Braking system and vehicle

Abstract

The embodiment of the application provides a kind of brake system and car, it is related to automobile technical field, wherein the brake system includes: brake master cylinder, build pressure unit, liquid storage tank, first filter assembly, first master cylinder isolation valve, second master cylinder isolation valve, pedal feeling simulation load and wheel brake circuit;The first liquid outlet and the second liquid outlet of the liquid storage tank are connected with the liquid inlet side of the first master cylinder isolation valve and the liquid inlet side of the second master cylinder isolation valve respectively through the first piston cavity and the second piston cavity, the third liquid outlet of the liquid storage tank is connected with the first liquid inlet pipe of the build pressure cavity in build pressure unit, and the first filter assembly is arranged in the liquid pipe of the first liquid outlet.The brake system is arranged with filter assembly in the liquid pipe of the liquid outlet of the liquid storage tank, realizes the filtration of the brake fluid flowing at the liquid outlet of the liquid storage tank, reduces the impurities in the brake fluid, prevents these impurities from affecting the sealing effect of the sealing element in the automobile brake system, thereby improves the stability of the brake system, and reduces the security risk.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, and in particular to a braking system and an automobile. Background Technology

[0002] A car's braking system is a device that applies a force to the wheels in the opposite direction of travel to achieve forced deceleration, stopping, or stable parking.

[0003] Current automotive braking systems typically transmit pressure through pressure media such as brake fluid. To prevent leakage of brake fluid and other pressure media within the automotive braking system, a large number of sealing elements are also installed.

[0004] However, with the current automotive braking system, as pressure media such as brake fluid are replenished and circulated, impurities may gradually be generated internally or mixed in externally in the hydraulic circuit of the automotive braking system. These impurities can easily affect the sealing effect of the sealing elements in the automotive braking system, thereby affecting the stability of the braking system and creating safety hazards. Utility Model Content

[0005] The main purpose of this invention is to propose a braking system and automobile to reduce impurities in the hydraulic circuit of the automobile braking system, improve the stability of the braking system, and reduce safety hazards.

[0006] In a first aspect, this utility model provides a braking system, including: a master cylinder, a pressure building unit, a reservoir, a first filter assembly, a first master cylinder isolation valve, a second master cylinder isolation valve, a pedal-feel simulated load, and a wheel braking circuit;

[0007] The first and second outlets of the reservoir are connected to the first and second piston chambers of the brake master cylinder, respectively; the inlet side of the first master cylinder isolation valve and the inlet side of the second master cylinder isolation valve are connected to the first and second piston chambers, respectively; and the inlet pipe of the pedal-feel simulated load is connected to the second piston chamber.

[0008] The third outlet of the storage tank is also connected to the first inlet pipe of the pressure building chamber in the pressure building unit, and the first outlet pipe of the pressure building chamber is respectively connected to the two sets of inlet pipes of the wheel brake circuit; the outlet side of the first master cylinder isolation valve and the outlet side of the second master cylinder isolation valve are also respectively connected to the two sets of inlet pipes of the wheel brake circuit.

[0009] The first filter assembly is disposed in the liquid pipe of the first liquid outlet.

[0010] In an optional embodiment, the liquid pipe of the first liquid outlet includes: a first upstream pipe near the first liquid outlet and a first downstream pipe near the first piston chamber, and the first filter assembly is disposed between the first upstream pipe and the first downstream pipe.

[0011] In an optional embodiment, the braking system further includes a diagnostic component, through which the second fluid outlet is connected to the second piston chamber.

[0012] In an optional embodiment, the braking system further includes: a second filter assembly; the liquid pipe of the second liquid outlet includes: a second upstream pipe near the second liquid outlet and a second downstream pipe near the diagnostic assembly, the second filter assembly being disposed between the second upstream pipe and the second downstream pipe.

[0013] In an optional embodiment, the braking system further includes a third filter assembly disposed in a fluid line between the diagnostic assembly and the second piston chamber.

