Chemical composition and detection method of probe set

Abstract

The present application provides a detection method for a chemical separation device and a probe group, the device comprising: a probe assembly, comprising a plurality of connected probe groups, the probe group being detachable, and the probe group being used to form and separate the battery; a support device, located on one side of the probe assembly, for supporting the probe assembly to replace the probe group; and a press, the height of which is adjustable in the direction in which the probe assembly points to the support device. By using the support device to replace the probe group of the device, it is not necessary to open the front safety door of the chemical separation device, the stacker at the front safety door of the chemical separation device can continue to operate, and the entire device can operate normally without stopping, thus solving the problem in the related art that when replacing the probe of the chemical separation device, the entire device needs to be shut down for replacement, resulting in poor operating efficiency of the chemical separation device.

Description

Technical Field

[0001] The present application relates to the technical field of lithium-ion battery capacity testing equipment, and in particular to a capacity testing device and a detection method for a probe group. Background Art

[0002] In the lithium-ion battery manufacturing process of the prior art, the formation and capacity separation equipment mainly activates the battery and performs charging and discharging, mainly by contacting the positive and negative poles of the battery through the test probe, which induces a contact resistance during the contact process. At present, conventional testing methods cannot calculate the contact resistance value, and can only rely on manual analysis of data to identify poor contact resistance, such as current fluctuations, voltage fluctuations, and falsely high voltage. At the same time, it may cause misjudgment, because in the actual production process, such poor characteristics are not necessarily caused by contact resistance, but may also be caused by the battery itself, the lower board and other factors.

[0003] At present, the contact resistance of conventional formation and capacity division equipment does not have a sampling function, does not detect the contact status of the battery pole, and has no closed-loop control. When the test probe has poor contact with the battery pole, it is necessary to analyze the data and then disassemble and replace the new test probe to avoid producing bad batteries. The normal process is to shut down the entire device first, and then multiple people work together to disassemble the probe module, replace the new probe, and then reinstall the probe module. The entire installation and disassembly process requires the entire set of equipment to be shut down for processing, and the logistics line will also stop running at this time, affecting the equipment's operating efficiency. Summary of the invention

[0004] The present application provides a detection method for a chemical fractionation device and a probe group, so as to solve the problem in the related art that when replacing the probe of the chemical fractionation device, the entire device needs to be shut down for replacement, resulting in poor operating efficiency of the chemical fractionation device.

[0005] According to one aspect of the present application, a battery formation and capacity separation device is provided, comprising: a probe assembly, comprising a plurality of connected probe groups, the probe groups being detachable and used for forming and capacity separation of a battery; a support device, located on one side of the probe assembly, for supporting the probe assembly for replacement of the probe groups; and a press, the height of which is adjustable in the direction in which the probe assembly points to the support device.

[0006] Optionally, the supporting device includes a first movable component, which includes: an adjusting component, a connecting part and a plurality of second telescopic devices, wherein one end of the connecting part is connected to the adjusting component, and both ends of the connecting part in a preset direction are respectively connected to one end of the second telescopic device, and the other end of the second telescopic device points to the probe assembly, and the adjusting component is used to drive the connecting part to make the second telescopic device telescope, and the preset direction is the length direction of the probe assembly.

[0007] Optionally, the chemical fractionation device also includes at least one probe module, which is connected to the probe assembly. The probe group is distributed in a row in the probe module along a preset direction, and one end of the probe module in the above preset direction is connected to the probe assembly through a snap structure. The preset direction is the length direction of the probe assembly, and the adjustment assembly is also used to open the snap structure.

[0008] Optionally, the supporting device also includes a second movable component, which includes: a plurality of fixed components, a first guide rail and a plurality of rotatable components, wherein the fixed component is movably arranged on the first guide rail, the fixed component is connected to the rotatable component, and the rotatable component and the fixed component correspond one to one; the supporting device also includes a first substrate and a second substrate, wherein: the first substrate is located on one side of the first guide rail and is used to fix the first guide rail, and the first substrate is connected to the rotatable component at both ends in the preset direction; the second substrate is located on the side of the first guide rail away from the first substrate, and the second substrate is connected to the rotatable component at both ends in the preset direction.

