Reservoir, thermal management system, and vehicle

Abstract

This utility model belongs to the field of vehicle technology, disclosing a liquid reservoir, a thermal management system, and a vehicle. The liquid reservoir, by providing at least two sealing parts distributed axially along the through-hole, achieves at least two seals between the signal transmission component and the liquid reservoir body. Compared to using a single sealing part, the probability of water vapor in the liquid reservoir leaking through the gap between the signal transmission component and the through-hole is significantly reduced, improving the reliability of the sensor. The thermal management system provided by this utility model includes a liquid reservoir. By employing the aforementioned liquid reservoir, the probability of water vapor in the liquid reservoir leaking through the gap between the signal transmission component and the through-hole is reduced, thereby reducing the probability of water vapor in the liquid reservoir entering the heat pipe domain controller through the sensor and causing the thermal management controller to fail, thus improving the reliability of the thermal management system. The vehicle provided by this utility model includes the aforementioned thermal management system, ensuring the normal operation of the vehicle by improving the reliability of the heat pipe system.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a liquid reservoir, a thermal management system, and a vehicle. Background Technology

[0002] The expansion tank is an important component of the engine cooling system. It is responsible for collecting and regulating the volume fluctuations of engine coolant caused by temperature changes.

[0003] The expansion tank is equipped with a level sensor. The sensor's probe extends into the tank to detect whether the coolant level is within the required range. The level sensor is electrically connected to the vehicle's thermal management domain controller. When the coolant level in the tank falls below the minimum allowable level, the thermal management domain controller sends an alarm signal to the vehicle's central control screen, reminding the driver to add coolant to the tank in time to prevent insufficient coolant from causing malfunctions in the thermal management system or limiting the vehicle's power.

[0004] The current installation method of liquid level sensor is as follows: The liquid level sensor includes a male connector, a female connector, a probe mounting piece, and at least two probes. The probes are integrally formed in the probe mounting piece, and the probe mounting piece is press-fitted into the male connector with an interference fit. The male connector and the female connector are sealed together. The vessel body and the probes are connected by an O-ring seal. The female connector is connected to the thermal management domain controller via a signal line.

[0005] Because O-rings are not very robust in sealing, if an O-ring fails to seal, moisture inside the reservoir will leak between the male and female connectors, affecting the reliability of the level sensor. Utility Model Content

[0006] The purpose of this invention is to provide a liquid reservoir, a thermal management system, and a vehicle to solve the problem of abnormal or failed liquid level sensors.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] Liquid reservoir, including:

[0009] A liquid storage container body having a medium cavity for containing a medium, and the liquid storage container body having a through hole;

[0010] The sensor includes a signal transmission element, one end of which extends into the medium cavity through the through hole;

[0011] A first sealing element is sandwiched between the inner peripheral wall of the through hole and the outer peripheral wall of the signal transmission element, and the first sealing element includes at least two sealing portions distributed along the axial direction of the through hole.

[0012] As one possible embodiment of the above-mentioned liquid reservoir, the outer periphery of the signal transmission element is connected to a blocking part, and along the axial direction of the signal transmission element, the blocking part is disposed between two adjacent sealing parts; the outer diameter of the sealing part is larger than the outer diameter of the blocking part and the inner diameter of the sealing part is smaller than the inner diameter of the blocking part.

[0013] As one possible implementation of the above-mentioned liquid reservoir, the blocking part is interference-fitted with the signal transmission element; and / or, the blocking part is a retaining ring.

[0014] As one possible implementation of the above-mentioned liquid reservoir, two adjacent sealing parts are respectively a first sealing part and a second sealing part. The outer periphery of the signal transmission element is sealed with an annular expanded diameter part, and the second sealing part is correspondingly sleeved on the outside of the expanded diameter part. Along the axial direction of the through hole, the first sealing part is closer to the medium cavity than the second sealing part, and the inner diameter of the second sealing part is larger than the inner diameter of the first sealing part.

[0015] As one possible implementation of the above-mentioned liquid reservoir, the enlarged diameter portion is welded to or integrally formed on the signal transmission component.

[0016] As one possible implementation of the above-mentioned liquid reservoir, the sensor further includes a male connector, one end of the enlarged diameter portion is sealed to the male connector, and the other end is sealed to the barrier portion.

[0017] As one possible implementation of the above-mentioned liquid reservoir, one end of the enlarged diameter portion is integrally injection molded with the male connector portion, and the other end is integrally injection molded with the barrier portion.

[0018] As one possible implementation of the above-mentioned liquid reservoir, the first sealing element further includes a sealing connection portion sleeved outside the signal transmission element, two adjacent sealing portions are connected through the sealing connection portion, and the two adjacent sealing portions and the sealing connection portion connecting the two sealing portions are integrally formed structural components.

[0019] As one possible implementation of the above-mentioned liquid reservoir, the sealing connection portion forms the barrier portion.

