A battery safety detection device

Abstract

This utility model relates to the field of battery testing technology, and in particular to a battery safety testing device. Mounted on a base, it includes a compression mechanism and a support mechanism arranged opposite each other. The compression mechanism is slidably connected to the top of the base via a driving component. The support mechanism includes a support plate and a clamping assembly for fixing the battery connected to the end face of the support plate. A positioning structure is also provided between the clamping assembly and the support plate. The clamping assembly adjusts the multi-axial compression angle of the battery through the positioning structure. The clamping platform, through rotational positioning, cooperates with the compression mechanism to perform multi-axial compression testing on the battery. The compression force of the second compression spring is adjusted by rotating the butterfly part to ensure that the clamping platform does not rotate arbitrarily. Furthermore, an eccentric rod drives the clamping plate to clamp the battery in conjunction with the abutment part through eccentric clamping. Reversing the eccentric rod unlocks the clamping plate, making battery installation and removal convenient and quick.

Description

Technical Field

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

[0002] The background technologies of battery testing mainly involve battery performance monitoring, fault diagnosis and safety assessment. They focus on real-time monitoring of battery status, including key parameters such as voltage, current, internal resistance, capacity and temperature. Electronic devices record battery usage data and combine algorithms to predict battery life and diagnose potential faults.

[0003] As disclosed in the prior art Chinese patent announcement "CN217505408U", a power lithium battery extrusion testing device is applied in the field of power battery technology. The device has a screw hole on its fixed plate, through which a lead screw is screwed. One end of the lead screw, through the screw hole, rests against one side of a push plate. A pressure sensor is mounted on the other side of the push plate, resting against an extrusion end plate II. Kevlar straps are fitted onto the fixed plate and the extrusion end plate I. This power lithium battery extrusion testing device has a simple structure, low cost, and can conveniently and quickly perform batch extrusion testing on battery cells, effectively preventing substandard batteries from entering the market, reducing after-sales failure rates and maintenance costs. It is also applicable to the extrusion testing of different battery cell models.

[0004] In practice, multiple batteries are stacked together and then pressure tested. However, considering that the pressure may come from multiple axial angles when the battery is damaged, only a single axial direction of the battery can be pressure tested. This may lead to a deviation between the test results and the actual risk, resulting in poor practicality. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies that can only perform pressure tests on a single axial direction of the battery, and to propose a battery safety testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a battery safety testing device, mounted on a base, including a squeezing mechanism and a support mechanism arranged opposite to each other. The squeezing mechanism is slidably connected to the top of the base via a driving component. The support mechanism includes a support plate and a clamping assembly for fixing the battery connected to the end face of the support plate. The clamping assembly and the support plate are further provided with a positioning structure, and the clamping assembly adjusts the multi-axial pressure angle of the battery through the positioning structure.

[0007] Furthermore, the clamping assembly includes a clamping platform and a clamping plate. An abutment portion and a step portion are respectively provided on both sides of the end face of the clamping platform. The clamping plate is slidably connected to the step portion through a guide rod and a first compression spring.

[0008] Furthermore, an eccentric rod is rotatably connected to the end face of the stepped portion, and a recess is provided on the side of the clamping plate. The eccentric rod rotates eccentrically to drive the side of the eccentric rod away from the axis point to stop in the recess.

[0009] Furthermore, the positioning structure includes a protrusion, which is fixedly connected to the end face of the support plate. The protrusion is axially connected to the support plate, and the end face of the protrusion is provided with a plurality of positioning grooves along the axis.

[0010] Furthermore, a connecting rod is fixedly connected to the back of the clamping platform, and the connecting rod is slidably connected to the axis of the protrusion. A snap-fit ​​part is provided on the back of the clamping platform, and the snap-fit ​​part is engaged in the positioning groove.

[0011] Furthermore, a second compression spring is sleeved around the connecting rod, and a butterfly-shaped part is threaded to the free end of the connecting rod. The two ends of the second compression spring abut against the butterfly-shaped part and the side wall of the support plate, respectively.