[0009] Optionally, the rotatable component includes a first movable part and a second movable part, one end of the first movable part is connected to one end of the first substrate in the preset direction, the other end of the first movable part is connected to the center of gravity of the second movable part, one end of the second movable part is connected to the fixed component, and the other end is connected to one end of the second substrate in the preset direction.

[0010] Optionally, the supporting device further includes a plurality of limiting structures, a second guide rail and a supporting assembly, wherein the limiting structures are respectively located on the second substrate and at both ends of the second guide rail for limiting the supporting group, and the supporting assembly is located on the second guide rail.

[0011] Optionally, each of the probe groups includes two probes, each of the probes has a current needle and a voltage needle, the current needle includes a current sampling line and a first voltage sampling line, the voltage needle is used to detect the voltage of the battery, the current sampling line is used to detect the current of the battery, and the first voltage sampling line is used to detect the tab voltage of the battery.

[0012] Optionally, the chemical fractionation device further includes a plurality of power detection modules, the power detection modules are electrically connected to the first voltage sampling line, the current sampling line and the voltage needle of the probe group, and the power detection modules correspond to the probe groups one by one.

[0013] According to another aspect of the present application, a method for detecting a probe group is provided, which is applied to the chemical composition and capacity device, and the detection method includes: an acquisition step: acquiring the contact resistance value between the probe of the chemical composition and capacity device and the battery; a determination step: judging whether the contact resistance value is less than or equal to a resistance threshold, and in the case where it is determined that the contact resistance value is greater than the resistance threshold, issuing a warning signal, and the warning signal is used to characterize that there is an abnormality in the probe group; in the case where it is determined that the contact resistance value is less than or equal to the resistance threshold, repeating the acquisition step and the determination step in sequence at least once after a preset time period, until the contact resistance value is greater than the resistance threshold and stopping.

[0014] Optionally, the battery detection module of the chemical composition device is electrically connected to the first voltage sampling line, current sampling line and voltage needle of the probe group of the chemical composition device to obtain the contact resistance value between the probe of the chemical composition device and the battery, including: obtaining the voltage, current and tab voltage of the battery detected by the probe group, the tab voltage being collected by the battery detection module through the first voltage sampling line; obtaining the contact voltage between the probe and the battery based on the voltage of the battery and the tab voltage; and obtaining the contact resistance between the probe and the battery based on the contact voltage and the current.

[0015] Through the technical solution of the present application, a chemical separation and containment device is provided, including a probe assembly, a supporting device and a press, wherein the supporting device is arranged on the press and is located on the side of the above-mentioned probe assembly close to the above-mentioned press. When the probe group is disassembled, the above-mentioned supporting device is adjusted to support the above-mentioned probe assembly. During the adjustment process, one side of the above-mentioned probe group is automatically separated from the above-mentioned probe assembly, and then the rear safety door of the above-mentioned chemical separation and containment device is opened, and the other side of the above-mentioned probe group is separated from the above-mentioned probe assembly, so that the above-mentioned probe group can be disassembled and replaced on the above-mentioned supporting device. Since the front safety door of the chemical separation and containment device is not opened during the above-mentioned process, the stacker at the front safety door of the chemical separation and containment device can continue to operate without the need to shut down the entire device. Therefore, the problem in the related art that when replacing the probe of the chemical separation and containment device, the entire device needs to be shut down for replacement, resulting in poor operating efficiency of the chemical separation and containment device is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a partial structural schematic diagram of a chemical fractionation and storage device provided according to an embodiment of the present application;

[0018] Figure 2 It is a structural schematic diagram of a probe module in a chemical fractionation device provided according to an embodiment of the present application;

[0019] Figure 3 It is a structural schematic diagram of a supporting device in a chemical fractionation and capacity device provided according to an embodiment of the present application;

[0020] Figure 4 is a schematic structural diagram of a supporting device in another chemical fractionation and storage device provided according to an embodiment of the present application;

[0021] Figure 5 It is a structural schematic diagram of a supporting device in another chemical component storage device provided according to an embodiment of the present application;

[0022] Figure 6 is a schematic structural diagram of a probe module in another chemical fractionation device provided in an embodiment of the present application;

[0023] Figure 7 It is a structural schematic diagram of detecting a battery in a chemical composition and capacity device provided in an embodiment of the present application;

[0024] Figure 8 is a partial structural schematic diagram of another chemical fractionation and storage device provided according to an embodiment of the present application;

[0025] Fig. 9 It is a schematic diagram of a flow chart of a detection method of a probe group provided in an embodiment of the present application.

