A new energy expansion water tank pressure regulating mechanism and intelligent variable capacity and variable pressure expansion water tank

Abstract

This application relates to a pressure regulating mechanism for a new energy expansion tank and an intelligent variable-capacity and variable-pressure expansion tank, belonging to the technical field of expansion tanks. The pressure regulating mechanism for a new energy expansion tank includes a shell, a pressure component, a vacuum component, and a first adjusting component. The pressure component includes a pressure valve core and a pressure spring; the vacuum component includes a vacuum valve core and a vacuum spring; the first adjusting component includes a first power component, an adjusting cover, and an adjusting spring. In high-altitude environments or high-temperature conditions, the adjusting cover can press the pressure spring and the adjusting spring, increasing the opening pressure of the pressure valve core and decreasing the opening pressure of the vacuum valve core. In low-temperature conditions, the adjusting cover can release the pressure spring, reducing the opening pressure of the pressure valve core. An intelligent variable-capacity and variable-pressure expansion tank includes a tank body, a capacity adjusting mechanism, and the aforementioned pressure regulating mechanism for a new energy expansion tank. This application enables the volume and pressure of the expansion tank to be adaptively adjusted based on environmental and operating conditions.

Description

Technical Field

[0001] This application relates to the technical field of expansion tanks, and in particular to a pressure regulating mechanism and an intelligent variable capacity and variable pressure expansion tank for a new energy expansion tank. Background Technology

[0002] The expansion tank is a core component of the automotive cooling system and a key component to ensure the stable operation of the cooling system. The expansion tank ensures the cooling efficiency of the cooling system by dynamically managing the changes in the volume and pressure fluctuations of the coolant.

[0003] The electric motor and electronic control system of new energy vehicles is the core component of the vehicle's power output. Its operating temperature directly determines the power performance, efficiency, and service life. Under different operating conditions, the heat generation of the electric motor and electronic control system varies significantly. Furthermore, under different driving environments, the temperature, pressure, and volume of the coolant in the cooling system also change. Existing cooling systems utilize an expansion tank with its own reserved redundant space to regulate the thermal expansion and contraction of the coolant. A combination valve on the expansion tank regulates the air pressure of the cooling system.

[0004] In the above solution, since the redundant space of the expansion tank cannot be dynamically adjusted according to the actual working conditions, it is easy to cause overpressure in the cooling system under high temperature conditions and poor circulation of coolant under low temperature conditions. Since the pressure relief pressure of the combination valve is fixed, in high-altitude environments, a large pressure relief pressure can easily cause overpressure in the cooling system, while a small pressure relief pressure can easily cause the coolant to boil and vaporize. Therefore, there is an urgent need for an expansion tank that can adaptively adjust the volume and pressure. Summary of the Invention

[0005] In order to enable the volume and pressure of the expansion tank to be adaptively adjusted based on the environment and operating conditions, this application provides a pressure regulating mechanism for a new energy expansion tank and an intelligent variable capacity and variable pressure expansion tank.

[0006] In the first aspect, this application provides a pressure regulating mechanism for a new energy expansion tank, which adopts the following technical solution:

[0007] A pressure regulating mechanism for a new energy expansion tank includes a shell, a pressure component, a vacuum component, and a first regulating component. The shell has an air hole. The pressure component includes a pressure valve core and a pressure spring. The pressure valve core is slidably disposed inside the shell, and the pressure spring is disposed on the pressure valve core. The vacuum component includes a vacuum valve core and a vacuum spring. The vacuum valve core is slidably disposed on the pressure valve core, and the vacuum spring is disposed between the vacuum valve core and the pressure valve core.

[0008] The first adjustment component includes a first power component, an adjustment cover, and an adjustment spring. The first power component is connected to the adjustment cover and the outer shell respectively. The adjustment cover presses against the pressure spring. The adjustment spring is disposed between the adjustment cover and the vacuum valve core. The spring force applied by the adjustment spring and the vacuum spring to the vacuum valve core is in opposite directions. The pressure spring and the vacuum spring are always in a compressed state. The adjustment spring is normally in its original length state.

[0009] The pressure valve core is used to connect the air hole to the open end of the housing by compressing the pressure spring, the vacuum valve core is used to connect the air hole to the open end of the housing by compressing the vacuum spring, and the first power component is used to drive the adjusting cover to tighten or loosen the pressure spring, and also to drive the adjusting cover to tighten the adjusting spring.

[0010] Optionally, the first power component is connected to a first screw, and a first slide rod is threaded onto the first screw. The first slide rod slides through the outer casing and is connected to an adjusting cover. The first power component is used to drive the first screw to rotate.

