Thermal management structure and control method of split type liquid cooling mobile quick charging device

Abstract

The invention discloses a heat management structure and a control method of a split type liquid cooling mobile fast charging device, the heat management structure comprises a main body, a heat dissipation plate and a containing cavity, the containing cavity comprises a control communication area, an energy supply area and a cooling installation area, the energy supply area comprises a battery bin and an installation bin, the battery bin is provided with a power supply part, the power supply part is connected with the heat dissipation plate, and the installation bin is provided with an energy supply assembly. The energy supply assembly is connected with the heat dissipation plates, the cooling installation area is provided with a liquid cooling unit, the liquid cooling unit is provided with a main pipeline and an auxiliary pipeline for each heat dissipation plate, the main pipelines and the auxiliary pipelines are connected with main heat exchange flow channels of the heat dissipation plates, and the heat dissipation plates are provided with flow adjusting pieces for controlling the flow of the main pipelines and the auxiliary pipelines entering the main heat exchange flow channels. And the liquid cooling unit is matched with each flow adjusting piece to adjust the cooling liquid flowing into the corresponding heat dissipation plate. The invention provides a thermal management structure and a control method of a split type liquid cooling mobile quick charging device, and aims to solve the technical problem that an existing mobile quick charging device cannot meet the heat dissipation requirements of a power supply part and an energy supply assembly.

Description

Technical Field

[0001] This application belongs to the technical field of mobile fast charging devices, specifically relating to a thermal management structure and control method for a split-type liquid-cooled mobile fast charging device. Background Technology

[0002] Mobile fast charging devices are core equipment in high-density charging scenarios, used to charge vehicles. A mobile fast charging device includes a mobile carrier and a thermal management structure mounted on the carrier. The thermal management structure includes a main body and power supply components and power units mounted on the main body. The power supply components integrate an AC / DC rectifier module and a DC / DC converter unit. On one hand, it receives external AC power, rectifies, filters, and regulates it before outputting DC power adapted to the power supply components, achieving efficient charging. On the other hand, when charging a vehicle, the power supply components need to boost the low-voltage DC power output from the power supply components to the high-voltage specifications required for fast charging of new energy vehicles. During the charging or discharging process, the power supply components and power supply components generate a large amount of heat. Existing solutions use liquid cooling to cool the power supply components, and passive or natural cooling methods are used for the power supply components. This cannot effectively cool the power supply components. Moreover, once the liquid cooling device is activated, it continuously cools the power supply components, without adjusting for the state of the power supply components, leading to energy waste.

[0003] In the actual operation of mobile fast charging devices, the heat generation of the power supply components is not constant but dynamically changes with the operating conditions: when the device is in the fast charging stage of the power supply component, the power supply component needs to operate at high power to efficiently convert AC power into DC power. At this time, the energy consumption of the power supply component increases significantly, and the heat generation reaches the peak level; when the power supply component is close to full charge, the power supply component will automatically reduce the conversion power to protect the battery, and the heat generation will decrease sharply. In addition, there is a fundamental difference between the heat generation patterns of the power supply component and the power supply component. The power supply component exhibits pulse-like fluctuation characteristics, with power switching frequently with the operating conditions, resulting in large instantaneous fluctuations in heat generation. In contrast, the power supply component exhibits smooth and continuous characteristics, with slow changes in charging and discharging current, resulting in smaller fluctuations in heat generation. It requires stable and precise heat dissipation, and the temperature needs to be controlled within a specific range. Therefore, the existing thermal management structure of mobile fast charging devices cannot meet the heat dissipation requirements of the power supply component and the power supply component. Summary of the Invention

[0004] This application provides a thermal management structure and control method for a split-type liquid-cooled mobile fast charging device to solve the technical problem that existing mobile fast charging devices cannot meet the heat dissipation requirements of power supply components and energy supply parts.

[0005] The primary objective of this application is to provide a thermal management structure for a split-type liquid-cooled mobile fast-charging device. The technical solution adopted is as follows: it includes a main body, multiple heat sinks, and a receiving cavity disposed in the main body. The receiving cavity includes a control and communication area, a power supply area, and a cooling installation area arranged vertically in sequence. The power supply area includes a battery compartment and an installation compartment. A power supply component is disposed in the battery compartment, and the power supply component is connected to at least one heat sink. A power supply assembly connected to the power supply component is disposed in the installation compartment, and the power supply assembly is connected to at least one heat sink. A liquid cooling unit is disposed in the cooling installation area. The liquid cooling unit is configured with a set of main pipes and auxiliary pipes for each heat sink. The main pipes and auxiliary pipes are connected to the main heat exchange channel of the corresponding heat sink. The heat sink is provided with a flow regulating component to control the flow rate of the main pipes and auxiliary pipes into the main heat exchange channel. The liquid cooling unit and each flow regulating component cooperate to adjust the coolant flowing into the corresponding heat sink.

[0006] The thermal management structure of the split-type liquid-cooled mobile fast charging device according to the first objective of this application also includes the following additional technical features: The heat sink includes an adhesive layer, a cover layer, and a flow channel layer disposed between the adhesive layer and the cover layer. The adhesive layer can be attached to the heat dissipation surface of the power supply module and the power supply component. The flow channel layer is provided with a main heat exchange flow channel and a switching cavity. The main heat exchange flow channel covers the adhesive layer. The switching cavity includes a first inlet, a second inlet, and an outlet connected to the main heat exchange flow channel. The first inlet is connected to the main pipe, and the second inlet is connected to the auxiliary pipe. A flow regulating component is disposed in the switching cavity, and the flow regulating component can at least partially close the first inlet and / or the second inlet.