[0026] The above drawings include the following reference numerals:

[0027] 10. Probe assembly; 11. Probe group; 12. Probe; 13. Current needle; 14. Voltage needle; 15. Current sampling line; 16. First voltage sampling line; 17. Second voltage sampling line; 20. Support device; 201. Adjustment assembly; 202. Coupling; 203. Hand wheel; 204. Connecting part; 205. Second telescopic device; 206. Fixed assembly; 207. First guide rail; 208. Rotatable assembly; 209 , first substrate; 210, second substrate; 211, first moving part; 212, second moving part; 213, limiting structure; 214, first limiting block; 215, second limiting block; 216, second guide rail; 217, supporting assembly; 218, positioning assembly; 30, press machine; 40, probe module; 41, fixing area; 42, hole; 50, power detection module; 60, battery; 70, cylinder; 80, guide column and guide sleeve. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the prior art, when the test probe has poor contact with the battery pole, it is necessary to analyze the data before disassembling and replacing the new test probe to avoid producing bad batteries. The normal process is to first shut down the entire set of capacity conversion device, then work together to disassemble the probe module, replace the new probe, and then reinstall the probe module. The entire installation and disassembly process requires the entire set of equipment to be shut down for processing, and the logistics line will also stop running at this time, affecting the equipment's operating efficiency.

[0032] Therefore, research on the above issues is carried out. Figure 1 As shown, an embodiment of the present application provides a battery formation and capacity separation device, including: a probe assembly 10, including a plurality of connected probe groups 11, the probe groups 11 are detachable, and the probe groups 11 are used for forming and capacity separation of batteries; a support device 20, located on one side of the probe assembly 10, for supporting the probe assembly 10 to replace the probe groups 11; a press 30, the height of which is adjustable in the direction in which the probe assembly 10 points to the support device 20.

[0033] When the probe group is disassembled by the chemical separation and containment device, the supporting device is adjusted to support the probe assembly. During the adjustment process, one side of the probe group is automatically separated from the probe assembly, and then the rear safety door of the chemical separation and containment device is opened to separate the other side of the probe group from the probe assembly, so that the probe group can be disassembled and replaced on the supporting device. Since the front safety door of the chemical separation and containment device is not opened during the above process, the stacker at the front safety door of the chemical separation and containment device can continue to operate without shutting down the entire device. Therefore, the problem in the related art that when replacing the probe of the chemical separation and containment device, the entire device needs to be shut down for replacement, resulting in poor operating efficiency of the chemical separation and containment device is solved.

[0034] In the above optional implementation, when one or more test probes are found to have a contact resistance value exceeding the resistance threshold (such as 0.5mΩ) in multiple probe groups, an abnormal alarm will be triggered, indicating that the resistance value exceeds the specification. At this time, the process flow of the abnormal channel is immediately suspended, and manual intervention is required to handle the abnormal test probe. For the first time, it can be visually determined whether there are foreign objects on the probes and poles, and clean them first. If the contact resistance is still high after cleaning, a new probe needs to be replaced, and a support device is used for replacement.

[0035] In some optional embodiments, such as Figure 1 to Figure 2As shown, the chemical fractionation device further includes at least one probe module 40, which is connected to the probe assembly 10. The probe group 11 is distributed in a row along a preset direction in the probe module 40. One end of the probe module 40 in the preset direction is connected to the probe assembly 10 through a snap-fit ​​structure. The preset direction is the length direction of the probe assembly 10. The adjustment assembly is also used to open the snap-fit ​​structure.

[0036] In the above optional implementation, if Figure 1 to Figure 2 As shown, the probe module 40 has fixing areas 41 at both ends, wherein one of the fixing areas 41 is connected and fixed to the probe assembly 10 via a snap-fit ​​structure. The snap-fit ​​structure may include a snap and a hole located in the fixing area 41. The probe module 40 includes a plurality of probe groups 11.

