Battery discharging device, discharging method, and recycling method

Abstract

The present invention relates to a battery discharging device, a discharging method, and a recycling method. A battery discharging method according to the present invention comprises the steps of: discharging at least one battery; acquiring state data of the at least one battery during the discharging; and determining whether the at least one battery is in an abnormal state on the basis of the state data.

Description

Battery discharge device, discharge method, and recycling method

[0001] The present invention relates to battery recycling, and more specifically to an apparatus and method for evaluating and diagnosing safety for recycling batteries.

[0002] In modern society, lithium-ion batteries are widely used in various fields, including eco-friendly vehicles, energy storage systems (ESS), and portable electronic devices. While lithium-ion batteries offer many advantages due to their high energy density and efficiency, they also pose a risk of fire or explosion. In particular, degradation occurring during normal use destabilizes the internal cell structure, which can increase the risk of fire and explosion during the recycling process. Since residual energy may remain within the battery, exposure to environmental factors such as physical impact, high temperatures, or overcharging increases the likelihood of a fire. Therefore, diagnosing and eliminating these fire risks in advance is essential for the safe recycling of batteries.

[0003] In particular, the battery recycling process requires separating or crushing cells. During this stage, rapid chemical reactions can occur within the battery, potentially leading to fires or explosions. Recycling batteries requires devices and systems capable of handling them safely, and specifically, diagnostic technology is needed to conduct the recycling process without the risk of fire. While some diagnostic technologies currently exist, there is still a lack of technology capable of comprehensively diagnosing the thermal and electrical conditions within the battery and identifying abnormalities.

[0004] According to one embodiment of the present invention, the purpose is to ensure that the battery recycling process is performed safely and efficiently by determining the type of subsequent crushing and grinding process based on the determination of the normal and abnormal states of the battery during the discharge process.

[0005] A battery discharge method according to the present invention for the above-described purpose comprises: a step of performing a discharge of at least one battery; a step of acquiring state data of the at least one battery during the discharge; a step of determining whether the at least one battery is in an abnormal state based on the state data; a step of determining room temperature crushing of the battery in response to the determination that the battery is in a normal state; and a step of determining cryogenic crushing of the battery in response to the determination that the battery is in an abnormal state.

[0006] In addition, the above freezing crushing decision is to crush the battery under low temperature conditions of less than 0°C.

[0007] In addition, the above low temperature condition of less than 0℃ is -70℃ or lower.

[0008] In addition, the method further includes the step of adjusting the discharge control conditions of the at least one battery based on the abnormal state of the at least one battery.

[0009] In addition, the adjustment of the discharge control conditions includes adjusting the discharge rate of the at least one battery based on an abnormal state of the at least one battery.

[0010] Additionally, the method further includes the step of identifying the type of at least one battery; the step of setting a discharge profile corresponding to the identified battery type; and the method performs the discharge of the at least one battery by applying the set discharge profile.

[0011] In addition, the adjustment of the discharge control conditions includes modifying the discharge profile based on an abnormal state of at least one battery.

[0012] Additionally, the method further includes the step of stopping the discharge of the at least one battery based on an abnormal state of the at least one battery.

[0013] The above at least one battery is a waste battery module for recycling.

[0014] A battery discharge device according to the present invention for the above-described purpose comprises: a battery connection part provided to connect at least one battery for discharge; a sensor provided to detect the voltage of the at least one battery; an abnormality detection part; and a control part. The abnormality detection part acquires state data of the at least one battery during the discharge of the at least one battery; and determines whether the at least one battery is in an abnormal state based on the state data. The control part determines room temperature crushing of the battery in response to the determination that the battery is in a normal state; and determines freezing crushing of the battery in response to the determination that the battery is in an abnormal state.

[0015] In addition, the above freezing crushing decision is to crush the battery under low temperature conditions of less than 0°C.

[0016] In addition, the above low temperature condition of less than 0℃ is -70℃ or lower.

[0017] In addition, the control unit adjusts the discharge control conditions of the at least one battery based on the abnormal state of the at least one battery.

[0018] In addition, the adjustment of the discharge control conditions includes adjusting the discharge rate of the at least one battery based on an abnormal state of the at least one battery.

