A vehicle-mounted DC filter capacitor and a detection method thereof

Abstract

The present invention relates to a vehicle-mounted DC filter capacitor and a detection method, and relates to the field of vehicle-mounted capacitors, which include a housing, which is placed in a car and preset with a cavity; a capacitor core, which is used to store and release electric charge, and is provided with a plurality of capacitor cores and arranged in a vertical matrix in the cavity of the housing; a stacked copper bar, which abuts on the capacitor core and is used to connect with the outside world; a heat dissipation aluminum plate, which is provided on the housing and is used to dissipate heat from the stacked copper bar; a side of the stacked copper bar close to the heat dissipation aluminum plate is provided with a bent solder joint for abutting the capacitor core, and the bent solder joint is used to make a gap between the stacked copper bar and the capacitor core, and a side of the stacked copper bar away from the heat dissipation aluminum plate is provided with a straight solder joint for abutting the capacitor core, and a plurality of heat dissipation holes are provided on the stacked copper bar, and the plurality of heat dissipation holes correspond to the bent solder joints and the straight solder joints one by one, respectively, and a fixing hole for placing and fixing the heat dissipation aluminum plate is provided on the housing. The present application has the effect of efficient heat dissipation.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted capacitors, and in particular to a vehicle-mounted DC filter capacitor and a detection method thereof. Background Art

[0002] The on-board DC filter capacitor is a capacitor used in the DC circuit of a car. It has the function of filtering out the ripple component in the DC power supply, thereby making the output DC voltage smoother and more stable.

[0003] With the rapid development of the automotive industry, especially the rise of electric vehicles and smart cars, the complexity and power density of vehicle-mounted electronic systems are constantly increasing. Vehicle-mounted DC filter capacitors generate heat during operation, and the heat generated by the capacitor core is dissipated to the outside of the shell through the stacked copper busbars and the capacitor core package.

[0004] The on-board DC filter capacitor in a car generates heat during operation. When the on-board DC filter capacitor is in a high temperature environment, the performance of the on-board DC filter capacitor will be reduced. The heat dissipation speed by the heat sink is slow, which can easily lead to accidents and has low safety. There is still room for improvement. Summary of the invention

[0005] In order to timely and efficiently dissipate heat from a heated on-board DC filter capacitor, the present invention provides a on-board DC filter capacitor and a detection method.

[0006] In a first aspect, the present invention provides a vehicle-mounted DC filter capacitor, which adopts the following technical solution:

[0007] A vehicle-mounted DC filter capacitor, comprising:

[0008] A housing, placed in the vehicle and having a cavity pre-set;

[0009] A capacitor core, used for storing and releasing electric charge, is provided in plurality and arranged in a vertical matrix in the cavity of the housing;

[0010] A stacked copper busbar abuts against the capacitor core and is used to connect with the outside world;

[0011] A heat dissipation aluminum plate, disposed on the housing and used to dissipate heat from the stacked copper busbar;

[0012] A bent solder joint for abutting the capacitor core is arranged on the side of the stacked copper bar close to the heat dissipation aluminum plate, and the bent solder joint is used to create a gap between the stacked copper bar and the capacitor core. A straight solder joint for abutting the capacitor core is arranged on the side of the stacked copper bar away from the heat dissipation aluminum plate. A plurality of heat dissipation holes are provided on the stacked copper bar, and the plurality of heat dissipation holes correspond to the bent solder joints and the straight solder joints respectively. A fixing hole for placing and fixing the heat dissipation aluminum plate is provided on the shell.

[0013] By adopting the above technical solution, when the device is running, the heat dissipated by the capacitor core is transferred to the heat dissipation aluminum plate through the stacked copper busbar, so that the copper busbar fits the surface of the aluminum plate more closely. The stacked copper busbar has a bent solder joint, so that there is a gap between the side of the stacked copper busbar close to the heat dissipation aluminum plate and the capacitor core, which improves the heat dissipation, enables good heat dissipation effect between each capacitor core, makes efficient use of space, and also reaches the optimal state in terms of inductance.

[0014] Optionally, a fixing plate for fixing to the shell is laser welded on the stacked copper busbar.

[0015] By adopting the above technical solution, the stacked copper busbars are welded to the housing and the capacitor core and fixed by laser welding, thereby improving the fixing effect.

[0016] Optionally, it also includes an epoxy resin layer, which is located in the cavity of the shell and is used to cover and wrap the stacked copper busbar and the capacitor core.

[0017] By adopting the above technical solution, the epoxy resin layer located in the shell cavity covers and wraps the stacked copper busbar and the capacitor core, thereby achieving the effects of electrical insulation, mechanical protection, moisture-proof and waterproof, and auxiliary heat dissipation of the stacked copper busbar and the capacitor core. While reducing costs, it also has greater pulling force, enhances the stability and safety of the overall structure, and ensures the normal and stable operation of the electrical equipment.

[0018] In a second aspect, the present application provides a detection method for a vehicle-mounted DC filter capacitor, which is applied to a vehicle-mounted DC filter capacitor according to the first aspect, and adopts the following technical solution:

[0019] Obtaining image detection information in a preset detection area;

[0020] Select the copper busbar image according to the image detection information and the preset copper busbar feature frame;

[0021] Determine the model information from a preset model database according to the copper busbar image;

[0022] Determine the reference bending degree according to the model information;

[0023] Determine the detection bending degree of the bent solder joint according to the copper busbar image;

[0024] Determine whether the reference curvature is consistent with the test curvature;

[0025] If the reference bending degree is consistent with the testing bending degree, the test is completed and the test is performed using the preset crack detection method;

[0026] If the reference bending degree is inconsistent with the detection bending degree, mark the abnormal bending position from the copper busbar image;

[0027] Determine the bending difference according to the reference bending degree and the detection bending degree;

[0028] Determine the bending degree based on the abnormal bending position and the bending difference;

[0029] According to the abnormal bending position, the preset bending device is controlled to bend with a bending degree, and the image detection information is updated until the reference bending degree is consistent with the detected bending degree.

[0030] By adopting the above technical scheme, the reference bending degree of the stacked copper busbar is compared with the actual detected bending degree to obtain the abnormal bending position, and the abnormal bending position is corrected, thereby ensuring that the stacked copper busbar can tightly and regularly abut the heat dissipation aluminum plate, so that the heat generated by the capacitor core can be efficiently transferred to the heat dissipation aluminum plate through the stacked copper busbar, thereby maintaining a good heat dissipation state of the entire device.

[0031] Optionally, when the reference curvature is consistent with the copper busbar curvature, the crack detection method includes:

[0032] Determine whether the copper busbar image contains a preset crack feature;

[0033] If the copper busbar image does not contain crack features, the inspection is completed and the inspection is performed using a preset length inspection method;

[0034] If the copper busbar image contains crack features, the crack position and crack area are determined according to the copper busbar image;

[0035] Determining whether the crack area falls within a preset reference area interval;

[0036] If the crack area falls within the reference area interval, the impurity value is determined based on the copper busbar image and the crack position;

[0037] Determine the inhalation force and inhalation time according to the impurity value;

[0038] Control the preset cleaning device to suck air from the cracked position with suction force and suction time, and update the copper busbar image until no impurities are contained;

[0039] Determine the value of crack repair fluid according to the crack area;

[0040] Obtaining the copper bar evenness of the stacked copper bar according to the copper bar image, determining the clamping state according to the copper bar evenness and controlling the preset joining device to clamp the crack position, controlling the preset repairing device to inject the crack repairing liquid into the crack position, and performing detection by a preset length detection method;

[0041] If the crack area does not fall within the reference area interval, the preset clamping device is controlled to clamp the copper bar corresponding to the crack position to the preset waste area.

