Cooling system and vehicle

Abstract

The utility model provides a cooling system and a vehicle, and belongs to the technical field of vehicle cooling structures.The cooling system comprises a filtering line and an emergency line which are connected in parallel, the filtering line comprises a cooling pipe, an expansion water tank and a backflow pipe which are connected end to end, and the emergency line comprises a cooling pipe, an emergency pipe and a backflow pipe which are connected end to end; the expansion water tank comprises a tank body, a filter and a control module, a liquid inlet and a liquid outlet are formed in the tank body, the cooling pipe is inserted into the liquid inlet, and the backflow pipe is inserted into the liquid outlet; the filter is arranged in the box body and corresponds to the liquid inlet; the control module comprises a pressure detector arranged in the filter and a controller in communication connection with the pressure detector. The cooling system and the vehicle provided by the utility model aim at solving the problems that after a filter in an expansion water tank is blocked, the filter cannot be found and processed in time, so that the cooling system breaks down, and the cooling system cannot operate normally when the filter is maintained.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle cooling structure, and more particularly to a cooling system and a vehicle. BACKGROUND

[0002] In the cooling system of a vehicle, the expansion tank is an important component, which mainly functions to regulate the volume change of the cooling liquid in the system and maintain the stability of the system pressure. In the prior art, to prevent the blockage of pipelines or components in the cooling system caused by impurities in the cooling liquid, a filter is usually arranged in the expansion tank to filter the cooling water and intercept impurities such as suspended solids and corrosion products in the water, thereby ensuring the normal operation of the cooling system.

[0003] However, the prior art has obvious defects: when the filter is used for a long time, impurities will gradually accumulate and cause the filter to be blocked, and if not cleaned in time, it will cause the fluid resistance in the expansion tank to increase, thereby causing the system pressure to abnormally rise, which may lead to faults such as rupture of the cooling system pipeline and failure of the sealing element, seriously affecting the safety and reliability of the system operation. In addition, when the blocked filter needs to be cleaned or replaced, the traditional structure often needs to shut down the entire cooling system, causing the cooling function to be temporarily disabled, which not only affects the continuous operation of related equipment, but also may cause problems such as production efficiency decline or equipment operation interruption due to shutdown maintenance. Therefore, there is an urgent need for an improved solution that can effectively solve the problems of filter blockage early warning and system continuous operation during maintenance. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a cooling system and a vehicle, and aims to solve the problem that the filter in the expansion tank cannot be found and handled in time after being blocked, leading to cooling system failure, and the cooling system cannot operate normally during filter maintenance.

[0005] In a first aspect, an embodiment of the application provides a cooling system, comprising a filter circuit and an emergency circuit connected in parallel with each other, the filter circuit comprising a cooling pipe, an expansion tank and a return pipe connected in series, the emergency circuit comprising the cooling pipe, an emergency pipe and the return pipe connected in series, and the expansion tank comprising:

[0006] a tank body having a liquid inlet and a liquid outlet, the cooling pipe being inserted into the liquid inlet, and the return pipe being inserted into the liquid outlet;

[0007] a filter arranged in the tank body and corresponding to the liquid inlet, and the liquid outlet end of the cooling pipe being located in the filter; and

[0008] a control module comprising a pressure detector arranged in the filter and a controller in communication connection with the pressure detector;

[0009] When the pressure in the filter is not higher than P, the controller controls the filter circuit to be on and the emergency circuit to be off; when the pressure in the filter is higher than P, the controller controls the emergency circuit to be on and the filter circuit to be off.

[0010] With reference to the first aspect, in a possible implementation manner, the emergency circuit further comprises a backup water tank connected to the emergency pipe, and the backup water tank is configured to adjust the pressure of the emergency circuit when the emergency circuit is on.

[0011] With reference to the first aspect, in a possible implementation manner, the tank body is further provided with a gas overflow port, the filter circuit further comprises a pressure sensor arranged in the tank body and an exhaust valve arranged at the gas overflow port, and the pressure sensor and the exhaust valve are respectively connected to the controller in communication.

[0012] With reference to the first aspect, in a possible implementation manner, the expansion water tank further comprises a mounting buckle arranged outside the tank body, and the mounting buckle is configured to be detachably connected to a mounting frame.

[0013] With reference to the first aspect, in a possible implementation manner, the tank body is provided with a relief hole for the filter to enter or exit, the expansion water tank further comprises a fixing member arranged outside the tank body and a sealing cover covering the relief hole, the fixing member has a receiving space for accommodating the sealing cover, the sealing cover is provided with a clearance hole corresponding to the liquid inlet, and the sealing cover is detachably connected to the fixing member.

