volume sample, the power consumption change sample, and the second temperature data sample includes:

[0060] If the cold air volume sample includes cold air volume data greater than the cold air distribution upper limit value or less than the cold air distribution lower limit value, determine that the policy reward is a preset negative value.

[0061] Otherwise, obtain the policy reward according to the power consumption change sample and the second temperature data sample.

[0062] In a feasible embodiment, the step of according to the power consumption change sample and the second temperature data sample includes:

[0063] If the second temperature data sample includes temperature data greater than the temperature upper limit value, determine that the policy reward is a preset negative value.

[0064] Otherwise, obtain the policy reward according to the data variance of the second temperature data sample and the power consumption change sample.

[0065] In a feasible embodiment, the step of obtaining the policy reward according to the data variance of the second temperature data sample and the power consumption change sample includes:

[0066] Determine the difference between the reciprocal of the data variance and the power consumption change sample as the policy reward.

[0067] In a feasible embodiment, after the step of training the policy model according to the target score to obtain the policy model, it includes:

[0068] Based on a preset training period, update the model parameters of the scoring model according to the model parameters of the policy model.

[0069] In a feasible embodiment, the battery grading chamber 11 is used for battery charge and discharge testing, grading the batteries after the testing is completed, and battery matching.

[0070] In a feasible embodiment, it further includes a storage module, and the storage module is used to store the battery charge and discharge record data of each battery grading chamber 11.

[0071] In a feasible embodiment, it further includes a display module, and the display module is used to display a number of battery charge and discharge record data

[0072] Compared with the prior art, the power battery grading platform 10 of the present application can, through the control chip 17, according to the temperature monitoring data of each battery grading chamber 11 by the temperature detection module, adjust the amount of cold air output by the refrigeration module 13 to each battery grading chamber 11 at the next moment, so as to adjust the ambient temperature when each battery grading chamber 11 performs grading tests on power batteries. There is no need to set up an independent refrigeration module for each battery grading chamber, which can reduce the equipment cost required for battery grading and achieve the technical effect of improving the accuracy of capacitance grading tests at low cost.

[0073] The device embodiments described above are merely illustrative. The components described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of the present application. Those of ordinary skill in the art can understand and implement it without creative efforts.

[0074] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0075] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, and the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices produce means for implementing the selected functions in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks. These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the selected functions in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks.

[0076] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the selected functions in one Figure 1 flow or multiple flows and / or blocks Figure 1 block or multiple blocks.

[0077] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0078] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM), and / or non-volatile memory such as read-only memory (ROM) or flash RAM. The memory is an example of computer-readable media.

[0079] A computer-readable medium includes both permanent and non-permanent, removable and non-removable media that can implement information storage by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic tape disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer-readable medium does not include transitory computer-readable media, such as modulated data signals and carrier waves.

[0080] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising the element.

[0081] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A power battery grading platform, characterized in that, Including: Multiple battery grading chambers, a refrigeration module, a temperature detection module, and a control chip; The battery grading chamber is used for grading and testing power batteries; The refrigeration module is respectively connected to each of the battery grading chambers; The control chip is respectively connected to each of the battery grading chambers through the temperature detection module, and the control chip is connected to the refrigeration module; the control chip adjusts the cold air volume output by the refrigeration module to each battery grading chamber at the next moment according to the temperature monitoring data of each battery grading chamber by the temperature detection module, so as to adjust the ambient temperature when each battery grading chamber conducts grading and testing on the power battery.

2. The battery capacity grading platform according to claim 1, wherein The control chip is connected to the refrigeration module; the control chip according to the temperature monitoring data of each battery grading chamber by the temperature detection module includes: The control chip inputs the temperature detection data into a pre-trained policy model to obtain a cold air volume distribution policy; Adjust the cold air volume output by the refrigeration module to each battery grading chamber at the next moment according to the cold air volume distribution policy.

3. The battery capacity grading platform according to claim 2, wherein The policy model is obtained through the following steps of training: Obtain the first temperature data sample detected by the temperature detection module for each battery grading chamber; Input the first temperature data sample into the initial policy model to obtain a cold air distribution policy sample output by the policy model; Input the first temperature data sample and the cold air distribution policy sample into a scoring model to obtain a policy score; Adjust the cold air volume output by the refrigeration module to each battery grading chamber according to the cold air distribution policy sample to obtain a cold air volume sample, a power consumption change sample of the refrigeration module, and a second temperature data sample of each battery grading chamber; wherein, the second temperature data sample is the temperature data after the refrigeration module outputs the cold air volume sample; Obtain a policy reward according to the cold air volume sample, the power consumption change sample, and the second temperature data sample; Obtain a target score according to the policy reward and the policy score; Train the policy model according to the target score to obtain the policy model.

4. The power battery grading platform according to claim 3, wherein The step of obtaining a policy reward according to the cold air volume sample, the power consumption change sample, and the second temperature data sample includes: If the cold air volume sample includes cold air volume data greater than the cold air distribution upper limit value or less than the cold air distribution lower limit value, determine that the policy reward is a preset negative value; Otherwise, obtain the policy reward according to the power consumption change sample and the second temperature data sample.

5. The power battery grading and forming platform according to claim 4, wherein, The step of obtaining according to the power consumption change sample and the second temperature data sample includes: If the second temperature data sample includes temperature data greater than the temperature upper limit value, determine that the policy reward is a preset negative value; Otherwise, obtain the policy reward according to the data variance of the second temperature data sample and the power consumption change sample.

6. The power battery grading and forming platform according to claim 5, wherein, The step of obtaining the policy reward according to the data variance of the second temperature data sample and the power consumption change sample includes: Determine the reciprocal of the data variance and the difference of the power consumption change samples as the policy reward.

7. The battery capacity grading platform according to claim 3, wherein After the step of training the policy model according to the target score to obtain the policy model, it includes: Based on a preset training period, update the model parameters of the score model according to the model parameters of the policy model.

8. The power battery grading platform according to claim 1, wherein The battery grading chamber is used for battery charge and discharge testing, grading the batteries after the testing is completed, and battery grouping.

9. The power battery grading and forming platform according to claim 1, characterized in that, It further includes a storage module, and the storage module is used to store the battery charge and discharge record data of each battery grading chamber.

10. The battery grading platform according to claim 1, characterized in that, It further includes a display module, and the display module is used to display a plurality of battery charge and discharge record data.

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