Battery pack test tool

Abstract

The utility model discloses a battery pack test tool, and relates to the technical field of test equipment. The tool specifically comprises a tool bottom plate; the fixed end of the lifting air cylinder is connected to the tool bottom plate; the plug-in fixing plate is connected to a telescopic shaft of the lifting cylinder; the test plug-in is connected to the plug-in fixing plate; and the control unit is in point connection with the lifting air cylinder and is used for controlling the lifting air cylinder to ascend or descend so as to drive the test plug-in to be in plug-in connection with the plug-in port of the battery pack placed on the bracket. The utility model aims to improve the operation efficiency of the battery pack EOL test process, ensure the ergonomic safety of operators, and ensure the stability and reliability of the test quality.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a battery pack testing fixture. Background Technology

[0002] With the rapid development of the new energy vehicle industry, electric vehicles, especially pure electric commercial vehicles, are being used more and more widely. As the core power source of pure electric commercial vehicles, the battery pack usually needs to undergo rigorous end-of-line (EOL) testing after production and assembly to ensure that the battery pack performance meets the specified standards and to guarantee product quality and the safe and reliable operation of the vehicle.

[0003] Currently, the standard practice for battery pack EOL testing in the industry is as follows: According to the finished product testing specifications, operators must individually connect and disconnect the high-voltage charging port, high-voltage discharging port, low-voltage charging / discharging port, and communication line port of the battery pack to ensure that the battery pack's performance parameters (such as voltage, current, and communication signals) meet design and specification requirements. In actual connection and disconnection, commercial vehicle battery packs typically have an independent high-voltage housing structure, often located at the bottom of the battery pack, resulting in relatively limited installation space. For example, the height between the bottom of the battery pack and the ground is only about 0.56 meters. Operators need to crawl into this confined space to connect multiple high-voltage connectors, such as Charging 1, Charging 2, Discharging 1, and Discharging 2, one by one. The connection and disconnection process itself requires considerable force to ensure the connectors are fully inserted and that the latches are properly locked to prevent voltage or current fluctuations due to poor contact during testing.

[0004] However, under the current conventional manual operation mode, operators working in such a confined installation space are not only time-consuming and labor-intensive, severely impacting work efficiency, but also prone to frequent connection failures, requiring repeated attempts and confirmations. Furthermore, prolonged high-intensity operations in a confined space not only increase worker workload and psychological stress but also pose certain personal safety risks. For example, operators frequently crawling in and out of the narrow space at the bottom of the battery pack are prone to head injuries, crushing injuries, and other accidents, which can seriously affect their occupational health in the long run.

[0005] Therefore, improving the efficiency of battery pack EOL testing, ensuring the ergonomic safety of operators, and guaranteeing the stability and reliability of test quality have become urgent technical challenges. Utility Model Content

[0006] The main purpose of this utility model is to provide a battery pack testing fixture, which aims to improve the work efficiency of the battery pack EOL testing process, ensure the ergonomic safety of operators, and ensure the stability and reliability of test quality.

[0007] To achieve the above objectives, this utility model proposes a battery pack testing fixture, comprising:

[0008] Tooling base plate;

[0009] At least one lifting cylinder, the fixed end of which is connected to the tooling base plate;

[0010] The insert fixing plate is connected to the telescopic shaft of the lifting cylinder;

[0011] The test plug-in is connected to the plug-in mounting plate; and

[0012] The control unit is connected to the lifting cylinder and is used to control the lifting cylinder to rise or fall, so as to drive the test plug to connect with the interface of the battery pack placed on the bracket.

[0013] By precisely controlling the lifting and lowering movement of the test plug with a lifting cylinder, reliable connection between the test plug and the battery pack interface is achieved, avoiding human error in connection, improving testing efficiency and accuracy, reducing manual operation intensity, improving the testing quality of the battery pack, and ensuring the product reliability of the battery pack in the production and delivery stages.