[0014] In an optional embodiment, the braking system further includes a fourth filter assembly, wherein the liquid pipe of the third outlet includes a third upstream pipe near the third outlet and a third downstream pipe near the diagnostic assembly, and the fourth filter assembly is disposed between the third upstream pipe and the third downstream pipe.

[0015] The pressure relief outlet pipe of the wheel brake circuit is connected to the third upstream pipe in the liquid pipe of the third outlet.

[0016] In an optional implementation, the diagnostic component includes: a diagnostic valve and a diagnostic check valve; or,

[0017] The diagnostic component is a flow control valve with a one-way throttling function.

[0018] In an optional embodiment, the braking system further includes: a simulated load return fluid path, wherein the simulated load return fluid path is connected to the first upstream pipeline or the first downstream pipeline in the fluid pipe of the first outlet.

[0019] The second inlet pipe of the pressure-building chamber is connected to the simulated load return liquid path.

[0020] In an optional embodiment, the braking system further includes: a fifth filter assembly, wherein the fluid outlet line for the pedal-feel simulated load is also connected to the atmosphere via the fourth filter assembly; or,

[0021] The liquid outlet pipe of the pedal-feel simulated load is connected to the liquid return pipe of the simulated load.

[0022] Secondly, this utility model provides an automobile, including the braking system described in any of the foregoing embodiments.

[0023] The beneficial effects of this utility model are:

[0024] The braking system provided in this application includes: a brake master cylinder, a pressure-building unit, a reservoir, a first filter assembly, a first master cylinder isolation valve, a second master cylinder isolation valve, a pedal-feel simulated load, and a wheel braking circuit; wherein, the first and second outlets of the reservoir are respectively connected to the first and second piston chambers of the brake master cylinder, and the inlet side of the first and second master cylinder isolation valves are respectively connected to the first and second piston chambers; the inlet pipe of the pedal-feel simulated load is connected to the second piston chamber; the third outlet of the reservoir is also connected to the first inlet pipe of the pressure-building chamber in the pressure-building unit, and the first outlet pipe of the pressure-building chamber is respectively connected to two sets of inlet pipes of the wheel braking circuit; the outlet side of the first and second master cylinder isolation valves are also respectively connected to two sets of inlet pipes of the wheel braking circuit; the first filter assembly is disposed in the liquid pipe of the first outlet. This braking system filters the brake fluid flowing out of the reservoir and the brake fluid circulating back to the reservoir outlet by installing a filter component in the fluid pipe at the reservoir outlet. This reduces impurities in the brake fluid flowing out of the reservoir outlet, preventing these impurities from affecting the sealing effect of the seals in the braking system during circulation. This improves the stability of the braking system and reduces safety hazards. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a braking system structure provided in an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of a braking system structure provided in another embodiment of this application;

[0028] Figure 3 This is a schematic diagram of a braking system structure provided in yet another embodiment of this application;

[0029] Figure 4 This is a schematic diagram of a braking system structure provided in another embodiment of this application.

[0030] Reference numerals: 1-Reservoir tank; 11-First outlet; 12-Second outlet; 13-Third outlet; 2-Master brake cylinder; 21-First piston chamber; 22-Second piston chamber; 23-First piston; 24-Second piston; 3-Pressure building unit; 31-Pressure building chamber; 311-First outlet pipe; 312-First inlet pipe; 313-Second inlet pipe; 41-First filter assembly; 42-Second filter assembly; 43-Third filter assembly; 44-Fourth filter assembly; 45-... 5. Filter assembly; 51-First master cylinder isolation valve; 52-Second master cylinder isolation valve; 6-Pedal feel simulated load; 61-Simulated load return fluid circuit; 7-Wheel brake circuit; 81-First upstream pipeline; 82-First downstream pipeline; 83-Second upstream pipeline; 84-Second downstream pipeline; 85-Third upstream pipeline; 86-Third downstream pipeline; 9-Diagnostic assembly; 91-Diagnostic valve; 92-Diagnostic check valve; 93-Flow control valve with one-way throttling function; 10-Pressure relief outlet pipeline. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Current automotive braking systems primarily transmit braking pressure through pressure media such as brake fluid within their hydraulic circuits. To ensure stable circulation of the brake fluid within the hydraulic circuits, seals are typically installed at the connections of each hydraulic circuit, as well as at the connections between the hydraulic circuits and various chambers and components, to prevent brake fluid leakage.

