Automobile power battery equalization system

Abstract

The application relates to the technical field of automobile power batteries, in particular to an automobile power battery equalization system, which comprises a shell and a cover plate, the top surface of the shell is fixedly connected with the cover plate, and two fixed plates are fixedly connected in the left and right symmetrical inner cavities of the shell. The main shaft, the conductive column, the conductive block, the first spring, the movable plate, the horizontal plate, the first protruding block and the second protruding block are arranged, the first protruding block and the second protruding block are driven to rotate by the main shaft, when the first protruding block pushes the horizontal plate, the conductive block is connected with one of the conductive columns at the moment, at the moment, equalization operation can be realized on the left and right two power battery modules, then the second protruding block pushes the horizontal plate by rotating the main shaft, the other conductive column is connected with the conductive block at the moment, at the moment, equalization operation can be realized on the power battery modules in the inner cavity of the shell, distributed equalization operation is realized, the equalization effect on the power battery is good, and the application has the advantages of convenient use and good equalization effect.

Description

Technical Field

[0001] This invention relates to a power battery balancing system, specifically a vehicle power battery balancing system. Background Technology

[0002] As one of the three major components of an electric vehicle (battery, motor, and electronic control), the power battery is the power source of the entire vehicle system and has long been regarded as a landmark technology in the development of electric vehicles. Its performance directly affects the vehicle's driving range, and its importance is self-evident. The development of new energy sources and electric vehicles will both utilize lithium batteries with higher energy density. In the process of using lithium batteries in series, a voltage balancing system is inevitably used to ensure the consistency of battery voltage.

[0003] Currently, existing automotive battery balancing systems require the vehicle's battery to be opened during use, and operators must then connect the battery to the system using numerous wires. This type of system is highly complex and time-consuming, reducing balancing efficiency. Furthermore, current systems perform simultaneous balancing on all battery modules, further complicating the process and hindering effective balancing. Therefore, this invention proposes an automotive battery balancing system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automotive power battery balancing system.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A vehicle power battery balancing system includes a housing, a cover plate fixedly connected to the top surface of the housing, two fixing plates symmetrically fixedly connected to the left and right sides of the inner cavity of the housing, a plurality of partitions evenly distributed and fixedly connected to the sidewalls of the two fixing plates on the side furthest from each other, the partitions being fixedly connected to the inner wall of the housing, power battery modules being arranged on both sides of the partitions, electrode posts being arranged on the top surface of the power battery modules, and a main shaft being arranged between the two fixing plates, the main shaft being movably connected to the housing. As a preferred embodiment of the present invention, a plurality of first protrusions and second protrusions are uniformly distributed and fixedly connected on the side wall of the main shaft. A plurality of movable plates are uniformly distributed and movably connected on the two fixed plates. A movable groove is formed on the side wall of the movable plate near the main shaft. A horizontal plate is movably connected in the movable groove. One side of the horizontal plate extends out of the movable groove and is in close contact with the side wall of the main shaft. A first spring is fixedly connected to the other side of the horizontal plate. The other end of the first spring is fixedly connected to the inner wall of the movable groove. A conductive block is movably connected to the top surface of the horizontal plate. A plurality of conductive posts are uniformly distributed and fixedly connected to the top surface of the movable plate. The bottom end of the conductive posts extends into the movable groove. An equalization module is fixedly connected to the inner cavity of the outer shell between the two fixed plates. A clamping mechanism is provided on the side of the movable plate away from the main shaft through the fixed plate. A driving mechanism is provided on the side wall of the main shaft.

[0006] As a preferred embodiment of the present invention, the clamping mechanism includes a side plate, which is fixedly connected to a movable plate. Two sliding grooves are symmetrically formed on the side wall of the side plate away from the movable plate. A slider is movably connected in each sliding groove. A clamping plate is fixedly connected to the side wall of the slider. A second spring is fixedly connected to the inner wall of the sliding groove. The other end of the second spring is fixedly connected to the side wall of the slider. The clamping plate is inclined on the side away from the side plate, and an arc-shaped groove is formed on the side wall of the clamping plate facing each other.

