A monitoring and protection device for photovoltaic energy storage battery cabinet

Abstract

The present application relates to a monitoring and protection device for a photovoltaic energy storage battery cabinet, which belongs to the technical field of photovoltaic energy storage batteries, and includes a battery cabinet body, a lifting assembly arranged in the battery cabinet body, a monitoring assembly arranged on the lifting end of the lifting assembly, a plurality of battery pack assemblies placed on the lifting end of the lifting assembly from bottom to top, and a heat dissipation assembly arranged on the battery cabinet body, wherein the monitoring assembly has a plurality of monitoring ends, the number of which is consistent with the number of battery pack assemblies and corresponds one to one, the monitoring end of the monitoring assembly faces the battery pack assembly corresponding to the position, so as to monitor the temperature of the battery pack assembly corresponding to the position, and the monitoring assembly is electrically connected to the lifting assembly. The present application has the effect of being able to perform a single heat dissipation on the battery pack assembly whose temperature is too high, thereby achieving the purpose of monitoring and protecting the battery pack assembly.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic energy storage batteries, and in particular to a monitoring and protection device for a photovoltaic energy storage battery cabinet. Background Art

[0002] Photovoltaic energy storage batteries are an indispensable part of solar photovoltaic power generation systems. They use solar energy to generate electricity and store the generated electricity through storage technology for emergency use. With the advancement of technology and the expansion of new energy application fields, the charge and discharge rates of photovoltaic energy storage batteries are also gradually increasing. Some new energy storage battery technologies, such as lithium-ion batteries, may have higher charge and discharge rates to meet the needs of certain specific applications, such as fast charging or high power output.

[0003] When photovoltaic energy storage batteries are charged and discharged at high rates, their heat will increase, and the service life of the battery is related to its temperature and temperature difference. The optimal operating temperature of photovoltaic energy storage batteries is 15℃-35℃, and the temperature difference must be less than 5℃. There are generally multiple groups of batteries in the energy storage system, and heat is accumulated in batteries that are close to each other. If conventional heat dissipation is used, on the one hand, it cannot ensure that the battery's operating temperature requirements can be met, and on the other hand, it cannot achieve a temperature difference of less than 5℃ between batteries.

[0004] The present application provides another technical solution capable of dissipating heat from a battery with an excessively high temperature, aiming to provide technicians in this field with a variety of options for solving the problem. Summary of the invention

[0005] In order to be able to perform a single heat dissipation on a battery pack assembly whose temperature is monitored to be too high, thereby achieving the purpose of monitoring and protecting the battery pack assembly, the present application provides a monitoring and protection device for a photovoltaic energy storage battery cabinet.

[0006] The monitoring and protection device of a photovoltaic energy storage battery cabinet provided in this application adopts the following technical solution:

[0007] A monitoring and protection device for a photovoltaic energy storage battery cabinet comprises a battery cabinet body, a lifting assembly arranged in the battery cabinet body, a monitoring assembly arranged on the lifting end of the lifting assembly, a plurality of battery pack assemblies placed on the lifting end of the lifting assembly from bottom to top, and a heat dissipation assembly arranged on the battery cabinet body. The monitoring assembly is provided with a plurality of monitoring ends, the number of which is consistent with the number of battery pack assemblies and corresponds one to one. The monitoring end of the monitoring assembly faces the battery pack assembly corresponding to the position so as to monitor the temperature of the battery pack assembly corresponding to the position. The monitoring assembly is electrically connected to the lifting assembly.

[0008] By adopting the above technical solution, the heat dissipation component dissipates heat for the battery pack assembly located in the battery cabinet body. When the temperature of a battery pack assembly is too high, the monitoring component corresponding to the position is triggered, and the controller triggers the lifting component so that the lifting end of the lifting component drives the battery pack assembly to move upward until the air inlet of the heat dissipation component faces the battery pack assembly with too high a temperature, thereby dissipating heat for the battery pack assembly with too high a temperature alone, thereby achieving the purpose of monitoring and protecting the battery pack assembly.

[0009] Optionally, the battery pack assembly includes a connecting seat, a mounting seat slidably connected to the connecting seat, and a photovoltaic energy storage battery body and a radiator arranged in the mounting seat, wherein the radiator is used to dissipate heat from the photovoltaic energy storage battery body.

