A detection device of a BMS battery management system

Abstract

This invention relates to the field of BMS battery system testing technology, and discloses a testing device for a BMS battery management system. The insulation tester body has an auxiliary fixing drawer slidably connected to its internal cavity. The auxiliary fixing drawer's internal cavity is equipped with a right-angle plate for clamping the battery management system, a fixing frame for mounting the right-angle plate and slidably connected to the auxiliary fixing drawer, and a self-clamping assembly that provides clamping force to the right-angle plate. The self-clamping assembly includes a connecting frame group for converting the pressure of the battery management system into tensile force and a second transmission frame that ultimately pulls the fixing frame. An automatic retraction assembly for automatically storing and retracting the test pen is provided in the storage slot. This invention facilitates the auxiliary fixing of the BMS battery management system, making subsequent insulation testing or other types of testing easier. Simultaneously, the test pen and its connecting wires are automatically stored in the storage slot or cavity after use, effectively protecting the test pen and automatically retracting the wires for convenient subsequent testing.

Description

Technical Field

[0001] This invention relates to the field of BMS (Battery Management System) testing technology, specifically to a testing device for a BMS (Battery Management System). Background Technology

[0002] The Battery Management System (BMS) is a crucial component of the power battery system in electric vehicles. On one hand, it detects, collects, and preliminarily calculates real-time battery status parameters, and controls the on / off state of the power supply circuit based on comparisons between detected and permissible values. On the other hand, it reports the collected key data to the vehicle controller, receives instructions from the controller, and coordinates with other systems on the vehicle.

[0003] When testing the BMS (Battery Management System) module, an insulation tester is required. Most existing insulation testers are designed as standalone units. This design makes it inconvenient to secure the BMS battery module during testing, easily leading to separation between the tester and the module, thus affecting the accuracy of the test. Furthermore, while the testing pen and its connecting wires are designed with storage compartments or slots, they still need to be manually placed back in after testing. This can easily result in the pen being covered or squeezed by other instruments, causing unnecessary damage. Additionally, simply placing the wires in the compartments or slots makes them prone to tangling for future testing. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a testing device for a BMS (Battery Management System). This device solves the problems of inconvenience in securing the BMS during insulation testing, the need to manually return the testing pen and its connecting wires to the storage slot or cavity after use (which compromises the protection of the testing pen and causes the wires to become tangled, inconveniencing subsequent tests), and the difficulty in protecting the testing pen and the inconvenience caused by the tangled wires.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A testing device for a BMS (Battery Management System) includes an insulation tester body and a storage slot on the insulation tester body for holding a test pen. An auxiliary fixing drawer is slidably connected to the inner cavity of the insulation tester body. The inner cavity of the auxiliary fixing drawer is provided with a right-angle plate for clamping the battery management system, a fixing frame for mounting the right-angle plate and slidably connected to the auxiliary fixing drawer, and a self-clamping assembly for providing clamping force to the right-angle plate. The self-clamping assembly includes a connecting frame assembly for converting pressure from the battery management system into tension and a second transmission frame for ultimately pulling the fixing frame. The connecting frame assembly is movably disposed within the inner cavity of the auxiliary fixing drawer. An automatic winding assembly for automatically winding and unwinding the test pen is provided in the storage slot. The automatic winding assembly includes a clamping sleeve for clamping the test pen and a winding mushroom-shaped reel for providing winding power. The winding mushroom-shaped reel is fixedly connected to the connecting wire of the test pen via a torsion spring.

[0009] Preferably, the auxiliary fixing drawer includes a sliding drawer, which is slidably connected to the inner cavity of the insulation detector body. The self-clamping assembly is provided in the middle of the sliding drawer. The self-clamping assembly includes a first rotating plate, a second rotating plate, a rotating plate mounting shaft fixedly connected to the cavity wall of the sliding drawer, and a connecting shaft symmetrically arranged and fixed between the first rotating plates, a first transmission frame rotatably connected to the connecting shaft, and a transmission shaft fixedly connected to the first transmission frame. The rotating plate mounting shaft passes through and is rotatably connected to both the first rotating plate and the second rotating plate. The second transmission frame is rotatably connected to the transmission shaft.