[0020] As one possible implementation of the above-mentioned liquid reservoir, the sensor further includes a male connector, and the signal transmission component is integrally injection molded into the male connector; one end of the male connector is connected to the liquid reservoir body to form an assembly cavity, and the through hole is opened in the part of the liquid reservoir body that forms the assembly cavity; the inner wall of the assembly cavity is provided with a discharge hole that connects to the outside atmosphere.

[0021] As one possible implementation of the above-mentioned liquid reservoir, an exhaust channel is formed between the male connector and the liquid reservoir body, or an exhaust channel is provided on the liquid reservoir body, or an exhaust channel is provided on the male connector.

[0022] The assembly cavity is connected to the outside atmosphere through the exhaust channel.

[0023] As one possible implementation of the above-mentioned liquid reservoir, the liquid reservoir body includes a liquid reservoir main body and a mounting connection portion protruding from the outer wall of the liquid reservoir main body, wherein the lower end of the male connector is inserted into the mounting connection portion in an interference fit manner.

[0024] The exhaust passage is formed between the outer peripheral wall of the male connector and the inner peripheral wall of the mounting connection, and the exhaust hole is located below the interference fit position between the male connector and the mounting connection.

[0025] As one possible implementation of the above-mentioned liquid reservoir, the discharge hole is formed on the circumferential sidewall of the mounting connection.

[0026] This utility model also provides a thermal management system, including a liquid reservoir as provided in any of the above-described embodiments.

[0027] This utility model also provides a vehicle, including the aforementioned thermal management system.

[0028] The beneficial effects of this utility model are:

[0029] The liquid reservoir provided by this utility model achieves at least two seals between the signal transmission component and the liquid reservoir body by setting at least two sealing parts distributed along the axial direction of the through hole. Compared with setting a single sealing part, the probability of water vapor in the liquid reservoir body leaking through the gap between the signal transmission component and the through hole can be greatly reduced, thereby improving the reliability of the sensor.

[0030] The thermal management system provided by this utility model includes the above-mentioned liquid reservoir. By using the above-mentioned liquid reservoir, the probability of water vapor in the liquid reservoir leaking through the gap between the signal transmission component and the through hole is reduced, thereby reducing the probability of water vapor in the liquid reservoir entering the thermal pipe domain controller through the sensor and causing the thermal management controller to fail, so as to improve the reliability of the thermal management system.

[0031] The vehicle provided by this utility model includes the aforementioned thermal management system, which ensures the vehicle can operate normally by improving the reliability of the heat pipe system. Attached Figure Description

[0032] Figure 1 This is a partial schematic diagram of the liquid reservoir provided in Embodiment 1 of this utility model;

[0033] Figure 2This is a schematic diagram of the structural principle of the thermal management system provided in Embodiment 1 of this utility model;

[0034] Figure 3 This is a partial cross-sectional view of the liquid reservoir provided in Embodiment 1 of this utility model;

[0035] Figure 4 This is a schematic diagram of the structural principle of the thermal management system provided in Embodiment 2 of this utility model;

[0036] Figure 5 This is a partial cross-sectional view of the liquid reservoir provided in Embodiment 2 of this utility model;

[0037] Figure 6 This is a schematic diagram of the structural principle of the thermal management system provided in Embodiment 3 of this utility model;

[0038] Figure 7 This is a first partial sectional view of the liquid reservoir provided in Embodiment 3 of this utility model;

[0039] Figure 8 This is a second partial cross-sectional view of the liquid reservoir provided in Embodiment 3 of this utility model.

[0040] In the picture:

[0041] 1. Liquid reservoir body; 11. Liquid reservoir main body; 111. Medium chamber; 12. Mounting connection part; 121. Discharge hole; 122. Rib; 13. Limiting part;

[0042] 2. Sensor; 211. Male connector; 212. Female connector; 22. Signal transmission component; 23. Second seal; 24. Signal line; 25. First seal; 251. First sealing part; 252. Second sealing part; 253. Sealed connection part; 26. Barrier part; 27. Enlarged diameter part;

[0043] 3. Thermal management domain controller;

[0044] 100. Assembly cavity. Detailed Implementation

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0046] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0049] Example 1

[0050] This invention provides a liquid reservoir, including a thermal management system for the liquid reservoir, and a vehicle including the thermal management system, to reduce the probability of leakage of the medium inside the liquid reservoir through the connection between the signal transmission component and the liquid reservoir body. It should be noted that the liquid reservoir in this embodiment refers to an expansion tank in a vehicle, but the liquid reservoir provided by this invention can also be other liquid reservoirs employing sensors, which are not specifically limited here. The medium is coolant, preferably water, and the water vapor is formed by the evaporation of water. This thermal management system can be applied to pure electric vehicles and hybrid vehicles equipped with expansion tanks, as well as pure fuel vehicles equipped with expansion tanks, or new energy vehicles using other fuels such as methanol or natural gas and equipped with expansion tanks.

