Improved copper-nickel composite sheet and preparation method thereof

Abstract

The invention discloses an improved copper-nickel clad sheet and a preparation method thereof, and relates to the technical field of copper-nickel clad sheets. The improved copper-nickel composite sheet comprises a copper-nickel composite sheet body, a fixed clamping plate is fixedly connected to the front end of the copper-nickel composite sheet body, a clamping groove is formed in the rear end of the copper-nickel composite sheet body, the fixed clamping plate is matched with the clamping groove, two clamping blocks are arranged at the front end of the fixed clamping plate, and two fixed plates are fixedly connected into the clamping groove. Connectors are fixedly connected to the upper ends of the two fixing plates, connecting grooves are formed in the two connectors, two first springs are connected to the interiors of the two connectors, clamping columns are connected to the other side ends of the four first springs, and the two connecting grooves are matched with the two containing grooves correspondingly; the telescopic end of the telescopic push rod pushes the clamping column through the moving groove under the counter-acting force of the reset spring, and at the moment, buckling between the two copper-nickel composite sheet bodies can be relieved.

Description

Technical Field

[0001] This invention relates to the field of copper-nickel composite sheet technology, specifically to an improved copper-nickel composite sheet and its preparation method. Background Technology

[0002] In electric vehicles, the most crucial component is the power battery pack, which serves as the power source. Currently, lithium-ion batteries have become the preferred power source due to their advantages such as high energy density, safety, and small size. A power battery pack is formed by connecting individual cells in series or parallel to meet the various power demands of a vehicle. The electrode terminals of each individual cell are connected accordingly to form a series or parallel connection, thus creating the power battery pack. Clearly, since the power output of a power battery is extremely dependent on the connection structure of its electrode terminals, the connection structure between the electrode terminals of each individual cell has a significant impact on the performance of the power battery. The reliability and internal resistance of this connection structure are closely related to the stability and power output performance of the power battery.

[0003] When existing copper-nickel composite sheets are damaged during use due to various reasons, the entire copper-nickel composite sheet needs to be disassembled for repair. This makes the repair or maintenance of the copper-nickel composite sheet time-consuming and labor-intensive, and it is impossible to repair or maintain only one part. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an improved copper-nickel composite sheet and its preparation method. This solves the problem that when existing copper-nickel composite sheets are damaged due to various reasons during use, the entire copper-nickel composite sheet needs to be disassembled for repair, which is time-consuming and labor-intensive, and makes it impossible to repair or inspect only one part of the copper-nickel composite sheet.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an improved copper-nickel composite sheet, comprising a copper-nickel composite sheet body, a fixed plate fixedly connected to the front end of the copper-nickel composite sheet body, a slot provided at the rear end of the copper-nickel composite sheet body, the fixed plate and the slot cooperating with each other, two locking blocks provided at the front end of the fixed plate, two fixed plates fixedly connected inside the slot, connectors fixedly connected to the upper ends of the two fixed plates, connecting grooves provided inside the two connectors, two first springs connected inside the two connectors, locking pins connected to the other side ends of the four first springs, the four locking pins slidingly connected to the interior of the two connectors respectively, the two connecting grooves cooperating with the two placement grooves respectively, the copper-nickel composite sheet body (1) is composed of copper, electroplating solution and nickel, the proportion of copper is between 65% and 55% of the copper-nickel composite sheet body, the proportion of nickel is between 35% and 45% of the copper-nickel composite sheet body, and the proportion of electroplating solution is between 1% and 5% of the copper-nickel composite sheet body.

[0008] Preferably, each of the two connectors has two sliding grooves inside, and each of the four sliding grooves has a first slider slidably connected inside. The four first sliders are respectively fixedly connected to the circumferential surfaces of the four locking posts.

[0009] Preferably, the front end of the fixed plate has two placement slots, each of which is equipped with a driver. Each of the two drivers has two moving slots, and each of the two moving slots is rotatably connected to a rotating rod. The two rotating rods are respectively fixedly connected to the output ends of the two drivers. Each of the two rotating rods has a telescopic push rod fixedly connected to its circumferential surface. Each of the two telescopic push rods has a return spring inside, and the two return springs are respectively connected to the telescopic end and the bottom end of the two telescopic push rods.

[0010] Preferably, a PLC control board is snapped to the left end of the copper-nickel composite sheet body, and the PLC control board is connected to the two drivers respectively.

[0011] Preferably, each of the two telescopic push rods has a telescopic rod connected inside, and the other end of each of the two telescopic rods is connected to the telescopic end of the two telescopic push rods respectively.