[0010] Preferably, the inner cavity of the insulation tester body is provided with an installation groove and a mating groove, the two side walls of the installation groove are provided with triangular blocks, the upper end face of the sliding drawer is slidably connected to the mating groove through an auxiliary slider, and the two side walls of the sliding drawer are provided with through grooves that mate with the triangular blocks.

[0011] Preferably, the sliding drawer has limit rails on both sides and the front and rear walls of the sliding drawer. The fixed frame is symmetrically slidably connected in the limit rails, and the right angle plate is symmetrically fixedly connected to the fixed frame. The inner cavity of the limit rail is divided into equally spaced partition grooves. The inner cavity of the partition grooves on the left and right sides is provided with expansion springs. The expansion springs are located between the partition groove wall and the side of the fixed frame. The fixed frame is provided with an extension block on the side near the triangular block. The extension block has an inclined surface that is parallel to the inclined surface of the triangular block and can closely abut against it.

[0012] Preferably, the inner cavity of the sliding drawer is provided with a cover plate above the fixed frame, and the cover plate is provided with a rectangular through groove with the same width as the right angle plate. The top of the first rotating plate and the second rotating plate are provided with support pads. The cover plate is provided with a protective cover above the support pads. The upper end surface of the protective cover is provided with an elliptical through groove around the support pads. The bottom of the sliding drawer cavity is provided with a limiting groove. The lower end surface of the fixed frame is provided with a limiting slider that cooperates with the limiting groove. The limiting groove and the limiting slider are used to restrict the fixed frame to move only in the horizontal direction.

[0013] Preferably, the connecting wire includes a winding section, a spiral winding section, and a twisting section. The connection between the winding section and the spiral winding section is the twisting section. The winding section and the spiral winding section are respectively wound around the shaft end of the winding mushroom reel. The surface of the inner ring connecting wire of the winding section is fixedly connected to the shaft end of the winding mushroom reel through the torsion spring. The upper end of the winding section is electrically connected to the detection pen. The lower end of the spiral winding section is electrically connected to the insulation detector body. The shaft end of the winding mushroom reel is rotatably connected to the insulation detector body. The winding section is wound between the disc of the winding mushroom reel and the bottom of the storage groove.

[0014] Preferably, the clamping sleeve assembly includes a clamping frame fixedly connected to the bottom of the storage slot, a first clamping sleeve, and a second clamping sleeve. The first clamping sleeve is fixedly connected to the upper end face of the clamping frame, and the second clamping sleeve is slidably connected to the upper end face of the clamping frame through a guide groove. An mounting plate is fixedly connected to the edge of the upper end face of the clamping frame, and a connecting spring is provided between the mounting plate and the second clamping sleeve.

[0015] Preferably, the bottom of the storage groove is fixedly connected to a mounting base between the take-up mushroom tray and the clamping frame, and a guide groove wheel is rotatably connected to the mounting base, with the connecting wire passing through the bottom of the guide groove wheel.

[0016] (III) Beneficial Effects

[0017] This invention provides a testing device for a BMS (Battery Management System). It has the following advantages:

[0018] The testing device for this BMS battery management system, through its auxiliary fixing drawer and self-clamping component, facilitates the fixing of the BMS battery management system, making it convenient for subsequent insulation testing or other types of testing. The automatic retraction component and clamping component automatically store the test pen and its connecting wires in the storage slot or cavity after use, effectively protecting the test pen and automatically retracting the wires for easy re-testing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the through-slot layout structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the mounting slot of the present invention;

[0022] Figure 4 This is a schematic diagram of the self-clamping component and sliding drawer installation structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the triangular block and mating block structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the self-clamping component structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the internal structure of the sliding drawer of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the storage slot of the present invention.

[0027] Figure 9 This is a schematic diagram of the guide wheel mounting structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the installation structure of the first clamping sleeve and the second clamping sleeve of the present invention;

[0029] Figure 11 This is a schematic diagram of the installation structure of the mushroom-shaped wire take-up reel and the connecting wire of the present invention.