[0037] In some optional embodiments, such as Figures 3 to 6 As shown, the support device 20 includes a first moving component, which includes: an adjustment component 201, a connecting portion 204 and a plurality of second telescopic devices 205, wherein one end of the connecting portion 204 is connected to the adjustment component 201, and both ends of the connecting portion 204 in a preset direction are respectively connected to one end of the second telescopic device 205, and the other end of the second telescopic device 205 points to the probe component 10. The adjustment component 201 is used to drive the connecting portion 204 to make the second telescopic device 205 telescope, and the preset direction is the length direction of the probe component 10. Figure 6 As shown, the fixing area has holes 42, the left side is a hole 42 for fixing the buckle, and the right side is a hole 42 for fixing the screw. The hole 42 for fixing the buckle can be a half-open hole, and the hole 42 for fixing the screw can be a half-waist hole.

[0038] In the above optional implementation, if Figures 3 to 6 As shown, the adjustment component 201 may include a coupling 202 and a handwheel 203. By rotating the handwheel 203, the coupling 202 drives the connecting part 204 to drive the second telescopic device 205, so that the support device 20 can be raised and lowered. During the rotation of the handwheel 203, the probe module 40 can be separated from the probe assembly 10. When replacing the probe group 11, it is only necessary to open a safety door (rear safety door) of the chemical separation and containment device to separate the probe module 40 from the other end of the probe assembly 10, which will not affect the overall operation of the chemical separation and containment device.

[0039] In some optional embodiments, such as Figures 3 to 6As shown, the supporting device 20 further includes a second movable component, which includes: a plurality of fixed components 206, a first guide rail 207 and a plurality of rotatable components 208, wherein the fixed component 206 is movably arranged on the first guide rail 207, the fixed component 206 is connected to the rotatable component 208, and the rotatable component 208 corresponds to the fixed component 206 one by one; the supporting device 20 further includes a first substrate 209 and a second substrate 210, wherein: the first substrate 209 is located at one side of the first guide rail 207, for fixing the first guide rail 207, and the two ends of the first substrate 209 in the preset direction are connected to the rotatable component 208; the second substrate 210 is located at a side of the first guide rail 207 away from the first substrate 209, and the two ends of the second substrate 210 in the preset direction are connected to the rotatable component 208.

[0040] In the above optional implementation, if Figures 3 to 5 As shown, the first guide rail 207 is arranged on the first substrate 209, and the fixing component 206 can be a screw nut, which is sleeved on the connecting part 204 and connected to the first guide rail 207. The fixing component 206 can slide on the first guide rail 207, and can drive the rotatable component 208 to move left and right during the sliding process.

[0041] In some optional embodiments, such as Figure 3 to Figure 4 As shown, the rotatable component 208 includes a first movable part 211 and a second movable part 212, one end of the first movable part 211 is connected to one end of the first substrate 209 in the preset direction, the other end of the first movable part 211 is connected to the center of gravity of the second movable part 212, one end of the second movable part 212 is connected to the fixed component 206, and the other end is connected to one end of the second substrate 210 in the preset direction.

[0042] In the above optional implementation, if Figure 3 to Figure 4 As shown, the first movable part 211 is connected to the second movable part 212 via a rotating pin and a bearing combination, and the rotatable component 208 and the second substrate 210 jointly support the probe component.

[0043] In some optional embodiments, such as Figures 3 to 5 As shown, the above-mentioned supporting device 20 also includes a plurality of limiting structures 213, a second guide rail 216 and a supporting assembly 217, wherein the above-mentioned limiting structures 213 are respectively located on the above-mentioned second substrate 210 and at both ends of the above-mentioned second guide rail 216, and are used to limit the above-mentioned supporting assembly 217, and the above-mentioned supporting assembly 217 is located on the above-mentioned second guide rail 216.

[0044] In the above optional implementation, if Figures 3 to 5 As shown, the limiting structure 213 includes a first limiting block 214 and a second limiting block 215, and the first limiting block 214 and the second limiting block 215 are respectively located at the two ends of the second guide rail 216. When the support assembly 217 slides on the second guide rail 216, the support assembly 217 is limited to prevent the support assembly 217 from being separated from the second guide rail 216. The above-mentioned support device 20 also includes a positioning assembly 218, and a positioning area of ​​ferromagnetic material is provided on the surface of the press. The above-mentioned positioning assembly 218 is fixed to the positioning area by magnetic attraction, so that the above-mentioned support device 20 is fixed on the press.

