New energy charging pile based on battery state real-time adjustment

Abstract

The invention discloses a new energy charging pile based on battery state real-time adjustment applied to the field of new energy charging piles, dynamic adjustment of a power module is achieved through a deformation assembly and a power assembly, during charging, when a battery management system in an automobile feeds back that charging power needs to be increased, a rotating motor drives a lead screw to drive a moving block to move upwards, and the moving block moves upwards; a small electric push rod is contracted to enable a folding piece to deform, a back plate is pushed to incline to form an asymmetric V-shaped structure, air flows of an upper cooling fan and a lower cooling fan form front face direct hedging with the corresponding power modules, static hot air layers on the surfaces of the power modules are damaged, the local heat exchange coefficient is increased, and the heat dissipation effect is enhanced; meanwhile, the gaps between the multiple power modules in the folded arrangement state and the rear wall of the pile body are enlarged, the heat dissipation contact area is enlarged, compared with a traditional fixed installation mode, the heat dissipation strategy can be actively adjusted in real time according to the battery state, targeted intervention is conducted before temperature rise occurs, temperature rise is effectively restrained, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of new energy charging piles, and in particular to a new energy charging pile based on real-time adjustment of battery status. Background Technology

[0002] With the development of new energy technologies, the application of charging piles has gradually been promoted. Charging piles with built-in circuit breakers, fuses and power modules will interact with the car's BMS system during charging, and then adjust the charging power in real time according to the temperature and health status of the car battery. According to the battery status feedback, the charging current is large during charging, especially during fast charging, and the heat dissipation demand of the charging pile is increased. It is necessary to carry out heat dissipation treatment of the charging pile to ensure that the charging operation is normal.

[0003] The prior art CN202411707473.5 discloses a charging pile that can improve heat dissipation. By setting a wind direction adjustment mechanism, the outflow angle of the airflow is adjusted to ensure that the airflow can flow through all corners inside the charging pile body, thereby ensuring the heat dissipation effect.

[0004] The prior art CN202510867123.3 discloses a charging pile heat dissipation structure with adjustable air intake. By rotating the handle, the transmission worm gear is driven to rotate, which in turn causes the adjusting louver rod to rotate. The remaining louver rods are rotated simultaneously through the pulley and transmission belt, so that the angle of the louvers can be adjusted. While ensuring heat dissipation, it can save energy and reduce the maintenance frequency of the filter.

[0005] In the aforementioned existing technologies, airflow guidance is achieved either by swinging the air inlet or by adjusting the opening area of ​​the air outlet to regulate air cooling efficiency. However, the fan installation position of existing charging piles is fixed, and the airflow path is singular, allowing only overall heat exchange to the internal electrical structure. When localized high temperatures occur, this heat dissipation method has limited efficiency and is difficult to achieve efficient and targeted cooling. Summary of the Invention

[0006] The core of this invention lies in the dynamic adjustment of the power module through deformable and power components. This mechanism can proactively adjust the module layout before temperature rise occurs, based on the real-time state of the battery, ensuring that airflow directly confronts the heat source. This achieves targeted and rapid heat dissipation, effectively solving the problems of traditional charging piles' single airflow and weak heat dissipation targeting. Simultaneously, through the coordinated control of the electric extension rod and the connecting rod, it overcomes the deficiency of the centrally located module in achieving targeted heat dissipation, realizing differentiated and precise heat dissipation for multiple modules, further optimizing the thermal management efficiency of the charging pile.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A new energy charging pile based on real-time battery status adjustment includes a pile body, a charging gun installed on one side surface of the pile body, cooling fans installed on the inner top and bottom walls of the pile body, a deformable component installed on the rear wall of the pile body, and the vertical projection of the cooling fan is located in front of the deformable component. The deformable component includes a lead screw rotatably mounted on the bottom wall of the pile body. Multiple back plates arranged vertically are installed on the inner wall of the pile body, and a power module is installed on the front of each back plate. The surfaces of the upper and lower back plates are connected to a rotating shaft through a bracket. A bottom-supporting rotating rod located in front of the lead screw is rotatably mounted on the inner wall of the pile body, and the bottom of the lowermost back plate is connected to the surface of the bottom-supporting rotating rod through a connecting rod. A winding rod is rotatably mounted on the inner wall of the pile body, and multiple winding cables with their tail ends connected to the surface of the uppermost back plate are wound around the surface of the winding rod. A power component located between the rear wall of the pile body and the back plate is connected to the surface of the lead screw.

