Box body and power electronic equipment
By designing a protective structure in the box of the power electronic equipment, the problem of explosion risks and safety hazards in the event of electrical failures is solved, and the shielding protection of the probe gap is achieved, which improves the safety performance of the equipment.
Patent Information
- Application Number
- CN202421144693.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-23
AI Technical Summary
There is a risk of explosion in existing power electronic equipment when an electrical failure occurs, resulting in the equipment housing structure that may explode, the internal devices are exposed and there is a risk of being probed by non-professional personnel or foreign objects, which poses a safety hazard.
Design a box, including a box body, a box cover and a protective structure. When the protective structure creates a probe gap between the box body and the box cover, it switches to the protective state, and both ends extend to both sides of the probe gap to separate the accommodating space and the outside world.
The additional protective structure shields and protects the probe gap between the box body and the box cover, reducing the risk of devices in the accommodating space being probed and improving the safety performance of the equipment.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic equipment, and more specifically to a box and a power electronic equipment. Background Art
[0002] Existing inverters and other power electronic devices that need to meet sealing conditions have internal components such as capacitors, switches, relays, modules, etc., which may be at risk of explosion when an electrical failure occurs in the equipment. The huge pressure generated by the explosion may cause the outer shell structure of the equipment to burst, exposing the internal components of the equipment to the outside. There is a risk that the internal components of the equipment may be touched by non-professionals or other foreign objects, which poses a certain safety hazard.
[0003] Therefore, how to reduce the risk of internal devices of the device being probed has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content
[0004] In view of this, an object of the present invention is to provide a box to reduce the risk of internal components of the device being probed.
[0005] Another object of the present invention is to provide a power electronic device comprising the above-mentioned box.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A box body, comprising:
[0008] Box body;
[0009] A box cover is arranged on the box body and forms a containing space with the box body;
[0010] A protection structure, configured with a protection state and a storage state, wherein the protection structure switches from the storage state to the protection state in response to a detection gap being generated between the box body and the box cover;
[0011] Among them, when there is no probing gap between the box body and the box cover, the protective structure is in the storage state, and when there is a probing gap between the box body and the box cover, the protective structure is in the protective state, and the two ends of the protective structure respectively extend to the two sides of the probing gap to separate the accommodating space from the outside world.
[0012] Optionally, in the above-mentioned box, the protective structure includes a connecting member, and the connecting member is connected to at least one of the box body and the box cover;
[0013] When the protection structure is in the storage state, the connecting member is folded or rolled up, and when the protection structure is in the protection state, the connecting member is unfolded and both ends extend to both sides of the detection gap respectively to protect the detection gap.
[0014] Optionally, in the above-mentioned box body, the first end of the connecting member is connected to the box cover, the second end of the connecting member is provided with a support frame, both ends of the support frame are connected to the box cover, and the support frame protrudes to a side away from the box cover.
[0015] Optionally, in the above-mentioned box body, the support frame includes a main body section, a guide section and a box cover connecting section, the guide sections are two and are respectively connected to the two ends of the guide section, and the guide section is inclined in the direction where the box cover is located, and the two box cover connecting sections are connected to the guide sections in a one-to-one correspondence and are connected to the box cover;
[0016] When the detection gap is formed between the box body and the box cover, the two box cover connecting sections approach each other, so that the main body section convexly deforms toward a side away from the box cover.
[0017] Optionally, in the above-mentioned box, the connecting piece is made of a flexible material or an elastic material; and / or,
[0018] The support frame is made of rigid material.
[0019] Optionally, in the above-mentioned box, the protective structure includes a telescopic bracket, and two ends of the telescopic bracket are respectively connected to the box body and the box cover;
[0020] The telescopic support comprises a plurality of first supporting rods which are parallel to each other and arranged at intervals, and a plurality of second supporting rods which are parallel to each other and arranged at intervals. The first supporting rods and the second supporting rods are cross-arranged and hinged.