[0045] In some optional embodiments, such as Figure 2 and Figure 7 As shown, each of the above-mentioned probe groups 11 includes two probes 12, each of the above-mentioned probes 12 has a current needle 13 and a voltage needle 14, the above-mentioned current needle 13 includes a current sampling line 15 and a first voltage sampling line 16, the above-mentioned voltage needle 14 is used to detect the voltage of the above-mentioned battery 60, the above-mentioned current sampling line 15 is used to detect the current of the above-mentioned battery 60, and the above-mentioned first voltage sampling line 16 is used to detect the tab voltage of the above-mentioned battery 60.

[0046] In the above optional implementation, if Figure 2 and Figure 7 As shown, each probe group 11 is used to detect a battery 60, wherein two probes 12 are used, one for detecting the positive electrode of the battery 60, and the other for detecting the negative electrode of the battery 60, wherein the current needle 13 on each probe 12 leads to two wires, one is a current sampling line 15, and the other is a first voltage sampling line 16, and the second voltage sampling line 17 is led out from the voltage needle 14, and the current, the tab voltage and the real voltage of the battery 60 are detected respectively through the current sampling line 15, the first voltage sampling line 16 and the second voltage sampling line 17.

[0047] In some optional embodiments, such as Figure 7 As shown, the above-mentioned chemical component capacity device also includes multiple power detection modules 50, and the above-mentioned power detection module 50 is electrically connected to the above-mentioned first voltage sampling line 16, the above-mentioned current sampling line 15 and the above-mentioned voltage needle 14 of the above-mentioned probe group, and the above-mentioned power detection module 50 corresponds to the above-mentioned probe group one by one.

[0048] In the above optional implementation, each probe group corresponds to one of the above power detection modules, so that each probe group can be detected in parallel, so as to timely find abnormal probe groups, improve detection efficiency, and reduce the risk of producing bad batteries. Figure 7As shown, the power detection module 50 has 6 connection points, 3 for detecting the positive pole of the battery 60, and 3 for detecting the negative pole of the battery 60, wherein the 3 connection points correspond to the detection of the charge and discharge sampling current I, the tab voltage V1 and the real voltage V0 of the battery 60 respectively. The voltage collected by the second voltage sampling line 17 is processed by the differential circuit of the power detection module 50 to obtain a real voltage V0 of the battery, and V0 is used for module voltage control and analog-to-digital conversion. The voltage collected by the first voltage sampling line 16 is processed by the differential circuit of the power detection module 50 to obtain a tab voltage V1, and the current collected by the current sampling line 15 is processed by the differential circuit of the power detection module 50 to obtain a charge and discharge sampling current I of the battery.

[0049] In the above optional implementation, if Figure 1 As shown, the chemical fractionation device also includes a power device, which includes a cylinder 70 and a guide post and guide sleeve 80. When disassembling the probe group 11, firstly, the press 30 is driven to disengage by the cylinder 70 and the guide post and guide sleeve 80, and then the battery tray on the press is transferred to other storage locations, and then the rear safety door of the equipment is opened, and the support device 20 is placed in the equipment, and the screws fixing the other end of the probe group 11 to the probe assembly 10 are removed, and the probe group 11 is opened by shaking the adjustment assembly to fix the probe assembly 10 through the snap structure, and then the height of the quick release device is adjusted to remove the test cable, disassemble and replace the probe.

[0050] In the above optional implementation, if Figure 8 As shown, the chemical fractionation device may include a plurality of probe modules 40 , and the support device 20 may support the plurality of probe modules 40 when replacing probes, thereby reducing the cost of producing the support device 20 .

[0051] In the above optional embodiment, when there are relatively few probe groups in the chemical fractionation device, the above-mentioned first voltage sampling line, second voltage sampling line, current sampling line and power supply detection module can be integrated into a detection module, and the detection module is connected to the probe group. When the probe group is disassembled, the probe group and the detection module can be taken out at the same time, and a new probe group with a detection module can be replaced. There is no need to connect the detection line to the new probe group after taking out the probe group, which simplifies the process of replacing the probe group and saves time.

