A supercharging device and a power system

Abstract

The present invention discloses a supercharging device and a power system, relating to the technical field of supercharging devices. The device includes a supercharger main body, and a first gas pipeline is connected to its rear port. The first gas pipeline is used to communicate with an engine; a voltage stabilizing cavity assembly, in which a pressure balancing part is arranged in the cavity. The pressure balancing part divides the cavity in the voltage stabilizing cavity assembly into a first cavity and a second cavity. The first cavity is communicated with the first gas pipeline; the pressure balancing part can adjust the volumes of the first cavity and the second cavity through deformation, so that the pressures in the first cavity and the first gas pipeline are balanced with the pressure in the second cavity. In the supercharging device in the embodiment of the present application, a voltage stabilizing cavity assembly is equipped, and two cavities with variable volumes are arranged therein, which realizes the protection of the supercharger while not discharging the gas in the high-pressure gas pipeline of the supercharger, ensuring good power performance.

Description

Technical Field

[0001] The present invention relates to the technical field of superchargers, and particularly to a supercharging device and a power system. Background Art

[0002] In recent years, in order to cope with the dual pressures of energy crisis and environmental protection, increasing power density through supercharging and developing small-displacement engines have become the main technical approaches of major automobile enterprises. Therefore, the application of turbocharging in diesel engines and even gasoline engines has been widely promoted to improve the efficiency of gasoline engines, increase power density, and reduce fuel consumption. However, when the engine decelerates rapidly after rapid acceleration, since the engine throttle is closed at this time, but the exhaust gas will drive the turbine to continue rotating, continuous intake air will cause the pressure at the rear end of the supercharger to soar, and the high-pressure gas reflux formed by the pressure difference will impact the turbine on the intake side. In the lightest case, it will cause the engine to surge, and in the worst case, it will cause the imbalance of the impeller balance, resulting in irreparable abnormal noise and permanent damage to the intake efficiency.

[0003] In the related art, in order to solve the above problems, a pressure relief system is equipped for the supercharger to protect the supercharger. When the pressure in the engine exceeds the standard, the high-pressure gas is directed to the front end of the supercharger to avoid the impact of the reflux high-pressure gas on the turbine of the supercharger. However, after the pressure relief system relieves the pressure, the high-pressure gas in the high-pressure pipeline is discharged, which in turn causes a short-term loss of engine power. The high-pressure pipeline is completely depressurized, and it takes a certain amount of time to replenish the air and establish the pressure again. During this short period, there are problems of insufficient intake air volume and power loss. Summary of the Invention

[0004] In view of the problem in the related art that in order to avoid the impact of high-pressure gas reflux on the supercharger, a pressure relief system is equipped for the supercharger to discharge the high-pressure gas, resulting in insufficient intake air volume and power loss problems in the engine during a short period.

[0005] In a first aspect, the present application provides a supercharging device, which includes: a supercharger main body and a pressure stabilizing cavity assembly; wherein,

[0006] The supercharger main body, the rear port of which is connected with a first air pipe, and the first air pipe is used to communicate with the engine;

[0007] The pressure stabilizing cavity assembly, in the cavity of which a pressure balancing part is arranged, the pressure balancing part divides the cavity in the pressure stabilizing cavity assembly into a first cavity and a second cavity, and the first cavity is communicated with the first air pipe; the pressure balancing part can adjust the volumes of the first cavity and the second cavity through deformation, so that the pressure in the first cavity and the first air pipe and the pressure in the second cavity are kept balanced.

[0008] In combination with the first aspect, in an embodiment of the present application, the pressure balancing part includes:

[0009] A balance film, which is made of an elastic material and is sealingly arranged between the first cavity and the second cavity;

[0010] The balance film is configured such that when there is a pressure difference between the first cavity and the second cavity, the balance film deforms under the action of the pressure difference to change the volumes of the first cavity and the second cavity until the pressures between the first cavity and the second cavity are balanced.