[0014] In one embodiment of this application, at least one telescopic guide post is further included, the first end of which is connected to the tooling base plate and the second end of which is connected to the plug-in fixing plate.

[0015] The test plug is moved up and down by a lifting cylinder. With the guidance of the telescopic guide column, the test plug can be effectively prevented from shifting or tilting during the lifting process. This ensures accurate alignment and reliable connection between the test plug and the battery pack interface, and improves the stability and accuracy of the connection.

[0016] In one embodiment of this application, the number of telescopic guide posts is four, and the four telescopic guide posts are evenly distributed on the tooling base plate.

[0017] By precisely controlling the lifting movement of the test plug with a lifting cylinder, and with the guidance of four evenly distributed telescopic guide columns, the stability and accuracy of the plug fixing plate and the test plug during the up and down movement can be significantly improved.

[0018] In one embodiment of this application, the tooling base plate is further provided with a support frame, which is sleeved on the outer side wall of the lifting cylinder to limit the sway of the lifting cylinder.

[0019] By effectively limiting the lifting cylinder with the support frame, the stability of the plug-in fixing plate and test plug-in during the lifting process can be significantly improved, preventing the lifting cylinder from swaying during operation and ensuring that the test plug-in and battery pack interface are accurately aligned and reliably connected.

[0020] In one embodiment of this application, the support frame is I-shaped.

[0021] Using an I-shaped support frame can reduce the space occupied by the support frame and lower production costs.

[0022] In one embodiment of this application, the plug-in fixing plate is provided with through holes corresponding to the test plug-ins, and the test plug-ins are detachably connected to the through holes.

[0023] Each test plug-in is detachably connected to the plug-in mounting plate, which facilitates quick replacement of test plug-ins according to different testing needs. This simplifies operation, improves testing efficiency, and reduces maintenance and replacement costs.

[0024] In one embodiment of this application, the bottom of the tooling base plate is provided with casters.

[0025] Multiple casters are installed at the bottom of the tooling base plate, which makes it easy for the operator to quickly move the entire tooling base plate to the required position, greatly improving the convenience of moving the tooling base plate and reducing the labor intensity of the operator in handling it.

[0026] In one embodiment of this application, the plug-in fixing plate is further provided with a limiting block, which can cooperate with the limiting port on the bracket for placing the battery pack to ensure that the test plug-in is accurately inserted into the plug interface of the battery pack.

[0027] By cooperating with the limiting block on the plug-in fixing plate and the limiting port on the bracket where the battery pack is placed, the plug-in fixing plate and the battery pack can be quickly and accurately positioned, ensuring that each test plug-in is accurately connected to the battery pack interface, thus ensuring the accuracy and reliability of the test results.

[0028] In one embodiment of this application, the caster wheel is provided with a locking member that can lock the caster wheel when it moves to a designated position.

[0029] By installing locking components on the casters, the casters can be quickly and stably locked in the designated position, preventing the tooling base plate from accidentally sliding or shifting position, thus significantly improving the stability and safety of the tooling base plate in the designated position.

[0030] In one embodiment of this application, the plug-in fixing plate is made of aluminum alloy.

[0031] The plug-in fixing plate is made of aluminum alloy, which makes it lightweight and can significantly reduce the overall weight of the device, making it easier for operators to handle and assemble, and reducing the intensity of manual labor.

[0032] By adopting the above technical solution, the lifting and lowering movement of the test plug is precisely controlled by the lifting cylinder, so as to achieve reliable connection between the test plug and the battery pack interface, avoid human connection error, improve test efficiency and test accuracy, reduce manual operation intensity, improve the test quality of the battery pack, and ensure the product reliability of the battery pack in the production and delivery stages. Attached Figure Description

[0033] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:

[0034] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0035] 10. Tooling base plate; 20. Insertion fixing plate; 21. Through hole; 30. Limit block; 40. Lifting cylinder; 50. Telescopic guide column; 60. Support frame; 70. Casters; 80. Control unit. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain this utility model and do not constitute a limitation on this utility model.