[0012] Preferably, an improved method for preparing a copper-nickel composite sheet includes a copper-nickel composite sheet body.

[0013] S1. Prepare copper and nickel raw materials into block materials through smelting and casting processes, and roll the copper and nickel blocks separately to press them into the required thickness;

[0014] S2. The pressed copper and nickel sheets are stacked together, and the stacked copper and nickel sheets are heated to allow solid-phase diffusion within a certain temperature range.

[0015] S3. Then, the copper-nickel composite sheet is annealed.

[0016] S4. After annealing, the copper-nickel composite sheet body is subjected to solid-liquid treatment to completely dissolve the solid and liquid components, and then rapidly cooled. Solid-liquid treatment refers to the heat treatment process of heating the alloy to a high-temperature single-phase region and holding it at a constant temperature to allow the excess phase to fully dissolve into the solid solution and then rapidly cooling it to obtain a supersaturated solid solution.

[0017] S5. After the copper-nickel composite sheet body has cooled down, install the fixing plate on the copper-nickel composite sheet body and open the slot. Set the buckle mechanism inside the slot and cooperate with the block on the fixing plate so that the copper-nickel composite sheet body can be assembled.

[0018] Preferably, during the preparation of the copper-nickel composite sheet, an acidic substance is added to adjust the pH value of the mixture and the acidic substance to be between 2 and 3 when the copper and nickel are mixed.

[0019] Preferably, after the copper-nickel composite sheet body is prepared, it is immersed in a water bath at a constant temperature of 85°C for 24 hours or 48 hours.

[0020] Preferably, after the copper-nickel composite sheet body is prepared, it needs to be bent at least 180°, and this bending is performed 5 to 10 times.

[0021] Preferably, the thickness of the nickel plating layer is 0.5 to 1.5 μm.

[0022] Beneficial effects

[0023] This invention provides an improved copper-nickel composite sheet and its preparation method. It has the following beneficial effects:

[0024] 1. The improved copper-nickel composite sheet and its preparation method, when it is necessary to connect two copper-nickel composite sheet bodies, a fixing plate enters the inside of the slot, and two locking blocks are fixedly connected to the fixing plate and simultaneously enter the inside of the connection slot opened on the connector. At this time, the two locking pins will shrink by compression. When the locking blocks pass through the connection slot, the locking pins can form a snap-fit ​​effect with the locking blocks through the reaction force of the first spring, so that the two copper-nickel composite sheet bodies can be tightly connected.

[0025] 2. The improved copper-nickel composite sheet and its preparation method, when it is necessary to release the latch between two copper-nickel composite sheet bodies, is activated by a driver. Since the output end of the driver is fixedly connected to the telescopic push rod, the telescopic push rod drives the rotating rod to rotate inside the moving groove, causing the telescopic end of the telescopic push rod to retract inside the telescopic push rod. When passing through the moving groove, the reaction force of the reset spring causes the telescopic end of the telescopic push rod to push the locking post through the moving groove, thus releasing the latch between the two copper-nickel composite sheet bodies. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a first perspective view of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged view at point A;

[0029] Figure 4 This is a second perspective view of the present invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged view at point B.

[0031] In the diagram: 1. Copper-nickel composite sheet body; 2. Fixing plate; 3. Slot; 4. PLC control board; 5. Placement slot; 6. Driver; 7. Block; 8. Moving slot; 9. Fixing plate; 10. Connector; 11. Connecting slot; 12. Locking post; 13. First spring; 14. Sliding slot; 15. First slider; 16. Rotating rod; 17. Telescopic push rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-5This invention provides a technical solution: an improved copper-nickel composite sheet, comprising a copper-nickel composite sheet body 1, a fixing plate 2 fixedly connected to the front end of the copper-nickel composite sheet body 1, and a slot 3 formed at the rear end of the copper-nickel composite sheet body 1. The fixing plate 2 and the slot 3 cooperate with each other. Two locking blocks 7 are provided at the front end of the fixing plate 2. Two fixing plates 9 are fixedly connected inside the slot 3. Connectors 10 are fixedly connected to the upper ends of the two fixing plates 9. Connecting grooves 11 are formed inside the two connectors 10. There are two first springs 13, and each of the four first springs 13 has a locking post 12 connected to its other end. The four locking posts 12 are slidably connected to the interior of the two connectors 10 respectively. The two connecting grooves 11 are respectively matched with the two placement grooves 5. The copper-nickel composite sheet body 1 is composed of copper, electroplating solution and nickel. The proportion of copper is between 65% and 55% of the copper-nickel composite sheet body 1, the proportion of nickel is between 35% and 45% of the copper-nickel composite sheet body 1, and the proportion of electroplating solution is between 1% and 5% of the copper-nickel composite sheet body 1.

