A high-power starting and generating integrated motor and a control system thereof

Abstract

The application relates to a high-power starting and generating integrated motor and a control system thereof applied to the technical field of motors, which integrates the heat dissipation systems of the motor and the controller to realize synchronous water cooling and air cooling of the two, compared with the independent heat dissipation mode in the prior art, the efficiency of heat dissipation management can be improved, and the running temperature can be monitored to a certain extent under the arrangement of the heat buffer layer; when the temperature is close to the high critical point of safe operation, heat can be quickly absorbed and phase changed, so that certain heat is consumed, the temperature rising speed is delayed, a certain time is provided for the regulation and control of heat dissipation, the temperature of the motor can be steadily reduced, the heat management out of control caused by untimely regulation and control is effectively avoided, and the safe and stable operation of the motor is effectively ensured.

Description

Technical Field

[0001] This invention relates to a high-power motor, and more particularly to a high-power integrated starter-generator motor and its control system applied in the field of motor technology. Background Technology

[0002] An electric motor is an electromechanical energy conversion device that integrates the functions of a motor (driving) and a generator (generating electricity) into a single electromagnetic structure. It can dynamically switch operating modes under different working conditions to achieve efficient bidirectional conversion between electrical energy and mechanical energy.

[0003] Integrated starter motors offer advantages such as integration and high efficiency, and are generally used in high-power equipment, such as mining trucks and large ships. However, due to the integration of the engine, generator, and mode switching controller, and the heavy load when used in large equipment, the heat generated by this motor is greater than that of ordinary motors. In actual use, thermal management failure is prone to occur. This can cause abnormalities in the motor and reduce the control accuracy of the integrated controller, affecting the timeliness of mode switching control and the normal operation of high-power equipment. Therefore, heat dissipation design is a key consideration for this type of motor. For example, Chinese Patent Specification CN221748149U discloses a two-in-one structure for a motor and controller, and Chinese Patent Specification CN213717798U discloses a heat dissipation housing and drive assembly that integrates the controller and motor.

[0004] However, the integration of the motor and controller results in multiple heat sources and heat points, leading to high heat dissipation requirements. The aforementioned patents only employ water cooling or air cooling designs, which are insufficient to meet the heat dissipation needs of the motor. This results in the continued failure of thermal management. Furthermore, the heat dissipation management of the motor and controller is generally designed independently, which not only increases the cost of heat dissipation but also easily leads to asynchronous heat dissipation, affecting the stability of operation. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the heat dissipation requirements of the integrated starter motor are high, and the existing water-cooling or air-cooling methods are difficult to meet its requirements.

[0006] To address the aforementioned problems, this invention provides a high-power integrated starter motor, comprising a motor body and a controller mounted on the outer end of the motor body. The motor body includes a motor housing, a rotor shaft located at the center of the motor housing, a stator sleeved outside the rotor shaft, and an inner sheath sleeved outside the stator. The inner sheath is in contact with the inner wall of the motor housing. An upper end cover and a lower end cover are fixedly connected to the upper and lower ends of the motor housing, respectively. The upper end cover has multiple heat dissipation holes, and the end of the rotor shaft extends movably through the upper end cover. The motor housing has a double-layer hollow structure, and a spiral flow channel is fixedly connected inside the motor housing. A water inlet and a water outlet are fixedly connected to the middle of the outer end of the motor housing. The water inlet is located below the water outlet, and both are fixedly connected through the outer layer of the motor housing and fixedly connected to the spiral flow channel. The controller includes a controller housing, a control main board located inside the controller housing, and a cover plate fixedly connected to the end of the controller housing away from the motor housing. A partition is fixedly connected between the left and right inner walls of the controller housing. A heat-conducting back plate is fixedly connected between the upper inner wall of the controller housing and the partition. The heat-conducting back plate and the controller housing form a water-connecting cavity. Multiple heat-connecting bridges are fixedly connected between the controller housing and the motor housing, and the heat-connecting bridges connect the water-connecting cavity and the spiral flow channel. A heat buffer layer is fixedly connected to the outer end of the heat-spreading backplate away from the motor housing. A buffer groove is carved in the middle of the heat buffer layer. A heat-spreading backplate is fixedly connected to the opening of the buffer groove. Multiple evenly distributed heat-conducting fins are fixedly connected to the end face of the heat-spreading backplate facing the heat buffer layer. The control board is mounted on the heat buffer layer, and the back of the control board is in contact with the heat-spreading backplate. A filling port is fixedly connected to the outer end of the controller housing. The end of the filling port is fixedly inserted through the controller housing and communicates with the buffer groove. High-temperature phase change material is filled into the buffer groove through the filling port, and the high-temperature phase change material fills the buffer groove. Two current-sensing rods are fixedly connected between the left and right inner walls of the buffer groove.

