Information processing method, program, storage medium, information processing device, and data structure

Abstract

An information processing device 100 comprises at least an input unit 130, a processing unit 132, and an output unit 136. The input unit 130 receives, as inputs thereto, a material parameter relating to a material that constitutes a power storage device, chemical reaction data pertaining to the material when the power storage device overheats, and information pertaining to an oxygen parameter when the power storage device overheats. The processing unit 132 calculates a heat generation parameter by causing the material parameter and the information pertaining to the oxygen parameter to be reflected in the chemical reaction data. The output unit 136 outputs the heat generation parameter.

Description

Information Processing Method, Program, Storage Medium, Information Processing Apparatus, Data Structure

[0001] The present disclosure relates to information processing technology, and particularly to an information processing method, program, storage medium, information processing apparatus, and data structure for calculating overheating in a power storage device.

[0002] The temperature distribution within the power storage device due to an internal short circuit occurring within the power storage device has been evaluated by simulation. In this simulation, the amount of heat generated measured during the temperature rise of the battery is input, and the amount of heat generated is calculated from the short-circuit voltage / current behavior of the nail penetration test of the battery, thereby obtaining the temperature distribution of the battery during internal short circuit / thermal decomposition (see, for example, Patent Document 1).

[0003] Japanese Patent Application Laid-Open No. 2006-10648

[0004] The heat generation of the battery involves reactions by the constituent materials of the battery, and material design for enhancing safety is required. However, in the design of new safety materials, in addition to the development, manufacture, and performance evaluation of the device, the development, manufacture, and performance evaluation of the materials are also necessary, and the human, equipment, and time costs are extremely high. Patent Document 1 simulates the temperature distribution within the battery by inputting the amount of heat generated due to short-circuit heat generation or thermal decomposition. At that time, measured values are used for the amount of heat generated due to short-circuit heat generation or thermal decomposition. <S

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a technique for accurately predicting heat generation from materials in overheating within a power storage device.

[0006] To solve the above problems, an information processing method according to an aspect of the present disclosure includes a step of inputting material parameters regarding materials constituting a power storage device, chemical reaction data of the materials when the power storage device overheats, and information on oxygen parameters when the power storage device overheats, a step of calculating heat generation parameters by reflecting the information on the material parameters and oxygen parameters in the chemical reaction data, and a step of outputting the heat generation parameters.

[0007] Another aspect of this disclosure is also an information processing method. This method comprises the steps of inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting gas generation parameters.

[0008] Another aspect of this disclosure is a storage medium. This storage medium stores a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating an exothermic parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting the exothermic parameter.

[0009] Another aspect of this disclosure is also a storage medium. This storage medium stores a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting gas generation parameters.

[0010] Another aspect of this disclosure is an information processing device. This device includes an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating an exothermic parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting the exothermic parameter.

[0011] Another aspect of this disclosure is also an information processing device. This device includes an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating gas generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting gas generation parameters.

[0012] Another aspect of this disclosure is a data structure. This data structure comprises material parameters relating to the materials constituting the energy storage device, heat generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats, and a message indicating that the chemical reaction data of the materials was used in calculating the heat generation parameters.

[0013] Another aspect of this disclosure is also a data structure. This data structure comprises material parameters relating to the materials constituting the energy storage device, gas generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats, and a message indicating that the chemical reaction data of the materials was used in calculating the gas generation parameters.

[0014] Furthermore, any combination of the above components, as well as any conversion of the expressions of this disclosure between methods, apparatus, systems, recording media, or computer programs, are also valid forms of this disclosure.

[0015] According to this disclosure, it is possible to predict with high accuracy the heat generated from materials during overheating within an energy storage device.