[0011] Optionally, the vent is located at the end of the housing, and a connecting component is provided on the inner wall of the housing. The connecting component is used to connect the vent and the opening end of the housing after the pressure valve core compresses the pressure spring. A second adjusting component is provided inside the housing. The second adjusting component is used to adjust the amount of compression of the pressure spring by the pressure valve core when the vent and the opening end of the housing are connected.

[0012] Optionally, the conductive assembly includes a sealing plate and a second power component. The sealing plate is slidably disposed in an adjusting groove opened on the inner side wall of the housing. The sealing plate is used to seal against the pressure valve core. The second power component is connected to the housing and the sealing plate respectively. The second power component is used to drive the sealing plate to slide.

[0013] Optionally, the second power component is connected to a second screw, and a second slide rod is threaded onto the second screw. The second slide rod slides through the outer casing and is connected to a sealing plate. The second power component is used to drive the second screw to rotate.

[0014] Optionally, a rubber sealing layer is provided on the groove wall where the adjusting slide contacts the sealing plate and on the plate surface where the sealing plate contacts the pressure valve core.

[0015] Optionally, the second regulating component includes a limit switch, a third slide rod, and a third power component. The limit switch is located inside the housing and on the side of the pressure valve core near the air port. The limit switch is used to output a position signal. The third slide rod is connected to the limit switch and slides through the housing. The third power component is connected to both the third slide rod and the housing. The third power component is used to drive the third slide rod to slide. The limit switch and the connecting component are electrically connected to a controller. The controller responds to the position signal and is used to control the connecting component to connect the air port to the opening end of the housing.

[0016] Optionally, the pressure valve core includes a core plate and a valve cylinder. The core plate is annular and slidably connected to the outer shell. The valve cylinder is connected to the core plate, and a pressure spring is sleeved on the valve cylinder. The vacuum valve core is located inside the core plate, and a vacuum hole is provided on the valve cylinder.

[0017] Secondly, this application provides an intelligent variable-capacity and variable-pressure expansion water tank, which adopts the following technical solution:

[0018] A smart variable capacity and variable pressure expansion water tank includes a water tank body, a capacity adjustment mechanism, and a pressure adjustment mechanism for a new energy expansion water tank as described above.

[0019] The water tank is equipped with a partition that separates the main chamber and the auxiliary chamber. The main chamber is connected to a water pipe for connecting to the cooling system.

[0020] The volume adjustment mechanism includes a water pump installed on the outer wall of the water tank. The water pump is a bidirectional pump, and the two ports of the water pump are respectively connected to a first water pipe and a second water pipe. The first water pipe passes through the main chamber, and the second water pipe passes through the auxiliary chamber.

[0021] The outer shell is connected to the main chamber, and the pressure valve core abuts against the outer wall of the water tank.

[0022] Optionally, a detection mechanism is also included, comprising a first liquid level sensor, a second liquid level sensor, and a pressure sensor. The first liquid level sensor is installed in the main chamber and is used to output a first liquid level signal. The second liquid level sensor is installed in the auxiliary chamber and is used to output a second liquid level signal. The pressure sensor is installed in the main chamber and is used to output a pressure signal. The first liquid level sensor, the second liquid level sensor, and the pressure sensor are all electrically connected to a central control unit. The central control unit is electrically connected to the water pump and the first power component, respectively. The central control unit responds to the first liquid level signal and the second liquid level signal and is used to control the operation of the water pump. The central control unit responds to the pressure signal and is used to control the operation of the first power component.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The pressure regulating mechanism of a new energy expansion tank according to this application includes a shell, a pressure component, a vacuum component, a first regulating component, a conducting component, and a second regulating component. In high-altitude environments, the regulating cover can press the pressure spring and the regulating spring, and the regulating spring can reduce the elastic force of the vacuum spring, thereby increasing the opening pressure of the pressure valve core and decreasing the opening pressure of the vacuum valve core. In high-temperature conditions, the distance between the regulating limit switch and the pressure valve core increases. When the regulating cover remains stationary, the opening pressure of the pressure valve core can increase. In low-temperature conditions, the regulating cover can relax the pressure spring, thereby decreasing the opening pressure of the pressure valve core. Thus, the pressure of the expansion tank can be adaptively adjusted based on the environment and operating conditions.

