A method for insulating the periphery of a laminated busbar

Abstract

This invention discloses a method for insulating and encapsulating the periphery of a laminated busbar, belonging to the field of busbar encapsulation technology. The method involves fabricating an insulating tape, wrapping and pressing it into an encapsulation groove formed between the edges of the bottom and top insulating plates on the outer periphery of the laminated busbar, and ensuring a sealed bond between the insulating tape and the groove walls. The width of the insulating tape is at least smaller than the width of the encapsulation groove, creating glue-filled gaps between the two sides of the tape and the side walls of the groove. Its advantage lies in that, compared to existing techniques using injection encapsulation which requires more than ten hours of curing within the encapsulation period, this invention can improve encapsulation efficiency by nearly a hundred times while maintaining encapsulation quality.

Description

Technical Field

[0001] This invention relates to a method for insulating and encapsulating the periphery of a multilayer busbar, belonging to the field of busbar encapsulation technology. Background Technology

[0002] Laminated busbars are widely used as high-end power electronic connectors, featuring multiple external interfaces. They are typically constructed by bonding multiple conductive plates and insulating plates together. Specifically, the laminated busbar has a bottom insulating plate and a top insulating plate on its bottom and top surfaces, respectively. Multiple conductive plates can be placed between the bottom and top insulating plates, with interphase insulating plates between adjacent conductive plates. To absolutely guarantee the insulation performance of the laminated busbar, the exposed sides of the conductive plates on the outer perimeter of the laminated busbar between adjacent insulating plates must be sealed with adhesive.

[0003] The existing method for sealing laminated busbars with adhesive involves making the peripheral edges of the conductive plate and the interphase insulating plate flush, while extending the peripheral edges of the bottom and top insulating plates outwards to form an encapsulation groove between the peripheral edges of the bottom and top insulating plates. Adhesive is then filled into the encapsulation groove between the peripheral edges of the bottom and top insulating plates. After the adhesive solidifies, the outer periphery of the laminated busbar is sealed with insulation.

[0004] The above-mentioned adhesive is a polyurethane adhesive. After curing, it can withstand high temperatures of 125°C, is not prone to aging, has good adhesion to the contact body, excellent insulation properties, and has a smooth surface after curing, making it the first choice for sealing the perimeter of laminated busbars.

[0005] The aforementioned polyurethane adhesive exhibits strong fluidity in its liquid state, especially when the adhesive is thick, and has a long curing time, requiring approximately 4 hours at room temperature. This results in very low processing efficiency for encapsulating the outer periphery of laminated busbars using existing technologies, primarily manifested in the following ways:

[0006] During encapsulation, only one side of the outer periphery of the stacked busbar can be facing upwards and kept horizontal. Polyurethane adhesive is injected into the groove between the edge of the bottom insulating plate and the edge of the top insulating plate on that side. Only after the polyurethane adhesive on that side has completely lost its fluidity (about 3 hours) can the stacked busbar be rotated to encapsulate the next side. Usually, the stacked busbar is quadrilateral, so it must be rotated at least four times for encapsulation. Thus, it takes at least ten hours to complete the encapsulation of the outer periphery of one stacked busbar. Summary of the Invention

[0007] The technical problem to be solved by the present invention is: how to quickly complete the insulating encapsulation of the outer periphery of the stacked busbar.

[0008] To address the above problems, the technical solution proposed by this invention is as follows:

[0009] A method for insulating and encapsulating the periphery of a laminated busbar involves making an insulating tape, wrapping and pressing it around the encapsulation groove formed between the edges of the bottom insulating plate and the top insulating plate on the outer periphery of the laminated busbar, and forming a sealed bond between the insulating tape and the groove wall.

[0010] Furthermore, the width of the manufactured insulating tape is at least smaller than the width of the encapsulation trench, so that there are adhesive-filling gaps between the two sides of the insulating tape pressed into the encapsulation trench and the side walls of the encapsulation trench. The insulating encapsulation includes the following steps:

[0011] A1. Apply adhesive to the bottom surface of the insulating tape;

[0012] A2. Fix one end of the insulating tape to one of the encapsulation grooves on the outer periphery of the laminated busbar;

[0013] A3. Wrap the insulating tape around the encapsulation groove once, and while wrapping, slide and press the insulating tape that has entered the encapsulation groove so that the adhesive on the bottom surface of the insulating tape is squeezed into the filling gap on both sides.

[0014] A4. Scrape off any excess adhesive;

[0015] A5. Allow to dry and solidify naturally.