[0016] This figure shows a schematic of the chemical reaction when the energy storage device according to this embodiment overheats. This figure shows the configuration of the information processing device according to this embodiment. This figure shows the configuration of the information processing system according to this embodiment. This figure shows the input screen displayed on the display device in Figure 2. This figure shows the data structure of the material parameters input to the input section in Figure 2. Figures 6(a)-(c) show the data structure of the chemical reaction data input to the input section in Figure 2. This figure shows the data structure of the oxygen release rate information input to the input section in Figure 2. Figures 8(a)-(c) show an overview of the processing in the processing section of Figure 2. This figure shows the result screen displayed on the display device in Figure 2. This is a flowchart showing the information processing procedure by the information processing device in Figure 2.

[0017] Before specifically describing the embodiments of this disclosure, an overview of the embodiments will be given. This embodiment relates to an information processing device that predicts the rate of heat generation and gas generation from the materials of a battery when the battery of an energy storage device overheats. As mentioned above, measured values ​​have been used as input for heat generation data when simulating the temperature distribution inside a battery, and prediction of heat generation data has not been done until now. In this embodiment, the behavior of heat generation and gas generation due to overheating of the battery materials is predicted from the chemical reaction equation between oxygen release from the positive electrode and reactants such as the negative electrode, separator, and electrolyte.

[0018] The embodiments described below all represent preferred specific examples of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement and connection configurations of components, as well as the steps (processes) and their order shown in the following embodiments are examples and are not intended to limit the present disclosure. Accordingly, components in the following embodiments that are not described in the independent claims representing the highest-level concepts of the present disclosure will be described as optional components. In addition, substantially identical components are denoted by the same reference numerals in each figure, and redundant explanations are omitted or simplified.

[0019] Figure 1 shows a schematic of the chemical reaction that occurs when an energy storage device overheats. The battery of the energy storage device includes a positive electrode 10, a negative electrode 20, a separator 30, and an electrolyte 60. A laminate is formed by stacking the positive electrode 10, separator 30, and negative electrode 20 in order, and the laminate is immersed in the electrolyte 60. The positive electrode 10 contains an oxide, such as a metal oxide. The negative electrode 20 contains carbon, silicon, lithium, etc. The separator 30 contains a methylene group. The separator 30 is composed of a microporous film made of polypropylene resin, for example. The separator 30 electrically insulates the positive electrode 10 and the negative electrode 20. The electrolyte 60 contains organic molecules (organic solvents).

[0020] For example, if foreign matter (not shown) is introduced into the battery, a short circuit occurs between the positive electrode 10 and the negative electrode 20 due to the foreign matter, and Joule heating is generated by the short circuit. When the positive electrode 10 is heated by Joule heating, the positive electrode 10 releases oxygen. In the oxygen distribution 70, the oxygen released from the positive electrode 10 is distributed to the negative electrode 20, the separator 30, and the electrolyte 60. In a situation 72 where there is a sufficient amount of oxygen, carbon dioxide, silicon dioxide, water, etc. are generated by chemical reactions between the negative electrode 20 and oxygen, between the separator 30 and oxygen, and between the electrolyte 60 and oxygen. Also, in a situation 74 where there is insufficient oxygen, carbon monoxide is generated. In this embodiment, the objective is to calculate the heat generation and gas generation behavior during overheating, starting from the oxygen release from the positive electrode 10.

[0021] Figure 2 shows the configuration of the information processing device 100. The information processing device 100 predicts the behavior of heat generation and gas generation due to overheating of the battery material. The information processing device 100 is connected to the operating device 110 and the display device 120, and includes an input unit 130, a processing unit 132, a storage unit 134, and an output unit 136. The operating device 110 and the display device 120 may be included in the information processing device 100.

[0022] The operating device 110 is a user interface operated by the user. The operating device 110 is, for example, a keyboard or mouse. The operating device 110 outputs the operations received from the user to the information processing device 100. The display device 120 is a display that shows a screen for inputting information used for prediction (hereinafter referred to as the "input screen"), a screen for showing the prediction results (hereinafter referred to as the "results screen"), etc. The display device 120 receives information from the information processing device 100 and displays the received information. The operating device 110 and the display device 120 may be integrated into a touch-enabled display.