[0007] The axis of the first inlet and the axis of the second inlet are at an angle, and the diameter of the first inlet is larger than the diameter of the second inlet.

[0008] The cooling installation area is also equipped with a liquid storage unit connected to the liquid cooling unit. The heat dissipation plate is equipped with a liquid outlet, which is connected to a return liquid branch pipe. Multiple return liquid branch pipes converge into a return liquid pipe, which is connected to the liquid storage unit.

[0009] The liquid cooling unit also includes a cooling fan. The air inlet of the cooling fan faces the bottom of the main body, and the air outlet faces the back or side of the main body. Ventilation holes are opened on the main body at the positions of the air inlet and the air outlet.

[0010] The main body is equipped with a charging device, which includes a charging connector and multiple telescopic components arranged around the charging connector. The charging device is used to supply power to the object to be charged. The object to be charged is equipped with a charging cavity and a press-type charging cover plate that covers the charging cavity. The telescopic components are telescopically arranged in the main body to open the press-type charging cover plate. A heat dissipation plate is provided inside the telescopic components.

[0011] The charging cavity is equipped with a connector that plugs into the charging structure. The charging connector is telescopic and plugs into the connector. The telescopic component extends into the charging cavity and at least partially covers the mating area between the charging connector and the connector.

[0012] The main body is also equipped with a shielding component, which is located on the rotation path of the press-type charging cover. The shielding component is rotatably mounted on the main body, and the rotation of the shielding component, in conjunction with the telescopic component, causes the press-type charging cover to reset.

[0013] The second objective of this application is to provide a control method applied to the thermal management structure of a split-type liquid-cooled mobile fast-charging device as described in the first objective of this application. The technical solution adopted is that the control method includes: Acquire temperature and power information of power supply components and power supply devices; The matching information of the liquid chiller and the adjustment information of the flow control components are determined based on the temperature and power information. Based on the coordination information, adjust the control information of the liquid cooling unit and the flow control components.

[0014] The control method in the second objective of this application also includes the following additional technical features: Based on temperature and power information, the following information is determined: The matching information for the liquid chiller unit and the adjustment information for the flow control components are included. Calculate the total heat dissipation based on power and temperature information; The target flow rate is determined based on the total heat dissipation, and the power matching information of the liquid chiller unit is determined based on the target flow rate. The heat dissipation of the power supply components is determined based on the power and temperature information, and the adjustment information of the current regulating components of the corresponding power supply components is determined based on the heat dissipation of the power supply components. The heat dissipation of the power supply components is determined based on the power and temperature information, and the adjustment information of the current regulating components of the corresponding power supply components is determined based on the heat dissipation of the power supply components.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application achieves physical isolation of functional areas by setting up a cavity layout of control and communication area, power supply area and cooling installation area in sequence along the vertical direction. The control and communication area is far away from heat source and vibration source to reduce electromagnetic interference. The power supply area shortens the connection path between power supply components and power supply components to reduce line loss. The independent layout of the cooling installation area facilitates separate maintenance of the liquid cooling unit. It can reduce the overall size of the equipment and adapt to the space requirements of mobile scenarios. The power supply components and power supply units are respectively connected to heat sinks. Combined with the main heat exchange channel of the liquid cooling unit connected to the heat sink through main and auxiliary pipes, and the coordinated mechanism of the flow regulating component controlling the flow, it can achieve differentiated heat dissipation for the pulsed high heat generation of the power supply components and the gradual and continuous heat generation of the power supply components. When the heat generation of the power supply components increases suddenly, the flow regulating component increases the flow rate and the liquid cooling unit increases the power to quickly control the temperature. When the heat generation decreases suddenly, the flow rate is reduced and the power is reduced to reduce energy consumption. It can also stabilize the temperature of the power supply components within a safe range to avoid the risk of thermal runaway and control the temperature of the power supply components within a threshold to avoid overheating. Ultimately, while ensuring stable output of fast charging power, improving charging efficiency and safety, it can significantly reduce the ineffective energy consumption of the liquid cooling system and extend the device's battery life and equipment life.

[0016] 2. As a preferred embodiment of this application, by providing an adhesive layer, the adhesive layer can be directly and tightly bonded to the heat dissipation surface of the power supply component and the power supply component. Combined with the main heat exchange flow channel covering the adhesive layer, the heat transfer distance between the heat source and the coolant can be minimized, reducing contact thermal resistance. This allows the pulsed high-heat generation of the power supply component and the gradual, continuous heating of the power supply component to be quickly conducted to the flow channel layer, significantly improving heat transfer efficiency. The switching chamber connects to the main pipe and the auxiliary pipe respectively through the first inlet and the second inlet. Combined with the flow regulating device within the switching chamber, it can flexibly switch between three modes: single liquid supply to the main pipe, single liquid supply to the auxiliary pipe, and coordinated liquid supply to the main and auxiliary pipes. When the power supply component heats up... When the heat output increases rapidly, the flow regulating component can reduce the closure of the first / second inlet, increase the coolant input of the main and auxiliary pipelines, and enhance heat dissipation. When the heat output decreases rapidly or the power supply needs stable heat dissipation, the flow regulating component can partially close the inlet to reduce the flow rate, avoid excessive cooling and energy waste, and achieve precise flow distribution under different heat sources and operating conditions. At the same time, placing the flow channel layer and the flow regulating component between the bonding layer and the cover plate layer not only protects the internal flow channel from external environmental interference, but also makes the overall structure of the heat sink compact and thin, adapting to the installation space requirements of the power supply components and the power supply, without occupying additional redundant space inside the device, further optimizing the overall size and layout flexibility of the mobile fast charging device.