[0019] Additionally, the control unit identifies the type of at least one battery; sets a discharge profile corresponding to the identified battery type; and performs the discharge of the at least one battery by applying the set discharge profile.

[0020] In addition, the adjustment of the discharge control conditions includes modifying the discharge profile based on an abnormal state of at least one battery.

[0021] In addition, the control unit stops the discharge of the at least one battery based on an abnormal condition of the at least one battery.

[0022] In addition, the above at least one battery is a waste battery module for recycling.

[0023] A battery recycling method according to the present invention for the purpose described above comprises a discharge process for discharging at least one battery; and a crushing and crushing process for crushing and crushing the at least one battery, wherein the discharge process comprises: a step of performing a discharge of at least one battery; a step of obtaining state data of the at least one battery during the discharge; a step of determining whether the at least one battery is in an abnormal state based on the state data; a step of determining room temperature crushing of the battery in response to the determination that the battery is in a normal state; and a step of determining freezing crushing of the battery in response to the determination that the battery is in an abnormal state; and wherein the crushing and crushing process comprises: a room temperature crushing step of crushing the battery at a room temperature of 0°C or higher in response to the determination of room temperature crushing; and a freezing crushing step of crushing the battery at a low temperature of less than 0°C in response to the determination of freezing crushing.

[0024] In addition, the above low temperature condition of less than 0℃ is -70℃ or lower.

[0025] According to one embodiment of the present invention, by determining the type of crushing and grinding process to be performed subsequently based on the determination of the normal and abnormal states of the battery during the discharge process, the battery recycling process can be carried out safely and efficiently, thereby contributing to efficient battery resource circulation in terms of environmental and economic aspects.

[0026] Figure 1 is a diagram showing the battery recycling process.

[0027] FIG. 2 is a drawing showing a battery discharge device according to one embodiment of the present invention.

[0028] FIG. 3 is a diagram showing a battery discharge method according to one embodiment of the present invention.

[0029] Figure 4 is a diagram showing the flow of a crushing and grinding process of a freezing crushing method according to a freezing crushing crystal in an embodiment of the present invention.

[0030] The embodiments described in this document and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various modifications that may replace the embodiments and drawings of this specification may exist at the time of filing this application.

[0031] The terms used in this document are for the purpose of describing embodiments and are not intended to limit or restrict the disclosed invention.

[0032] For example, in this specification, singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0033] In this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0034] The term "and / or" includes a combination of multiple related described components or any of the multiple related described components. For example, "A and / or B" may include only "A," only "B," or both "A and B."

[0035] Additionally, terms such as “include” or “have” are intended to express the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not exclude the additional existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0036] When it is said that a component is “connected,” “combined,” “supported,” or “in contact” with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0037] When it is said that a component is located “on” another component, this includes not only cases where one component is in contact with the other component, but also cases where another component exists between the two components.

[0038] Meanwhile, terms such as “front,” “rear,” “left,” “right,” “top,” and “bottom” used in the following description are defined based on the drawings; however, the shape and position of each component are not limited by these terms. For example, the front side may be defined as the +X side and the rear side as the -X side. For example, based on the drawings, the right side may be defined as the +Y side and the left side as the -Y side. For example, based on the drawings, the top side may be defined as the +Z side and the bottom side as the -Z side.

[0039] In addition, terms including ordinal numbers, such as "first," "second," etc., are used to distinguish one component from another and do not limit the components.

[0040] In addition, terms such as "~part," "~unit," "~block," "~part," and "~module" may refer to a unit that processes at least one function or operation. For example, the terms may refer to at least one piece of hardware such as an FPGA (Field-Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), at least one piece of software stored in memory, or at least one process processed by a processor.

[0041] At least one of the operations to be described below may be performed by a computing device and / or an operator.

[0042] A computing device may include a general-purpose processor such as a CPU, AP, DSP (Digital Signal Processor), a graphics-dedicated processor such as a GPU, VPU (Vision Processing Unit), or an artificial intelligence-dedicated processor such as an NPU.

[0043] A computing device may include a storage medium (e.g., memory) that stores at least one instruction for performing operations to be described below, at least one artificial intelligence model, etc.