[0021] When the protection structure is in the storage state, the telescopic bracket is folded, and when the protection structure is in the protection state, the telescopic bracket is unfolded and both ends extend to both sides of the detection gap respectively to protect the detection gap.
[0022] Optionally, in the above-mentioned box, the protective structure has a grid-like structure, and the size of each grid in the grid-like structure is smaller than a preset size.
[0023] Optionally, in the above-mentioned box, the protective structure includes a containing box and a containing cover, the containing box has a containing inner cavity for containing the expansion object, and the containing cover is connected to the containing box and is used to close the containing inner cavity;
[0024] When the protective structure is in the storage state, the accommodating box is connected to the accommodating cover, the accommodating inner cavity is closed, and the expansion object is accommodated in the accommodating inner cavity; when the protective structure is in the protective state, the accommodating box is separated from the accommodating cover, the accommodating inner cavity is opened, and the expansion object expands in the detection gap.
[0025] Optionally, in the above-mentioned box, the accommodating box is connected to one of the box body and the box cover, and the accommodating cover is connected to the other of the box body and the box cover; or,
[0026] The accommodating cover is movably arranged on the accommodating box, and its movement is controlled by a detection component, wherein the detection component is used to detect whether the detection gap exists between the box body and the box cover.
[0027] A power electronic device comprises the above-mentioned box and an electronic device, wherein the electronic device is arranged in the accommodating space.
[0028] The box provided by the utility model includes a box body, a box cover and a protective structure. The box cover is arranged on the box body and forms a storage space for accommodating electronic devices with the box body. The protective structure is used to protect at the detection gap when there is a detection gap between the box body and the box cover, so as to separate the electronic devices in the storage space from the outside. The box body and the box cover have a small safety gap when they are normally fastened. When the electronic devices in the storage space explode due to a fault and the box body is impacted, the box body and the box cover will be deformed, and the above-mentioned detection gap will be formed at the connection position between the two, so that the electronic devices in the storage space are at risk of being detected by foreign objects or organisms. By arranging the protective structure at the detection gap, the storage space and the outside world can be effectively separated, thereby improving the safety performance of the box.
[0029] Compared with the prior art, the box provided by the utility model shields and protects the possible probing gap between the box body and the box cover through an additional protective structure, which greatly reduces the risk of devices in the accommodating space being probed and improves the safety performance of the equipment.
[0030] The power electronic device disclosed in the utility model comprises the above-mentioned box body and electronic devices, and the electronic devices are arranged in the accommodating space, so the above-mentioned beneficial effects are also possessed. Other structures refer to the prior art and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0032] Figure 1 The structure of the first box disclosed in the embodiment of the utility model is schematically shown in FIG. Figure 1 ;
[0033] Figure 2 The structure of the first box disclosed in the embodiment of the utility model is schematically shown in FIG. Figure 2 ;
[0034] Figure 3 The structure of the first box disclosed in the embodiment of the utility model is schematically shown in FIG. Figure 3 ;
[0035] Figure 4 The structure of the first box disclosed in the embodiment of the utility model is schematically shown in FIG. Figure 4 ;
[0036] Figure 5 It is a partial structural schematic diagram of the connecting piece disclosed in the embodiment of the utility model;
[0037] Figure 6 A schematic diagram of the winding of the connecting member disclosed in the embodiment of the utility model;
[0038] Figure 7 A schematic diagram of the folding of the connecting member disclosed in the embodiment of the utility model;
[0039] Figure 8 The structure of the second box disclosed in the embodiment of the utility model is shown in FIG. Figure 1 ;
[0040] Fig. 9 for Figure 8 Installation diagram of the middle box cover, connectors and support frame;
[0041] Fig.10 The structure of the second box disclosed in the embodiment of the utility model is shown in FIG. Figure 2 ;
[0042] Fig.11 for Fig.10 Installation diagram of the middle box cover, connectors and support frame;
[0043] Fig.12 The structure of the third box disclosed in the embodiment of the utility model is shown in FIG. Figure 1 ;
[0044] Fig.13 The structure of the third box disclosed in the embodiment of the utility model is shown in FIG. Figure 2 .