[0025] 2. This application discloses an intelligent variable-capacity and variable-pressure expansion tank, comprising a tank body, a volume adjustment mechanism, and a pressure adjustment mechanism for a new energy expansion tank as described above. The tank body is provided with a main chamber and a secondary chamber. The volume adjustment mechanism can adjust the volume of coolant in the main chamber using the secondary chamber, and the pressure adjustment mechanism can adjust the pressure in the main chamber, thereby enabling the volume and pressure of the expansion tank to be adaptively adjusted based on the environment and operating conditions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the pressure regulating mechanism of a new energy expansion tank according to this application;

[0027] Figure 2 This is a schematic diagram of the pressure component and vacuum component of the pressure regulating mechanism of a new energy expansion tank according to this application;

[0028] Figure 3 This is a schematic diagram of the third power component and the third slide rod transmission structure of the pressure regulating mechanism of a new energy expansion tank according to this application;

[0029] Figure 4 This is a structural schematic diagram of an intelligent variable capacity and variable pressure expansion tank according to this application;

[0030] Figure 5 This is a structural schematic diagram of the partition, main chamber, and auxiliary chamber of an intelligent variable capacity and variable pressure expansion tank according to this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Outer shell; 11. Vent; 12. Adjusting slide; 2. Pressure assembly; 21. Pressure valve core; 211. Core plate; 212. Valve cylinder; 213. Vacuum port; 22. Pressure spring; 3. Vacuum assembly; 31. Vacuum valve core; 32. Vacuum spring; 4. First adjusting assembly; 41. First power component; 42. Adjusting cover; 43. Adjusting spring; 44. First screw; 45. First slide rod; 5. Conducting assembly; 51. Sealing plate; 52. Second power component; 53. Second screw; 5 4. Second slide bar; 55. Rubber sealing layer; 6. Second adjusting component; 61. Limit switch; 62. Third slide bar; 63. Third power component; 7. Water tank body; 71. Partition plate; 711. Main chamber; 712. Secondary chamber; 72. Connecting water pipe; 73. Water supply pipe; 8. Volume adjustment mechanism; 81. Water pump; 82. First water pipe; 83. Second water pipe; 9. Detection mechanism; 91. First liquid level sensor; 92. Second liquid level sensor; 93. Air pressure sensor; 94. Liquid level gauge. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-5This application will be described in further detail.

[0034] This application discloses a pressure regulating mechanism for a new energy expansion tank. (Refer to...) Figure 1 and Figure 2 A pressure regulating mechanism for a new energy expansion tank includes a shell 1, a pressure component 2, a vacuum component 3, and a first regulating component 4.

[0035] Reference Figure 2 The outer casing 1 has an air hole 11. The pressure assembly 2 includes a pressure valve core 21 and a pressure spring 22. The pressure valve core 21 is slidably disposed inside the outer casing 1, and the pressure spring 22 is fixedly disposed on the pressure valve core 21. The vacuum assembly 3 includes a vacuum valve core 31 and a vacuum spring 32. The vacuum valve core 31 is slidably disposed on the pressure valve core 21, and the vacuum spring 32 is fixedly disposed between the vacuum valve core 31 and the pressure valve core 21.

[0036] The first adjustment component 4 includes a first power component 41, an adjustment cover 42, and an adjustment spring 43.

[0037] The first power component 41 is connected to the adjusting cover 42 and the outer casing 1 respectively. The adjusting cover 42 presses against the pressure spring 22. The adjusting spring 43 is disposed between the adjusting cover 42 and the vacuum valve core 31. The adjusting spring 43 is fixedly connected to the adjusting cover 42 and abuts against the vacuum valve core 31. The elastic forces applied by the adjusting spring 43 and the vacuum spring 32 to the vacuum valve core 31 are in opposite directions. The pressure spring 22 and the vacuum spring 32 are always in a compressed state. The pressure spring 22 is used to control the opening pressure of the pressure valve core 21, and the vacuum spring 32 is used to control the opening pressure of the vacuum valve core 31. The adjusting spring 43 is normally in its original length state and is used to reduce the opening pressure of the vacuum valve core 31.

[0038] The pressure valve core 21 is used to connect the air hole 11 with the open end of the outer shell 1 by compressing the pressure spring 22 to achieve pressure relief. The vacuum valve core 31 is used to connect the air hole 11 with the open end of the outer shell 1 by compressing the vacuum spring 32 to achieve air replenishment. The first power component 41 is used to drive the adjusting cover 42 to press or release the pressure spring 22, and to drive the adjusting cover 42 to press the adjusting spring 43, so as to adjust the compression of the pressure spring 22 and the adjusting spring 43.