[0023] The input unit 130 receives information to be used for prediction from the operating device 110. The input unit 130 may also receive information to be used for prediction from the storage unit 134.

[0024] The processing unit 132 is, for example, a CPU (Central Processing Unit), which reads programs stored in the memory unit 134 and executes them. One of the programs executed by the processing unit 132 is a prediction program. Here, the processing unit 132 displays the input screen on the display device 120, then receives information to be used for prediction from the input unit 130, and uses the received information when executing the program. The processing unit 132 also stores the prediction results in the memory unit 134 and outputs the prediction results to the output unit 136.

[0025] The storage unit 134 is a medium capable of storing electronic information, such as an HDD (Hard Disk Drive) or SSD (Solid State Drive). As described above, the storage unit 134 stores programs, especially programs and information for prediction. The storage unit 134 also stores the results of the predictions.

[0026] The output unit 136 receives the prediction results from the processing unit 132. The output unit 136 displays the prediction results as a result screen on the display device 120.

[0027] The information processing device 100 may be configured as a system. Figure 3 shows the configuration of the information processing system 150. The information processing system 150 includes a terminal device 160, a network 170, and a server 180. The terminal device 160 is an electronic device operated by a user. The terminal device 160 is, for example, a personal computer, a smartphone, or a tablet terminal. The terminal device 160 has a communication function for communicating with the network 170. The terminal device 160 corresponds to the aforementioned operating device 110 and display device 120.

[0028] Network 170 is composed of wireless communication, wired communication, and a combination of wireless and wired communication. Terminal devices 160 and server 180 are connected to network 170, and terminal devices 160 and server 180 communicate with each other via network 170. Server 180 corresponds to the aforementioned information processing device 100 and performs prediction. The following description of this embodiment will be based on the configuration in Figure 2, but this embodiment may also be implemented with the configuration in Figure 3.

[0029] The processing unit 132 displays the input screen on the display device 120. The user inputs the information to be used for prediction by operating the operating device 110 while looking at the input screen displayed on the display device 120. Figure 4 shows the input screen displayed on the display device 120. The "Positive Electrode" input contains the parameters of the positive electrode 10 (hereinafter referred to as "positive electrode parameters") and information on the oxygen release rate when the energy storage device overheats. The "Negative Electrode" input contains the parameters of the negative electrode 20 (hereinafter referred to as "negative electrode parameters") and chemical reaction data of the negative electrode 20 when the energy storage device overheats (hereinafter referred to as "negative electrode chemical reaction data").

[0030] The "Electrolyte" field receives the parameters of the electrolyte 60 (hereinafter referred to as "electrolyte parameters") and the chemical reaction data of the electrolyte 60 when the energy storage device overheats (hereinafter referred to as "electrolyte chemical reaction data"). The "Separator" field receives the parameters of the separator 30 (hereinafter referred to as "separator parameters") and the chemical reaction data of the separator 30 when the energy storage device overheats (hereinafter referred to as "separator chemical reaction data"). The positive electrode parameters, negative electrode parameters, electrolyte parameters, and separator parameters are collectively referred to as "material parameters," and the negative electrode chemical reaction data, electrolyte chemical reaction data, and separator chemical reaction data are collectively referred to as "chemical reaction data." Details of the material parameters, chemical reaction data, and oxygen release rate information will be described later. Return to Figure 2.

[0031] As described above, the material parameters, chemical reaction data, and oxygen release rate information input to the operating device 110 are output from the operating device 110 to the information processing device 100. The input unit 130 receives the material parameters, chemical reaction data, and oxygen release rate information from the operating device 110. The input unit 130 may also receive the material parameters, chemical reaction data, and oxygen release rate information from the storage unit 134.