[0034] During operation, when connecting two copper-nickel composite sheet bodies 1, the fixing plate 2 enters the slot 3. Two locking blocks 7, fixedly connected to the fixing plate 2, simultaneously enter the connecting slot 11 on the connector 10. At this time, the two locking posts 12 retract through compression. When the locking blocks 7 pass through the connecting slot 11, the locking posts 12, through the reaction force of the first spring 13, form a locking effect with the locking blocks 7, thus tightly connecting the two copper-nickel composite sheet bodies 1. When it is necessary to release the locking between the two copper-nickel composite sheet bodies 1, the driver 6 is activated. The output end of device 6 is fixedly connected to telescopic push rod 17, so that telescopic push rod 17 drives rotating rod 16 to rotate inside moving groove 8, so that the telescopic end of telescopic push rod 17 retracts inside telescopic push rod 17. When passing through moving groove 8, the reaction force of reset spring causes the telescopic end of telescopic push rod 17 to push the locking post 12 through moving groove 8. At this time, the latch between the two copper-nickel composite sheet bodies 1 can be released. The first slider 15 is fixedly connected to locking post 12. When locking post 12 moves, the first slider 15 can move inside sliding groove 14, which can limit the movement of locking post 12.

[0035] Please see Figure 1-5 The present invention provides a technical solution: two sliding grooves 14 are opened inside each of the two connectors 10, and first sliders 15 are slidably connected inside each of the four sliding grooves 14. The four first sliders 15 are respectively fixedly connected to the circumferential surface of the four locking posts 12.

[0036] During operation, the first slider 15 is fixedly connected to the locking post 12. When the locking post 12 moves, the first slider 15 can move inside the sliding groove 14, thus limiting the movement of the locking post 12.

[0037] Please see Figure 1-5 The present invention provides a technical solution: the front end of the fixed plate 2 has two placement slots 5, each of the two placement slots 5 is equipped with a driver 6, each of the two drivers 6 has two moving slots 8, each of the two moving slots 8 is rotatably connected with a rotating rod 16, the two rotating rods 16 are respectively fixedly connected to the output ends of the two drivers 6, each of the two rotating rods 16 has a telescopic push rod 17 fixedly connected to the circumferential surface of the two rotating rods 16, each of the two telescopic push rods 17 has a return spring inside, and the two return springs are respectively connected to the telescopic end and the bottom end of the two telescopic push rods 17.

[0038] During operation, when it is necessary to release the latch between the two copper-nickel composite sheet bodies 1, the driver 6 is activated. Since the output end of the driver 6 is fixedly connected to the telescopic push rod 17, the telescopic push rod 17 drives the rotating rod 16 to rotate inside the moving groove 8, causing the telescopic end of the telescopic push rod 17 to retract inside the telescopic push rod 17. When passing through the moving groove 8, the reaction force of the reset spring causes the telescopic end of the telescopic push rod 17 to push the locking post 12 through the moving groove 8, thus releasing the latch between the two copper-nickel composite sheet bodies 1.

[0039] Please see Figure 1-5 The present invention provides a technical solution: a PLC control board 4 is snapped to the left end of the copper-nickel composite sheet body 1, and the PLC control board 4 is connected to two drivers 6 respectively.

[0040] During operation, the two drivers 6 can be started through the PLC control board 4. When it is necessary to release the latch between the two copper-nickel composite sheet bodies 1, starting the driver 6 will cause the telescopic push rod 17 to push the locking post 12, thereby releasing the latch effect between the two copper-nickel composite sheet bodies 1.

[0041] Please see Figure 1-5 The present invention provides a technical solution: both telescopic push rods 17 are internally connected to telescopic rods, and the other ends of the two telescopic rods are respectively connected to the telescopic ends of the two telescopic push rods 17.

[0042] During operation, the telescopic rod limits the movement of the telescopic push rod 17 as the telescopic end moves, preventing it from dislodging from the inside of the moving groove 8 and thus preventing it from pushing the locking post 12.

[0043] Please see Figure 1-5This invention provides a technical solution: an improved method for preparing copper-nickel composite sheets, comprising a copper-nickel composite sheet body 1.