[0007] As a preferred embodiment of the present invention, the driving mechanism includes a motor, the motor is fixedly connected to the bottom surface of the inner cavity of the housing between two fixed plates, a rotating shaft is fixedly connected to the rotor of the motor, a pulley is fixedly connected to the side wall of the rotating shaft, another pulley is fixedly connected to the side wall of the main shaft, and the same belt is fitted on the two pulleys.

[0008] As a preferred embodiment of the present invention, two of the first protrusion and two of the second protrusion are respectively provided on the same cross section of the movable plate, and the two first protrusions are symmetrically arranged and the two second protrusions are symmetrically arranged.

[0009] As a preferred embodiment of the present invention, the sidewalls of the first protrusion and the second protrusion are both arc-shaped, and the height of the second protrusion is greater than the height of the first protrusion.

[0010] As a preferred embodiment of the present invention, a plate is fixedly connected to both the front and rear side walls of the movable plate, and a third spring is fixedly connected to the side wall of each plate, with the end of the third spring away from the plate being fixedly connected to the fixed plate.

[0011] As a preferred embodiment of the present invention, a circular groove is provided on the top surface of the horizontal plate, the conductive block is cylindrical and inserted into the circular groove, and a fourth spring is fixedly connected to the bottom surface of the circular groove, the other end of the fourth spring being fixedly connected to the bottom surface of the conductive block.

[0012] As a preferred embodiment of the present invention, the sidewall of the horizontal plate away from the first spring is arranged in an arc shape.

[0013] This invention provides an automotive power battery balancing system, which has the following beneficial effects: This invention, by setting up a main shaft, a clamping mechanism and a driving mechanism, allows for easy equalization of automotive power batteries. When performing equalization operations, only the motor on the driving mechanism needs to be driven to rotate the main shaft, which enables the clamping mechanism to clamp the electrode posts on the automotive power battery module, thus connecting the power battery module and the equalization system. This eliminates the need to disassemble the automotive power battery or perform manual wiring operations, making the equalization operation of automotive power batteries convenient. This invention comprises a main shaft, conductive posts, conductive blocks, a first spring, a movable plate, a horizontal plate, a first protrusion, and a second protrusion. The main shaft drives the first and second protrusions to rotate. When the first protrusion pushes the horizontal plate, the conductive block connects with one of the conductive posts, enabling a balancing operation on the left and right power battery modules. Then, by rotating the main shaft, the second protrusion pushes the horizontal plate, connecting the other conductive post with the conductive block, thus enabling a balancing operation on the power battery modules inside the casing. This achieves a balanced distribution and results in a good balancing effect for the power batteries. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure of an automotive power battery balancing system according to the present invention; Figure 2 This is a three-dimensional structural diagram of the internal structure of the outer shell of an automotive power battery balancing system according to the present invention; Figure 3 This is a cross-sectional three-dimensional structural diagram of an automotive power battery balancing system according to the present invention; Figure 4 This is a three-dimensional structural diagram of a vehicle power battery balancing system at one angle on the main axis according to the present invention. Figure 5 This is a three-dimensional structural diagram of the main axis of the automotive power battery balancing system of the present invention from another angle; Figure 6This is a three-dimensional cross-sectional structural diagram of the main shaft of an automotive power battery balancing system according to the present invention. Figure 7 This is a three-dimensional cross-sectional structural diagram of the movable plate and the horizontal plate of the automotive power battery balancing system of the present invention. Figure 8 This is a three-dimensional structural schematic diagram of the clamping mechanism of an automotive power battery balancing system according to the present invention. Figure 9 This is a schematic diagram of the balancing circuit structure of an automotive power battery balancing system according to the present invention.