[0037] like Figure 1 As shown, in order to achieve the above objectives, this utility model proposes a battery pack testing fixture, comprising:

[0038] Tooling base plate 10;

[0039] At least one lifting cylinder 40, the fixed end of which is connected to the tooling base plate 10;

[0040] The plug-in fixing plate 20 is connected to the telescopic shaft of the lifting cylinder 40;

[0041] The test plug-in is connected to the plug-in mounting plate 20; and

[0042] The control unit 80 is connected to the lifting cylinder 40 and is used to control the lifting cylinder 40 to rise or fall, so as to drive the test plug to connect with the interface of the battery pack placed on the bracket.

[0043] Specifically, the battery pack testing fixture includes a fixture base plate 10, at least one lifting cylinder 40, a plug-in fixing plate 20, test plugs, and a control unit 80. The number of lifting cylinders 40 can be selected based on the weight of the test plugs. Preferably, one lifting cylinder 40 is positioned at the center of the fixture base plate 10 to ensure smooth lifting. The fixed end of the lifting cylinder 40 is securely connected to the upper surface of the fixture base plate 10 by bolts, ensuring that the telescopic shaft of the lifting cylinder 40 is perpendicular to the fixture base plate 10. The plug-in fixing plate 20 is connected to the free end of the telescopic shaft of the lifting cylinder 40 by bolts or welding, allowing the plug-in fixing plate 20 to move up and down with the telescopic shaft of the lifting cylinder 40. The test plugs are fixedly mounted on the plug-in fixing plate 20 by bolts, and the installation position of the test plugs corresponds to the position of the battery pack's connector for accurate insertion testing. The control unit 80 is connected to the solenoid valve or pneumatic valve of the lifting cylinder 40 via a signal line. After receiving the test start command, the control unit 80 controls the extension axis of the lifting cylinder 40 to move upward or downward by driving the solenoid valve or pneumatic valve, thereby driving the plug fixing plate 20 and the test plug installed on the plug fixing plate 20 to move upward or downward, so that the test plug can be accurately inserted into or detached from the battery pack connector located on the bracket.

[0044] By adopting the above technical solution, the lifting cylinder 40 precisely controls the lifting movement of the test plug, realizing reliable connection between the test plug and the battery pack interface, avoiding human connection errors, improving testing efficiency and accuracy, reducing manual operation intensity, improving the testing quality of the battery pack, and ensuring the product reliability of the battery pack in the production and delivery stages.

[0045] In one embodiment of this application, at least one telescopic guide post 50 is further included, the first end of which is connected to the tooling base plate 10, and the second end of which is connected to the plug-in fixing plate 20.

[0046] Specifically, the telescopic guide columns 50 are preferably four in number and evenly distributed on the tooling base plate 10. The first end of the telescopic guide column 50 is firmly fixed to the upper surface of the tooling base plate 10 by bolt connection, and the second end of the telescopic guide column 50 is fixedly connected to the bottom of the plug-in fixing plate 20 by bolt connection. The telescopic guide column 50 and the lifting cylinder 40 are arranged parallel to each other and are used to guide the plug-in fixing plate 20 during the up and down movement of the telescopic shaft of the lifting cylinder 40, so as to prevent the plug-in fixing plate 20 from shifting or tilting during the lifting process.

[0047] By adopting the above technical solution, the test plug is moved up and down by the lifting cylinder 40. With the guidance of the telescopic guide column 50, the test plug can be effectively prevented from shifting or tilting during the lifting process, ensuring accurate alignment and reliable insertion of the test plug and the battery pack interface, and improving the stability and accuracy of the insertion.

[0048] In one embodiment of this application, the number of telescopic guide posts 50 is four, and the four telescopic guide posts 50 are evenly distributed on the tooling base plate 10.

