Pipeline exhaust system, thermal management system and vehicle

Abstract

The present disclosure relates to a pipeline exhaust system, a thermal management system, and a vehicle. The pipeline exhaust system includes: a control module, an exhaust device, and a pressure regulating device. The pressure regulating device is connected to the exhaust device through a pipeline; the control module is used to detect whether the pipeline meets the preset exhaust conditions, and when the pipeline meets the preset exhaust conditions, it sends a preset exhaust signal corresponding to the preset exhaust condition to the pressure regulating device; the pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to the preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device. In this way, the pipeline exhaust system can be automatically exhausted by adjusting the pressure in the pipeline, and the pressure regulating device and the exhaust device used to adjust the pressure in the pipeline are both built-in devices of the pipeline exhaust system. In this way, there is no need for external exhaust equipment, avoiding problems such as inconvenient maintenance operations.

Description

Technical Field

[0001] The present disclosure relates to the field of pipeline technology, and in particular, to a pipeline exhaust system, a thermal management system, and a vehicle. Background Art

[0002] At present, most piping systems (for example, thermal management piping systems of power vehicles) cannot achieve effective exhaust, especially when replacing the circulating fluid. Effective exhaust cannot be performed, resulting in the circulating fluid not being able to be filled. Due to the complexity of the piping system, bubbles are prone to appear, especially at the corners and the tops of the curved pipes. The excessive number of these bubbles will seriously affect the performance of the pipes. At present, the following two methods are mainly used to achieve exhaust of the piping system: (1) using an external vacuum filling machine to extract the gas in the piping system, resulting in a low internal air pressure. When filling the circulating fluid, it is easy to fill the pipe with circulating fluid, thus avoiding the exhaust problem; (2) external exhaust tooling, which exhausts the gas by connecting a water tank and a water pump in series. However, both methods have problems such as the inability to achieve automatic exhaust, high cost of external equipment, and inconvenient maintenance operations. Summary of the Invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a pipeline exhaust system, a thermal management system and a vehicle.

[0004] To achieve the above objectives, in a first aspect, the present disclosure provides a pipeline exhaust system, comprising: a control module, an exhaust device, and a pressure regulating device, wherein the pressure regulating device is connected to the exhaust device through a pipeline;

[0005] The control module is used to detect whether the pipeline meets the preset exhaust condition, and when the pipeline meets the preset exhaust condition, send a preset exhaust signal corresponding to the preset exhaust condition to the pressure regulating device;

[0006] The pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to a preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device.

[0007] Optionally, the control module is used to detect whether the pipeline meets a preset exhaust condition, and when the pipeline meets the preset exhaust condition, send a corresponding preset exhaust signal to the pressure regulating device;

[0008] The pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to a preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device;

[0009] Specifically include:

[0010] The control module is used to detect whether the pipeline meets the initial exhaust condition, and send a first preset exhaust signal to the pressure regulating device when the pipeline meets the initial exhaust condition;

[0011] The pressure regulating device is used to receive the first preset exhaust signal and set the pressure regulating device to a first preset state based on the first preset exhaust signal;

[0012] The control module is configured to send a second preset exhaust signal to the pressure regulating device when the pressure regulating device is in the first preset state and detects that the pipeline meets a first preset condition;

[0013] The pressure regulating device is configured to receive the second preset exhaust signal and adjust the pressure regulating device to a second preset state based on the second exhaust signal;

[0014] The control module is configured to send a third exhaust signal to the pressure regulating device when the pressure regulating device reaches the second preset state and detects that the pipeline meets the second preset condition;

[0015] The pressure regulating device is configured to receive the third exhaust signal and adjust the pressure regulating device to a third preset state based on the third exhaust signal;

[0016] The control module is used to determine whether the pipeline meets the initial exhaust condition when the pressure regulating device reaches the third preset state and detects that the pipeline meets the third preset condition.

[0017] If the control module detects that the pipeline meets the initial exhaust condition, the control module sends the first exhaust signal to the pressure regulating device;

[0018] If the control module detects that the pipeline does not meet the initial exhaust condition, sending a fourth exhaust signal to the pressure regulating device;

[0019] The pressure regulating device is used to receive the fourth exhaust signal to put the pressure regulating device into an initial state.

[0020] Optionally, the pressure regulating device includes a water pump and a regulating valve connected via a first pipeline, wherein the regulating valve, the exhaust device and the water pump are sequentially connected via a second pipeline;

[0021] The first preset state is that the regulating valve is closed;

[0022] The second preset state is that the opening of the regulating valve is a first preset opening threshold, wherein the first preset opening threshold is less than or equal to 100%;

[0023] The third preset state is that the opening of the regulating valve is a second preset opening threshold, wherein the second preset opening threshold is greater than 0% and less than the first preset opening threshold;

[0024] The initial state is that the opening of the regulating valve is 100%.

[0025] Optionally, the first preset exhaust condition includes any one of the following:

[0026] The duration of the regulating valve being in the closed state reaches a first preset duration;

[0027] The pressure in the first pipeline reaches a first preset pressure;

[0028] The second preset exhaust condition includes any one of the following:

[0029] The duration of the opening of the regulating valve being in the first preset opening threshold state reaches a second preset duration;

[0030] The pressure in the first pipeline drops to a second preset pressure;

[0031] The third preset exhaust condition includes any one of the following:

[0032] The duration of the opening of the regulating valve being in the second preset opening threshold state reaches a third preset duration;

[0033] The pressure in the second pipeline drops to a third preset pressure;

[0034] Wherein, the second preset pressure and the third preset pressure are both lower than the first preset pressure.

