Active equalization and regulation structure of lithium battery

Abstract

The utility model discloses a kind of lithium battery active equalization adjustment structures, belong to lithium battery technical field.Structure includes shell, battery cell, protection plate and be set on quick release mechanism and heat dissipation mechanism of shell.The quick release mechanism includes the pressing plate and down pressure assembly that are rotatably connected in shell by plate shaft, down pressure assembly is driven the pressing block on the pressure rod driving link, and pressing plate is pressed to realize the quick fixing or release of protection plate.Heat dissipation mechanism is set on shell side wall, including heat conduction connection's even heat piece with battery cell and fan for forced air cooling.The utility model is set by the cooperation of quick release mechanism and heat dissipation mechanism, solve the problem that protection plate is replaced complex and heat dissipation is not smooth in prior art, reach the beneficial effect that it is convenient to quickly disassemble and replace protection plate, significantly improve maintenance efficiency, and can provide active efficient heat dissipation for equipment, guarantee operation safety and stability.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to an active balancing adjustment structure for lithium batteries. Background Technology

[0002] Lithium-ion batteries are widely used in electric vehicles, energy storage devices, and other fields due to their high energy density and long cycle life. To ensure the consistency of individual cells within a lithium-ion battery pack and extend the overall lifespan of the pack, battery management devices are typically equipped with active balancing functions. This function uses energy transfer circuits to transfer energy from cells with higher charge levels to cells with lower charge levels, achieving energy balance across the entire battery pack.

[0003] During active equalization, the power devices in the energy transfer circuit generate a large amount of heat due to frequent operation. If this heat cannot be dissipated in a timely and effective manner, it will accumulate inside the battery pack, which will not only accelerate the aging of the cells, but also cause thermal damage to the electronic components of the protection board itself, affecting its regulation accuracy and service life, and even causing safety hazards in extreme cases.

[0004] Furthermore, as the core control unit of the battery device, the protection board, which carries the active balancing function, is also a complex electronic component and is prone to failure. In some existing lithium battery structures, the protection board is often deeply fixed by fasteners or integrated inside the battery pack. Its disassembly and assembly process is very cumbersome, requiring the disassembly of the battery casing and multiple connecting components. This results in high maintenance costs and long time consumption once the protection board needs repair or replacement, affecting the continuous availability of the equipment.

[0005] Existing technologies often treat heat dissipation or maintenance issues in isolation, lacking a physical structure that integrates efficient heat dissipation with convenient maintenance. This design deficiency significantly reduces the long-term reliability and maintainability of active balancing functions in practical applications.

[0006] Therefore, this invention proposes an active balancing adjustment structure for lithium batteries to address the shortcomings of existing technologies. Utility Model Content

[0007] In view of the problems in the existing active balancing adjustment structure of lithium battery, such as the complicated and time-consuming operation of the protection board replacement and the difficulty in effectively dissipating the heat generated during active balancing adjustment, which affect the stability and safety of equipment operation, this utility model aims to provide an improved active balancing adjustment structure of lithium battery that can effectively solve the above problems.

[0008] This utility model provides an active balancing adjustment structure for a lithium battery, including a housing, a battery cell and an insulating plate housed inside the housing, a protective plate and a display plate mounted on the upper part of the housing, and a quick-release mechanism and a heat dissipation mechanism disposed on the housing.

[0009] The quick-release mechanism is located on the upper part of the outer shell and covers the protective plate. The quick-release mechanism includes a pressure plate. One end of the pressure plate is rotatably connected to the outer shell via a plate shaft. The other end of the pressure plate is provided with a pressing component for applying downward pressure to the protective plate. The pressing component includes a rod seat fixedly connected to the outer shell, a rotating rod rotatably connected to the rod seat, a pressing block fixedly connected to the rotating rod and abutting against the upper surface of the pressure plate, and a pressing rod rotatably connected to one end of the rotating rod via a connecting shaft. This combination of structures forms an efficient lever pressing and releasing mechanism.

[0010] Furthermore, the heat dissipation mechanism is fixedly connected to the side wall of the casing. The heat dissipation mechanism can actively dissipate heat from the working battery cells and protection board, and together with the quick-release mechanism, it forms a comprehensive physical guarantee for the active equalization adjustment function.

[0011] Preferably, the upper surface of the pressure plate is also provided with a buckle, and the free end of the pressure rod is detachably fastened in the buckle. This design can reliably limit the movement of the pressure rod, prevent it from accidentally loosening under conditions such as equipment vibration, and improve the reliability of the fixation.

[0012] Preferably, the heat dissipation mechanism includes a frame, a heat-dissipating plate, a fan, and an air outlet grille. The frame is fixed to the side wall of the housing as a mounting base, and the heat-dissipating plate is attached to the inner side wall of the housing and connected to the cell for thermal conduction, thus constructing an efficient heat dissipation path from the heat source to the heat dissipation surface.

