Light storage charging and discharging detection device

Abstract

The utility model discloses a light storage charging and discharging detection device, a detection plug is arranged on a fixing plate, the fixing plate is arranged on the inner wall of a shell of a detector, the detection plug is connected with a detection socket in an inserted mode to achieve energy storage detection of a light energy storage box, and after the detection plug is separated from the detection socket, the light energy storage box is connected with the detection socket in an inserted mode. The detection plug and the detection socket are respectively provided with a sealing cover, each sealing cover comprises a cover body, the inner wall of each cover body is provided with an open slot, the open slots are matched and plugged with the end surfaces of the shell body walls of the detection plug and the detection socket, the inner wall of each cover body is provided with a spring piece, and the spring pieces are arranged on the inner walls of the cover bodies. And the spring piece can be in elastic pressure contact with the inner walls of the detection plug and the detection socket. According to the utility model, the sealing cover is arranged to seal the detection plug and the detection socket, so that dust and moisture are effectively prevented from entering the detection plug and the detection socket when detection is not carried out, and the detection accuracy and consistency are improved.

Description

Technical Field

[0001] This utility model relates to a detection technology for photovoltaic energy storage devices, and in particular to a photovoltaic energy storage charge and discharge detection device. Background Technology

[0002] As a clean energy source, photovoltaic (PV) power generation is increasingly being distributed and applied in various corners of cities, such as PV rooftops, PV parking awnings, and PV buildings, bringing huge application prospects to the PV market. PV, as a distributed generation system, can better realize its value when combined with electric vehicle charging. Currently, most PV power generation systems use combiner boxes and inverters or inverters to achieve grid connection, and then electric vehicles draw power from the grid for charging. However, this does not necessarily guarantee that PV power generation can directly charge and consume electric vehicles on-site. Moreover, the energy utilization efficiency is greatly reduced because PV power generation undergoes two DC / AC conversions before electric vehicle charging. To ensure the normal operation of the PV-storage-charging system, a PV-storage microgrid charging and discharging test platform is needed.

[0003] CN208334476U discloses an energy testing device for an integrated photovoltaic-storage-charging system. The device has a set of fixed side wings on each side of the housing, with a set of mounting through holes and a set of fixing bolts inside. A set of movable slots is machined on the upper end of the housing, and a set of testing plugs is installed inside. The upper end of each testing plug is fixedly connected to a set of push-pull handles, which are located within the movable slots. The testing plugs are connected to a set of testing devices via wires and mate with a set of testing sockets located at the output end of the photovoltaic-storage-charging system. This invention, by providing a socket at the output end of the photovoltaic-storage-charging system, allows the testing plug to be inserted into the testing socket, transferring the energy output from the system to the testing device. The testing device then displays the energy as current for easy reference.

[0004] However, the aforementioned patented technology has the following shortcomings: 1. The test plug is connected to a push-pull handle, which is used to insert and remove the test plug. The push-pull handle has a small force point, making insertion difficult. In addition, the push-pull structure increases the complexity of the structure, and repeated pushing and pulling of the test plug can cause the connecting wire to come loose, affecting the test results. 2. The test plug and test socket are always in the open state. When the device is not in use and is left unused for a long time, dust or small debris can enter the test socket, making it difficult for the plug to be inserted smoothly. This can easily damage the plug or socket and affect the test results. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of existing calibration technology and provide a photoelectric storage charge and discharge detection device with reasonable design, good protection effect and long service life.

[0006] The technical solution of this utility model is:

[0007] A photovoltaic energy storage charging and discharging detection device includes an ammeter, a detector, connecting bolts, a detection connection plate, and a detection plug. The detector contains a control circuit. The detection plug is mounted on a fixed plate, which is located on a stepped surface of the inner wall of the detector's housing. The connecting wire of the detection plug passes through the fixed plate and connects to the control circuit. The detection plug is inserted into a detection socket to detect the energy storage of the photovoltaic energy storage box. After the detection plug is detached from the detection socket, a sealing cover is provided on both the detection plug and the detection socket to prevent dust and moisture. The sealing cover includes a cover body, and an opening groove is provided on the inner wall of the cover body. The opening groove mates with the end face of the housing wall of the detection plug and the detection socket, allowing them to be inserted together. A spring sheet is provided on the inner wall of the cover body, allowing for elastic pressure contact with the inner wall of the housing of the detection plug and the detection socket.