[0035] Optionally, the pressure regulating device includes a water pump, wherein the water outlet of the water pump is connected to the exhaust device through a third pipeline, the water inlet of the water pump is connected to the exhaust device through a fourth pipeline, and the water pump is a pressure-adjustable water pump;

[0036] The first preset state is that the pressure of the water pump is a fourth preset pressure;

[0037] The second preset state is that the pressure of the water pump is a fifth preset pressure;

[0038] The third preset state is that the pressure of the water pump is a sixth preset pressure, wherein the fifth preset pressure, the sixth preset pressure, and the fourth preset pressure increase in sequence;

[0039] The initial state is that the pressure of the water pump is an initial preset pressure, wherein the initial preset pressure is between the sixth preset pressure and the fourth preset pressure.

[0040] Optionally, the first preset exhaust condition includes any one of the following:

[0041] The duration of the water pump pressure being at the fourth preset pressure reaches a fourth preset duration;

[0042] The pressure in the third pipeline increases to a seventh preset pressure;

[0043] The second preset exhaust condition includes any one of the following:

[0044] The duration of the water pump pressure being at the fifth preset pressure reaches a fifth preset duration;

[0045] The pressure in the third pipeline drops to an eighth preset pressure;

[0046] The third preset exhaust condition includes any one of the following:

[0047] The duration of the water pump pressure being at the sixth preset pressure reaches a sixth preset duration;

[0048] The pressure in the fourth pipeline drops to a ninth preset pressure;

[0049] Among them, the seventh preset pressure, the ninth preset pressure, and the eighth preset pressure decrease in sequence.

[0050] Optionally, the exhaust device is a water tank, the water tank comprises an air inlet and an exhaust port, the air inlet is connected to the pipeline, and the exhaust port is connected to the external environment;

[0051] The exhaust system further includes a liquid level sensor, which is arranged in the water tank and is used to detect the liquid level of the water tank in real time;

[0052] The control module is connected to the liquid level sensor and is further used to obtain the liquid level of the water tank in real time through the liquid level sensor;

[0053] The control module is used to detect whether the pipeline meets the initial exhaust condition, including:

[0054] The control module is configured to determine that the pipeline meets an initial exhaust condition when a change in the liquid level of the water tank within a seventh preset time period is greater than a preset liquid level threshold.

[0055] Optionally, the exhaust system further comprises a flow sensor for detecting the flow of the pipeline in real time;

[0056] The control module is further configured to obtain the flow rate of the pipeline through the flow sensor, determine whether the flow rate exceeds a preset flow rate range, and send an abnormal signal to the pressure regulating device when the flow rate exceeds the preset flow rate range;

[0057] The pressure regulating device is further configured to receive the abnormal signal and stop working and / or issue an abnormal alarm.

[0058] In a second aspect, the present disclosure provides a thermal management system, comprising:

[0059] The pipeline exhaust system, cooling device, heating device and cooling load provided in the first aspect of the present disclosure.

[0060] In a third aspect, the present disclosure provides a vehicle comprising the thermal management system provided in the second aspect of the present disclosure.

[0061] In the above technical solution, the pipeline exhaust system includes a control module, an exhaust device, and a pressure regulating device, wherein the pressure regulating device is connected to the exhaust device through a pipeline; the control module is used to detect whether the pipeline meets the preset exhaust conditions, and when the pipeline meets the preset exhaust conditions, it sends a preset exhaust signal corresponding to the preset exhaust condition to the pressure regulating device; the pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to the preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device. In this way, the pipeline exhaust system can be automatically exhausted by adjusting the pressure in the pipeline. In addition, the pressure regulating device and the exhaust device used to adjust the pressure in the pipeline are both built-in devices of the pipeline exhaust system. In this way, there is no need for external exhaust equipment, avoiding problems such as inconvenient maintenance operations.

[0062] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0064] Figure 1 is a block diagram of a pipeline exhaust system according to an exemplary embodiment.

[0065] Figure 2 is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0066] Figure 3A is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0067] Figure 3B is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0068] Figure 3Cis a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0069] Figure 4 is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0070] Figure 5A is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0071] Figure 5B is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0072] Figure 5C is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0073] Figure 6A is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0074] Figure 6B is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0075] Figure 7A is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0076] Figure 7B is a block diagram of a pipeline exhaust system according to another exemplary embodiment.

[0077] Description of Reference Numerals

[0078] 1 Control module 2 Cooling unit

[0079] 3 Pressure regulating device 4 First pressure sensor

[0080] 5 Second pressure sensor 6 Third pressure sensor

[0081] 7 Fourth pressure sensor 8 Liquid level sensor

[0082] 9 Flow sensor 31 Water pump

[0083] 32 Control valve DETAILED DESCRIPTION

[0084] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0085] Figure 1 FIG. 1 is a block diagram of a pipeline exhaust system according to an exemplary embodiment. Figure 1 As shown, the pipeline exhaust system includes a control module 1, an exhaust device 2 and a pressure regulating device 3. The pressure regulating device 3 is connected to the exhaust device 2 through a pipeline, and the pressure regulating device 3 is connected to the control module 1.