[0010] By adopting the above technical solution, the presence of the radiator is used to dissipate heat from the photovoltaic energy storage battery body located in the mounting seat, so that the battery pack itself has the function of dissipating heat.

[0011] Optionally, the heat sink includes a heat conducting sheet, a heat conducting film, a cooling sheet, a connecting frame and a heat dissipation block which are connected in sequence, and the heat dissipation block, the connecting frame, the cooling sheet, the heat conducting film and the heat conducting sheet are connected via a locking assembly.

[0012] By adopting the above technical solution, under the connection action of the locking assembly, the thermally conductive sheet, the thermally conductive film, the cooling sheet, the connecting frame and the heat dissipation block together form a radiator for dissipating heat from the photovoltaic energy storage battery body.

[0013] Optionally, mounting grooves are provided on one side of the connecting frame close to the cooling plate and at the corners of the connecting frame, and a mounting block positioned in the mounting groove is fixedly connected to the cooling plate. After the cooling plate is positioned on the connecting frame, the cold surface of the cooling plate protrudes outward from the side of the connecting frame away from the heat dissipation block, and the cold surface of the cooling plate is in contact with the side of the photovoltaic energy storage battery body.

[0014] By adopting the above technical solution, the cold surface of the cooling sheet is fitted with the side of the photovoltaic energy storage battery body, and the photovoltaic energy storage battery body is cooled by the cooling sheet.

[0015] Optionally, the locking assembly includes a bending rod fixedly connected at the corner of the heat sink and a locking block rotatably connected to one end of the bending rod away from the heat sink, and the connecting frame, thermal conductive film and thermal conductive sheet are all provided with locking openings corresponding to the position of the locking block, and the cross-sections of the locking block and the locking opening are both set to be rectangular, and the cross-sectional area of ​​the locking block is smaller than the cross-sectional area of ​​the locking opening.

[0016] By adopting the above technical solution, the locking block is rotated so that the direction of the locking block is consistent with the direction of the locking port, the locking block passes through the locking port, and the locking block is rotated so that the locking block and the locking port are misaligned, thereby locking the heat sink, the connecting frame, the cooling plate, the thermal conductive film and the thermal conductive plate together.

[0017] Optionally, the connecting frame is slidingly connected to the inner wall of the mounting seat, and the connecting frame protrudes outside the mounting seat, and the inner frame side of the connecting seat is slidingly connected to the side of the connecting frame protruding outside the mounting seat to separate the fins of the radiator and the photovoltaic energy storage battery body.

[0018] By adopting the above technical solution, the fins of the heat sink block and the photovoltaic energy storage battery body are separated, so that the heat generated on the fins of the heat sink block cannot flow to the photovoltaic energy storage battery body; and when the air inlet corresponds to the position of the first heat dissipation hole group, the air flow can blow from the first heat dissipation hole group to the fins of the heat sink block, and enter the ventilation hood through the second heat dissipation hole group and the air inlet, and finally be discharged to the outside of the battery cabinet body through the heat dissipation fan.

[0019] Optionally, the heat dissipation assembly includes a cooling fan installed on the top surface of the battery cabinet body and a ventilation hood installed on the top wall of the battery cabinet body and connected to the cooling fan, an air inlet is provided at the bottom of each side of the ventilation hood, a first cooling hole group located between the fins of two adjacent radiators is penetrated through the side of the connecting seat, a second cooling hole group corresponding to the position of the first cooling hole group is provided on the inner side surface of the mounting seat, and the first cooling hole group, the second cooling hole group and the air inlet are connected.

[0020] By adopting the above technical solution, the first heat dissipation hole group, the second heat dissipation hole group and the air inlet are connected, so that the battery pack assembly with excessively high temperature can be cooled in a single way.

[0021] Optionally, the lifting assembly includes a lifting member vertically installed on the bottom wall of the battery cabinet body with the lifting end facing upward, and a placement plate horizontally arranged and fixedly connected to the lifting end of the lifting member, the monitoring assembly is arranged on the top surface of the placement plate, and a plurality of the battery pack assemblies are placed on the top surface of the placement plate from bottom to top.