[0011] It can be understood that the balance film 41 made of an elastic material in this application makes a deformation feedback to the pressure difference, simply and effectively achieving the pressure balance between the first cavity 31 and the second cavity 32, and also absorbing or compensating the intake air volume of the first air delivery pipe 12 by expanding or reducing the volume of the first cavity 31.

[0012] In combination with the first aspect, in an embodiment of this application, the pressure balance part further includes:

[0013] A support sheet, which is sealingly installed in the voltage stabilizing cavity assembly, and the balance film is installed on the support sheet.

[0014] In combination with the first aspect, in an embodiment of this application, an installation opening is provided at the center of the support sheet, and the installation opening is sealingly connected to the balance film.

[0015] In combination with the first aspect, in an embodiment of this application, the support sheet is made of plastic and is vulcanized and formed with the balance film.

[0016] It can be understood that when the balance film 41 is stressed due to the pressure difference between the two sides of the balance film 41 caused by the first cavity 31 and the second cavity 32, the balance film 41 will deform and finally make the pressures of the two cavities balanced. The support sheet 42 can prevent local damage of the balance film 41 caused by uneven deformation.

[0017] In combination with the first aspect, in an embodiment of this application, the voltage stabilizing cavity assembly includes:

[0018] A first voltage stabilizing groove, in which the first cavity is provided, and the first cavity is communicated with the first air delivery pipe through a conduit;

[0019] A second voltage stabilizing groove, in which the second cavity is provided, and the slot opening of the second voltage stabilizing groove is detachably connected to the slot opening of the first voltage stabilizing groove.

[0020] It should be noted that setting the voltage stabilizing cavity assembly 3 into two detachable parts is convenient for assembly and improves work efficiency on the one hand. On the other hand, the second cavity 32 can be inflated and deflated separately to adjust its original pressure.

[0021] In combination with the first aspect, in one embodiment of the present application, a connecting pin is provided at the edge of the notch of the first pressure stabilizing groove, and a connecting hole is provided at the edge of the notch of the second pressure stabilizing groove. The connecting pin is threadedly connected to the connecting hole to lock the first pressure stabilizing groove and the second pressure stabilizing groove.

[0022] In combination with the first aspect, in one embodiment of the present application, the first pressure stabilizing groove is provided with a docking port. One end of the docking port communicates with the first cavity, and the other end is detachably connected to the conduit.

[0023] In combination with the first aspect, in one embodiment of the present application, an assembly portion is provided on the outer surface of the second pressure stabilizing groove. The second pressure stabilizing groove can be installed in the body beam box through the assembly portion.

[0024] It should be noted that both the pressure stabilizing cavity assembly 3 and the pressure balancing portion 4 are fixed inside the vehicle body longitudinal beam and cross beam, and their deformation will not interfere with other components.

[0025] In a second aspect, the present application provides a power system, which includes: the supercharging device as described in any one of the above.

[0026] The beneficial effects brought by the technical solutions provided in the embodiments of the present application include: In the embodiments of the present application, the supercharging device is equipped with a pressure stabilizing cavity assembly, which has two cavities with variable volumes. While protecting the supercharger, it will not discharge the gas in the high-pressure gas pipe of the supercharger, ensuring good power performance. Further, the pressure stabilizing cavity assembly of the present application adjusts the volume by changing the volume gradually through deformation. During the whole process, the pressure in the two cavities changes smoothly, without involving the relative movement of high-pressure gas, and no obvious air leakage sound will be generated, and there is no NVH problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the supercharging device in the embodiment of the present invention;

[0029] Figure 2 It is an exploded view of the pressure stabilizing cavity assembly and the pressure balancing portion in the embodiment of the present invention.

[0030] In the figure: 1. Supercharger body; 11. Rear port; 12. First air pipe; 13. Second air pipe; 14. Front port; 2. Engine; 3. Pressure stabilizing cavity assembly; 31. First cavity; 32. Second cavity; 33. First pressure stabilizing groove; 331. Connecting pin; 332. Docking port; 34. Second pressure stabilizing groove; 341. Connecting hole; 342. Assembly part; 4. Pressure balancing part; 41. Balancing membrane; 42. Support piece; 5. Duct; 6. Air filter; 7. Body beam box. Specific embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0032] The embodiments of the present invention will be further described in detail below with reference to the drawings. In related technologies, to avoid high-pressure gas reflux impacting the supercharger, a pressure relief system is equipped for the supercharger to discharge high-pressure gas, resulting in problems of insufficient intake air volume and power loss in the engine during a short period.