[0045] Among them, 1 is the box cover, 2 is the connecting piece, 201 is the gap hole, 202 is the connecting body, 3 is the box body, 4 is the supporting frame, 401 is the box cover connecting section, 402 is the main body section, 403 is the deformation section, 404 is the guiding section, 5 is the accommodating container, 501 is the accommodating box, 502 is the accommodating inner cavity, 503 is the connecting column, 504 is the accommodating cover, and 505 is the expansion object. DETAILED DESCRIPTION
[0046] The core of the utility model is to disclose a box to reduce the risk of internal components of the equipment being probed.
[0047] Another core of the utility model is to disclose a power electronic device including the above-mentioned box.
[0048] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the contents of the utility model described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions of the utility model described in the claims. It should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. In the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.
[0049] Combination Figure 1-Figure 13 The box disclosed in the utility model includes a box body 3, a box cover 1 and a protective structure. The box cover 1 is arranged on the box body 3 and forms a storage space for accommodating electronic devices with the box body 3. The protective structure is arranged on the box body 3 and / or the box cover 1, and is configured with a protective state and a storage state. When a detection gap is generated between the box body 3 and the box cover 1, the protective structure switches from the storage state to the protective state; when there is no detection gap between the box body 3 and the box cover 1, the protective structure is in the storage state, and when there is a detection gap between the box body 3 and the box cover 1, the protective structure is in the protective state, and the two ends extend at least to the two sides of the detection gap respectively to form protection for the detection gap, thereby separating the electronic devices in the storage space from the outside world.
[0050] It is understandable that the box body 3 and the box cover 1 have a small safety gap (which can be 0) when they are normally fastened together. When the electronic device in the storage space explodes due to a fault and the box body is impacted, the box body 3 and the box cover 1 will be deformed, and the above-mentioned detection gap will be formed at the connection position between the two, so that the electronic device in the storage space is at risk of being detected by foreign objects or organisms. By setting the protective structure at the detection gap, the storage space and the outside world can be effectively separated, thereby improving the safety performance of the box. The two sides of the detection gap correspond to the two sides where the box body 3 and the box cover 1 are fastened to each other.
[0051] Compared with the prior art, the box disclosed in the present practical embodiment shields and protects the possible probing gap between the box body 3 and the box cover 1 through an additional protective structure, which greatly reduces the risk of devices in the accommodating space being probed and improves the safety performance of the equipment.
[0052] Combination Figure 1-Figure 4 The protective structure may include a connector 2, which is connected to at least one of the box body 3 and the box cover 1. It can be understood by those skilled in the art that the box body 3 and the box cover 1 have a conventional fastening connection structure such as bolt connection and clamping, and the setting of the connector 2 does not affect the normal connection between the box body 3 and the box cover 1. The connector 2 is kept in the storage state when the box body 3 and the box cover 1 are normally installed and used, that is, when the above-mentioned detection gap is not generated between the box body 3 and the box cover 1; when the box body 3 and the box cover 1 are impacted to generate the corresponding detection gap, the connector 2 can be triggered to unfold and switch to the protection state, thereby generating a protection function for the detection gap.
[0053] It can be understood that the probing gap should be understood as a gap that is easy for organisms or foreign objects to enter the accommodation space, that is, only when the gap between the box body 3 and the box cover 1 is larger than a preset value (the specific size can be adjusted according to actual conditions), the gap is at risk of being probed and needs to be protected by a protective structure. When the gap between the box body 3 and the box cover 1 is not larger than the preset value, the gap is not at risk of being probed and the protective structure does not need to be protected. For example, combined with Fig.10 When the box explodes, the middle position where the box cover 1 (the edges on both sides) is connected to the box body 3 is more likely to produce a larger deformation gap than the two side positions. The deformation gap is greater than the preset value, while the deformation gap produced at the two side positions is less than the preset value. In this case, the protective structure can only protect the middle position.