[0042] By adopting the above technical scheme, when the reference curvature is consistent with the curvature of the copper busbar, impurities will be removed from the crack position in the reference area range, and the crack repair liquid value will be determined according to the area and position of the crack, and the crack repair liquid value will be used for repair. When the stacked copper busbar is matched with the heat dissipation aluminum plate in the car, it can effectively conduct the heat of the capacitor core, avoid the heat transfer affected by the cracking of the copper busbar, the accumulation of impurities or the uneven edges, ensure the stable and efficient operation of the entire heat dissipation system, and improve the stability and heat dissipation effect of the heat dissipation.

[0043] Optionally, the length detection method includes:

[0044] Obtain copper busbar image information in the detection area;

[0045] Determine the contact length value according to the copper busbar image information;

[0046] Determine the reference length value according to the model information;

[0047] Determine whether the contact length value is consistent with the reference length value;

[0048] If the contact length value is consistent with the reference length value, the test is completed and the test is performed using the preset size detection method;

[0049] If the contact length value is inconsistent with the reference length value, the abnormal length position is determined according to the copper busbar image information, and the length difference is calculated according to the contact length value and the reference length value;

[0050] When the length difference is a positive value, the contact cutting position is determined according to the length difference and the length abnormal position, the preset cutting device is controlled to perform cutting at the contact cutting position to obtain a cutting block, and the preset clamping device is controlled to clamp the cutting block to a preset melting preparation area;

[0051] When the length difference is a negative value, the feeding value is determined according to the length difference and the model information, and the preset feeding device is controlled to produce the feeding strip according to the feeding value;

[0052] The preset clamping device is controlled to repair the filler strip using a preset welding method.

[0053] By adopting the above technical solution, the contact length value is determined by obtaining the copper busbar image information, and the reference length value is clarified and compared in combination with the model information. The length difference of the inconsistency is calculated, and adjustment and repair are performed through cutting or filling operations according to the positive and negative conditions of the length difference, so that the copper busbar is adapted to the heat dissipation aluminum plate and the capacitor core, ensuring that heat is smoothly transferred from the capacitor core to the heat dissipation aluminum plate through the copper busbar, maintaining the stability of the heat dissipation system in the car, and improving the stability of heat dissipation.

[0054] Optionally, the size detection method includes:

[0055] Determine the heat dissipation hole size of the stacked copper busbar from a preset size database according to the image detection information;

[0056] Determine the basic size of the heat dissipation hole according to the model information;

[0057] Determine whether the heat dissipation hole size is consistent with the heat dissipation hole reference size;

[0058] If the heat dissipation hole size is consistent with the heat dissipation hole reference size, continue testing;

[0059] If the heat dissipation hole size is inconsistent with the heat dissipation hole reference size, the size deviation information between the heat dissipation hole size and the heat dissipation hole reference size is calculated, and the position corresponding to the size deviation information in the image detection information is defined as the size abnormal position;

[0060] When the abnormal size position falls into the preset straight contact area, determine whether the heat dissipation hole size is larger than the heat dissipation hole reference size;

[0061] If the heat dissipation hole size is larger than the heat dissipation hole reference size and falls within the preset maximum range, the detection is completed;

[0062] If the heat dissipation hole size is larger than the heat dissipation hole reference size and does not fall within the preset maximum range, controlling the preset clamping device to clamp the stacked copper busbar to the preset waste area;

[0063] If the heat dissipation hole size is not larger than the heat dissipation hole reference size, a cutting value is determined from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size;

[0064] The heat dissipation hole cutting position is determined according to the heat dissipation hole size and the heat dissipation hole reference size, and a preset cutting device is controlled to cut the heat dissipation hole cutting position according to the cutting value.

[0065] By adopting the above technical solution, the heat dissipation hole size and reference size of the stacked copper busbar are determined and compared through image detection information and model information, and the heat dissipation holes that are too large and exceed the tolerance range are clamped to the waste area, and the heat dissipation holes that are too small are cut, thereby avoiding the influence of abnormal heat dissipation hole size on heat conduction and dissipation efficiency, maintaining the stable operating temperature of automotive-related electronic systems, and improving the overall heat dissipation performance and reliability.

[0066] Optionally, the size detection method further includes:

[0067] When the abnormal size position falls into the preset bending contact area, determining whether the heat dissipation hole size is larger than the heat dissipation hole reference size;

[0068] If the heat dissipation hole size is larger than the heat dissipation hole reference size, the deviation size is determined based on the heat dissipation hole size and the heat dissipation hole reference size, and the copper bar inclination is determined based on the deviation size and the abnormal size position;

[0069] When the inclination of the copper bar does not fall into the preset reference stable interval, the missing repair value is determined according to the deviation size, and the preset material filling device is controlled to manufacture a repair block with the missing repair value;

[0070] Controlling a preset clamping device to repair the repair block by a preset welding method;

[0071] If the heat dissipation hole size is not larger than the heat dissipation hole reference size, a deviation area is determined according to the heat dissipation hole size and the heat dissipation hole reference size, and the deviation area is defined as an inclined cutting position;

[0072] Then, the cutting value is determined from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size;

[0073] The preset cutting device is controlled to cut the inclined cutting position with the cutting value.

[0074] By adopting the above technical solution, when there is an abnormal size in the bent contact area of ​​the stacked copper busbar, if the size is too small, it is cut, and if the size is too large, it is repaired, thereby ensuring that the heat dissipation hole size of the stacked copper busbar meets the requirements, ensuring that it can cooperate with the heat dissipation aluminum plate in the car, so that the heat generated by the capacitor core is conducted and dissipated through the heat dissipation holes of the copper busbar, maintaining the stability and efficiency of the entire heat dissipation system, and avoiding the influence of heat transfer due to the size of the heat dissipation holes and the shape of the copper busbar.

[0075] Optionally, after the stacked copper busbar and the capacitor core are welded, a preset fixed detection method is used for detection, and the fixed detection method includes:

[0076] Determine the reference pulling image, pulling force and pulling position according to the model information;

[0077] Controlling a preset pulling device based on a pulling position to fix the stacked copper busbar and the capacitor core, and controlling the pulling device to pull the stacked copper busbar and the capacitor core based on a pulling force, and acquiring pulling image information;

[0078] Determine whether the pulled image information is consistent with the reference pulled image;

[0079] If the pulled image information is consistent with the reference pulled image, the detection is completed;

[0080] If the pulling image information is inconsistent with the reference pulling image, the pulling abnormal position and the looseness value are determined according to the pulling image information and the reference pulling image;

[0081] Determine whether the looseness value is within the preset benchmark repair interval;

[0082] If the looseness value falls within the reference repair interval, the looseness repair fluid value is determined according to the looseness value, and the preset repair device is controlled to repair the abnormal pulling position with the looseness repair fluid value;

[0083] Controlling a preset cooling device to cool down the abnormal pulling position, and re-controlling the pulling device to pull, and obtaining the pulling image information after the pulling, until the pulling image information is consistent with the reference pulling image;

[0084] If the looseness value does not fall into the benchmark repair interval, the copper bus block is removed according to the abnormal pulling position, the preset removal device is controlled to separate the removed copper bus block from the capacitor core, and the preset clamping device is controlled to clamp the removed copper bus block to the preset waste area.

[0085] By adopting the above technical solution, the stacked copper busbar and the capacitor core are pulled together. If there is any looseness during pulling, the looseness value after pulling is within the benchmark repair interval, the loose part is repaired, and the pulling test is repeated. The stacked copper busbar whose looseness value after pulling is not within the benchmark repair interval is removed, thereby ensuring a stable connection between the stacked copper busbar and the capacitor core, ensuring stable and efficient operation of the heat dissipation system, and avoiding poor heat dissipation and failure of related electronic equipment due to loose connection affecting heat conduction.