[0032] Figure 5 shows the data structure of the material parameters input to the input unit 130. The material parameters are information about the materials constituting the energy storage device, and as mentioned above, include positive electrode parameters, negative electrode parameters, electrolyte parameters, and separator parameters. The first stage is the positive electrode parameter, the second stage is the negative electrode parameter, the third stage is the electrolyte parameter, and the fourth stage is the separator parameter. Each includes information on material composition, chemical formula, other material candidates, and abundance.

[0033] Figures 6(a)-6(c) show the data structure of the chemical reaction data input to the input unit 130. Figure 6(a) shows the negative electrode chemical reaction data. The negative electrode chemical reaction data shows the chemical reaction equation between oxygen generated from the positive electrode 10 due to overheating of the energy storage device and the negative electrode 20. Figure 6(b) shows the separator chemical reaction data. The separator chemical reaction data shows the chemical reaction equation between oxygen generated from the positive electrode 10 due to overheating of the energy storage device and the separator 30. Figure 6(c) shows the electrolyte chemical reaction data. The electrolyte chemical reaction data shows the chemical reaction equation between oxygen generated from the positive electrode 10 due to overheating of the energy storage device and the electrolyte 60.

[0034] Figure 7 shows the data structure of the oxygen release rate information input to the input unit 130. The horizontal axis represents temperature, and the vertical axis represents the oxygen release rate. This is the rate at which oxygen is released from the positive electrode 10 when the energy storage device overheats, and it is temperature-dependent. Return to Figure 2.

[0035] The processing unit 132 receives information on material parameters, chemical reaction data, and oxygen release rate from the input unit 130. Figures 8(a)-8(c) will also be used below to explain the processing of the processing unit 132. Figures 8(a)-8(c) show an overview of the processing in the processing unit 132. The processing unit 132 generates the table shown in Figure 8(a) by summarizing the received information.

[0036] Subsequently, the processing unit 132 calculates the heat generation rate by substituting the information from the table in Figure 8(a) into the heat generation rate q relation shown in Figure 8(b). Ｏ２ This indicates the oxygen release rate. The processing unit 132 calculates the exothermic rate by reflecting the material parameters and oxygen release rate information in the chemical reaction data. In doing so, the processing unit 132 changes the oxygen release rate by changing the temperature and calculates a temperature-dependent exothermic rate by reflecting the changed oxygen release rate in the chemical reaction data.

[0037] Furthermore, the processing unit 132 calculates the gas generation rate by substituting the information from the table in Figure 8(a) into the relationship equation for the gas generation rate N shown in Figure 8(c). Ｏ２This indicates the oxygen release rate. The processing unit 132 calculates the gas generation rate by reflecting the material parameters and oxygen release rate information in the chemical reaction data. At that time, the processing unit 132 changes the oxygen release rate by changing the temperature and calculates a temperature-dependent gas generation rate by reflecting the changed oxygen release rate in the chemical reaction data. Returning to Figure 2, the processing unit 132 stores the temperature-dependent heat generation rate and the temperature-dependent gas generation rate as prediction results in the storage unit 134 and outputs them to the output unit 136.

[0038] As described above, the output unit 136 displays the prediction results as a result screen on the display device 120. That is, the temperature-dependent heat generation rate and the temperature-dependent gas generation rate are displayed on the display device 120. Figure 9 shows the result screen displayed on the display device 120. The result screen shows the heat generation rate graph 200, the gas generation rate graph 202, and message 204. The heat generation rate graph 200 shows the temperature-dependent heat generation rate, with the horizontal axis representing temperature and the vertical axis representing the heat generation rate. The gas generation rate graph 202 shows the temperature-dependent gas generation rate, with the horizontal axis representing temperature and the vertical axis representing the heat generation rate. Message 204 states, "Calculated using chemical reaction equations," which indicates that chemical reaction data of the material is used to calculate the heat generation rate and gas generation rate. The expression of message 204 is not limited to this.