[0049] Specifically, four telescopic guide columns 50 are evenly distributed along the four vertices of a rectangle or square on the upper surface of the fixture base plate 10. The first end of each telescopic guide column 50 is firmly connected to the fixture base plate 10 by bolts, and the second end of each telescopic guide column 50 is firmly connected to the bottom surface of the plug-in fixing plate 20 by bolts. The axes of the four telescopic guide columns 50 are parallel to the telescopic axis of the lifting cylinder 40, and the four telescopic guide columns 50 and the lifting cylinder 40 work together to ensure that the plug-in fixing plate 20 remains stable during the lifting process, preventing the plug-in fixing plate 20 and the test plug from shifting or tilting during the lifting process.

[0050] By adopting the above technical solution, the lifting cylinder 40 precisely controls the lifting movement of the test plug, and with the guidance of four evenly distributed telescopic guide columns 50, the stability and accuracy of the plug fixing plate 20 and the test plug during the up and down movement can be significantly improved.

[0051] In one embodiment of this application, the tooling base plate 10 is further provided with a support frame 60, which is sleeved on the outer side wall of the lifting cylinder 40 to limit the sway of the lifting cylinder 40.

[0052] Specifically, the number of support frames 60 corresponds to the number of lifting cylinders 40. The support frames 60 are sleeved on the outer wall of the lifting cylinders 40 and are firmly connected to the tooling base plate 10 by bolts. The support frames 60 are used to laterally limit the lifting cylinders 40 to limit the swaying of the lifting cylinders 40 during the extension and retraction movement, and ensure the stability of the lifting cylinders 40. At the same time, when the lifting cylinders 40 descend to the lowest point, the support frames 60 can also support the plug-in fixing plate 20 to reduce the working pressure of the lifting cylinders 40.

[0053] By adopting the above technical solution, the support frame 60 effectively limits the lifting cylinder 40, which can significantly improve the stability of the plug-in fixing plate 20 and the test plug-in during the lifting process, prevent the lifting cylinder 40 from swaying during the operation, and ensure that the test plug-in and the battery pack plug interface are accurately aligned and reliably plugged in.

[0054] In one embodiment of this application, the support frame 60 is I-shaped.

[0055] Specifically, the number of I-shaped support frames 60 corresponds to the number of lifting cylinders 40. Each I-shaped support frame 60 is firmly fixed to the upper surface of the tooling base plate 10 by bolts. The middle of the I-shaped support frame 60 is provided with a through hole that matches the outer diameter of the lifting cylinder 40. The outer side wall of the lifting cylinder 40 is fitted into the through hole of the I-shaped support frame 60. The I-shaped support frame 60 is used to provide effective lateral limiting during the extension and retraction of the lifting cylinder 40, restricting the lateral sway of the lifting cylinder 40 and improving the stability of the lifting cylinder 40 during operation.

[0056] By adopting the above technical solution and using the I-shaped support frame 60, the space occupied by the support frame 60 can be reduced, thus lowering production costs.

[0057] In one embodiment of this application, the plug-in fixing plate is provided with through holes 21 corresponding to the test plug-ins, and the test plug-ins are detachably connected to the through holes 21.

[0058] Specifically, the plug-in fixing plate is a rectangular plate structure. Multiple through holes 21 are vertically formed on the upper surface of the plug-in fixing plate. These through holes 21 are evenly arranged in an array, and the size and position of each through hole 21 match the corresponding test plug-in. The outer diameter of each test plug-in is slightly smaller than the inner diameter of the corresponding through hole 21, allowing each test plug-in to be inserted into the through hole 21 from below. Each test plug-in has a limiting flange structure at its top with a diameter larger than that of the through hole 21. When each test plug-in is inserted into its corresponding through hole 21, the limiting flange structure abuts against the upper surface of the plug-in fixing plate, achieving axial limiting of each test plug-in. The cylindrical structure is equipped with elastic buckles on its sidewalls, and the inner wall of the through hole 21 is provided with an annular groove that mates with the elastic buckles. When each test plug is fully inserted into the through hole 21, the elastic buckle of each test plug engages with the annular groove on the inner wall of the through hole 21, thereby achieving radial fixation of each test plug within the through hole 21. When it is necessary to disassemble the test plug, the elastic buckle of the test plug can be pressed inward to disengage the elastic buckle of each test plug from the annular groove on the inner wall of the through hole 21, and then each test plug can be pulled out vertically upward along the plug fixing plate to achieve disassembly. Preferably, the test plug and the through hole 21 are connected by a fixed connection.