[0044] However, at least one instruction and at least one artificial intelligence model may be stored in a separate device outside the computing device (e.g., a cloud computing device), and the operations described below may be performed by a processor included in the separate device outside the computing device (e.g., a cloud computing device).

[0045] A computing device may include an output device (e.g., a display) and / or an input device (e.g., a mouse, a touch panel, etc.) for performing operations to be described below.

[0046] Identical reference numbers or reference symbols presented in the attached drawings may represent parts or components that perform substantially the same function.

[0047] The operating principle and embodiments of the present invention will be described below with reference to the attached drawings.

[0048] Figure 1 is a diagram showing the battery recycling process.

[0049] When a battery's State of Health (SoH) drops below 70%, performance characteristics such as charging speed, output, and duration deteriorate significantly. SoH is a value calculated by comparing the level of performance degradation caused by increased internal resistance to the initial performance. For example, if the capacity at the time of manufacture is 100 and the current effective capacity is 60, the SoH of that battery is 60%.

[0050] Batteries are recycled through reuse or recycling methods depending on their SoH. Batteries with an SoH of 60-70% are reused as energy storage systems (ESS) or uninterruptible power supply (UPS), while batteries with a SoH lower than that are recycled to extract rare metals such as lithium, nickel, cobalt, and manganese, which are then used to manufacture new batteries.

[0051] As shown in FIG. 1, the battery recycling process consists of two stages: a pretreatment process and a posttreatment process. In FIG. 1, reference numerals 110 to 140 represent the pretreatment process, and reference numerals 150 to 180 represent the posttreatment process.

[0052] The pretreatment process includes receiving (110), discharge / deactivation process (120), sorting process after dismantling (130), crushing / grinding process (140), etc.

[0053] In the discharge and deactivation process (120), the risk of explosion is eliminated by forcibly discharging the remaining energy of the battery to deactivate it. Discharge methods include saltwater discharge, electronic load discharge, and dry recovery discharge. Saltwater discharge is a method of discharging by immersing the battery in saltwater and allowing current to flow between the positive and negative electrodes. Electronic load discharge is a method of discharging by applying a load to the battery using a load device with a settable resistance value. The present invention relates to a battery safety diagnosis in an electronic load discharge method discharge process. Dry recovery discharge is a method of recovering and reusing energy consumed during the battery discharge process.

[0054] The sorting process (130) after dismantling is a step of separating the dismantled batteries according to their physical properties by material, generally based on particle size, density, magnetic properties, etc. Through this process, metals such as iron, copper, and aluminum are separated.

[0055] The crushing and grinding process (140) is a process of crushing and grinding batteries to produce black powder, and mainly two methods are used: dry and wet.

[0056] The post-processing process includes a dry process (150) and a wet process (160). The post-processing process is a process of extracting valuable metals such as lithium, nickel, and cobalt by refining the black powder obtained from the pre-processing process. This process is broadly divided into a dry process (150) and a wet process (160). In the dry process (150), the black powder is heated to a high temperature to reduce the metal. In the wet process (160), valuable metals such as lithium, nickel, and cobalt are recovered through processes such as leaching, solvent extraction, and crystallization. The dry process (150) and the wet process (160) can be operated selectively as needed.

[0057] FIG. 2 is a drawing showing a battery discharge device according to an embodiment of the present invention. The battery discharge device (200) according to an embodiment of the present invention shown in FIG. 2 includes a multi-channel battery connection module jig (212), a discharge profile setting module (214), a receiver (216), an abnormality detection evaluation module (218), an automatic discharge and short circuit module (220), a sensor module (224), and an integrated control module (226).

[0058] The multi-channel battery connection module jig (212) is a device that allows multiple battery modules (222) to be connected and discharged simultaneously, enabling efficient discharge and diagnosis of multiple battery modules (222).

[0059] The discharge profile setting module (214) identifies each type of battery module (222) and applies a preset discharge profile suitable for the type of battery module (222) to cause the battery module (222) to discharge.