[0015] In the diagram: 1. Outer shell; 2. Cover plate; 3. Fixing plate; 4. Partition plate; 5. Power battery module; 6. Main shaft; 7. First protrusion; 8. Second protrusion; 9. Movable plate; 10. Movable groove; 11. Horizontal plate; 12. First spring; 13. Conductive post; 14. Side plate; 15. Slide groove; 16. Slider; 17. Clamping plate; 18. Second spring; 19. Arc groove; 20. Motor; 21. Rotating shaft; 22. Pulley; 23. Belt; 24. Flat plate; 25. Third spring; 26. Circular groove; 27. Fourth spring; 28. Electrode post; 29. ​​Equalization module; 30. Conductive block. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figure 1-9As shown, an automotive power battery balancing system includes a housing 1. A cover plate 2 is fixedly connected to the top surface of the housing 1. Two fixed plates 3 are symmetrically fixedly connected to the inner cavity of the housing 1. A plurality of partitions 4 are evenly distributed and fixedly connected to the side wall of the two fixed plates 3 on the side away from each other. The partitions 4 are fixedly connected to the inner wall of the housing 1. Power battery modules 5 are arranged on both sides of the partitions 4. Electrode posts 28 are arranged on the top surface of the power battery modules 5. A main shaft 6 is arranged between the two fixed plates 3. The main shaft 6 is movably connected to the housing 1. A plurality of first protrusions 7 and second protrusions 8 are evenly distributed and fixedly connected to the side wall of the main shaft 6. A plurality of movable plates 9 are evenly distributed and movably connected to the two fixed plates 3. The movable plates 9 are close to the main shaft. A movable groove 10 is provided on one side wall of the main shaft 6. A horizontal plate 11 is movably connected in the movable groove 10. The movable groove 10 extends out from one side of the horizontal plate 11 and is in close contact with the side wall of the main shaft 6. A first spring 12 is fixedly connected to the other side of the horizontal plate 11. The other end of the first spring 12 is fixedly connected to the inner wall of the movable groove 10. A conductive block 30 is movably connected to the top surface of the horizontal plate 11. Several conductive posts 13 are evenly distributed and fixedly connected to the top surface of the movable plate 9. The bottom end of the conductive posts 13 extends into the movable groove 10. An equalization module 29 is fixedly connected to the inner cavity of the outer shell 1 between two fixed plates 3. This allows for the equalization operation of the power battery module 5 inside the vehicle power battery without disassembling the vehicle power battery, making it convenient to use.

[0018] The balancing module 29 utilizes bypass resistors and switches across each cell in the battery pack to implement passive balancing hardware. The balancing resistors are generally used in one of two ways: The resistor can be used to direct charging current around the battery, allowing batteries with a lower state of charge (SOC) to maintain a higher charging rate without overcharging and damaging batteries with a high SOC. Alternatively, the resistor can be used to discharge excess charge from batteries with a higher SOC, thus balancing these batteries with those with a lower SOC.