[0022] By adopting the above technical solution, the lifting member drives the placement plate to move up so that the first heat dissipation hole group, the second heat dissipation hole group and the air inlet are connected, thereby performing a single heat dissipation for the battery pack assembly with excessive temperature, thereby achieving the purpose of monitoring and protecting the battery pack assembly.

[0023] Optionally, the monitoring component includes a vertical plate fixedly connected to the edge of the top surface of the placement plate and a plurality of infrared thermal imagers installed on the side surfaces of the vertical plate, and the monitoring end of the infrared thermal imager faces the battery pack assembly corresponding to the position.

[0024] By adopting the above technical solution, the monitoring end of the infrared thermal imager is directed toward the battery pack assembly corresponding to the position, so as to monitor each battery pack assembly individually.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The heat dissipation component dissipates heat for the battery pack assembly located in the battery cabinet body. When the temperature of a battery pack assembly is too high, the monitoring component at the corresponding position is triggered, and the controller triggers the lifting component so that the lifting end of the lifting component drives the battery pack assembly to move upward until the air inlet of the heat dissipation component faces the battery pack assembly with too high temperature, and the battery pack assembly with too high temperature is dissipated alone, thereby achieving the purpose of monitoring and protecting the battery pack assembly;

[0027] 2. Rotate the locking block so that the direction of the locking block is consistent with the direction of the locking port, the locking block passes through the locking port, and rotate the locking block so that the locking block and the locking port are misaligned, thereby locking the heat sink, the connection frame, the cooling sheet, the thermal conductive film and the thermal conductive sheet together;

[0028] 3. It plays a role of partitioning between the fins of the heat sink and the photovoltaic energy storage battery body, so that the heat generated on the fins of the heat sink cannot flow to the photovoltaic energy storage battery body; and when the air inlet corresponds to the position of the first heat dissipation hole group, the air flow can blow from the first heat dissipation hole group to the fins of the heat sink, and enter the ventilation hood through the second heat dissipation hole group and the air inlet, and finally be discharged to the outside of the battery cabinet body through the heat dissipation fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of this application.

[0030] Figure 2 yes Figure 1 A partial enlarged view of part A.

[0031] Figure 3 It is an exploded view of the radiator of the present application.

[0032] Figure 4 yes Figure 3 A partial enlarged view of part B.

[0033] Figure 5 yes Figure 3 A partial enlarged view of part C.

[0034] Figure 6 It is an exploded view of the mounting base and the connecting base of the present application.

[0035] Figure 7 yes Figure 6 A partial enlarged view of part D.

[0036] Explanation of the reference numerals: 1. battery cabinet body; 11. guide groove; 12. air inlet; 2. cooling fan; 21. ventilation hood; 211. air inlet; 3. lifting member; 31. placement plate; 4. vertical plate; 41. infrared thermal imager; 5. mounting seat; 51. first slide groove; 52. dovetail bar; 53. second heat dissipation hole group; 6. photovoltaic energy storage battery body; 7. heat conductive sheet; 71. thermal conductive film; 72. cooling sheet; 721. mounting block; 73. connecting frame; 731. mounting groove; 732. clearance groove; 733. locking mouth; 734. slide bar; 735. through mouth; 74. heat dissipation block; 75. bending rod; 76. locking block; 8. frame; 81. connecting block; 811. dovetail groove; 82. first heat dissipation hole group; 83. second slide groove; 84. wiring gap. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-7 This application is described in further detail.

[0038] The present application embodiment discloses a monitoring and protection device for a photovoltaic energy storage battery cabinet. Figure 1 and Figure 2 The monitoring and protection device of the photovoltaic energy storage battery cabinet includes a battery cabinet body 1, a lifting component arranged in the battery cabinet body 1, a monitoring component arranged on the lifting end of the lifting component, a battery pack assembly placed on the lifting end of the lifting component, and a heat dissipation component arranged on the battery cabinet body 1; a plurality of battery pack assemblies are arranged, and the plurality of battery pack assemblies are placed on the lifting end of the lifting component from bottom to top in sequence; a plurality of monitoring ends of the monitoring component are arranged, and the number of the monitoring ends of the monitoring component is consistent with the number of the battery pack assemblies and corresponds one to one, and the monitoring end of the monitoring component faces the battery pack assembly corresponding to the position to monitor the temperature of the battery pack assembly corresponding to the position; the monitoring component is electrically connected to the lifting component through a controller installed on the battery cabinet body 1.