[0086] Among them, the control module 1 is used to detect whether the pipeline meets the preset exhaust conditions, and when the pipeline meets the preset exhaust conditions, sends a preset exhaust signal corresponding to the preset exhaust condition to the pressure regulating device 3; the pressure regulating device 3 is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to the preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device 2.

[0087] In the present disclosure, when the pipeline is in a normal circulation state (i.e., not exhausting), the control module 1 detects in real time whether the pipeline meets the preset exhaust conditions. If it is determined that the preset exhaust conditions are met, the control module 1 enters the exhaust process, that is, sends a preset exhaust signal corresponding to the preset exhaust conditions to the pressure regulating device 3, so that the pressure in the pipeline is adjusted by the pressure regulating device 3, so that the gas in the pipeline is discharged through the exhaust device 2. If it is determined that the pipeline does not meet the preset exhaust conditions, the control module 1 continues to detect whether the pipeline meets the preset exhaust conditions.

[0088] In the above technical solution, the pipeline exhaust system includes a control module, an exhaust device, and a pressure regulating device, wherein the pressure regulating device is connected to the exhaust device through a pipeline; the control module is used to detect whether the pipeline meets the preset exhaust conditions, and when the pipeline meets the preset exhaust conditions, it sends a preset exhaust signal corresponding to the preset exhaust condition to the pressure regulating device; the pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to the preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device. In this way, the pipeline exhaust system can be automatically exhausted by adjusting the pressure in the pipeline. In addition, the pressure regulating device and the exhaust device used to adjust the pressure in the pipeline are both built-in devices of the pipeline exhaust system. In this way, there is no need for external exhaust equipment, avoiding problems such as inconvenient maintenance operations.

[0089] Specifically, the pipeline exhaust system can utilize the control module 1, the exhaust device 2 and the pressure regulating device 3 to achieve exhaust in the following manner.

[0090] The control module 1 is used to detect whether the pipeline meets the initial exhaust condition, and when the pipeline meets the initial exhaust condition, sends a first preset exhaust signal to the pressure regulating device 3; the pressure regulating device 3 is used to receive the first preset exhaust signal, and based on the first preset exhaust signal, the pressure regulating device 3 is in a first preset state; the control module 1 is used to send a second preset exhaust signal to the pressure regulating device 3 when the pressure regulating device 3 is in the first preset state and detects that the pipeline meets the first preset condition; the pressure regulating device 3 is used to receive the second preset exhaust signal, and based on the second exhaust signal, the pressure regulating device 3 is in a second preset state; the control module 1 is used to send a third exhaust signal when the pressure regulating device 3 is in the second preset state and detects that the pipeline meets the second preset condition. The exhaust signal is sent to the pressure regulating device 3; the pressure regulating device 3 is used to receive the third exhaust signal and, based on the third exhaust signal, set the pressure regulating device 3 to the third preset state; the control module 1 is used to determine whether the pipeline meets the initial exhaust condition when the pressure regulating device 3 reaches the third preset state and detects that the pipeline meets the third preset condition. If the control module 1 detects that the pipeline meets the initial exhaust condition, it sends the first exhaust signal to the pressure regulating device 3, that is, continues to exhaust; if the control module 1 detects that the pipeline does not meet the initial exhaust condition, it exits the exhaust process, that is, sends the fourth exhaust signal to the pressure regulating device 3; the pressure regulating device 3 is used to receive the fourth exhaust signal, so that the pressure regulating device 3 is in the initial state, that is, the pipeline enters the normal circulation state.

[0091] In the above embodiment, the pressure in the pipeline is adjusted by controlling the state change of the pressure regulating device 2 to discharge the gas in the pipeline.

[0092] In the present disclosure, the pressure regulating device can have various structures. In one embodiment, Figure 2 As shown, the pressure regulating device 3 includes a water pump 31 and a regulating valve 32 connected through a first pipeline, the regulating valve 32, the exhaust device 2 and the water pump 31 are connected in sequence through a second pipeline, and the regulating valve 32 is connected to the control module 1. Figure 2 As shown, the first pipeline is the pipeline between the water outlet of the water pump 31 and the water inlet of the regulating valve 32, that is, the xy section pipeline, and the second pipeline is the pipeline between the water outlet of the regulating valve 32 and the water inlet of the water pump 31, that is, the zw section pipeline.

[0093] The water pump 31 may be a water pump with fixed pressure (i.e., a fixed power water pump) or a water pump with adjustable pressure; the regulating valve 32 may be an electric regulating valve, a pneumatic regulating valve, or a regulating valve of other modes.

[0094] At this time, the first preset state is that the regulating valve 32 is closed; the second preset state is that the opening of the regulating valve 32 is the first preset opening threshold, wherein the first preset opening threshold is less than or equal to 100%; the third preset state is that the opening of the regulating valve 32 is the second preset opening threshold, wherein the second preset opening threshold is greater than 0% and less than the first preset opening threshold; the initial state is that the opening of the regulating valve 32 is 100%. That is, the pipeline exhaust system realizes exhaust through the following steps (1) to (11):

[0095] (1) Control module 1 detects whether the pipeline meets the initial exhaust conditions.

[0096] When the control module 1 detects that the pipeline meets the initial exhaust condition, it executes the following step (2); if it detects that the pipeline does not meet the initial exhaust condition, it continues to detect whether the initial exhaust condition is met, that is, returns to step (1).

[0097] (2) The control module 1 sends a first preset exhaust signal to the regulating valve 32 .