[0019] Among them, there are two first protrusions 7 and two second protrusions 8 on the same cross section of the movable plate 9, and the two first protrusions 7 are symmetrically arranged, the two second protrusions 8 are symmetrically arranged, the side walls of the first protrusions 7 and the second protrusions 8 are both arc-shaped, and the height of the second protrusion 8 is greater than the height of the first protrusion 7, which facilitates the step-by-step balanced operation of the core of the power battery module 5. Among them, the front and rear side walls of the movable plate 9 are fixedly connected to the plate 24, and the side wall of the plate 24 is fixedly connected to the third spring 25. The end of the third spring 25 away from the plate 24 is fixedly connected to the fixed plate 3, which facilitates the movement and reset of the movable plate 9 and reduces the impact on the use of the power battery module 5 when balancing operation is not performed. Among them, a circular groove 26 is provided on the top surface of the horizontal plate 11, the conductive block 30 is cylindrical and inserted into the circular groove 26, and a fourth spring 27 is fixedly connected to the bottom surface of the circular groove 26. The other end of the fourth spring 27 is fixedly connected to the bottom surface of the conductive block 30, which can ensure the connection between the conductive block 30 and the conductive post 13. The side wall of the horizontal plate 11 away from the first spring 12 is arc-shaped to facilitate contact between the horizontal plate 11 and the first protrusion 7 and the second protrusion 8. The movable plate 9, on the side away from the main shaft 6, passes through the fixed plate 3 and is equipped with a clamping mechanism. The clamping mechanism includes a side plate 14, which is fixedly connected to the movable plate 9. Two sliding grooves 15 are symmetrically opened on the side wall of the side plate 14 away from the movable plate 9. A slider 16 is movably connected in each of the sliding grooves 15. A clamping plate 17 is fixedly connected to the side wall of the slider 16. A second spring 18 is fixedly connected to the inner wall of the sliding groove 15. The other end of the second spring 18 is fixedly connected to the side wall of the slider 16. The clamping plate 17 is inclined on the side away from the side plate 14, and an arc-shaped groove 19 is opened on the side wall of the opposite side of the clamping plate 17. This can clamp the electrode post 30 and facilitate balanced power supply. A drive mechanism is provided on the side wall of the main shaft 6. The drive mechanism includes a motor 20. The motor 20 is fixedly connected to the bottom surface of the inner cavity of the outer shell 1 between two fixed plates 3. A rotating shaft 21 is fixedly connected to the rotor of the motor 20. A pulley 22 is fixedly connected to the side wall of the rotating shaft 21. Another pulley 22 is fixedly connected to the side wall of the main shaft 6. The same belt 23 is fitted on the two pulleys 22, which can realize the drive operation of the main shaft 6, thereby realizing the convenient operation of balancing the power battery and reducing the disassembly and wiring operations of the car power battery.

[0020] Working principle: During installation, this invention, such as... Figure 9As shown, the conductive posts 13 on the top surface of the movable plate 9 are connected to the wiring, and the other end of the wiring is connected to the equalization module 29. The conductive posts 13 on the left and right sides near the main shaft 6 are respectively in one path, and all the conductive posts 13 on the side away from the main shaft 6 are in one path. Then, the top surface of the outer shell 1 is sealed by the cover plate 2. When the power battery needs to be balanced, the motor 20 and the equalization module 29 inside the device are remotely operated by an external device. The motor 20 drives the pulley 22 to rotate through the shaft 21. The pulley 22 drives another pulley 22 on the side wall of the main shaft 6 to rotate through the belt 23, rotating the main shaft 6 by a certain angle. At this time, the first protrusion 7 on the side wall of the main shaft 6 pushes the horizontal plate 11. The horizontal plate 11 drives the movable plate 9 to move, and the flat plate 24 on the movable plate 9 moves, so that the flat plate 24 compresses the third spring 25 to its limit. At this time, the side plate 14 on the movable plate 8 moves to the electrode post 28 of the power battery module 5. Under the action of the two second springs 18, the second plate 14 moves to the electrode post 28 of the power battery module 5. Clamping plate 17 clamps electrode post 28, while horizontal plate 11 moves within movable groove 10. Under the action of fourth spring 27, conductive block 30 is pressed tightly against conductive post 13 on the side near main shaft 6. At this time, balancing operation can be performed on two adjacent power battery modules 5 through balancing module 29. After balancing is completed, main shaft 6 is rotated. At this time, second cam 8 pushes horizontal plate 11, so that another conductive post 13 is connected to conductive block 30. At this time, balancing operation can be performed on all power battery modules 295 inside the outer shell 1 through balancing module 29. By performing balancing operation on power battery modules 5 in steps, the balancing operation of power battery is convenient and effective.