[0012] The battery safety testing device proposed in this utility model has the following advantages: A clamping platform is connected to the end face of the support plate via a positioning structure. The clamping platform, through rotational positioning, works with a compression mechanism to perform multi-axial compression testing on the battery, avoiding the drawback of existing technologies that can only perform pressure testing on a single axis. Furthermore, the positioning structure further includes a second compression spring and a butterfly-shaped part around the connecting rod. Rotating the butterfly-shaped part adjusts the compression force of the second compression spring to ensure the clamping platform does not rotate arbitrarily. In addition, an eccentric rod drives the clamping plate to clamp the battery in conjunction with the abutment part through eccentric clamping. Reversing the eccentric rod unlocks the clamping plate, making battery installation and removal convenient and quick. The structure is simple and highly practical. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping assembly of this utility model; Figure 3 for Figure 2 A magnified structural diagram of area A; Figure 4 This is a schematic diagram of the positioning structure of this utility model; Figure 5 for Figure 4 A magnified structural diagram of area B.

[0014] In the diagram: 1. Base; 2. Extrusion mechanism; 3. Drive component; 4. Support plate; 5. Clamping assembly; 51. Clamping platform; 52. Clamping plate; 521. Recessed part; 53. Stepped part; 54. Guide rod; 55. First compression spring; 56. Eccentric rod; 57. Abutment part; 6. Positioning structure; 61. Protrusion part; 62. Positioning groove; 63. Connecting rod; 64. Snap-fit ​​part; 65. Second compression spring; 66. Butterfly-shaped part. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-5 A battery safety testing device is installed on a base 1 and includes a squeezing mechanism 2 and a support mechanism arranged opposite to each other. The squeezing mechanism 2 is slidably connected to the top of the base 1 via a driving member 3. The support mechanism includes a support plate 4 and a clamping assembly 5 for fixing the battery connected to the end face of the support plate 4. The clamping component 5 and the support plate 4 are further provided with a positioning structure 6, and the clamping component 5 adjusts the multi-axial pressure angle of the battery through the positioning structure 6.

[0017] In some embodiments, the extrusion mechanism 2 includes an extrusion block slidably connected to the top of the base 1, and the driving component 3 is a cylinder or a hydraulic cylinder. The driving component 3 is fixedly connected to the top of the base 1, and the shaft end of the driving component 3 is fixedly connected to the extrusion block. The extrusion block is used to extrude the battery. Specifically, the battery is connected to the testing equipment via wires. After the battery is subjected to pressure, the electronic equipment records data such as battery voltage, current, and temperature, and combines this with algorithms to predict battery life and diagnose potential faults. The specific operation method is existing technology and will not be elaborated here.

[0018] Furthermore, the clamping assembly 5 includes a clamping platform 51 and a clamping plate 52. An abutment portion 57 and a step portion 53 are respectively provided on both sides of the end face of the clamping platform 51. The clamping plate 52 is slidably connected to the step portion 53 through a guide rod 54 and a first compression spring 55.

[0019] Furthermore, an eccentric rod 56 is rotatably connected to the end face of the stepped portion 53, and a recessed portion 521 is provided on the side of the clamping plate 52. The eccentric rod 56 rotates eccentrically to drive the side of the eccentric rod 56 away from the axis point to stop in the recessed portion 521.

[0020] In this embodiment, the eccentric rod 56 is rotated so that the side of the eccentric rod 56 away from the axis is stopped in the recess 521. During the rotation of the protruding part of the eccentric rod 56, the clamping plate 52 will gradually move towards the battery side. After the eccentric rod 56 is completely fixed, the clamping plate 52 and the abutment part 57 clamp and fix the battery. Of course, the width of both the clamping plate 52 and the abutment part 57 is smaller than the width of the battery.

[0021] More specifically, the positioning structure 6 includes a protrusion 61, which is fixedly connected to the end face of the support plate 4. The protrusion 61 is axially connected to the support plate 4, and the end face of the protrusion 61 is provided with a plurality of positioning grooves 62.

[0022] In general, a connecting rod 63 is fixedly connected to the back of the clamping platform 51, and the connecting rod 63 is slidably connected to the protrusion 61. A snap-fit ​​part 64 is provided on the back of the clamping platform 51, and the snap-fit ​​part 64 is engaged in the positioning groove 62.