[0017] 3. As a preferred embodiment of this application, by setting the axes of the first inlet and the second inlet at an angle, and the diameter of the first inlet being larger than the diameter of the second inlet, the two fluids entering from the first inlet and the second inlet can form a natural swirling or turbulent effect in the cavity. When the high-speed auxiliary pipe fluid and the low-speed main pipe fluid converge along the angle direction, local eddies will be generated due to the momentum difference, breaking the laminar boundary layer of the coolant in the flow channel, allowing the coolant to contact the flow channel wall more fully. When the heat generation of the power supply component increases sharply and the main pipe and auxiliary pipe supply liquid in coordination, the overall heat exchange efficiency of the main heat exchange flow channel can be significantly improved, and the heat transfer efficiency can be accelerated. Moreover, by using flow regulating components to partially close and adjust the inlet, the flow ratio between the main pipe and the auxiliary pipe can be controlled more precisely. This ensures that the flow rate and volume of the coolant entering the main heat exchange channel are uniformly adapted to the heat source requirements. This not only improves the instantaneous heat dissipation capacity of the power supply components under high load, but also ensures stable temperature control of the power supply components under low load. At the same time, it reduces fluid resistance loss, lowers the power consumption of the liquid cooling unit, and further optimizes the overall energy efficiency and operational stability of the system.

[0018] 4. As a preferred embodiment of this application, the liquid storage device can store coolant and replenish the coolant loss caused by pipeline micro-leakage and high-temperature evaporation during long-term heat exchange in real time, avoid insufficient liquid level in the main pipeline and auxiliary pipeline, ensure that the main heat exchange channel of the heat sink is always full of coolant, and ensure continuous and efficient heat exchange between the power supply components and the power supply components. The coolant is circulated through the return pipe connected to the liquid storage device.

[0019] 5. As a preferred embodiment of this application, by setting the air inlet to face the bottom of the main body, the air temperature at the bottom of the main body is low, which can provide the cooling fan with cooler air at a lower temperature and with better airflow, thereby improving the cooling efficiency of the cooling fan and enabling core heat dissipation components such as the condenser of the liquid-cooled unit to complete heat exchange more quickly, indirectly reducing the temperature of the coolant. By setting the air outlet to face the back or side of the main body, combined with the ventilation holes at the corresponding positions on the main body, the hot air exhausted by the cooling fan is directly guided to an open area outside the equipment through the ventilation holes on the back or side, avoiding heat accumulation.

[0020] 6. As a preferred embodiment of this application, by using a telescopic member arranged circumferentially on the charging connector in conjunction with a press-type charging cover, the convenience and automation of charging operation are greatly improved. The telescopic member can directly extend and retract to push the press-type charging cover, automatically completing the opening action without manual intervention, thus saving operation time and improving charging efficiency. A heat dissipation plate is provided on the telescopic member to dissipate heat from the charging connector.

[0021] Furthermore, the telescopic design of the charging connector, in conjunction with the insertion of the docking connector, significantly improves the accuracy and stability of charging docking. The charging connector can adaptively adjust the insertion distance through telescopic extension, ensuring precise docking even with slight positional deviations. By incorporating a telescopic component that extends into the charging cavity and at least partially covers the docking area of ​​the charging connector and docking connector, the heat sink is positioned closer to the docking area, reducing its temperature and preventing oxidation of the connector's metal contacts and increased contact resistance caused by high temperatures, thus further extending the connector's lifespan.

[0022] Furthermore, the rotational engagement of the shield makes the mechanical movements of the charging process more seamless. By positioning the shield on the rotation path of the press-type cover, the opening angle of the cover can be limited, forming a physical limit on the range of cover rotation and reducing component wear caused by excessive opening angle. The rotational engagement of the shield with the telescopic component enables the press-type charging cover to be reset, avoiding manual intervention and improving the unattended compatibility of mobile fast charging devices.

[0023] 7. In the control method of this application, the coordination information of the liquid cooling unit and the adjustment information of the flow regulating component are determined based on temperature information and power information. Temperature information can directly reflect the current heat source heat dissipation status, while power information can predict the heat generation trend. By using both, changes in heat dissipation demand can be identified in advance, significantly shortening the heat dissipation response time and effectively avoiding temperature fluctuations caused by heat generation preceding heat dissipation. The temperature of the power supply component is stably controlled within a safe range, and the temperature of the power supply component is controlled within the high-efficiency operating threshold. This ensures equipment safety and avoids fast charging power fluctuations caused by overheating derating, thereby improving charging efficiency. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a front view of a thermal management structure according to a preferred embodiment of this application; Figure 2 This is a front view of the receiving cavity according to a preferred embodiment of this application; Figure 3 This is a side view of the receiving cavity according to a preferred embodiment of this application; Figure 4 This is an axonometric view of the receiving cavity according to a preferred embodiment of this application; Figure 5 This is a front view of the heat sink according to a preferred embodiment of this application; Figure 6 This is a side view of the heat sink according to a preferred embodiment of this application; Figure 7 for Figure 6 A cross-sectional view along the AA direction; Figure 8 This is a flowchart illustrating a preferred embodiment of the control method of this application.