[0009] Furthermore, the power assembly includes a movable block threaded onto the surface of the lead screw, a small electric actuator mounted on the top of the movable block, a follower block connected to the power end of the small electric actuator, and a through hole with a diameter larger than that of the lead screw inside the follower block. A folding piece located between the back plate and the small electric actuator is installed between the follower block and the movable block.

[0010] Furthermore, the surfaces of the follower block and the moving block that are close to each other are equipped with rotating shafts, and the folding component includes two upright plates connected by shafts, with the tail ends of the two upright plates respectively connected to the surfaces of the two rotating shafts.

[0011] Furthermore, a rotary motor is installed on the inner wall of the pile, and a round rod is connected to the output end of the rotary motor. The round rod and the lead screw are connected by a conveyor belt near the top. A drive motor is installed on the inner wall of the pile, and its output end is connected to the end of the winding rod.

[0012] Furthermore, the drive motor and the rotary motor are arranged vertically, with the drive motor located in front of the rotary motor and the conveyor belt located above the winding rod.

[0013] Furthermore, the inner wall of the pile is equipped with guide rods arranged symmetrically with the lead screw. The surface of the guide rods is slidably connected to a slider, and the surface of the slider is connected to the surface of the moving block through a long rod.

[0014] Preferably, the replacement structure of the bracket is an adjustment unit, which includes electric extension rods installed at the bottom of the uppermost back plate and the top of other back plates, wherein the power end of the uppermost electric extension rod is connected to the surface of the uppermost rotating shaft rod, and the power end of the lowermost electric extension rod is connected to the surface of the lowermost rotating shaft rod.

[0015] Furthermore, the adjustment unit also includes a connecting rod installed at the bottom of the back plate in the middle position, and the tail end of the connecting rod is connected to the surface of the nearest rotating shaft rod below.

[0016] Compared with the prior art, the advantages of this invention are: (1) This solution achieves dynamic adjustment of the power module through deformable components and power components. When the battery management system in the car reports that the charging power needs to be increased, the rotating motor drives the lead screw to move the moving block upward. In conjunction with the small electric push rod, the folding part is deformed and the back plate is tilted to form an asymmetrical V-shaped structure. At this time, the airflow of the upper and lower cooling fans directly impacts the corresponding power module, destroying the static hot air layer on the surface of the power module, increasing the local heat transfer coefficient, and enhancing the heat dissipation effect. At the same time, the gap between the multiple power modules in the folded arrangement and the rear wall of the pile increases, expanding the heat dissipation contact area. Compared with the traditional fixed installation method, the heat dissipation strategy can be adjusted in real time and actively according to the battery status, and targeted intervention can be carried out before the temperature rise occurs, thereby effectively suppressing the temperature rise and improving the heat dissipation efficiency.

[0017] (2) This solution enables the power module in the middle position to switch from an inclined state to a horizontal position through the coordinated control of the electric extension rod and the connecting rod. When the power component drives the lower back plate to tilt, the three electric extension rods extend precisely and release in coordination with the cable. With the help of the tilt sensor, the middle power module is kept horizontal, so that the airflow of the cooling fan above can directly hit the surface of the middle module. This effectively improves the problem of heat dissipation difficulty of the middle module, realizes differentiated and precise heat dissipation of multiple modules, and further optimizes the overall thermal management performance of the charging pile. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the pile body of the present invention; Figure 3 For the present invention Figure 2 Enlarged diagram of point A in the diagram; Figure 4 This is a schematic diagram of the structure of the back plate and power assembly inside the pile body of the present invention; Figure 5 This is a front view of the deformable component and the power component of the present invention; Figure 6 For the present invention Figure 5 Enlarged diagram of point B in the diagram; Figure 7 This is a schematic diagram of the state in which the deformable component and the power component cooperate to fold multiple power modules into a V-shaped structure, forming a counter-cooling state with the upper and lower cooling fans. Figure 8 This is a schematic diagram of the structure of the electric extension rod and connecting rod of the present invention; Figure 9 For the present invention Figure 8 Enlarged diagram of point D in the diagram; Figure 10 This is a schematic diagram showing the power module in the middle position of the present invention being placed horizontally, forming a counter-cooling effect with the cooling fan above.