[0034] However, as brake fluid continuously circulates within the hydraulic circuits of the vehicle's braking system, impurities such as metal powder and plastic powder that detach from the walls of the hydraulic lines or the inner walls of various chambers and components gradually mix into the brake fluid. Furthermore, when adding brake fluid to the reservoir, the added brake fluid itself may also contain impurities. These impurities can easily affect the sealing effect of the aforementioned seals, leading to brake fluid leakage at the sealed connections of the vehicle's braking system's hydraulic circuits. This, in turn, results in insufficient braking pressure in the vehicle's braking system, affecting the stability of the braking system and creating safety hazards.

[0035] To address the aforementioned problems in current automotive braking systems, this application proposes a braking system designed to reduce impurities in the hydraulic circuit of the automotive braking system, improve the stability of the braking system, and reduce safety hazards.

[0036] Figure 1 This is a schematic diagram of the braking system structure provided in one embodiment of this application, as shown below. Figure 1 As shown, the braking system includes: a master cylinder 2, a pressure building unit 3, a reservoir 1, a first filter assembly 41, a first master cylinder isolation valve 51, a second master cylinder isolation valve 52, a pedal-feel simulated load 6, and a wheel braking circuit 7.

[0037] The first outlet 11 and the second outlet 12 of the aforementioned liquid reservoir 1 are respectively connected to the first piston chamber 21 and the second piston chamber 22 of the aforementioned master cylinder 2. The inlet side of the aforementioned master cylinder isolation valve 51 and the inlet side of the aforementioned master cylinder isolation valve 52 are respectively connected to the first piston chamber 21 and the aforementioned second piston chamber 22. The inlet pipe of the aforementioned pedal feel simulated load 6 is connected to the aforementioned second piston chamber 22.

[0038] The third outlet 13 of the aforementioned storage tank 1 is also connected to the first inlet pipe 312 of the pressure-building chamber 31 in the aforementioned pressure-building unit 3. The first outlet pipe 311 of the aforementioned pressure-building chamber 31 is respectively connected to the two sets of inlet pipes of the aforementioned wheel brake circuit 7. The outlet side of the aforementioned first master cylinder isolation valve 51 and the outlet side of the aforementioned second master cylinder isolation valve 52 are also respectively connected to the two sets of inlet pipes of the aforementioned wheel brake circuit 7.

[0039] The first filter assembly 41 is disposed in the liquid pipe of the first liquid outlet 11.

[0040] For example, the aforementioned reservoir 1 may store pressure media such as brake fluid, and the pressure media such as brake fluid stored in the reservoir 1 may be added from an external source.

[0041] The aforementioned master cylinder 2 may include, in addition to the first piston chamber 21 and the second piston chamber 22, a first piston 23, a second piston 24, a push rod assembly, and a brake pedal. The brake pedal may be fixedly connected to one end of the push rod assembly, for example, through methods including but not limited to welding and hinged connections. The first piston 23 may be sealed to the first piston chamber 21, and the second piston 24 may be sealed to the second piston chamber 22. The sealing methods between the first piston 23 and the first piston chamber 21, and between the second piston 24 and the second piston chamber 22, may include, for example, annular seals and sliding surface seals.