[0060] A discharge profile is data indicating how voltage and current change over time while the battery is being discharged. In other words, the discharge profile provides important information that can be used to analyze the state of the battery module (222) during the discharge process. Key elements of a discharge profile may include voltage and current, a discharge curve, depth of discharge (DoD), and discharge time. When the battery module (222) is discharged, the voltage of the battery module (222) gradually decreases over time. In the discharge profile, voltage is an indicator that can be used to determine how well the battery module (222) is being discharged or how evenly the discharge is occurring. While the battery module (222) is being discharged, the current can change as required by the battery discharge device (200). It may be discharged at a constant current, or there may be variations in current depending on the equipment used. Current is an important indicator representing the discharge characteristics of the battery module (222). A discharge curve represents the relationship between voltage and time, or current and time, while the battery module (222) is being discharged, and is used to analyze the lifespan of the battery module (222). The depth of discharge (DoD) is an indicator of how much the battery module (222) has been discharged; for example, a depth of discharge of 80% means that 80% of the capacity of the battery module (222) has been used. The deeper the depth of discharge, the shorter the lifespan of the battery module (222). The discharge time is the time it takes for the battery module (222) to be completely discharged, and a longer discharge time usually means a higher capacity. Through such a discharge profile, the lifespan, performance, and stability of the battery module (222) can be diagnosed.

[0061] The sensor module (224) is configured to detect status data of the battery module (222) in real time during the discharge of the battery module (222). The status data detected by the sensor module (224) may include the voltage, current, temperature, and humidity of the battery module (222).

[0062] The receiving unit (216) transmits the status data of the battery module (222) received from the sensor module (224) to the abnormal detection evaluation module (218).

[0063] The abnormality detection evaluation module (218) analyzes the status data of the battery module (222) transmitted from the receiver (216) to detect and evaluate the abnormal state of the battery module (222). The abnormality detection evaluation module (218) compares the set discharge profile of the battery module (222) with the measured data to determine whether they match, and evaluates whether the state of the battery module (222) currently being discharged is normal or abnormal. If the set discharge profile of the battery module (222) and the measured data do not match within the allowable error range, the state of the battery module (222) is evaluated as abnormal.

[0064] The automatic discharge and short module (220) serves to forcibly discharge or short-circuit the battery module (222). The automatic discharge and short module (220) functions to completely exhaust the remaining charge of the battery module (222), thereby reducing the risk of overheating or explosion of the battery module (222).

[0065] The integrated control module (226) controls the overall operation of the battery discharge device (200) according to an embodiment of the present invention. For example, the integrated control module (226) takes safety measures, such as ensuring that the discharge of the battery module (222) is performed normally or that the discharge is forcibly terminated, by controlling the automatic discharge and short circuit module (220) by referring to the state evaluation result of the battery module (222) transmitted from the abnormal detection evaluation module (218). In addition, the integrated control module (226) can modify the discharge profile of the discharge profile setting module (214) based on the state evaluation result of the battery module (222) received. The integrated control module (226) may be a control unit implemented as a processor.

[0066] Additionally, the integrated control module (226) can determine the type of crushing / grinding process (140) to be performed after the discharge / deactivation process (120) based on the result of the state evaluation of the battery module (222), and output the type information of the determined crushing / grinding process (140). The type information of the crushing / grinding process (140) output from the integrated control module (226) is information indicating whether the crushing / grinding process (140) will be performed as a room temperature crushing or a frozen crushing, and the crushing / grinding process (140) is performed as either a room temperature crushing or a frozen crushing according to the type information of the crushing / grinding process (140). In an embodiment of the present invention, if an abnormal state of the battery module (222) is confirmed, the type of the crushing / grinding process (140) is determined to be a frozen crushing, and a frozen crushing is performed. Conversely, if no abnormal condition is detected in the battery module (222), that is, when it is in a normal state, the type of crushing / grinding process (140) is determined to be room temperature crushing and room temperature crushing is performed.

[0067] In an embodiment of the present invention, room temperature crushing means that the battery module (222) is crushed under room temperature conditions of 0°C or higher. Alternatively, freezing crushing means that the battery module (222) is crushed under low temperature conditions of 0°C or lower. The low temperature conditions for freezing crushing may be, for example, -70°C or lower.