[0007] In the aforementioned high-power integrated starter motor, the heat dissipation systems of the motor and controller are interconnected to form a single unit, thereby achieving synchronous water cooling and air cooling for both. Furthermore, with the setting of a thermal buffer layer, when the temperature approaches the high critical point for safe operation, it can quickly absorb heat and undergo a phase change, thereby consuming a certain amount of heat, slowing down the temperature rise rate, and providing a certain amount of time for heat dissipation regulation. This effectively ensures the safe and stable operation of the motor and reduces the occurrence of thermal management runaway.

[0008] As a further improvement of this application, multiple positioning rods are fixedly connected to the heat-conducting back plate and the heat buffer layer. The positioning rods are connected to the cover plate by threads. The multiple positioning rods are all hollow structures with a single opening. The open end of the positioning rod faces the heat-conducting back plate and communicates with the water connection cavity. An extension tube is fixedly connected to the inner wall of the buffer tank away from the injection port. The extension tube extends into the water connection cavity.

[0009] As a further improvement of this application, two sets of vent holes are drilled on the outer end of the controller housing on the same side as the injection port. The two sets of vent holes are respectively plugged with an upper plug and a lower plug, and the two sets of vent holes are located at the upper and lower ends of the end face of the controller housing. An extension plate is fixedly connected to the outer end of the lower end cover. The extension plate is fixedly connected to the lower edge of the controller housing by bolts, and the extension plate, the controller housing, and the partition plate form a connecting air cavity. A connecting hole is drilled on the partition plate, and the connecting hole connects the inside of the controller housing and the connecting air cavity.

[0010] As a further improvement of this application, both the lower end cover and the upper end cover have recessed annular grooves at their respective ends, and both ends are fixedly connected with multiple triangular bracing bars arranged in a ring array. The upper and lower ends of the inner sheath respectively abut against the multiple triangular bracing bars, and the outer surface of the inner sheath has multiple vertical connecting grooves that connect the upper and lower recessed annular grooves.

[0011] As a further improvement of this application, the phase change temperature of the high-temperature phase change material is 70-90℃, and the high-temperature phase change material is a uniform mixture of paraffin and metal powder in a volume ratio of 2:1, with an electromagnetic sheet embedded in the top of the heat buffer layer.

[0012] As a further improvement of this application, the flow sensing rod includes two end seats, light-shielding tubes fixedly connected to the two end seats at their respective close ends, and a flow sensing strip fixedly connected between the two light-shielding tubes. A laser emitter and a laser receiver are respectively installed at the close ends of the two light-shielding tubes. An opening sleeve is also fixedly connected between the upper ends of the close ends of the two light-shielding tubes, and the flow sensing strip is located inside the opening sleeve.

[0013] As a further improvement of this application, the two light-shielding tubes on the same busbar are of different lengths, and the ratio of their lengths is 1:2-3. The two light-shielding tubes of different lengths on the two busbars are in opposite positions.

