Stretching device for battery detection

Abstract

The utility model relates to a stretching device for battery detection in the technical field of battery detection, which comprises a movable mold frame, a fixed mold frame and a mounting table, a battery mounting groove for placing a battery is formed in the mounting table, and a stretching assembly comprises a reset spring and a movable rod; according to the stretching device, the movable mold frame can be opened and closed in a manual stretching manner, so that a battery is mounted in the battery mounting groove for subsequent detection, the battery is limited and fixed through a simplified structure, the convenience of a sampling detection procedure is improved, and meanwhile, the stretching device is convenient to carry about; the method is suitable for a production environment requiring sampling detection or small-batch detection; besides, the guide assembly can ensure stable movement between the movable mold frame and the fixed mold frame, so that the opening and closing operation is smoother and quicker, the effect of simplifying the operation is achieved, and the flexibility of product detection is improved while the use cost is reduced through the structure.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a stretching device for battery testing. Background Technology

[0002] Battery testing refers to the process of testing and evaluating various performance parameters of a battery to ensure its safety and reliability in actual use. This includes electrical performance testing, capacity testing, charge-discharge cycle testing, internal resistance testing, safety performance testing, and environmental adaptability testing. A stretching device is a type of tension clamping fixture used to assist in battery testing, helping with battery installation and positioning.

[0003] The existing Chinese patent with publication number CN210434881U discloses a cylindrical lithium battery casing tensile weight testing device, including a housing with an open top. A top plate is fixedly connected to the top of the housing, and a material distribution rack is fixedly connected to the top of the top plate. A material distribution motor is located on one side of the material distribution rack, and a material distribution robot is located on the back of the material distribution rack. A weighing frame is located on the top of the top plate and on the back of the material distribution rack. This utility model relates to the field of lithium battery testing technology. This cylindrical lithium battery casing tensile weight testing device, with a top plate fixedly connected to the top of the housing, a material distribution rack fixedly connected to the top of the top plate, a material distribution motor on one side of the material distribution rack, and a material distribution robot on the back of the material distribution rack, works in conjunction with a programmable control system to process and judge the data, achieving automatic measurement and grading of the lithium battery casing weight, reducing labor costs, increasing product yield, and reducing the impact of human factors on weight quality.

[0004] While this patented device has a clamping effect, its clamping structure is relatively complex and occupies a large area. When sampling or small-batch testing is required, the complexity of its operation and structure may increase the testing time. On the other hand, when used in a small workshop processing and installation environment, the high cost of the structure and testing requires further processing and simplification, which increases the number of procedures and reduces work efficiency. To address these issues, the inventors have proposed a stretching device for battery testing. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0006] A stretching device for battery testing includes a movable mold frame, a fixed mold frame, and a mounting platform. The mounting platform is mounted on the surface of the fixed mold frame and located between the movable mold frame and the fixed mold frame. The mounting platform has a battery mounting slot for placing a battery inside. A stretching assembly is connected between the movable mold frame and the fixed mold frame. The stretching assembly includes a return spring and a movable rod. One end of the return spring is fixedly connected to the surface of the mounting platform, and the other end of the return spring is mounted with a connecting plate. A movable platform is mounted on the surface of the movable mold frame. One end of the movable rod extends into the interior of the movable platform, and the other end of the movable rod extends into the interior of the mounting platform. The interior of the mounting platform has a slot for the movable rod to move and is a separate structure. A guide assembly for assisting opening and closing is provided between the movable mold frame and the fixed mold frame.

[0007] This structure allows the movable mold frame to be opened and closed manually by stretching, so that batteries can be installed in the battery mounting slot for subsequent testing. The simplified structure limits and fixes the batteries, making the sampling and testing process more convenient, and also making it easy to carry the stretching device.

[0008] Furthermore, the guide assembly ensures smooth movement between the movable and fixed mold frames, making opening and closing operations smoother and faster. The design of the movable rod and return spring allows operators to see and operate intuitively, facilitating quick battery installation and removal. During stretching, one end of the movable rod slides upward along the groove inside the mounting platform. Since the return spring is fixedly connected, when the applied tension is less than the elasticity of the return spring, the return spring resets the movable and fixed mold frames, causing the movable rod to slide downward along the groove inside the mounting platform, thus completing the reset process. When mechanical testing is required, the stretching device can be installed at the designated equipment connection point.

[0009] Furthermore, the guiding assembly includes a guide sleeve and a movable guide rod. The guide sleeve is mounted on the surface of the movable mold frame, one end of the movable guide rod is located inside the guide sleeve, and the other end of the movable guide rod extends into the interior of the fixed mold frame. The end of the movable guide rod located inside the guide sleeve is connected to a limiting plate, and a sliding groove is provided inside the guide sleeve. The design of the guide sleeve and the movable guide rod can ensure that the movable mold frame moves along a predetermined path during the opening and closing process, improve the guiding accuracy, reduce friction and wear, and make the operation smoother. The limiting plate limits the travel of the movable guide rod, preventing the opening and closing range from exceeding the travel limit.