[0039] Under normal circumstances, the heat dissipation component is used to dissipate heat for the battery pack assemblies located in the battery cabinet body 1. When the temperature of a battery pack assembly is too high, the monitoring component at the corresponding position is triggered, and the controller triggers the lifting component so that the lifting end of the lifting component drives the battery pack assembly to move upward until the air inlet 211 of the heat dissipation component is directed toward the battery pack assembly with too high a temperature, thereby dissipating heat for the battery pack assembly with too high a temperature alone, thereby achieving the purpose of monitoring and protecting the battery pack assembly.

[0040] Reference Figure 1The heat dissipation assembly includes a heat dissipation fan 2 installed on the top surface of the battery cabinet body 1 and a ventilation cover 21 with an upper opening and installed on the top wall of the battery cabinet body 1. The heat dissipation fan 2 is connected to the ventilation cover 21. Each side bottom of the ventilation cover 21 is provided with an air inlet 211; and a plurality of evenly distributed air inlet holes 12 are provided on the side of the battery cabinet body 1. Thus, the heat dissipation fan 2 is started, and the hot air flow in the battery cabinet body 1 enters the ventilation cover 21 through the air inlet 211, and is finally discharged to the outside of the battery cabinet body 1 through the heat dissipation fan 2, so as to achieve the purpose of dissipating the heat inside the battery cabinet body 1; and the external air flow can enter the battery cabinet body 1 through the air inlet 12.

[0041] Reference Figure 1 and Figure 2 The lifting component includes a lifting member 3 vertically installed on the inner bottom wall of the battery cabinet body 1 with the lifting end facing upward, and a placement plate 31 horizontally arranged and fixedly connected to the lifting end of the lifting member 3; the monitoring component is arranged on the top surface of the placement plate 31, and the battery pack assembly is placed on the top surface of the placement plate 31. In this embodiment, the lifting member 3 is an electric telescopic rod.

[0042] In order to enable the placement plate 31 to move vertically more smoothly, guide blocks are fixedly connected to the opposite ends of the placement plate 31, and vertically arranged guide grooves 11 are opened on the inner wall of the battery cabinet body 1. The number of guide grooves 11 is consistent with the number of guide blocks and corresponds one to one, and the guide blocks are slidably connected to the guide grooves 11 corresponding to the positions.

[0043] The monitoring component includes a vertical plate 4 fixedly connected to the edge of the top surface of the placement plate 31 and a plurality of infrared thermal imagers 41 installed on the side of the vertical plate 4. The infrared thermal imager 41 is located on the side of the vertical plate 4 close to the battery pack assembly. The number of infrared thermal imagers 41 is consistent with the number of battery pack assemblies and corresponds one to one. The monitoring end of the infrared thermal imager 41 faces the battery pack assembly corresponding to the position; through multiple infrared thermal imagers 41, one-to-one monitoring of the battery pack assembly can be achieved; the infrared thermal imager 41 is electrically connected to the lifting member 3 through a controller installed on the battery cabinet body 1.

[0044] Reference Figure 2 and Figure 3 The battery pack assembly includes a connecting seat, a mounting seat 5 slidably connected in the connecting seat, and a photovoltaic energy storage battery body 6 arranged in the mounting seat 5 (see Figure 6 ) and a radiator; the radiator is used to dissipate heat for the photovoltaic energy storage battery body 6, the mounting seat 5 is used to install the radiator and the photovoltaic energy storage battery body 6 together, the connecting seat connects multiple mounting seats 5, and the multiple connecting seats are placed on the top surface of the placement plate 31 from bottom to top.