[0086] Optionally, the method further includes a step after the pulling image information is consistent with the reference pulling image, which is as follows:

[0087] Obtain the angle detection value and the reference angle value in the detection area;

[0088] Determine whether the angle detection value is consistent with the reference angle value;

[0089] If the angle detection value is consistent with the reference angle value, the detection is completed;

[0090] If the angle detection value is inconsistent with the reference angle value, the angle difference between the angle detection value and the reference angle value is calculated, and the position corresponding to the angle difference is used as the angle abnormality position;

[0091] The adjustment amount is determined according to the angle difference, and the preset dismantling device is controlled to dismantle the position with abnormal angle, and re-weld with the adjustment amount.

[0092] By adopting the above technical solution, the position of the stacked copper busbar with abnormal angle is removed and adjusted to the welding point position for welding, thereby ensuring that the angle of the stacked copper busbar meets the requirements and can cooperate with the capacitor core, avoiding the abnormal angle affecting heat transfer and causing heat dissipation problems, thereby improving the stability of heat dissipation.

[0093] In summary, the present application includes at least one of the following beneficial technical effects:

[0094] 1. Heat dissipation is achieved through the bending solder joints of the stacked copper busbars and the heat dissipation aluminum plate, which improves the heat dissipation effect;

[0095] 2. By repairing the cracked position, the cracked copper bar is prevented from interfering with heat transfer, thereby ensuring the stable and efficient operation of the entire cooling system and improving the stability of heat dissipation;

[0096] 3. By cutting or filling the length of the welded parts of the stacked copper busbar, the copper busbar can be adapted to the heat dissipation aluminum plate and capacitor core, ensuring that heat is smoothly transferred from the capacitor core to the heat dissipation aluminum plate through the copper busbar, thereby maintaining the stability of the heat dissipation system in the car and improving its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0097] Figure 1 It is an exploded schematic diagram of the heat dissipation aluminum plate and the shell of the vehicle-mounted DC filter capacitor of the embodiment of the present application;

[0098] Figure 2 is an overall exploded schematic diagram of a vehicle-mounted DC filter capacitor according to an embodiment of the present application;

[0099] Figure 3 It is an exploded schematic diagram of a stacked copper busbar of a vehicle-mounted DC filter capacitor according to an embodiment of the present application;

[0100] Figure 4 is a flow chart of a method for detecting a vehicle-mounted DC filter capacitor according to an embodiment of the present application;

[0101] Figure 5 It is a flow chart of a crack detection method for a vehicle-mounted DC filter capacitor according to an embodiment of the present application.

[0102] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Shell; 2. Capacitor core; 3. Stacked copper busbar; 4. Heat dissipation aluminum plate; 5. Heat dissipation hole; 6. Bent solder joint; 7. Straight solder joint; 8. Fixing plate; 9. Epoxy resin layer; 10. Fixing hole; 11. First contact plate; 12. Second contact plate; 13. Connecting plate. DETAILED DESCRIPTION

[0103] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0104] Reference Figure 1 and Figure 2 The embodiment of the present application discloses a vehicle-mounted DC filter capacitor, comprising a housing 1, a capacitor core 2, a stacked copper busbar 3, a heat dissipation aluminum plate 4, and an epoxy resin layer 9. The housing 1 is placed in a car and has a cavity. The heat dissipation aluminum plate 4 is used for heat dissipation and is located on one side of the housing 1. The housing 1 is provided with a fixing hole 10 for placing and fixing the heat dissipation aluminum plate 4. The fixing hole 10 is used to connect the cavity of the housing 1 with the outside.

[0105] Reference Figure 2 and Figure 3, a plurality of capacitor cores 2 are provided, and the plurality of capacitor cores 2 are placed in a vertical matrix in the cavity of the housing 1. The stacked copper bar 3 is used to connect the plurality of capacitor cores 2 to the outside world. A bending solder joint 6 is integrally provided on the side of the stacked copper bar 3 close to the heat dissipation aluminum plate 4, and the bending solder joint 6 is bent toward the side close to the capacitor core 2, so that there is a gap between the stacked copper bar 3 close to the heat dissipation aluminum plate 4 and the capacitor core 2. A straight solder joint 7 is integrally provided on the side of the stacked copper bar 3 away from the heat dissipation aluminum plate 4, and the number of the bending solder joints 6 and the number of the straight solder joints 7 are consistent with the number of the capacitor cores 2. The stacked copper bar 3 is provided with heat dissipation holes 5, and each bending solder joint 6 and the straight solder joint 7 correspond to a heat dissipation hole 5, thereby reducing the raw materials for making the stacked copper bar 3 and improving the heat dissipation effect. In this embodiment, there are eight capacitor cores 2, and two stacked copper bars 3 are provided. The stacked copper bars 3 are Z-shaped. The stacked copper bars 3 include a first contact plate 11, a second contact plate 12, and a connecting plate 13. The height of the first contact plate 11 is equal to the height of the second contact plate 12, and the height of the connecting plate 13 is less than half of the height of the first contact plate 11. The bent solder joint 6 is located on the first contact plate 11, and the straight solder joint 7 is located on the second contact plate 12. The first contact plate 11 and the second contact plate 12 are arranged in parallel, and the connecting plate 13 is vertically connected to the first contact plate 11 and the second contact plate 12 respectively. The first contact plate 11 in one stacked copper bar 3 and the second contact plate 12 in another stacked copper bar 3 are symmetrical with respect to the capacitor core 2, so that the first contact plate 11 of each stacked copper bar 3 is connected to four capacitor cores 2 respectively. The heat generated by the capacitor core 2 when working is transferred to the heat dissipation aluminum plate 4 through the Z-shaped stacked copper bar 3 through the stacked copper bar 3, and then the heat is dissipated through the heat dissipation aluminum plate 4, thereby improving the heat dissipation effect.

[0106] Reference Figure 2 and Figure 3 A fixing plate 8 is laser welded on the side of the first contact plate 11 of the two stacked copper bars 3 away from the housing 1, and the fixing plate 8 is used to connect and fix the stacked copper bars 3 to the housing 1. By laser welding the fixing plate 8, the cost is reduced and the pulling force is greater.

[0107] Reference Figure 1 and Figure 2 The epoxy resin layer 9 is poured into the cavity of the shell 1 on which the capacitor core 2 and the stacked copper busbar 3 are installed, and covers and wraps the stacked copper busbar 3 and the capacitor core 2, thereby performing vacuum encapsulation, which on the one hand ensures that the product is resistant to high temperature wave current, and on the other hand reduces the weight of the product.

[0108] Reference Figure 4 Based on the same inventive concept, an embodiment of the present invention provides a method for detecting a vehicle-mounted DC filter capacitor, comprising:

[0109] Step 100: Obtain image detection information in a preset detection area.

[0110] The detection area refers to the area where the DC filter capacitor is detected, and the detection area is pre-delimited by the operator. The image detection information refers to the image obtained by detecting the DC filter capacitor in the detection area. The image detection information is obtained by a camera preset in the detection area.

[0111] Step 101: Select a copper busbar image according to image detection information and a preset copper busbar feature frame.

[0112] The copper busbar feature refers to the features of the appearance and shape of the stacked copper busbar 3. The copper busbar image refers to a photo of the stacked copper busbar 3. The image satisfying the features of the stacked copper busbar 3 is framed out from the image detection information by using the copper busbar feature, thereby obtaining the copper busbar image.

[0113] Step 102: Determine model information from a preset model database according to the copper busbar image.

[0114] The model database stores the corresponding images of different models of stacked copper busbars 3 and the corresponding reference bending degree, reference length value, heat dissipation hole reference size, reference pulling image, reference bending image, reference bending image, pulling force and pulling position parameter information of different models of stacked copper busbars 3. The model database is formed after the staff pre-sets the input, and no further description is given here. Model information refers to the parameter information such as specifications and images corresponding to the model of stacked copper busbars 3, including the reference bending degree, reference length value, heat dissipation hole reference size, reference pulling image, pulling force and pulling position corresponding to stacked copper busbars 3. The copper busbar image is input into the model database for matching, so as to obtain the model consistent with the copper busbar image and as the model information of the stacked copper busbar 3.