[0068] FIG. 3 is a diagram illustrating a battery discharge method according to an embodiment of the present invention. The battery discharge method of FIG. 3 can be executed by the device configuration of FIG. 2 as part of the discharge / deactivation process (120) of FIG. 1.

[0069] As shown in FIG. 3, the collected battery modules (222) are simultaneously connected through a multi-channel battery connection module jig (212) to create an environment where multiple battery modules (222) can be discharged simultaneously (302).

[0070] In the discharge profile setting module (214), the type of each battery module (222) is identified, and a preset discharge profile suitable for the type of battery module (222) is selected to start discharging according to the voltage conditions of the battery module (222) (304). The details regarding the discharge profile are as described above in FIG. 2.

[0071] While the battery module (222) is being discharged, each sensor module (224) collects status data of the battery module (222) in real time and transmits it to the abnormal detection evaluation module (218) through the receiver (216) (306).

[0072] The abnormality detection evaluation module (218) analyzes the status data of the battery module (222) transmitted through the receiver (216) to check the abnormal status of the battery module (222) that is being discharged (308).

[0073] If it is confirmed that an abnormal condition has occurred during discharge ('Yes' of 310), the abnormal detection evaluation module (218) immediately outputs a warning signal to the integrated control module (226) (312).

[0074] The integrated control module (226) ensures safety by stopping the discharge of the battery module (222) in response to the output of a warning signal from the abnormal detection evaluation module (218) (314).

[0075] The integrated control module (226) subsequently decides to proceed with cryogenic crushing in the crushing and grinding process (140) (316). The decision to cryogenically crush at this time is made to ensure a safe crushing and grinding process (140) through cryogenic crushing, as an abnormal condition of the battery module (222) has been confirmed. In accordance with this decision, the battery module (222) is crushed using a cryogenic crushing method in the subsequent crushing and grinding process (140).

[0076] On the other hand, if no abnormal condition occurs ('No' of 310), the battery discharge device (200) continues the normal discharge process of the battery module (222) (318).

[0077] When the discharge is terminated through a normal discharge process (318), the automatic discharge and short module (220) induces a short circuit in each section of the battery module (222) to completely release the remaining energy of the battery module (222) (320). This safely terminates the discharge of the battery module (222).

[0078] When the discharge of the battery module (222) is safely terminated, it is decided to proceed with room temperature crushing in the subsequent crushing and grinding process (140) (322). The decision to crush at room temperature at this time is made so that the battery module (222) is in a normal state where no abnormal condition is confirmed, and thus the usual crushing and grinding process (140) is performed through room temperature crushing rather than freezing crushing. In accordance with this decision, the battery module (222) is crushed in the room temperature crushing method in the subsequent crushing and grinding process (140).

[0079] In the crushing and grinding process (140) for recycling battery modules (222), an inert atmosphere plays an important role. Batteries, particularly lithium-ion batteries, contain various metals and chemicals such as lithium, cobalt, nickel, and aluminum. Since there is a risk that these chemicals may react or explode during the crushing process, an inert atmosphere is created to prevent chemical reactions. The composition of the inert atmosphere is intended to prevent chemical reactions, maintain the safety of workers and facilities, and maintain the chemical stability of the battery.

[0080] An inert atmosphere refers to an environment that minimizes the presence of, for example, oxygen or moisture, and is generally created by injecting nitrogen or argon into a sealed space. In such an environment, the battery module (222) is crushed, and gas release or chemical reactions that may occur during the process can be minimized.

[0081] Figure 4 is a diagram showing the flow of a crushing and grinding process of a freezing crushing method according to a freezing crushing crystal in an embodiment of the present invention.

[0082] As shown in FIG. 4, the outer casing of the battery module (222) is first removed (402). The outer casing of the battery module (222) is made of metal, plastic, or other materials and serves to protect the chemical substances or electrical circuits inside the battery module (222). In the recycling process, this outer casing is first removed to allow access to the available resources inside the battery module (222). The removal of the outer casing is generally performed by a mechanical method, thereby separating the recyclable parts inside the battery module (222), such as the positive electrode, negative electrode, and electrolyte. In some battery modules, the removal of the outer casing may be unnecessary, in which case the outer casing removal step can be omitted.