[0010] Furthermore, one end of the movable platform is connected to a handle, one end of which passes through one end of the movable mold frame and extends beyond the surface of the movable mold frame. When manual clamping is required, pulling the handle moves the movable platform together, and then moves the movable platform away from the mounting platform to facilitate the placement of the battery into the battery mounting slot. When automated clamping is required, the movable mold frame and the fixed mold frame are placed in the designated installation position, and the handle is connected to the clamping head. The handle is pulled by pneumatic clamping, which facilitates the spindle to move the handle and the movable platform together.

[0011] Furthermore, the movable rod abuts against the connecting plate via a connector. The movable rod is located inside the return spring and is installed at both ends of the connecting plate. The abutment between the movable rod and the connecting plate via the connector ensures a stable connection between the movable rod and the connecting plate, reducing malfunctions caused by loosening or detachment. The movable rod's location inside the return spring enhances the rigidity of the entire structure, reduces deformation during stretching and reset, and facilitates the movement of the movable rod, preventing the return spring from hindering its movement.

[0012] Furthermore, the bottom of the mounting platform is connected to several movable guide rails for adjusting the front and rear positions, and the movable guide rails run through the bottom of the fixed mold frame. The design of the movable guide rails allows the mounting platform to be precisely adjusted in the front and rear direction to accommodate batteries of different sizes and shapes. During operation, the operator can quickly adjust the position of the mounting platform to ensure accurate alignment of the battery during testing. In addition, the design of the movable guide rails increases the connection points of the mounting platform, reduces vibration during testing, and improves the stability of the test.

[0013] Furthermore, the connecting plate has a mating groove in the middle to avoid the protruding part of the battery. The mating groove extends through the surfaces of both ends of the connecting plate. The design of the mating groove allows the connecting plate to adapt to batteries of different shapes and sizes. When there is a battery with a protruding positive electrode, the protruding part can be placed inside the mating groove to avoid the protruding part from acting as an obstacle. At the same time, it increases the probability of the battery sliding, thus avoiding the protruding part of the battery. This ensures that the connecting plate is not obstructed when in contact with the battery, increases the force-bearing area, and improves the versatility and applicability of the device.

[0014] Furthermore, the surface of the movable mold frame is provided with connecting holes for assisting in the fixing of the guide sleeve. The connecting holes are used to connect external screws. The connection between the connecting holes and the external screws can ensure a stable connection between the guide sleeve and the movable mold frame, reduce failures caused by loosening or detachment, enhance the rigidity of the entire structure, and reduce deformation or positional movement during stretching and resetting.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the movable mold frame can be opened and closed by manual stretching, so that the battery can be installed in the battery mounting slot for subsequent testing. The battery is limited and fixed by a simplified structure, which increases the convenience of the sampling and testing process. At the same time, the stretching device is easy to carry and is suitable for production environments that require sampling or small-batch testing.

[0016] In addition, the guide assembly ensures smooth movement between the movable and fixed mold frames, making the opening and closing operation smoother and faster. The design of the movable rod and return spring allows the operator to see and operate intuitively, facilitating the quick installation and removal of batteries and providing convenience.

[0017] During stretching, one end of the movable rod slides upward along the groove inside the mounting platform. Since the return spring is fixedly connected, when the applied tension is less than the elasticity of the return spring, the return spring resets the movable mold frame to the fixed mold frame, causing the movable rod to slide downward along the groove inside the mounting platform, thus completing the reset process. When mechanical testing is required, the stretching device can be installed at the designated equipment connection point, achieving a simplified operation effect. This structure reduces usage costs while improving the flexibility of product testing. Attached Figure Description

[0018] Figure 1 This is a front view of a stretching device used for battery testing.

[0019] Figure 2 This is a left view of a stretching device used for battery testing.

[0020] Figure 3 This is a perspective view of a stretching device used for battery testing.

[0021] Figure 4 Another perspective view of a stretching device used for battery testing;

[0022] Figure 5 This is another perspective view of a stretching device used for battery testing;

[0023] Figure 6 This is an internal structural diagram of a stretching device used for battery testing.

[0024] Figure 7 This is another internal structural diagram of a stretching device used for battery testing;

[0025] Figure 8 This is another internal structure diagram of a stretching device used for battery testing;

[0026] Figure 9This is an exploded view of a stretching device used for battery testing.