[0016] Furthermore, step A1, which involves adhering adhesive to the bottom surface of the insulating tape, includes setting an adhesive-absorbing structure on the bottom surface of the insulating tape. This adhesive-absorbing structure includes several adhesive-containing grooves arranged laterally.

[0017] Furthermore, step A1, which involves coating the bottom surface of the insulating tape with adhesive, also includes setting up an impregnation tank. Positioning rollers are horizontally positioned at the opening of the impregnation tank. During application, the insulating tape enters the impregnation tank from behind the positioning rollers and moves forward and downward. After passing over the positioning rollers along their lower side, the tape extends forward and upward through the impregnation tank and is continuously dragged forward. When passing over the lower side of the positioning rollers, the absorbent structure on the bottom surface of the insulating tape is submerged below the liquid level of the adhesive in the impregnation tank.

[0018] Furthermore, step A1, which involves adhering the adhesive to the bottom surface of the insulating tape, also includes the following measures:

[0019] The glue-containing tank is tilted backward with the opening facing backward and the distance between the glue-containing tanks is reduced so that the transverse spacer between adjacent glue-containing tanks forms a clip that can be elastically deformed.

[0020] An elastic clamping plate with clamping force provided by a compression spring is set on the rear side of the positioning roller. The elastic clamping plate applies elastic pressure to the positioning roller on the insulating tape that is about to enter the adhesive, causing the clamping piece to deform until the adhesive-containing groove temporarily disappears to expel the contained air. After the clamped piece is submerged below the liquid level of the adhesive along with the insulating tape, it automatically expands to restore the adhesive-containing groove, allowing the adhesive-containing groove to absorb the adhesive.

[0021] Furthermore, a clamp with a rotatable clamping member is provided in front of the impregnation tank. The stacked busbar to be encapsulated is clamped on the rotatable clamping member. The upper side of the clamped stacked busbar is higher than the impregnation tank. The stacked busbar is rotated by the rotatable clamping member to drag the insulating tape forward, thereby achieving the winding of the insulating tape around the encapsulation groove once as described in step A3.

[0022] Furthermore, to achieve the step A3 of wrapping the insulating tape around the encapsulation groove once, the following measures are also included:

[0023] Set up a release tape for continuous operation. Before step A1 begins, stick multiple insulating tapes onto the release tape at a set interval, and leave a gap in the release tape before the first insulating tape. The release tape is not elastic.

[0024] On the left and right sides of the front end of the insulating tape, a front left hook and a front right hook are respectively provided. On the left and right sides of the rear end of the insulating tape, a rear left hook and a rear right hook are respectively provided. On the edges of the top and bottom insulating plates on both sides of the sealing groove, a left hanging groove and a right hanging groove are symmetrically provided. The left hanging groove can accommodate the front left hook and the rear left hook, and the right hanging groove can accommodate the front right hook and the rear right hook.

[0025] The steps described in step A3, which involve wrapping the insulating tape around the encapsulation groove, include the following:

[0026] B1. Pass the remaining section of the release strip through the space between the elastic clamp and the positioning roller, then drag it forward and upward around the lower side of the positioning roller to the upper side of the clamped stacked busbar and hold it there.

[0027] B2. Pour the adhesive liquid in the impregnation tank to the set liquid level line height;

[0028] B3. Drag the remaining section of the release tape so that the insulating tape to be pasted behind it can be dragged forward and upward around the lower side of the positioning roller to execute step A1.

[0029] B4. Continue to drag the remaining section of the release tape until the front end of the insulating tape is located at the left and right hanging slots of the laminated busbar. Insert the front left hanging ear and the front right hanging ear into the rear of the left hanging slot and the rear of the right hanging slot respectively to complete step A2.

[0030] B5. Rotate the stacked busbar one revolution;

[0031] After rotating the stacked busbar one revolution while simultaneously pressing the insulating tape completely into the encapsulation groove, the rear end of the insulating tape is located at the left and right hanging slots of the stacked busbar. The rear left and rear right hanging ears are then inserted into the rear of the left hanging slot and the front of the right hanging slot, respectively, to complete step A3.

[0032] Furthermore, to achieve the sliding and pressing action described in step 3 along the insulating tape that has entered the encapsulation groove, the insulating tape is slid and pressed upward relative to the downward rotating insulating tape on the front side of the stacked busbar, forcing the adhesive adhering to the bottom surface of the insulating tape to overflow from the filling gaps on both sides, so that the filling gaps are filled with adhesive.