[0030] In the diagram: 1. Insulation tester body; 11. Mounting slot; 12. Triangular block; 13. Mating slot; 2. Storage slot; 3. Test pen; 4. Auxiliary fixing drawer; 41. Sliding drawer; 42. Through slot; 43. Auxiliary slider; 44. Limiting rail; 45. Dividing slot; 46. Expansion spring; 47. Fixing frame; 48. Mating block; 49. Right angle plate; 410. Cover plate; 5. Self-clamping assembly; 51. First rotating plate; 52. Second rotating plate; 53. Rotating plate mounting shaft; 54. Support pad; 55. Connection. 56. Shaft; 57. First transmission frame; 58. Transmission shaft; 59. Second transmission frame; 50. Limiting slider; 510. Limiting groove; 511. Protective cover; 6. Automatic take-up assembly; 61. Take-up mushroom reel; 611. Take-up section; 612. Spiral winding section; 613. Torsion spring; 614. Twisting section; 62. Connecting wire; 63. Mounting base; 64. Guide groove wheel; 65. Clamping frame; 66. First clamping sleeve; 67. Second clamping sleeve; 68. Guide groove; 69. Mounting plate; 610. Connecting spring. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1 This invention provides a technical solution: a testing device for a BMS battery management system, including an insulation tester body 1 and a storage slot 2 on the insulation tester body for storing a test pen 3. An auxiliary fixing drawer 4 is slidably connected to the inner cavity of the insulation tester body 1. The inner cavity of the auxiliary fixing drawer 4 is provided with a right-angle plate 49 for clamping the battery management system, a fixing frame 47 for mounting the right-angle plate 49 and slidably connected to the auxiliary fixing drawer 4, and a self-clamping component 5 for giving the right-angle plate 49 clamping force. The self-clamping component 5 includes a connecting frame assembly for converting the pressure of the battery management system into tension and a second transmission frame 58 for finally pulling the fixing frame 47 to move. The connecting frame assembly is movably disposed in the inner cavity of the auxiliary fixing drawer 4. An automatic winding component 6 for automatically winding and unwinding the test pen 3 is provided in the storage slot 2. The automatic winding component 6 includes a clamping sleeve assembly for clamping the test pen 3 and a winding mushroom reel 61 for providing winding power. The winding mushroom reel 61 is fixedly connected to the connecting wire 62 of the test pen 3 by a torsion spring 613. This invention, through the auxiliary fixing drawer 4 and the self-clamping component 5, can conveniently assist in fixing the BMS battery management system, facilitating subsequent insulation testing or other types of testing; through the automatic retraction component 6 and the clamping component, the test pen 3 and its connecting wires 62 can be automatically retracted into the storage slot 2 or cavity after use, effectively protecting the test pen 3 and automatically retracting the wires for convenient next testing.

[0033] In this embodiment, the auxiliary fixed drawer 4 includes a sliding drawer 41, which is slidably connected to the inner cavity of the insulation detector body. A self-clamping assembly 5 is provided in the middle of the sliding drawer 41. The self-clamping assembly 5 includes a first rotating plate 51, a second rotating plate 52, a rotating plate mounting shaft 53 fixedly connected to the cavity wall of the sliding drawer 41, and symmetrically arranged connecting shafts 55 fixed between the first rotating plates 51, a first transmission frame 56 rotatably connected to the connecting shafts 55, and a transmission shaft 57 fixedly connected to the first transmission frame 56. The rotating plate mounting shaft 53 passes through and is rotatably connected to both the first rotating plate 51 and the second rotating plate 52. The second transmission frame 58 is rotatably connected to the transmission shaft 57. (Refer to...) Figure 6As shown, by setting the first rotating plate 51 and the second rotating plate 52, when the battery pack management system is placed in the inner cavity of the sliding drawer 41, the battery pack management system squeezes the first rotating plate 51 and the second rotating plate 52, thereby causing the two rotating plates to rotate. This causes the two first transmission frames 56 to move closer to each other, which in turn pulls the second transmission frame 58 to move closer in the same way. This causes the second transmission frame 58 to pull the fixing frame 47 to move towards the battery pack management system. Therefore, the right-angle plate 49 clamps the battery pack management system around its perimeter, completing the automatic clamping and fixing of the battery pack management system.