[0054] Furthermore, the box body is provided with an explosion-proof vent (the explosion-proof vent is used to provide a safe release channel when an explosion may be caused in certain enclosed spaces). When an explosion occurs, since the structural strength at the explosion-proof vent is a weak position on the box body, the explosion can be guided to be released at the explosion-proof vent and a detection gap is generated, so that the protective structure can be arranged correspondingly at the explosion-proof vent.
[0055] In one embodiment, one end of the connecting member 2 is connected to the box body 3, and the other end is connected to the box cover 1. When the box cover 1 and the box body 3 are deformed or displaced, the detection gap is generated accordingly. The two ends of the connecting member 2 can move with the box cover 1 and the box body 3 respectively, and unfold to form a protective layer adapted to the detection gap.
[0056] Specifically, in the above embodiment, the connecting member 2 can be made of flexible material or elastic material so as to be able to withstand a certain tensile force. The connecting member 2 specifically includes but is not limited to components (protective nets, etc.) that can present a porous shape after being stretched, so as to be able to adapt to various possible shapes of the detection gap.
[0057] Taking the protective net structure made of flexible or elastic material as an example, when there is no detection gap between the box body 3 and the box cover 1, the connection member 2 is combined with the protective net structure made of flexible or elastic material. Figure 6 and Figure 7 , the connector 2 can be stored in the form of winding (a) or folding (b) to reduce the space occupied; when an explosion occurs inside the box, the box body 3 and the box cover 1 are impacted and deformed or even separated to produce a detection gap, the connector 2 still remains connected to the box body 3 and the box cover 1, and the connector 2 is stretched and expanded by force. At this time, the detection gap produced between the box body 3 and the box cover 1 is blocked by the connector 2, making the internal device unable to be detected.
[0058] Combination Figure 1-Figure 4 The above-mentioned connecting member 2 can be connected to the inner wall or outer wall of the box body 3 and the box cover 1 respectively, that is, the connecting member 2 can be arranged inside or outside the accommodating space.
[0059] The connecting member 2 may also be connected to only one of the box cover 1 and the box body 3. Figure 3 and Figure 4 For example, when the box is in use, the top of the box body 3 is open, and the box cover 1 is set on the top of the box body 3, then the top end of the connecting member 2 can be connected to the box cover 1, and the bottom end of the connecting member 2 can hang freely or hang through the set counterweight block to achieve shielding of the detection gap.
[0060] Correspondingly, in order to facilitate the connection and fixation between the above-mentioned connecting member 2 and the box body 3 and the box cover 1, a first fixing member connected to the box body 3 is provided at the first end of the connecting member 2, and a second fixing member connected to the box cover 1 is provided at the second end of the connecting member 2.
[0061] Combination Figure 8-Figure 11 The first fixing member and the second fixing member can be configured as a long strip-shaped bracket structure so as to keep the end of the connecting member 2 in an unfolded state for convenient connection with the box body 3 and the box cover 1 .
[0062] Further optimization scheme, because the box body 3 and the box cover 1 are subjected to the internal explosion impact, the box cover 1 with a lighter mass and relatively lower structural strength is prone to produce the following Fig.10 The middle position of the box cover 1 is deformed to bulge toward the side away from the box body 3. Therefore, in order to make the shape of the connecting member 2 after unfolding adaptable thereto and ensure its protective effect on the detection gap, the first fixing member can be cancelled, and one end of the connecting member 2 is directly connected to the box cover 1 (the side close to the box body 3) to ensure that the connecting member 2 can deform with the deformation of the box cover 1.
[0063] The second fixing member (support frame 4) can be configured in a certain shape so that the support frame 4 has a deformation guide that bulges toward the side away from the box cover 1. When the box cover 1 bulges and deforms, the support frame 4 can bulge and deform toward the side away from the box cover 1, so that the shape of the connecting member 2 after unfolding can completely cover the detection gap. For example, the support frame 4 can be bent as a whole into an arc-shaped structure that bulges toward the side away from the box cover 1.