[0052] The present application also provides a method for detecting a probe group, which is applied to the above-mentioned chemical composition device, such as Fig. 9 As shown, the above detection method comprises the following steps:

[0053] Step S301: Acquisition step: Acquisition of the contact resistance value between the probe of the above-mentioned capacitance-composition device and the battery.

[0054] Step S302: Determination step: determine whether the above contact resistance value is less than or equal to the resistance threshold. If it is determined that the above contact resistance value is greater than the above resistance threshold, issue a warning signal, and the above warning signal is used to indicate that the above probe group is abnormal.

[0055] Step S303: when it is determined that the contact resistance value is less than or equal to the resistance threshold, the obtaining step and the determining step are sequentially repeated at least once after a preset time period, until the contact resistance value is greater than the resistance threshold.

[0056] Through the detection method of the probe group of the present application, the contact resistance value between the above-mentioned probe of the above-mentioned formation device and the battery is measured and obtained, and the obtained contact resistance value is compared with the resistance threshold to judge the current contact resistance value in real time. When the size of the above-mentioned contact resistance value does not meet the normal range, it indicates that the above-mentioned probe group is abnormal, and the whole tray of test batteries can be transferred to the storage position of other formation devices of the equipment through the stacker to continue the process test, which reduces the risk of producing defective batteries. At the same time, a warning signal is sent to the work platform to notify the staff to replace the probe, thereby improving the working efficiency of the formation device.

[0057] In some optional embodiments, the battery detection module of the above-mentioned capacity-combining device is electrically connected to the first voltage sampling line, current sampling line and voltage needle of the probe group of the above-mentioned capacity-combining device to obtain the contact resistance value between the above-mentioned probe of the above-mentioned capacity-combining device and the battery, including: obtaining the voltage, current and the tab voltage of the battery detected by the above-mentioned probe group, and the above-mentioned tab voltage is obtained by the above-mentioned battery detection module through the above-mentioned first voltage sampling line; according to the voltage of the above-mentioned battery and the above-mentioned tab voltage, obtaining the contact voltage between the above-mentioned probe and the above-mentioned battery; according to the above-mentioned contact voltage and the above-mentioned current, obtaining the contact resistance between the above-mentioned probe and the above-mentioned battery.

[0058] In the above optional implementation manner, according to the above voltage needle and the battery detection module, the real voltage of the above battery is obtained, according to the current sampling line and the battery detection module, the current of the above battery is obtained, according to the first voltage sampling line and the battery detection module, the tab voltage of the above battery is obtained, and the contact voltage value between the above probe and the battery can be obtained according to the above tab voltage, the above real voltage and the first formula, and the contact resistance value between the above probe and the battery can be obtained according to the above contact voltage value, the current of the above battery and the second formula, wherein the first formula is V2=V1-V0, and the second formula is R=V2 / I.

[0059] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0060] 1) The chemical separation and containment device of the embodiment of the present application can adjust the support device to support the probe assembly when the probe group is disassembled, and one side of the probe group will be automatically separated from the probe assembly during the adjustment process, and then the rear safety door of the chemical separation and containment device is opened to separate the other side of the probe group from the probe assembly, so that the probe group can be disassembled and replaced on the support device. Since the front safety door of the chemical separation and containment device is not opened during the above process, the stacker at the front safety door of the chemical separation and containment device can continue to operate without shutting down the entire device. Therefore, the problem in the related art that when replacing the probe of the chemical separation and containment device, the entire device needs to be shut down for replacement, resulting in poor operating efficiency of the chemical separation and containment device is solved.

[0061] 2) The detection method of the probe group of the embodiment of the present application is used to measure and obtain the contact resistance value between the probe of the above-mentioned chemical fractionation device and the battery, and the obtained contact resistance value is compared with the resistance threshold to determine the current contact resistance value in real time. When the contact resistance value does not fall within the normal range, it indicates that the probe group is abnormal, which increases the risk of producing defective batteries. An early warning signal is sent to the work platform to notify the staff to replace the probe, thereby improving the working efficiency of the chemical fractionation device.