[0033] Furthermore, the upward sliding pressure on the front side of the stacked busbar relative to the downward rotating insulating tape is achieved by providing a cantilever above the front part of the rotatable clamp, and providing a pressure finger at the lower end of the cantilever to apply pressure to the downward rotating insulating tape on the front side of the stacked busbar.

[0034] Furthermore, a limiting groove is set on the bottom surface of the insulating tape along the length direction, so that the edge of the interphase insulating plate in the stacked busbar protrudes outward relative to the outer side of the conductive plate. When the insulating tape is wrapped in the encapsulation groove, the protruding part of the interphase insulating plate is inserted into the limiting groove to implement lateral limiting of the insulating tape, ensuring that there is an equal gap between the two sides of the insulating tape and the two side walls of the encapsulation groove.

[0035] Beneficial effects: Since this solution does not require the use of a large amount of fluid adhesive in the encapsulation trench, and does not require a dedicated curing time in the encapsulation operation area, the encapsulation of the periphery of the stacked busbar can be completed in just a few minutes through winding and pressing in the encapsulation operation area. Thus, compared with the existing encapsulation method that requires more than ten hours of curing in the operation encapsulation area, this application can improve the encapsulation efficiency by nearly a hundred times while ensuring the encapsulation quality. Attached Figure Description

[0036] Figure 1 This is a three-dimensional schematic diagram of the stacked busbar described in Embodiment 1;

[0037] Figure 2 This is a three-dimensional schematic diagram of the insulating tape described in Example 1;

[0038] Figure 3 for Figure 2 Thumbnail view of insulating tape after it has been broken in the middle;

[0039] Figure 4 for Figure 3 A partial schematic diagram;

[0040] Figure 5 This is a planar schematic diagram of the insulating tape temporarily bonded to the release liner at a set interval, as described in Example 1.

[0041] Figure 6 This refers to the empty section of release tape left before the first insulating tape bonded to the release tape as described in Example 1;

[0042] Figure 7The figures show a cross-sectional schematic diagram of the insulating tape described in Example 1 and a partial cross-sectional schematic diagram of the laminated busbar. The figures mainly show the structural comparison of the matching of the limiting groove and the protruding edge of the phase insulation plate.

[0043] Figure 8 This is a three-dimensional schematic diagram of the impregnation tank and fixtures as described in Embodiment 1, showing that the impregnation tank and fixtures are mounted on the same frame.

[0044] Figure 9 This is a three-dimensional schematic diagram of the impregnation tank described in Example 1;

[0045] Figure 10 for Figure 9 A partial schematic diagram;

[0046] Figure 11 This is a three-dimensional schematic diagram of the rotatable clamping component described in Embodiment 1;

[0047] Figure 12 This is a disassembly diagram of the right clamping plate, right rotating shaft, internal threaded sleeve, and bearing described in Embodiment 1;

[0048] Figure 13 This is a three-dimensional schematic diagram of the process of wrapping insulating tape using an impregnation tank and a fixture in Embodiment 1. The diagram shows that the front end of the insulating tape is fixed in the encapsulation groove of the laminated busbar.

[0049] Figure 14 for Figure 13 A partial schematic diagram shows the front left and front right hanging ears of the insulating tape being inserted into the left and right hanging slots, respectively.

[0050] Figure 15 This is a simplified planar schematic diagram illustrating the application of release tape to adhesive and wrap insulating tape in Example 1.

[0051] Figure 16 for Figure 15 A partial schematic diagram;

[0052] Figure 17 for Figure 16 A partial schematic diagram shows the process where, before the insulating tape enters the glue-impregnating tank, its bottom clips are pressed by elastic plates, causing the glue-containing tank to gradually disappear. After entering the glue-containing tank, the clips open using their own elasticity, allowing the glue-containing tank to recover.

[0053] Figure 18 for Figure 15 A partial schematic diagram shows the pressure pointing towards the encapsulation trench pressing the insulating tape, with arrow A indicating that the front end of the stacked busbar rotates downwards;

[0054] Figure 19 This is a cross-sectional schematic diagram of the insulating tape filled in the encapsulation trench as described in Example 1;

[0055] Figure 20 This is a three-dimensional schematic diagram of the cantilever with a heavy-duty arm installed as described in Embodiment 2.