[0064] Combination Fig.10 and Fig.11 In one embodiment, the support frame 4 includes a box cover connecting section 401, a guide section 404 and a main section 402. There are two box cover connecting sections 401 and two guide sections 404, which are symmetrically arranged at both ends of the main section 402. The guide section 404 is connected between the box cover connecting section 401 and the main section 402, and is inclined in the direction where the box cover 1 is located. The box cover connecting section 401 is used to connect with the box cover 1. The setting of the guide section 404 makes the cross-section of the support frame 4 as a whole present a groove shape with an opening toward the box cover 1. When the box cover 1 bulges and deforms and the above-mentioned contact gap is generated between the box cover body 3, the deformation of the box cover 1 can pull and drive the two box cover connecting sections 401 to approach each other. Guided by the guide section 404, the main section 402 can bulge and deform to the side away from the box cover 1 (the middle position of the main section 402 is the deformation section 403, and the deformation section 403 is usually opposite to the bulging deformation position of the box cover 1).
[0065] The support frame 4 may be an integrated structure made of a rigid material. The above-mentioned protective structure occupies less space when not deployed, and can be applied to equipment with relatively limited space resources.
[0066] In one embodiment disclosed in the utility model, the connecting member 2 includes a telescopic bracket made of a rigid material, and the two ends of the telescopic bracket are respectively connected to the box body 3 and the box cover 1. Specifically, the telescopic bracket includes a plurality of first support rods that are parallel to each other and arranged at intervals, and a plurality of second support rods that are parallel to each other and arranged at intervals. One side surface of the first support rod is overlapped with the second support rod, and a hinge hole is provided at the overlap of the first support rod and the second support rod, so as to be hingedly connected by hinges such as rivets to form a diamond grid-shaped protective structure. When the protective structure is in the storage state, the telescopic bracket is folded, and when the protective structure is in the protective state, the telescopic bracket is unfolded and the two ends are respectively extended to the two sides of the detection gap to protect the detection gap. The telescopic bracket can move with the box cover 1 and the box body 3 and be deformed by tension and compression, thereby realizing the shielding of the detection gap.
[0067] Since the telescopic bracket is made of rigid material, in order to avoid the telescopic bracket from getting stuck due to irregular deformation of the box body 3 and the box cover 1, the ends of the telescopic bracket are connected to the box body 3 and the box cover 1 through connecting parts made of flexible material to adapt to the deformation of the box body 3 and the box cover 1. For example, the connecting parts can be connecting ropes or hinges.
[0068] It is understandable that the above-mentioned connecting member 2 and telescopic bracket can be used in combination. The connecting member 2 can be one layer or multiple layers, and the telescopic bracket can be multiple groups arranged at intervals.
[0069] Combination Figure 5 When the above-mentioned connector 2 or telescopic bracket has a grid structure, it is necessary to control the size of each grid to be smaller than the preset size to avoid the situation where foreign objects or organisms are detected through the grid due to the grid being too large, that is, the size of the gap hole 201 formed on the connecting body 202 of the connector 2 needs to be kept within the preset numerical range, and the size of the diamond grid of the telescopic bracket needs to be kept within the preset numerical range. When huge pressure is generated inside the device, the box cover 1 and the box body 3 are forced to deform to produce a detection gap. At this time, the gap hole 201 generated by the pulling of the connecting body 202 of the connector 2 and / or the diamond grid formed by the expansion of the telescopic bracket meet the requirement that the internal devices of the device cannot be detected through the gap hole 201 or the diamond grid. The shape of the gap hole 201 can be circular, polygonal or other irregular shapes.
[0070] When the box body 3 and the box cover 1 are deformed by impact, the protective structure in the above embodiment can also play a certain role in alleviating the impact and effectively prevent the box cover 1 from falling off directly relative to the box body 3.
