Photovoltaic energy storage BMS system

Abstract

The utility model discloses a photovoltaic energy storage BMS (battery management system) system, which comprises a case, a support frame is fixedly connected to the bottom of the inner cavity of the case, a plurality of batteries are placed in the inner cavity of the support frame, a plurality of frame bodies are arranged in the inner cavity of the support frame in a sliding manner, and the plurality of batteries are separated by the frame bodies. A frame body is placed between each row of batteries, the batteries are separated, the frame bodies are in sliding connection with the top end face of a supporting frame through sliding seats, when a heat conduction plate embedded in an inner cavity of each frame body makes close contact with each adjacent row of batteries, sliding is stopped, meanwhile, threaded bolts conduct sliding guiding on the inner surfaces of through grooves, and limiting nuts are fastened, so that the batteries are separated from one another. The position of the frame body is limited and fixed, the heat conducting plate dissipates heat generated by the battery in a phase change heat dissipation mode, and when the temperature rises to the phase change temperature, the material is converted into a liquid state from a solid state, a large amount of heat is absorbed, and the temperature of the surrounding environment is reduced, so that the heat dissipation effect is improved, and the operation of equipment is guaranteed to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic energy storage, and in particular relates to a photovoltaic energy storage BMS system. Background Art

[0002] Photovoltaic energy storage BMS is a key component of the photovoltaic energy storage system. It plays a vital role in ensuring the safe and stable operation of the energy storage system and improving energy utilization efficiency.

[0003] The BMS operates as follows: sensors installed on the battery pack (such as voltage, current, and temperature sensors) collect real-time information on various battery parameters. These sensors convert the collected analog signals into digital signals and transmit them to the BMS controller. The controller processes and analyzes this data based on preset algorithms and strategies to determine whether the battery is functioning properly and whether balancing, protection, or adjustment of the charge and discharge strategy are necessary. If appropriate action is required, the controller sends a control signal to an actuator (such as a relay or switch), which then performs the specific operation, such as disconnecting the charging circuit or activating the balancing circuit.

[0004] Since the battery is a vital component, it generates a lot of heat when working. However, when the existing system equipment is running, the heat dissipation holes opened use natural heat dissipation, which has the defect of insufficient heat dissipation. Overheating of the battery will cause the battery to fail to operate normally, thereby causing the overall equipment performance to decline. Utility Model Content

[0005] In response to one or more of the above defects or improvement needs in the prior art, a photovoltaic energy storage BMS system is provided, which has improved heat dissipation and ensures normal operation of the equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides a photovoltaic energy storage BMS system, comprising a chassis, wherein the bottom of the inner cavity of the chassis is fixedly connected to a support frame, a plurality of batteries are placed in the inner cavity of the support frame, and a plurality of frames are slidably provided in the inner cavity of the support frame, the frames separate the plurality of batteries, and the inner cavity of the frame is embedded and fixedly connected with a heat conducting plate, and both sides of the top of each frame are fixedly connected to a slide seat, and the top of the inner cavity of the slide seat is slidably connected to the top end surface of the support frame, and the top of both sides of each frame is fixedly connected to a threaded bolt, and both sides of the support frame are provided with a through groove adapted to slide with the threaded bolt, and the threaded bolt passes through the surfaces on both sides of the support frame and is threadedly connected to a limiting nut, the heat conducting plate is tightly fitted to the battery, and the bottom of the frame is tightly fitted to the bottom of the inner cavity of the support frame.

[0007] The present invention is further configured such that the smooth portion of the threaded bolt is slidably connected to the through groove, the threaded portion of the threaded bolt is threadedly connected to the inner surface of the limiting nut, and the limiting nut is tightly fitted to the support frame.

[0008] The present invention is further configured such that a shift block is integrally and fixedly connected to the surface of the limiting nut, and the surface of the shift block is provided with anti-slip grooves.