[0042] The other end of the aforementioned push rod assembly can, for example, abut against the aforementioned second piston 24. When the driver depresses the brake pedal, the brake pedal can, for example, push the aforementioned second piston 24 through the aforementioned push rod assembly, causing the aforementioned second piston 24 to move within the aforementioned second piston chamber 22, while simultaneously causing the aforementioned first piston 23 to move within the aforementioned first piston chamber 21. The brake fluid or other pressure medium in the first piston chamber 21 and the second piston chamber 22 can, for example, be squeezed by the aforementioned first piston 23 and the second piston 24, respectively, and enter the aforementioned wheel brake circuit 7 through the aforementioned first master cylinder isolation valve 51 and the aforementioned second master cylinder isolation valve 52, to provide braking pressure to the wheel brake circuit 7 and complete braking. When the driver releases the brake pedal, the aforementioned first piston 23 and the second piston 24 can, for example, move to their initial positions under the action of elastic elements, and the brake fluid in the first piston chamber 21 and the second piston chamber 22 is no longer squeezed, and therefore no longer provides braking pressure to the wheel brake circuit 7. The brake fluid in the aforementioned reservoir 1 is replenished into the aforementioned first piston chamber 21 and the second piston chamber 22 through the aforementioned first outlet 11 and the second outlet 12, respectively.

[0043] Of course, the above are just possible examples. The specific connection method between the brake pedal and the push rod assembly, the connection method between the first piston 23 and the first piston chamber 21, the connection method between the second piston 24 and the second piston chamber 22, and the shape, size, material, etc. of the first piston 23, the first piston chamber 21, the second piston 24, the second piston chamber 22, the push rod assembly, the brake pedal, etc. can all be selected and determined according to the actual situation, and are not limited to the above.

[0044] Similarly, the pressure-building unit 3 described above may include, in addition to the pressure-building chamber 31, a pressure-building piston and an electric motor. When the braking pressure provided by the first piston chamber 21 and the second piston chamber 22 of the master cylinder 2 to the wheel braking circuit 7 is insufficient, the electric motor may, for example, drive the pressure-building piston to move within the pressure-building chamber 31. The brake fluid or other pressure medium in the pressure-building chamber 31 may, for example, be squeezed by the pressure-building piston and enter the wheel braking circuit 7 to assist in providing braking pressure to the wheel braking circuit 7, thereby assisting in completing the braking process. The operating principle of the pressure-building unit 3 can be referred to the relevant content of the master cylinder 2 described above, and will not be repeated here.

[0045] The two sets of inlet pipes in the aforementioned wheel brake circuit 7 can refer, for example, to the front wheel inlet pipe and the rear wheel inlet pipe of the vehicle. The front wheel inlet pipe can, for example, transmit braking pressure to achieve braking of the front wheels, and the rear wheel inlet pipe can, for example, transmit braking pressure to achieve braking of the rear wheels. After braking is completed, the brake fluid in the two sets of inlet pipes of the wheel brake circuit 7 can circulate through one or more outlet pipes to the aforementioned reservoir 1, or to the aforementioned first outlet 11, and / or the aforementioned second outlet 12, and / or the aforementioned third outlet 13. The specific number, location, and connection method of the outlet pipes can be adjusted and determined according to the actual situation and are not limited here. It should be noted that... Figure 1 The range of the wheel braking circuit 7 shown by the dashed line is only schematic and is not a precise division of the range of the wheel braking circuit 7.

[0046] The first filter component 41 mentioned above can be a filter screen or other device with a filtering function. The first filter component 41 can filter and collect impurities in the brake fluid or other pressure medium when it passes through. Of course, the type, size, material, specifications and other parameters of the first filter component 41 mentioned above can be adjusted and determined according to the actual situation, and are not limited here.

[0047] The aforementioned pedal feel simulation load 6 can, for example, be used to provide damping feel to the brake pedal, so that the driver can more accurately control the pressure and depth of the brake pedal and optimize the braking experience. However, the aforementioned pedal feel simulation load 6 is only a possible example, and the actual function of the pedal feel simulation load 6 is not limited to providing damping feel to the brake pedal.