[0056] In the diagram: 1. Insulating tape; 101. Adhesive-containing groove; 102. Clamping piece; 103. Front left hanging ear; 104. Front right hanging ear; 105. Rear left hanging ear; 106. Rear right hanging ear; 107. Limiting groove; 2. Release strip; 201. Empty section; 3. Adhesive-impregnated tank; 301. Positioning roller; 4. Elastic clamping plate; 401. Compression spring; 5. Clamp; 501. Rotatable clamping component; 5011. Left clamping plate; 5012. Right clamping plate; 5013. Left rotating shaft; 5014. Right rotating shaft; 5015. Internal threaded sleeve; 5016. Handle 5017, Bearing; 502, Support; 5021, Left Support; 5022, Right Support; 503, Motor; 6, Cantilever; 601, Pressure Finger; 602, Heavy-duty Arm; 6021, Counterweight Frame; 6022, Counterweight Block; 7, Hanging Post; 701, Elastic Clamp; 8, Laminated Busbar; 801, Bottom Insulation Plate; 8011, Right Side Hanging Slot; 802, Top Insulation Plate; 8021, Left Side Hanging Slot; 803, Phase-to-Phase Insulation Plate; 804, Conductive Plate; 800, Encapsulation Groove; 9, Filling Gap; 10, Liquid Level Line. Detailed Implementation

[0057] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0058] Example 1: As Figure 1 , 2 As shown in Figures 15 and 19, a method for insulating and encapsulating the periphery of a laminated busbar involves fabricating an insulating tape 1 and wrapping and pressing it around the outer periphery of the laminated busbar 8 into an encapsulation groove 800 formed between the edges of the bottom insulating plate 801 and the top insulating plate 802, thus creating a sealed bond between the insulating tape 1 and the groove wall of the encapsulation groove 800. Because the insulating tape 1 forms a sealed bond with the groove wall of the encapsulation groove 800, the insulating and encapsulating effect is identical to that of glue injection encapsulation. Since this method does not require the use of a large amount of fluid adhesive within the encapsulation groove 800, nor does it require a dedicated curing time during the encapsulation operation period, the encapsulation of the periphery of the laminated busbar can be completed in just a few minutes through wrapping and pressing. Therefore, compared to the existing glue injection encapsulation method which requires more than ten hours of curing time during the operation period, this application can improve encapsulation efficiency by nearly a hundred times while ensuring encapsulation quality.

[0059] To ensure that the insulating tape 1 achieves the same insulation effect as the glue encapsulation, the width of the insulating tape 1 is at least smaller than the width of the encapsulation groove 800, so that there are glue-filling gaps 9 between the two sides of the insulating tape 1 pressed into the encapsulation groove 800 and the side walls of the encapsulation groove 800. According to the above method, the insulation encapsulation includes the following steps:

[0060] A1. Apply adhesive to the bottom surface of insulating tape 1, as per the instructions. Figure 15-17 ;

[0061] A2. Fix one end of the insulating tape 1 to a point in the outer periphery encapsulation groove 800 of the laminated busbar 8, as shown in the figure. Figure 14 ;

[0062] A3. Wrap the insulating tape 1 around the encapsulation groove 800 once, and while wrapping, slide and press the insulating tape 1 that has entered the encapsulation groove 800 to squeeze the adhesive on the bottom surface of the insulating tape 1 into the filling gaps 9 on both sides, as shown in the figure. Figure 13 , 15 ;

[0063] A4. Scrape off any excess adhesive;

[0064] A5. Allow to dry and solidify naturally.

[0065] like Figure 2-4 As shown, step A1, which involves adhering adhesive to the bottom surface of the insulating tape 1, includes setting an adhesive-absorbing structure on the bottom surface of the insulating tape 1. The adhesive-absorbing structure includes a plurality of adhesive-containing grooves 101 arranged horizontally. By setting the adhesive-containing grooves 101, the bottom surface of the insulating tape 1 absorbs a sufficient amount of adhesive to fill the adhesive gap 9.

[0066] like Figure 8 , 9 As shown in 10, 13, 15, 16, and 17, step A1, which involves adhering the bottom surface of the insulating tape 1 to the adhesive liquid, also includes setting up an impregnation tank 3. A positioning roller 301 is horizontally set at the opening of the impregnation tank 3. In application, the insulating tape 1 enters the impregnation tank 3 from behind the positioning roller 301 and moves forward and downward. After passing over the positioning roller 301 along its lower side, the tape extends forward and upward from the impregnation tank 3 and is continuously dragged forward. When passing over the lower side of the positioning roller 301, the absorbent structure on the bottom surface of the insulating tape 1 is submerged below the liquid level 10 of the adhesive liquid in the impregnation tank 3, so that the adhesive tank absorbs the adhesive liquid.