[0014] As a further improvement of this application, the flow-sensing strip includes a temperature-following tube, two connecting sleeves fixedly connected between the left and right ends of the temperature-following tube and the corresponding light-shielding tubes, and a light-modifying plate fixedly connected to the middle of the inner wall of the temperature-following tube. The two connecting sleeves have the same length and are flexible sealing structures in a relaxed state.

[0015] As a further improvement of this application, the light-blocking sheet is made of transparent structure, and the transparency of the light-blocking sheet gradually increases from bottom to top. The laser receiver is located slightly below the axis of the light-blocking tube. An electromagnetic sheet is embedded in the top of the heat buffer layer, and the temperature-controlled tube is made of ferromagnetic metal material.

[0016] As a further improvement of this application, the control system includes a controller, a temperature sensor installed inside the extension pipe, a circulating water pump connected to the water inlet via a liquid guide pipe, and a fan connected to the vent via a vent pipe. The fan, the circulating water pump, and the temperature sensor are all signal-connected to the controller.

[0017] In summary, by integrating the cooling systems of the motor and controller into a single unit, simultaneous water and air cooling can be achieved. Compared to the independent cooling methods in existing technologies, this approach improves the efficiency of heat management. Furthermore, the thermal buffer layer allows for monitoring of the operating temperature. When the temperature approaches the critical point for safe operation, the motor can rapidly absorb heat and undergo a phase change, thereby consuming some heat, slowing down the temperature rise, and providing sufficient time for heat dissipation regulation. This ensures that the motor temperature can be steadily reduced, effectively preventing thermal management malfunctions caused by untimely regulation, and thus effectively guaranteeing the safe and stable operation of the motor. Attached Figure Description

[0018] Figure 1 This is an exploded view of the left side of the first embodiment of this application; Figure 2 This is an exploded view of the right side of the first embodiment of this application; Figure 3 This is a perspective view of the first embodiment of this application; Figure 4 This is a partial perspective view of the internal interlayer of the outer shell according to the first embodiment of this application; Figure 5 This is a schematic diagram of the internal components of the controller according to the first embodiment of this application; Figure 6 This is a schematic diagram of the internal part of the controller after the heat dissipation backplate of the first embodiment of this application has been removed. Figure 7 This is a top view of the first embodiment of this application; Figure 8 This is a perspective view of the heat-spreading backplate according to the first embodiment of this application; Figure 9 This is a side cross-sectional view of the heat buffer layer portion of the first and second embodiments of this application; Figure 10 This is a perspective view of two busbar sensing rods according to the second embodiment of this application; Figure 11 This is a front cross-sectional view of the busbar sensing rod according to the second embodiment of this application; Figure 12 This is a radial cross-sectional view of the flow sensing rod according to the second embodiment of this application; Figure 13This is a radial cross-sectional view of the manifold sensing rod in the second embodiment of this application when the temperature rises abnormally.

[0019] Explanation of the labels in the diagram: 11 Motor housing, 12 Controller housing, 13 Control motherboard, 14 Cover plate, 101 Thermal bridge, 102 Heat-drying back plate, 103 Positioning rod, 21 Rotor shaft, 22 Stator, 3 Inner sheath, 301 Connecting groove, 41 Upper end cover, 42 Lower end cover, 401 Triangular brace, 402 Sinking ring groove, 403 Heat dissipation hole, 51 Water inlet, 52 Drain outlet, 53 Spiral flow channel, 6 Heat-drying back plate, 61 Heat-conducting fins, 601 Injection port, 602 Extension tube, 71 Upper plug, 72 Lower plug, 701 Series cavity hole, 8 Merging sensing rod, 81 Light-shielding tube, 82 Opening sleeve, 831 Temperature-following tube, 832 Connecting tube sleeve, 833 Light-changing plate, 801 Laser emitter, 802 Laser receiver. Detailed Implementation