[0039] In use, under standard atmospheric pressure, when the cooling system is at a high temperature, the first power component 41 drives the adjusting cover 42 to press the pressure spring 22 and the adjusting spring 43, thereby increasing the elastic force of the pressure spring 22 and the adjusting spring 43, which increases the opening pressure of the pressure valve core 21, increases the pressure in the expansion tank, and makes the coolant less likely to generate boiling bubbles due to temperature rise, thus ensuring the cooling efficiency of the coolant.

[0040] In a standard atmospheric pressure environment, when the cooling system is in a low temperature state, the first power component 41 drives the adjustment cover 42 to relax the pressure spring 22, thereby reducing the elastic force of the pressure spring 22 and reducing the opening pressure of the pressure valve core 21. This improves the exhaust capacity of the expansion tank, making it easier to discharge the bubbles generated by the coolant under low temperature conditions.

[0041] When the pressure spring 22 is released, the adjustment cover 42 does not easily apply elastic force to the vacuum valve core 31 through the adjustment spring 43, so that the opening pressure of the vacuum valve core 31 can remain unchanged. Thus, in a standard atmospheric pressure environment, the expansion tank can maintain a stable gas replenishment pressure when the cooling system is at a low temperature.

[0042] In a high-altitude, low-pressure environment, the first power component 41 drives the adjustment cover 42 to press the pressure spring 22 and the adjustment spring 43. The elastic force of the adjustment spring 43 acts on the vacuum valve core 31, which partially cancels out the elastic force of the vacuum spring 32, thereby increasing the opening pressure of the pressure valve core 21 and decreasing the opening pressure of the vacuum valve core 31. The increased opening pressure of the pressure valve core 21 can raise the boiling point of the coolant in a high-altitude environment, making the coolant less likely to boil. The decreased opening pressure of the vacuum valve core 31 can reduce the air replenishment pressure of the expansion tank, making it easier for the expansion tank to replenish air in a high-altitude environment.

[0043] Based on the above analysis, by adjusting the elastic force of the pressure spring 22 and the adjusting spring 43, the air pressure in the expansion tank can adapt to different operating conditions and driving environments, thereby enabling the pressure of the expansion tank to be adaptively adjusted based on the environment and operating conditions.

[0044] Reference Figure 2 In order to ensure a stable airflow channel between the air hole 11 and the opening end of the outer shell 1 after the vacuum valve core 31 is opened, the pressure valve core 21 includes a core plate 211 and a valve cylinder 212. The core plate 211 is annular and slidably connected to the outer shell 1. The valve cylinder 212 is fixedly connected to the core plate 211 and is coaxially arranged with the core plate 211. The pressure spring 22 is sleeved on the valve cylinder 212. The vacuum valve core 31 is located inside the core plate 211. Multiple vacuum holes 213 are opened on the valve cylinder 212 around the axial direction.

[0045] The vacuum hole 213 enables stable communication between the air hole 11 and the central area of ​​the core plate 211. When the vacuum valve core 31 is opened, the air hole 11 can stably replenish air to the expansion tank through the vacuum hole 213 via the central area of ​​the core plate 211.

[0046] Specifically, refer to Figure 2The first power component 41 is connected to the first screw 44, and the first screw 44 is threaded with a first slide rod 45. The first slide rod 45 is rectangular and slides through the outer shell 1. The first slide rod 45 is fixedly connected to the adjusting cover 42. The first power component 41 is used to drive the first screw 44 to rotate. In this embodiment, the first power component 41 is a motor. The first power component 41 is fixedly connected to the outer shell 1, and the output shaft of the first power component 41 is fixedly connected to the first screw 44.

[0047] The first power component 41 can drive the first slide rod 45 to slide via the first screw 44, making it easy for the first slide rod 45 to stably drive the adjustment cover 42 to move, thereby making it easy to precisely control the movement stroke of the adjustment cover 42.

[0048] Reference Figure 2 In a standard atmospheric pressure environment, when the cooling system is at a high temperature, the adjustment of the pressure spring 22 by the adjustment cover 42 will simultaneously reduce the elastic force of the vacuum spring 32. Although the expansion tank is not prone to generating negative pressure under the condition of thermal expansion of the coolant, in order to ensure that the pressure adjustment of the pressure spring 22 does not affect the elastic force of the vacuum spring 32, the air hole 11 is located at the end of the outer shell 1. A connecting component 5 is provided on the inner wall of the outer shell 1. The connecting component 5 is used to connect the air hole 11 and the opening end of the outer shell 1 after the pressure valve core 21 compresses the pressure spring 22. A second adjustment component 6 is provided inside the outer shell 1. The second adjustment component 6 is used to adjust the amount of compression of the pressure spring 22 by the pressure valve core 21 when the air hole 11 is connected to the opening end of the outer shell 1.