[0067] Furthermore, step A1, which involves adhering the adhesive to the bottom surface of the insulating tape 1, also includes the following measures:

[0068] like Figure 4 As shown, the glue-containing tank 101 is inclined with the opening facing backward and the distance between the glue-containing tanks 101 is reduced, so that the transverse spacer between adjacent glue-containing tanks 101 forms an elastically deformable clamp 102.

[0069] like Figure 9 , 10 As shown in Figures 17 and 18, an elastic clamping plate 4, provided by a compression spring 401, is provided on the rear side of the positioning roller 301. The elastic clamping plate 4 applies elastic pressure to the positioning roller 301 on the insulating tape 1 that is about to enter the adhesive, causing the clamping piece 102 to deform until the adhesive-containing groove 101 temporarily disappears to expel the contained air. After the clamping piece 102 is submerged below the liquid level line 10 of the adhesive along with the insulating tape 1, it automatically expands and restores the adhesive-containing groove 101, so that the adhesive-containing groove 101 absorbs the adhesive.

[0070] like Figure 8 , 11 As shown in Figure -13, a clamp 5 with a rotatable clamping member 501 is provided in front of the impregnation tank 3. The stacked busbar 8 to be packaged is clamped on the rotatable clamping member 501. The upper side of the clamped stacked busbar 8 is higher than the impregnation tank 3. The stacked busbar 8 is rotated by the rotatable clamping member 501 to drag the insulating tape 1 forward, thereby achieving the step A3 of wrapping the insulating tape 1 around the packaging groove 800 once.

[0071] To achieve step A3, the process of wrapping the insulating tape 1 around the encapsulation groove 800 once also includes the following measures:

[0072] like Figure 5 , 6 As shown, a release tape 2 is set for continuous operation. Before the start of step A1, multiple insulating tapes 1 are glued to the release tape 2 at a set interval, and a blank section 201 of the release tape 2 is left in front of the first insulating tape 1. The release tape 2 is not elastic.

[0073] like Figure 3 , 14 As shown, on the left and right sides of the front end of the insulating tape 1, a front left hanging ear 103 and a front right hanging ear 104 protruding outwards are respectively provided. On the left and right sides of the rear end of the insulating tape 1, a rear left hanging ear 105 and a rear right hanging ear 106 protruding outwards are respectively provided. On the edges of the top insulating plate 802 and the bottom insulating plate 801 on both sides of the sealing groove 800, a left hanging groove 8021 and a right hanging groove 8011 are symmetrically provided. The left hanging groove 8021 can accommodate the front left hanging ear 103 and the rear left hanging ear 105, and the right hanging groove 8011 can accommodate the front right hanging ear 104 and the rear right hanging ear 106.

[0074] The steps described in step A3, which involve wrapping the insulating tape 1 around the encapsulation groove 800, using the above measures include the following steps:

[0075] B1. Pass the empty section 201 of the release belt 2 between the elastic clamping plate 4 and the positioning roller 301, then drag it forward and upward around the lower side of the positioning roller 301 to the upper side of the clamped stacked mother row 8 and hold it there, referring to... Figure 13 , 15 ;

[0076] B2. Pour the adhesive liquid in the impregnation tank 3 to the set liquid level line 10 height, referring to... Figure 13-17 ;

[0077] B3. Drag the empty section 201 of the release tape 2 so that the insulating tape 1 to be pasted behind it can be dragged forward and upward around the lower side of the positioning roller 301. Execute step A1, refer to... Figure 13 ;

[0078] B4. Continue dragging the remaining section 201 of the release tape 2 until the front end of the insulating tape 1 is located at the left hanging slot 8021 and the right hanging slot 8011 of the laminated busbar 8. Insert the front left hanging ear 103 and the front right hanging ear 104 into the rear of the left hanging slot 8021 and the rear of the right hanging slot 8011 respectively to complete step A2. Refer to... Figure 13 , 14 ;

[0079] B5. Rotate the stacked busbar 8 one revolution;

[0080] After rotating the stacked busbar 8 one revolution while simultaneously pressing the insulating tape 1 completely into the encapsulation groove 800, the rear end of the insulating tape 1 is positioned at the left hanging groove 8021 and the right hanging groove 8011 of the stacked busbar 8. The rear left hanging lug 105 and the rear right hanging lug 106 are then inserted into the rear of the left hanging groove 8021 and the front of the right hanging groove 8011, respectively, completing step A3. In this way, an insulating tape 1 is fixed in the encapsulation groove 800 of the stacked busbar 8. The release tape 2 can be removed at any time before removing excess adhesive.