[0044] S1. Prepare copper and nickel raw materials into block materials through smelting and casting processes, and roll the copper and nickel blocks separately to press them into the required thickness;

[0045] S2. The pressed copper and nickel sheets are stacked together, and the stacked copper and nickel sheets are heated to allow solid-phase diffusion within a certain temperature range.

[0046] S3. Then, the copper-nickel composite sheet is annealed.

[0047] S4. After annealing, the copper-nickel composite sheet body 1 is subjected to solid-liquid treatment to completely dissolve the solid and liquid components, and then rapidly cooled. Solid-liquid treatment refers to the heat treatment process of heating the alloy to a high-temperature single-phase region and holding it at a constant temperature to allow the excess phase to fully dissolve into the solid solution and then rapidly cooling it to obtain a supersaturated solid solution.

[0048] S5. After the copper-nickel composite sheet body 1 has cooled down, the fixing plate 3 is installed on the copper-nickel composite sheet body 1 and the slot 2 is opened. The slot 2 is equipped with a buckling mechanism and cooperates with the buckle block 7 on the fixing plate 3 so that the copper-nickel composite sheet body 1 can be assembled.

[0049] During operation, the copper and nickel composite sheet body 1 is composed of 60% copper and 40% nickel. The two metal materials are stacked together and heated in a preheated furnace to achieve a certain degree of plasticity. Then, pressure is applied by rolling to press the two metals together, which can make the copper-nickel composite sheet body 1 more tightly bonded.

[0050] Please see Figure 1-5 The present invention provides a technical solution: during the preparation of the copper-nickel composite sheet body 1, when copper and nickel become a mixed liquid, an acidic substance is added for adjustment so that the pH value of the mixed liquid and the acidic substance is between 2 and 3.

[0051] During operation, acidic substances are used for corrosion and cleaning, which can further remove impurities from the surface of the copper-nickel composite sheet 1.

[0052] Please see Figure 1-5 The present invention provides a technical solution: after the copper-nickel composite sheet body 1 is prepared, the copper-nickel composite sheet body 1 is immersed in a water bath at a constant temperature of 85°C for 24 hours or 48 hours.

[0053] During operation, the copper-nickel composite sheet body 1 is immersed in a water bath at a constant temperature of 85°C for 24 or 48 hours to improve its corrosion resistance after preparation.

[0054] Please see Figure 1-5 The present invention provides a technical solution: after the copper-nickel composite sheet body 1 is prepared, it needs to be bent at least 180°, and this bending is performed 5 to 10 times.

[0055] During operation, bending the copper-nickel composite sheet body 1 by at least 180° 5 to 10 times can improve the flexibility of the copper-nickel composite sheet body 1 after preparation.

[0056] Please see Figure 1-5 The present invention provides a technical solution: the thickness of the nickel plating layer is 0.5 to 1.5 μm.

[0057] During operation, the nickel plating layer makes the copper-nickel composite sheet body 1 more stable during use.

[0058] In summary, this improved copper-nickel composite sheet and its preparation method, when connecting two copper-nickel composite sheet bodies 1, involves a fixing plate 2 entering the slot 3, with two locking blocks 7 fixedly connected to the fixing plate 2 simultaneously entering the connection slot 11 on the connector 10. At this time, the two locking posts 12 retract through compression. When the locking blocks 7 pass through the connection slot 11, the locking posts 12, through the reaction force of the first spring 13, form a locking effect with the locking blocks 7, thus tightly connecting the two copper-nickel composite sheet bodies 1. When it is necessary to release the locking between the two copper-nickel composite sheet bodies 1, the actuator 6 is used. Upon startup, the output end of the driver 6 is fixedly connected to the telescopic push rod 17, causing the telescopic push rod 17 to drive the rotating rod 16 to rotate inside the moving groove 8. This causes the telescopic end of the telescopic push rod 17 to retract inside the telescopic push rod 17. When passing through the moving groove 8, the reaction force of the reset spring causes the telescopic end of the telescopic push rod 17 to push the locking post 12 through the moving groove 8. At this time, the latch between the two copper-nickel composite sheet bodies 1 can be released. The first slider 15 is fixedly connected to the locking post 12. When the locking post 12 moves, the first slider 15 can move inside the sliding groove 14, thus limiting the movement of the locking post 12.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved copper-nickel composite sheet, comprising a copper-nickel composite sheet body (1), characterized in that: The front end of the copper-nickel composite sheet body (1) is fixedly connected to a fixing plate (2), and the rear end of the copper-nickel composite sheet body (1) is provided with a slot (3). The fixing plate (2) and the slot (3) cooperate with each other. The front end of the fixing plate (2) is provided with two locking blocks (7). The inside of the slot (3) is fixedly connected to two fixing plates (9). The upper ends of the two fixing plates (9) are fixedly connected to connectors (10). The inside of the two connectors (10) is provided with connecting slots (11). The inside of the two connectors (10) is connected to two first springs (13). Each of the four first springs (13) has a locking pin (12) connected to the other end. The four locking pins (12) are slidably connected to the interior of the two connectors (10). The two connecting grooves (11) are respectively matched with the two placement grooves (5). The copper-nickel composite sheet body (1) is composed of copper, electroplating solution and nickel. The proportion of copper is between 65% and 55% of the copper-nickel composite sheet body (1). The proportion of nickel is between 35% and 45% of the copper-nickel composite sheet body (1). The proportion of electroplating solution is between 1% and 5% of the copper-nickel composite sheet body (1).