[0020] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] First implementation method: Figure 1-3 A high-power starter motor is shown, including a motor body and a controller installed at the outer end of the motor body. The motor body includes a motor housing 11, a rotor shaft 21 located at the center of the motor housing 11, a stator 22 sleeved on the rotor shaft 21, and an inner sleeve 3 sleeved on the stator 22. The inner sleeve 3 is in contact with the inner wall of the motor housing 11. An upper end cover 41 and a lower end cover 42 are fixedly connected to the upper and lower ends of the motor housing 11, respectively. The upper end cover 41 has a plurality of heat dissipation holes 403, and the end of the rotor shaft 21 extends movably through to the outside of the upper end cover 41. The controller includes a controller housing 12, a control main board 13 located inside the controller housing 12, and a cover plate 14 fixedly connected to the end of the controller housing 12 away from the motor housing 11. like Figure 4 The motor housing 11 has a double-layer hollow structure, and a spiral flow channel 53 is fixedly connected inside the motor housing 11. A water inlet 51 and a drain outlet 52 are fixedly connected to the middle of the outer end of the motor housing 11. The water inlet 51 is located below the drain outlet 52, and both are fixedly connected through the outer layer of the motor housing 11 and fixedly connected to the spiral flow channel 53. The water inlet 51 and the drain outlet 52 can be connected to an external cold water source through water pipes, and a circulating water pump can be installed on one of the water pipes to control the cooling water to enter from the water inlet 51 and spiral upward around the inside of the motor housing 11, thereby gradually absorbing heat, and then being discharged from the drain outlet 52 to achieve cooling water circulation and heat dissipation.

[0022] like Figure 5-6A partition is fixedly connected between the left and right inner walls of the controller housing 12. A heat-absorbing backplate 102 is fixedly connected between the upper inner wall of the controller housing 12 and the partition. The heat-absorbing backplate 102 and the controller housing 12 form a water-cooling cavity. Multiple vertically and horizontally evenly distributed heat-absorbing bridges 101 are fixedly connected between the controller housing 12 and the motor housing 11. The heat-absorbing bridges 101 connect the water-cooling cavity and the spiral flow channel 53. Through the water-cooling cavity, the circulating cooling water in the motor housing 11 is led to the water-cooling cavity along the heat-absorbing bridges 101 and absorbs the heat from the control motherboard 13 absorbed by the heat buffer layer in the water-cooling cavity. Finally, it is discharged along the spiral flow channel 53, realizing the series connection of the water-cooling channels between the motor body and the controller. This allows the two to dissipate heat synchronously during thermal management, thereby reducing the cost of heat dissipation and improving the heat dissipation efficiency of both. Figure 6-8 A heat buffer layer is fixedly connected to the outer end of the heat-spreading backplate 102 away from the motor housing 11. A buffer groove is cut in the middle of the heat buffer layer, and a heat-spreading backplate 6 is fixedly connected to the opening of the buffer groove. Multiple evenly distributed heat-conducting fins 61 are fixedly connected to the end face of the heat-spreading backplate 6 facing the heat buffer layer. The multiple heat-conducting fins 61 can extend into the phase change material and increase the overall heat dissipation area of ​​the heat-spreading backplate 6, making its heat conduction effect on the control mainboard 13 better. The control mainboard 13 is mounted on the heat buffer layer, and the back of the control mainboard 13 is in contact with the heat-spreading backplate 6. A filling port 601 is fixedly connected to the outer end of the controller housing 12. Figure 9 The end of the injection port 601 is fixedly inserted through the controller housing 12 and communicates with the buffer groove. High-temperature phase change material is filled into the buffer groove through the injection port 601, and the high-temperature phase change material fills the buffer groove. Through the heat-spreading back plate 6 and the heat-conducting fins 61, it can quickly absorb the heat from the control motherboard 13 and conduct it into the heat buffer layer, so that the high-temperature phase change material gradually absorbs heat. At the same time, since it is backed by the water-cooling cavity, the heat absorbed by it can be quickly absorbed by the cooling water, thereby achieving targeted heat dissipation of the control motherboard 13.