[0025] List of components and reference numerals: 1. Main body; 11. Ventilation hole; 12. Charging device; 121. Charging connector; 122. Telescopic component; 13. Shielding component; 2. Heat sink; 21. Main heat exchange channel; 22. Flow regulating component; 23. Adhesive layer; 24. Cover plate layer; 25. Channel layer; 251. Switching chamber; 2511. First inlet; 2512. Second inlet; 2513. Outlet; 26. Liquid outlet; 3. Receiving chamber; 31. Control and communication area; 32. Power supply area; 321. Battery compartment; 322. Installation compartment; 33. Cooling installation area; 4. Power supply component; 5. Power supply assembly; 6. Liquid cooling unit; 61. Main pipe; 62. Auxiliary pipe; 63. Cooling fan; 631. Air outlet; 7. Liquid storage component; 8. Liquid return branch pipe; 9. Liquid return pipe. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0028] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0031] like Figure 1 , Figure 2 , Figure 3 As shown, this application discloses a thermal management structure for a split-type liquid-cooled mobile fast charging device, including a main body 1, multiple heat sinks 2, and a receiving cavity 3 disposed in the main body 1. The receiving cavity 3 includes a control and communication area 31, a power supply area 32, and a cooling installation area 33 arranged vertically in sequence. The power supply area 32 includes a battery compartment 321 and an installation compartment 322. A power supply component 4 is provided in the battery compartment 321, and the power supply component 4 is connected to at least one heat sink 2. A power supply component 5 connected to the power supply component 4 is provided in the installation compartment 322, and the power supply component 5 is connected to at least one heat sink 2. A liquid cooling unit 6 is provided in the cooling installation area 33. The liquid cooling unit 6 is configured with a set of main pipes 61 and auxiliary pipes 62 for each heat sink 2. The main pipes 61 and auxiliary pipes 62 are connected to the main heat exchange channel 21 of the corresponding heat sink 2. The heat sink 2 is provided with a flow regulating component 22 to control the flow rate of the main pipes 61 and auxiliary pipes 62 into the main heat exchange channel 21. The liquid cooling unit 6 and each flow regulating component 22 cooperate to adjust the coolant flowing into the corresponding heat sink 2.

[0032] This application achieves physical isolation of functional areas by arranging a cavity 3 along the vertical direction, which contains a control and communication area 31, an energy supply area 32, and a cooling installation area 33. The control and communication area 31 is kept away from heat and vibration sources to reduce electromagnetic interference. The energy supply area 32 shortens the connection path between the power supply component 4 and the energy supply assembly 5 to reduce line loss. The independent layout of the cooling installation area 33 facilitates separate maintenance of the liquid cooling unit 6, which can reduce the overall size of the equipment and adapt to the space requirements of mobile scenarios. The power supply component 5 and the power supply component 4 are respectively connected to the heat sink 2. Combined with the liquid cooling unit 6, which is connected to the main heat exchange channel 21 of the heat sink 2 through the main pipe 61 and the auxiliary pipe 62, and the flow regulating component 22 controls the flow rate, it can achieve differentiated heat dissipation for the pulsed high heat generation of the power supply component 5 and the gradual and continuous heat generation of the power supply component 4. When the heat generation of the power supply component 5 increases sharply, the flow regulating component 22 increases the flow rate and the liquid cooling unit 6 increases the power to quickly control the temperature. When the heat generation decreases sharply, the flow rate is reduced and the power is reduced to reduce energy consumption. It can also stabilize the temperature of the power supply component 4 within a safe range to avoid the risk of thermal runaway and control the temperature of the power supply component 5 within the threshold to avoid overheating. Ultimately, while ensuring stable output of fast charging power, improving charging efficiency and safety, it can significantly reduce the ineffective energy consumption of the liquid cooling system and extend the device's battery life and equipment life.

[0033] Preferably, the power supply component 4 is provided with heat sinks 2 on the top, left and right sides. The number of heat sinks 2 provided for the power supply component 5 can be one or more, and this application does not limit it.

[0034] As one of the preferred embodiments of this application, such as Figure 5 , Figure 6 , Figure 7 As shown, the heat sink 2 includes an adhesive layer 23, a cover layer 24, and a flow channel layer 25 disposed between the adhesive layer 23 and the cover layer 24. The adhesive layer 23 can adhere to the heat dissipation surface of the power supply module and the power supply component 4. The flow channel layer 25 is provided with a main heat exchange flow channel 21 and a switching cavity 251. The main heat exchange flow channel 21 covers the adhesive layer 23. The switching cavity 251 includes a first inlet 2511, a second inlet 2512, and an outlet 2513 communicating with the main heat exchange flow channel 21. The first inlet 2511 is connected to the main pipe 61, and the second inlet 2512 is connected to the auxiliary pipe 62. A flow regulating component 22 is disposed in the switching cavity 251. The flow regulating component 22 can at least partially close the first inlet 2511 and / or the second inlet 2512. Further, the flow regulating component 22 includes a drive motor and a baffle plate. The drive motor includes a telescopically oriented output shaft, and the baffle plate is connected to the output shaft. The heat sink 2 is provided with a guide groove to guide the movement of the baffle plate.