[0009] The present invention is further configured such that the heat conducting plate is made of a copper mesh and paraffin composite material, and the highest end surface of the heat conducting plate is lower than the lowest end surface of the through groove.

[0010] The present invention is further configured such that a placement hole is provided at the bottom of the inner cavity of the support frame and at a position corresponding to each of the batteries, the bottom of the battery is placed on the inner surface of the placement hole, and a rubber ring is filled between the placement hole and the battery.

[0011] The present invention is further configured such that a plurality of heat dissipation holes are provided on the front and back of the chassis, and the heat dissipation holes are designed to be inclined downward.

[0012] The present invention is further configured such that an access panel is detachably connected to one side of the chassis.

[0013] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0014] In general, the above technical solutions conceived by the present invention have the following beneficial effects compared with the prior art:

[0015] (1) The utility model separates the batteries by placing a frame between each row of batteries. The frame is slidably connected to the top end face of the support frame through a slide. When the heat conduction plate embedded in the inner cavity of the frame is in close contact with each adjacent row of batteries, it stops sliding. At the same time, the threaded bolt slides and guides on the inner surface of the through groove, and the position of the frame is limited and fixed by tightening the limiting nut. The heat conduction plate dissipates the heat generated by the battery by its phase change heat dissipation method. When the temperature rises to the phase change temperature, the material changes from solid to liquid, absorbs a large amount of heat, and reduces the temperature of the surrounding environment, thereby improving the heat dissipation effect and ensuring the operation of the equipment to a certain extent.

[0016] (2) The utility model provides a shift block to facilitate the rotation of the limit nut, so that the limit nut and the threaded bolt are threadedly connected to limit and tighten the position of the frame.

[0017] (3) The utility model adopts a heat conducting plate composed of a copper mesh and paraffin composite material, wherein the surface of the copper mesh is filled or coated with paraffin. The paraffin utilizes its phase transition temperature. When the temperature rises to the phase transition temperature, the material changes from solid to liquid, absorbs a large amount of heat, and reduces the temperature of the surrounding environment. When the temperature drops below the phase transition temperature, the material changes from liquid to solid again, releasing the stored heat. This phase change process can be repeated, thereby realizing dynamic regulation and heat dissipation of heat. The paraffin can be supported by the copper mesh;

[0018] (4) The present invention can better stabilize the bottom of the battery and prevent the battery from sliding by providing a rubber ring between the inner surface of the placement hole and the battery.

[0019] (5) The utility model provides an inspection panel so that the interior of the chassis can be opened for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the connection between the heat conducting plate and the battery of the utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of the placement frame structure of the utility model;

[0023] Figure 4 This is a back view of the chassis structure of the present invention.