[0081] like Figure 8 , 13 As shown, further, a hanging post 7 and an elastic clamping plate 701 are provided above the rotatable clamping member 501. The elastic clamping plate 701 is pressed against the hanging post 7 by its own elasticity to temporarily clamp the end of the release tape 2. Specifically, after completing the winding of a stacked busbar 8, the release tape located between the previous insulating tape 1 and the next insulating tape 1 that has been wound is cut off, and the end of the latter is clamped on the hanging post 7. After the next stacked busbar 8 is clamped, the pressurized end is removed and the next insulating tape 1 is wound around the outer periphery of the stacked busbar 8.

[0082] like Figure 8 , 13As shown in Figures 15 and 18, the sliding and pressing action of the insulating tape 1 that has entered the encapsulation groove 800 as described in step A3 involves sliding and pressing upward relative to the downwardly rotating insulating tape 1 on the front side of the stacked busbar 8. This forces the adhesive adhering to the bottom surface of the insulating tape 1 to overflow from the adhesive filling gaps 9 on both sides, filling the adhesive filling gaps 9 with adhesive. This upward sliding and pressing action on the front side of the stacked busbar 8 relative to the downwardly rotating insulating tape 1 is achieved by providing a cantilever 6 above the front of the rotatable clamp 501, with a pressure finger 601 at the lower end of the cantilever 6 capable of applying pressure to the downwardly rotating insulating tape 1 on the front side of the stacked busbar 8.

[0083] The reason for choosing to position the pressure finger 601 on the front side of the stacked busbar 8, so that the pressure finger 601 applies pressure to the insulating tape 1 into the encapsulation groove 800 of the stacked busbar 8, is that the stacked busbar 8 is designed to rotate clockwise, while the front side of the stacked busbar 8 rotates downward. When the pressure finger 601 presses on the downward rotating insulating tape 1, it slides upward relative to the insulating tape 1, which can squeeze the adhesive absorbed at the bottom of the insulating tape 1 upward. The adhesive squeezed upward from the bottom of the insulating tape 1 will flow outward under the action of gravity in the glue filling gap 9 reserved between the two sides of the insulating tape 1 and the two sides of the encapsulation groove 800, ensuring that the glue filling gap 9 is filled with adhesive.

[0084] like Figure 7 , 19 As shown, further, a limiting groove 107 is provided on the bottom surface of the insulating tape 1 along the length direction. The edge of the interphase insulating plate 803 in the stacked busbar 8 protrudes outward relative to the outer side of the conductive plate 804, so that when the insulating tape 1 is wrapped in the encapsulation groove 800, the protruding part of the interphase insulating plate 803 is inserted into the limiting groove 107 to implement lateral limiting of the insulating tape 1, ensuring that there are equal glue-filling gaps 9 between the two sides of the insulating tape 1 and the two side walls of the encapsulation groove 800.

[0085] like Figure 8 , 11As shown in Figure -13, here, a structural configuration of the aforementioned rotatable clamping member 501 is provided, which includes a left clamping plate 5011 and a left rotating shaft 5013 fixed to the left side of the left clamping plate 5011, a right clamping plate 5012 and a right rotating shaft 5014 fixed to the right side of the right clamping plate 5012, an internal threaded sleeve 5015 and a handle 5016 provided on the internal threaded sleeve 5015. The right rotating shaft 5014 is provided with an external thread, and the internal threaded sleeve 5015 is fitted onto the right rotating shaft 5014 through a threaded fit. The support 502 includes a left support 5021 and a right support 5022. The left clamping plate The left clamping plate 5011 and the right clamping plate 5012 are arranged facing each other. The left rotating shaft 5013 of the left clamping plate 5011 is mounted on the left support 5021. The left clamping plate 5011, together with the left rotating shaft 5013, can rotate on the left support 5021 but cannot move axially. The internal threaded sleeve 5015 is mounted on the right support 5022 through the bearing 5017. The right clamping plate 5012, the right rotating shaft 5014, and the internal threaded sleeve 5015 can rotate together. Rotating the internal threaded sleeve 5015 alone can make the right clamping plate 5012 move closer to or away from the left clamping plate 5011. In application, the stacked busbar 8 is clamped or unclamped by rotating the handle 5016. After clamping the stacked busbar 8, rotating the rotatable clamping member 501 will rotate the clamped stacked busbar 8.