[0039] In the above description, the oxygen release rate, heat generation rate, and gas generation rate may be elevated to higher-level concepts such as oxygen parameter, heat generation parameter, and gas generation parameter. The oxygen parameter, heat generation parameter, and gas generation parameter may include, for example, the amount of oxygen released, the amount of heat generated, and the amount of gas generated, respectively. In particular, the input unit 130 receives at least one of the oxygen release rate and the amount of oxygen released as input, and the output unit 136 outputs the heat generation rate and the amount of heat generated, as well as the gas generation rate and the amount of gas generated.

[0040] The subject of the apparatus, system, or method in this disclosure comprises a computer. The functions of the subject of the apparatus, system, or method in this disclosure are realized by the computer executing a program. The computer comprises a processor as its main hardware component, which operates according to the program. The processor is of any type as long as it can realize its functions by executing the program. The processor consists of one or more electronic circuits, including semiconductor integrated circuits (ICs) or LSIs (Large Scale Integrations). Multiple electronic circuits may be integrated on one chip or provided on multiple chips. Multiple chips may be aggregated in one device or provided on multiple devices. The program is recorded on a non-temporary recording medium such as ROM, optical discs, or hard disk drives that can be read by the computer. The program may be pre-stored on the recording medium or supplied to the recording medium via a wide-area communication network, including the Internet.

[0041] The operation of the information processing device 100 with the above configuration will now be explained. Figure 10 is a flowchart showing the information processing procedure by the information processing device 100. The input unit 130 receives information on material parameters, chemical reaction data, and oxygen release rate (S10). The processing unit 132 calculates the prediction result based on the chemical reaction data (S12). The storage unit 134 stores the prediction result (S14). The output unit 136 outputs the prediction result (S16).

[0042] When calculating the gas generation rate, the result of calculating the heat generation rate may be used. For example, when calculating the gas generation rate, in S12 of Figure 10, the processing unit 132 calculates the heat generation rate (predicted result), then returns to S10 to calculate the gas generation rate, and in S10, when inputting the oxygen release rate, information that takes the heat generation rate into account may be input. Since the oxygen release rate is temperature-dependent, considering the heat generation rate leads to accurate prediction. In other words, when updating the gas generation rate after calculating the heat generation rate, the process is looped from S12 to S10 in Figure 10.

[0043] According to this embodiment, by changing the temperature to change the oxygen release rate and reflecting the changed oxygen release rate and material parameters in the chemical reaction data, the heat generation rate having temperature dependence is calculated, so that the heat generation from the material in the overheat of the power storage device can be predicted with high accuracy. Further, by changing the temperature to change the oxygen release rate and reflecting the changed oxygen release rate and material parameters in the chemical reaction data, the gas generation rate having temperature dependence is calculated, so that the gas generation from the material in the overheat of the power storage device can be predicted with high accuracy.

[0044] Further, since the chemical reaction data of the material includes the chemical reactions of the oxygen generated from the positive electrode due to the overheat of the power storage device with the negative electrode, the separator, and the electrolytic solution, respectively, the chemical reaction can be accurately reflected. Further, an input screen for inputting material parameters is displayed, and a result screen showing the heat generation rate having temperature dependence and the gas generation rate having temperature dependence is displayed, so that the operability of the user can be improved. Further, the result screen includes a message indicating that the chemical reaction data of the material is used for the calculation of the heat generation rate and the gas generation rate, so that the prediction conditions can be notified.

[0045] The outline of one aspect of the present disclosure is as follows. (Item 1) A step of inputting material parameters related to the materials constituting the power storage device, chemical reaction data of the materials when the power storage device overheats, and information on oxygen parameters when the power storage device overheats; A step of calculating a heat generation parameter by reflecting the material parameter and the information on the oxygen parameter in the chemical reaction data; A step of outputting the heat generation parameter; An information processing method comprising:

[0046] (Item 2) The information on the oxygen parameter input in the step of inputting has temperature dependence, and the step of calculating the heat generation parameter changes the oxygen parameter by changing the temperature and calculates the heat generation parameter having temperature dependence by reflecting the changed oxygen parameter in the chemical reaction data. The step of outputting the heat generation parameter is the information processing method according to Item 1 that outputs the heat generation parameter having temperature dependence.