[0045] Reference Figure 3 ,and Figure 4The radiator includes a heat conducting sheet 7, a heat conducting film 71, a cooling sheet 72, a connecting frame 73 and a heat sink 74 which are connected in sequence; a mounting groove 731 is provided on one side of the connecting frame 73 close to the cooling sheet 72 and at the four corners of the connecting frame 73; mounting blocks 721 are fixedly connected to the four corners of the cooling sheet 72, and the mounting blocks 721 are positioned in the mounting grooves 731 corresponding to the positions to position the cooling sheet 72 on the connecting frame 73; the cold surface of the cooling sheet 72 faces the heat conducting film 71, and after the cooling sheet 72 is positioned on the connecting frame 73, the cold surface of the cooling sheet 72 protrudes outward from the side of the connecting frame 73 away from the heat sink 74.

[0046] The thermal conductive film 71 is attached to the cold surface of the cooling sheet 72, so that the thermal conductive film 71 wraps the cold surface of the cooling sheet 72, and the thermal conductive film 71 is attached to the side of the connection frame 73 away from the heat sink 74. In this embodiment, the thermal conductive sheet 7 is a copper sheet, the contour of the copper sheet is consistent with the contour of the thermal conductive film 71, and the copper sheet is attached to the side of the thermal conductive film 71 away from the cooling sheet 72.

[0047] Reference Figure 4 and Figure 5 A locking assembly is provided on the heat sink 74, and the heat sink 74, the connecting frame 73, the cooling sheet 72, the thermally conductive film 71 and the thermally conductive sheet 7 are connected by the locking assembly; the locking assembly includes a bending rod 75 fixedly connected to the corner of the heat sink 74 and a locking block 76 rotatably connected to the end of the bending rod 75 away from the heat sink 74; the cross-section of the bending rod 75 is L-shaped, and a clearance groove 732 corresponding to the position of the bending rod 75 is provided on the side of the connecting frame 73 away from the cooling sheet 72. Under the clearance effect of the clearance groove 732, the heat sink 74 is connected to the side of the connecting frame 73 away from the cooling sheet 72, and the heat sink 74 is in contact with the hot surface of the cooling sheet 72.

[0048] Reference Figure 4 and Figure 5 The connection frame 73, the mounting block 721, the heat conductive film 71 and the heat conductive sheet 7 are all provided with a locking opening 733 corresponding to the position of the locking block 76. The locking opening 733 on the connection frame 73 is connected to the mounting groove 731. The cross-sections of the locking block 76 and the locking opening 733 are both set to be rectangular, and the cross-sectional area of ​​the locking block 76 is smaller than the cross-sectional area of ​​the locking opening 733. When the locking block 76 passes through the locking opening 733, the locking block 76 is rotated so that the locking block 76 and the locking opening 733 are misaligned, thereby locking the heat dissipation block 74, the connection frame 73, the cooling sheet 72, the heat conductive film 71 and the heat conductive sheet 7 together.

[0049] In this embodiment, four groups of locking components are provided, and the four groups of locking components correspond to the positions of four mounting blocks 721 respectively, so that the heat sink 74, the connecting frame 73, the cooling plate 72, the thermal conductive film 71 and the thermal conductive plate 7 can be locked together more stably.

[0050] Reference Figure 6 and Figure 7 The mounting seat 5 is a rectangular seat with an opening on one side. There are multiple photovoltaic energy storage battery bodies 6 and radiators, and the photovoltaic energy storage battery bodies 6 are located between two adjacent radiators. The heat conducting sheet 7 of the radiator fits the side of the photovoltaic energy storage battery body 6. The top and bottom surfaces of the connection frame 73 are fixedly connected with a slide bar 734. The top and bottom of the inner wall of the mounting seat 5 are provided with a first slide groove 51. Under the sliding connection between the slide bar 734 and the first slide groove 51, the radiator is slidably connected to the mounting seat 5 through the opening of the mounting seat 5; and after the radiator is slidably connected to the mounting seat 5, the connection frame 73 protrudes outside the mounting seat 5.

[0051] The positive terminal and the negative terminal of the photovoltaic energy storage battery body 6 are both facing the opening of the mounting seat 5, and the positive terminal and the negative terminal of the photovoltaic energy storage battery body 6 are both located inside the mounting seat 5; multiple photovoltaic energy storage battery bodies 6 in the same mounting seat 5 are arranged in series through connecting wires, and the connecting frame 73, the thermal conductive film 71 and the thermal conductive sheet 7 are all provided with through-holes 735 for the connecting wires to pass through.