[0024] In all the drawings, the same reference numerals represent the same technical features, specifically: 1. Chassis, 2. Support frame, 3. Battery, 4. Frame, 5. Heat conduction plate, 6. Slide, 7. Threaded bolt, 8. Through slot, 9. Limiting nut, 10. Placement hole, 11. Rubber ring, 12. Heat dissipation hole, 13. Inspection panel. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] The heat dissipation bracket of the photovoltaic inverter in the preferred embodiment of the utility model is as follows Figures 1 to 4As shown in the figure, a photovoltaic energy storage BMS system of an embodiment includes a chassis 1, a support frame 2 is fixedly connected to the bottom of the inner cavity of the chassis 1, a plurality of batteries 3 are placed in the inner cavity of the support frame 2, a plurality of frames 4 are slidingly set in the inner cavity of the support frame 2, the frames 4 separate the plurality of batteries 3, and a heat conducting plate 5 is embedded and fixedly connected to the inner cavity of the frame 4. The heat conducting plate 5 is composed of a copper mesh paraffin composite material. The highest end surface of the heat conducting plate 5 is lower than the lowest end surface of the through groove 8. The heat conducting plate 5 is composed of a copper mesh paraffin composite material, wherein the surface of the copper mesh is filled or coated with paraffin. The paraffin utilizes its phase change temperature. When the temperature rises to the phase change temperature, the material changes from solid to solid. It changes to liquid, absorbs a large amount of heat, and reduces the temperature of the surrounding environment. When the temperature drops below the phase change temperature, the material changes from liquid to solid, releasing the stored heat. This phase change process can be repeated, thereby realizing dynamic regulation and heat dissipation of heat. The paraffin can be supported by the copper mesh. The two sides of the top of each frame 4 are fixedly connected with a slide 6, and the top of the inner cavity of the slide 6 is slidably connected to the top end face of the support frame 2. The top of each two sides of the frame 4 is fixedly connected with a threaded bolt 7, and the smooth part of the threaded bolt 7 is slidably connected to the through groove 8, and the thread of the threaded bolt 7 is threadedly connected to the inner surface of the limit nut 9. The limiting nut 9 is tightly fitted with the support frame 2. Both sides of the support frame 2 are provided with a through groove 8 that slides with the threaded bolt 7. The threaded bolt 7 passes through the surfaces on both sides of the support frame 2 and is threadedly connected to the limiting nut 9. The surface of the limiting nut 9 is fixedly connected with a shift block, and the surface of the shift block is provided with an anti-slip pattern. By setting the shift block, it is convenient to rotate the limiting nut 9 so that the limiting nut 9 and the threaded bolt 7 are threadedly connected to limit the position of the frame 4. The heat conducting plate 5 fits tightly with the battery 3, and the bottom of the frame 4 fits tightly with the bottom of the inner cavity of the support frame 2. By placing a frame 4 between each row of batteries 3 , the batteries 3 are separated, and the frame 4 is slidably connected to the top end surface of the support frame 2 through the slide 6. When the heat conducting plate 5 embedded in the inner cavity of the frame 4 is in close contact with each adjacent row of batteries 3, it stops sliding. At the same time, the threaded bolt 7 slides and guides on the inner surface of the through groove 8, and the position of the frame 4 is limited and fixed by tightening the limiting nut 9. The heat conducting plate 5 uses its phase change heat dissipation method to dissipate the heat generated by the battery 3. When the temperature rises to the phase change temperature, the material changes from solid to liquid, absorbing a large amount of heat, reducing the temperature of the surrounding environment, thereby improving the heat dissipation effect and ensuring the operation of the equipment to a certain extent.

[0028] Example 2:

[0029] Figure 1-4The photovoltaic energy storage BMS system of an embodiment of the present invention is shown, including a chassis 1, a plurality of heat dissipation holes 12 are provided on the front and back of the chassis 1, and the heat dissipation holes 12 are designed to be inclined downward. An inspection panel 13 is detachably connected to one side of the chassis 1. By setting the inspection panel 13, the interior of the chassis 1 can be opened for inspection. A support frame 2 is fixedly connected to the bottom of the inner cavity of the chassis 1. A plurality of batteries 3 are placed in the inner cavity of the support frame 2. A placement hole 10 is provided at the bottom of the inner cavity of the support frame 2 and at a position corresponding to each battery 3. The bottom of the battery 3 is placed on the inner surface of the placement hole 10. A rubber ring 11 is filled between the placement hole 10 and the battery 3. By setting the rubber ring between the inner surface of the placement hole 10 and the battery 3 11. The bottom of the battery 3 can be better stabilized to prevent the battery 3 from sliding. The inner cavity of the support frame 2 is slidingly provided with multiple frames 4, which separate the multiple batteries 3. The inner cavity of the frame 4 is embedded and fixedly connected with a heat conducting plate 5. Both sides of the top of each frame 4 are fixedly connected with a slide 6. The top of the inner cavity of the slide 6 is slidably connected to the top end face of the support frame 2. The top of both sides of each frame 4 is fixedly connected with a threaded bolt 7. Both sides of the support frame 2 are provided with a through groove 8 that is adapted to slide with the threaded bolt 7. The threaded bolt 7 passes through the surfaces on both sides of the support frame 2 and is threadedly connected to a limiting nut 9. The heat conducting plate 5 fits tightly against the battery 3, and the bottom of the frame 4 fits tightly against the bottom of the inner cavity of the support frame 2.