[0047] (Item 3) The oxygen parameter is at least one of the oxygen release rate and the oxygen release amount, and the heat generation parameter is the heat generation rate and the heat generation amount. The information processing method according to Item 1.

[0048] (Item 4) A step of inputting a material parameter regarding a material constituting a power storage device, chemical reaction data of the material when the power storage device overheats, and information on an oxygen parameter when the power storage device overheats; a step of calculating a gas generation parameter by reflecting the material parameter and the information on the oxygen parameter in the chemical reaction data; and a step of outputting the gas generation parameter. An information processing method comprising the steps.

[0049] (Item 5) The step of calculating the gas generation parameter changes the oxygen parameter by changing the temperature and calculates the gas generation parameter having temperature dependence by reflecting the changed oxygen parameter in the chemical reaction data. The step of outputting the gas generation parameter is the information processing method according to Item 4 that outputs the gas generation parameter having temperature dependence.

[0050] (Item 6) The oxygen parameter is at least one of the oxygen release rate and the oxygen release amount, and the gas generation parameter is the gas generation rate and the gas generation amount. The information processing method according to Item 4.

[0051] (Item 7) The energy storage device includes a positive electrode, a negative electrode, a separator, and an electrolyte, the material parameters include parameters for each of the positive electrode, negative electrode, separator, and electrolyte, and the chemical reaction data of the materials includes the chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the negative electrode, the chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the separator, and the chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the electrolyte, as described in any one of items 1 to 6.

[0052] (Item 8) The information processing method according to Item 1, further comprising the step of displaying a first screen for inputting the material parameters, wherein the output step is to display a second screen showing the heat generation parameters.

[0053] (Item 9) The information processing method according to Item 4, further comprising the step of displaying a first screen for inputting the material parameters, wherein the output step is to display a second screen showing the gas generation parameters.

[0054] (Item 10) A program for causing a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating an exothermic parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting the exothermic parameter.

[0055] (Item 11) A program for causing a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameters and oxygen parameter information in the chemical reaction data; and outputting the gas generation parameters.

[0056] (Item 12) A storage medium for storing a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating a heat generation parameter by reflecting the information of the material parameters and the oxygen parameter in the chemical reaction data; and outputting the heat generation parameter.

[0057] (Item 13) A storage medium for storing a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameters and oxygen parameter information in the chemical reaction data; and outputting the gas generation parameters.

[0058] (Item 14) An information processing device comprising: an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating heat generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting the heat generation parameters.

[0059] (Item 15) An information processing device comprising: an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating gas generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting the gas generation parameters.

[0060] (Item 16) A data structure comprising: material parameters relating to the materials constituting the energy storage device; heat generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats; and a message indicating that the chemical reaction data of the materials was used in calculating the heat generation parameters.

[0061] (Item 17) A data structure comprising: material parameters relating to the materials constituting the energy storage device; gas generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats; and a message indicating that the chemical reaction data of the materials was used in calculating the gas generation parameters.

[0062] (Item 18) The information processing method according to Item 1, further comprising the steps of: calculating gas generation parameters by reflecting the material parameters and oxygen parameters in the chemical reaction data; and outputting the gas generation parameters.

[0063] The present disclosure has been described above based on examples. These examples are illustrative, and it will be understood by those skilled in the art that various modifications are possible for each component or combination of processing steps, and that such modifications are also within the scope of the present disclosure.

[0064] According to this disclosure, it is possible to predict with high accuracy the heat generated from materials during overheating within an energy storage device.

[0065] 10 Positive electrode, 20 Negative electrode, 30 Separator, 60 Electrolyte, 70 Oxygen distribution, 72 Sufficient oxygen present, 74 Oxygen deficient, 100 Information processing device, 110 Operating device, 120 Display device, 130 Input unit, 132 Processing unit, 134 Storage unit, 136 Output unit, 150 Information processing system, 160 Terminal device, 170 Network, 180 Server, 200 Heat generation rate graph, 202 Gas generation rate graph, 204 Message.