[0115] Step 103: Determine a reference bending degree according to the model information.

[0116] The reference bending degree refers to the standard detection bending degree of bending at the bending weld 6. The corresponding reference bending degree is retrieved from the model database according to the model information, thereby determining the reference bending degree.

[0117] Step 104: Determine the detected bending degree of the bending solder joint 6 according to the copper busbar image.

[0118] The detected bending degree refers to the actual detected bending degree of the bending solder joint 6. The detected bending degree of the bending solder joint 6 is determined by comparing and analyzing the copper busbar image with the preset reference bending image. The reference bending image is a preset reference bending image, and the corresponding reference bending image is retrieved from the model database through the model information.

[0119] Step 105: Determine whether the reference curvature is consistent with the detection curvature.

[0120] By judging whether the reference bending degree is consistent with the test bending degree, it can be determined whether the bending meets the standard.

[0121] Step 1050: If the reference curvature is consistent with the detection curvature, the detection is completed and the detection is performed using a preset crack detection method.

[0122] If the reference bending degree is consistent with the detection bending degree, it means that the detection bending degree of the bending solder joint 6 is normal, and the detection is completed, and the detection is performed using a preset crack detection method. The crack detection method is to detect whether the stacked copper busbar 3 has cracks. The crack detection method refers to steps 200-207.

[0123] Step 1051: If the reference bending degree is inconsistent with the detected bending degree, mark the abnormal bending position from the copper busbar image.

[0124] The abnormal bending position refers to the position where the detected bending degree of the bending solder joint 6 is abnormal. If the reference bending degree is inconsistent with the detected bending degree, it means that the detected bending degree of the bending solder joint 6 is abnormal, and it is marked from the copper busbar image to obtain the abnormal bending position.

[0125] Step 106: Determine the bending difference according to the reference bending degree and the detection bending degree.

[0126] The bending difference refers to the difference between the reference bending and the detection bending. The difference between the reference bending and the detection bending is calculated to obtain the bending difference.

[0127] Step 107: Determine the bending degree according to the abnormal bending position and the bending difference.

[0128] The bending degree refers to the parameters for bending the bending weld 6. The abnormal bending position and the bending difference are input into a preset bending database to obtain the bending degree. The bending database stores the parameters that need to be bent from the abnormal position and the bending difference. The bending database is a database set by humans and will not be described in detail here.

[0129] Step 108: Control a preset bending device to bend at a bending degree according to the abnormal bending position, and update the image detection information until the reference bending degree is consistent with the detected bending degree.

[0130] The bending device is a preset manipulator. The manipulator is controlled to bend the bending solder joint 6 of the abnormal bending position with the bending degree, and the image detection information is updated until the reference bending degree is consistent with the detection bending degree, and the detection is completed. When the bending degrees are consistent, the first contact plate 11 of the stacked copper busbar 3 and the capacitor core 2 directly maintain a preset reference gap distance. The reference gap distance is the gap distance after the bending contact area of ​​the stacked copper busbar 3 and the capacitor core 2 are welded. In the present embodiment, the reference gap distance is 1 mm.

[0131] Reference Figure 5 , crack detection methods include:

[0132] Step 200: Determine whether the copper busbar image contains a preset crack feature.

[0133] The crack feature refers to the feature of the posture of the stacked copper busbar 3 when it is cracked. By judging whether the copper busbar image contains the preset crack feature, it is determined whether the stacked copper busbar 3 is cracked.

[0134] Step 2000: If the copper busbar image does not contain crack features, the detection is completed and the detection is performed using a preset length detection method.

[0135] If the copper busbar image does not contain crack features, indicating that the stacked copper busbar 3 is not cracked, the detection is completed and the detection is performed using a preset length detection method. The length detection method refers to the detection of the contact length value of the stacked copper busbar 3 and the capacitor core 2 welded together. The length detection method refers to steps 300 to 306.

[0136] Step 2001: If the copper busbar image contains crack features, determine the crack position and crack area according to the copper busbar image.

[0137] The crack position refers to the position where the stacked copper busbar 3 is cracked. The crack area refers to the cracked area when the stacked copper busbar 3 is cracked. If the copper busbar image contains crack features, it means that the stacked copper busbar 3 is cracked. A coordinate system is established in the copper busbar image, and the crack position and crack area are determined by the position and area covered by the crack features in the coordinate system.

[0138] Step 201: Determine whether the crack area falls within a preset reference area range.

[0139] The reference area interval refers to the area interval of the crack that can be repaired. It is determined whether the crack area falls within the preset reference area interval to determine whether it can be repaired.

[0140] Step 2010: If the crack area falls within the reference area interval, the impurity value is determined according to the copper busbar image and the crack position.

[0141] The impurity value refers to the amount of impurities such as dust. The impurity feature refers to the appearance, color and shape characteristics of dust or impurities. If the crack area falls within the reference area range, it means that it can be repaired. Then, the preset impurity feature is selected through the copper busbar image detection to obtain the impurity image. The distribution and color depth of the impurities in the impurity image are analyzed to obtain the impurity value.

[0142] Step 202: Determine the inhalation force and inhalation time according to the impurity value.

[0143] The inhalation force refers to the force of inhaling impurities. The impurity value is input into the preset inhalation database to obtain the corresponding inhalation force and inhalation time. The inhalation database stores the inhalation force and inhalation time corresponding to different impurity values. The inhalation database is a manually set database and will not be described in detail here.

[0144] Step 203: Control the preset cleaning device to suction the cracked position with suction force and suction time, and update the copper busbar image until no impurities are contained.

[0145] The cleaning device is a preset vacuum cleaner. The vacuum cleaner is controlled to suck air from the cracked position with suction force and suction time, and the copper busbar image is updated until no impurities are contained, and the suction is completed.

[0146] Step 204: Determine the value of the crack repairing fluid according to the crack area.

[0147] The crack repair liquid value refers to the repair liquid value for repairing the crack. The model information is input into a preset thickness database to obtain a reference thickness value. The thickness database stores reference thickness values ​​of stacked copper busbars 3 of various models. The thickness database is a manually set database and will not be described in detail here.

[0148] The crack volume is determined based on the reference thickness value and the crack area, and the crack volume is input into a preset repair database to determine the crack repair fluid value. The repair database stores the repair fluid values ​​corresponding to each crack volume. The repair database is an artificially set database and will not be elaborated here.

[0149] Step 205: Obtain the copper bar alignment of the stacked copper bar 3 according to the copper bar image, determine the clamping state according to the copper bar alignment, control the preset joining device to clamp the crack position, control the preset repairing device to inject the crack repairing liquid into the crack position, and perform detection using a preset length detection method.

[0150] The copper bar evenness refers to the evenness of the surface of the stacked copper bar 3. The specific method for obtaining the copper bar evenness refers to step 206-step 2061. The repair device is a heating injection gun. The joining device is two preset manipulators. The clamping state is in two states, namely, the clamping state in which the two manipulators are controlled to clamp and flatten the two ends of the crack into the inside of the crack and the fixing state in which the two manipulators are controlled to directly clamp and fix the stacked copper bar 3.

[0151] The clamping state is determined by the copper bar alignment. When the alignment is greater than the preset clamping reference value, it is in the clamping state. When the alignment is not greater than the preset clamping reference value, it is in the fixed state. The two manipulators are controlled to clamp the crack position in the clamping state. The heating injection gun is controlled to inject the crack repair liquid into the crack position, and the length detection method is used for detection. The length detection method refers to steps 300 to 306.

[0152] Step 206: Determine whether the crack position contains a preset deformation feature according to the copper busbar image.