[0013] Preferably, the fan is installed inside the frame and located outside the heat exchange plate. This position ensures that the fan can generate forced convection air when it is working, so as to directly and efficiently dissipate the heat transferred to the heat exchange plate to the outside.

[0014] Preferably, the air outlet grille is installed on the frame and covers the outside of the fan. The grille structure can not only protect the fan blades from damage during operation, but also effectively prevent foreign objects from entering or operators from accidentally touching them, which greatly improves the safety of equipment operation and maintenance.

[0015] Preferably, insulating plates are stacked between the cells to provide effective electrical isolation between the multiple cells in the battery pack through physical isolation. This is an important structure to ensure the basic electrical safety of the battery pack.

[0016] Preferably, the display panel is electrically connected to the protection board, and the display panel is located on the upper part of the housing and adjacent to the quick-release mechanism. This layout allows users to conveniently and intuitively obtain various data information processed by the protection board during maintenance operations or daily inspections, thus optimizing the human-computer interaction experience.

[0017] Preferably, when the pressure bar is pressed down, the pressure bar will drive the rotating rod to rotate synchronously through the connecting shaft, thereby causing the pressure block fixed on the rotating rod to apply a stable and continuous downward pressure to the pressure plate, ultimately pressing and fixing the protective plate stably, ensuring its working stability under complex working conditions.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting up a quick-release mechanism consisting of a pressure plate and a pressing component, uses a pressure rod to drive the pressure block to apply pressure to the pressure plate to fix the protection plate, or releases the pressure to unlock the protection plate. This solves the problem of complicated, time-consuming and labor-intensive disassembly and replacement of lithium battery protection plates when they fail in the prior art, and achieves the technical effect of quick disassembly and reliable fixation of the protection plate, which significantly improves the maintenance efficiency of the equipment.

[0020] 2. This utility model solves the problem of heat accumulation and poor heat dissipation during the active balancing adjustment of lithium batteries by setting a heat dissipation mechanism consisting of a heat equalizing plate and a fan on the side wall of the battery casing. The heat is conducted to the heat equalizing plate and then forcibly dissipated by the fan. This achieves the technical effect of active and efficient heat dissipation of the battery device, effectively ensuring the safety and stability of the equipment operation and extending its service life.

[0021] 3. This utility model applies continuous downward pressure to the protective plate through the pressing component, which not only achieves reliable mechanical fixation, but also helps to ensure a tight fit between the protective plate and related components, solving the problem of connection failure caused by vibration or poor contact, and achieving the technical effect of enhancing the overall stability and connection reliability of the structure. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of an active balancing adjustment structure for a lithium battery proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the buckle structure of the active balancing adjustment structure for lithium batteries proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the insulating plate of an active balancing adjustment structure for a lithium battery proposed in this utility model.

[0025] Figure 4This is a schematic diagram of the heat-regulating plate of an active balancing adjustment structure for lithium batteries proposed in this utility model.

[0026] Legend:

[0027] 1. Outer shell; 2. Insulating board; 3. Battery cell; 4. Protection board; 5. Display board; 6. Quick release mechanism; 61. Buckle; 62. Pressure plate; 63. Plate shaft; 64. Pressing assembly; 641. Pressure block; 642. Rotating rod; 643. Rod seat; 644. Pressure rod; 645. Connecting shaft; 7. Heat dissipation mechanism; 71. Frame; 72. Heat distribution plate; 73. Air outlet grille; 74. Fan. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example:

[0030] Reference Figures 1 to 4 This utility model provides an active balancing adjustment structure for lithium batteries, which aims to solve the problems of complex and time-consuming replacement of protection boards in existing lithium battery structures, as well as insufficient heat dissipation during active balancing adjustment.

[0031] The lithium battery active balancing adjustment structure includes a housing 1, a battery cell 3, and an insulating plate 2 housed inside the housing 1. The insulating plate 2 is stacked between the battery cells 3 for electrical isolation of the battery cells 3. A protection plate 4 and a display plate 5 are mounted on the upper part of the housing 1. The display plate 5 is electrically connected to the protection plate 4. The display plate 5 is located on the upper part of the housing 1 and adjacent to the quick-release mechanism 6 for displaying data after active balancing adjustment by the protection plate 4. The structure also includes the quick-release mechanism 6 and a heat dissipation mechanism 7. The quick-release mechanism 6 is located on the upper part of the housing 1 and covers the protection plate 4. The heat dissipation mechanism 7 is fixedly connected to the side wall of the housing 1 for heat dissipation of the battery cells 3 and the protection plate 4.

