Automatic detection device and method suitable for waste battery capacity

Abstract

The invention relates to the field of waste battery recovery, in particular to an automatic detection device and method suitable for the capacity of a waste battery, and the device comprises a capacity detection bin, a first detection bin, a second detection bin and a preorder detection bin. The detection control system is composed of a capacity detection unit, a repair detection module, a repair judgment module and a repair marking unit; when the waste batteries are recycled, the waste batteries are classified for the first time according to the capacity of the waste batteries, and the classified waste batteries are subjected to dynamic repair parameter detection and repair cost accounting again, so that secondary classification of step recycling of the waste batteries is realized; and the detection efficiency and the detection accuracy of the dynamic performance and the static performance of the waste battery are improved.

Description

Technical Field

[0001] The present invention relates to the field of waste battery recycling, and specifically to an automated detection device and method suitable for the capacity of waste batteries. Background Art

[0002] The stepped utilization of lithium batteries refers to the recycling method of disassembling, detecting, screening and recombining waste power lithium battery packs or battery cells into healthy battery packs or battery systems for reuse. This utilization method is mainly applicable to retired power batteries with a battery capacity between 20% and 80%, and is usually used in scenarios with relatively low battery performance requirements such as power grid peak shaving and frequency modulation, wind and light energy storage, and low-speed electric vehicles;

[0003] Currently, a battery recycling detection solution is disclosed in Chinese Patent CN108598606B, which preliminarily detects the voltage, internal resistance, temperature, and capacitance of a waste battery module in multiple aspects to judge the current performance of the battery, realizes the stepped recycling utilization of the waste battery module, and through detection and repair for secondary utilization, greatly saves social investment and resources;

[0004] However, the detection methods for waste batteries in this solution are all based on the static detection of waste batteries, such as detecting parameters such as the temperature, internal resistance, and voltage of the waste battery during operation. In actual use, the performance defects of the battery are more manifested in the dynamic operation process of the battery, such as the temperature performance of the battery during long-term operation or under the interference of environmental factors, as well as the performance of the battery capacity at different temperatures and the change range of the battery output parameters with the capacitance. Therefore, the static detection method cannot fully cover the scenarios of battery recycling and use, which will cause problems such as insufficient dynamic adaptability performance after the secondary utilization of the battery, greatly affecting the use performance. At the same time, the repair and utilization costs of waste batteries are not analyzed, resulting in the impact on the enterprise benefits and greatly affecting the progress of waste battery recycling work;

[0005] In view of the above technical problems, the present application proposes a solution. Summary of the Invention

[0006] When recycling waste batteries, the present invention classifies the waste batteries for the first time according to the capacity of the waste batteries, and then conducts dynamic repair parameter detection and repair cost accounting on the classified waste batteries to achieve the second classification of the stepped recycling utilization of the waste batteries. According to the multi-level classification, when improving the stepped recycling utilization of waste batteries, the detection efficiency and detection accuracy of the dynamic performance and static performance of waste batteries are improved, the economic benefits during the subsequent repair of waste batteries and the utilization effect of the repaired batteries are improved, so that the recycling ratio and economic benefits are balanced, in order to solve the technical defects proposed in the background art, and an automated detection device and method suitable for the capacity of waste batteries are proposed.

[0007] The object of the present invention can be achieved by the following technical solutions: An automatic detection device applicable to the capacity of waste batteries, including a feeding belt, on one side of which there are a first discharge belt and a second discharge belt. The ends of the first discharge belt and the second discharge belt are connected to the recycling workshop, the end of the feeding belt is connected with an end discharge belt, and the end of the end discharge belt is connected to the repair workshop;

[0008] A capacity detection bin is installed at the position of the feeding belt in front of the first discharge belt, and a pre-detection bin, a first detection bin and a second detection bin are successively installed at the position of the feeding belt between the first discharge belt and the second discharge belt;

[0009] Steering platforms are installed at the positions where the first discharge belt and the second discharge belt are connected to the feeding belt, and the bottom of the steering platform can rotate under the control of the automatic detection system;

[0010] The automatic detection system includes a capacity detection unit, a repair detection module, a repair judgment module and a repair marking unit.