[0153] The edge area refers to the area at the edge of the stacked copper bar 3, and the edge area is pre-set by the staff. The deformation feature refers to the situation that the height of the edge is different or there is a depression or a protrusion. When the crack position is in the preset edge area, the deformation feature of the crack position in the copper bar image is identified by a preset camera to determine whether the crack position contains the deformation feature, thereby determining whether the copper bar neatness reaches the preset reference standard. The reference standard refers to the standard for neat edges, which is pre-set by the staff.

[0154] Step 2060: If the cleaved location includes a deformation feature, clamping is performed in a clamped state.

[0155] If the crack position contains deformation features, it means that the copper bar neatness of the stacked copper bar 3 does not meet the reference standard, and then the two manipulators are controlled to clamp the crack position in a clamping state.

[0156] Step 2061: If the cleaved position does not contain a deformation feature, clamping is performed in a fixed state.

[0157] If the crack position does not contain deformation features, it means that the copper bar neatness of the stacked copper bar 3 reaches the reference standard, and then the two manipulators are controlled to clamp the crack position in a fixed state.

[0158] Step 2011: If the crack area does not fall within the reference area interval, a preset clamping device is controlled to clamp the copper busbar corresponding to the crack position to a preset waste area.

[0159] The clamping device is a preset manipulator. The waste area refers to the area where the discarded materials are placed. The waste area is formed by the operator's pre-setting and storage. If the crack area does not fall into the reference area range, it means that the crack area is too large to be repaired, then the manipulator is controlled to clamp the copper bar corresponding to the crack position to the preset waste area.

[0160] Length detection methods include:

[0161] Step 300: Obtain copper busbar image information in the detection area.

[0162] The copper busbar image information refers to a photo of the stacked copper busbar 3. The copper busbar image information in the detection area is obtained by a camera preset in the detection area.

[0163] Step 301: Determine the contact length value according to the copper busbar image information.

[0164] The contact length value refers to the length value of the contact between the bent solder joint 6 of the stacked copper busbar 3 and the capacitor core 2 after welding. The solder joint image is selected by the copper busbar image information and the preset solder joint feature frame, and the contact length value of the stacked copper busbar 3 and the capacitor core 2 is determined according to the solder joint image, thereby obtaining the contact length value. The solder joint feature refers to the shape and posture of the bent solder joint 6 and the capacitor core 2 after welding, and the solder joint feature is preset by the staff.

[0165] Step 302: Determine a reference length value according to the model information.

[0166] The reference length value refers to the reference length value of the contact between the stacked copper busbar 3 and the capacitor core 2 by welding. The corresponding reference length value is retrieved from the model database through the model information, thereby determining the reference length value.

[0167] Step 303: Determine whether the contact length value is consistent with the reference length value.

[0168] It is determined whether the contact length value is consistent with the reference length value, so as to determine whether there is an abnormality in the length value of the welding contact between the stacked copper busbar 3 and the capacitor core 2 .

[0169] Step 3030: If the contact length value is consistent with the reference length value, the detection is completed and the detection is performed using a preset size detection method.

[0170] If the contact length value is consistent with the reference length value, it means that the contact length of the stacked copper busbar 3 and the capacitor core 2 is normal, and the detection is completed, and the detection is performed using a preset size detection method, which refers to detecting the size of the heat dissipation hole 5 of the stacked copper busbar 3. The size detection method refers to steps 400 to 504.

[0171] Step 3031: If the contact length value is inconsistent with the reference length value, the abnormal length position is determined according to the copper busbar image information, and the length difference is calculated according to the contact length value and the reference length value.

[0172] The abnormal length position is the position corresponding to the abnormal bending solder joint 6. If the contact length value is inconsistent with the reference length value, it means that the contact length of the stacked copper busbar 3 and the capacitor core 2 is abnormal, and the abnormal length position is marked from the copper busbar image information. The contact length value and the reference length value are calculated to obtain the length difference.

[0173] Step 304: When the length difference is a positive value, the contact cutting position is determined according to the length difference and the length abnormality position, the preset cutting device is controlled to cut at the contact cutting position to obtain a cutting block, and the preset clamping device is controlled to clamp the cutting block to the preset melting preparation area.

[0174] The contact cutting position refers to the position where the contact surface of the stacked copper busbar 3 and the capacitor core 2 is cut. The cutting device is an electric cutting machine. The melting preparation area is a preset area for melting the material to prepare the material. The clamping device is a preset manipulator.

[0175] When the length difference is positive, it means that the contact length between the stacked copper busbar 3 and the capacitor core 2 is too long, and the contact cutting position is determined by the abnormal length position and the length difference. The electric cutting machine is controlled to cut at the contact cutting position to obtain a cut block, and the manipulator is controlled to clamp the cut block to the melting preparation area.

[0176] Step 305: When the length difference is a negative value, a feeding value is determined according to the length difference and the model information, and a preset feeding device is controlled to produce a feeding strip according to the feeding value.

[0177] The replenishment value refers to the amount of material to be replenished. The replenishment strip is a strip of material used to replenish the length produced by the replenishment value. The replenishment device is a 3D printer. When the length difference is a negative value, it means that the length of the contact between the stacked copper busbar 3 and the capacitor core 2 is too short. The length difference and the model information are input into a preset replenishment database to obtain the replenishment value. The replenishment database stores replenishment values ​​corresponding to the length differences of different models of stacked copper busbars 3 and different stacked copper busbars 3. The replenishment database is a database set by humans and will not be described in detail here. After obtaining the replenishment value, the 3D printer is controlled to produce a replenishment strip with the replenishment value.

[0178] Step 306: Control a preset clamping device to repair the filler strip using a preset welding method.

[0179] The clamping device is a preset manipulator. The welding method refers to welding by preset laser welding. The clamping device is controlled to clamp the filler strip to the end of the abnormal length position, and the laser welding is controlled to weld the filler strip to the abnormal length position.

[0180] Dimension detection methods include:

[0181] Step 400: Determine the heat dissipation hole size of the stacked copper busbar 3 from a preset size database according to the image detection information.

[0182] The heat dissipation hole size refers to the actual detected size of the heat dissipation hole 5 of the stacked copper busbar 3. The heat dissipation hole sizes corresponding to various models of the stacked copper busbar 3 are stored in the size database, which is a database set manually and will not be described in detail here. The image detection information is input into the size database to obtain the heat dissipation hole size of the stacked copper busbar 3.

[0183] Step 401: Determine the reference size of the heat dissipation hole according to the model information.

[0184] The heat dissipation hole reference size refers to the standard size of the heat dissipation hole 5 of the stacked copper busbar 3. The corresponding heat dissipation hole reference size is retrieved from the model database through the model information to determine the heat dissipation hole reference size.

[0185] Step 402: Determine whether the heat dissipation hole size is consistent with the heat dissipation hole reference size.

[0186] Determine whether the heat dissipation hole size is consistent with the heat dissipation hole reference size, so as to determine whether the heat dissipation hole size is standard.

[0187] Step 4020: If the heat dissipation hole size is consistent with the heat dissipation hole reference size, continue testing.

[0188] If the heat dissipation hole size is consistent with the heat dissipation hole reference size, it means that the heat dissipation hole size is normal, then continue testing.

[0189] Step 4021: If the heat dissipation hole size is inconsistent with the heat dissipation hole reference size, the size deviation information between the heat dissipation hole size and the heat dissipation hole reference size is calculated, and the position corresponding to the size deviation information in the image detection information is defined as the size abnormality position.

[0190] The size deviation information refers to the deviation between the heat dissipation hole size and the heat dissipation hole reference size. The size abnormality position refers to the position where the heat dissipation hole size is abnormal in the stacked copper busbar 3. If the heat dissipation hole size is inconsistent with the heat dissipation hole reference size, it means that the heat dissipation hole size is abnormal. The deviation value between the heat dissipation hole size and the heat dissipation hole reference size is calculated to obtain the size deviation information, and the position corresponding to the size deviation information in the image detection information is defined as the size abnormality position.

[0191] Step 403: When the abnormal size position falls into the preset straight contact area, determine whether the heat dissipation hole size is greater than the heat dissipation hole reference size.