[0086] A motor 503 is installed at the outer end of the left rotating shaft 5013 to drive the left rotating shaft 5013 to rotate. The rotation of the rotatable clamp 501 is powered by the motor 503. Furthermore, the motor 503 is a low-speed motor, and the speed can be controlled between 0.2 and 1 revolution per minute.

[0087] Alternatively, the stacked busbar 8 can be rotated directly by hand.

[0088] In this embodiment, pressure is applied directly to the pressure finger 601 by hand.

[0089] In this application, the adhesive can be a polyurethane adhesive, and the insulating tape can be made of other insulating materials, including polyurethane.

[0090] Example 2: As shown in 20, the difference from Example 1 is that a heavy pressure arm 602 extending forward is provided at the upper end of the cantilever 6 to provide backward pressure for the pressure finger 601. The front end of the heavy pressure arm is provided with a counterweight frame 6021, and a counterweight block 6022 is placed inside the counterweight frame 6021. The pressure required for the pressure finger 601 to press the insulating tape 1 is adjusted by adding or removing the counterweight block 6022.

[0091] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A method for insulating and encapsulating the periphery of a laminated busbar, characterized in that, An insulating tape (1) is prepared and wrapped and pressed into an encapsulation groove (800) formed between the edge of the bottom insulating plate (801) and the edge of the top insulating plate (802) on the outer periphery of the laminated busbar (8), so that the insulating tape (1) and the groove wall of the encapsulation groove (800) form a sealed bond; the width of the prepared insulating tape (1) is at least smaller than the width of the encapsulation groove (800), so that there are glue-filling gaps (9) between the two sides of the insulating tape (1) pressed into the encapsulation groove (800) and the side walls of the two sides of the encapsulation groove (800), respectively. The insulating encapsulation includes the following steps: A1. Apply adhesive to the bottom surface of the insulating tape (1); A2. Fix one end of the insulating tape (1) to a point in the outer periphery of the encapsulation groove (800) of the laminated busbar (8); A3. Wrap the insulating tape (1) around the encapsulation groove (800) once, and while wrapping, slide and press the insulating tape (1) that has entered the encapsulation groove (800) so that the adhesive on the bottom surface of the insulating tape (1) is squeezed into the glue filling gap (9) on both sides. A4. Scrape off any excess adhesive; A5. Allow to dry and solidify naturally; Step A1 describes making the bottom surface of the insulating tape (1) adhere to the adhesive liquid, which includes setting an adhesive absorption structure on the bottom surface of the insulating tape (1), the adhesive absorption structure including a plurality of adhesive-containing grooves (101) arranged laterally. Step A1, which involves coating the bottom surface of the insulating tape (1) with adhesive liquid, also includes setting up an impregnation tank (3). A positioning roller (301) is set horizontally at the opening of the impregnation tank (3). When in use, the insulating tape (1) enters the impregnation tank (3) from behind the positioning roller (301) and moves forward and downward. After passing around the positioning roller (301) along the lower side of the positioning roller (301), the tape extends forward and upward from the impregnation tank (3) and is continuously dragged forward. When passing around the lower side of the positioning roller (301), the absorbent structure on the bottom surface of the insulating tape (1) is submerged below the liquid level line (10) of the adhesive liquid in the impregnation tank (3).

2. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 1, characterized in that, Step A1, which involves adhering the adhesive to the bottom surface of the insulating tape (1), also includes the following measures: The glue-containing tank (101) is tilted backward and the distance between the glue-containing tanks (101) is reduced, so that the transverse spacer between adjacent glue-containing tanks (101) forms a clip (102) that can be elastically deformed. An elastic clamping plate (4) with clamping force provided by a compression spring (401) is provided on the rear side of the positioning roller (301). The elastic clamping plate (4) applies elastic pressure to the positioning roller (301) on the insulating tape (1) that is about to enter the adhesive liquid, so that the clamping piece (102) is deformed until the adhesive-containing groove (101) temporarily disappears and the contained air is discharged. After the clamped clamping piece (102) is submerged below the liquid level line (10) of the adhesive liquid along with the insulating tape (1), it automatically opens and restores the adhesive-containing groove (101), so that the adhesive-containing groove (101) absorbs the adhesive liquid.

3. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 1 or 2, characterized in that, A clamp (5) with a rotatable clamp (501) is provided in front of the impregnation tank (3). The stacked busbar (8) to be encapsulated is clamped on the rotatable clamp (501). The upper side of the stacked busbar (8) being clamped is higher than the impregnation tank (3). The stacked busbar (8) is rotated by the rotatable clamp (501) and the insulating tape (1) is dragged forward to realize the step A3 of wrapping the insulating tape (1) around the encapsulation groove (800) once.

4. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 3, characterized in that, To achieve step A3, the method of wrapping the insulating tape (1) around the encapsulation groove (800) once also includes the following measures: Set up a release tape (2) for continuous operation. Before step A1 begins, stick multiple insulating tapes (1) onto the release tape (2) at a set interval, and leave a gap (201) in front of the first insulating tape (1). The release tape (2) is not elastic. On the left and right sides of the front end of the insulating tape (1), a front left hanging ear (103) and a front right hanging ear (104) protruding outwards are respectively provided. On the left and right sides of the rear end of the insulating tape (1), a rear left hanging ear (105) and a rear right hanging ear (106) protruding outwards are respectively provided. On the edges of the top insulating plate (802) and the bottom insulating plate (801) on both sides of the sealing groove (800), a left hanging groove (8021) and a right hanging groove (8011) are symmetrically provided. The left hanging groove (8021) can accommodate the front left hanging ear (103) and the rear left hanging ear (105), and the right hanging groove (8011) can accommodate the front right hanging ear (104) and the rear right hanging ear (106). The steps described in step A3, which involve wrapping the insulating tape (1) around the encapsulation groove (800), include the following steps: B1. Pass the empty section (201) of the release strip (2) through the elastic clamp (4) and the positioning roller (301) and drag it forward and upward around the lower side of the positioning roller (301) to the upper side of the clamped stacked mother bar (8) and hold it. B2. Pour the adhesive liquid in the impregnation tank (3) to the set liquid level line (10) height; B3. Drag the empty section (201) of the release strip (2) so that the insulating tape (1) pasted behind it can be dragged forward and upward around the lower side of the positioning roller (301) to perform step A1; B4. Continue to drag the empty section (201) of the release tape (2) until the front end of the insulating tape (1) is located at the left hanging groove (8021) and the right hanging groove (8011) of the laminated busbar (8). Insert the front left hanging ear (103) and the front right hanging ear (104) into the rear of the left hanging groove (8021) and the rear of the right hanging groove (8011) respectively to complete step A2. B5. Rotate the stacked busbar (8) one revolution; After rotating the stacked busbar (8) one revolution and pressing the insulating tape (1) completely into the encapsulation groove (800), the rear end of the insulating tape (1) is located at the left hanging groove (8021) and the right hanging groove (8011) of the stacked busbar (8). The rear left hanging ear (105) and the rear right hanging ear (106) are respectively inserted into the rear of the left hanging groove (8021) and the front of the right hanging groove (8011) to complete step A3.

5. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 3, characterized in that, To achieve the sliding pressing of the insulating tape (1) that has entered the encapsulation groove (800) as described in step 3, the insulating tape (1) is rotated downward relative to the front side of the stacked busbar (8) and the upward sliding pressing is made, which forces the adhesive on the bottom surface of the insulating tape (1) to overflow from the adhesive filling gaps (9) on both sides, so that the adhesive filling gaps (9) are filled with adhesive.

6. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 5, characterized in that, The upward sliding press relative to the downward rotating insulating tape (1) on the front side of the stacked busbar (8) is achieved by setting a cantilever (6) above the front part of the rotatable clamp (501) and setting a pressure finger (601) at the lower end of the cantilever (6) to apply pressure to the downward rotating insulating tape (1) on the front side of the stacked busbar (8).

7. The method for insulating and encapsulating the periphery of a laminated busbar according to claim 3, characterized in that, A limiting groove (107) is provided on the bottom surface of the insulating tape (1) along the length direction. The edge of the interphase insulating plate (803) in the stacked busbar (8) protrudes outward relative to the outer side of the conductive plate (804). When the insulating tape (1) is wrapped in the encapsulation groove (800), the protruding part of the interphase insulating plate (803) is inserted into the limiting groove (107) to implement lateral limiting of the insulating tape (1), ensuring that there are equal glue filling gaps (9) between the two sides of the insulating tape (1) and the two side walls of the encapsulation groove (800).

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