[0048] The braking system provided in this embodiment includes: a master cylinder 2, a pressure-building unit 3, a reservoir 1, a first filter assembly 41, a first master cylinder isolation valve 51, a second master cylinder isolation valve 52, a pedal-feel simulation load 6, and a wheel braking circuit 7. The first outlet 11 and the second outlet 12 of the reservoir 1 are respectively connected to the first piston chamber 21 and the second piston chamber 22 of the master cylinder 2. The inlet side of the first master cylinder isolation valve 51 and the inlet side of the second master cylinder isolation valve 52 are respectively connected to the first piston chamber 21 and the second piston chamber 22. The inlet pipe of the pedal-feel simulation load 6 is connected to the second piston chamber 22. The third outlet 13 of the reservoir 1 is also connected to the first inlet pipe 312 of the pressure-building chamber 31 in the pressure-building unit 3. The first outlet pipe 311 of the pressure-building chamber 31 is connected to two sets of inlet pipes of the wheel braking circuit 7. The outlet side of the first master cylinder isolation valve 51 and the outlet side of the second master cylinder isolation valve 52 are respectively connected to two sets of inlet pipes of the wheel brake circuit 7. The first filter assembly 41 is disposed in the liquid pipe of the first outlet 11. By installing a filter assembly in the liquid pipe of the outlet of the reservoir 1, this braking system filters the brake fluid flowing out of the reservoir 1 and the brake fluid circulating back to the outlet of the reservoir 1 from the wheel brake circuit 7. This reduces impurities in the brake fluid flowing out of the liquid pipe of the outlet of the reservoir 1, preventing these impurities from affecting the sealing effect of the seals in the braking system during the circulation of the various liquid circuits, thereby improving the stability of the braking system and reducing safety hazards.

[0049] Please continue to refer to Figure 1 Based on the above embodiments, the liquid pipe of the first liquid outlet 11 may include: a first upstream pipe 81 near the first liquid outlet 11 and a first downstream pipe 82 near the first piston chamber 21, and the first filter assembly 41 is disposed between the first upstream pipe 81 and the first downstream pipe 82.

[0050] It is understood that the first filter assembly 41 is disposed between the first upstream pipeline 81 and the first downstream pipeline 82, for example, so that the brake fluid and other pressure medium can circulate from the first upstream pipeline 81 to the first downstream pipeline 82 after being filtered by the first filter assembly 41. This can prevent impurities in the brake fluid and other pressure medium from continuing to circulate in the brake fluid and other pressure medium.

[0051] Furthermore, such as Figure 1 As shown, based on the aforementioned embodiments, the braking system may further include: a diagnostic component 9, wherein the second fluid outlet 12 is connected to the second piston chamber 22 via the diagnostic component 9.

[0052] For example, the diagnostic component 9 may include one or more diagnostic valves, but is not limited thereto. If multiple diagnostic valves are included, they may be of the same or different types, models, and specifications. The specific selection can be determined according to actual needs and is not limited herein. The diagnostic component 9 described above can be used, for example, to diagnose faults in the braking system, and is not specifically limited herein.

[0053] Please continue to refer to Figure 1 Based on the above embodiments, the braking system further includes a second filter assembly 42. The liquid pipe of the second liquid outlet 12 includes a second upstream pipe 83 near the second liquid outlet 12 and a second downstream pipe 84 near the diagnostic assembly 9, and the second filter assembly 42 is disposed between the second upstream pipe 83 and the second downstream pipe 84.

[0054] Similar to the first filter assembly 41, the second filter assembly 42 is disposed between the second upstream pipeline 83 and the second downstream pipeline 84. For example, it can be used to allow the brake fluid or other pressurized medium to circulate from the second upstream pipeline 83 through the second filter assembly 42 to the second downstream pipeline 84, thus preventing impurities in the brake fluid or other pressurized medium from continuing to circulate within it. It is understood that the second filter assembly 42 can be, for example, a filter screen or other device with a filtering function. The second filter assembly 42 can filter and collect impurities in the brake fluid or other pressurized medium as it passes through. Of course, the type, size, material, and specifications of the second filter assembly 42 can be adjusted and determined according to actual conditions, and are not limited here.