[0083] A battery module (222) with its outer casing removed is frozen (404). That is, the battery module (222) with its outer casing removed is frozen by exposing it to a low temperature of -70°C. Since the battery module (222) contains chemical substances such as lithium, cobalt, and nickel, it is necessary to minimize the risk of fire or explosion that may occur inside during crushing. In the present invention, by performing cryogenic crushing when an abnormal condition occurs in the battery module (222), chemical reactions inside the frozen battery module (222) are suppressed, and the risk that may occur during crushing is reduced. In addition, the cryogenic crushing process also solves the problem that the materials inside the battery are stuck together and difficult to separate. When the battery module (222) is frozen to about -70°C, the metal, plastic, and chemical substances inside the battery module (222) become discontinuous and brittle, making crushing easier. Since the battery crushed after freezing is easy to chemically separate, metals and useful materials can be extracted more efficiently during the subsequent recycling process. In other words, safe and high crushing efficiency can be achieved through cryo-crushing.

[0084] The battery module (222) is kept frozen and waited for a preset time (406). The preset time may be, for example, 36 hours. Waiting the frozen battery module (222) for about 36 hours is a process that allows the internal state of the battery module (222) to be uniformly stabilized in the frozen state. During this waiting time, the temperature of the battery module (222) is lowered evenly, thereby preventing excessive internal pressure or chemical reactions that may occur during the grinding process.

[0085] When the battery module (222) has been frozen for a preset time, the battery module (222) is crushed (408). Crushing the battery module (222) is a process of separating the cells of the frozen battery module (222) into small pieces. In this process, the recyclable materials inside the frozen battery module (222) are efficiently separated by crushing with strong mechanical force. In this process, metals, plastics, electrolytes, etc. inside the battery module (222) are separated, and each material can be subdivided in a subsequent step.

[0086] The pieces produced after crushing may still be in an unbalanced or unstable state. To stabilize them, they are placed on a tray and allowed to stabilize over time (410). A tray is a container for holding crushed materials or separated substances. This tray must be stable to temperature changes so that subsequent processes can proceed smoothly. After cryogenic crushing, the internal materials of the battery module (222) (e.g., positive electrode material, negative electrode material, electrolyte, etc.) are crushed and broken down into small pieces. At this time, if the materials are not separated or processed evenly, they may be mixed or processing efficiency may decrease during subsequent processing. Tray stabilization is intended to prevent the crushed materials from entangled with each other, or from being too finely minified or clumped together. Through tray stabilization, subsequent processing (e.g., crushing and sorting) can be performed more effectively.

[0087] Hot air drying is performed (412) to remove moisture or residual chemicals separated from the battery module (222). Since moisture or electrolyte residue may remain after cryo-crushing, drying is performed using hot air to remove them. Through hot air drying, chemicals remaining in the battery module (222) can be stabilized, and the quality and safety of resources to be recycled can be improved.

[0088] The crushed pieces of the battery module (222) are further crushed (414). In the crushing step, the remaining pieces after crushing are further crushed so that recyclable resources can be effectively separated in the subsequent sorting process. A hammer mill may be used for this purpose. A hammer mill is a device that crushes the crushed material of the battery module (222) into smaller sizes using a high-speed rotating hammer.

[0089] In the sorting stage, the crushed materials are separated according to their physical properties (416). In this process, metals, plastics, and other materials are separated using magnets, screens, density differences, etc., and finally, recyclable resources are recovered. For example, iron can be separated using magnets, and metals such as lithium, cobalt, and nickel can be distinguished using density differences. Through this sorting stage (416), recyclable resources can be accurately extracted.

[0090] Thus, in the present invention, a battery module (222) in an abnormal state can be safely and efficiently crushed and crushed through a crushing and grinding process (140) involving freezing and crushing.

[0091] The above description is merely an illustrative explanation of the technical concept, and those skilled in the art will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics without departing from the nature of the invention. Accordingly, the embodiments disclosed above and the attached drawings are intended to explain, not limit, the technical concept, and the scope of the technical concept is not limited by such embodiments and attached drawings. The scope of protection shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights.