[0192] The straight contact area refers to the area of ​​the heat dissipation hole 5 soldered with the straight solder joint 7 on the stacked copper busbar 3. When the position with abnormal size falls into the preset straight contact area, it is determined whether the size of the heat dissipation hole is larger than the reference size of the heat dissipation hole, thereby determining the treatment method for the heat dissipation hole 5 with abnormal size.

[0193] Step 4030: If the heat dissipation hole size is larger than the heat dissipation hole reference size and falls within the preset maximum range, the detection is completed.

[0194] The maximum range refers to the maximum range that the size of the heat dissipation hole 5 on the second contact plate 12 can accept. If the heat dissipation hole size is larger than the heat dissipation hole reference size and falls within the preset maximum range, it means that although the heat dissipation hole size is larger than the heat dissipation hole reference size, it does not affect the function of the stacked copper busbar 3, and the detection is completed.

[0195] Step 40300: If the heat dissipation hole size is larger than the heat dissipation hole reference size and does not fall within the preset maximum range, then control the preset clamping device to clamp the stacked copper busbar 3 to the preset waste area.

[0196] The clamping device is a preset manipulator. The waste area refers to the area where waste materials are placed, and the waste area is preset by the operator. If the heat dissipation hole size is larger than the heat dissipation hole reference size and does not fall within the preset maximum range, it means that the heat dissipation hole size is too large and exceeds the acceptable range, then the manipulator is controlled to clamp the stacked copper busbar 3 into the waste area.

[0197] Step 4031: If the heat dissipation hole size is not greater than the heat dissipation hole reference size, a cutting value is determined from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size.

[0198] The cutting value refers to the parameter for cutting the heat dissipation hole 5. If the heat dissipation hole size is not greater than the heat dissipation hole reference size, it means that the heat dissipation hole size is too small, then the difference between the heat dissipation hole size and the heat dissipation hole reference size is calculated, and the calculated difference is input into the cutting database to obtain the cutting value. The cutting database pre-stores the cutting values ​​corresponding to the differences between different heat dissipation hole sizes and the heat dissipation hole reference size. The cutting database is a manually set database and will not be described in detail here.

[0199] Step 404: determining the heat dissipation hole cutting position according to the heat dissipation hole size and the reference heat dissipation hole size, and controlling a preset cutting device to cut the heat dissipation hole cutting position according to the cutting value.

[0200] The cutting device is a preset laser cutting machine. The heat dissipation hole cutting position refers to the range position of cutting the heat dissipation hole 5. The heat dissipation hole size is compared with the heat dissipation hole reference size to obtain a deviation area, which is defined as the heat dissipation hole cutting position, and the laser cutting machine is controlled to cut the heat dissipation hole cutting position with the cutting value.

[0201] Dimension detection methods also include:

[0202] Step 500: When the abnormal size position falls into a preset bending contact area, determine whether the heat dissipation hole size is greater than the heat dissipation hole reference size.

[0203] The bent contact area refers to the area with the bent solder joint 6 in the stacked copper busbar 3, that is, the area corresponding to the first contact plate 11 of the stacked copper busbar 3. When the abnormal size position falls into the bent contact area, it is determined whether the heat dissipation hole size is greater than the heat dissipation hole reference size, thereby determining whether the heat dissipation hole size is normal.

[0204] Step 5000: If the heat dissipation hole size is larger than the heat dissipation hole reference size, a deviation size is determined according to the heat dissipation hole size and the reference heat dissipation hole size, and the copper bar inclination is determined according to the deviation size and the abnormal size position.

[0205] The copper bar inclination refers to the estimated inclination of the stacked copper bar 3 at the bending solder joint 6 and after welding on the capacitor core 2. If the heat dissipation hole size is larger than the heat dissipation hole reference size, it means that the heat dissipation hole size is too large, and the deviation value between the heat dissipation hole size and the reference heat dissipation hole size is calculated to obtain the deviation size, and the deviation size is input into the preset inclination database to obtain the copper bar inclination. The inclination database stores the inclination of the copper bar corresponding to each deviation size. The inclination database is a database set by humans and will not be described in detail here.

[0206] Step 501: When the inclination of the copper bar does not fall into the preset reference stable interval, a missing repair value is determined according to the deviation size, and a preset material filling device is controlled to manufacture a repair block with the missing repair value.

[0207] The reference stability interval refers to the interval value in which the stacked copper busbar 3 can be stabilized after tilting when the bending solder joint 6 is welded on the capacitor core 2. The filling device is a 3D printer. The missing repair value refers to the value that needs to be filled by calculating the deviation size of the actual tilt of the stacked copper busbar 3 and the thickness value of the copper busbar. The thickness value of the copper busbar is determined by the model information. The model information is input into a preset thickness database to obtain the thickness value of the copper busbar. The thickness database stores the thickness values ​​corresponding to each model. The repair block refers to a component manufactured by the missing repair value for correcting the inclination of the copper busbar.

[0208] When the inclination of the copper busbar does not fall into the preset reference stability range, the missing repair value is determined by the deviation size, and the 3D printer is controlled to manufacture a repair block with the missing repair value.

[0209] When the inclination of the copper busbar falls into the preset reference stability range, the detection is completed.

[0210] Step 502: Control a preset clamping device to repair the repair block using a preset welding method.

[0211] The clamping device is a preset manipulator. The welding method refers to welding by preset laser welding. The manipulator is controlled to clamp the repair block to the abnormal size position, and the laser welding is controlled to weld the repair block to the heat dissipation hole 5 at the abnormal size position, so as to repair the abnormal size position on the stacked copper busbar 3.

[0212] Step 5001: If the heat dissipation hole size is not greater than the heat dissipation hole reference size, a deviation area is determined according to the heat dissipation hole size and the heat dissipation hole reference size, and the deviation area is defined as an inclined cutting position.

[0213] The deviation area refers to the redundant range of the heat dissipation hole 5 on the stacked copper busbar 3. The inclined cutting position refers to the position where the heat dissipation hole 5 is cut. If the heat dissipation hole size is not larger than the heat dissipation hole reference size, it means that the heat dissipation hole size is too small. The heat dissipation hole size is compared with the heat dissipation hole reference size to obtain the deviation area, and the deviation area is defined as the inclined cutting position.

[0214] Step 503: determining a cutting value from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size.

[0215] The cutting value refers to the parameter value required to cut the heat dissipation hole 5. The cutting database stores cutting values ​​corresponding to the difference between different heat dissipation hole sizes and the heat dissipation hole reference size. The difference between the heat dissipation hole size and the heat dissipation hole reference size is calculated, and the calculated difference is input into the cutting database to obtain the cutting value.

[0216] Step 504: Control a preset cutting device to cut the inclined cutting position with the cutting value.

[0217] The cutting device is a preset laser cutting machine, which controls the laser cutting machine to cut the cutting position according to the cutting value, thereby correcting the heat dissipation hole 5 with a size that is too small.

[0218] Fixed detection methods include:

[0219] Step 600: Determine a reference pulling image, pulling force and pulling position according to the model information.

[0220] The model information includes a reference pulling image, a pulling force and a pulling position. The corresponding reference pulling image, a pulling force and a pulling position are retrieved from a model database through the model information, thereby determining the reference pulling image, a pulling force and a pulling position.

[0221] Step 601: Based on the pulling position, a preset pulling device is controlled to fix the stacked copper busbar 3 and the capacitor core 2, and based on the pulling force, the pulling device is controlled to pull the stacked copper busbar 3 and the capacitor core 2, and pulling image information is obtained.

[0222] The pulling image information refers to a picture of the stacked copper busbar 3 and the capacitor core 2 being pulled, which is obtained through a camera. The pulling device is a preset sucker, which is pulled by controlling the sucker through a cylinder. The sucker is controlled to suck and fix the stacked copper busbar 3 and the capacitor core 2 through the pulling position, and the pulling device is controlled by the pulling force to pull the straight contact area and the curved contact area at the same time, and the pulling image information is obtained through the camera.