[0049] In a standard atmospheric pressure environment, when the cooling system is at a high temperature, the pressure valve core 21 increases the compression of the pressure spring 22 when the second adjusting component 6 adjusts the air hole 11 and the opening end of the outer shell 1. When the pressure valve core 21 compresses the pressure spring 22 under air pressure and reaches the pressure relief requirement, the connecting component 5 can connect the air hole 11 and the opening end of the outer shell 1 to relieve pressure. Thus, without changing the position of the adjusting cover 42, that is, without compressing the adjusting spring 43, the pressure relief pressure of the pressure valve core 21 can be increased through the cooperation of the second adjusting component 6 and the connecting component 5.

[0050] In high-altitude, low-pressure environments, when the adjustment of the pressure spring 22 or the vacuum spring 32 by the adjustment cover 42 reaches its limit, i.e., when it is impossible to further increase the elastic force of the pressure spring 22 or the opening pressure of the vacuum valve core 31 by the adjustment cover 42, the compression of the pressure spring 22 can be further increased by the cooperation of the second adjustment component 6 and the conduction component 5, so as to further increase the pressure relief pressure of the opening of the pressure valve core 21.

[0051] Specifically, refer to Figure 2 The conductive assembly 5 includes a sealing plate 51 and a second power component 52.

[0052] The sealing plate 51 is slidably disposed in the adjusting groove 12 opened on the inner side wall of the housing 1. The sealing plate 51 is used to seal against the pressure valve core 21. The second power component 52 is connected to the housing 1 and the sealing plate 51 respectively. The second power component 52 is used to drive the sealing plate 51 to slide.

[0053] Since the sealing plate 51 can seal against the pressure valve core 21, air leakage is unlikely to occur at the sealing plate 51 during the sliding process of the pressure valve core 21. When the pressure valve core 21 does not compress the pressure spring 22 to reach the preset compression amount, the air pressure in the expansion tank is not likely to decrease. When the pressure valve core 21 compresses the pressure spring 22 to reach the preset compression amount, the second power component 52 can drive the sealing plate 51 to slide away from the pressure valve core 21, so that the opening end of the outer shell 1 can be connected with the air hole 11 through the adjusting slide groove 12, so that the expansion tank can be depressurized, thereby making the opening pressure adjustment of the pressure valve core 21 more flexible.

[0054] Specifically, refer to Figure 2 The second power component 52 is connected to the second screw 53, and the second screw 53 is threaded with a second slide rod 54. The second slide rod 54 is rectangular and slides through the outer shell 1. The second slide rod 54 is fixedly connected to the sealing plate 51. The second power component 52 is used to drive the second screw 53 to rotate. In this embodiment, the second power component 52 is a motor. The second power component 52 is fixedly connected to the outer shell 1, and the output shaft of the second power component 52 is fixedly connected to the second screw 53.

[0055] The second power component 52 can drive the second slide bar 54 to slide via the second screw 53, so that the second slide bar 54 can stably drive the sealing plate 51 to slide, thereby facilitating the control of the opening or closing of the sealing plate 51.

[0056] Specifically, refer to Figure 2 A rubber sealing layer 55 is fixed on the groove wall where the adjusting slide 12 contacts the sealing plate 51 and on the plate surface where the sealing plate 51 contacts the pressure valve core 21.

[0057] By setting the rubber sealing layer 55, gas leakage is less likely to occur between the sealing plate 51 and the groove wall of the adjusting slide 12, as well as between the sealing plate 51 and the pressure valve core 21.

[0058] Specifically, refer to Figure 2 The second adjustment component 6 includes a limit switch 61, a third slide rod 62, and a third power component 63.

[0059] Limit switch 61 is located inside housing 1 and on the side of pressure valve core 21 near air port 11. Limit switch 61 is used to output position signal. Third slide rod 62 is connected to limit switch 61. Third slide rod 62 is rectangular rod and slides through housing 1. Third power component 63 is connected to third slide rod 62 and housing 1 respectively. Third power component 63 is used to drive third slide rod 62 to slide.

[0060] Reference Figure 2 and Figure 3 In this embodiment, the third power component 63 is a motor, which is fixedly connected to the outer casing 1. The output shaft of the third power component 63 is connected to the third slide rod 62 through gear and rack transmission.