[0032] The quick-release mechanism 6 includes a pressure plate 62, one end of which is rotatably connected to the outer casing 1 via a plate shaft 63. A buckle 61 is also provided on the upper surface of the pressure plate 62. The quick-release mechanism 6 further includes a pressing assembly 64 for applying downward pressure to the protective plate 4. The pressing assembly 64 is located at the other end of the pressure plate 62 and includes a rod seat 643, a rotating rod 642, a pressure block 641, a pressure rod 644, and a connecting shaft 645. The rod seat 643 is fixedly connected to the outer casing 1, and the rotating rod 642 is rotatably connected to the outer casing 1. The pressure block 641 is fixedly connected to the rotating rod 642 and abuts against the upper surface of the pressure plate 62. The pressure rod 644 is rotatably connected to one end of the rotating rod 642 through the connecting shaft 645. The free end of the pressure rod 644 is detachably fastened in the buckle 61 to limit the movement of the pressure rod 644. When the pressure rod 644 is pressed down, the pressure rod 644 drives the rotating rod 642 to rotate, so that the pressure block 641 applies downward pressure to the pressure plate 62, thereby pressing and fixing the protective plate 4.

[0033] The heat dissipation mechanism 7 has a frame 71, which is fixed to the side wall of the outer casing 1. The heat equalization plate 72, fan 74, and air outlet grille 73 are all mounted on the frame 71. The heat equalization plate 72 is attached to the inner side wall of the outer casing 1 and is thermally connected to the battery cell 3. Its function is to quickly receive the heat generated by the battery cell 3 and the protection board 4 during operation and expand the heat dissipation area. The fan 74 is installed inside the frame 71 and located outside the heat equalization plate 72. The fan 74 is used to generate forced convection air to blow the heat on the heat equalization plate 72 outward. The air outlet grille 73 is installed on the frame 71 and covers the outside of the fan 74. This forced air cooling structure, which combines the heat equalization plate 72 and the fan 74, ensures that the heat generated inside the lithium battery can be efficiently and timely discharged during active equalization adjustment, thereby ensuring the temperature stability and safety of the battery cell 3 and the protection board 4 during operation.

[0034] In a preferred embodiment, a buckle 61 is also fixedly provided on the upper surface of the pressure plate 62, and the free end of the pressure rod 644 is adapted to the opening of the buckle 61, so that the pressure rod 644 can be detachably fastened inside the buckle 61.

[0035] In a preferred embodiment, the heat dissipation mechanism 7 specifically includes a frame 71, a heat-diffusing plate 72, a fan 74, and an air outlet grille 73. The frame 71 is fixed to the side wall of the outer casing 1 by bolts or welding, forming the mounting base of the heat dissipation mechanism 7. The heat-diffusing plate 72 is in close contact with the inner side wall of the outer casing 1 and forms a heat conduction connection directly with the outer surface of the battery cell 3. The fan 74 is installed inside the frame 71 by fasteners, and the installation position of the fan 74 is directly opposite the outer side of the heat-diffusing plate 72, ensuring that the airflow generated during operation can fully cover the heat-diffusing plate 72. The heat dissipation surface of the 2, the air outlet grille 73 is installed on the frame 71 by snap-fit ​​or screws, and completely covers the external air inlet and outlet of the fan 74. The insulating plate 2 is a plate-shaped structure with high insulation strength, which is stacked between adjacent battery cells 3 to physically and electrically isolate each battery cell 3. The display board 5 is electrically connected to the protection board 4 through a flexible circuit board. The display board 5 is embedded in the upper surface of the housing 1, and its position is designed next to the quick-release mechanism 6, so that the operator can check the equipment status at the same time when replacing the protection board 4.

[0036] The implementation principle of this application embodiment is as follows: The lithium battery active balancing adjustment structure consists of an insulating plate 2 and a battery cell 3 installed inside the outer casing 1, and a protection plate 4 and a display plate 5 are installed on the upper part of the outer casing 1. The data after active balancing adjustment by the protection plate 4 is displayed on the display plate 5. A quick-release mechanism 6 and a heat dissipation mechanism 7 are installed on the side of the outer casing 1 on the outer side of the protection plate 4 above the outer casing 1.