[0223] Step 602: Determine whether the pulling image information is consistent with the reference pulling image.

[0224] It is determined whether the pulling image information is consistent with the reference pulling image, so as to determine whether the stacked copper busbar 3 and the capacitor core 2 are stable after welding.

[0225] Step 6020: If the pulling image information is consistent with the reference pulling image, the detection is completed.

[0226] If the pulling image information is consistent with the reference pulling image, it means that the stacked copper busbar 3 and the capacitor core 2 are stable after welding, and the detection is completed.

[0227] Step 6021: If the pulling image information is inconsistent with the reference pulling image, the pulling abnormality position and the looseness value are determined according to the pulling image information and the reference pulling image.

[0228] The pulling abnormal position refers to the position where the actual pulling situation is inconsistent with the benchmark pulling image when the welded stacked copper bar 3 is pulled. The loose value refers to the degree of looseness in the welded position of the stacked copper bar 3 during the pulling process. If the pulling image information is inconsistent with the benchmark pulling image, it means that the stacked copper bar 3 is unstable after being welded with the capacitor core 2. A coordinate system is established in the pulling image information, and the loose coordinate point is marked when pulling. This coordinate point is the pulling abnormal position. The displacement distance of the loose coordinate point is marked when pulling by real-time detection, thereby analyzing and obtaining the loose value.

[0229] Step 603: Determine whether the looseness value is within a preset reference repair interval.

[0230] Determine whether the looseness value is within the preset benchmark repair range to determine whether it can be repaired.

[0231] Step 6030: If the looseness value falls into the reference repair interval, the looseness repair fluid value is determined according to the looseness value, and the preset repair device is controlled to repair the abnormal pulling position with the looseness repair fluid value.

[0232] The repair fluid value refers to the value of the repair fluid used to repair the loose position. Different loose values ​​correspond to different loose repair fluid values. The repair device is an electric welder. If the loose value falls into the reference repair interval, it means that it can be repaired. The corresponding loose repair fluid value is determined by the loose value, and the electric welder is controlled to repair the abnormal pulling position with the loose repair fluid value.

[0233] Step 604: Control a preset cooling device to cool down the abnormal pulling position, and re-control the pulling device to pull, and obtain the pulling image information after pulling, until the pulling image information is consistent with the reference pulling image.

[0234] The cooling device is a hair dryer. The hair dryer is controlled to cool down the abnormal pulling position after repair, and the pulling device is re-controlled to pull. The pulling image information after pulling is obtained through the camera until the pulling image information is consistent with the reference pulling image, and the detection is completed.

[0235] Step 6031: If the looseness value does not fall into the benchmark repair interval, the copper busbar block is removed according to the abnormal pulling position, the preset removal device is controlled to separate the removed copper busbar block from the capacitor core 2, and the preset clamping device is controlled to clamp the removed copper busbar block to the preset waste area.

[0236] The removed copper busbar block refers to the stacked copper busbar 3 that needs to be removed. The removal device is a preset laser cutting machine. The clamping device is a preset manipulator. If the looseness value does not fall into the benchmark repair interval, indicating that it cannot be repaired, the removed copper busbar block that needs to be removed is determined by pulling the abnormal position, and the laser cutting machine is controlled to separate the stacked copper busbar 3 corresponding to the removed copper busbar block from the capacitor core 2, and the manipulator is controlled to clamp the stacked copper busbar 3 corresponding to the removed copper busbar block to the preset waste area.

[0237] The method further includes the following steps after the pulling image information is consistent with the reference pulling image:

[0238] Step 7000: Obtain the angle detection value and the reference angle value in the detection area.

[0239] The angle detection value refers to the angle detection value on the capacitor core 2 after the stacked copper busbar 3 is welded to the capacitor core 2. The angle detection value is obtained by using a preset camera to perform feature recognition on the connection section and the interference section of the bent solder joint 6 after welding, and determine the inclination, which is used as the angle detection value. The reference angle value refers to the standard angle detection value on the capacitor core 2 after the stacked copper busbar 3 is welded. The angle detection value in the detection area is obtained by the angle sensor. The corresponding reference angle value is retrieved from the model database through the model information to determine the reference angle value.

[0240] Step 7001: Determine whether the angle detection value is consistent with the reference angle value.

[0241] It is determined whether the angle detection value is consistent with the reference angle value, thereby determining whether the angle of the stacked copper busbar 3 on the capacitor core 2 is correct.

[0242] Step 70010: If the angle detection value is consistent with the reference angle value, the detection is completed.

[0243] If the angle detection value is consistent with the reference angle value, it means that the angle of the bent portion of the bent solder joint 6 on the capacitor core 2 is correct, and the detection is completed.

[0244] Step 70011: If the angle detection value is inconsistent with the reference angle value, the angle difference between the angle detection value and the reference angle value is calculated, and the position corresponding to the angle difference is used as the angle abnormality position.

[0245] If the angle detection value is inconsistent with the reference angle value, it means that the angle of the stacked copper busbar 3 on the capacitor core 2 is incorrect. The difference between the angle detection value and the reference angle value is calculated to obtain the angle difference, and the position corresponding to the angle difference is used as the angle abnormality position.

[0246] Step 7002: Determine the adjustment amount according to the angle difference, control the preset dismantling device to dismantle the position with abnormal angle, and re-weld with the adjustment amount.

[0247] The adjustment amount refers to the welding rod amount parameter adjusted when welding the stacked copper busbar 3. The removal device is a preset laser cutting machine. Different angle differences correspond to different adjustment amounts. The adjustment amount is obtained by analyzing the angle difference, and the laser cutting machine is controlled to remove the welding points of the stacked copper busbar 3 corresponding to the abnormal angle position, and re-weld with the adjustment amount.

[0248] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for detecting a vehicle-mounted DC filter capacitor, characterized in that: Applied to a vehicle-mounted DC filter capacitor, the vehicle-mounted DC filter capacitor includes: A housing (1) is placed in the vehicle and has a cavity preset therein; A capacitor core (2) is used for storing and releasing electric charge, and is provided in plurality and arranged in a vertical matrix in the cavity of the housing (1); A stacked copper busbar (3) abuts against the capacitor core (2) and is used for connecting to the outside world; A heat dissipation aluminum plate (4), arranged on the housing (1) and used to dissipate heat from the stacked copper busbar (3); A bent soldering point (6) for abutting the capacitor core (2) is arranged on the side of the stacked copper bar (3) close to the heat dissipation aluminum plate (4), and the bent soldering point (6) is used to create a gap between the stacked copper bar (3) and the capacitor core (2); a straight soldering point (7) for abutting the capacitor core (2) is arranged on the side of the stacked copper bar (3) away from the heat dissipation aluminum plate (4); a plurality of heat dissipation holes (5) are provided on the stacked copper bar (3), and the plurality of heat dissipation holes (5) correspond to the bent soldering points (6) and the straight soldering points (7) respectively; and a fixing hole (10) for placing and fixing the heat dissipation aluminum plate (4) is provided on the housing (1); The method specifically includes: obtaining image detection information in a preset detection area; Select the copper busbar image according to the image detection information and the preset copper busbar feature frame; Determine the model information from a preset model database according to the copper busbar image; Determine the reference bending degree according to the model information; Determining the detection bending degree of the bending solder joint (6) according to the copper busbar image; Determine whether the reference curvature is consistent with the test curvature; If the reference bending degree is consistent with the detection bending degree, the detection is completed and the detection is performed using a preset crack detection method, wherein the crack detection method is to detect whether the stacked copper busbar (3) has cracks; If the reference bending degree is inconsistent with the detection bending degree, mark the abnormal bending position from the copper busbar image; Determine the bending difference according to the reference bending degree and the detection bending degree; Determine the bending degree based on the abnormal bending position and the bending difference; According to the abnormal bending position, the preset bending device is controlled to bend with a bending degree, and the image detection information is updated until the reference bending degree is consistent with the detected bending degree.