[0014] With reference to the first aspect, in a possible implementation manner, the fixing member comprises a fixing body connected to the tank body and a clamping portion connected to the fixing body, the fixing body is a cylindrical member, a central hole of the fixing body forms the receiving space, and the clamping portion is arranged on an inner circumferential surface of the fixing body and is configured to be detachably connected to the sealing cover.

[0015] With reference to the first aspect, in a possible implementation manner, the fixing body is provided with a plurality of deformation grooves spaced apart along a circumferential direction of the fixing body, the deformation grooves extend along an axial direction of the fixing body and are connected to one end of the fixing body.

[0016] With reference to the first aspect, in a possible implementation manner, the filter comprises a fixed support arranged in the tank body and a filter core arranged on the fixed support, and the cooling liquid flows in the tank body through the fixed support after passing through the filter core.

[0017] With reference to the first aspect, in a possible implementation manner, the filter circuit further comprises a liquid level sensor arranged in the tank body, and the liquid level sensor is connected to the controller in communication.

[0018] The cooling system and the vehicle provided by the application have the beneficial effects that, compared with the prior art, when the internal pressure of the filter is not higher than the preset value P, the filter can intercept and filter impurities such as suspended solids and corrosion products in the cooling liquid when the filter circuit is normally working, so as to avoid the blockage of the cooling system pipeline and components and ensure the long-term stable operation of the system; when the internal pressure of the filter is higher than the preset value P due to the accumulation of impurities, the pressure detector can sense the pressure change in real time and automatically switch to the emergency circuit through the controller, so that the cooling liquid directly returns through the emergency pipe, which can not only prevent the risk of pipeline rupture and sealing failure caused by the abnormal increase of the internal pressure of the expansion tank, but also ensure the continuous operation of the cooling system in the filter blockage state and avoid the interruption of equipment operation caused by maintenance shutdown. At the same time, the real-time monitoring and intelligent response of the filter blockage state are realized through the setting of the control module, the emergency mechanism can be automatically triggered without frequent manual inspection, and the safety and reliability of the cooling system are significantly improved. The parallel design of the filter circuit and the emergency circuit provides independent maintenance space for the cleaning or replacement of the filter, and the cooling system can work normally through the emergency circuit during the maintenance process, which effectively overcomes the defect that the system must be shut down during maintenance in the traditional structure, greatly improves the working continuity and practicability of the system. The application effectively solves the problems of system failure and maintenance shutdown caused by filter blockage in the prior art by setting the parallel filter circuit and emergency circuit and configuring the pressure detection and control module in the expansion tank.

[0019] In a second aspect, the application also provides a vehicle comprising the cooling system described above.

[0020] The vehicle provided by the application has the beneficial effects that, compared with the prior art, the cooling system described above is adopted, and the cooling system has similar technical effects, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The schematic diagram of the cooling system provided by the first embodiment of the application;

[0023] Figure 2 The schematic diagram of the cooling system provided by the second embodiment of the application;

[0024] Figure 3 The structural schematic diagram of the expansion tank used by the application;

[0025] Figure 4 Fig. 2 is a sectional view of the expansion water tank shown in Fig. 1 ; Figure 3 Fig. 2 is a sectional view of the expansion water tank shown in Fig. 1 ;

[0026] Figure 5 Fig. 2 is a sectional view of the expansion water tank shown in Fig. 1 ;

[0027] In the figure: 1, cooling pipe; 2, expansion water tank; 201, tank body; 202, exhaust valve; 203, fixing member; 2031, fixing body; 2032, clamping part; 2033, deformation groove; 204, sealing cover; 205, filter; 2051, fixing support; 2052, filter element; 206, mounting buckle; 3, return pipe; 4, emergency pipe; 5, standby water tank. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0029] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several" is two or more, unless otherwise specifically limited.

[0031] It should be noted that the "front", "back", "inner", "outer", "upper", "lower" and the like in the present embodiment indicate the orientation or positional relationship based on the orientation of the vehicle itself, wherein the head of the vehicle represents "front", the tail of the vehicle represents "back", the top of the vehicle represents "upper", the bottom of the vehicle represents "lower", the "inner" side refers to the side towards the cab, and the "outer" side refers to the side towards the outside of the cab.