[0059] The above technical solution uses a detachable connection between each test plug and the plug fixing plate, which facilitates quick replacement of test plugs according to different testing needs. The operation is simple and improves the efficiency of testing work, while reducing maintenance and replacement costs.

[0060] In one embodiment of this application, the bottom of the tooling base plate 10 is provided with casters 70.

[0061] Specifically, the tooling base plate 10 has a rectangular plate structure. At each of the four corners of the bottom of the tooling base plate 10, there are casters 70. Each caster 70 is fixedly connected to the bottom surface of the tooling base plate 10 by bolts. Each caster 70 includes a bracket, a pivot, and a wheel. The bracket of each caster 70 is directly fixed to the bottom surface of the tooling base plate 10 by bolts. The wheel is rotatably connected to the bracket of each caster 70 via a pivot, allowing each caster 70 to rotate 360° around the bracket. Through the cooperation of multiple casters 70 at the bottom of the tooling base plate 10, the tooling base plate 10 can move flexibly in any direction on the horizontal plane.

[0062] By adopting the above technical solution, multiple casters 70 are provided at the bottom of the tooling base plate 10, which makes it easy for the operator to quickly move the entire tooling base plate 10 to the required position, greatly improving the convenience of moving the tooling base plate 10 and reducing the labor intensity of the operator in handling it.

[0063] In one embodiment of this application, the plug-in fixing plate 20 is further provided with a limiting block 30, which can cooperate with the limiting port on the bracket for placing the battery pack to ensure that the test plug-in is accurately inserted into the plug interface of the battery pack.

[0064] Specifically, the plug-in fixing plate 20 has a rectangular plate structure. A limiting block 30 is provided on the upper surface of the plug-in fixing plate 20. The limiting block 30 has a cuboid structure and is fixedly connected to the upper surface of the plug-in fixing plate 20 by bolts. A limiting opening is provided on the lower surface of the battery pack holder. The shape and size of the limiting opening perfectly match the limiting block 30 on the plug-in fixing plate 20, allowing the limiting block 30 to be accurately inserted into the limiting opening. During testing, the limiting block 30 on the plug-in fixing plate 20 is inserted into the limiting opening of the battery pack holder. The limiting block 30 and the limiting opening cooperate to achieve precise positioning of the plug-in fixing plate 20 and the battery pack holder. At this time, the test plug and the connector on the battery pack are precisely aligned, ensuring that each test plug can be accurately inserted into the corresponding connector of the battery pack, avoiding difficulties in insertion or deviation in insertion position due to positioning errors.

[0065] By adopting the above technical solution, the limiting block 30 on the plug-in fixing plate 20 cooperates with the limiting port on the bracket where the battery pack is placed, so that the plug-in fixing plate 20 and the battery pack can be quickly and accurately positioned, ensuring that each test plug-in is accurately connected to the battery pack interface, and ensuring the accuracy and reliability of the test results.

[0066] In one embodiment of this application, the caster wheel 70 is provided with a locking member that can lock the caster wheel 70 when it moves to a designated position.