[0062] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0063] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A chemical fractionation device, characterized in that: include: A probe assembly, comprising a plurality of connected probe groups, the probe groups being detachable, and the probe groups being used for forming and dividing the capacity of the battery; A supporting device, located at one side of the probe assembly, used to support the probe assembly to replace the probe group; The supporting device comprises a first moving component, the first moving component comprises: an adjusting component, a connecting part and a plurality of second telescopic devices, wherein one end of the connecting part is connected to the adjusting component, two ends of the connecting part in a preset direction are respectively connected to one end of the second telescopic device, the other end of the second telescopic device points to the probe component, the adjusting component is used to drive the connecting part to make the second telescopic device telescope, and the preset direction is the length direction of the probe component; The chemical component storage device further comprises at least one probe module, the probe module is connected to the probe assembly, the probe group is distributed in a row in the probe module along a preset direction, one end of the probe module in the preset direction is connected to the probe assembly through a buckle structure, the preset direction is the length direction of the probe assembly, and the adjustment assembly is also used to open the buckle structure; The support device further includes a second movable component, which includes: a plurality of fixed components, a first guide rail and a plurality of rotatable components, wherein the fixed component is movably arranged on the first guide rail, the fixed component is connected to the rotatable component, and the rotatable component and the fixed component correspond to each other one by one; the support device further includes a first substrate and a second substrate, wherein: the first substrate is located at one side of the first guide rail and is used to fix the first guide rail, and the first substrate is connected to the rotatable components at both ends in the preset direction; the second substrate is located at a side of the first guide rail away from the first substrate, and the second substrate is connected to the rotatable components at both ends in the preset direction; The rotatable component includes a first moving part and a second moving part, one end of the first moving part is connected to one end of the first substrate in the preset direction, the other end of the first moving part is connected to the center of gravity of the second moving part, one end of the second moving part is connected to the fixed component, and the other end is connected to one end of the second substrate in the preset direction; The press machine is height-adjustable in a direction in which the probe assembly points to the supporting device.

2. The chemical fractionation device according to claim 1, characterized in that: The support device also includes a plurality of limiting structures, a second guide rail and a support assembly, wherein the limiting structures are respectively located on the second substrate and at both ends of the second guide rail for limiting the support assembly, and the support assembly is located on the second guide rail.

3. The chemical fractionation and volume separation device according to claim 1, characterized in that: Each of the probe groups includes two probes, each of which has a current needle and a voltage needle, the current needle includes a current sampling line and a first voltage sampling line, the voltage needle is used to detect the voltage of the battery, the current sampling line is used to detect the current of the battery, and the first voltage sampling line is used to detect the tab voltage of the battery.

4. The chemical fractionation device according to claim 3, characterized in that: The chemical component capacity device further includes a plurality of power detection modules, which are electrically connected to the first voltage sampling line, the current sampling line and the voltage needle of the probe group, and the power detection modules correspond to the probe group one by one.

5. A method for detecting a probe set, characterized in that: Applied to the chemical component storage device according to any one of claims 1 to 4, the detection method comprises: Acquisition step: acquiring the contact resistance value between the probe of the chemical composition device and the battery; Determining step: judging whether the contact resistance value is less than or equal to a resistance threshold value, and issuing a warning signal when it is determined that the contact resistance value is greater than the resistance threshold value, wherein the warning signal is used to indicate that an abnormality exists in the probe group; When it is determined that the contact resistance value is less than or equal to the resistance threshold, the obtaining step and the determining step are sequentially repeated at least once after a preset time period until the contact resistance value is greater than the resistance threshold.

6. The detection method according to claim 5, characterized in that: The battery detection module of the capacitance-combining device is electrically connected to the first voltage sampling line, the current sampling line and the voltage needle of the probe group of the capacitance-combining device to obtain the contact resistance value between the probe of the capacitance-combining device and the battery, including: Acquire the voltage and current of the battery detected by the probe group and the tab voltage of the battery, wherein the tab voltage is acquired by the battery detection module through the first voltage sampling line; Obtaining a contact voltage between the probe and the battery according to the voltage of the battery and the tab voltage; The contact resistance between the probe and the battery is obtained according to the contact voltage and the current.

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