[0030] Working principle: When the present invention is used, the user separates the batteries 3 by placing a frame 4 between each row of batteries 3. The frame 4 is slidably connected to the top end surface of the support frame 2 through a slide 6. When the heat conducting plate 5 embedded in the inner cavity of the frame 4 is in close contact with each adjacent row of batteries 3, it stops sliding. At the same time, the threaded bolt 7 slides and guides on the inner surface of the through groove 8, and the position of the frame 4 is limited and fixed by tightening the limiting nut 9. The heat conducting plate 5 uses its phase change heat dissipation method to dissipate the heat generated by the battery 3. The heat conducting plate 5 is composed of a copper mesh paraffin composite material, wherein the surface of the copper mesh is filled or The operator applies paraffin wax, which uses its phase change temperature. When the temperature rises to the phase change temperature, the material changes from solid to liquid, absorbing a large amount of heat and lowering the temperature of the surrounding environment. When the temperature drops below the phase change temperature, the material changes from liquid to solid and releases the stored heat. This phase change process can be repeated, thereby achieving dynamic regulation and heat dissipation of heat. The copper mesh can support the paraffin wax. When the temperature rises to the phase change temperature, the material changes from solid to liquid, absorbing a large amount of heat and lowering the temperature of the surrounding environment, thereby improving the heat dissipation effect and ensuring the operation of the equipment to a certain extent.

[0031] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A photovoltaic energy storage BMS system, comprising a chassis, a support frame fixedly connected to the bottom of the chassis inner cavity, and a plurality of batteries placed in the inner cavity of the support frame, characterized in that: The inner cavity of the support frame is slidingly provided with multiple frames, and the frames separate the multiple batteries. The inner cavity of the frame is embedded and fixedly connected with a heat conducting plate. Both sides of the top of each frame are fixedly connected with a slide seat. The top of the inner cavity of the slide seat is slidably connected to the top end surface of the support frame. The top of both sides of each frame is fixedly connected with a threaded bolt. Both sides of the support frame are provided with through grooves adapted to slide with the threaded bolts. The threaded bolts pass through the surfaces on both sides of the support frame and are threadedly connected with limiting nuts. The heat conducting plate fits tightly against the battery, and the bottom of the frame fits tightly against the bottom of the inner cavity of the support frame.

2. A photovoltaic energy storage BMS system according to claim 1, characterized in that: The smooth part of the threaded bolt is slidably connected to the through groove, the threaded part of the threaded bolt is threadedly connected to the inner surface of the limiting nut, and the limiting nut is tightly fitted to the support frame.

3. A photovoltaic energy storage BMS system according to claim 1, characterized in that: A shift block is integrally and fixedly connected to the surface of the limiting nut, and the surface of the shift block is provided with anti-slip grooves.

4. A photovoltaic energy storage BMS system according to claim 1, characterized in that: The heat conducting plate is made of a copper mesh paraffin composite material, and the highest end surface of the heat conducting plate is lower than the lowest end surface of the through groove.

5. A photovoltaic energy storage BMS system according to claim 1, characterized in that: A placement hole is provided at the bottom of the inner cavity of the support frame and at a position corresponding to each battery. The bottom of the battery is placed on the inner surface of the placement hole, and a rubber ring is filled between the placement hole and the battery.

6. A photovoltaic energy storage BMS system according to claim 1, characterized in that: A plurality of heat dissipation holes are provided on the front and back of the chassis, and the heat dissipation holes are designed to be inclined downward.

7. The photovoltaic energy storage BMS system according to claim 1, characterized in that: An access panel is detachably connected to one side of the chassis.

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