[0061] Reference Figure 2 The limit switch 61 and the conduction component 5 are electrically connected to a controller. The controller responds to the position signal and is used to control the conduction component 5 to conduct the vent 11 to the opening end of the housing 1. The controller is not shown in the figure.

[0062] In this embodiment, the controller is electrically connected to the second power member 52 of the conduction component 5. The controller responds to the position signal output by the limit switch 61 and is used to control the action of the second power member 52.

[0063] When the pressure valve core 21 compresses the pressure spring 22 under pneumatic drive, the pressure valve core 21 can gradually approach the limit switch 61. When the pressure valve core 21 touches the limit switch 61, the limit switch 61 can activate the second power component 52 through the controller, so that the second power component 52 can drive the sealing plate 51 to open, so as to release the pressure of the expansion tank. The third slide rod 62 can be slid by the third power component 63 to adjust the position of the limit switch 61, so as to adjust the amount of compression of the pressure spring 22 when the pressure valve core 21 is opened without compressing the adjusting spring 43.

[0064] The implementation principle of the pressure regulating mechanism of a new energy expansion tank in this application embodiment is as follows: When the cooling system is under normal pressure and high temperature conditions, the position of the limit switch 61 is adjusted by the third power component 63 to increase the opening pressure of the pressure valve core 21, making it less likely for the coolant to generate boiling bubbles; when the cooling system is under normal pressure and low temperature conditions, the adjustment cover 42 is driven by the first power component 41 to relax the pressure spring 22, thereby reducing the opening pressure of the pressure valve core 21 and making it easier for the bubbles generated by the coolant to be discharged; when the cooling system is under high altitude and low air pressure conditions, the adjustment cover 42 is driven by the first power component 41 to press the pressure spring 22 and the adjustment spring 43, thereby increasing the opening pressure of the pressure valve core 21 and reducing the opening pressure of the vacuum valve core 31, so that the pressure of the expansion tank can be adaptively adjusted based on the environment and operating conditions.

[0065] This application also discloses an intelligent variable capacity and variable pressure expansion water tank.

[0066] Reference Figure 4 A smart variable capacity and variable pressure expansion tank includes a tank body 7, a capacity adjustment mechanism 8, and the pressure adjustment mechanism of the aforementioned new energy expansion tank.

[0067] Reference Figure 5 A partition 71 is fixedly installed inside the water tank 7. The partition 71 separates the water tank 7 into a main chamber 711 and a secondary chamber 712. A connecting water pipe 72 for connecting to the cooling system is connected to the main chamber 711.

[0068] The regulating mechanism 8 includes a water pump 81 fixed on the outer wall of the water tank 7. The water pump 81 is a bidirectional pump. The two ports of the water pump 81 are respectively connected to a first water pipe 82 and a second water pipe 83. The first water pipe 82 is fixedly inserted into the main chamber 711, and the second water pipe 83 is fixedly inserted into the auxiliary chamber 712.

[0069] Reference Figure 2 and Figure 5 The outer shell 1 is connected to the main chamber 711, and the pressure valve core 21 abuts against the outer wall of the water tank 7. Under normal conditions, the pressure valve core 21 and the vacuum valve core 31 seal the connection between the outer shell 1 and the main chamber 711.

[0070] When the coolant expands due to high temperature, the water pump 81 can draw the coolant from the main chamber 711 into the auxiliary chamber 712 through the first water pipe 82 and the second water pipe 83. When the coolant contracts due to low temperature, the water pump 81 can draw the coolant from the auxiliary chamber 712 into the main chamber 711 through the second water pipe 83 and the first water pipe 82. This makes it easy to adjust the volume of coolant in the main chamber 711. Combined with the pressure valve core 21 and the vacuum valve core 31 to adjust the air pressure in the main chamber 711, the volume and pressure of the expansion tank can be adaptively adjusted based on the environment and operating conditions.

[0071] Reference Figure 5 In order to intelligently adjust the volume and pressure of the expansion tank, the present application provides an intelligent variable volume and pressure expansion tank, which also includes a detection mechanism 9. The detection mechanism 9 includes a first liquid level sensor 91, a second liquid level sensor 92, and a pressure sensor 93.

[0072] The first liquid level sensor 91 is installed in the main chamber 711 and is used to output the first liquid level signal. The second liquid level sensor 92 is installed in the auxiliary chamber 712 and is used to output the second liquid level signal. The air pressure sensor 93 is installed in the main chamber 711 and is used to output the air pressure signal.