[0033] In a first aspect, as Figure 1 and Figure 2 shown, this application provides a supercharging device, which includes: a supercharger body 1 and a pressure stabilizing cavity assembly 3; wherein,

[0034] For the supercharger body 1, its rear port 11 is connected to a first air pipe 12, and the first air pipe 12 is used to communicate with the engine 2. For the pressure stabilizing cavity assembly 3, a pressure balancing part 4 is arranged in its cavity, and the pressure balancing part 4 divides the cavity in the pressure stabilizing cavity assembly 3 into a first cavity 31 and a second cavity 32. The first cavity 31 is communicated with the first air pipe 12; the pressure balancing part 4 can adjust the volumes of the first cavity 31 and the second cavity 32 through deformation so that the pressures in the first cavity 31 and the first air pipe 12 and the pressure in the second cavity 32 are kept balanced.

[0035] It should be noted that for the supercharging device in the embodiments of the present application, a pressure stabilizing cavity assembly 3 with a bypass branch is provided for the original supercharger pipeline, and the pressure is absorbed or compensated by changing the volume. The initial pressure in the pressure stabilizing cavity assembly 3 (the first cavity 31 and the second cavity 32) of the present application is consistent with the pressure in the first gas pipeline 12, so there is no large pressure difference between the two, and thus no air leakage sound will be generated. Further, since the pressure in the pressure stabilizing cavity assembly 3 remains constant and can compensate a part of the intake air volume of the first gas pipeline 12, not only will there be no power loss, but the power performance will also be enhanced. There is no need to be equipped with additional components such as a muffler and a pressure relief valve, and the cost investment is lower.

[0036] It is worth noting that the working principle of the above embodiments includes:

[0037] It can be known from Bernoulli's equation that:

[0038] pv = nrt

[0039] Where p represents the pressure, v represents the gas volume, n represents the amount of substance, r represents the gas constant, and t represents the absolute temperature. In the embodiments of the present application, rt is a constant value and the increase in n is obtained. It can be obtained that:

[0040] δV = δn * rt / p

[0041] Furthermore, it can be known that expanding the gas volume can effectively maintain the pressure.

[0042] In some specific embodiments, as Figure 2 shown, the pressure balancing part 4 includes: a balancing membrane 41;

[0043] The balancing membrane 41 is made of an elastic material and is hermetically arranged between the first cavity 31 and the second cavity 32;

[0044] The balancing membrane 41 is configured such that when there is a pressure difference between the first cavity 31 and the second cavity 32, the balancing membrane 41 deforms under the action of the pressure difference to change the volumes of the first cavity 31 and the second cavity 32 until the pressure between the first cavity 31 and the second cavity 32 is balanced.

[0045] It can be understood that the present application uses the balancing membrane 41 made of an elastic material to make a deformation feedback to the pressure difference, simply and effectively realizing the pressure balance between the first cavity 31 and the second cavity 32, and also absorbing or compensating the intake air volume of the first gas pipeline 12 by expanding or reducing the volume of the first cavity 31.

[0046] Further, as Figure 2As shown, the pressure balance part 4 further includes: a support sheet 42, which is hermetically installed in the voltage stabilizing cavity assembly 3, and the balance film 41 is installed on the support sheet 42. Optionally, an installation opening is provided at the center of the support sheet 42, and the installation opening is hermetically connected to the balance film 41.

[0047] In some preferred embodiments, the support sheet 42 is made of plastic. The balance film 41 is formed by vulcanizing an elastomer and is secondarily vulcanized with the support sheet 42.