[0032] In addition, the front-rear direction of the vehicle body defined in the embodiments of the present application refers to the front-rear direction of the vehicle during driving, the left-right direction of the vehicle body refers to the left-right direction of the vehicle during driving, and the up-down direction of the vehicle body refers to the up-down direction of the vehicle during driving.

[0033] Please refer to Figures 1 to 5 The cooling system and the vehicle provided by the present application will be described below. The cooling system and the vehicle comprise a filtering circuit and an emergency circuit connected in parallel with each other. The filtering circuit comprises a cooling pipe 1, an expansion tank 2 and a return pipe 3 connected in series. The emergency circuit comprises a cooling pipe 1, an emergency pipe 4 and a return pipe 3 connected in series. The expansion tank 2 comprises a tank body 201, a filter 205 and a control module. The tank body 201 is provided with an inlet and an outlet. The cooling pipe 1 is inserted into the inlet, and the return pipe 3 is inserted into the outlet. The filter 205 is arranged in the tank body 201 and corresponds to the inlet. The outlet end of the cooling pipe 1 is located in the filter 205. The control module comprises a pressure detector arranged in the filter 205 and a controller in communication connection with the pressure detector. When the pressure in the filter 205 is not higher than P, the controller controls the filtering circuit to be turned on and the emergency circuit to be turned off. When the pressure in the filter 205 is higher than P, the controller controls the emergency circuit to be turned on and the filtering circuit to be turned off.

[0034] Compared with the prior art, when the internal pressure of the filter 205 is not higher than the preset value P and the filtering circuit is working normally, the filter 205 can intercept and filter impurities such as suspended matters and corrosion products in the cooling liquid, so as to avoid the blockage of the pipeline and components of the cooling system and ensure the long-term stable operation of the system. When the internal pressure of the filter 205 is higher than the preset value P due to the accumulation of impurities, the pressure detector can sense the pressure change in real time and automatically switch to the emergency circuit through the controller, so that the cooling liquid can directly return through the emergency pipe 4. This can not only prevent the risks such as pipeline rupture and sealing failure caused by the abnormal increase of the pressure in the expansion tank 2, but also ensure the continuous operation of the cooling system in the clogging state of the filter 205, so as to avoid the interruption of equipment operation caused by shutdown maintenance. At the same time, the real-time monitoring and intelligent response to the clogging state of the filter 205 are realized through the setting of the control module. The emergency mechanism can be automatically triggered without frequent manual inspection, which significantly improves the safety and reliability of the cooling system. The parallel design of the filtering circuit and the emergency circuit provides independent maintenance space for the cleaning or replacement of the filter 205. During the maintenance process, the cooling system can work normally through the emergency circuit, which effectively overcomes the defect that the system must be shut down for maintenance in the traditional structure, greatly improves the working continuity and practicality of the system. The present application solves the problems of system failure and maintenance shutdown caused by the clogging of the filter 205 in the prior art by arranging the filtering circuit and the emergency circuit in parallel and configuring the pressure detection and control module in the expansion tank 2.

[0035] Specifically, the expansion tank 2 and the emergency pipe 4 are connected in parallel, and a switching valve is arranged at the connection of the expansion tank 2, the emergency pipe 4 and the cooling pipe 1, and the switching valve is in communication connection with the controller. The controller realizes switching between the emergency line and the filtering line by regulating the switching valve.

[0036] It should be noted that the pressure value "P" can be set according to actual needs, and is not specifically limited here.

[0037] Please refer to Figure 2 In some embodiments, the emergency line further comprises a standby water tank 5 connected to the emergency pipe 4, which is used to regulate the pressure of the emergency line when the emergency line is turned on.

[0038] When the filter 205 is blocked and the pressure exceeds the threshold value P, the system switches to the emergency line operation, the standby water tank 5 can buffer the pressure fluctuation of the cooling liquid in the emergency line in real time, compensate the pressure change of the emergency line through its own volume, and avoid the impact on the cooling system caused by the sudden rise or drop of the pressure when the emergency pipe 4 flows alone. At the same time, the standby water tank 5 and the expansion tank 2 form a double-tank pressure regulation mechanism, which continuously maintains the pressure stability of the cooling system during the emergency operation, ensures the uniform and stable flow state of the cooling liquid in the emergency line, guarantees the normal heat dissipation demand of the equipment during the maintenance of the filter 205, provides longer buffer time for cleaning or replacing the filter 205, avoids the secondary failure caused by pressure imbalance in the emergency state, and enables the entire cooling system to still realize safe and reliable continuous operation under abnormal working conditions.