[0073] The first liquid level sensor 91, the second liquid level sensor 92, and the air pressure sensor 93 are all electrically connected to a central control unit. The central control unit is electrically connected to the water pump 81 and the first power component 41, respectively. The central control unit responds to the first liquid level signal output by the first liquid level sensor 91 and the second liquid level signal output by the second liquid level sensor 92, and is used to control the operation of the water pump 81 to intelligently regulate the volume of coolant in the main chamber 711. The central control unit also responds to the air pressure signal output by the air pressure sensor 93, and is used to control the operation of the first power component 41 to intelligently regulate the air pressure in the main chamber 711. The central control unit is not shown in the figure.

[0074] In this embodiment, the central control unit is also electrically connected to the third power unit 63. The central control unit responds to the air pressure signal output by the air pressure sensor 93 and is used to control the operation of the third power unit 63. A water supply pipe 73 for water replenishment is connected to the main chamber 711.

[0075] When the first liquid level signal is greater than the high preset value and the second liquid level signal is not greater than the high preset value, the central control unit can control the water pump 81 to pump the coolant in the main chamber 711 into the auxiliary chamber 712. When the first liquid level signal is less than the low preset value and the second liquid level signal is not less than the low preset value, the central control unit can control the water pump 81 to pump the coolant in the auxiliary chamber 712 into the main chamber 711. When the first liquid level signal is less than the low preset value and the second liquid level signal is also less than the low preset value, water replenishment operation needs to be performed in the main chamber 711 through the water replenishment pipe 73.

[0076] When the air pressure signal is greater than the preset pressure relief value but no pressure is released, the central control unit controls the first power component 41 to loosen the pressure spring 22 on the adjusting cover 42, thereby reducing the opening pressure of the pressure valve core 21. When the air pressure signal is less than the preset pressure relief value and pressure has been released, the central control unit controls the first power component 41 to press the pressure spring 22 on the adjusting cover 42, thereby increasing the opening pressure of the pressure valve core 21. Alternatively, the central control unit controls the third power component 63 to increase the distance between the limit switch 61 and the core plate 211 of the pressure valve core 21, thereby increasing the opening pressure of the pressure valve core 21.

[0077] Based on the above analysis, the central control unit can intelligently control the operation of the water pump 81, the first power component 41, and the third power component 63 through the first liquid level sensor 91, the second liquid level sensor 92, and the air pressure sensor 93, thereby realizing intelligent regulation of the volume and pressure of the expansion tank.

[0078] Reference Figure 5 To facilitate visual inspection of the liquid level in the main chamber 711 and the auxiliary chamber 712, a level gauge 94 is connected to both the main chamber 711 and the auxiliary chamber 712. The tube wall of the level gauge 94 is made of a transparent material, such as transparent glass.

[0079] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pressure regulating mechanism for a new energy expansion tank, characterized in that: The assembly includes a housing (1), a pressure component (2), a vacuum component (3), and a first adjustment component (4). The housing (1) has an air hole (11). The pressure component (2) includes a pressure valve core (21) and a pressure spring (22). The pressure valve core (21) is slidably disposed inside the housing (1), and the pressure spring (22) is disposed on the pressure valve core (21). The vacuum component (3) includes a vacuum valve core (31) and a vacuum spring (32). The vacuum valve core (31) is slidably disposed on the pressure valve core (21), and the vacuum spring (32) is disposed between the vacuum valve core (31) and the pressure valve core (21). The first adjustment component (4) includes a first power component (41), an adjustment cover (42), and an adjustment spring (43). The first power component (41) is connected to the adjustment cover (42) and the outer shell (1) respectively. The adjustment cover (42) presses against the pressure spring (22). The adjustment spring (43) is disposed between the adjustment cover (42) and the vacuum valve core (31). The elastic force applied by the adjustment spring (43) and the vacuum spring (32) to the vacuum valve core (31) is in opposite directions. The pressure spring (22) and the vacuum spring (32) are always in a compressed state. The adjustment spring (43) is normally in its original length state. The pressure valve core (21) is used to connect the air hole (11) with the opening end of the outer shell (1) by compressing the pressure spring (22), the vacuum valve core (31) is used to connect the air hole (11) with the opening end of the outer shell (1) by compressing the vacuum spring (32), and the first power member (41) is used to drive the adjustment cover (42) to press or release the pressure spring (22), and to drive the adjustment cover (42) to press the adjustment spring (43); The air hole (11) is located at the end of the outer shell (1). A connecting component (5) is provided on the inner wall of the outer shell (1). The connecting component (5) is used to connect the air hole (11) and the opening end of the outer shell (1) after the pressure valve core (21) compresses the pressure spring (22). A second adjusting component (6) is provided inside the outer shell (1). The second adjusting component (6) is used to adjust the amount of compression of the pressure valve core (21) on the pressure spring (22) when the air hole (11) is connected to the opening end of the outer shell (1). The conductive assembly (5) includes a sealing plate (51) and a second power component (52). The sealing plate (51) is slidably disposed in an adjusting groove (12) opened on the inner side wall of the housing (1). The sealing plate (51) is used to seal against the pressure valve core (21). The second power component (52) is connected to the housing (1) and the sealing plate (51) respectively. The second power component (52) is used to drive the sealing plate (51) to slide. The second regulating component (6) includes a limit switch (61), a third slide rod (62), and a third power component (63). The limit switch (61) is located inside the housing (1) and on the side of the pressure valve core (21) near the air hole (11). The limit switch (61) is used to output a position signal. The third slide rod (62) is connected to the limit switch (61) and slides through the housing (1). The third power component (63) is connected to the third slide rod (62) and the housing (1) respectively. The third power component (63) is used to drive the third slide rod (62) to slide. The limit switch (61) and the conducting component (5) are electrically connected to a controller. The controller responds to the position signal and is used to control the conducting component (5) to conduct the air hole (11) and the opening end of the housing (1).