[0019] Explanation of the labels in the diagram: 1. Pile body; 2. Charging gun; 3. Cooling fan; 4. Drive motor; 5. Winding cable; 6. Power module; 7. Deformation component; 71. Lead screw; 72. Back plate; 73. Bottom support rod; 74. Rotating shaft rod; 75. Power component; 751. Moving block; 752. Small electric actuator; 753. Folding part; 754. Follower block; 8. Rotating motor; 9. Conveyor belt; 10. Electric extension rod; 11. Connecting rod. Detailed Implementation

[0020] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Example 1:

[0022] Please see Figures 1-5 A new energy charging pile based on real-time battery status adjustment includes a pile body 1, a charging gun 2 installed on one side surface of the pile body 1, cooling fans 3 installed on the inner top and bottom walls of the pile body 1, a deformable component 7 installed on the rear wall of the pile body 1, and the vertical projection of the cooling fans 3 is located in front of the deformable component 7. The deformable component 7 includes a lead screw 71 rotatably mounted on the bottom wall of the pile body 1, and multiple vertically arranged back plates 72 are installed on the inner wall of the pile body 1, with a charging gun 2 installed on the front of each back plate 72. The power module 6 has a rotating shaft 74 connected to the surfaces of the upper and lower back plates 72 via a bracket. The inner wall of the pile body 1 is rotatably mounted with a bottom-supporting rotating rod 73 located in front of the lead screw 71. The bottom of the lowermost back plate 72 is connected to the surface of the bottom-supporting rotating rod 73 via a connecting rod. The inner wall of the pile body 1 is rotatably mounted with a winding rod. The surface of the winding rod is wrapped with multiple winding cables 5 whose tail ends are connected to the surface of the uppermost back plate 72. The surface of the lead screw 71 is connected to a power assembly 75 located between the rear wall of the pile body 1 and the back plate 72.

[0023] Please see Figures 5-6 The power assembly 75 includes a movable block 751 threadedly connected to the surface of the lead screw 71. A small electric actuator 752 is mounted on the top of the movable block 751. The power end of the small electric actuator 752 is connected to a follower block 754. The follower block 754 has a through hole with a diameter larger than that of the lead screw 71. A folding piece 753 is installed between the follower block 754 and the movable block 751. The folding piece 753 is located between the back plate 72 and the small electric actuator 752.

[0024] Please see Figure 6The surfaces of the follower block 754 and the moving block 751 that are close to each other are mounted with rotating shafts. The folding member 753 includes two upright plates connected by shafts, and the tail ends of the two upright plates are respectively connected to the surfaces of the two rotating shafts.

[0025] Please see Figures 2-3 A rotary motor 8 is installed on the inner wall of the pile body 1, and a round rod is connected to the output end of the rotary motor 8. The round rod and the top of the lead screw 71 are connected by a conveyor belt 9. A drive motor 4 is installed on the inner wall of the pile body 1, and the output end is connected to the end of the winding rod. The drive motor 4 and the rotary motor 8 are arranged perpendicularly, and the drive motor 4 is located in front of the rotary motor 8. The conveyor belt 9 is located above the winding rod.

[0026] Please see Figure 4 The inner wall of the pile body 1 is equipped with guide rods arranged symmetrically with the lead screw 71. The surface of the guide rods is slidably connected to a slider, and the surface of the slider is connected to the surface of the moving block 751 through a long rod.

[0027] Specifically, when providing charging services for new energy vehicles, the charging gun 2 on the surface of the charging pile 1 is inserted into the charging port on the surface of the car. Then, the charging status of the battery is fed back in real time by the BMS (Battery Management System) carried by the car itself. This serves as the basis for the charging gun 2 to adjust the output charging power in real time. For example, if the car battery needs to be kept in a fast charging state, the output current of the charging gun 2 is kept at a large level. When the car battery temperature rises during charging, the output current of the charging gun 2 needs to be reduced in order to protect the battery.

[0028] During the charging process, the power module 6, including the power module, DC fuse, input circuit breaker and power conversion structure (or relay, residual current protection device, metering chip, etc.) installed in the pile body 1, needs to dissipate heat. At this time, when the airflow provided by the two cooling fans 3 enters the pile body 1 for heat dissipation, it is in a large-area convection state, and its heat dissipation area is large, which makes it difficult to achieve a rapid heat dissipation effect on the power module 6 arranged vertically.