[0098] (3) The regulating valve 32 receives the first preset exhaust signal and closes based on the first preset exhaust signal.

[0099] In the present disclosure, when the pipeline is in a normal circulation state, the opening of the regulating valve is 100%. When it meets the initial exhaust conditions, the regulating valve 32 is closed. Since the water pump 31 is in a working state, the hydraulic pressure of the circulating fluid in the first pipeline increases rapidly, and the hydraulic pressure of the circulating fluid in the second pipeline decreases rapidly, resulting in inconsistent hydraulic pressure of the circulating fluid at both ends of the regulating valve 32.

[0100] (4) The control module 1 detects whether the pipeline meets the first preset condition, and sends a second preset exhaust signal to the regulating valve 32 when it is detected that the pipeline meets the first preset condition.

[0101] In the embodiment of the present disclosure, the first preset condition may include any one of the following a and b:

[0102] a. The duration of the regulating valve being in the closed state reaches a first preset duration.

[0103] Among them, the first preset time length can be determined according to the layout of the first pipeline and the capacity of the water pump, so that when the regulating valve is in the closed state, the pressure in the pipeline of the pipeline exhaust system is always less than the maximum pressure value that the pipeline can withstand.

[0104] b. The pressure in the first pipeline reaches a first preset pressure.

[0105] For example, Figure 3A 、 Figure 3CAs shown, the pipeline exhaust system also includes a first pressure sensor 4 arranged between the water pump 31 and the regulating valve 32 for detecting the pressure in the first pipeline; the control module 1 is connected to the first pressure sensor 4, and is used to obtain the pressure in the first pipeline from the first pressure sensor 4, and after controlling the regulating valve 32 to close, determine in real time whether the pressure in the first pipeline reaches a first preset pressure (for example, 15MPa).

[0106] After the regulating valve 32 is closed, the control module 1 determines whether the first preset condition is met. If the first preset condition is met, the control module 1 sends a second preset exhaust signal to the regulating valve 32; if not, the control module 1 continues to monitor whether the first preset condition is met.

[0107] (5) The regulating valve 32 receives the second preset exhaust signal and adjusts the opening degree of the regulating valve 32 to the first preset opening degree threshold value based on the second exhaust signal.

[0108] In the present disclosure, before the opening of regulating valve 32 is adjusted to a first preset opening threshold, the hydraulic pressure of the circulating fluid at both ends of regulating valve 32 is inconsistent. When the opening is adjusted to the first preset opening threshold, the circulating fluid in the first pipeline rapidly flows into the second pipeline, rapidly increasing the flow rate of the circulating fluid. The high-flow rate of the circulating fluid carries bubbles in the pipeline (especially those at the corners and tops of the curved pipes) to exhaust device 2. Furthermore, to increase the flow rate of the circulating fluid so that bubbles in the pipeline can be expelled to exhaust device 2 as quickly as possible, the first preset opening threshold can be set to 100%.

[0109] (6) The control module 1 detects whether the pipeline meets the second preset condition, and sends a third exhaust signal to the regulating valve 32 when it is detected that the pipeline meets the second preset condition.

[0110] In the embodiment of the present disclosure, the second preset condition may include any one of the following c and d:

[0111] c. The duration of time during which the opening of the regulating valve remains at the first preset opening threshold state reaches a second preset duration.

[0112] The second preset time period can be determined based on the layout of the first pipeline and the capacity of the water pump, so that the pressure in the first pipeline drops to within the pipeline pressure range when the pipeline exhaust system is in a normal circulation state.

[0113] d. The pressure in the first pipeline drops to a second preset pressure.

[0114] In the present disclosure, the opening of the regulating valve 32 is adjusted from closed to a first preset opening threshold, and the pressure in the pipeline of the pipeline exhaust system is reduced. The control module 1 is also used to determine in real time whether the pressure in the first pipeline drops to a second preset pressure after the opening of the regulating valve 32 is adjusted to the first preset opening threshold, wherein the second preset pressure is within the pipeline pressure range when the pipeline exhaust system is in a normal circulation state, and the second preset pressure is less than the first preset pressure.

[0115] After the opening of the regulating valve 32 is adjusted to the first preset opening threshold, the control module 1 determines whether the second preset condition is met. If the second preset condition is met, the third exhaust signal is sent to the regulating valve 32; if not, the second preset condition is continued to be monitored.

[0116] (7) The regulating valve 32 receives the third exhaust signal and adjusts the opening degree of the regulating valve 32 to the second preset opening degree threshold value based on the third exhaust signal.

[0117] In the present disclosure, after the opening of the regulating valve 32 is adjusted to a first preset opening threshold, bubbles are expelled into the exhaust device 2 using a high-flow circulating fluid. Subsequently, to smoothly expel the bubbles from the exhaust device 2, the opening of the regulating valve is adjusted to a second preset opening threshold when a second preset condition is satisfied. At this point, because the second preset opening is less than the first preset opening, the water resistance of the first and second pipelines (i.e., the pipelines of the pipeline exhaust system) increases, causing the circulating fluid flow rate to slow. Thus, when the circulating fluid passes through the exhaust device 2, due to the slow flow rate, bubbles in the circulating fluid easily float to the surface and are then discharged from the exhaust device 2 (e.g., through an exhaust port on the exhaust device 2), achieving automatic exhaust of the pipeline exhaust system.