[0055] Since the diagnostic component 9 may include one or more diagnostic valves 91, and impurities can easily be introduced into the pressure medium such as brake fluid during the process of diagnosing brake system malfunctions using the aforementioned one or more diagnostic valves 91, the brake system may further include a third filter component 43 based on the foregoing embodiment. Please refer to... Figure 1 The third filter component 43 can be installed in the liquid pipe between the diagnostic component 9 and the second piston chamber 22 to filter the brake fluid and other pressure media that are about to flow into the second piston chamber 22 after passing through the diagnostic component 9.

[0056] It is understood that the third filter component 43 may be a filter screen or other device with a filtering function. The third filter component 43 may filter and collect impurities in the brake fluid or other pressure medium when it passes through. Of course, the type, size, material, specifications and other parameters of the third filter component 43 may be adjusted and determined according to the actual situation, and are not limited here.

[0057] In addition, such as Figure 1 As shown, based on the aforementioned embodiments, the braking system may further include: a fourth filter assembly 44, and the liquid pipe of the third outlet 13 may include: a third upstream pipe 85 near the third outlet 13 and a third downstream pipe 86 near the diagnostic assembly 9, and the fourth filter assembly 44 is disposed between the third upstream pipe 85 and the third downstream pipe 86.

[0058] The pressure relief outlet pipe 10 of the wheel brake circuit 7 is connected to the third upstream pipe 85 in the liquid pipe of the third outlet 13.

[0059] Similar to the first filter assembly 41 and the second filter assembly 42, the third filter assembly 43 is disposed between the third upstream pipeline 85 and the third downstream pipeline 86. For example, it can be used to allow the brake fluid or other pressurized medium to circulate from the third upstream pipeline 85 through the third filter assembly 43 to the third downstream pipeline 86, thus preventing impurities in the brake fluid or other pressurized medium from continuing to circulate within it. It is understood that the third filter assembly 43 can be, for example, a filter screen or other device with a filtering function. The third filter assembly 43 can filter and collect impurities in the brake fluid or other pressurized medium as it passes through. Of course, the type, size, material, and specifications of the third filter assembly 43 can be adjusted and determined according to actual conditions, and are not limited here.

[0060] The pressure relief outlet pipe 10 of the aforementioned wheel brake circuit 7 may refer, for example, to the pipe through which the brake fluid in the two sets of inlet pipes of the aforementioned wheel brake circuit 7 circulates to the pipe of the aforementioned third outlet 13. The pressure relief outlet pipe 10 of the wheel brake circuit 7 is connected to the aforementioned third upstream pipe 85 in the pipe of the aforementioned third outlet 13. For example, the brake fluid and other pressure medium in the pressure relief outlet pipe 10 of the wheel brake circuit 7 can circulate to the aforementioned third downstream pipe 86 after being filtered by the aforementioned fourth filter assembly 44.

[0061] Figure 2 This is a schematic diagram of a braking system structure provided in another embodiment of this application. Optionally, please refer to... Figure 1 and Figure 2 Based on the foregoing embodiments, the diagnostic component 9 can be as follows: Figure 1 As shown, it includes: a diagnostic valve 91 and a diagnostic check valve 92. Alternatively, the diagnostic component 9 described above can be as follows: Figure 2 As shown, this is a flow control valve 93 with a one-way throttling function.

[0062] For example, the diagnostic component 9 includes a diagnostic valve 91 and a diagnostic check valve 92. For instance, the diagnostic valve 91 and the diagnostic check valve 92 can work together to diagnose faults in the braking system, thereby making the diagnostic results more accurate. If the diagnostic component 9 is a flow control valve 93 with a one-way throttling function, then the flow control valve 93 with the one-way throttling function may include, for example, a diagnostic check valve and a one-way throttling orifice, but is not limited thereto. The flow control valve 93 with the one-way throttling function can, for example, diagnose faults in the braking system based on the principle that a pressure difference is generated across the one-way throttling orifice when a pressure medium such as brake fluid passes through it. This simplifies the structure of the diagnostic component 9 and reduces the failure rate of the diagnostic system and the overall braking system.