[0027] Figure 10 This is a cross-sectional view of a guide component in a stretching device for battery testing;

[0028] In the diagram: Movable mold frame-1, Fixed mold frame-2, Mounting platform-3, Battery mounting slot-4, Return spring-5, Movable rod-6, Connecting plate-7, Movable platform-8, Guide sleeve-9, Movable guide rod-10, Limiting plate-11, Slide groove-12, Connector-13, Movable guide rail-14, Mating groove-15, Connecting hole-16, Handle-17. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] For this embodiment, please refer to Figures 1-10 The present invention relates to a battery testing stretching device, comprising a movable mold frame 1, a fixed mold frame 2, and a mounting platform 3. The mounting platform 3 is mounted on the surface of the fixed mold frame 2 and is located between the movable mold frame 1 and the fixed mold frame 2. The mounting platform 3 has a battery mounting slot 4 for placing a battery inside. A stretching assembly is connected between the movable mold frame 1 and the fixed mold frame 2. The stretching assembly includes a return spring 5 and a movable rod 6. One end of the return spring 5 is fixedly connected to the surface of the mounting platform 3, and the other end of the return spring 5 is mounted with a connecting plate 7. A movable platform 8 is mounted on the surface of the movable mold frame 1. One end of the movable rod 6 extends into the interior of the movable platform 8, and the other end of the movable rod 6 extends into the interior of the mounting platform 3. The interior of the mounting platform 3 has a slot for the movable rod 6 to move and is a separate structure. A guide assembly for assisting opening and closing is provided between the movable mold frame 1 and the fixed mold frame 2.

[0031] This structure allows the movable mold frame 1 to be opened and closed manually by stretching, so that the battery mounting slot 4 can be used to install the battery for subsequent testing. The simplified structure limits and fixes the battery, thereby increasing the convenience of the sampling and testing process, and also makes it easy to carry the stretching device with you.

[0032] Furthermore, the guide assembly ensures smooth movement between the movable mold frame 1 and the fixed mold frame 2, making the opening and closing operation smoother and faster. The design of the movable rod 6 and the return spring 5 allows the operator to see and operate intuitively, facilitating quick battery installation and removal. When stretched, one end of the movable rod 6 slides upward along the groove inside the mounting platform 3. Since the return spring 5 is fixedly connected, when the applied tension is less than the elasticity of the return spring 5, the return spring 5 resets the movable mold frame 1 and the fixed mold frame 2, causing the movable rod 6 to slide downward along the groove inside the mounting platform 3, thus completing the reset process. When mechanical testing is required, the stretching device can be installed at the designated equipment connection point.

[0033] The guiding assembly includes a guide sleeve 9 and a movable guide rod 10. The guide sleeve 9 is installed on the surface of the movable mold frame 1. One end of the movable guide rod 10 is located inside the guide sleeve 9, and the other end of the movable guide rod 10 extends into the interior of the fixed mold frame 2. The end of the movable guide rod 10 located inside the guide sleeve 9 is connected to a limiting plate 11. A sliding groove 12 is provided inside the guide sleeve 9. The design of the guide sleeve 9 and the movable guide rod 10 can ensure that the movable mold frame 1 moves along a predetermined path during the opening and closing process, improve the guiding accuracy, reduce friction and wear, and make the operation smoother. The limiting plate 11 limits the active stroke of the movable guide rod 10 to prevent the opening and closing range from exceeding the stroke.

[0034] One end of the movable platform 8 is connected to a handle 17, one end of which passes through one end of the movable mold frame 1 and extends beyond the surface of the movable mold frame 1. When manual clamping is required, the handle 17 is pulled to move the movable platform 8 together, and then the movable platform 8 moves away from the mounting platform 3 to facilitate the placement of the battery into the battery mounting slot 4. When automatic clamping is required, the movable mold frame 1 and the fixed mold frame 2 are placed in the designated installation position, and the handle 17 is connected to the clamping head. The handle 17 is pulled by gas clamping, which facilitates the spindle to move the handle 17 and the movable platform 8 together.

[0035] The movable rod 6 abuts against the connecting plate 7 via the connector 13. The movable rod 6 is located inside the return spring 5 and is installed at both ends of the connecting plate 7. The abutment between the movable rod 6 and the connecting plate 7 via the connector 13 ensures a stable connection between the movable rod 6 and the connecting plate 7, reducing malfunctions caused by loosening or detachment. The movable rod 6 being located inside the return spring 5 enhances the rigidity of the entire structure, reduces deformation during stretching and reset, and facilitates the movement of the movable rod 6, preventing the return spring 5 from hindering the movement of the movable rod 6.