[0118] (8) The control module 1 detects whether the pipeline meets the third preset condition.

[0119] In the embodiment of the present disclosure, the third preset condition includes any one of the following e and f:

[0120] e. The duration during which the opening of the regulating valve remains at the second preset opening threshold state reaches a third preset duration.

[0121] Among them, the third preset time length can be determined according to the layout of the first pipeline and the capacity of the water pump, so that when the opening of the regulating valve is at the second preset opening threshold state, the pressure in the pipeline is always less than the maximum pressure value that the pipeline can withstand.

[0122] f. The pressure in the second pipeline drops to a third preset pressure.

[0123] Among them, Figure 3B and Figure 3CAs shown, the pipeline exhaust system also includes a second pressure sensor 5 arranged between the regulating valve 32 and the exhaust device 2 for detecting the pressure in the second pipeline; the control module 1 is connected to the second pressure sensor 5, and is used to obtain the pressure in the second pipeline from the second pressure sensor 5, and after the opening of the regulating valve 32 is adjusted to the second preset opening threshold, determine in real time whether the pressure in the second pipeline drops to a third preset pressure, wherein the third preset pressure is less than the first preset pressure, for example, the third preset pressure is slightly greater than half of the first preset pressure.

[0124] After the opening of the regulating valve 32 is adjusted to the second preset opening threshold, the control module 1 determines whether the third preset condition is satisfied. If the third preset condition is satisfied, it is necessary to determine whether the exhaust is complete, that is, to execute the following step (9); if the third preset condition is not satisfied, the control module 1 continues to monitor whether the third preset condition is satisfied.

[0125] (9) The control module 1 determines whether the pipeline meets the initial exhaust conditions.

[0126] In the present disclosure, if the pipeline meets the initial exhaust condition, it indicates that the exhaust system of the pipeline has not been exhausted. The control module 1 sends a first preset exhaust signal to the regulating valve 32, and returns to the above step (2) to continue exhausting until the pipeline does not meet the initial exhaust condition. If the pipeline does not meet the initial exhaust condition, it indicates that the exhaust system of the pipeline has been exhausted. At this time, the exhaust can be terminated and the normal circulation state can be restored, that is, the following steps (10) and (11) are executed.

[0127] (10) Send the fourth exhaust signal to the regulating valve 32.

[0128] (11) The regulating valve 32 receives the fourth exhaust signal and adjusts the opening to 100%, that is, the pipeline enters the normal circulation state.

[0129] In the above embodiment, automatic exhaust is achieved by continuously switching the opening of the regulating valve. Furthermore, the regulating valve is inexpensive, reducing system costs. Furthermore, since the entire exhaust process does not require the water pump to provide excessive pressure, the power requirement for the water pump can be reduced. Thus, a low-power water pump can meet the requirements of the pipeline exhaust system, further reducing system costs.

[0130] In another embodiment, Figure 4 As shown, the pressure regulating device 3 includes a water pump 31, wherein the water outlet of the water pump 31 is connected to the exhaust device 2 through a third pipe, and the water inlet of the water pump 31 is connected to the exhaust device 2 through a fourth pipe. The water pump 31 is a pressure-adjustable water pump and is connected to the control module 31. Figure 4As shown in , the third pipeline is the pipeline between the water outlet of the water pump 31 and the exhaust device 2, and the fourth pipeline is the pipeline between the exhaust device 2 and the water pump 31.

[0131] At this time, the first preset state is that the pressure of the water pump 31 is the fourth preset pressure; the second preset state is that the pressure of the water pump 31 is the fifth preset pressure; the third preset state is that the pressure of the water pump 31 is the sixth preset pressure, wherein the fifth preset pressure, the sixth preset pressure, and the fourth preset pressure increase in sequence; the initial state is that the pressure of the water pump 31 is the initial preset pressure, wherein the initial preset pressure is between the sixth preset pressure and the fourth preset pressure. That is, the pipeline exhaust system realizes exhaust through the following steps [1] to

[11] :

[0132] [1] Control module 1 detects whether the pipeline meets the initial exhaust conditions.

[0133] When the control module 1 detects that the pipeline meets the initial exhaust condition, it executes the following steps [2]; if it detects that the pipeline does not meet the initial exhaust condition, it continues to detect whether the initial exhaust condition is met, that is, returns to step [1].

[0134] [2] The control module 1 sends a first preset exhaust signal to the water pump 31.

[0135] [3] The water pump 31 receives the first preset exhaust signal and adjusts the pressure to a fourth preset pressure based on the first preset exhaust signal.

[0136] In the present disclosure, when the pipeline is in a normal circulation state, the pressure of water pump 31 is set to an initial preset pressure, where the initial preset pressure is less than the fourth preset pressure. When the pipeline meets the initial exhaust conditions, the pressure of water pump 31 is adjusted to the fourth preset pressure, increasing the flow rate of the circulating fluid in the pipeline. The high-flow circulating fluid carries bubbles in the pipeline (particularly those at the corners and tops of curved pipes) away to exhaust device 2. By way of example, the fourth preset pressure is the maximum pressure the pipeline can withstand.

[0137] [4] The control module 1 detects whether the pipeline meets the first preset condition, and sends a second preset exhaust signal to the water pump 31 when it is detected that the pipeline meets the first preset condition.

[0138] In the embodiment of the present disclosure, the first preset condition includes any one of the following g and h:

[0139] g. The duration during which the water pump pressure remains at the fourth preset pressure reaches the fourth preset duration.