[0034] Specifically, the inner cavity of the insulation tester body is provided with an installation groove 11 and a mating groove 13. Triangular blocks 12 are provided on both sides of the installation groove 11. The upper end face of the sliding drawer 41 is slidably connected to the mating groove 13 through an auxiliary slider 43. Through grooves 42 that mate with the triangular blocks 12 are provided on both sides of the sliding drawer 41.

[0035] Specifically, both sides of the sliding drawer 41 have limit rails 44 on their front and rear walls. A fixed frame 47 is symmetrically slidably connected within the limit rails 44, and a right-angle plate 49 is symmetrically fixedly connected to the fixed frame 47. The inner cavity of the limit rails 44 is divided by equally spaced partition grooves 45. An expansion spring 46 is installed within the left and right partition grooves 45, positioned between the groove wall of the partition groove 45 and the side of the fixed frame 47. An extension block is provided on the side of the fixed frame 47 closest to the triangular block 12, and the extension block has an inclined surface parallel to the inclined surface of the triangular block 12, allowing for close contact. (Refer to...) Figure 4 , 5 As shown in Figure 7, the expansion spring 46 and the mating block 48 allow the expansion spring 46 to return to its original shape when the sliding drawer 41 is pulled out of the mounting slot 11. This provides an outward pushing force to the mating block 48, causing the mating block 48 to move the fixing frame 47 outward. This allows the fixing frame 47 to automatically expand when the sliding drawer 41 is pulled out of the mounting slot 11, facilitating the placement of the battery management system between the right-angle plates 49 and on the self-clamping assembly 5. Simultaneously, due to the triangular block 12 and the inclined surface on the mating block 48, when the sliding drawer 41 is pushed back into the mounting slot 11, the inclined surface of the triangular block 12 engages with the inclined surface on the mating block 48, causing the mating block 48 to receive an inward squeezing force. This causes the mating block 48 to move the fixing frame 47 closer together, thus compressing the expansion spring 46. Therefore, when the sliding drawer 41 is pulled out again, the fixing bracket 47 automatically expands due to the elastic force of the expansion spring 46, so as to re-test the battery pack management system.

[0036] Furthermore, a cover plate 410 is provided above the fixed frame 47 in the inner cavity of the sliding drawer 41, and a rectangular through groove with the same width as the right-angle plate 49 is provided on the cover plate 410. Support pads 54 are provided at the top of both the first rotating plate 51 and the second rotating plate 52. A protective cover 511 is provided on the cover plate 410 above the support pads 54. An elliptical through groove is provided on the upper surface of the protective cover 511 surrounding the support pads 54. A limiting groove 510 is provided at the bottom of the sliding drawer 41 cavity, and a limiting slider 59 that cooperates with the limiting groove 510 is provided on the lower surface of the fixed frame 47. The limiting groove 510 and the limiting slider 59 are used to restrict the fixed frame 47 to only move horizontally. (Refer to...) Figure 3 As shown, the support pad 54 effectively increases the contact area between the self-clamping component 5 and the lower end face of the battery management system, improving the stability of the battery management system placement. The cover plate 410 and protective cover 511 effectively conceal the various transmission components within the inner cavity of the sliding drawer 41, thus improving the overall aesthetics. Simultaneously, the rectangular and elliptical through slots prevent interference between the cover plate 410 and the protective cover 511 and the movement of the right-angle plate 49 and the support pad 54. The limiting slider 59 and limiting groove 510 ensure that the fixing frame 47 can only slide along the bottom of the sliding drawer 41 cavity, effectively preventing oblique movement caused by the power transmitted from the second transmission frame 58, which would affect the subsequent clamping of the battery management system.