[0036] The bottom of the mounting platform 3 is connected to several movable guide rails 14 for adjusting the front and rear position. The movable guide rails 14 pass through the bottom of the fixed mold frame 2. The design of the movable guide rails 14 allows the mounting platform 3 to be precisely adjusted in the front and rear direction to adapt to batteries of different sizes and shapes. During operation, the operator can quickly adjust the position of the mounting platform 3 to ensure the precise alignment of the battery during the test. In addition, the design of the movable guide rails 14 increases the connection support points of the mounting platform 3, reduces vibration during the test, and improves the stability of the test.

[0037] The connecting plate 7 has a mating groove 15 in the middle to avoid the protruding part of the battery. The mating groove 15 extends through the surfaces of both ends of the connecting plate 7. The design of the mating groove 15 allows the connecting plate 7 to adapt to batteries of different shapes and sizes. When there is a battery with a protruding positive electrode, the protruding part can be placed inside the mating groove 15 to avoid the protruding part from acting as an obstacle. At the same time, it increases the probability of the battery sliding, thus avoiding the protruding part of the battery. This ensures that the connecting plate 7 is not obstructed when in contact with the battery, increases the force-bearing area, and improves the versatility and applicability of the equipment.

[0038] The surface of the movable mold frame 1 is provided with a connecting hole 16 for fixing the guide sleeve 9. The connecting hole 16 is used to connect external screws. The connection between the connecting hole 16 and the external screws can ensure a stable connection between the guide sleeve 9 and the movable mold frame 1, reduce failures caused by loosening or detachment, enhance the rigidity of the entire structure, and reduce deformation or positional movement during stretching and resetting.

[0039] The key design features of this utility model are: the movable mold frame 1 can be opened and closed by manual stretching, so that the battery mounting slot 4 can be used to install the battery for subsequent testing. The battery is limited and fixed by a simplified structure, which increases the convenience of the sampling and testing process, and at the same time makes it easy to carry the stretching device with you.

[0040] In addition, the guide assembly ensures smooth movement between the movable mold frame 1 and the fixed mold frame 2, making the opening and closing operation smoother and faster. The design of the movable rod 6 and the return spring 5 allows the operator to see and operate them intuitively, facilitating the quick installation and removal of the battery.

[0041] When tensioning is performed, one end of the movable rod 6 slides upward along the groove inside the mounting platform 3. Since the return spring 5 is fixedly connected, when the applied tension is less than the elasticity of the return spring 5, the return spring 5 resets the movable mold frame 1 and the fixed mold frame 2, thereby causing the movable rod 6 to slide downward along the groove inside the mounting platform 3, thus completing the reset process. When mechanical testing is required, the tensioning device can be installed at the designated equipment connection point.

[0042] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A stretching device for battery testing, comprising a movable mold frame, a fixed mold frame, and a mounting platform, characterized in that: The mounting platform is installed on the surface of the fixed mold frame and located between the movable mold frame and the fixed mold frame. The interior of the mounting platform has a battery mounting slot for placing batteries. A tension assembly is connected between the movable mold frame and the fixed mold frame. The tension assembly includes a return spring and a movable rod. One end of the return spring is fixedly connected to the surface of the mounting platform, and the other end of the return spring is equipped with a connecting plate. A movable platform is installed on the surface of the movable mold frame. One end of the movable rod extends into the interior of the movable platform, and the other end of the movable rod extends into the interior of the mounting platform. The movable platform has a separate structure. A guide assembly for assisting opening and closing is provided between the movable mold frame and the fixed mold frame.

2. The stretching device for battery testing according to claim 1, characterized in that: The guiding assembly includes a guide sleeve and a movable guide rod. The guide sleeve is installed on the surface of the movable mold frame. One end of the movable guide rod is located inside the guide sleeve, and the other end of the movable guide rod extends into the interior of the fixed mold frame. The end of the movable guide rod located inside the guide sleeve is connected to a limit plate, and a sliding groove is provided inside the guide sleeve.

3. The stretching device for battery testing according to claim 1, characterized in that: One end of the movable platform is connected to a handle, one end of which passes through one end of the movable mold frame and extends beyond the surface of the movable mold frame.

4. A tensile device for battery testing according to any one of claims 1-3, characterized in that: The movable rod abuts against the connecting plate via a connector. The movable rod is located inside the return spring and is installed at both ends of the connecting plate.

5. A tensile device for battery testing according to any one of claims 1-3, characterized in that: The bottom of the mounting platform is connected to several movable guide rails for adjusting the front and rear positions, and the movable guide rails pass through the bottom of the fixed mold frame.

6. A tensile device for battery testing according to any one of claims 1-3, characterized in that: The connecting plate has a mating groove in the middle to avoid the protruding part of the battery, and the mating groove extends through the surfaces of both ends of the connecting plate.

7. The stretching device for battery testing according to claim 2, characterized in that: The surface of the movable mold frame is provided with connecting holes for fixing the auxiliary guide sleeve, and the connecting holes are used to connect external screws.

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