[0039] Please refer to Figure 3 In some embodiments, the tank 201 is also provided with a gas overflow port, and the filtering line further comprises a pressure sensor arranged in the tank 201 and an exhaust valve 202 arranged at the gas overflow port, and the pressure sensor and the exhaust valve 202 are respectively in communication connection with the controller.

[0040] The pressure sensor collects the pressure data in the box 201 in real time and feeds back to the controller, which can accurately monitor the abnormal pressure fluctuation in the box 201 caused by factors such as filter 205 blockage, cooling liquid thermal expansion and contraction, etc. Compared with single internal pressure detection of the filter 205, dynamic monitoring of the overall pressure state of the system is realized. When the pressure sensor detects that the pressure in the box 201 exceeds the safety threshold, the controller synchronously triggers the exhaust valve 202 to automatically open, and the excessive gas pressure is released in time through the overflow port, forming a double-redundancy protection for the pressure of the expansion tank 2, effectively avoiding the sudden increase of pressure caused by filter 205 blockage or system temperature rise, which may cause pipeline burst, sealing failure and other serious faults. In addition, the intelligent linkage of the pressure sensor and the exhaust valve 202 does not require manual intervention, and can quickly respond and perform pressure regulation actions under abnormal working conditions, not only reducing the cost of manual inspection, but also ensuring that the cooling system always operates in a safe pressure range through real-time closed-loop control, forming a multi-level protection mechanism with emergency lines, backup water tanks and other structures, and improving the stability and reliability of the system under complex working conditions.

[0041] Referring to Figure 4 In some embodiments, the expansion tank 2 further comprises a mounting buckle 206 arranged outside the box 201, which is used for clamping connection with the mounting bracket.

[0042] The mounting bracket is used to fix the box 201 in the vehicle, and the mounting buckle 206 is clamped with the mounting bracket. The complex way of relying on bolt fastening or welding fixation of the traditional expansion tank 2 is abandoned, and the positioning and fixation of the expansion tank 2 can be realized through quick clamping, which greatly simplifies the assembly process and effectively improves the assembly efficiency of the whole vehicle production. At the same time, the clamping connection structure has good anti-vibration and anti-impact performance, which avoids the displacement of the box 201 or the fatigue cracking problem of the pipeline interface caused by the loosening of the traditional rigid connection, and ensures the stability of the expansion tank 2 in long-term operation. In addition, the detachable design provides convenience for later maintenance. When it is necessary to overhaul or replace the internal components of the expansion tank 2, the tank can be quickly disassembled without the help of special tools, which significantly reduces the maintenance difficulty and time cost.

[0043] Referring to Figures 3 to 4 In some embodiments, the box 201 is provided with a relief hole for the filter 205 to enter and exit, and the expansion tank 2 further comprises a fixing member 203 arranged outside the box 201 and a sealing cover 204 sealing the relief hole, the fixing member 203 has a containing space for containing the sealing cover 204, the sealing cover 204 is provided with a clearance hole corresponding to the liquid inlet, and the sealing cover 204 and the fixing member 203 are detachably connected.

[0044] The setting of the avoiding hole provides independent operation space for the installation, cleaning and replacement of the filter 205, and the filter 205 can be directly maintained through the avoiding hole without overall disassembly of the expansion water tank 2, thereby completely solving the difficult maintenance problem caused by the built-in filter 205 in the traditional structure. The detachable connection mode of the sealing cover 204 and the fixing part 203 can realize quick disassembly and assembly, combined with the quick positioning function of the installation buckle 206, to form a full-process convenient design from water tank fixing to internal component maintenance, which not only reduces the maintenance cost, but also reduces the influence of maintenance operation on the normal operation of the cooling system through structure optimization.

[0045] Optionally, the fixing part 203 has an internal thread in the containing space, the sealing cover 204 has an external thread matched with the internal thread, and the sealing cover 204 is screwed with the fixing part 203. Or the sealing cover 204 is clamped with the fixing frame.

[0046] Please refer to Figure 5 In some embodiments, the fixing part 203 includes a fixed body 2031 connected to the tank body 201 and a clamping part 2032 connected to the fixed body 2031, the fixed body 2031 is a cylindrical member, and a central hole of the fixed body 2031 forms the containing space, and the clamping part 2032 is arranged on an inner circumferential surface of the fixed body 2031 and used for clamping cooperation with the sealing cover 204.