[0037] In this embodiment, the connecting wire 62 includes a winding portion 611, a spiral winding portion 612, and a twisted portion 614. The connection between the winding portion 611 and the spiral winding portion 612 is the twisted portion 614. The winding portion 611 and the spiral winding portion 612 are respectively wound around the shaft end of the take-up mushroom reel 61. The surface of the inner ring of the winding portion 611 connecting wire 62 is fixedly connected to the shaft end of the take-up mushroom reel 61 by a torsion spring 613. The upper end of the winding portion 611 is electrically connected to the testing pen 3, and the lower end of the spiral winding portion 612 is electrically connected to the insulation detector body 1. The shaft end of the take-up mushroom reel 61 is rotatably connected to the insulation detector body 1. The winding portion 611 is wound between the disc of the take-up mushroom reel 61 and the bottom of the storage groove 2. (Refer to...) Figure 11As shown, the torsion spring 613 allows the take-up mushroom reel 61 of the connecting wire 62 to rotate when the operator pulls it, causing the take-up section 611 to automatically unwind the wire. Once the take-up section 611 has finished unwinding, the torsion spring 613 is stretched and extended. After the operator uses the testing pen 3 to perform the test, the torsion spring 613 causes the connecting wire 62 to rewind onto the shaft end of the take-up mushroom reel 61. During the process of the take-up mushroom reel 61 rotating to unwind the connecting wire 62 at the take-up section 611, the spiral winding section 612 of the connecting wire 62 continuously unfolds or twists as the take-up mushroom reel 61 rotates. However, when the take-up mushroom reel 61 rewinds the connecting wire 62 at the take-up section 611, the wire at the spiral winding section 612 returns to its original position. At this time, the testing pen 3 is also pulled into the clamping sleeve along with the connecting wire 62 and clamped there.

[0038] Specifically, the clamping sleeve assembly includes a clamping frame 65 fixedly connected to the bottom of the storage slot 2, a first clamping sleeve 66, and a second clamping sleeve 67. The first clamping sleeve 66 is fixedly connected to the upper end face of the clamping frame 65, and the second clamping sleeve 67 is slidably connected to the upper end face of the clamping frame 65 through a guide groove 68. A mounting plate 69 is fixedly connected to the edge of the upper end face of the clamping frame 65, and a connecting spring 610 is provided between the mounting plate 69 and the second clamping sleeve 67. (Refer to...) Figure 10 By using the connecting spring 610 and the movable second clamping sleeve 67, the test pen 3 can be clamped and fixed between the first clamping sleeve 66 and the second clamping sleeve 67 under the action of the connecting spring 610 after it automatically retracts. This avoids the test pen 3 from sliding in the storage slot 2 and being damaged during daily carrying of the insulation tester body 1.