2. The pressure regulating mechanism of a new energy expansion tank according to claim 1, characterized in that: The first power component (41) is connected to a first screw (44), and a first slide rod (45) is threaded on the first screw (44). The first slide rod (45) slides through the outer shell (1) and is connected to the adjusting cover (42). The first power component (41) is used to drive the first screw (44) to rotate.

3. The pressure regulating mechanism of a new energy expansion tank according to claim 1, characterized in that: The second power component (52) is connected to the second screw (53), and the second screw (53) is threaded with the second slide rod (54). The second slide rod (54) slides through the outer shell (1) and is connected to the sealing plate (51). The second power component (52) is used to drive the second screw (53) to rotate.

4. The pressure regulating mechanism of a new energy expansion tank according to claim 1, characterized in that: A rubber sealing layer (55) is provided on the groove wall where the adjusting slide (12) contacts the sealing plate (51) and on the plate surface where the sealing plate (51) contacts the pressure valve core (21).

5. The pressure regulating mechanism of a new energy expansion tank according to claim 1, characterized in that: The pressure valve core (21) includes a core plate (211) and a valve cylinder (212). The core plate (211) is annular and slidably connected to the outer shell (1). The valve cylinder (212) is connected to the core plate (211). The pressure spring (22) is sleeved on the valve cylinder (212). The vacuum valve core (31) is located inside the core plate (211). A vacuum hole (213) is opened on the valve cylinder (212).

6. An intelligent variable-capacity and variable-pressure expansion water tank, characterized in that: It includes a water tank body (7), a volume adjustment mechanism (8), and a pressure adjustment mechanism for a new energy expansion water tank as described in any one of claims 1-5; A partition (71) is provided inside the water tank (7). The partition (71) separates the water tank (7) into a main chamber (711) and a secondary chamber (712). A connecting water pipe (72) for connecting to the cooling system is connected to the main chamber (711). The regulating mechanism (8) includes a water pump (81) installed on the outer wall of the water tank (7). The water pump (81) is a bidirectional pump. The two ports of the water pump (81) are respectively connected to a first water pipe (82) and a second water pipe (83). The first water pipe (82) is inserted into the main chamber (711), and the second water pipe (83) is inserted into the auxiliary chamber (712). The outer shell (1) is connected to the main chamber (711), and the pressure valve core (21) abuts against the outer wall of the water tank (7).

7. The intelligent variable-capacity and variable-pressure expansion water tank according to claim 6, characterized in that: It also includes a detection mechanism (9), which includes a first liquid level sensor (91), a second liquid level sensor (92), and a pressure sensor (93). The first liquid level sensor (91) is installed in the main chamber (711) and is used to output a first liquid level signal. The second liquid level sensor (92) is installed in the auxiliary chamber (712) and is used to output a second liquid level signal. The pressure sensor (93) is installed in the main chamber (711) and is used to output a pressure signal. The first liquid level sensor (91), the second liquid level sensor (92), and the pressure sensor (93) are electrically connected to a central control unit. The central control unit is electrically connected to the water pump (81) and the first power component (41), respectively. The central control unit responds to the first liquid level signal and the second liquid level signal and is used to control the operation of the water pump (81). The central control unit responds to the pressure signal and is used to control the operation of the first power component (41).

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