[0047] The cylindrical fixed body 2031 serves as a support carrier, and the containing space formed by the central hole provides accurate positioning and guidance for the sealing cover 204, so as to ensure that the avoiding hole of the sealing cover 204 is always coaxially connected with the liquid inlet of the tank body 201, and avoid the problems of poor cooling liquid flow or sealing failure caused by installation deviation. The clamping part 2032 forms a buckle type quick connection with the sealing cover 204, without bolt fastening, and the installation and fixation of the sealing cover 204 can be realized only by pressing, which significantly improves the disassembly and assembly efficiency during maintenance of the filter 205, and is especially suitable for quick maintenance operation in the space-limited vehicle bottom or internal position of the cabin. At the same time, the clamping cooperation structure has elastic pre-tightening force, can keep stable connection in the vehicle driving vibration environment, effectively prevents the risk of cooling liquid leakage caused by loosening of the sealing cover 204 due to high-frequency vibration, and has the dual advantages of simplifying the structure complexity and realizing tool-free maintenance and high-reliability sealing through the mechanical clamping principle, compared with the traditional threaded connection or flange connection.

[0048] Please refer to Figure 1 In some embodiments, the fixed body 2031 is provided with a plurality of deformation grooves 2033 spaced apart along the circumferential direction of the fixed body 2031, the deformation grooves 2033 extend along the axial direction of the fixed body 2031, and are communicated with one end of the fixed body 2031.

[0049] The deformation groove 2033 extends axially along the fixed body 2031 and is connected at one end. When the sealing cover 204 is inserted, the clamping portion 2032 can be self-adapted by the elastic expansion of the deformation groove 2033 to adjust the clamping gap, without the need for accurate alignment to achieve smooth installation. In addition, the arrangement of the deformation groove 2033 also improves the impact resistance of the fixed body 2031. When the sealing cover 204 is subjected to accidental external force, the deformation groove 2033 can release stress by local deformation to prevent cracks at the connection between the fixed body 2031 and the tank 201 due to stress concentration, and complement the elastic pre-tightening force of the clamping portion 2032 to ensure that the filter 205 maintenance channel can still maintain stable sealing and reliable connection under long-term high-frequency vibration working conditions.

[0050] Please refer to Figure 4 In some embodiments, the filter 205 includes a fixed support 2051 arranged in the tank 201 and a filter element 2052 arranged in the fixed support 2051. The cooling liquid passes through the filter element 2052 and then flows in the tank 201 through the fixed support 2051.

[0051] The fixed support 2051 serves as a carrier for the filter element 2052, and its rigid support structure can ensure that the filter element 2052 remains stable in position under long-term cooling liquid scouring and pressure fluctuation environment, avoiding filter blind area or flow passage blockage caused by displacement of the filter element 2052, thereby ensuring the continuity and reliability of the filtration process from a structural perspective. The filter element 2052 is tightly installed on the inner side of the fixed support 2051 and can accurately intercept impurities such as suspended solids and metal debris in the cooling liquid. The porous filter material and the flow guiding pores of the fixed support 2051 form a gradient filtration system, which effectively filters impurities while reducing fluid resistance. After the cooling liquid is filtered by the filter element 2052, it is evenly distributed to the tank 201 through the fixed support 2051, reducing local pressure concentration. In addition, when the filter element 2052 needs to be cleaned or replaced, it can be directly removed through the avoidance hole by only disassembling the sealing cover 204, significantly improving the convenience of maintenance operations.

[0052] Optionally, the fixed support 2051 is integrally formed with the tank 201 or detachably connected.

[0053] In some embodiments, the filter circuit further includes a liquid level sensor arranged in the tank 201, which is in communication connection with the controller.

[0054] The liquid level sensor collects liquid level data in the tank 201 in real time and feeds back to the controller, which can accurately identify the liquid level fluctuation under abnormal working conditions such as liquid flow obstruction, cooling liquid leakage or evaporation loss caused by filter 205 blockage. When the liquid level is lower or higher than the preset safety threshold, the controller can trigger the alarm device and adjust the flow distribution simultaneously to prevent the cooling system from failing to dissipate heat due to insufficient liquid level.

[0055] Based on the same inventive concept, the application further provides a vehicle comprising the cooling system.