[0035] By setting the bonding layer 23, the bonding layer 23 can be directly and tightly bonded to the heat dissipation surface of the power supply component 5 and the power supply component 4. With the main heat exchange flow channel 21 covering the bonding layer 23, the heat transfer distance between the heat source and the coolant can be minimized, reducing contact thermal resistance. This allows the pulsed high heat generation of the power supply component 5 and the gradual and continuous heat generation of the power supply component 4 to be quickly conducted to the flow channel layer 25, greatly improving heat transfer efficiency. The switching chamber 251 is connected to the main pipe 61 and the auxiliary pipe 62 through the first inlet 2511 and the second inlet 2512, respectively. Combined with the flow regulating component 22 in the switching chamber 251, it can flexibly switch between three modes: single liquid supply to the main pipe 61, single liquid supply to the auxiliary pipe 62, and coordinated liquid supply to the main and auxiliary pipes. When the heat generation of the power supply component 5 is rapid... When the flow is increased, the flow regulating component 22 can reduce the closure of the first inlet 2511 / second inlet 2512, increase the coolant input of the main and auxiliary pipelines, and enhance heat dissipation. When the heat generation decreases suddenly or the power supply component 4 needs stable heat dissipation, the flow regulating component 22 can partially close the inlet to reduce the flow rate, avoid excessive cooling and energy waste, and achieve precise flow distribution under different heat sources and different operating conditions. At the same time, the flow channel layer 25 and the flow regulating component 22 are set between the bonding layer 23 and the cover plate layer 24, which not only protects the internal flow channel from external environmental interference, but also makes the overall structure of the heat sink 2 compact and thin, adapting to the installation space requirements of the power supply component 5 and the power supply component 4, without occupying additional redundant space inside the device, further optimizing the overall size and layout flexibility of the mobile fast charging device.

[0036] As a preferred embodiment of the implementation method, such as Figure 7 As shown, the axis of the first inlet 2511 and the axis of the second inlet 2512 are at an angle, and the diameter of the first inlet 2511 is larger than the diameter of the second inlet 2512. The axis of the first inlet 2511 and the axis of the second inlet 2512 are at an angle α, and the value of α is in the range of 15°≤α≤35°. Preferably, the angle between the first inlet 2511 and the second inlet 2512 is adjustable.

[0037] By setting the axes of the first inlet 2511 and the second inlet 2512 at an angle, and the diameter of the first inlet 2511 being larger than the diameter of the second inlet 2512, the two fluids entering from the first inlet 2511 and the second inlet 2512 can form a natural swirling or turbulent effect in the cavity. When the high-speed auxiliary pipe 62 fluid and the low-speed main pipe 61 fluid converge along the angle direction, local eddies will be generated due to the momentum difference, breaking the laminar boundary layer of the coolant in the flow channel, allowing the coolant to contact the wall of the flow channel layer 25 more fully. When the heat of the power supply component 5 increases sharply and the main pipe 61 and the auxiliary pipe 62 supply liquid in coordination, the overall heat exchange efficiency of the main heat exchange flow channel 21 can be significantly improved, and the heat transfer efficiency can be accelerated. Moreover, by coordinating the flow regulating component 22 to partially close and adjust the inlet, the flow ratio between the main pipe 61 and the auxiliary pipe 62 can be controlled more precisely, ensuring that the flow rate and flow of the coolant entering the main heat exchange channel 21 are uniformly adapted to the heat source requirements. This not only improves the instantaneous heat dissipation capacity of the power supply component 5 under high load, but also ensures stable temperature control of the power supply component 4 under low load. At the same time, it reduces fluid resistance loss, lowers the power consumption of the liquid cooling unit 6, and further optimizes the overall energy efficiency and operational stability of the system.

[0038] As a preferred embodiment 2 of the implementation method, such as Figure 2 As shown, the cooling installation area 33 is also equipped with a liquid storage unit 7 connected to the liquid cooling unit 6. The heat dissipation plate 2 is equipped with a liquid outlet 26, which is connected to a return branch pipe. Multiple return branch pipes 8 converge into a return pipe 9, which is connected to the liquid storage unit 7. The return pipe 9 includes a manifold horizontal pipe and a connecting pipe. The manifold horizontal pipe is equipped with multiple return ports. The return branch pipes 8 are connected to the liquid outlet 26, and the connecting pipe is connected to the liquid storage unit 7 to allow the coolant to flow back to the liquid storage unit 7.

[0039] Those skilled in the art will understand that the liquid cooling unit 6 is equipped with a liquid supply pipe and a motor. The motor draws coolant from the liquid storage unit 7 and introduces it into the liquid supply pipe. The liquid supply pipe is connected to the main pipe 61 and the auxiliary pipe 62. It is possible to set up one main pipe 61 and one auxiliary pipe 62 with one liquid supply pipe, or to set up multiple main pipes 61 and auxiliary pipes 62 to share one liquid supply pipe, or to set up one liquid supply pipe for each main pipe 61 and one liquid supply pipe for each auxiliary pipe 62, etc.

[0040] The liquid storage unit 7 can store coolant and replenish the coolant loss caused by pipeline micro-leakage and high-temperature evaporation during long-term heat exchange in real time. It can prevent insufficient liquid level in the main pipe 61 and auxiliary pipe 62, ensure that the main heat exchange channel 21 of the heat sink 2 is always full of coolant, and ensure continuous and efficient heat exchange between the power supply component 5 and the power supply component 4. It is connected to the liquid storage unit 7 through the return pipe to realize the circulation of coolant.

[0041] Furthermore, such as Figure 2 , Figure 4As shown, the liquid cooling unit 6 also includes a cooling fan 63. The air inlet of the cooling fan 63 faces the bottom of the main body 1, and the air outlet 631 faces the back or side of the main body 1. The main body 1 has ventilation holes 11 at the positions corresponding to the air inlet and air outlet 631.

[0042] By setting the air inlet to face the bottom of the main body 1, the lower air temperature at the bottom of the main body 1 provides the cooling fan 63 with cooler and more efficient airflow, improving the cooling efficiency of the cooling fan 63 and enabling core heat dissipation components such as the condenser of the liquid-cooled unit 6 to complete heat exchange more quickly, indirectly reducing the coolant temperature. By setting the air outlet 631 to face the back or side of the main body 1, combined with the ventilation holes 11 at the corresponding positions on the main body 1, the hot air exhausted by the cooling fan 63 is directly guided to an open area outside the equipment through the back or side ventilation holes 11, avoiding heat accumulation.