[0011] As a preferred embodiment of the present invention, the capacity detection bin detects the capacity of the waste battery, the first detection bin and the second detection bin detect the repair parameters of the waste battery, and different temperature conditions are maintained inside the first detection bin and the second detection bin through a temperature control component;

[0012] The automatic detection system is integrated in the control panel. In addition to being connected to the steering platform, the control panel is also connected to the first detection bin, the second detection bin, the capacity detection bin, the feeding belt and the end discharge belt.

[0013] As a preferred embodiment of the present invention, the capacity detection unit detects the capacity of the waste battery through the capacity detection bin, obtains the current capacity of the battery, and compares the current capacity of the battery with the set capacity levels. The set capacity levels include a utilization level and a scrapping level. If the current capacity of the battery is greater than the set utilization level, the waste battery is marked as an available battery. If the current capacity of the battery is between the utilization level and the scrapping level, the waste battery is marked as a repairable battery. If the current capacity of the battery is less than the scrapping level, the waste battery is marked as a scrapped and disassembled battery.

[0014] As a preferred embodiment of the present invention, the repair detection module includes a temperature adaptation unit and an electrical parameter detection unit. The temperature adaptation unit analyzes the temperature adaptation situation of the waste battery. The specific analysis method is as follows:

[0015] The temperature adaptation unit performs charge and discharge operations on the waste battery at the maximum power through the previous detection bin. During the charge and discharge operations of the waste battery, the temperature of the waste battery is collected, and the battery operating temperature and operating time are calculated to obtain the operating temperature rise rate.

[0016] After the waste battery stops operating, the temperature adaptation unit collects the temperature of the waste battery and the heat dissipation duration to obtain the battery temperature drop rate.

[0017] As a preferred embodiment of the present invention, the temperature adaptation unit performs a full discharge operation on the battery at different operating ambient temperatures, conducts electrical energy statistics on the discharge process of the battery, records the smallest group among the capacities of multiple groups of waste batteries as the temperature interference capacity, and calculates the difference between the temperature interference capacity and the battery capacity obtained by the capacity detection unit to obtain the capacity adaptation change.

[0018] As a preferred embodiment of the present invention, during the discharge operation of the waste battery by the electrical parameter detection unit, the electrical parameters of the waste battery are continuously collected, where the electrical parameters include voltage output and current output. The electrical parameter detection unit statistically analyzes the collected voltage output and current output and plots a voltage output curve and a current output curve in a plane coordinate system.

[0019] The electrical parameter detection unit selects any two points on the voltage output curve, where the difference between the abscissas corresponding to the two points is a preset fixed value. The electrical parameter detection unit calculates the difference between the voltage outputs of the selected two points to obtain the unit voltage reduction value.

[0020] Similarly, the electrical parameter detection unit obtains the unit current reduction value on the current output curve in the same way.

[0021] As a preferred embodiment of the present invention, the repair detection module sends the repair parameters to the repair judgment module.

[0022] The repair judgment module includes a parameter judgment unit and a cost judgment unit.

[0023] The parameter judgment unit performs threshold analysis on the repair parameters. If the operating temperature rise rate is greater than the set threshold, a temperature rise rate repair signal is generated. If the battery temperature drop rate is less than the set threshold, a temperature drop rate repair signal is generated. If the battery temperature drop rate is not less than the set threshold, a temperature drop rate normal signal is generated.

[0024] If the capacity adaptation change is greater than the set threshold, a capacity change repair signal is generated.

[0025] If the unit current reduction value is greater than the set threshold, or the unit voltage reduction value is greater than the set threshold, an electrical parameter repair signal is generated.