[0052] In this embodiment, four mounting seats 5 are arranged in the same connecting seat, and the four mounting seats 5 are connected end to end and distributed in a square shape; after the four mounting seats 5 are arranged in the connecting seat, the inner side surfaces of the four mounting seats 5 are in contact with the outer side surface of the ventilation hood 21; the photovoltaic energy storage battery bodies 6 in two adjacent mounting seats 5 are also arranged in series through connecting wires, so that the multiple photovoltaic energy storage battery bodies 6 located in the four mounting seats 5 are connected in series to form a battery pack.

[0053] The connecting seat includes a frame 8 and a connecting block 81 fixedly connected to the inner frame side of the frame 8 and located at the corners of the frame 8; four connecting blocks 81 are provided, and the four connecting blocks 81 are respectively located at the four corners of the frame 8; both ends of each mounting seat 5 are fixedly connected with a vertically arranged dovetail strip 52, and a vertically arranged dovetail groove 811 is provided on the side where two adjacent connecting blocks 81 are close to each other, and the top end of the dovetail groove 811 is open and the bottom end of the dovetail groove 811 is sealed; the dovetail strip 52 is slidably connected to the dovetail groove 811 corresponding to the position so as to install the mounting seat 5 on the connecting seat.

[0054] Both the mounting seat 5 and the connecting block 81 are provided with threading channels for passing connecting wires to realize the series connection of the photovoltaic energy storage battery bodies 6 in two adjacent mounting seats 5, thereby connecting multiple photovoltaic energy storage battery bodies 6 located in four mounting seats 5 in series to form a battery pack.

[0055] The four sides of the frame 8 are penetrated by multiple groups of first heat dissipation holes 82, and the first heat dissipation hole group 82 is located between the fins of two adjacent heat dissipation blocks 74. The inner side surface of the mounting base 5 is provided with a second heat dissipation hole group 53 corresponding to the position of the first heat dissipation hole group 82. The first heat dissipation hole group 82 and the second heat dissipation hole group 53 are used to dissipate the heat generated by the fins of the heat dissipation block 74.

[0056] In the process of dissipating heat to the photovoltaic energy storage battery body 6 through the cooling plate 72, the heat generated on the hot surface of the cooling plate 72 will be transferred to the heat dissipation block 74. The existence of the first heat dissipation hole group 82 and the second heat dissipation hole group 53 can dissipate the heat on the fins of the heat dissipation block 74.

[0057] A plurality of vertically arranged second slide grooves 83 are provided on the inner frame side of the frame body 8, the number of the second slide grooves 83 is consistent with the number of the first slide grooves 51 and corresponds one to one, and the connecting frame 73 extends to one side outside the opening of the mounting seat 5 and is slidingly connected with the second slide groove 83; the sliding connection between the connecting frame 73 and the second slide groove 83 serves as a partition between the fins of the heat sink 74 and the photovoltaic energy storage battery body 6, so that the heat generated on the fins of the heat sink 74 cannot flow to the photovoltaic energy storage battery body 6; and when the air inlet 211 corresponds to the position of the first heat dissipation hole group 82, the air flow can blow from the first heat dissipation hole group 82 to the fins of the heat sink 74, and enter the ventilation hood 21 through the second heat dissipation hole group 53 and the air inlet 211, and finally be discharged to the outside of the battery cabinet body 1 through the heat dissipation fan 2.

[0058] The implementation principle of the monitoring and protection device of a photovoltaic energy storage battery cabinet in the embodiment of the present application is as follows: the heat sink 74, the connection frame 73, the cooling sheet 72, the thermal conductive film 71 and the thermal conductive sheet 7 are locked together by a locking assembly to form a heat sink; under the sliding connection of the slide bar 734 and the first slide groove 51, the heat sink is slid into the mounting seat 5, and then the photovoltaic energy storage battery body 6 is placed into the mounting seat 5, so that the photovoltaic energy storage battery body 6 is located between two adjacent heat sinks, and the thermal conductive sheet 7 of the heat sink is in contact with the side of the photovoltaic energy storage battery body 6; the series connection between multiple photovoltaic energy storage battery bodies 6 is achieved by connecting wires; and the installation of the heat sinks and photovoltaic energy storage battery bodies 6 in four mounting seats 5 is completed in sequence.