[0071] In one embodiment disclosed in the present utility model, combined with Fig.12 and Fig.13 The protective structure includes a plurality of accommodating containers 5, which include a accommodating box 501 and an accommodating cover 504. The accommodating box 501 has an accommodating inner cavity 502 for accommodating an expansion object 505. The accommodating cover 504 is connected to the accommodating box 501 and is used to seal the accommodating inner cavity 502. The expansion object 505 has the property of being able to expand in all directions without being subjected to external pressure. The expansion object 505 can be specifically a foaming material, a compressed sponge, etc. When there is no pressure or other external property conditions, the shape and density of the expansion object 505 will change, thereby filling the detection gap and achieving the purpose of anti-detection.
[0072] When the protective structure is in the storage state, the accommodating box 501 is connected to the accommodating cover 504, the accommodating inner cavity 502 is closed, and the expansion object 505 is accommodated in the accommodating inner cavity 502. When the protective structure is in the protective state, there is a probing gap between the box body 3 and the box cover 1, the accommodating box 501 is separated from the accommodating cover 504, and the accommodating inner cavity 502 is opened accordingly, and the expansion object 505 expands on both sides of the probing gap, thereby realizing the isolation of the accommodating space from the outside world.
[0073] Specifically, the receiving box 501 is connected to one of the box body 3 and the box cover 1, and the receiving cover 504 is connected to the other of the box body 3 and the box cover 1. Fig.13 In one embodiment, the accommodating box 501 is mounted and fixed on the box body 3, the accommodating cover 504 is connected to the box cover 1 through the connecting column 503, and the accommodating inner cavity 502 is filled with the expansion material 505. Under normal conditions, the accommodating box 501 and the accommodating cover 504 are tightly connected, and the expansion material 505 cannot escape at this time; when huge pressure is generated inside the device, the box cover 1 and the box body 3 are deformed and a detection gap is generated. Since the connecting column 503 is connected to the box cover 1, the accommodating box 501 and the accommodating cover 504 are separated and lose the closing ability. At this time, the expansion material 505 in the accommodating inner cavity 502 will escape to the outside of the accommodating inner cavity 502, and the rapid expansion of the expansion material 505 can block the detection gap, preventing the internal parts of the device from being detected.
[0074] In the above embodiment, the expansion of the expansion object 505 is automatically released through the mechanical connection between the accommodating box 501 and the accommodating cover 504 and the box body 3 and the box cover 1 respectively. In addition, the release of the expansion object 505 can be controlled by setting a detection component that can detect whether there is a detection gap between the box body 3 and the box cover 1. For example, when the detection component detects the existence of the detection gap, the automatic opening of the accommodating cover 504 is controlled to achieve the release of the expansion object 505.
[0075] Among them, the detection component can be specifically a functional component arranged outside the box body 3, and is used to set a detection distance between the box body 3 and the box cover 1 / whether the box cover 1 is deformed / whether an impact is generated inside the box body 3, etc. When the detection component detects a situation corresponding to the existence of a detection gap, the detection component controls the accommodating cover 504 to open automatically. At this time, the protective structure can be arranged on the box body 3 as a whole, and the accommodating cover 504 does not need to be connected to the box cover 1.
[0076] The accommodating cover 504 can be arranged on the accommodating box 501 by means of a hinged flip cover, etc., so as to be opened automatically under the control of the detection component.
[0077] The power electronic device disclosed in the embodiment of the utility model comprises the above-mentioned box body and electronic devices, and the electronic devices are arranged in the accommodating space, so it also has the above-mentioned beneficial effects. Other structures refer to the prior art and are not described here in detail.
[0078] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the utility model. Various modifications to these embodiments will be obvious to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. The specific technical means in some embodiments can be combined in part or in whole into another embodiment without being explicitly excluded by another embodiment. Therefore, the utility model will not be limited to the embodiments shown in this article, but will conform to the widest range consistent with the principles and novel features disclosed herein.