[0029] Please see Figure 7To achieve active and targeted heat dissipation, a temperature sensor can be installed on the surface of each backplate 72 to monitor the temperature of the power module 6 on the surface of each backplate 72. This temperature is used as the basis for adjusting the position of the inflection point of the deformable component 7 when switching to a V-shaped structure. Taking the folded position above the bottom backplate 72 as an example, when the car's BMS is about to increase the charging power from 50kW to 120kW, the deformable component 7 is activated simultaneously. That is, the rotating motor 8 drives the lead screw 71 to rotate, which in turn drives the moving block 751 to move up along the surface of the lead screw 71. After moving to the position below the bottom backplate 72, the rotating motor 8 stops, and the small electric push rod 752 retracts, causing the follower block 754 to move down, so that the folding part 753 switches from the initial vertical state to a V-shaped folded state. The outward protrusion of the folding part 753 is located on the surface of the bottom backplate 72. Therefore, when the folding part 753 folds and deforms... The bottom backplate 72 can be tilted, and the drive motor 4 rotates in the opposite direction to release the winding cable 5, allowing the top backplate 72 to deform smoothly (during this process, it is necessary to ensure that the winding cable 5 is in a straight state. A tension sensor can be used to assist the drive motor 4 in winding adjustment, so that the winding cable 5 can exert a suitable traction and tension effect on the top power module 6. The tension sensor is existing technology and will not be described in detail here. The model is selected as needed and is not fixed). This allows multiple power modules 6 to form a design with an asymmetrical V-shaped cross-section. At this time, the bottom power module 6 and the airflow sent into the pile body 1 by the lower cooling fan 3 form a frontal collision effect, and the two upper power modules 6 and the airflow sent into the pile body 1 by the upper cooling fan 3 form a collision treatment, which can form a fixed-point heat dissipation effect. In this way, the heat dissipation preparation can more effectively suppress the temperature rise before the heat rises, and better protect the power module 6.

[0030] During counter-current heat dissipation, when the airflow moves to the surface of the power module 6 for heat exchange, the path is smaller in the larger area convection mode, so it moves to the surface of the power module 6 at a higher flow rate, breaking the static hot air layer on the surface of the power module 6, increasing the local heat transfer coefficient, and the heat dissipation effect is faster than that of the larger area convection mode heat exchange, enabling targeted and rapid heat dissipation treatment.

[0031] In addition, after the power component 75 drives the multiple power modules 6 to change their installation state, the gap between the power modules 6 and the rear wall of the charging pile 1 is increased, which increases the effective heat dissipation contact area of ​​the power modules 6. Compared with the method of introducing air cooling airflow to dissipate heat from the power modules 6 fixedly installed in the charging pile (the power modules 6 are generally fixedly installed on the rear wall of the charging pile, and their air cooling heat dissipation only exchanges heat to the front of the power modules 6, so the heat dissipation effect of the power modules 6 is limited), there is a significant improvement in efficiency.

[0032] Example 2:

[0033] Please see Figures 8-9 The replacement structure of the bracket is an adjustment unit, which includes an electric extension rod 10 installed at the bottom of the uppermost back plate 72 and the top of the other back plates 72. The power end of the uppermost electric extension rod 10 is connected to the surface of the uppermost rotating shaft 74, and the power end of the lowermost electric extension rod 10 is connected to the surface of the lowermost rotating shaft 74.

[0034] The adjustment unit also includes a connecting rod 11 installed at the bottom of the back plate 72 in the middle position, and the tail end of the connecting rod 11 is connected to the surface of the nearest lower rotating shaft 74.

[0035] Specifically, in Embodiment 1, the power module 6 located in the center is difficult to achieve a direct confrontation cooling effect with the airflow provided by the cooling fan 3. In this case, this embodiment can be used for improvement.

[0036] Based on Example 1, three of the brackets are replaced with electric extension rods 10, and the remaining bracket is replaced with connecting rods 11. This allows the power module 6 in the middle position to be switched to a horizontal counter-current mode to receive direct counter-current targeted heat dissipation from the cooling fan 3 above.

[0037] Please see Figure 10 When it is necessary to switch the middle power module 6 to a horizontal position, the operation method in Embodiment 1 can be used to tilt the bottom back plate 72 and the surface power module 6 using the power component 75, while extending the three electric extension rods 10, and using the drive motor 4 to release the winding cable 5. To ensure the horizontal state of the middle power module 6, an angle sensor can be installed on the surface of the back plate 72 in the middle position. The angle sensor is used to adjust the extension length of the three electric extension rods 10 and the release degree of the winding cable 5 until the middle power module 6 is switched to a horizontal state, the top power module 6 is in a vertical position, and the bottom power module 6 is in an inclined state. During this process, the extension of the centrally arranged electric extension rod 10 can prevent interference between the top power module 6 and the middle power module 6.