[0023] The phase change temperature of the high-temperature phase change material is 70-90℃. In specific implementation, the phase change temperature range can also be set according to the actual safe operating temperature of the motor and controller. It is worth noting that the phase change temperature is close to the high-temperature critical value of the safe operating temperature. The high-temperature phase change material is made of paraffin wax and metal powder mixed uniformly in a volume ratio of 2:1. By adding metal powder, the overall thermal conductivity can be improved and the heat dissipation effect can be improved. Iron powder is preferred as the metal powder. An electromagnetic plate is embedded in the top of the heat buffer layer. When the temperature approaches the critical temperature, the temperature sensor can detect the temperature and feed it back to the control board 13. The control board 13 controls the cooling medium of water cooling and air cooling to increase the flow rate or decrease the temperature, thereby improving the heat dissipation effect. Each time the high-temperature critical value of the safe operating temperature is approached, the electromagnetic plate is energized to make the iron powder adsorbed and moved upward, so that the iron powder can be redistributed and made relatively uniformly distributed, so as to overcome the situation that the iron powder gathers downward after the high-temperature phase change material melts under the action of gravity.

[0024] Multiple positioning rods 103 are fixedly connected to the heat-insulating back plate 102 and the heat buffer layer. The positioning rods 103 are connected to the cover plate 14 by threads. The multiple positioning rods 103 are all single-opening hollow structures, and the open end of the positioning rod 103 faces the heat-insulating back plate 102 and communicates with the water connection cavity, so that the cooling water can extend into the controller housing 12 through the positioning rods 103, so as to improve the heat dissipation effect inside the controller housing 12. An extension tube 602 is fixedly connected to the inner wall of the buffer tank away from the filling port 601. The extension tube 602 extends into the water connection cavity. The extension tube 602 is encapsulated with a temperature sensor. The temperature sensor can effectively monitor the temperature inside the water connection cavity, that is, effectively monitor the temperature at the connection between the motor and the controller. Based on the temperature, the water inlet speed and the temperature of the water inlet at the water inlet 51 can be adjusted in time, thereby achieving the control of heat dissipation speed and heat dissipation effect.

[0025] like Figure 1-2And 5-6, two sets of vent holes are drilled on the outer end of the controller housing 12 on the same side as the injection port 601. The upper plug 71 and the lower plug 72 are respectively inserted into the two sets of vent holes, and the two sets of vent holes are located at the upper and lower ends of the end face of the controller housing 12. An extension plate is fixedly connected to the outer end of the lower end cover 42. The extension plate is fixedly connected to the lower edge of the controller housing 12 by bolts, and the extension plate, the controller housing 12, and the partition plate form a connecting air cavity. A connecting cavity hole 7 is drilled on the partition plate. 01. The serial port 701 connects the inside of the controller housing 12 and the air chamber. The lower end cover 42 and the upper end cover 41, near each other, are both chiseled with recessed annular grooves 402. Multiple triangular bracing bars 401 arranged in a circular array are fixedly connected to these recessed annular grooves at their near ends. The upper and lower ends of the inner sheath 3 respectively abut against the multiple triangular bracing bars 401. The outer surface of the inner sheath 3 is chiseled with multiple vertical connecting grooves 301, which connect the upper and lower recessed annular grooves. When not in use, such as during transportation, the vent in slot 402 can be blocked by the upper plug 71 and the lower plug 72 to prevent external impurities from entering the motor housing 11 and the controller housing 12. When in use, the upper plug 71 and the lower plug 72 can be pulled out, and the vent can be connected to an external cold air source through an air pipe. A fan can be installed on one of the air pipes, and cold air can be introduced through the lower vent through the fan. Other cold inert gases can also be introduced as needed. Some of the cold air can enter the lower triangular brace 401 and enter the upper sunken ring groove 402 along the multiple connecting slots 301, and then be discharged outward along the heat exhaust hole 403. Some of the cold air enters the space above the partition through the cavity hole 701, and then is discharged inward and outward from the upper vent, thereby realizing the air cooling of the control motherboard 13 inside the controller housing 12. This realizes the parallel connection of the air cooling channels inside the motor housing 11 and the controller housing 12, and achieves synchronous air cooling of both.