[0063] Figure 3 For a schematic diagram of the braking system structure provided in another embodiment of this application, please refer to... Figure 1 and Figure 3 Based on the foregoing embodiments, the braking system may further include: a simulated load return fluid path 61, wherein the simulated load return fluid path 61 can be configured as follows: Figure 3 As shown, the first upstream pipe 81 in the liquid pipe connected to the first outlet 11, or the simulated load return liquid pipe 61, can also be as follows: Figure 1 As shown, it connects to the aforementioned first downstream pipeline 82.

[0064] The second inlet pipe 313 of the pressure-building chamber 31 is connected to the simulated load return liquid line 61.

[0065] It is understood that when the simulated load return fluid path 61 is connected to the first upstream pipeline 81 in the fluid pipe of the first outlet 11, the pressure medium such as brake fluid in the simulated load return fluid path 61 can circulate to the first downstream pipeline 82 after being filtered by the first filter component 41. When the simulated load return fluid path 61 is connected to the first downstream pipeline 82 in the fluid pipe of the first outlet 11, the pressure medium such as brake fluid in the simulated load return fluid path 61 does not circulate to the first downstream pipeline 82 without being filtered by the first filter component 41. Whether the simulated load return fluid path 61 is connected to the first upstream pipeline 81 or the first downstream pipeline 82 can be determined, for example, based on the impurity content of the pressure medium such as brake fluid in the simulated load return fluid path 61 and the filtration capacity of the first filter component 41, but is not limited thereto.

[0066] For example, the second inlet pipe 313 of the pressure-building chamber 31 is connected to the simulated load return fluid line 61. For instance, when the brake fluid in the pressure-building chamber 31 is insufficient, the brake fluid and other pressure media in the simulated load return fluid line 61 can be partially diverted and enter the pressure-building chamber 31 through the second inlet pipe 313 to replenish the brake fluid and other pressure media in the pressure-building chamber 31. Of course, the above is only a possible example. The specific effect of connecting the second inlet pipe 313 of the pressure-building chamber 31 to the simulated load return fluid line 61 is not limited to this. It is understood that the brake fluid and other pressure media in the simulated load return fluid line 61 can only enter the pressure-building chamber 31 through the second inlet pipe 313 under certain operating conditions of the pressure-building chamber 31. The specific operating conditions under which the pressure-building chamber 31 is activated can be adjusted and determined according to the actual situation.

[0067] Figure 4 For a schematic diagram of the braking system structure provided in another embodiment of this application, please refer to... Figure 4 ,exist Figure 1 Based on the embodiments, the above-mentioned braking system further includes: a fifth filter component 45, such as Figure 4 As shown, the liquid outlet pipe of the aforementioned pedal-feel simulated load 6 is also connected to the atmosphere through the aforementioned fifth filter assembly 45. Alternatively, as... Figure 1 As shown, the liquid outlet pipe of the aforementioned pedal-feel simulated load 6 is connected to the aforementioned simulated load return liquid pipe 61.

[0068] For example, if the outlet pipe of the aforementioned pedal-feel simulated load 6 is connected to the atmosphere through the aforementioned fifth filter assembly 45, then, for example, the brake fluid and other pressure media that have passed through the pedal-feel simulated load 6 can be discharged into the atmosphere through the outlet pipe of the pedal-feel simulated load 6. The aforementioned fifth filter assembly 45 can, for example, filter the brake fluid and other pressure media discharged from the outlet pipe of the pedal-feel simulated load 6 to a state free from environmental pollution or to a state that meets relevant emission standards, thereby reducing the filtration workload of the aforementioned first filter assembly 41 or reducing the overall amount of impurities in the braking system, thereby solving the problem of impurities generated by the simulated load entering the aforementioned first piston chamber 21, second piston chamber 22, etc.