[0048] It can be understood that when the balance film 41 is stressed due to the pressure difference between the first cavity 31 and the second cavity 32 on both sides, the balance film 41 will deform, and finally the pressures in the two cavities will reach equilibrium. The support sheet 42 can prevent local damage to the balance film 41 caused by uneven deformation.

[0049] In the above embodiments, the working principle of the pressure balance part 4 includes: the original pressure in the second cavity 32 is greater than the atmospheric pressure, and the balance film 41 deflects towards the first cavity 31 in the supply state. When high-pressure gas enters the first cavity 31 through the conduit 5, the balance film 41 deflects towards the second cavity 32, and the pressure in the second cavity 32 will increase until it reaches equilibrium with the pressure in the first cavity 31, and the balance film 41 stops deforming.

[0050] In some optional embodiments, as Figure 2 shown, the voltage stabilizing cavity assembly 3 includes: a first voltage stabilizing tank 33 and a second voltage stabilizing tank 34; where

[0051] The first voltage stabilizing tank 33 is provided with the first cavity 31 therein, and the first cavity 31 is communicated with the first gas pipeline 12 through the conduit 5; the second voltage stabilizing tank 34 is provided with the second cavity 32 therein, and the notch of the second voltage stabilizing tank 34 is detachably connected to the notch of the first voltage stabilizing tank 33. Optionally, the first voltage stabilizing tank 33 and the second voltage stabilizing tank 34 can be made of plastic.

[0052] It can be understood that setting the voltage stabilizing cavity assembly 3 into two detachable parts is convenient for assembly and improves work efficiency on the one hand. On the other hand, the second cavity 32 can be inflated and deflated separately to adjust its original pressure.

[0053] Specifically, a connecting pin 331 is provided at the edge of the notch of the first voltage stabilizing tank 33, a connecting hole 341 is provided at the edge of the notch of the second voltage stabilizing tank 34, and the connecting pin 331 is threadedly connected to the connecting hole 341 to lock the first voltage stabilizing tank 33 and the second voltage stabilizing tank 34.

[0054] It can be understood that the threaded connection method is convenient for operators to install, disassemble and maintain.

[0055] Further, the first pressure stabilizing tank 33 is provided with a docking port 332. One end of the docking port 332 communicates with the first cavity 31, and the other end is detachably connected to the conduit 5. The outer surface of the second pressure stabilizing tank 34 is provided with an assembly portion 342, and the second pressure stabilizing tank 34 is installed in the body beam box 7 through the assembly portion 342.

[0056] It should be noted that both the pressure stabilizing cavity assembly 3 and the pressure balance portion 4 are fixed inside the body longitudinal beam and cross beam box, and their deformation will not interfere with other components.

[0057] In some embodiments, a second air duct 13 is connected to the front port 14 of the supercharger body, and the second air duct 13 communicates with the air filter 6.

[0058] It should be noted that after the second pressure stabilizing tank 34 is assembled in the embodiments of the present application, the second cavity 32 inside it is a sealed cavity. Therefore, before assembly, the pressure inside the second cavity 32 needs to be preset and adjusted according to the target pressure of the supercharger (which can be achieved by inflating and deflating).

[0059] In addition, it is worth noting that the variable volume of the part where the pressure stabilizing cavity assembly 3 communicates with the second air duct 13 needs to be determined according to the equipment parameters and engine parameters.

[0060] Specifically, the present application provides a parameter determination method: the protection pressure P2 of the engine 2 is obtained through engine bench testing, the minimum pressure P1 acceptable for acceleration is measured by calibration, the volume V2 of the first air duct 12 at the rear end of the supercharger body 1 is measured by the liquid filling method. We set the maximum variable volume V1 of the pressure stabilizing cavity assembly 3, then there is the formula:

[0061] P2 * V2 = P1 * (V1 + V2)

[0062] To calculate the maximum variable volume V of the pressure stabilizing cavity assembly 3 1， The formula is obtained:

[0063] V1 = V2(P2 - P1) / P1

[0064] Wherein, V1 is the maximum variable volume of the pressure stabilizing cavity assembly 3, P2 is the protection pressure of the engine 2, P1 is the minimum pressure acceptable for acceleration, and V2 is the volume of the first air duct 12 at the rear end of the supercharger body 1.