[0039] Furthermore, a mounting base 63 is fixedly connected to the bottom of the storage slot 2 between the cable tray 61 and the clamping frame 65. A guide wheel 64 is rotatably connected to the mounting base 63, and the connecting wire 62 passes through the bottom of the guide wheel 64. (See reference) Figure 8 and Figure 9 As shown, the guide groove wheel 64 can limit the horizontal movement of the connecting wire 62, thereby cooperating with the disc end of the take-up mushroom reel 61 to wind the connected constraint into the same horizontal plane, avoiding the mess and tangling of the wires in normal conditions; at the same time, the guide groove wheel 64 can provide an arc transition at the bend of the connecting wire 62, effectively avoiding the situation where the bending angle of the connecting wire 62 is too small or the non-arc transition is easy to break at the bend.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] 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. A testing device for a BMS (Battery Management System), comprising an insulation tester body and a storage slot disposed on the insulation tester body for accommodating a test pen, characterized in that: An auxiliary fixing drawer is slidably connected to the inner cavity of the insulation tester body. The inner cavity of the auxiliary fixing drawer is equipped with a right-angle plate for clamping the battery management system, a fixing frame for mounting the right-angle plate and slidably connected to the auxiliary fixing drawer, and a self-clamping assembly that provides clamping force to the right-angle plate. The self-clamping assembly includes a connecting frame assembly for converting the pressure of the battery management system into tensile force and a second transmission frame that ultimately pulls the fixing frame. The connecting frame assembly is movably disposed within the inner cavity of the auxiliary fixing drawer. An automatic winding assembly for automatically retracting and extending the test pen is provided in the storage slot. The automatic winding assembly includes a clamping sleeve for clamping the test pen and a winding mushroom-shaped reel for providing winding power. The winding mushroom-shaped reel is fixedly connected to the connecting wire of the test pen via a torsion spring. The auxiliary fixing drawer includes a sliding drawer. The inner cavity of the insulation tester body has an installation groove and a mating groove. Triangular blocks are provided on both sides of the installation groove. The upper surface of the sliding drawer is slidably connected to the mating groove via an auxiliary slider. Through grooves that mate with the triangular blocks are provided on both sides of the sliding drawer. The front and rear walls of the sliding drawer are equipped with limit rails, and the fixed frame is symmetrically slidably connected within the limit rails. The right-angle plate is symmetrically fixedly connected to the fixed frame. The inner cavity of the limit rails is divided by equally spaced partition grooves. Expansion springs are installed in the left and right partition grooves, positioned between the groove wall and the side of the fixed frame. An extension block is provided on the side of the fixed frame near the triangular block, and the extension block has an inclined surface parallel to the inclined surface of the triangular block and capable of close contact. The inner cavity of the sliding drawer is located above the fixed frame. The self-clamping assembly includes a cover plate with a rectangular through slot equal in width to the right-angle plate. A first rotating plate and a second rotating plate are also included. Support pads are provided at the top of both the first and second rotating plates. A protective cover is provided on the cover plate above the support pads. An elliptical through slot is provided on the upper surface of the protective cover surrounding the support pads. A limiting groove is provided at the bottom of the sliding drawer cavity. A limiting slider, which mates with the limiting groove, is provided on the lower surface of the fixing frame. The limiting groove and the limiting slider restrict the fixing frame to horizontal movement only.

2. The detection device for a BMS battery pack management system according to claim 1, characterized in that: The sliding drawer is slidably connected to the inner cavity of the insulation tester body. The self-clamping assembly is provided in the middle of the sliding drawer. The self-clamping assembly also includes a rotating plate mounting shaft fixedly connected to the cavity wall of the sliding drawer, a connecting shaft symmetrically arranged and fixed between the first rotating plates, a first transmission frame rotatably connected to the connecting shaft, and a transmission shaft fixedly connected to the first transmission frame. The rotating plate mounting shaft passes through and is rotatably connected to both the first and second rotating plates. The second transmission frame is rotatably connected to the transmission shaft.

3. A testing device for a BMS battery pack management system according to any one of claims 1-2, characterized in that: The connecting wire includes a winding section, a spiral winding section, and a twisting section. The connection between the winding section and the spiral winding section is the twisting section. The winding section and the spiral winding section are respectively wound around the shaft end of the winding mushroom reel. The surface of the inner ring connecting wire of the winding section is fixedly connected to the shaft end of the winding mushroom reel through the torsion spring. The upper end of the winding section is electrically connected to the detection pen. The lower end of the spiral winding section is electrically connected to the insulation detector body. The shaft end of the winding mushroom reel is rotatably connected to the insulation detector body. The winding section is wound between the disc of the winding mushroom reel and the bottom of the storage groove.

4. The testing device for a BMS battery pack management system according to claim 3, characterized in that: The clamping sleeve assembly includes a clamping frame fixedly connected to the bottom of the storage slot, a first clamping sleeve, and a second clamping sleeve. The first clamping sleeve is fixedly connected to the upper end face of the clamping frame, and the second clamping sleeve is slidably connected to the upper end face of the clamping frame through a guide groove. An mounting plate is fixedly connected to the edge of the upper end face of the clamping frame, and a connecting spring is provided between the mounting plate and the second clamping sleeve.

5. The testing device for a BMS battery pack management system according to claim 4, characterized in that: The bottom of the storage slot is fixedly connected to the mounting base between the take-up mushroom tray and the clamping frame. A guide groove wheel is rotatably connected to the mounting base, and the connecting wire passes through the bottom of the guide groove wheel.

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