[0056] The cooling system and the vehicle provided by the application have the following advantages: compared with the prior art, when the internal pressure of the filter 205 is not higher than the preset value P and the filter line is normally working, the filter 205 can intercept and filter impurities such as suspended matters and corrosion products in the cooling liquid, so as to avoid the blockage of the cooling system pipeline and components and ensure the long-term stable operation of the system; when the internal pressure of the filter 205 is higher than the preset value P due to the accumulation of impurities, the pressure detector can sense the pressure change in real time and automatically switch to the emergency line through the controller, so that the cooling liquid directly returns through the emergency pipe 4, which can not only prevent the risks such as pipeline rupture and sealing failure caused by the abnormal increase of the internal pressure of the expansion tank 2, but also ensure the continuous operation of the cooling system in the filter 205 blockage state, so as to avoid the interruption of equipment operation caused by shutdown maintenance. At the same time, the setting of the control module realizes the real-time monitoring and intelligent response of the filter 205 blockage state, so that the emergency mechanism can be automatically triggered without frequent manual inspection, which significantly improves the safety and reliability of the cooling system. The parallel design of the filter line and the emergency line provides independent maintenance space for the cleaning or replacement of the filter 205, and the cooling system can work normally through the emergency line during the maintenance process, which effectively overcomes the defect that the traditional structure must be shut down during maintenance, greatly improves the working continuity and practicability of the system. The application provides the filter line and the emergency line in parallel, and configures the pressure detection and control module in the expansion tank 2, which effectively solves the system failure and maintenance shutdown problem caused by the filter 205 blockage in the prior art.

[0057] The above only describes the preferred embodiments of the application and should not be used to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. Cooling system, characterized in that The cooling system comprises a filter circuit and an emergency circuit in parallel with each other, the filter circuit comprises a cooling pipe, an expansion water tank and a return pipe connected in series, and the emergency circuit comprises the cooling pipe, an emergency pipe and the return pipe connected in series, the expansion water tank comprises: a box body provided with an inlet and an outlet, the cooling pipe is inserted into the inlet, and the return pipe is inserted into the outlet; a filter arranged in the box body and corresponding to the inlet, and an outlet end of the cooling pipe is located in the filter; and a control module comprising a pressure detector arranged in the filter and a controller in communication connection with the pressure detector; when the pressure in the filter is not higher than P, the controller controls the filter circuit to be turned on and the emergency circuit to be turned off; and when the pressure in the filter is higher than P, the controller controls the emergency circuit to be turned on and the filter circuit to be turned off.

2. The cooling system of claim 1, wherein, The emergency circuit further comprises a standby water tank in communication with the emergency pipe, and the standby water tank is used for adjusting the pressure of the emergency circuit when the emergency circuit is turned on.

3. The cooling system of claim 1, wherein, The box body is further provided with a gas overflow port, and the filter circuit further comprises a pressure sensor arranged in the box body and an exhaust valve arranged at the gas overflow port, and the pressure sensor and the exhaust valve are in communication connection with the controller.

4. The cooling system of claim 1, wherein, The expansion water tank further comprises a mounting buckle arranged outside the box body, and the mounting buckle is used for clamping cooperation with a mounting frame.

5. The cooling system of claim 1, wherein, The box body is provided with a avoiding hole for the filter to enter and exit, the expansion water tank further comprises a fixing member arranged outside the box body and a sealing cover covering the avoiding hole, the fixing member has a containing space for accommodating the sealing cover, the sealing cover is provided with a clearance hole corresponding to the inlet, and the sealing cover is detachably connected with the fixing member.

6. The cooling system of claim 5, wherein, The fixing member comprises a fixing body connected with the box body and a clamping portion connected with the fixing body, the fixing body is a cylindrical member, a central hole of the fixing body forms the containing space, and the clamping portion is arranged on an inner circumferential surface of the fixing body and used for clamping cooperation with the sealing cover.

7. The cooling system of claim 6, wherein, A plurality of deformation grooves are arranged on the fixing body along a circumferential direction of the fixing body, the deformation grooves extend along an axial direction of the fixing body and are in communication with one end of the fixing body.

8. The cooling system of claim 1, wherein, The filter comprises a fixed support arranged in the box body and a filter element arranged on the fixed support, and cooling liquid flows in the box body through the fixed support after passing through the filter element.

9. The cooling system of claim 1, wherein, The filter circuit further comprises a liquid level sensor arranged in the box body, and the liquid level sensor is in communication connection with the controller.

10. Vehicle, characterized in that The cooling system comprises the cooling system according to any one of claims 1 to 9.

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