Claims

1. A step of discharging at least one battery; A step of acquiring state data of at least one battery during the discharge; A step of determining an abnormal state of at least one battery based on the above state data; A step of determining room temperature crushing of the battery in response to the determination that the battery is in a normal state; and A battery discharge method comprising the step of determining cryo-crushing of the battery in response to the battery being determined to be in an abnormal state.

2. In Paragraph 1, A battery discharge method in which the above-mentioned cryogenic crushing decision is to crush the battery under low-temperature conditions of less than 0℃.

3. In Paragraph 2, The above low temperature condition of less than 0℃ is a battery discharge method of -70℃ or lower.

4. In Paragraph 1, A battery discharge method further comprising the step of adjusting the discharge control conditions of the at least one battery based on an abnormal state of the at least one battery.

5. In Paragraph 4, The adjustment of the above discharge control conditions is, A battery discharge method comprising adjusting the discharge rate of at least one battery based on an abnormal state of at least one battery.

6. In Paragraph 4, A step of identifying at least one type of battery; The method further includes the step of setting a discharge profile corresponding to the identified battery type, and A battery discharge method for performing a discharge of at least one battery by applying the discharge profile set above.

7. In Paragraph 6, The adjustment of the above discharge control conditions is, A battery discharge method comprising modifying the discharge profile based on an abnormal state of at least one battery.

8. In Paragraph 4, A battery discharge method further comprising the step of stopping the discharge of at least one battery based on an abnormal condition of at least one battery.

9. In Paragraph 1, A battery discharge method in which at least one of the above batteries is a waste battery module for recycling.

10. A battery connection portion provided to connect at least one battery for discharge; A sensor configured to detect the state of at least one battery; Anomaly detection unit; Includes a control unit; and The above abnormality detection unit is, Acquiring state data of the at least one battery during the discharge of the at least one battery; Determining whether the at least one battery is in an abnormal state based on the above state data; The above control unit is, In response to the determination that the battery is in a normal state, the room temperature crushing of the battery is determined; A battery discharge device that determines cryogenic crushing of the battery in response to the battery being determined to be in an abnormal state.

11. In Paragraph 10, A battery discharge device in which the above cryogenic crushing decision is to crush the battery under low temperature conditions of less than 0℃.

12. In Paragraph 11, The above low temperature condition of less than 0℃ is a battery discharge device with a temperature of -70℃ or lower.

13. In Paragraph 10, The above control unit is, A battery discharge device that adjusts the discharge control conditions of at least one battery based on an abnormal state of at least one battery.

14. In Paragraph 13, The adjustment of the above discharge control conditions is, A battery discharge device comprising adjusting the discharge rate of at least one battery based on an abnormal state of at least one battery.

15. In Paragraph 13, The above control unit is, Identifying at least one type of battery; Setting a discharge profile corresponding to the above-identified battery type; A battery discharge device that performs the discharge of at least one battery by applying the discharge profile set above.

16. In Paragraph 15, The adjustment of the above discharge control conditions is, A battery discharge device comprising modifying the discharge profile based on an abnormal state of at least one battery.

17. In Paragraph 13, The above control unit is, A battery discharge device that stops the discharge of at least one battery based on an abnormal condition of at least one battery.

18. In Paragraph 10, A battery discharge device in which at least one of the above batteries is a waste battery module for recycling.

19. A discharge process for discharging at least one battery; The method includes a crushing and grinding process for crushing and grinding at least one of the above batteries, and The above discharge process is, A step of discharging at least one battery; A step of acquiring state data of at least one battery during the discharge; A step of determining whether the at least one battery is in an abnormal state based on the above state data; A step of determining room temperature crushing of the battery in response to the determination that the battery is in a normal state; and The method includes the step of determining to freeze-shred the battery in response to the battery being determined to be in an abnormal state. The above crushing and grinding process is, A room temperature crushing step of crushing the battery at a room temperature of 0°C or higher in response to the above room temperature crushing decision; and A battery recycling method comprising: a cryo-crushing step of crushing the battery under low temperature conditions below 0°C in response to the above cryo-crushing decision.

20. In Paragraph 19, The above low temperature condition of less than 0℃ is a battery recycling method in which -70℃ or lower.

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