[0026] As a preferred embodiment of the present invention, the cost judgment unit statistically analyzes the heating rate repair signal, the cooling rate repair signal, the capacity change repair signal, and the electrical parameter repair signal, increases the preset minimum cost according to each different repair signal to obtain the repair cost. If the repair cost is greater than the set cost threshold, the waste battery is marked as a scrapped battery; if the repair cost is not greater than the set cost threshold, the waste battery is marked as a repaired battery.

[0027] The present invention also provides an automated detection method applicable to the capacity of waste batteries, including the following steps: battery capacity detection, repair parameter detection, repair cost estimation, repaired battery classification, and battery classification and transportation.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. When the waste batteries are recycled in the present invention, they are first classified according to the capacity of the waste batteries, and then the classified waste batteries are dynamically detected for repair parameters and the repair cost is calculated again, so as to realize the second classification of the stepped recycling of waste batteries. According to the multi-level classification, the detection efficiency and accuracy of the dynamic and static performance of waste batteries during the stepped recycling of waste batteries are improved, the economic benefits during the subsequent repair of waste batteries and the utilization effect of the repaired batteries are improved, and the recycling ratio and economic benefits are balanced.

[0030] 2. In the present invention, when detecting the dynamic performance of waste batteries, by collecting the dynamic heating performance and cooling performance of the waste batteries during the operation of the waste batteries, the temperature change of the waste batteries under the operating state is analyzed. By operating the battery under different external environments and collecting the battery operation parameters, the operating effect of the waste battery under the interference of environmental factors is realized. At the same time, when the waste battery is operating as described above, the output parameters of the waste battery are synchronously collected, so as to dynamically analyze the relationship between the output parameters of the waste battery and the battery power, improving the scientificity and comprehensiveness of the data for detecting waste batteries.

[0031] 3. In the present invention, by statistically analyzing the detection results during the detection of waste batteries and preliminarily estimating the repair cost of the waste batteries according to the detection results, the cost consumption and recycling benefits of battery repair and utilization are balanced, improving the economy during battery recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0033] Figure 1 It is the front view structural schematic diagram of the present invention;

[0034] Figure 2 is the system flow chart of the present invention;

[0035] Figure 3 is the block diagram of the repair detection module of the present invention;

[0036] Figure 4 is the block diagram of the repair judgment module of the present invention

[0037] Figure 5 is the method flow chart of the present invention.

[0038] In the figure: 1. Feeding belt; 2. First discharging belt; 3. Second discharging belt; 4. End discharging belt; 5. Capacity detection bin; 6. First detection bin; 7. Second detection bin; 8. Turntable; 9. Pre - detection bin. Specific embodiments

[0039] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0040] Embodiment 1: Please refer to Figure 1 - Figure 5 As shown, an automated detection device applicable to the capacity of waste batteries includes a feeding belt 1. A first discharging belt 2 and a second discharging belt 3 are arranged on one side of the feeding belt 1. The ends of the first discharging belt 2 and the second discharging belt 3 are connected to the recycling workshop, which is used to transport the scrapped batteries to the recycling workshop. The end of the feeding belt 1 is connected to an end discharging belt 4, and the end of the end discharging belt 4 is connected to the repair workshop, which is used to transport the repaired batteries to the repair workshop;

[0041] A capacity detection bin 5 is installed at the position of the feeding belt 1 in front of the first discharging belt 2. A pre - detection bin 9, a first detection bin 6 and a second detection bin 7 are successively installed at the position of the feeding belt 1 between the first discharging belt 2 and the second discharging belt 3. The capacity detection bin 5 is in contact with the waste battery through an electrode interface inside to detect the capacity of the waste battery;

[0042] Electrode interfaces are also arranged inside the first detection bin 6 and the second detection bin 7 to detect the repair parameters of the waste battery. And the temperature inside the first detection bin 6 and the second detection bin 7 is maintained at different conditions through a temperature control component. Heat - insulating rubber curtains are installed on both sides of the first detection bin 6 and the second detection bin 7 to reduce the energy consumption of the first detection bin 6 and the second detection bin 7;