[0140] Among them, the fourth preset time length can be determined according to the pipeline layout and the capacity of the water pump, so that during the period when the water pump pressure is adjusted to the fourth preset pressure, the pressure in the pipeline is always less than the maximum pressure value that the pipeline can withstand.

[0141] h. The pressure in the third pipeline increases to the seventh preset pressure.

[0142] For example, Figure 5A and Figure 5C As shown in , the pipeline exhaust system also includes a third pressure sensor 6 arranged between the water outlet of the water pump 31 and the exhaust device 2 for detecting the pressure in the third pipeline; the control module 1 is connected to the third pressure sensor 6, for obtaining the pressure in the third pipeline from the third pressure sensor 6, and after the pressure of the water pump 31 is adjusted to the fourth preset pressure, determining in real time whether the pressure in the third pipeline increases to the seventh preset pressure.

[0143] After the pressure of the water pump 31 is adjusted to the fourth preset pressure, the control module 1 determines whether the above-mentioned fourth preset condition is met; if the fourth preset condition is met, the second preset exhaust signal is sent to the water pump 31; if the fourth preset condition is not met, the control module 1 continues to monitor whether the fourth preset condition is met.

[0144] [5] The water pump 31 receives the second preset exhaust signal and adjusts the pressure to the fifth preset pressure based on the second exhaust signal.

[0145] In the present disclosure, after the pressure of water pump 31 is adjusted to a fourth preset pressure, high-flow circulating fluid is used to expel bubbles into exhaust device 2. Thereafter, when the fourth preset condition is met, the pressure of water pump 32 is adjusted to a fifth preset pressure. This allows the pipeline pressure to continuously vary, resulting in a change in the circulating fluid flow rate, so that as many bubbles as possible in the pipeline system are expelled into exhaust device 2. For example, the fifth preset pressure is zero.

[0146] [6] The control module 1 detects whether the pipeline meets the second preset condition, and sends a third exhaust signal to the water pump 31 when it is detected that the pipeline meets the second preset condition.

[0147] In the embodiment of the present disclosure, the second preset condition includes any one of the following i and j:

[0148] i. The duration during which the water pump pressure remains at the fifth preset pressure reaches the fifth preset duration.

[0149] The fifth preset time period may be determined according to the pipeline layout and the capacity of the water pump.

[0150] j. The pressure in the third pipeline drops to the eighth preset pressure.

[0151] In the present disclosure, after the water pump pressure is adjusted to the fifth preset pressure, the pipeline pressure decreases. After the water pump pressure is adjusted to the fifth preset pressure, it can be determined in real time whether the pressure in the third pipeline has dropped to an eighth preset pressure, where the eighth preset pressure is less than the seventh preset pressure, for example, the eighth preset pressure is 0.3 MPa.

[0152] After the pressure of the water pump 31 is adjusted to the fifth preset pressure, the control module 1 determines whether the second preset condition is met. If the second preset condition is met, the third exhaust signal is sent to the water pump 31; if not, the second preset condition is continued to be monitored.

[0153] [7] The water pump 31 receives the third exhaust signal and adjusts the pressure to a sixth preset pressure based on the third exhaust signal.

[0154] The sixth preset pressure is smaller than the initial preset pressure and larger than the fifth preset pressure.

[0155] To smoothly expel bubbles from exhaust device 2, the pressure is adjusted to a sixth preset pressure when the second preset condition is met. The circulating fluid is circulated at a low speed. As the circulating fluid passes through the water tank, the slow flow rate allows bubbles in the circulating fluid to easily float to the surface and be expelled through exhaust device 2 (e.g., through the exhaust port on exhaust device 2), achieving automatic exhaust of the pipeline exhaust system.

[0156] [8] The control module 1 detects whether the pipeline meets the third preset condition.

[0157] In the embodiment of the present disclosure, the third preset condition includes any one of the following k and q:

[0158] k. The duration during which the water pump pressure remains at the sixth preset pressure reaches the sixth preset duration.

[0159] The sixth preset time period may be determined according to the pipeline layout and the capacity of the water pump.

[0160] q. The pressure in the fourth pipeline drops to the ninth preset pressure.

[0161] In this disclosure, Figure 5B and Figure 5CAs shown, the pipeline exhaust system also includes a fourth pressure sensor 7 disposed between the exhaust device 2 and the water inlet of the water pump 31 for detecting the pressure within the fourth pipeline. The control module 1 is connected to the fourth pressure sensor 7 and is configured to obtain the pressure within the fourth pipeline from the fourth pressure sensor 7. After the pressure of the water pump 31 is adjusted to the sixth preset pressure, the control module 1 is configured to determine in real time whether the pressure within the fourth pipeline has dropped to a ninth preset pressure. The ninth preset pressure is greater than the eighth preset pressure and less than the seventh preset pressure, for example, the ninth preset pressure is 1.5 MPa. When the pressure of the water pump 31 is adjusted from the fifth preset pressure to the sixth preset pressure, the pressure in the fourth pipeline decreases.

[0162] After the pressure of the water pump 31 is adjusted to the sixth preset pressure, it is determined whether the third preset condition is met. If the third preset condition is met, it is necessary to determine whether the exhaust is complete, that is, perform the following steps [9]; if the third preset condition is not met, continue to monitor whether the third preset condition is met.

[0163] [9] The control module 1 determines whether the pipeline meets the initial exhaust conditions.