2. The improved copper-nickel composite sheet according to claim 1, characterized in that: Each of the two connectors (10) has two sliding grooves (14) inside, and each of the four sliding grooves (14) has a first slider (15) slidably connected inside. The four first sliders (15) are respectively fixedly connected to the circumferential surface of the four pins (12).

3. The improved copper-nickel composite sheet according to claim 1, characterized in that: The front end of the fixed plate (2) has two placement slots (5), and each of the two placement slots (5) is equipped with a driver (6). Each of the two drivers (6) has two moving slots (8), and each of the two moving slots (8) is rotatably connected with a rotating rod (16). The two rotating rods (16) are respectively fixedly connected to the output ends of the two drivers (6). Each of the two rotating rods (16) has a telescopic push rod (17) fixedly connected to its circumferential surface. Each of the two telescopic push rods (17) has a return spring inside it, and the two return springs are respectively connected to the telescopic end and the bottom end of the two telescopic push rods (17).

4. An improved copper-nickel composite sheet according to claim 3, characterized in that: The left end of the copper-nickel composite sheet body (1) is snapped with a PLC control board (4), and the PLC control board (4) is connected to two drivers (6) respectively.

5. An improved copper-nickel composite sheet according to claim 3, characterized in that: Both of the telescopic push rods (17) have telescopic rods connected inside, and the other ends of the two telescopic rods are respectively connected to the telescopic ends of the two telescopic push rods (17).

6. An improved method for preparing a copper-nickel composite sheet, comprising a copper-nickel composite sheet body (1), characterized in that: S1. Prepare copper and nickel raw materials into block materials through smelting and casting processes, and roll the copper and nickel blocks separately to press them into the required thickness; S2. The pressed copper and nickel sheets are stacked together, and the stacked copper and nickel sheets are heated to allow solid-phase diffusion within a certain temperature range. S3. Then, the copper-nickel composite sheet is annealed. S4. After annealing, the copper-nickel composite sheet body (1) is subjected to solid-liquid treatment to completely dissolve the solid and liquid in it, and then it is cooled quickly. Solid-liquid treatment refers to the heat treatment process of heating the alloy to a high temperature single-phase region and holding it at a constant temperature so that the excess phase is fully dissolved into the solid solution and then rapidly cooled to obtain a supersaturated solid solution. S5. After the copper-nickel composite sheet body (1) has cooled down, the copper-nickel composite sheet body (1) is fixed with a card plate (3) and a card slot (2) is opened. The card slot (2) is equipped with a buckle mechanism and cooperates with the card block (7) on the fixed card plate (3) so that the copper-nickel composite sheet body (1) can be assembled.

7. The improved method for preparing copper-nickel composite sheets according to claim 1, characterized in that: During the preparation of the copper-nickel composite sheet body (1), when copper and nickel become a mixture, an acidic substance is added to adjust the pH value of the mixture and the acidic substance to be between 2 and 3.

8. The improved method for preparing copper-nickel composite sheets according to claim 1, characterized in that: After the copper-nickel composite sheet body (1) is prepared, it is immersed in a water bath at a constant temperature of 85°C for 24 hours or 48 hours.

9. The improved method for preparing copper-nickel composite sheets according to claim 1, characterized in that: After the copper-nickel composite sheet body (1) is prepared, it needs to be bent at least 180° 5 to 10 times.

10. The improved method for preparing copper-nickel composite sheets according to claim 1, characterized in that: The thickness of the nickel plating layer is 0.5~1.5μm.

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