[0043] As a preferred embodiment of this application, such as Figure 1 As shown, the main body 1 is provided with a charging device 12, which includes a charging connector 121 and a plurality of telescopic members 122 arranged circumferentially around the charging connector 121. The charging device 12 is used to supply power to an object to be charged (not shown in the figure). The object to be charged is provided with a charging cavity (not shown in the figure) and a press-type charging cover (not shown in the figure) covering the charging cavity. The telescopic members 122 are telescopically arranged on the main body 1 so as to open the press-type charging cover. A heat dissipation plate 2 is provided inside the telescopic members 122.

[0044] By using a telescopic member 122 circumferentially arranged on the charging connector 121 in conjunction with a press-type charging cover, the convenience and automation of charging operation are greatly improved. The telescopic member 122 can directly extend and retract to push the press-type charging cover, automatically completing the opening action without manual intervention, which can save operation time and improve charging efficiency. A heat dissipation plate 2 is provided on the telescopic member 122 to dissipate heat from the charging connector 121.

[0045] Preferably, the charging device 12 includes a drive mechanism, the output shaft of which is connected to a drive gear. Multiple driven gears meshing with the drive gear are arranged circumferentially along the drive gear. A telescopic member 122 is connected to a drive rack, and each drive rack is equipped with a helical gear. The driven gears are connected to the helical gears, which mesh with the drive rack. The charging device 12 also includes a housing with a guide groove, in which the drive rack and telescopic member 122 are positioned.

[0046] Furthermore, the charging cavity is provided with a connector (not shown in the attached figure) that is plugged into the charging structure. The charging connector 121 is telescopically configured, and the charging connector 121 is plugged into the connector. The telescopic member 122 extends into the charging cavity and at least partially covers the mating area of ​​the charging connector 121 and the connector.

[0047] The telescopic design of the charging connector 121, in conjunction with the insertion of the connector, significantly improves the accuracy and stability of charging docking. The charging connector 121 can adaptively adjust the insertion distance through telescopic extension, and even with slight positional deviations, precise docking with the connector can be achieved through telescopic compensation. By setting the telescopic component 122 to extend into the charging cavity and at least partially cover the docking area of ​​the charging connector 121 and the connector, the heat sink 2 is brought closer to the docking area, reducing the temperature of the docking area and preventing oxidation of the connector metal contacts and increased contact resistance caused by high temperatures, thus further extending the service life of the connector.

[0048] The charging connector 121 has a connecting member circumferentially, the connecting member has a guide groove, and the outer shell has a guide protrusion that mates with the guide groove. The charging device 12 has a driving member, the driving member has a telescopic rod, and the telescopic rod is connected to the connecting member. Preferably, the driving member is a hydraulic cylinder.

[0049] Furthermore, such as Figure 1 As shown, the main body 1 is also provided with a shielding member 13. The shielding member 13 is disposed on the rotation path of the press-type charging cover. The shielding member 13 is rotatably disposed on the main body 1. The shielding member 13 rotates in conjunction with the telescopic member 122 to reset the press-type charging cover.

[0050] The rotational engagement of the shield 13 makes the mechanical movements of the charging process more seamless. By positioning the shield 13 on the rotation path of the press-type cover, the opening angle of the cover can be limited, forming a physical limit on the rotation range of the cover and reducing component wear caused by excessive opening angle. The rotational engagement of the shield 13 with the telescopic component 122 enables the press-type charging cover to be reset, avoiding manual intervention and improving the unattended adaptability of the mobile fast charging device.

[0051] This application discloses a control method applied to the thermal management structure of the split-type liquid-cooled mobile fast-charging device disclosed in this application, such as... Figure 8 As shown, the control methods include: Obtain temperature and power information from heating components and power supply components; The matching information of the liquid chiller and the adjustment information of the flow control components are determined based on the temperature and power information. Based on the coordination information, adjust the control information of the liquid cooling unit and the flow control components.

[0052] In the control method of this application, the coordination information of the liquid cooling unit and the adjustment information of the flow regulating component are determined based on temperature information and power information. Temperature information can directly reflect the current heat source heat dissipation status, while power information can predict the heat generation trend. By using both, changes in heat dissipation demand can be identified in advance, significantly shortening the heat dissipation response time and effectively avoiding temperature fluctuations caused by heat generation preceding heat dissipation. The temperature of the power supply component is stably controlled within a safe range, and the temperature of the power supply component is controlled within the high-efficiency operating threshold. This ensures equipment safety and avoids fast charging power fluctuations caused by overheating derating, thereby improving charging efficiency.

[0053] The temperature and power information of the power supply components and power supply devices are obtained, including: The system acquires the standard power and rated temperature of the power supply components and the power supply units, collects the real-time power of the power supply components during charging and discharging, collects the real-time power of the power supply units, and obtains the real-time temperature of the heating components and the power supply units through temperature sensors.

[0054] Based on temperature and power information, the following information is determined: The matching information for the liquid chiller unit and the adjustment information for the flow control components are included. Determine the total heat dissipation based on power and temperature information; The target flow rate is determined based on the total heat dissipation, and the power matching information of the liquid chiller unit is determined based on the target flow rate. The heat dissipation of the power supply components is determined based on the power and temperature information, and the adjustment information of the current regulating components of the corresponding power supply components is determined based on the heat dissipation of the power supply components. The heat dissipation of the power supply components is determined based on the power and temperature information, and the adjustment information of the current regulating components of the corresponding power supply components is determined based on the heat dissipation of the power supply components.