[0164] In the present disclosure, if the pipeline meets the initial exhaust condition, it indicates that the exhaust system of the pipeline has not completed exhaust. The control module 1 sends a first preset exhaust signal to the water pump 31 and returns to the above step [2] to continue exhausting until the pipeline does not meet the initial exhaust condition. If the pipeline does not meet the initial exhaust condition, it indicates that the exhaust system of the pipeline has completed exhaust. At this time, the exhaust can be terminated and the normal circulation state can be restored, that is, the following steps

[10] and

[11] are executed.

[0165]

[10] Send a fourth exhaust signal to the water pump 31.

[0166]

[11] The water pump 31 receives the fourth exhaust signal and adjusts the pressure to the initial preset pressure, that is, the pipeline enters the normal circulation state.

[0167] In the above embodiment, automatic exhaust is achieved by continuously adjusting the pressure of the adjustable-pressure water pump, eliminating the need for a regulating valve. This avoids the problem of being unable to install a regulating valve due to limited space. Furthermore, the cost of the adjustable-pressure water pump is lower than that of a vacuum filling machine or an external exhaust device, allowing automatic exhaust of the pipeline exhaust system while controlling system costs.

[0168] The following describes in detail the specific implementation of the control module 1 to determine whether the pipeline meets the initial exhaust conditions. Figure 6A 、 Figure 6BAs shown, the exhaust device 2 is a water tank, which includes an air inlet m and an exhaust port n. The air inlet m is connected to the pipeline, and the exhaust port n is connected to the external environment. The above-mentioned pipeline exhaust system also includes a liquid level sensor 8, which is arranged in the water tank for real-time detection of the liquid level of the water tank.

[0169] The control module 1 is connected to the liquid level sensor 8 and is also used to obtain the liquid level of the water tank in real time through the liquid level sensor 8; the control module 1 is used to determine that the pipeline meets the initial exhaust condition when the change in the liquid level of the water tank within the seventh preset time period is greater than the preset liquid level threshold.

[0170] In the present disclosure, when there is a large amount of gas in the pipeline, the water pump 31 in working state will increase the pipeline pressure, resulting in compression of the gas in the pipeline, causing the water tank to replenish the circulating fluid to the pipeline, resulting in changes in the water tank liquid level. Therefore, by monitoring the changes in the water tank liquid level, it is determined whether there is a large amount of gas in the pipeline, and when it is determined that there is a large amount of gas, it is determined that the pipeline meets the initial exhaust conditions. Specifically, the control module 1 can determine whether the pipeline meets the initial exhaust conditions by judging whether the change in the liquid level of the water tank within the seventh preset time length (for example, 0.5s) is greater than the preset liquid level threshold. Among them, if the change in the liquid level of the water tank within the seventh preset time length is greater than the preset liquid level threshold, it is determined that the pipeline meets the initial exhaust conditions; if the change in the liquid level of the water tank within the seventh preset time length is less than or equal to the preset liquid level threshold, it is determined that the pipeline exhaust system does not meet the initial exhaust conditions.

[0171] In addition, in order to avoid damage to the pipeline exhaust system caused by the water pump 31 idling or blocking (i.e., the water pump is powered but not running), the water pump is monitored in real time to see if it is abnormal when the pipeline is in a normal circulation state and during the exhaust process. When the water pump is abnormal, the water pump is controlled to stop working and / or an abnormal alarm is issued.

[0172] Specifically, if Figure 7A 、 7B As shown in , the above-mentioned pipeline exhaust system also includes a flow sensor 9 for detecting the flow of the pipeline in real time; the control module 1 is also used to obtain the flow of the pipeline through the flow sensor 9, and to determine whether the flow exceeds the preset flow range, and when the flow exceeds the preset flow range, send an abnormal signal to the pressure regulating device 3; the pressure regulating device 3 is also used to receive the abnormal signal, and stop working and / or issue an abnormal alarm.

[0173] In the present disclosure, if the flow rate of the pipeline exceeds the preset flow rate range, it indicates that the water pump has abnormalities such as idling or blocking. At this time, in order to avoid damage to the pipeline exhaust system, the pressure regulating device 3 stops working and / or issues an abnormal alarm; if the flow rate of the pipeline is within the preset flow rate range, it indicates that there is no abnormality in the water pump. At this time, you can continue to monitor whether the water pump is abnormal.

[0174] The present disclosure also provides a thermal management system, comprising: the aforementioned pipeline exhaust system, a cooling device, a heating device, and a cooling load.

[0175] In the present disclosure, the cooling device may be, for example, a heat sink, a fan, etc.; the heating device may be, for example, a PTC heater; taking the above-mentioned pipeline exhaust system as an example of a vehicle's thermal management system, the cooling load may include power batteries, drive motors and other equipment that need to be cooled.

[0176] The present disclosure also provides a vehicle including the above thermal management system.