[0008] Furthermore, a sealing gasket is provided at the contact point between the bottom of the opening groove and the end face of the housing wall of the detection plug and the detection socket.

[0009] Furthermore, a cover connecting plate is provided on the outer wall of the cover of the sealing cover, and the cover connecting plate can be connected to the detection connecting plate on the detection plug and the socket connecting plate on the detection socket respectively by connecting bolts.

[0010] Furthermore, one end of the spring sheet is connected to the inner wall of the housing, and the other end of the spring sheet has an arc-shaped structure or a zigzag structure, which can make elastic pressure contact with the inner wall of the housing of the detection plug and the detection socket.

[0011] Furthermore, the photovoltaic energy storage box is connected to multiple photovoltaic modules through a combiner box, so that the current from multiple photovoltaic panels is concentrated together and then connected to the MPPT controller of the inverter through fewer cables.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model is equipped with a sealing cover, which can seal the detection plug and the detection socket, effectively preventing dust and moisture from entering the detection plug and the detection socket when not in use, thereby improving the accuracy and consistency of the detection.

[0014] 2. This utility model features a fixed detection plug with a large force point, making it easy to insert the detection plug into the detection socket. It also simplifies the structure, reduces costs, and extends service life.

[0015] 3. The sealing cover of this utility model can be connected to the detection plug or detection socket by the clamping force of the spring sheet, or it can be connected to the detection plug or detection socket by the connecting plate and connecting bolts to achieve a dual connection and effectively prevent it from falling off.

[0016] 4. The sealing groove of the sealing cover of this utility model is in contact with the end face of the housing of the detection plug or detection socket, and a sealing gasket is provided on the contact surface to further improve the sealing effect.

[0017] 5. This utility model has a reasonable design, good protective effect and long service life, is easy to promote and implement, and has good economic benefits. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a photovoltaic energy storage charge-discharge detection device;

[0019] Figure 2 for Figure 1 Enlarged view of the connection between the plug and the sealing cover;

[0020] Figure 3 for Figure 1 Enlarged view of the connection between the socket and the sealing cover. Detailed Implementation

[0021] Example 1: See Figure 1 -- Figure 3 In the diagram, 1-current display meter, 2-detector, 3-connecting bolt, 4-detection connection plate, 5-detection plug, 6-socket connection plate, 7-detection socket, 8-photovoltaic energy storage box, 9-combiner box, 10-photovoltaic module, 11-fixing plate, 12-cover connection plate, 13-sealing cover, 14-spring sheet, 15-sealing gasket.

[0022] A photoelectric energy storage charging and discharging detection device includes a current display meter 1, a detector 2, connecting bolts 3, a detection connection plate 4, and a detection plug 5. The detector 2 contains a control circuit. The detection plug 5 is mounted on a fixed plate 11, which is located on a stepped surface of the inner wall of the detector 2's housing (it can be connected by screws, allowing for disassembly and assembly; additional support pillars can be provided in the middle of the fixed plate 11 to increase its support strength; the number of auxiliary pillars depends on the actual situation and is not listed here). The connecting wire of the detection plug 5 passes through the fixed plate 11 and connects to the control circuit. The sockets 7 are plugged in together. The detection socket 7 is located at the system output end of the photovoltaic energy storage box 8 to realize the energy storage detection of the photovoltaic energy storage box 8. After the detection plug 5 is detached from the detection socket 7, a sealing cover 13 is provided on the detection plug 5 and the detection socket 7 respectively to prevent dust and moisture. The sealing cover 13 includes a cover body, and an opening groove is provided on the inner wall of the cover body. The opening groove mates with the end face of the housing wall of the detection plug 5 and the detection socket 7, so that they are plugged in together. A spring sheet 14 is provided on the inner wall of the cover body. The spring sheet 14 can make elastic pressure contact with the inner wall of the housing of the detection plug 5 and the detection socket 7, so that the two are clamped together and prevented from falling off. Both the detection plug 5 and the detection socket 7 are square structures. Correspondingly, the sealing cover 13 is also a square structure, and the two match for easy plugging.

[0023] Preferred solution: A sealing gasket 15 is provided at the contact point between the bottom of the opening groove and the end face of the housing wall of the detection plug 5 and the detection socket 7. The sealing gasket 15 has a square structure and can be set at the bottom of the opening groove. The cross-section of the sealing gasket 15 is square.