[0065] Preferably, in order to improve the safety factor, a safety factor of 20% is added. That is, the following formula is used to calculate and design V1.

[0066] V1 = 1.2 * V2(P2 - P1) / P1

[0067] It can be understood that in the embodiment of the present application, a pressure stabilizing cavity assembly is provided in the supercharging device, which has two cavities with variable volumes. While protecting the supercharger, it does not discharge the gas in the high-pressure gas pipe of the supercharger, ensuring good power performance. Further, the pressure stabilizing cavity assembly of the present application adjusts the volume by gradually changing the shape. During the whole process, the pressure in the two cavities changes smoothly, without involving the movement of relatively high-pressure gas, and no obvious air leakage sound is generated, and there is no NVH problem.

[0068] In a second aspect, the present application provides a power system, which includes: an engine 2 and a supercharging device. The supercharging device includes: a supercharger main body 1 and a pressure stabilizing cavity assembly 3; wherein,

[0069] The supercharger main body 1 has a rear port 11 connected to a first air pipe 12, and the first air pipe 12 is used to communicate with the engine 2. The pressure stabilizing cavity assembly 3 is provided with a pressure balancing part 4 in its cavity. The pressure balancing part 4 divides the cavity in the pressure stabilizing cavity assembly 3 into a first cavity 31 and a second cavity 32. The first cavity 31 is communicated with the first air pipe 12; the pressure balancing part 4 can adjust the volumes of the first cavity 31 and the second cavity 32 by deformation, so that the pressure in the first cavity 31 and the first air pipe 12 and the pressure in the second cavity 32 are kept balanced.

[0070] It should be noted that in the supercharging device in the embodiment of the present application, a pressure stabilizing cavity assembly 3 with a side branch is provided for the original supercharger pipeline, and the pressure is absorbed or compensated by changing the volume. The initial pressure in the pressure stabilizing cavity assembly 3 (the first cavity 31 and the second cavity 32) of the present application is the same as the pressure in the first air pipe 12, so there is no large pressure difference between the two, and thus no air leakage sound will be generated. Further, since the pressure in the pressure stabilizing cavity assembly 3 is kept constant and can compensate a part of the intake air volume of the first air pipe 12, not only will there be no power loss, but the power performance will also be enhanced. There is no need to additionally equip components such as a muffler and a pressure relief valve, and the cost investment is lower.

[0071] It is worth noting that the working principle of the above embodiment includes:

[0072] It can be known from Bernoulli's equation that:

[0073] pv = nrt

[0074] Where p represents pressure, v represents gas volume, n represents the amount of substance, r represents the gas constant, and t represents absolute temperature. In the embodiment of the present application, rt is a constant value and the increase in n. It can be obtained that:

[0075] δV = δn * rt / p

[0076] Furthermore, it can be known that expanding the gas volume can effectively maintain the pressure.

[0077] In some specific embodiments, such as Figure 2 shown, the pressure balance part 4 includes: a balance membrane 41;

[0078] The balance membrane 41 is made of an elastic material and is sealingly arranged between the first cavity 31 and the second cavity 32;

[0079] The balance membrane 41 is configured such that when there is a pressure difference between the first cavity 31 and the second cavity 32, the balance membrane 41 deforms under the action of the pressure difference to change the volumes of the first cavity 31 and the second cavity 32 until the pressures between the first cavity 31 and the second cavity 32 are balanced.

[0080] It can be understood that in this application, the balance membrane 41 made of an elastic material makes a deformation feedback to the pressure difference, simply and effectively achieving the pressure balance between the first cavity 31 and the second cavity 32, and also absorbing or compensating the intake air volume of the first gas pipeline 12 by expanding or reducing the volume of the first cavity 31.