[0043] Steering platforms 8 are installed at the connection positions of the first discharge belt 2 and the second discharge belt 3 with the feed belt 1. The bottom of the steering platform 8 can rotate under the control of the automated detection system to control the flow direction of waste batteries. The automated detection system is integrated in the control panel. In addition to being connected to the steering platform 8, the control panel is also connected to the first detection bin 6, the second detection bin 7, the capacity detection bin 5, the feed belt 1, and the end discharge belt 4;

[0044] The automated detection system includes a capacity detection unit, a repair detection module, a repair judgment module, and a repair marking unit. The capacity detection unit detects the capacity of waste batteries through the capacity detection bin, obtains the current battery capacity, compares the current battery capacity with the set capacity levels, and the set capacity levels include a utilization level and a scrapped level;

[0045] If the current battery capacity is greater than the set utilization level, the waste battery is marked as an available battery. If the current battery capacity is between the utilization level and the scrapped level, the waste battery is marked as a repairable battery. If the current battery capacity is less than the scrapped level, the waste battery is marked as a scrapped and disassembled battery;

[0046] For example, if the set capacity levels are set to 40% and 60% of the maximum capacity, if the current battery capacity is greater than 60%, it is an available battery. If the current battery capacity is between 40% and 60%, it is marked as a repairable battery. If the current battery capacity is less than 40%, it is marked as a scrapped and disassembled battery;

[0047] The capacity detection unit recycles the waste batteries marked as scrapped and disassembled. That is, when the waste batteries marked as scrapped and plugged pass through the steering platform 8, the steering platform 8 rotates to face the first discharge belt 2 to recycle the marked waste batteries, and sends the waste batteries marked as available batteries and repairable batteries to the first detection bin 6 and the second detection bin 7 controlled by the repair detection module;

[0048] The repair detection module includes a temperature adaptation unit and an electrical parameter detection unit. The temperature adaptation unit analyzes the temperature adaptation of waste batteries. The specific analysis method is as follows:

[0049] The temperature adaptation unit charges and discharges the waste batteries at the maximum power through the pre-sequence detection bin 9. During the charging and discharging operation of the waste batteries, the temperature of the waste batteries is collected to obtain the battery operating temperature. The temperature adaptation unit calculates the battery operating temperature and the operating time to obtain the operating temperature rise rate;

[0050] After the operation time of the waste battery reaches the set time threshold, the temperature adaptation unit stops the operation of the waste battery, enabling the waste battery to dissipate heat passively in a static state. During the passive heat dissipation process of the waste battery, the temperature of the waste battery and the heat dissipation duration are collected to obtain the battery cooling rate.

[0051] The temperature adaptation unit operates in the first detection bin 6 and the second detection bin 7 with two different environmental conditions to change the operating environmental temperature of the waste battery. And the battery is fully discharged under different operating environmental temperatures, and the electric energy during the discharge process of the battery is statistically analyzed to obtain multiple sets of capacities of the waste battery. The smallest set among the multiple sets of capacities of the waste battery is recorded as the temperature interference capacity, and the difference between the temperature interference capacity and the battery capacity obtained by the capacity detection unit is calculated to obtain the capacity adaptation change.

[0052] During the process of the electrical parameter detection unit discharging the waste battery, the electrical parameters of the waste battery are continuously collected, where the electrical parameters include voltage output and current output. The electrical parameter detection unit statistically analyzes the collected voltage output. The electrical parameter detection unit creates a two-y-axis plane coordinate system with the current remaining power percentage of the waste battery as the horizontal axis and the voltage output and current output as the vertical axes, and plots the voltage output curve and the current output curve in the plane coordinate system.

[0053] The electrical parameter detection unit selects any two points on the voltage output curve, where the difference between the abscissas corresponding to the two points is a preset fixed value. The electrical parameter detection unit calculates the difference between the voltage outputs of the selected two points to obtain the unit voltage reduction value.

[0054] Similarly, the electrical parameter detection unit obtains the unit current reduction value on the current output curve in the same way.