[0069] If the outlet pipe of the aforementioned pedal-feel simulated load 6 is connected to the aforementioned simulated load return pipe 61, then, for example, the brake fluid or other pressure medium passing through the pedal-feel simulated load 6 can circulate through the aforementioned simulated load return pipe 61 to the aforementioned first upstream pipe 81 or the aforementioned first downstream pipe 82, thereby saving brake fluid or other pressure medium. The outlet pipe of the aforementioned pedal-feel simulated load 6 is also connected to the atmosphere through the aforementioned fifth filter assembly 45, or connected to the aforementioned simulated load return pipe 61. This can be determined, for example, based on the impurity content in the brake fluid or other pressure medium passing through the pedal-feel simulated load 6 and the filtration capacity of the aforementioned first filter assembly 41, but is not limited thereto.

[0070] In addition, this application embodiment also provides a car, which may include the braking system described in the foregoing embodiments. Optionally, the car may be a new energy vehicle, an intelligent vehicle, etc., and no specific limitation is made here.

[0071] It is understood that the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A braking system, characterized in that, include: Brake master cylinder, pressure building unit, first filter assembly of reservoir, first master cylinder isolation valve, second master cylinder isolation valve, pedal feel simulated load, and wheel braking circuit; The first and second outlets of the reservoir are connected to the first and second piston chambers of the brake master cylinder, respectively; the inlet side of the first master cylinder isolation valve and the inlet side of the second master cylinder isolation valve are connected to the first and second piston chambers, respectively; and the inlet pipe of the pedal-feel simulated load is connected to the second piston chamber. The third outlet of the storage tank is also connected to the first inlet pipe of the pressure building chamber in the pressure building unit, and the first outlet pipe of the pressure building chamber is respectively connected to the two sets of inlet pipes of the wheel brake circuit; the outlet side of the first master cylinder isolation valve and the outlet side of the second master cylinder isolation valve are also respectively connected to the two sets of inlet pipes of the wheel brake circuit. The first filter assembly is disposed in the liquid pipe of the first liquid outlet.

2. The braking system according to claim 1, characterized in that, The liquid pipe of the first liquid outlet includes: a first upstream pipe near the first liquid outlet and a first downstream pipe near the first piston chamber, and the first filter assembly is disposed between the first upstream pipe and the first downstream pipe.

3. The braking system according to claim 1, characterized in that, The braking system further includes a diagnostic component, through which the second fluid outlet is connected to the second piston chamber.

4. The braking system according to claim 3, characterized in that, The braking system further includes: a second filter assembly; the liquid pipe of the second liquid outlet includes: a second upstream pipe near the second liquid outlet and a second downstream pipe near the diagnostic assembly, and the second filter assembly is disposed between the second upstream pipe and the second downstream pipe.

5. The braking system according to claim 3, characterized in that, The braking system further includes a third filter assembly; the third filter assembly is disposed in a fluid line between the diagnostic assembly and the second piston chamber.

6. The braking system according to claim 3, characterized in that, The braking system further includes a fourth filter assembly, and the liquid pipe of the third outlet includes a third upstream pipe near the third outlet and a third downstream pipe near the diagnostic assembly, and the fourth filter assembly is disposed between the third upstream pipe and the third downstream pipe. The pressure relief outlet pipe of the wheel brake circuit is connected to the third upstream pipe in the liquid pipe of the third outlet.

7. The braking system according to claim 3, characterized in that, The diagnostic components include: a diagnostic valve and a diagnostic check valve; or... The diagnostic component is a flow control valve with a one-way throttling function.

8. The braking system according to claim 2, characterized in that, The braking system further includes: a simulated load return fluid path, wherein the simulated load return fluid path is connected to the first upstream pipeline or the first downstream pipeline in the fluid pipe of the first outlet. The second inlet pipe of the pressure-building chamber is connected to the simulated load return liquid path.

9. The braking system according to claim 8, characterized in that, The braking system further includes a fifth filter assembly, and the fluid outlet line of the pedal-feel simulated load is also connected to the atmosphere through the fifth filter assembly; or... The liquid outlet pipe of the pedal-feel simulated load is connected to the liquid return pipe of the simulated load.

10. A car, characterized in that, Includes the braking system as described in any one of claims 1-9.

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