An insulating terminal box for new energy battery detection

Abstract

This utility model discloses an insulating junction box for testing new energy batteries, relating to the field of junction box technology. It includes a detachably connected box body and a cover. A lead-in hole is provided on the side of the box body. A buffer assembly is installed inside the box body near the lead-in hole. The buffer assembly includes a limiting plate and a buffer spring. The buffer spring is vertically fixed between the limiting plate and the inner bottom of the box body. The limiting plate is located inside the cover when the buffer spring is not subjected to external force. Through the cooperation of the limiting plate and the buffer spring, this utility model allows a certain length of cable to be reserved inside the box during installation. When accidentally subjected to pulling force, the limiting plate and buffer spring can provide a certain buffering effect on the cable, preventing damage. Furthermore, after the pulling force disappears, the excess cable can be retracted into the box body under the action of the limiting plate and buffer spring, thus keeping the cable neat and tidy.

Description

Technical Field

[0001] This utility model relates to the field of junction box technology, and in particular to an insulated junction box for testing new energy batteries. Background Technology

[0002] The main function of using insulated junction boxes in power battery systems is to ensure the insulation performance between the high-voltage system and the vehicle body ground, prevent leakage risks, and ensure personnel safety. Some insulated junction boxes have built-in insulation monitoring circuits that detect the insulation resistance of the positive and negative terminals to ground in real time. When the resistance value is lower than a set threshold (such as 5-8kΩ), an alarm or trip protection is triggered to avoid safety accidents caused by grounding faults.

[0003] A search revealed, for example, a solar cell module junction box provided by patent publication number CN222215683U, includes a box body. A terminal block is fixedly installed inside the box body, and the terminal block has terminals. A fixing mechanism is provided on the front of the box body, and a positioning mechanism is provided inside the box body to facilitate fixing the terminals. The positioning mechanism includes a U-shaped movable plate, a clamping block, a fixing block, a fixing bolt, and a threaded sleeve. The U-shaped movable plate is rotatably installed inside the box body and outside the terminal block. This solar cell module junction box, through its positioning mechanism, can firmly fix the terminals to the terminals during use without welding, thus achieving the purpose of facilitating the fixing of the terminals.

[0004] Based on the above search and analysis of existing technologies, it has been found that most existing insulated junction boxes similar to those disclosed above lack an effective buffer structure between the junction box and the cable, making the external cable easily damaged when subjected to unexpected pulling forces. Therefore, an insulated junction box for testing new energy batteries is proposed to address these issues. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an insulating junction box for testing new energy batteries, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an insulating junction box for testing new energy batteries, comprising a detachably connected box body and a box cover, a lead wire hole provided on the side of the box body, and a buffer component installed on the inner side of the box body near the lead wire hole; The buffer assembly includes a limiting plate and a buffer spring, with the buffer spring vertically fixed between the limiting plate and the inner bottom of the box. The limiting plate is located inside the lid when the buffer spring is not subjected to external force.

[0007] As a further supplement to this solution, the buffer assembly also includes a guide post, which is vertically fixed to the inner bottom of the box, and the upper end of the guide post slides through the limiting plate.

[0008] As a further supplement to this solution, the limiting plate is wavy, and the troughs of the limiting plate are used to place cables.

[0009] As a further supplement to this solution, multiple guide posts are provided, and all guide posts are vertically fixed to the inner bottom of the box, and the upper ends of the guide posts slide through the crests of the limiting plate.

[0010] As a further supplement to this solution, a threaded post is provided on the surface of a guide post located in the middle of the limiting plate, and a threaded sleeve is threaded onto the outer side of the threaded post, with the threaded sleeve located at the upper end of the limiting plate.

[0011] As a further supplement to this solution, a wire tube is fixed to the outside of the lead hole, and an elastic sealing plate is connected to the inside of the wire tube.

[0012] As a further supplement to this solution, the lead hole is located between the box body and the box cover, and forms a symmetrical semi-circular hole on the box body and the box cover. The wire conduit includes two symmetrically arranged wire half-tubes, which are respectively fixed to the outside of the semi-circular hole of the box body and the box cover. The elastic sealing sheet is in the shape of two semi-rings and is symmetrically fixed to the inner wall of the two wire half tubes.

[0013] As a further supplement to this solution, multiple elastic sealing plates are provided, and the multiple elastic sealing plates are axially and equidistantly fixed on the inner wall of the wire half tube.

[0014] In summary, the technical effects and advantages of this utility model are as follows: 1. In this utility model, by using the combination of a limiting plate and a buffer spring, a certain length of cable is reserved inside the box during installation. When an unexpected pulling force is encountered, the limiting plate and the buffer spring can provide a certain buffering effect on the cable, making it less likely to be damaged. After the pulling force disappears, the excess cable can be retracted into the box under the action of the limiting plate and the buffer spring, thereby keeping the cable neat.

[0015] 2. In this utility model, by setting the limiting plate to a wave shape and setting multiple guide posts, and all the guide posts are vertically fixed to the inner bottom of the box, and the upper ends of the guide posts slide through the crest of the limiting plate, the multiple guide posts can position the cable and prevent adjacent cables from crossing.