[0055] Embodiment 2: Please refer to Figure 1 - Figure 5 As shown, the repair detection module sends the operating heating rate, the battery cooling rate, the capacity adaptation change, and the unit current reduction value and the unit voltage reduction value to the repair judgment module.

[0056] The repair judgment module includes a parameter judgment unit and a cost judgment unit.

[0057] Among them, the parameter judgment unit performs threshold analysis on the operating heating rate. If the operating heating rate is greater than the set threshold, a heating rate repair signal is generated; if the operating heating rate is not greater than the set threshold, a heating rate normal signal is generated.

[0058] The parameter judgment unit performs threshold analysis on the battery cooling rate. If the battery cooling rate is less than the set threshold, a cooling rate repair signal is generated; if the battery cooling rate is not less than the set threshold, a normal cooling rate signal is generated.

[0059] The parameter judgment unit performs threshold analysis on the capacity adaptation change. If the capacity adaptation change is greater than the set threshold, a capacity change repair signal is generated.

[0060] The parameter judgment unit compares the unit current reduction value and the unit voltage reduction value with the set threshold respectively. If the unit current reduction value is greater than the set threshold, or the unit voltage reduction value is greater than the set threshold, an electrical parameter repair signal is generated.

[0061] The cost judgment unit counts the heating rate repair signal, the cooling rate repair signal, the capacity change repair signal, and the electrical parameter repair signal, increases the preset minimum cost according to each different repair signal, and records the increased minimum cost as the repair cost. If the repair cost is greater than the set cost threshold, the waste battery is marked as a scrapped battery; if the repair cost is not greater than the set cost threshold, the waste battery is marked as a repaired battery, and the repaired battery mark is sent to the repair marking unit.

[0062] Embodiment 3: Please refer to Figure 1 - Figure 5 As shown in the figure, the present invention also proposes an automatic detection method applicable to the capacity of waste batteries, including the following steps:

[0063] Step 1: Automatically detect the capacity of the waste battery, and mark the waste battery as a scrapped battery, a repairable battery, and an available battery according to the detection results.

[0064] Step 2: Send the scrapped battery to the recycling workshop, and perform repair detection on the repairable battery and the available battery to obtain the temperature performance, current performance, and temperature adaptation performance of the waste battery.

[0065] Step 3: Judge the obtained repair detection signal, and estimate the repair cost according to the repair detection signal.

[0066] Step 4: Mark the waste battery as a scrapped battery or a repaired battery according to the repair cost.

[0067] Step 5: Send the scrapped battery to the recycling workshop, and send the repaired battery to the repair workshop.

[0068] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An automated detection device for the capacity of waste batteries, comprising a feed belt (1), characterized in that: A first discharge belt (2) and a second discharge belt (3) are provided on one side of the feed belt (1), the ends of the first discharge belt (2) and the second discharge belt (3) are connected to a recycling workshop, and the end of the feed belt (1) is connected to an end discharge belt (4), and the end of the end discharge belt (4) is connected to a repair workshop; The feed belt (1) is provided with a capacity detection bin (5) at a position in front of the first discharge belt (2), and the feed belt (1) is provided with a preceding detection bin (9), a first detection bin (6) and a second detection bin (7) in sequence at a position between the first discharge belt (2) and the second discharge belt (3); A turning platform (8) is installed at the position where the first discharge belt (2) and the second discharge belt (3) are connected to the feed belt (1), and the bottom of the turning platform (8) can rotate under the control of an automated detection system; The automatic detection system includes a capacity detection unit, a repair detection module, a repair judgment module and a repair marking unit.

2. The automatic detection device for the capacity of waste batteries according to claim 1 is characterized in that: The capacity detection chamber (5) detects the capacity of the waste battery, the first detection chamber (6) and the second detection chamber (7) detect the repair parameters of the waste battery, and the first detection chamber (6) and the second detection chamber (7) maintain different temperatures inside through a temperature control component; The automated detection system is integrated in a control panel, which is connected to the turning platform (8) as well as the first detection bin (6), the second detection bin (7), the capacity detection bin (5), the feed belt (1), and the end discharge belt (4).