[0024] Preferred solution: A cover connecting plate 12 is provided on the outer wall of the cover 13. The cover connecting plate 12 can be connected to the detection connecting plate 4 on the detection plug 5 and the socket connecting plate 6 on the detection socket 7 respectively by connecting bolts.

[0025] Preferred solution: One end of the spring sheet 14 is connected to the inner wall of the housing, and the other end of the spring sheet is an arc-shaped structure or a zigzag structure (the figure shows a zigzag structure, forming a triangular structure. The apex of the triangular structure is in close contact with the inner wall of the housing, which also facilitates the insertion and removal between the housing and the housing), and can make elastic pressure contact with the inner wall of the housing of the detection plug 5 and the detection socket 7.

[0026] Preferred solution: The photovoltaic energy storage box 8 is connected to multiple photovoltaic modules 10 through the combiner box 9 (three photovoltaic modules 10 are shown in the figure, which is just an illustration. The specific number depends on the actual needs and will not be described in detail). After the current of multiple photovoltaic panels is concentrated together, it is then connected to the MPPT controller of the inverter through a smaller number of cables.

[0027] During testing, the test plug 5 is plugged into the test socket 7 and connected together with connecting bolts and connecting plates to ensure a secure connection. The energy from the charging and discharging of the photovoltaic energy storage box 8 is transmitted to the control circuit through the test socket 7 and the test socket 5, and then the energy is displayed in the form of current for easy reference.

[0028] After the test is completed, remove the connecting bolts and pull the test plug 5 out of the test socket 7. At this time, both the test plug 5 and the test socket 7 are exposed to the air, which will allow dust and moisture to enter.

[0029] The covers of the two sealing covers 13 are respectively inserted into the housings of the detection plug 5 and the detection socket 7. A sealing gasket 15 is placed in the opening groove. Due to the clamping force of the spring sheet 14, the covers of the two sealing covers 13 are respectively connected to the housings of the detection plug 5 and the detection socket 7 to form a seal.

[0030] To improve the strength of the connection, a secondary connection can be achieved by connecting bolts to the detection connection plate 4, the socket connection plate 6, and the cover connection plate 12.

[0031] Example 2: This example is basically the same as Example 1, and the similarities will not be repeated. The difference is that: a spring clip is provided on the cover connecting plate. This spring clip is fixedly connected to the holes on the detection connecting plate 4 and the socket connecting plate 6, respectively, eliminating the need for connecting bolts. The spring clip makes a tight and elastic contact with the hole, allowing for quick insertion and removal, which is very convenient.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications made based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A photovoltaic energy storage charging and discharging detection device, comprising an ammeter, a detector, connecting bolts, a detection connection plate, and a detection plug, wherein the detector is provided with a control circuit, characterized in that: The detection plug is mounted on a fixed plate, which is located on the stepped surface of the inner wall of the detector housing. The connecting wire of the detection plug passes through the fixed plate and connects to the control circuit. The detection plug is inserted into the detection socket to realize the energy storage detection of the optical energy storage box. After the detection plug is detached from the detection socket, a sealing cover is provided on the detection plug and the detection socket respectively to prevent dust and moisture. The sealing cover includes a cover body, and an opening groove is provided on the inner wall of the cover body. The opening groove mates with the end face of the housing wall of the detection plug and the detection socket, and they are inserted together. A spring sheet is provided on the inner wall of the cover body, which can make elastic pressure contact with the inner wall of the housing of the detection plug and the detection socket.

2. The photovoltaic energy storage charge-discharge detection device according to claim 1, characterized in that: A sealing gasket is provided at the contact point between the bottom of the opening groove and the end face of the housing wall of the detection plug and detection socket.

3. The photovoltaic energy storage charge-discharge detection device according to claim 1, characterized in that: The outer wall of the sealing cover is provided with a cover connecting plate, which can be connected to the detection connecting plate on the detection plug and the socket connecting plate on the detection socket respectively by connecting bolts.

4. The photoelectric energy storage charge-discharge detection device according to claim 1, characterized in that: One end of the spring sheet is connected to the inner wall of the housing, and the other end of the spring sheet has an arc-shaped structure or a zigzag structure, which can make elastic pressure contact with the inner wall of the housing of the detection plug and the detection socket.

5. The photoelectric energy storage charge-discharge detection device according to claim 4, characterized in that: The photovoltaic energy storage box is connected to multiple photovoltaic modules through a combiner box, so that the current from multiple photovoltaic panels is concentrated together and then connected to the MPPT controller of the inverter through fewer cables.

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