[0059] Before installing the mounting seat 5 on the frame 8, the connecting wires of the photovoltaic energy storage battery body 6 located at the rear end of the previous mounting seat 5 are passed through the threading channel to the front end of the rear mounting seat 5, and the connecting wires are connected in series with the photovoltaic energy storage battery body 6 on the front end of the rear mounting seat 5; so as to realize the series connection of the photovoltaic energy storage battery bodies 6 in two adjacent mounting seats 5, thereby connecting the multiple photovoltaic energy storage battery bodies 6 located in four mounting seats 5 in series to form a battery pack; on the other hand, the model of the cooling plate 72 is TEC1-12702, and the cooling plate 72 also needs to be connected to a power supply to start. A power supply electrically connected to the cooling plate 72 is installed on the outer frame side of the cabinet (not shown in the figure). Before installing the mounting seat 5 on the frame 8, the two leads of the cooling plate 72 need to pass through the connecting frame 73 and the frame 8 and extend to the outside of the frame 8.

[0060] Under the sliding connection of the dovetail bar 52 and the dovetail groove 811, the four mounting seats 5 are slidably connected in the connecting seat in sequence. At this time, the connecting frame 73 is slidably connected with the second slide groove 83 to serve as a partition between the fins of the heat sink 74 and the photovoltaic energy storage battery body 6.

[0061] After the assembly of multiple battery pack assemblies is completed, the multiple battery pack assemblies are placed on the top surface of the placement plate 31 from bottom to top, so that the infrared thermal imager 41 corresponds to the position of the battery pack assembly; then the two leads extending from the cooling sheet 72 to the outside of the frame 8 are electrically connected to the power supply; at the same time, a wiring notch 84 is opened on one side of the frame 8 and at the head and tail ends of the frame 8 (see Figure 6 ), the two wiring notches 84 correspond to the positions of the positive terminal and the negative terminal of the battery pack respectively, so as to be used for wiring the battery pack and powering the corresponding equipment through the battery pack; when the battery pack assembly is placed on the top surface of the placement plate 31, it is necessary to ensure that the side of the cabinet with the wiring notch 84 faces the cabinet door of the battery cabinet body 1 to facilitate wiring.

[0062] Under normal circumstances, the heat dissipation fan 2 can be used to dissipate heat from the battery pack assembly; the heat dissipation fan 72 can also be used to dissipate heat from the battery pack assembly, and the heat generated by the hot surface of the cooling sheet 72 can be dissipated by the heat dissipation fan 2. When one of the infrared thermal imagers 41 detects that the temperature of the battery pack assembly is too high, the infrared thermal imager 41 activates the electric telescopic rod through the controller, so that the electric telescopic rod drives the placement plate 31 to move upward until the second heat dissipation hole group 53 of the battery pack assembly with too high temperature is directly opposite to and connected to the air inlet 211, and the heat dissipation fan 2 is used to dissipate heat from the battery pack assembly with too high temperature alone, so as to achieve the purpose of monitoring and protecting the battery pack assembly.