3. The automatic detection device for the capacity of waste batteries according to claim 2 is characterized in that: The capacity detection unit detects the capacity of the waste battery through the capacity detection bin, obtains the current capacity of the battery, and compares the current capacity of the battery with a set capacity gear, wherein the set capacity gear includes a utilization gear and a scrap gear. If the current capacity of the battery is greater than the set utilization gear, the waste battery is marked as a usable battery; if the current capacity of the battery is between the utilization gear and the scrap gear, the waste battery is marked as a repairable battery; if the current capacity of the battery is less than the scrap gear, the waste battery is marked as a scrapped and disassembled battery.

4. The automatic detection device for the capacity of waste batteries according to claim 3 is characterized in that: The repair detection module includes a temperature adaptation unit and an electrical parameter detection unit. The temperature adaptation unit analyzes the temperature adaptation of the waste battery. The specific analysis method is: The temperature adaptation unit charges and discharges the waste battery at maximum power through the preceding detection chamber (9), collects the temperature of the waste battery during the charging and discharging operation of the waste battery, and calculates the battery operating temperature and operating time to obtain the operating temperature rise rate; After the used battery stops running, the temperature adaptation unit collects the temperature and heat dissipation duration of the used battery to obtain the battery cooling speed.

5. The automatic detection device for the capacity of waste batteries according to claim 4, characterized in that: The temperature adaptation unit performs a complete discharge operation on the battery under different operating environment temperatures, performs electric energy statistics on the discharge process of the battery, records the smallest capacity of multiple groups of used batteries as the temperature interference capacity, and calculates the difference between the temperature interference capacity and the battery capacity obtained by the capacity detection unit to obtain the capacity adaptation change.

6. The automatic detection device for the capacity of waste batteries according to claim 5, characterized in that: During the process of discharging the waste battery, the electrical parameter detection unit continuously collects the electrical parameters of the waste battery, wherein the electrical parameters include voltage output and current output. The electrical parameter detection unit collects statistics on the collected voltage output and current output, and draws a voltage output curve and a current output curve in a plane coordinate system. The electrical parameter detection unit selects any two points on the voltage output curve, wherein the horizontal coordinate difference corresponding to the two points is a preset fixed value, and the electrical parameter detection unit calculates the difference of the voltage outputs of the two selected points to obtain a unit voltage reduction value; Similarly, the electrical parameter detection unit obtains the unit current reduction value on the current output curve in the same way.

7. The automatic detection device for the capacity of waste batteries according to claim 6, characterized in that: The repair detection module sends the repair parameters to the repair judgment module; The repair judgment module includes a parameter judgment unit and a cost judgment unit; The parameter judgment unit performs a threshold analysis on the repair parameter, and generates a heating speed repair signal if the operating heating speed is greater than the set threshold, generates a cooling speed repair signal if the battery cooling speed is less than the set threshold, and generates a cooling speed normal signal if the battery cooling speed is not less than the set threshold; If the capacity adaptation change is greater than the set threshold, a capacity change repair signal is generated; If the unit current reduction value is greater than the set threshold value, or the unit voltage reduction value is greater than the set threshold value, an electrical parameter repair signal is generated.

8. The automatic detection device for the capacity of waste batteries according to claim 6, characterized in that: The cost judgment unit collects statistics on the heating rate repair signal, the cooling rate repair signal, the capacity change repair signal and the electrical parameter repair signal, and increases the preset minimum cost according to each different repair signal to obtain the repair cost. If the repair cost is greater than the set cost threshold, the used battery is marked as a scrapped battery. If the repair cost is not greater than the set cost threshold, the used battery is marked as a repaired battery.

9. An automated detection method for the capacity of used batteries, used in the automated detection device for the capacity of used batteries as claimed in claim 8, characterized in that: The following steps are involved: Battery capacity detection, repair parameter detection, repair cost estimation, repair battery classification and battery classification delivery.

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