Claims

1. An information processing method comprising: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating an exothermic parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting the exothermic parameter.

2. The information processing method according to claim 1, wherein the information of the oxygen parameter input in the input step is temperature-dependent, the step of calculating the exothermic parameter is to change the oxygen parameter by changing the temperature, and to calculate the temperature-dependent exothermic parameter by reflecting the changed oxygen parameter in the chemical reaction data, and the step of outputting the exothermic parameter is to output the temperature-dependent exothermic parameter.

3. The information processing method according to claim 1 or 2, wherein the oxygen parameter is at least one of the oxygen release rate and the amount of oxygen released, and the heat generation parameter is the heat generation rate and the amount of heat generated.

4. An information processing method comprising: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameters and oxygen parameter information in the chemical reaction data; and outputting the gas generation parameters.

5. The information processing method according to claim 4, wherein the step of calculating the gas generation parameters is to change the oxygen parameter by changing the temperature, and to calculate the temperature-dependent gas generation parameters by reflecting the changed oxygen parameter in the chemical reaction data, and the step of outputting the gas generation parameters is to output the temperature-dependent gas generation parameters.

6. The information processing method according to claim 4 or 5, wherein the oxygen parameter is at least one of the oxygen release rate and the amount of oxygen released, and the gas generation parameter is the gas generation rate and the amount of gas generated.

7. The information processing method according to any one of claims 1 to 6, wherein the energy storage device includes a positive electrode, a negative electrode, a separator, and an electrolyte, the material parameters include parameters for each of the positive electrode, negative electrode, separator, and electrolyte, and the chemical reaction data of the materials includes a chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the negative electrode, a chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the separator, and a chemical reaction between oxygen generated from the positive electrode due to overheating of the energy storage device and the electrolyte.

8. The information processing method according to claim 1, further comprising the step of displaying a first screen for inputting the material parameters, wherein the output step is to display a second screen showing the heat generation parameters.

9. The information processing method according to claim 4, further comprising the step of displaying a first screen for inputting the material parameters, wherein the output step is to display a second screen showing the gas generation parameters.

10. A program for causing a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating an exothermic parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting the exothermic parameter.

11. A program for causing a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameters and oxygen parameter information in the chemical reaction data; and outputting the gas generation parameters.

12. A storage medium for storing a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating a heat generation parameter by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and outputting the heat generation parameter.

13. A storage medium for storing a program that causes a computer to perform the following steps: inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; calculating gas generation parameters by reflecting the material parameters and oxygen parameter information in the chemical reaction data; and outputting the gas generation parameters.

14. An information processing device comprising: an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating heat generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting the heat generation parameters.

15. An information processing device comprising: an input unit for inputting material parameters relating to the materials constituting the energy storage device, chemical reaction data of the materials when the energy storage device overheats, and oxygen parameter information when the energy storage device overheats; an input unit for calculating gas generation parameters by reflecting the material parameter and oxygen parameter information in the chemical reaction data; and an output unit for outputting the gas generation parameters.

16. A data structure comprising: material parameters relating to the materials constituting the energy storage device; heat generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats; and a message indicating that the chemical reaction data of the materials was used in calculating the heat generation parameters.

17. A data structure comprising: material parameters relating to the materials constituting the energy storage device; gas generation parameters calculated by a computer by reflecting information on oxygen parameters when the energy storage device overheats in the chemical reaction data of the materials when the energy storage device overheats; and a message indicating that the chemical reaction data of the materials was used in calculating the gas generation parameters.

18. The information processing method according to claim 1, further comprising the steps of: calculating gas generation parameters by reflecting the material parameters and oxygen parameters in the chemical reaction data; and outputting the gas generation parameters.

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