2. The detection method of a vehicle-mounted DC filter capacitor according to claim 1, characterized in that: When the reference curvature is consistent with the copper busbar curvature, the crack detection method includes: Determine whether the copper busbar image contains a preset crack feature; If the copper busbar image does not contain crack features, the detection is completed and the detection is performed using a preset length detection method, wherein the length detection method refers to the detection of the contact length value of the stacked copper busbar (3) and the capacitor core (2) welded thereto; If the copper busbar image contains crack features, the crack position and crack area are determined according to the copper busbar image; Determining whether the crack area falls within a preset reference area interval; If the crack area falls within the reference area interval, the impurity value is determined based on the copper busbar image and the crack position; Determine the inhalation force and inhalation time according to the impurity value; Control the preset cleaning device to suck air from the cracked position with suction force and suction time, and update the copper busbar image until no impurities are contained; Determine the value of crack repair fluid according to the crack area; Acquiring the copper bar evenness of the stacked copper bar (3) according to the copper bar image, determining the clamping state according to the copper bar evenness and controlling a preset joining device to clamp the crack position, controlling a preset repairing device to inject a crack repairing liquid into the crack position, and performing detection using a preset length detection method; If the crack area does not fall within the reference area interval, the preset clamping device is controlled to clamp the copper bar corresponding to the crack position to the preset waste area.

3. The detection method of a vehicle-mounted DC filter capacitor according to claim 2, characterized in that: Length detection methods include: Obtain copper busbar image information in the detection area; Determine the contact length value according to the copper busbar image information; Determine the reference length value according to the model information; Determine whether the contact length value is consistent with the reference length value; If the contact length value is consistent with the reference length value, the detection is completed and the detection is performed using a preset size detection method, wherein the size detection method refers to detecting the size of the heat dissipation hole (5) of the stacked copper busbar (3); If the contact length value is inconsistent with the reference length value, the abnormal length position is determined according to the copper busbar image information, and the length difference is calculated according to the contact length value and the reference length value; When the length difference is a positive value, the contact cutting position is determined according to the length difference and the length abnormal position, the preset cutting device is controlled to perform cutting at the contact cutting position to obtain a cutting block, and the preset clamping device is controlled to clamp the cutting block to a preset melting preparation area; When the length difference is a negative value, the feeding value is determined according to the length difference and the model information, and the preset feeding device is controlled to produce the feeding strip according to the feeding value; The preset clamping device is controlled to repair the filler strip using a preset welding method.

4. The detection method of a vehicle-mounted DC filter capacitor according to claim 3 is characterized in that: Dimension detection methods include: Determining the heat dissipation hole size of the stacked copper busbar (3) from a preset size database according to the image detection information; Determine the base size of the heat dissipation hole according to the model information; Determine whether the heat dissipation hole size is consistent with the heat dissipation hole reference size; If the heat dissipation hole size is consistent with the heat dissipation hole reference size, continue testing; If the heat dissipation hole size is inconsistent with the heat dissipation hole reference size, the size deviation information between the heat dissipation hole size and the heat dissipation hole reference size is calculated, and the position corresponding to the size deviation information in the image detection information is defined as the size abnormal position; When the abnormal size position falls into the preset straight contact area, determine whether the heat dissipation hole size is larger than the heat dissipation hole reference size; If the heat dissipation hole size is larger than the heat dissipation hole reference size and falls within the preset maximum range, the detection is completed; If the heat dissipation hole size is larger than the heat dissipation hole reference size and does not fall within the preset maximum range, controlling a preset clamping device to clamp the stacked copper busbar (3) to a preset waste area; If the heat dissipation hole size is not larger than the heat dissipation hole reference size, a cutting value is determined from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size; The heat dissipation hole cutting position is determined according to the heat dissipation hole size and the heat dissipation hole reference size, and a preset cutting device is controlled to cut the heat dissipation hole cutting position according to the cutting value.

5. The detection method of a vehicle-mounted DC filter capacitor according to claim 4, characterized in that: Dimension detection methods also include: When the abnormal size position falls into the preset bending contact area, determining whether the heat dissipation hole size is larger than the heat dissipation hole reference size; If the heat dissipation hole size is larger than the heat dissipation hole reference size, the deviation size is determined based on the heat dissipation hole size and the heat dissipation hole reference size, and the copper bar inclination is determined based on the deviation size and the abnormal size position; When the inclination of the copper bar does not fall into the preset reference stable interval, the missing repair value is determined according to the deviation size, and the preset material filling device is controlled to manufacture a repair block with the missing repair value; Controlling a preset clamping device to repair the repair block by a preset welding method; If the heat dissipation hole size is not larger than the heat dissipation hole reference size, a deviation area is determined according to the heat dissipation hole size and the heat dissipation hole reference size, and the deviation area is defined as an inclined cutting position; Then, the cutting value is determined from a preset cutting database according to the heat dissipation hole size and the heat dissipation hole reference size; The preset cutting device is controlled to cut the inclined cutting position with the cutting value.

6. The detection method of a vehicle-mounted DC filter capacitor according to claim 1, characterized in that: After the stacked copper busbar (3) and the capacitor core (2) are welded, a preset fixed detection method is used for detection, wherein the fixed detection method comprises: Determine the reference pulling image, pulling force and pulling position according to the model information; Based on the pulling position, a preset pulling device is controlled to fix the stacked copper busbar (3) and the capacitor core (2), and based on the pulling force, the pulling device is controlled to pull the stacked copper busbar (3) and the capacitor core (2), and pulling image information is obtained; Determine whether the pulled image information is consistent with the reference pulled image; If the pulled image information is consistent with the reference pulled image, the detection is completed; If the pulling image information is inconsistent with the reference pulling image, the pulling abnormal position and the looseness value are determined according to the pulling image information and the reference pulling image; Determine whether the looseness value is within the preset benchmark repair interval; If the looseness value falls within the reference repair interval, the looseness repair fluid value is determined according to the looseness value, and the preset repair device is controlled to repair the abnormal pulling position with the looseness repair fluid value; Controlling a preset cooling device to cool down the abnormal pulling position, and re-controlling the pulling device to pull, and obtaining the pulling image information after the pulling, until the pulling image information is consistent with the reference pulling image; If the looseness value does not fall within the reference repair interval, the copper busbar block is removed according to the abnormal pulling position, a preset removal device is controlled to separate the removed copper busbar block from the capacitor core (2), and a preset clamping device is controlled to clamp the removed copper busbar block to a preset waste area.

7. A method for detecting a vehicle-mounted DC filter capacitor according to claim 6, characterized in that: The method further includes the following steps after the pulling image information is consistent with the reference pulling image: Obtain the angle detection value and the reference angle value in the detection area; Determine whether the angle detection value is consistent with the reference angle value; If the angle detection value is consistent with the reference angle value, the detection is completed; If the angle detection value is inconsistent with the reference angle value, the angle difference between the angle detection value and the reference angle value is calculated, and the position corresponding to the angle difference is used as the angle abnormality position; The adjustment amount is determined according to the angle difference, and the preset dismantling device is controlled to dismantle the position with abnormal angle, and re-weld with the adjustment amount.

8. The method for detecting a vehicle-mounted DC filter capacitor according to claim 1, characterized in that: A fixing plate (8) for fixing to the housing (1) is laser welded on the stacked copper busbar (3).

9. A method for detecting a vehicle-mounted DC filter capacitor according to claim 8, characterized in that: It also comprises an epoxy resin layer (9), the epoxy resin layer (9) being located in the cavity of the housing (1), and the epoxy resin layer (9) being used to cover and wrap the stacked copper busbar (3) and the capacitor core (2).

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