[0026] A control system for a high-power starter motor includes a controller, a temperature sensor installed inside an extension tube 602, a circulating water pump connected to the water inlet 51 via a liquid guide pipe, and a fan connected to the vent via a vent pipe. The fan, the circulating water pump, and the temperature sensor are all signal-connected to the controller.

[0027] In summary, by integrating the cooling systems of the motor and controller into a single unit, simultaneous water and air cooling can be achieved. Compared to the independent cooling methods in existing technologies, this approach improves the efficiency of heat management. Furthermore, the thermal buffer layer allows for monitoring of the operating temperature. When the temperature approaches the critical point for safe operation, the motor can rapidly absorb heat and undergo a phase change, thereby consuming some heat, slowing down the temperature rise, and providing sufficient time for heat dissipation regulation. This ensures that the motor temperature can be steadily reduced, effectively preventing thermal management malfunctions caused by untimely regulation, and thus effectively guaranteeing the safe and stable operation of the motor.

[0028] Second implementation method: This embodiment adds a busbar sensing rod 8 to the first embodiment, while the rest remains the same as the first embodiment.

[0029] like Figure 9 Two current-sensing rods 8 are fixedly connected between the left and right inner walls of the buffer tank. Each current-sensing rod 8 includes two end seats, light-shielding tubes 81 fixedly connected to the two end seats at their respective close ends, and a current-sensing strip fixedly connected between the two light-shielding tubes 81. A laser emitter 801 and a laser receiver 802 are respectively installed at the close ends of the two light-shielding tubes 81. An open sleeve 82 is also fixedly connected between the upper ends of the close ends of the two light-shielding tubes 81. The current-sensing strip is located inside the open sleeve 82. Figure 11-12 The flow-sensing strip includes a temperature-following tube 831, two connecting sleeves 832 fixedly connected to the left and right ends of the temperature-following tube 831 and the corresponding light-shielding tubes 81, and a light-modifying plate 833 fixedly connected to the middle of the inner wall of the temperature-following tube 831. The two connecting sleeves 832 are of the same length and are flexible sealing structures in a relaxed state. The light-modifying plate 833 is a transparent structure and its transparency gradually increases from bottom to top. The laser receiver 802 is located slightly below the axis of the light-shielding tube 81.

[0030] The upper part of the opening sleeve 82 is semi-circular and its inner diameter is the same as the outer diameter of the temperature-following tube 831. The two lower ends of the opening sleeve 82 extend outward, so that the temperature-following tube 831 can smoothly enter the opening sleeve 82 for resetting when it is subjected to magnetic attraction.

[0031] like Figure 13As the temperature rises, the paraffin wax gradually softens, reducing its support for the flow-inducing strip. This causes the temperature-following tube 831 to carry the light-changing plate 833 downwards. At this time, the laser emitted by the laser emitter 801 strikes the light-changing plate 833 at a relatively higher position. Furthermore, due to the increasing transparency of the light-changing plate 833, the light intensity received by the laser receiver 802 gradually increases. The higher the temperature, the greater the fluidity of the high-temperature phase change material. Therefore, the greater the downward movement of the temperature-following tube 831, the greater the data change. Based on this, the temperature at the control board 13 can be effectively determined, effectively compensating for the limitation of temperature sensors that can only measure local temperatures. This results in better monitoring of the overall temperature at the control board 13. After the temperature reaches a high level, the electromagnetic plate can be energized, causing the temperature-following tube 831 to move upward along the opening sleeve 82 and contact its top. Then, the power is turned off. The faster and larger the data change received at the laser receiver 802, the higher the fluidity, and the higher the temperature at the control board 13. Based on this, a retest can be performed to effectively ensure the accuracy of temperature monitoring at the control board 13, which facilitates precise control of the flow of cold air or cooling water, allowing the temperature to drop quickly, ensuring the stable operation of the motor and controller, and reducing the occurrence of thermal management runaway. When it is confirmed that temperature control is required, the control electromagnetic plate is always in the on state until the temperature sensor detects that the temperature is lower than the deformation temperature of the high-temperature phase change material and then the power is turned off.