[0177] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0178] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0179] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A pipeline exhaust system, characterized in that: The pipeline exhaust system is applied to a vehicle, and comprises: a control module, an exhaust device, and a pressure regulating device, wherein the pressure regulating device is connected to the exhaust device through a pipeline; The control module is used to detect whether the pipeline meets the initial exhaust condition, and when the pipeline meets the initial exhaust condition, send a preset exhaust signal corresponding to the initial exhaust condition to the pressure regulating device; The pressure regulating device is used to respond to the preset exhaust signal and adjust the pressure in the pipeline according to a preset rule corresponding to the preset exhaust signal, so that the gas in the pipeline is discharged through the exhaust device; In which, the exhaust device is a water tank, and the exhaust system also includes a liquid level sensor, which is arranged in the water tank and is used to detect the liquid level of the water tank in real time. The control module is connected to the liquid level sensor and is also used to obtain the liquid level of the water tank in real time through the liquid level sensor. The control module is used to determine that the pipeline meets the initial exhaust condition when the change in the liquid level of the water tank within the seventh preset time period is greater than the preset liquid level threshold.

2. The exhaust system according to claim 1, characterized in that The control module is used to detect whether the pipeline meets the initial exhaust condition, and send a first preset exhaust signal to the pressure regulating device when the pipeline meets the initial exhaust condition; The pressure regulating device is used to receive the first preset exhaust signal and set the pressure regulating device to a first preset state based on the first preset exhaust signal; The control module is configured to send a second preset exhaust signal to the pressure regulating device when the pressure regulating device is in the first preset state and detects that the pipeline meets a first preset condition; The pressure regulating device is configured to receive the second preset exhaust signal and adjust the pressure regulating device to a second preset state based on the second preset exhaust signal; The control module is configured to send a third exhaust signal to the pressure regulating device when the pressure regulating device reaches the second preset state and detects that the pipeline meets the second preset condition; The pressure regulating device is configured to receive the third exhaust signal and adjust the pressure regulating device to a third preset state based on the third exhaust signal; The control module is used to determine whether the pipeline meets the initial exhaust condition when the pressure regulating device reaches the third preset state and detects that the pipeline meets the third preset condition. If the control module detects that the pipeline meets the initial exhaust condition, the control module sends the first preset exhaust signal to the pressure regulating device; If the control module detects that the pipeline does not meet the initial exhaust condition, sending a fourth exhaust signal to the pressure regulating device; The pressure regulating device is used to receive the fourth exhaust signal to put the pressure regulating device into an initial state; Wherein, when the pressure regulating device includes a water pump and a regulating valve connected by a first pipeline, the regulating valve, the exhaust device and the water pump are connected in sequence through a second pipeline; the first preset state is that the regulating valve is closed; the second preset state is that the opening of the regulating valve is a first preset opening threshold, wherein the first preset opening threshold is less than or equal to 100%; the third preset state is that the opening of the regulating valve is a second preset opening threshold, wherein the second preset opening threshold is greater than 0% and less than the first preset opening threshold; the initial state is that the opening of the regulating valve is 100%; the first preset condition includes the following Any one of the following: the duration of time the regulating valve is in the closed state reaches a first preset duration, and the pressure in the first pipeline reaches a first preset pressure; the second preset condition includes any one of the following: the duration of time the opening of the regulating valve is at the first preset opening threshold reaches a second preset duration, and the pressure in the first pipeline drops to a second preset pressure; the third preset condition includes any one of the following: the duration of time the opening of the regulating valve is at the second preset opening threshold reaches a third preset duration, and the pressure in the second pipeline drops to a third preset pressure; wherein, the second preset pressure and the third preset pressure are both lower than the first preset pressure; Wherein, when the pressure regulating device includes a water pump, the water outlet of the water pump is connected to the exhaust device through a third pipe, and the water inlet of the water pump is connected to the exhaust device through a fourth pipe, and the water pump is a pressure-adjustable water pump; the first preset state is that the pressure of the water pump is a fourth preset pressure; the second preset state is that the pressure of the water pump is a fifth preset pressure; the third preset state is that the pressure of the water pump is a sixth preset pressure, wherein the fifth preset pressure, the sixth preset pressure, and the fourth preset pressure increase in sequence; The initial state is that the pressure of the water pump is an initial preset pressure, wherein the initial preset pressure is between the sixth preset pressure and the fourth preset pressure; the first preset condition includes any one of the following: the duration for which the pressure of the water pump is at the fourth preset pressure reaches the fourth preset duration, and the pressure in the third pipeline increases to the seventh preset pressure; the second preset condition includes any one of the following: the duration for which the pressure of the water pump is at the fifth preset pressure reaches the fifth preset duration, and the pressure in the third pipeline drops to the eighth preset pressure; the third preset condition includes any one of the following: the duration for which the pressure of the water pump is at the sixth preset pressure reaches the sixth preset duration, and the pressure in the fourth pipeline drops to the ninth preset pressure; wherein the seventh preset pressure, the ninth preset pressure, and the eighth preset pressure decrease in sequence.

3. The exhaust system according to claim 2, characterized in that The water tank includes an air inlet and an air outlet, wherein the air inlet is connected to the pipeline, and the air outlet is connected to the external environment.

4. The exhaust system according to claim 1 or 2, characterized in that: The exhaust system further includes a flow sensor for detecting the flow of the pipeline in real time; The control module is further configured to obtain the flow rate of the pipeline through the flow sensor, determine whether the flow rate exceeds a preset flow rate range, and send an abnormal signal to the pressure regulating device when the flow rate exceeds the preset flow rate range; The pressure regulating device is further configured to receive the abnormal signal and stop working and / or issue an abnormal alarm.

5. A thermal management system, characterized in that: include: The pipeline exhaust system, cooling device, heating device and cooling load according to any one of claims 1 to 4.

6. A vehicle, characterized in that: Comprising the thermal management system of claim 5.

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