[0037] The operator first installs the protective plate 4 with the active adjustment structure into the quick-release mechanism 6. When it is necessary to replace the faulty protective plate 4, the operator first removes the pressure rod 644 in the pressing assembly 64 from the buckle 61 installed on the pressure plate 62 by rotating it outward. Then, the operator lifts the pressure rod 644 and the rotating rod 642 connected to it via the connecting shaft 645, causing it to rotate in the rod seat 643. The pressure block 641 installed on the rotating rod 642 rotates synchronously, releasing the downward pressure on the pressure plate 62 and loosening the fixing state of the pressure plate 62 to the protective plate 4, making it easier to replace. The operator then lifts the pressure plate 62, causing it to rotate around the plate shaft 63 installed on the outer casing 1. At this time, the quick-release mechanism 6 opens, allowing the protective plate 4 to be removed. Remove and replace from quick-release mechanism 6. After replacement, lower pressure plate 62 to cover protective plate 4. Then place pressure rod 644 downward. Rotate rod 642 on rod seat 643. Pressure block 641 installed on rotating rod 642 contacts pressure plate 62 and presses pressure rod 644 downward. Pressure block 641 installed on rotating rod 642 applies downward pressure to pressure plate 62, thereby pressing and fixing protective plate 4. Finally, place pressure rod 644 in buckle 61 on pressure plate 62 to restrict the movement of pressure rod 644. This achieves quick disassembly and replacement of faulty protective plate 4 and the downward pressure generated by downward pressing component 64 presses and fixes the protective plate 4 with active equalization adjustment to make it fit more tightly with the equipment.

[0038] During the operation of the lithium battery active balancing equipment, the side heat equalization plate 72 and fan 74 can mitigate the impact of heat generated during operation on the equipment itself and the safety of operators. When the equipment is running, the heat generated is transferred to the heat equalization plate 72, and the fan 74 installed in the frame 71 operates to dissipate the heat conducted to the heat equalization plate 72 behind it. An air outlet grille 73 is provided on the outside of the fan 74, which is installed on the frame 71 and outside of the fan 74 to ensure the safety of the fan 74 during operation. The heat dissipation mechanism 7 thus formed can effectively dissipate the heat generated during equipment operation, reduce the adverse effects of heat on the equipment and the safety of operators, and make the equipment operate efficiently and reliably.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery active balancing adjustment structure, comprising: The housing (1), and the battery cell (3) and insulating plate (2) housed inside the housing (1), also include a protective plate (4) and a display plate (5) mounted on the upper part of the housing (1); Its features include a quick-release mechanism (6) and a heat dissipation mechanism (7); The quick-release mechanism (6) is located on the upper part of the outer shell (1) and covers the protective plate (4). The quick-release mechanism (6) includes a pressure plate (62). One end of the pressure plate (62) is rotatably connected to the outer shell (1) via a plate shaft (63). The other end of the pressure plate (62) is provided with a pressing assembly (64) for applying downward pressure to the protective plate (4). The pressing assembly (64) includes a rod seat (643) and a rotating rod (64). 2) A pressure block (641), a pressure rod (644), and a connecting shaft (645). The rod seat (643) is fixedly connected to the outer shell (1). The rotating rod (642) is rotatably connected to the rod seat (643). The pressure block (641) is fixedly connected to the rotating rod (642) and abuts against the upper surface of the pressure plate (62). The pressure rod (644) is rotatably connected to one end of the rotating rod (642) through the connecting shaft (645).

2. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, The heat dissipation mechanism (7) is fixedly connected to the side wall of the outer casing (1) and is used to dissipate heat from the battery cell (3) and the protection plate (4).

3. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, The upper surface of the pressure plate (62) is also provided with a buckle (61), and the free end of the pressure rod (644) is detachably fastened in the buckle (61) to limit the movement of the pressure rod (644).

4. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, The heat dissipation mechanism (7) includes a frame (71), a heat-equalizing plate (72), a fan (74), and an air outlet grille (73). The frame (71) is fixed to the side wall of the outer shell (1), and the heat-equalizing plate (72) is attached to the inner side wall of the outer shell (1) and thermally connected to the battery cell (3).

5. The active balancing adjustment structure for a lithium battery according to claim 4, characterized in that, The fan (74) is installed inside the frame (71) and located outside the heat-dissipating plate (72). The fan (74) is used to blow the heat on the heat-dissipating plate (72) outward.

6. The active balancing adjustment structure for a lithium battery according to claim 4, characterized in that, The air outlet grille (73) is installed on the frame (71) and covers the outside of the fan (74).

7. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, The insulating plate (2) is stacked between the battery cells (3) to provide electrical isolation for the battery cells (3).

8. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, The display panel (5) is electrically connected to the protection plate (4). The display panel (5) is located on the upper part of the outer casing (1) and adjacent to the quick-release mechanism (6), and is used to display the data after active equalization adjustment by the protection plate (4).

9. The active balancing adjustment structure for a lithium battery according to claim 1, characterized in that, When the pressure rod (644) is pressed down, the pressure rod (644) drives the rotating rod (642) to rotate, so that the pressure block (641) applies downward pressure to the pressure plate (62), thereby pressing and fixing the protective plate (4).

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