[0067] Specifically, the caster wheel 70 includes a bracket, a wheel body, and a locking component. The bracket of the caster wheel 70 is fixedly connected to the bottom surface of the tooling base plate 10 by bolts. The wheel body is rotatably connected inside the bracket of the caster wheel 70 via a pivot, allowing the wheel body to rotate freely 360° around the pivot. The locking component is located on one side of the bracket of the caster wheel 70 and includes a pedal, a connecting rod, and a brake block. The pedal is hinged to the outside of the bracket, with one end of the pedal hinged to one end of the connecting rod, and the other end of the connecting rod fixedly connected to the brake block. The pressure block is located on the outer periphery of the wheel body and corresponds to the surface of the wheel body. When the tooling base plate 10 moves to the designated position, the operator steps down on the pedal, which drives the linkage to move, causing the brake pressure block to move toward the surface of the wheel body and press against the outer periphery of the wheel body, thereby preventing the wheel body from continuing to rotate and keeping the caster 70 in a locked state. When the operator lifts the pedal upward, the brake pressure block moves away from the wheel body along with the linkage and disengages from the wheel body, thereby releasing the lock on the wheel body and allowing the caster 70 to return to a free rotation state.

[0068] By adopting the above technical solution, by setting a locking component on the universal wheel 70, the universal wheel 70 can be quickly and stably locked in the designated position, preventing the tooling base plate 10 from accidentally sliding or shifting position, and significantly improving the stability and safety of the tooling base plate 10 in the designated position.

[0069] In one embodiment of this application, the plug-in fixing plate 20 is made of aluminum alloy.

[0070] Specifically, the plug-in fixing plate 20 is made of aluminum alloy in one piece. The main structure of the plug-in fixing plate 20 is rectangular plate. The surface of the plug-in fixing plate 20 is machined to have through holes 21 that correspond one-to-one with the test plug-in and limit block 30 structures that match the limit openings on the bracket for placing the battery pack. The through holes 21 are detachably connected to the test plug-in, and the limit block 30 and the plug-in fixing plate 20 are an integral structure.

[0071] By adopting the above technical solution, the plug-in fixing plate 20 is made of aluminum alloy, which is lightweight and can significantly reduce the overall weight of the device, making it easier for operators to handle and assemble, and reducing the intensity of manual labor.

[0072] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A battery pack test fixture, comprising: The utility model relates to a test fixture for battery pack, comprising: a fixture base plate; at least one lifting cylinder, the fixed end of the lifting cylinder being connected to the fixture base plate; a plug-in fixing plate, connected to the telescopic shaft of the lifting cylinder; a test plug, connected to the plug-in fixing plate; and a control unit, connected to the lifting cylinder, for controlling the lifting cylinder to ascend or descend to drive the test plug to plug into the plug-in interface of a battery pack placed on a support. The utility model further comprises at least one telescopic guide column, the first end of the telescopic guide column being connected to the fixture base plate, and the second end of the telescopic guide column being connected to the plug-in fixing plate.

2. The battery pack test fixture of claim 1, wherein, The number of the telescopic guide columns is four, and the four telescopic guide columns are uniformly distributed on the fixture base plate.

3. The battery pack test fixture of claim 2, wherein, The fixture base plate is further provided with a support frame, which is sleeved on the outer sidewall of the lifting cylinder to limit the deflection of the lifting cylinder.

4. The battery pack test fixture of any one of claims 1 to 3, wherein, The support frame is I-shaped.

5. The battery pack test fixture of claim 4, wherein, The plug-in fixing plate is provided with a via hole corresponding to the test plug, and the test plug is detachably connected in the via hole.

6. The battery pack test fixture of claim 1, wherein, The bottom of the fixture base plate is provided with a universal wheel.

7. The battery pack test fixture of claim 1, wherein, The plug-in fixing plate is further provided with a limiting block, which can cooperate with a limiting opening on the support frame for placing a battery pack to ensure that the test plug is accurately plugged into the plug-in interface of the battery pack.

8. The battery pack test fixture of claim 1, wherein, The universal wheel is provided with a locking member for locking the universal wheel when the universal wheel moves to a specified position.

9. The battery pack test fixture of claim 7, wherein, The plug-in fixing plate is made of aluminum alloy material.

10. The battery pack test fixture of claim 1, wherein, ​

Images