[0038] Through the above adjustments, the power module 6 in the middle position can be placed horizontally, which can directly counteract the airflow blown out by the cooling fan 3 above, thereby providing targeted heat dissipation for the power module 6 in the middle position.

[0039] Finally, the working principles of the small electric actuator 752, electric extension rod 10, rotary motor 8 and drive motor 4 in this application are all existing technologies and will not be elaborated here. Their working models are selected according to actual needs and are not fixed.

[0040] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A new energy charging pile based on real-time battery state adjustment, comprising a pile body (1), wherein a charging gun (2) is mounted on one side surface of the pile body (1), characterized in that: Cooling fans (3) are installed on the inner top and bottom walls of the pile body (1). A deformable assembly (7) is installed on the rear wall of the pile body (1), and the vertical projection of the cooling fan (3) is located in front of the deformable assembly (7). The deformable assembly (7) includes a lead screw (71) rotatably mounted on the bottom wall of the pile body (1). Multiple vertically arranged back plates (72) are installed on the inner wall of the pile body (1), and a power module (6) is installed on the front of each back plate (72). The surfaces of the upper and lower back plates (72) are connected by a power module (6). The bracket is connected to a rotating shaft (74). The inner wall of the pile body (1) is rotatably installed with a bottom-supporting rotating rod (73) located in front of the screw (71). The bottom of the lowest back plate (72) is connected to the surface of the bottom-supporting rotating rod (73) through a connecting rod. The inner wall of the pile body (1) is rotatably installed with a winding rod. The surface of the winding rod is wrapped with multiple winding cables (5) whose tail ends are connected to the surface of the uppermost back plate (72). The surface of the screw (71) is connected to a power assembly (75) located between the rear wall of the pile body (1) and the back plate (72).

2. The new energy charging pile based on real-time battery state adjustment according to claim 1, characterized in that: The power assembly (75) includes a movable block (751) threaded onto the surface of the lead screw (71). A small electric actuator (752) is mounted on the top of the movable block (751). A follower block (754) is connected to the power end of the small electric actuator (752). The follower block (754) has a through hole with a diameter larger than that of the lead screw (71) inside. A folding piece (753) is installed between the follower block (754) and the movable block (751). The folding piece (753) is located between the back plate (72) and the small electric actuator (752).

3. A new energy charging pile based on real-time battery state adjustment according to claim 2, characterized in that: The surfaces of the follower block (754) and the moving block (751) that are close to each other are equipped with rotating shafts. The folding member (753) includes two upright plates connected by a shaft, and the tail ends of the two upright plates are respectively connected to the surfaces of the two rotating shafts.

4. A new energy charging pile based on real-time battery state adjustment according to claim 1, characterized in that: The inner wall of the pile body (1) is equipped with a rotating motor (8), and the output end of the rotating motor (8) is connected to a round rod. The round rod and the surface of the lead screw (71) near the top are connected by a conveyor belt (9). The inner wall of the pile body (1) is equipped with a drive motor (4) whose output end is connected to the end of the winding rod.

5. A new energy charging pile based on real-time battery state adjustment according to claim 4, characterized in that: The drive motor (4) and the rotating motor (8) are arranged vertically, with the drive motor (4) located in front of the rotating motor (8) and the conveyor belt (9) located above the winding rod.

6. A new energy charging pile based on real-time battery state adjustment according to claim 1, characterized in that: The inner wall of the pile body (1) is equipped with a guide rod arranged symmetrically with the lead screw (71). The surface of the guide rod is slidably connected to a slider, and the surface of the slider is connected to the surface of the moving block (751) through a long rod.

7. A new energy charging pile based on real-time battery state adjustment according to claim 1, characterized in that: The replacement structure of the bracket is an adjustment unit, which includes an electric extension rod (10) installed at the bottom of the uppermost back plate (72) and the top of the other back plates (72), wherein the power end of the uppermost electric extension rod (10) is connected to the surface of the uppermost rotating shaft (74), and the power end of the lowermost electric extension rod (10) is connected to the surface of the lowermost rotating shaft (74).

8. A new energy charging pile based on real-time battery state adjustment according to claim 7, characterized in that: The adjustment unit also includes a connecting rod (11) installed at the bottom of the back plate (72) in the middle position, and the tail end of the connecting rod (11) is connected to the surface of the nearest rotating shaft (74) below.

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