[0023] Finally, a second compression spring 65 is sleeved around the connecting rod 63, and a butterfly part 66 is threaded to the free end of the connecting rod 63. The two ends of the second compression spring 65 abut against the butterfly part 66 and the side wall of the support plate 4, respectively.

[0024] In this embodiment, the rotating butterfly part 66 adjusts the compression force of the second compression spring 65. When the compression force of the second compression spring 65 is large enough, the thrust applied by the rebound drives the clamp 51 to fit tightly with the protrusion 61. At this time, the snap-fit ​​part 64 is engaged in the positioning groove 62, which stabilizes the clamp 51 on the one hand and fixes the axial force angle of the battery on the other hand by limiting it.

[0025] In actual operation, the compression force of the second compression spring 65 can be released by reversing the butterfly part 66. At this time, it is easier to pull the clamp 51, drive the snap-fit ​​part 64 to separate from the positioning groove 62, and then adjust the axial angle of the battery by rotation.

[0026] Working method: During operation, the battery is placed between the abutment part 57 and the clamping plate 52. The eccentric rod 56 is rotated so that the side of the eccentric rod 56 away from the axis is stopped in the recessed part 521. During the rotation of the eccentric rod 56, the protruding part will gradually drive the clamping plate 52 to move towards the battery side. After the eccentric rod 56 is completely fixed, the clamping plate 52 cooperates with the abutment part 57 to clamp and fix the battery. When it is necessary to adjust the axial force angle of the battery, unlock the butterfly part 66 and pull the clamp 51 outward. After the locking part 64 separates from the positioning groove 62, the axial force angle of the battery can be adjusted by rotation. The clamp 51 is reset under the action of the second compression spring 65, and the butterfly part 66 needs to be reversed. By compressing the second compression spring 65, the clamp 51 and the protrusion 61 are tightly fitted together, and the snap-fit ​​part 64 is stably engaged with the positioning groove 62, so that the battery can be fixed. Finally, the drive unit 3 drives the extrusion mechanism 2 to move, and the extrusion block extrudes the battery for safety testing.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A battery safety testing device, mounted on a base (1), characterized in that: It includes a pressing mechanism (2) and a support mechanism arranged opposite to each other. The pressing mechanism (2) is slidably connected to the top of the base (1) via a drive member (3). The support mechanism includes a support plate (4) and a clamping assembly (5) for fixing the battery connected to the end face of the support plate (4). The clamping assembly (5) and the support plate (4) are further provided with a positioning structure (6), and the clamping assembly (5) adjusts the multi-axial pressure angle of the battery through the positioning structure (6). The clamping assembly (5) includes a clamping platform (51) and a clamping plate (52). An abutment part (57) and a step part (53) are respectively provided on both sides of the end face of the clamping platform (51). The clamping plate (52) is slidably connected to the step part (53) through a guide rod (54) and a first compression spring (55). An eccentric rod (56) is rotatably connected to the end face of the stepped portion (53), and a recess (521) is provided on the side of the clamping plate (52). The eccentric rod (56) rotates eccentrically to drive the side of the eccentric rod (56) away from the axis point to stop in the recess (521). The positioning structure (6) includes a protrusion (61), which is fixedly connected to the end face of the support plate (4). The protrusion (61) is axially connected to the support plate (4), and the end face of the protrusion (61) is provided with a plurality of positioning grooves (62) axially.

2. The battery safety testing device according to claim 1, characterized in that: A connecting rod (63) is fixedly connected to the back of the clamp (51). The connecting rod (63) is slidably connected to the axis of the protrusion (61). A snap-fit ​​part (64) is provided on the back of the clamp (51). The snap-fit ​​part (64) is engaged in the positioning groove (62).

3. The battery safety testing device according to claim 2, characterized in that: The connecting rod (63) is surrounded by a second compression spring (65), and the free end of the connecting rod (63) is threaded with a butterfly part (66). The two ends of the second compression spring (65) abut against the butterfly part (66) and the side wall of the support plate (4), respectively.

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