[0055] The total heat dissipation is determined based on temperature and power information, including: Based on the temperature and power information of the power supply components, the heat dissipation of the power supply components is determined. The difference between the real-time power and the standard power of the power supply components is calculated. Combined with a preset power loss coefficient (such as the conversion efficiency curve of the AC / DC converter, usually taken as 85%-95%), the heat dissipation of the power supply components is calculated as follows: ; in, For the heat dissipation of the power supply components, For the real-time power of the power supply components, The standard power of the power supply components, The power loss coefficient of the power supply component; Determine the correction factor for the power supply components and calculate the difference between the real-time temperature and the rated temperature of the power supply components. The calculation formula is as follows: ; in, For real-time temperature, Rated temperature; When ΔT ≤ 0 (real-time temperature is lower than or equal to rated temperature), the correction factor K for the power supply component is 0.8-1.0 (the lower the temperature, the smaller the K value); when 0 < ΔT ≤ 5℃, K is 1.0-1.2; when ΔT > 5℃, K is 1.2-1.5 (the higher the temperature, the larger the K value, to avoid heat accumulation). The specific value of the correction factor for the power supply component can be calibrated through experimental data to ensure it matches the actual heat dissipation requirements.

[0056] The heat dissipation of the power supply components is determined based on the temperature and power information of the power supply components. The calculation formula is as follows: ; in, This refers to the heat dissipation of the power supply components. This refers to the real-time power of the power supply unit. The standard power of the power supply unit. The internal resistance heat loss coefficient of a single power supply device can be obtained by fitting the charge and discharge test data of the power supply device. Determine the correction factor for the power supply component and calculate the difference between the real-time temperature and the rated temperature of the power supply component. The calculation formula is as follows: ; in, For real-time temperature, Rated temperature; when When the temperature is ≤-5℃ (real-time temperature is lower than or equal to the rated temperature), the correction factor K1 for the power supply component is 0.6-0.8 (the lower the temperature, the smaller the K1 value); when -5℃ < When ≤3℃, K1 is taken as 0.8-1.0; when When the temperature is above 3℃, K1 should be 1.0-1.3 (the higher the temperature, the larger the K1 value should be to avoid heat accumulation). The formula for calculating the total heat dissipation is as follows:

[0057] in, This represents the total heat dissipation. For the heat dissipation of the power supply components, K represents the heat dissipation of the power supply component, K is the correction factor for the power supply component, and K1 is the correction factor for the power supply component.

[0058] The target flow rate is determined based on the total heat dissipation, and the power matching information for the liquid chiller unit is determined based on the target flow rate, including: The formula for calculating the target traffic is as follows:

[0059] in, For target traffic, Where is the total heat dissipation, c is the specific heat capacity of the coolant, and p is the density of the coolant. This refers to the preset temperature difference between the temperature of the coolant flowing out of the liquid-cooled unit and the temperature of the coolant returning after passing through the power supply components and electrical components. The power of the liquid-cooled unit is determined based on the correspondence between the target flow rate and the liquid-cooled unit. Simultaneously, a cooling fan is installed in the cooling installation area. The temperature difference coefficient of the cooling fan is determined based on the temperature difference between the returning coolant and the ambient temperature. The power of the cooling fan is determined by multiplying the target flow rate, the temperature difference coefficient, and the fan efficiency.

[0060] The heat dissipation of the power supply components is determined based on the power information. The adjustment information for the corresponding current regulating components of the power supply components is then determined based on the heat dissipation and temperature information. The method for calculating the heat dissipation of the power supply components has been disclosed above. A correction factor for the power supply components is determined based on temperature information. The required flow rate of the power supply components is then determined based on the correction factor and the heat dissipation of the power supply components. The formula for calculating the required flow rate of the power supply components is as follows:

[0061] in, The demand flow of the power supply components, Where is the heat dissipation of the power supply component, K is the correction factor for the power supply component, c is the specific heat capacity of the coolant, and p is the density of the coolant. The preset temperature difference between the temperature of the coolant flowing out of the liquid cooling unit and the temperature of the coolant after passing through the power supply components; The maximum and minimum flow rates of the main pipeline (the minimum flow rate specified by the liquid chiller unit) and the maximum flow rate of the auxiliary pipeline are obtained based on actual measurements. When the demand flow of the power supply component is less than or equal to the minimum flow of the main pipeline, the auxiliary pipeline is closed, and the control flow regulating device adjusts the flow of the main pipeline to the demand flow of the power supply component. When the demand flow of the power supply component is greater than the minimum flow of the main pipeline but less than or equal to the maximum flow of the main pipeline, the control flow regulating device adjusts the flow of the main pipeline to the demand flow of the power supply component and closes the auxiliary pipeline. When the demand flow of the power supply component is greater than the maximum flow of the main pipeline, and less than or equal to the sum of the maximum flow of the main pipeline and the maximum flow of the auxiliary pipeline, the flow regulating device controlling the main pipeline fully opens the main pipeline, and the flow regulating device controlling the auxiliary pipeline adjusts the flow of the auxiliary pipeline to the difference between the demand energy of the power supply component and the maximum flow of the main pipeline, so that the auxiliary pipeline supplements the flow of the main pipeline.