Claims
1. A box, characterized in that: include: Box body (3); A box cover (1) is arranged on the box body (3) and forms a storage space with the box body (3); The protective structure is configured with a protective state and a storage state, and in response to a detection gap being generated between the box body (3) and the box cover (1), the protective structure switches from the storage state to the protective state; When the detection gap is not present between the box body (3) and the box cover (1), the protective structure is in the storage state; when the detection gap is present between the box body (3) and the box cover (1), the protective structure is in the protection state, and both ends of the protective structure extend to both sides of the detection gap respectively to separate the accommodating space from the outside.
2. The box body according to claim 1, characterized in that: The protective structure comprises a connecting member (2), wherein the connecting member (2) is connected to at least one of the box body (3) and the box cover (1); When the protective structure is in the stored state, the connecting piece (2) is folded or rolled up, and when the protective structure is in the protective state, the connecting piece (2) is unfolded and both ends extend to both sides of the detection gap respectively, so as to protect the detection gap.
3. The box body according to claim 2, characterized in that: The first end of the connecting member (2) is connected to the box cover (1), and the second end is provided with a support frame (4), both ends of the support frame (4) are connected to the box cover (1), and the support frame (4) protrudes to a side away from the box cover (1).
4. The box body according to claim 3, characterized in that: The support frame (4) comprises a main body section (402), a guide section (404) and a box cover connecting section (401); the guide sections (404) are two and are respectively connected to two ends of the guide section (404); the guide sections (404) are inclined in the direction where the box cover (1) is located; the two box cover connecting sections (401) are connected to the guide sections (404) in a one-to-one correspondence and are connected to the box cover (1); When the detection gap is present between the box body (3) and the box cover (1), the two box cover connecting sections (401) approach each other, so that the main body section (402) is deformed to bulge toward a side away from the box cover (1).
5. The box body according to claim 4, characterized in that: The connecting piece (2) is made of a flexible material or an elastic material; and / or, The support frame (4) is made of rigid material.
6. The box body according to claim 1, characterized in that: The protective structure comprises a telescopic bracket, and two ends of the telescopic bracket are respectively connected to the box body (3) and the box cover (1); The telescopic support comprises a plurality of first supporting rods which are parallel to each other and arranged at intervals, and a plurality of second supporting rods which are parallel to each other and arranged at intervals, wherein the first supporting rods and the second supporting rods are cross-arranged and hinged; When the protection structure is in the storage state, the telescopic bracket is folded, and when the protection structure is in the protection state, the telescopic bracket is unfolded and both ends extend to both sides of the detection gap respectively to protect the detection gap.
7. The box according to any one of claims 1 to 6, characterized in that: The protective structure has a grid-like structure, and the size of each grid in the grid-like structure is smaller than a preset size.
8. The box body according to claim 1, characterized in that: The protective structure comprises a containing box (501) and a containing cover (504); the containing box (501) has a containing inner cavity (502) for containing an expansion object (505); When the protective structure is in the storage state, the accommodating box (501) is connected to the accommodating cover (504), the accommodating inner cavity (502) is closed, and the expansion object (505) is accommodated in the accommodating inner cavity (502); when the protective structure is in the protective state, the accommodating box (501) is separated from the accommodating cover (504), the accommodating inner cavity (502) is opened, and the expansion object (505) expands to both sides of the detection gap.
9. The box body according to claim 8, characterized in that: The accommodating box (501) is connected to one of the box body (3) and the box cover (1), and the accommodating cover (504) is connected to the other of the box body (3) and the box cover (1); or, The accommodating cover (504) is movably arranged on the accommodating box (501), and its movement is controlled by a detection component, wherein the detection component is used to detect whether the detection gap exists between the box body (3) and the box cover (1).
10. A power electronic device, characterized in that: It comprises a box body and an electronic device as described in any one of claims 1 to 9, wherein the electronic device is arranged in the accommodating space.