[0063] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A monitoring and protection device for a photovoltaic energy storage battery cabinet, characterized in that: The invention comprises a battery cabinet body (1), a lifting component arranged in the battery cabinet body (1), a monitoring component arranged on the lifting end of the lifting component, a plurality of battery pack assemblies placed on the lifting end of the lifting component in order from bottom to top, and a heat dissipation component arranged on the battery cabinet body (1), wherein the monitoring component is provided with a plurality of monitoring ends, the number of the monitoring ends of the monitoring component is consistent with the number of the battery pack assemblies and corresponds one to one, the monitoring end of the monitoring component faces the battery pack assembly at the corresponding position to monitor the temperature of the battery pack assembly at the corresponding position, and the monitoring component is electrically connected to the lifting component; The battery pack assembly comprises a connecting seat, a mounting seat (5) slidably connected in the connecting seat, and a photovoltaic energy storage battery body (6) and a radiator arranged in the mounting seat (5), wherein the radiator is used to dissipate heat from the photovoltaic energy storage battery body (6); A plurality of photovoltaic energy storage battery bodies (6) and radiators are provided, and the photovoltaic energy storage battery body (6) is located between two adjacent radiators; The heat dissipation assembly comprises a heat dissipation fan (2) mounted on the top surface of the battery cabinet body (1) and a ventilation cover (21) mounted on the inner top wall of the battery cabinet body (1) and connected to the heat dissipation fan (2); each side bottom of the ventilation cover (21) is provided with an air inlet (211); the side of the connecting seat is provided with a first heat dissipation hole group (82) located between the fins of two adjacent radiators; the inner side of the mounting seat (5) is provided with a second heat dissipation hole group (53) corresponding to the position of the first heat dissipation hole group (82); the first heat dissipation hole group (82), the second heat dissipation hole group (53) and the air inlet (211) are connected; The lifting assembly comprises a lifting member (3) vertically mounted on the inner bottom wall of the battery cabinet body (1) and arranged with its lifting end facing upward, and a placement plate (31) horizontally arranged and fixedly connected to the lifting end of the lifting member (3), the monitoring assembly being arranged on the top surface of the placement plate (31), and a plurality of the battery pack assemblies being placed on the top surface of the placement plate (31) from bottom to top; The monitoring assembly comprises a vertical plate (4) fixedly connected to the edge of the top surface of the placement plate (31) and a plurality of infrared thermal imagers (41) mounted on the side of the vertical plate (4), wherein the monitoring end of the infrared thermal imager (41) faces the battery pack assembly corresponding to the position; The heat dissipation component is used to dissipate heat from the battery pack assembly located in the battery cabinet body (1). When the temperature of a battery pack assembly is too high, the monitoring component corresponding to the position is triggered, and the controller triggers the lifting component so that the lifting end of the lifting component drives the battery pack assembly to move upward until the air inlet (211) of the heat dissipation component faces the battery pack assembly with too high a temperature, thereby dissipating heat from the battery pack assembly with too high a temperature alone, thereby achieving the purpose of monitoring and protecting the battery pack assembly.

2. A monitoring and protection device for a photovoltaic energy storage battery cabinet according to claim 1, characterized in that: The heat sink comprises a heat conducting sheet (7), a heat conducting film (71), a cooling sheet (72), a connection frame (73) and a heat dissipation block (74) which are connected in sequence, and the heat dissipation block (74), the connection frame (73), the cooling sheet (72), the heat conducting film (71) and the heat conducting sheet (7) are connected via a locking assembly.

3. A monitoring and protection device for a photovoltaic energy storage battery cabinet according to claim 2, characterized in that: The connection frame (73) is provided with mounting grooves (731) on one side close to the cooling plate (72) and at the corners of the connection frame (73); the cooling plate (72) is fixedly connected with a mounting block (721) positioned in the mounting groove (731); when the cooling plate (72) is positioned on the connection frame (73), the cold surface of the cooling plate (72) protrudes outward from the side of the connection frame (73) away from the heat dissipation block (74), and the cold surface of the cooling plate (72) is in contact with the side of the photovoltaic energy storage battery body (6).

4. A monitoring and protection device for a photovoltaic energy storage battery cabinet according to claim 2, characterized in that: The locking assembly comprises a bending rod (75) fixedly connected to the corner of the heat dissipation block (74) and a locking block (76) rotatably connected to one end of the bending rod (75) away from the heat dissipation block (74); the connection frame (73), the thermal conductive film (71) and the thermal conductive sheet (7) are all provided with a locking opening (733) corresponding to the position of the locking block (76); the cross-sections of the locking block (76) and the locking opening (733) are both arranged in a rectangular shape, and the cross-sectional area of ​​the locking block (76) is smaller than the cross-sectional area of ​​the locking opening (733).

5. The monitoring and protection device for a photovoltaic energy storage battery cabinet according to claim 2 is characterized in that: The connection frame (73) is slidably connected to the inner wall of the mounting seat (5), and the connection frame (73) protrudes outside the mounting seat (5). The inner frame side of the connection seat is slidably connected to the side of the connection frame (73) protruding outside the mounting seat (5) to separate the fins of the radiator and the photovoltaic energy storage battery body (6).

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