[0062] When the demand flow of the power supply component exceeds the sum of the maximum flow of the main pipeline and the maximum flow of the auxiliary pipeline, the main pipeline and the auxiliary pipeline are fully opened by controlling the flow regulating device, and the power supply component is simultaneously triggered to reduce the load signal and control the power of the power supply component. Furthermore, in conjunction with Embodiment 2, when the demand flow of the power supply component is greater than the maximum flow of the main pipeline and less than or equal to the sum of the maximum flow of the main pipeline and the maximum flow of the auxiliary pipeline, and when the demand flow of the power supply component is greater than the sum of the maximum flow of the main pipeline and the maximum flow of the auxiliary pipeline, the auxiliary control adjusts the angle between the first inlet and the second inlet to enhance heat dissipation, and the actual heat dissipation effect is fed back through temperature information to achieve comprehensive control.

[0063] The heat dissipation of the power supply component is determined based on the power information and temperature information. The adjustment information of the current regulating component of the corresponding power supply component is determined based on the heat dissipation of the power supply component. Its control logic is the same as that of the power supply component, and will not be described in detail in this application.

[0064] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0065] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A thermal management structure for a split-type liquid-cooled mobile fast-charging device, characterized in that, The device includes a main body, multiple heat sinks, and a receiving cavity disposed in the main body. The receiving cavity includes a control and communication area, a power supply area, and a cooling installation area arranged vertically in sequence. The power supply area includes a battery compartment and an installation compartment. A power supply component is disposed in the battery compartment, and the power supply component is connected to at least one of the heat sinks. A power supply assembly connected to the power supply component is disposed in the installation compartment, and the power supply assembly is connected to at least one of the heat sinks. A liquid cooling unit is disposed in the cooling installation area. The liquid cooling unit is configured with a set of main pipes and auxiliary pipes for each heat sink. The main pipes and the auxiliary pipes are connected to the main heat exchange channel of the corresponding heat sink. The heat sink is provided with a flow regulating component to control the flow rate of the main pipes and auxiliary pipes into the main heat exchange channel. The liquid cooling unit cooperates with each of the flow regulating components to adjust the coolant flowing into the corresponding heat sink.

2. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 1, characterized in that, The heat sink includes an adhesive layer, a cover layer, and a flow channel layer disposed between the adhesive layer and the cover layer. The adhesive layer can be attached to the heat dissipation surface of the power supply module and the power supply component. The flow channel layer is provided with a main heat exchange flow channel and a switching cavity. The main heat exchange flow channel covers the adhesive layer. The switching cavity includes a first inlet, a second inlet, and an outlet communicating with the main heat exchange flow channel. The first inlet is connected to the main pipe, and the second inlet is connected to the auxiliary pipe. The flow regulating element is disposed in the switching cavity, and the flow regulating element can at least partially close the first inlet and / or the second inlet.

3. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 2, characterized in that, The axis of the first inlet and the axis of the second inlet are at an angle, and the diameter of the first inlet is larger than the diameter of the second inlet.

4. The thermal management structure of a split-type liquid-cooled mobile fast-charging device according to claim 2, characterized in that, The cooling installation area is also equipped with a liquid storage device connected to the liquid cooling unit. The heat dissipation plate is equipped with a liquid outlet, which is connected to a return liquid branch pipe. Multiple return liquid branch pipes converge into a return liquid pipe, which is connected to the liquid storage device.

5. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 4, characterized in that, The liquid cooling unit also includes a cooling fan, the air inlet of which faces the bottom of the main body and the air outlet of which faces the back or side of the main body. The main body has ventilation holes at the positions corresponding to the air inlet and the air outlet.

6. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 1, characterized in that, The main body is provided with a charging device, which includes a charging connector and a plurality of telescopic members arranged circumferentially on the charging connector. The charging device is used to supply power to the object to be charged. The object to be charged is provided with a charging cavity and a press-type charging cover plate that covers the charging cavity. The telescopic members are telescopically arranged on the main body to open the press-type charging cover plate. The heat dissipation plate is provided inside the telescopic members.

7. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 6, characterized in that, The charging cavity is provided with a connector that plugs into the charging structure. The charging connector is telescopically oriented and plugs into the connector. The telescopic component extends into the charging cavity and at least partially covers the mating area between the charging connector and the connector.

8. The thermal management structure of a split-type liquid-cooled mobile fast charging device according to claim 7, characterized in that, The main body is also provided with a shielding member, which is disposed on the rotation path of the press-type charging cover. The shielding member is rotatably disposed on the main body, and the rotation of the shielding member cooperates with the telescopic member to reset the press-type charging cover.

9. A control method applied to the thermal management structure of a split-type liquid-cooled mobile fast-charging device according to any one of claims 1 to 8, characterized in that, The control method includes: Obtain temperature and power information of the power supply component and the power supply unit; The matching information of the liquid cooler and the adjustment information of the flow regulating component are determined based on the temperature information and the power information. The liquid cooling unit and the flow regulating component are controlled according to the coordination information and the adjustment information.

10. The control method according to claim 9, characterized in that, The step of determining the matching information of the liquid chiller and the adjustment information of the flow regulating component based on the temperature information and the power information includes: Calculate the total heat dissipation based on the power information and the temperature information; The target flow rate is determined based on the total heat dissipation, and the power matching information of the liquid chiller unit is determined based on the target flow rate. The heat dissipation of the power supply component is determined based on the power information and the temperature information, and the adjustment information of the current regulating component corresponding to the power supply component is determined based on the heat dissipation of the power supply component. The heat dissipation of the power supply component is determined based on the power information and the temperature information, and the adjustment information of the current regulating component corresponding to the power supply component is determined based on the heat dissipation of the power supply component.

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