[0081] Furthermore, as Figure 2 shown, the pressure balance part 4 further includes: a support sheet 42, which is sealingly installed in the pressure stabilizing cavity assembly 3, and the balance membrane 41 is installed on the support sheet 42. Optionally, an installation opening is provided at the center of the support sheet 42, and the installation opening is sealingly connected to the balance membrane 41.

[0082] In some preferred embodiments, the support sheet 42 is made of plastic. The balance membrane 41 is formed by vulcanizing an elastomer and is secondarily vulcanized with the support sheet 42.

[0083] It can be understood that when the balance membrane 41 is stressed due to the pressure difference between the two sides of the balance membrane 41 caused by the first cavity 31 and the second cavity 32, the balance membrane 41 will deform and finally the pressures of the two cavities will reach balance. The support sheet 42 can prevent local damage of the balance membrane 41 caused by uneven deformation.

[0084] In the above embodiments, the working principle of the pressure balance part 4 includes: the original pressure in the second cavity 32 is greater than the atmospheric pressure, and in the supply state, the balance membrane 41 deforms towards the first cavity 31. When high-pressure gas enters the first cavity 31 through the conduit 5, the balance membrane 41 deforms towards the second cavity 32, and the pressure in the second cavity 32 will increase until it reaches balance with the pressure in the first cavity 31, and the balance membrane 41 stops deforming.

[0085] In some optional embodiments, as Figure 2 shown, the pressure stabilizing cavity assembly 3 includes: a first pressure stabilizing groove 33 and a second pressure stabilizing groove 34; wherein,

[0086] The first pressure stabilizing tank 33 is provided with the first cavity 31 therein, and the first cavity 31 is communicated with the first gas transmission pipe 12 through a conduit 5; a second pressure stabilizing tank 34 is provided with the second cavity 32 therein, and the notch of the second pressure stabilizing tank 34 is detachably connected to the notch of the first pressure stabilizing tank 33. Optionally, the first pressure stabilizing tank 33 and the second pressure stabilizing tank 34 can be made of plastic.

[0087] It can be understood that setting the pressure stabilizing cavity assembly 3 into two detachable parts is convenient for assembly and improves work efficiency on the one hand. On the other hand, the second cavity 32 can be inflated and deflated separately to adjust its original pressure.

[0088] Specifically, a connecting pin 331 is provided at the edge of the notch of the first pressure stabilizing tank 33, a connecting hole 341 is provided at the edge of the notch of the second pressure stabilizing tank 34, and the connecting pin 331 is threadedly connected to the connecting hole 341 to lock the first pressure stabilizing tank 33 and the second pressure stabilizing tank 34.

[0089] It can be understood that the threaded connection method is convenient for operators to install, disassemble and maintain.

[0090] Furthermore, the first pressure stabilizing tank 33 is provided with a docking port 332, one end of the docking port 332 is communicated with the first cavity 31, and the other end is detachably connected to the conduit 5. And an assembly part 342 is provided on the outer surface of the second pressure stabilizing tank 34, and the second pressure stabilizing tank 34 is installed in the vehicle body beam box 7 through the assembly part 342.

[0091] It should be noted that the pressure stabilizing cavity assembly 3 and the pressure balancing part 4 are both fixed in the vehicle body longitudinal beam and cross beam box, and their deformation will not interfere with other components.

[0092] In some embodiments, a second gas transmission pipe 13 is connected to the front port 14 of the supercharger body, and the second gas transmission pipe 13 is communicated with the air filter 6.

[0093] It should be noted that after the second pressure stabilizing tank 34 is assembled in the embodiment of the present application, the second cavity 32 therein is a sealed cavity, so the pressure in the second cavity 32 needs to be preset and adjusted (which can be achieved by inflation and deflation) according to the target pressure of the supercharger before assembly.

[0094] In addition, it is worth noting that the variable volume of the part where the pressure stabilizing cavity assembly 3 is communicated with the second gas transmission pipe 13 needs to be determined according to the equipment parameters and engine parameters.