[0016] 3. In this utility model, a threaded post is provided on the surface of a guide post located in the middle of the limiting plate. A threaded sleeve is threaded on the outer side of the threaded post. The threaded sleeve is located at the upper end of the limiting plate. When wiring, the threaded sleeve can be turned to press the limiting plate close to the inner bottom of the box. At this time, the cable is in a slack state, which facilitates the wiring operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure in this embodiment; Figure 2 This is a schematic diagram of the split structure in this embodiment; Figure 3 This is a cross-sectional view of the box body in this embodiment; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the cross-sectional structure in this embodiment; In the diagram: 1. Box body; 2. Box cover; 3. Conduit; 31. Conduit half tube; 4. Limiting plate; 5. Buffer spring; 6. Guide post; 7. Threaded post; 8. Threaded sleeve; 9. Elastic sealing sheet; 10. Wiring device; 11. Cable. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example: Reference Figure 1-5 The insulating junction box shown includes a detachably connected box body 1 and a box cover 2. A lead wire hole is provided on the side of the box body 1, and a buffer component is installed on the inner side of the box body 1 near the lead wire hole.

[0019] The buffer assembly includes a limiting plate 4 and a buffer spring 5. The buffer spring 5 is vertically fixed between the limiting plate 4 and the inner bottom end of the box body 1. The limiting plate 4 is located inside the box cover 2 when the buffer spring 5 is not subjected to external force. Figure 5 As shown, the cable 11 corresponding to the conventional wiring device 10 is pre-reserved for a certain length inside the box 1 during installation. When it is accidentally pulled, the limiting plate 4 and the buffer spring 5 can play a certain buffering role on the cable 11, so that the cable 11 is not easily damaged. After the pulling force disappears, the excess cable 11 can be retracted into the box 1 under the action of the limiting plate 4 and the buffer spring 5, thereby keeping the cable 11 neat.

[0020] The buffer assembly also includes a guide post 6, which is vertically fixed to the inner bottom of the box 1. The upper end of the guide post 6 slides through the limiting plate 4. The guide post 6 allows the buffer spring 5 to deform along its own working direction.

[0021] The limiting plate 4 is wavy, and the trough of the limiting plate 4 is used to place the cable 11. In addition, there are multiple guide posts 6, and all the guide posts 6 are vertically fixed to the bottom of the box 1. The upper ends of the guide posts 6 slide through the crest of the limiting plate 4. The multiple guide posts 6 can position the cable 11 and prevent adjacent cables from crossing.

[0022] To facilitate wiring operations, a threaded post 7 is provided on the surface of a guide post 6 located in the middle of the limiting plate 4. A threaded sleeve 8 is threaded onto the outer side of the threaded post 7. The threaded sleeve 8 is located at the upper end of the limiting plate 4. When wiring, the threaded sleeve 8 can be screwed down to press the limiting plate 4 close to the inner bottom end of the box 1. At this time, the cable 11 is in a slack state, which facilitates wiring operations.

[0023] The lead hole is fixed to the outside of the lead tube 3, and the inner side of the lead tube 3 is connected to the elastic sealing sheet 9. Specifically, the lead hole is located between the box body 1 and the box cover 2, and forms a symmetrical semi-circular hole on the box body 1 and the box cover 2. The lead tube 3 includes two symmetrically arranged lead tubes 31. The two lead tubes 31 are fixed to the outside of the semi-circular holes of the box body 1 and the box cover 2, respectively. The elastic sealing sheet 9 is in the shape of two semi-rings and is symmetrically fixed to the inner wall of the two lead tubes 31. There are multiple elastic sealing sheets 9, and the multiple elastic sealing sheets 9 are axially equidistantly fixed to the inner wall of the lead tubes 31.

[0024] The semi-circular hole facilitates the disassembly and replacement of the cable 11, and the multiple elastic sealing plates 9 can better ensure the sealing of the box 1.

[0025] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. An insulating junction box for testing new energy batteries, comprising a detachably connected box body and a box cover, characterized in that, A lead wire hole is provided on the side of the box body, and a buffer component is installed on the inner side of the box body near the lead wire hole; The buffer assembly includes a limiting plate and a buffer spring, wherein the buffer spring is vertically fixed between the limiting plate and the inner bottom end of the box body; The limiting plate is located inside the lid when the buffer spring is not subjected to external force.

2. An insulating junction box for testing new energy batteries according to claim 1, characterized in that: The buffer assembly also includes a guide post, which is vertically fixed to the inner bottom of the box, and the upper end of the guide post slides through the limiting plate.

3. An insulating junction box for testing new energy batteries according to claim 2, characterized in that: The limiting plate is wavy, and the troughs of the limiting plate are used to place cables.

4. An insulating junction box for testing new energy batteries according to claim 3, characterized in that: The guide posts are provided in multiple ways, and all guide posts are vertically fixed to the inner bottom of the box, and the upper ends of the guide posts slide through the crests of the limiting plate.

5. An insulating junction box for testing new energy batteries according to claim 4, characterized in that: A threaded post is provided on the surface of a guide post located in the middle of the limiting plate, and a threaded sleeve is threaded onto the outer side of the threaded post, with the threaded sleeve located at the upper end of the limiting plate.

6. An insulating junction box for testing new energy batteries according to claim 1, characterized in that: A wire tube is fixed to the outside of the lead hole, and an elastic sealing sheet is connected to the inside of the wire tube.

7. An insulating junction box for testing new energy batteries according to claim 6, characterized in that: The lead hole is located between the box body and the box cover, and forms a symmetrical semi-circular hole on the box body and the box cover. The wire conduit includes two symmetrically arranged wire half-tubes, and the two wire half-tubes are respectively fixed to the outside of the semi-circular hole of the box body and the box cover. The elastic sealing sheet is in the form of two semi-rings and is symmetrically fixed to the inner wall of the two wire half tubes.

8. An insulating junction box for testing new energy batteries according to claim 7, characterized in that: Multiple elastic sealing sheets are provided, and the multiple elastic sealing sheets are axially and equidistantly fixed on the inner wall of the wire half tube.

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