[0021] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A vehicle power battery balancing system, comprising a housing (1), characterized in that, A cover plate (2) is fixedly connected to the top surface of the outer shell (1). Two fixed plates (3) are fixedly connected symmetrically to the inner cavity of the outer shell (1). Several partitions (4) are evenly distributed and fixedly connected to the side wall of the two fixed plates (3) on the side away from each other. The partitions (4) are fixedly connected to the inner wall of the outer shell (1). Power battery modules (5) are provided on both sides of the partitions (4). Electrode posts (28) are provided on the top surface of the power battery modules (5). A main shaft (6) is provided between the two fixed plates (3). The main shaft (6) is movably connected to the outer shell (1). A plurality of first protrusions (7) and second protrusions (8) are evenly distributed and fixedly connected on the side wall of the main shaft (6). A plurality of movable plates (9) are evenly distributed and movably connected on the two fixed plates (3). A movable groove (10) is provided on the side wall of the movable plate (9) near the main shaft (6). A horizontal plate (11) is movably connected in the movable groove (10). The movable groove (10) extends out of one side of the horizontal plate (11) and is in close contact with the side wall of the main shaft (6). A first spring (12) is fixedly connected to the other side of the horizontal plate (11). 2) The other end is fixedly connected to the inner wall of the movable groove (10). A conductive block (30) is movably connected to the top surface of the horizontal plate (11). Several conductive pillars (13) are evenly distributed and fixedly connected to the top surface of the movable plate (9). The bottom end of the conductive pillar (13) extends into the movable groove (10). A balancing module (29) is fixedly connected between two fixed plates (3) in the inner cavity of the outer shell (1). The movable plate (9) is connected to the fixed plate (3) on the side away from the main shaft (6) and is provided with a clamping mechanism. A driving mechanism is provided on the side wall of the main shaft (6).

2. The automotive power battery balancing system according to claim 1, characterized in that, The clamping mechanism includes a side plate (14), which is fixedly connected to the movable plate (9). Two sliding grooves (15) are symmetrically opened on the side wall of the side plate (14) away from the movable plate (9). A slider (16) is movably connected in each of the sliding grooves (15). A clamping plate (17) is fixedly connected to the side wall of the slider (16). A second spring (18) is fixedly connected to the inner wall of the sliding groove (15). The other end of the second spring (18) is fixedly connected to the side wall of the slider (16). The clamping plate (17) is inclined on the side away from the side plate (14), and an arc-shaped groove (19) is opened on the side wall of the clamping plate (17) facing each other.

3. The automotive power battery balancing system according to claim 1, characterized in that, The drive mechanism includes a motor (20). The bottom surface of the inner cavity of the outer shell (1) is fixedly connected to the motor (20) between two fixed plates (3). A rotating shaft (21) is fixedly connected to the rotor of the motor (20). A pulley (22) is fixedly connected to the side wall of the rotating shaft (21). Another pulley (22) is fixedly connected to the side wall of the main shaft (6). The same belt (23) is fitted on the two pulleys (22).

4. The automotive power battery balancing system according to claim 1, characterized in that, The first protrusion (7) and the second protrusion (8) are provided in two on the same cross section of the movable plate (9), and the two first protrusions (7) are symmetrically arranged, and the two second protrusions (8) are symmetrically arranged.

5. The automotive power battery balancing system according to claim 1, characterized in that, The sidewalls of the first protrusion (7) and the second protrusion (8) are both arc-shaped, and the height of the second protrusion (8) is greater than the height of the first protrusion (7).

6. The automotive power battery balancing system according to claim 1, characterized in that, The movable plate (9) is fixedly connected to the front and rear side walls with a plate (24), and a third spring (25) is fixedly connected to the side wall of the plate (24). The end of the third spring (25) away from the plate (24) is fixedly connected to the fixed plate (3).

7. The automotive power battery balancing system according to claim 1, characterized in that, A circular groove (26) is provided on the top surface of the horizontal plate (11). The conductive block (30) is cylindrical and inserted into the circular groove (26). A fourth spring (27) is fixedly connected to the bottom surface of the circular groove (26). The other end of the fourth spring (27) is fixedly connected to the bottom surface of the conductive block (30).

8. The automotive power battery balancing system according to claim 7, characterized in that, The sidewall of the horizontal plate (11) away from the first spring (12) is arc-shaped.

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