[0095] In summary, the beneficial effects brought by the technical solutions provided in the embodiments of the present application include: In the related art, the pressure relief system of the supercharging device can only protect the supercharger and cannot take into account the power performance. In the embodiments of the present application, the supercharging device is equipped with a pressure stabilizing cavity assembly, which is provided with two cavities with variable volumes. While protecting the supercharger, it will not discharge the gas in the high-pressure gas pipe of the supercharger, ensuring good power performance. Further, in the related art, the relatively high-pressure gas in the pressure relief system of the supercharging device is released through the slit of the pressure relief valve, which will generate obvious air leakage sound and the NVH effect is poor. However, the pressure stabilizing cavity assembly of the present application realizes the adjustment of the volume by changing the volume gradually through deformation. During the whole process, the pressure in the two cavities changes smoothly, without involving the movement of relatively high-pressure gas, and no obvious air leakage sound will be generated, and there is no NVH problem. In addition, the pressure relief system of the supercharging device in the related art involves an electronically controlled pressure relief valve, which requires the whole vehicle to calibrate the opening timing of the pressure relief valve, with a complex structure and a long calibration cycle. The variable volume of the pressure stabilizing cavity assembly of the present application can be accurately calculated theoretically and verified through a bench test, which is an inherent characteristic of the product and does not require the whole vehicle to be calibrated, with a simple and reliable structure.

[0096] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0097] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0098] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A supercharging device, characterized in that, Comprising: A supercharger main body (1), a rear port (11) of which is connected with a first air pipe (12), and the first air pipe (12) is used for communicating with an engine (2); A voltage stabilizing cavity assembly (3), in which a pressure balancing part (4) is arranged. The pressure balancing part (4) divides the cavity in the voltage stabilizing cavity assembly (3) into a first cavity (31) and a second cavity (32). The first cavity (31) is communicated with the first air pipe (12). The pressure balancing part (4) includes: a balancing membrane (41), which is made of an elastic material and is hermetically arranged between the first cavity (31) and the second cavity (32). The voltage stabilizing cavity assembly (3) includes: a first voltage stabilizing groove (33) and a second voltage stabilizing groove (34). Wherein, the first cavity (31) is arranged in the first voltage stabilizing groove (33), and the first cavity (31) is communicated with the first air pipe (12) through a conduit (5). The second cavity (32) is arranged in the second voltage stabilizing groove (34), and the notch of the second voltage stabilizing groove (34) is detachably connected with the notch of the first voltage stabilizing groove (33); The balancing membrane (41) is configured such that when a pressure difference appears between the first cavity (31) and the second cavity (32), the balancing membrane (41) deforms under the action of the pressure difference to change the volumes of the first cavity (31) and the second cavity (32) until the pressure between the first cavity (31) and the second cavity (32) is balanced; A support sheet (42), which is hermetically installed in the voltage stabilizing cavity assembly (3), and the balancing membrane (41) is installed on the support sheet (42).

2. The supercharging device according to claim 1, characterized in that: An installation opening is formed at the center of the support sheet (42), and the installation opening is hermetically connected with the balancing membrane (41).

3. The supercharging device according to claim 1, wherein: The support sheet (42) is made of plastic and is vulcanized and formed with the balancing membrane (41).

4. The supercharging device according to claim 1, wherein: A connecting pin (331) is arranged at the edge of the notch of the first voltage stabilizing groove (33), and a connecting hole (341) is arranged at the edge of the notch of the second voltage stabilizing groove (34). The connecting pin (331) is threadedly connected with the connecting hole (341) to lock the first voltage stabilizing groove (33) and the second voltage stabilizing groove (34).

5. The supercharging device according to claim 1, wherein: The first voltage stabilizing groove (33) is provided with a docking port (332), one end of the docking port (332) is communicated with the first cavity (31), and the other end is detachably connected with the conduit (5).

6. The supercharging device according to claim 1, characterized in that: An assembly part (342) is arranged on the outer surface of the second voltage stabilizing groove (34), and the second voltage stabilizing groove (34) can be installed in a body beam box (7) through the assembly part (342).

7. A power system, characterized in that, Comprising: The supercharging device according to any one of claims 1-6.

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