[0032] like Figure 10 The two light-shielding tubes 81 on the same current-sensing rod 8 have different lengths, and the ratio of their lengths is 1:2-3. The two light-shielding tubes 81 of different lengths on the two current-sensing rods 8 are in opposite positions, making the relative positions of the two current-sensing strips farther apart. This makes the state monitoring of high-temperature phase change materials more accurate and reduces local randomness.

[0033] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A high-power integrated starter-generator motor, characterized in that: The device includes a motor body and a controller mounted on the outer end of the motor body. The motor body includes a motor housing (11), a rotor shaft (21) located at the center of the motor housing (11), a stator (22) sleeved on the rotor shaft (21), and an inner sleeve (3) sleeved on the stator (22). The inner sleeve (3) is in contact with the inner wall of the motor housing (11). An upper end cover (41) and a lower end cover (42) are fixedly connected to the upper and lower ends of the motor housing (11), respectively. The upper end cover (41) has... Multiple heat dissipation holes (403) are drilled, and the end of the rotor shaft (21) extends movably through to the outside of the upper end cover (41); the motor housing (11) is a double-layer hollow structure, and a spiral flow channel (53) is fixedly connected inside the motor housing (11). A water inlet (51) and a drain outlet (52) are fixedly connected at the middle of the outer end of the motor housing (11). The water inlet (51) is located below the drain outlet (52), and both of them are fixedly connected through the outer layer of the motor housing (11) and fixedly connected to the spiral flow channel (53); The controller includes a controller housing (12), a control main board (13) located inside the controller housing (12), and a cover plate (14) fixedly connected to the end of the controller housing (12) away from the motor housing (11). A partition is fixedly connected between the left and right inner walls of the controller housing (12). A heat-conducting back plate (102) is fixedly connected between the upper inner wall of the controller housing (12) and the partition. The heat-conducting back plate (102) and the controller housing (12) form a water-connecting cavity. A plurality of heat-connecting bridges (101) are fixedly connected between the controller housing (12) and the motor housing (11). The heat-connecting bridges (101) connect the water-connecting cavity and the spiral flow channel (53). A heat buffer layer is fixedly connected to the outer end of the heat-spreading backplate (102) away from the motor housing (11). A buffer groove is cut in the middle of the heat buffer layer. A heat-spreading backplate (6) is fixedly connected to the opening of the buffer groove. Multiple uniformly distributed heat-conducting fins (61) are fixedly connected to the end face of the heat buffer layer of the heat-spreading backplate (6). The control main board (13) is installed on the heat buffer layer, and the back of the control main board (13) is in contact with the heat-spreading backplate (6). A filling port (601) is fixedly connected to the outer end of the controller housing (12). The end of the filling port (601) is fixedly inserted through the controller housing (12) and communicates with the buffer groove. High-temperature phase change material is filled into the buffer groove through the filling port (601), and the high-temperature phase change material fills the buffer groove. Two flow sensing rods (8) are fixedly connected between the left and right inner walls of the buffer groove.

2. The high-power integrated starter-generator motor according to claim 1, characterized in that: Multiple positioning rods (103) are fixedly connected to the heat-conducting back plate (102) and the heat buffer layer. The positioning rods (103) are connected to the cover plate (14) by threads. The multiple positioning rods (103) are all hollow structures with a single opening. The open end of the positioning rod (103) faces the heat-conducting back plate (102) and communicates with the water connection cavity. An extension tube (602) is fixedly connected to the inner wall of the buffer tank away from the injection port (601). The extension tube (602) extends into the water connection cavity.

3. A high-power integrated starter-generator motor according to claim 1, characterized in that: Two sets of vent holes are drilled on the outer end of the controller housing (12) on the same side as the injection port (601). The two sets of vent holes are respectively plugged with an upper plug (71) and a lower plug (72). The two sets of vent holes are located at the upper and lower ends of the end face of the controller housing (12). An extension plate is fixedly connected to the outer end of the lower end cover (42). The extension plate is fixedly connected to the lower edge of the controller housing (12) by bolts. The extension plate, the controller housing (12) and the partition plate form a connecting air cavity. A cavity hole (701) is drilled on the partition plate. The cavity hole (701) connects the inside of the controller housing (12) and the connecting air cavity.

4. A high-power integrated starter-generator motor according to claim 3, characterized in that: The lower end cap (42) and the upper end cap (41) are both cut with a recessed annular groove (402) at their respective ends, and both ends are fixedly connected with a plurality of triangular bracing bars (401) arranged in a ring array. The upper and lower ends of the inner sleeve (3) respectively abut against the plurality of triangular bracing bars (401), and the outer surface of the inner sleeve (3) is cut with a plurality of vertical connecting grooves (301), which connect the upper and lower recessed annular grooves (402).

5. A high-power integrated starter-generator motor according to claim 1, characterized in that: The phase change temperature of the high-temperature phase change material is 70-90℃, and the high-temperature phase change material is a uniform mixture of paraffin and metal powder in a volume ratio of 2:

1. An electromagnetic sheet is embedded in the top of the heat buffer layer.

6. A high-power integrated starter-generator motor according to claim 1, characterized in that: The current sensing rod (8) includes two end seats, light-shielding tubes (81) fixedly connected to one end of the two end seats respectively, and a current sensing strip fixedly connected between the two light-shielding tubes (81). A laser emitter (801) and a laser receiver (802) are respectively installed at the one end of the two light-shielding tubes (81) that are close to each other. An opening sleeve (82) is also fixedly connected between the upper ends of the two light-shielding tubes (81) that are close to each other. The current sensing strip is located inside the opening sleeve (82).

7. A high-power integrated starter-generator motor according to claim 6, characterized in that: The two light-shielding tubes (81) on the same merging sensing rod (8) have different lengths, and the length ratio between them is 1:2-3. The two light-shielding tubes (81) of different lengths on the two merging sensing rods (8) are in opposite positions.

8. A high-power integrated starter-generator motor according to claim 7, characterized in that: The flow-sensing strip includes a temperature-following tube (831), two connecting sleeves (832) fixedly connected between the left and right ends of the temperature-following tube (831) and the corresponding light-shielding tubes (81), and a light-reducing plate (833) fixedly connected to the middle of the inner wall of the temperature-following tube (831). The two connecting sleeves (832) have the same length and are flexible sealing structures in a relaxed state.

9. A high-power integrated starter-generator motor according to claim 8, characterized in that: The light-modifying sheet (833) is a transparent structure, and the transparency of the light-modifying sheet (833) gradually increases from bottom to top. The laser receiver (802) is located slightly below the axis of the light-shielding tube (81). The temperature-following tube (831) is made of ferromagnetic metal material.

10. The control system for a high-power integrated starter-generator motor according to claim 1, characterized in that: The control system includes a controller, a temperature sensor installed inside the extension tube (602), a circulating water pump connected to the water inlet (51) through a liquid guide pipe, and a fan connected to the vent through a vent pipe. The fan, the circulating water pump, and the temperature sensor are all connected to the controller via signal.

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