[0051] like Figures 1 to 3As shown, the liquid reservoir includes a reservoir body 1, a sensor 2, and a first sealing element 25. The reservoir body 1 has a medium cavity 111 for containing the medium and a through hole. The sensor 2 includes a signal transmission element 22, one end of which passes through the through hole and extends into the medium cavity 111. The first sealing element 25 is sandwiched between the inner peripheral wall of the through hole and the outer peripheral wall of the signal transmission element 22, and includes at least two sealing portions distributed along the axial direction of the through hole. Exemplarily, the signal transmission element 22 is a pin, each sensor 2 includes at least two pins, each signal transmission element 22 is equipped with two sealing portions, and the sensor 2 is a liquid level sensor. It should be noted that the sensor 2 can also be other types of sensors, such as temperature sensors, pressure sensors, etc.

[0052] By setting at least two sealing parts distributed along the axial direction of the through hole, at least two seals are achieved between the signal transmission element 22 and the liquid reservoir body 1. Compared with setting a single sealing part, the probability of water vapor in the liquid reservoir body 1 leaking through the gap between the signal transmission element 22 and the through hole can be greatly reduced.

[0053] After heat exchange, the temperature and pressure of the medium inside the reservoir 1 are generally high, resulting in a high temperature for the signal transmission component 22 and correspondingly a high temperature for the sealing portion. Under high temperature and high pressure conditions, adjacent sealing portions are prone to sticking together, causing the sealing performance of the first sealing component 25 to fail. To solve this technical problem, in some embodiments, a barrier portion 26 is connected to the outer periphery of the signal transmission component 22. Along the axial direction of the signal transmission component 22, the barrier portion 26 is located between two adjacent sealing portions; the outer diameter of the sealing portion is larger than the outer diameter of the barrier portion 26, and the inner diameter of the sealing portion is smaller than the inner diameter of the barrier portion 26.

[0054] By limiting the outer diameter of the sealing part to be larger than the outer diameter of the barrier part 26 and the inner diameter of the sealing part to be smaller than the inner diameter of the barrier part 26, the barrier part 26 will not affect the sealing function of the sealing part; by separating two adjacent sealing parts by the barrier part 26, the two adjacent sealing parts will be prevented from sticking together under high temperature and high pressure, which would cause the sealing performance of the first sealing member 25 to fail, thereby improving the sealing effect after the signal transmission member 22 is sealed and inserted into the through hole through the first sealing member 25.

[0055] In some embodiments, such as Figure 2 and Figure 3As shown, the blocking part 26 is interference-fitted with the signal transmission component 22, resulting in a simple installation method and low cost. Taking the first sealing component 25, which includes two sealing parts, as an example, for ease of description, the two sealing parts are referred to as the first sealing part 251 and the second sealing part 252, respectively. Along the axial direction of the through hole, the first sealing part 251 is closer to the medium cavity 111 than the second sealing part 252. When installing the first sealing component 25, the second sealing part 252 is first fitted onto the signal transmission component 22, then the blocking part 26 is press-fitted onto the signal transmission component 22 with an interference fit, and then the first sealing part 251 is placed on the signal transmission component 22, so that the blocking part 26 is located between the first sealing part 251 and the second sealing part 252.

[0056] Since the barrier 26 is installed after the second sealing part 252 is installed, in other words, the barrier 26 does not affect the installation of the second sealing part 252. Therefore, the first sealing part 251 and the second sealing part 252 with the same inner diameter can be used.

[0057] For example, the sealing part is an O-ring, which helps to reduce the cost of the liquid reservoir.

[0058] For example, the barrier portion 26 is a retaining ring, such as a plastic retaining ring, which is low in cost; the plastic retaining ring is interference-fitted onto the outside of the barrier portion 26, making installation convenient.

[0059] In some embodiments, such as Figure 2 and Figure 3 As shown, the thermal management system provided in the embodiment of this utility model further includes a thermal management domain controller 3, and the signal transmission component 22 is communicatively connected to the thermal management domain controller 3 via a signal line 24. Specifically, one end of the signal line 24 is communicatively connected to the signal transmission component 22 within the female connector 212 of the sensor 2, and the other end is communicatively connected to the thermal management domain controller 3.

[0060] The connection position of signal line 24 to thermal management domain controller 3 is the first position. Sensor 2 includes a male connector 211 and a female connector 212 that connects to it. The lowest position of the female connector 212 located within the male connector 211 is the second position. Based on installation requirements, the first position is lower than the second position. Specifically, the height difference between the first position and the second position is denoted as ΔH.

[0061] Existing sensors also include a female connector, a male connector, and an integrated section. The signal transmission component is integrally formed in the integrated section, and the integrated section and the male connector are mated together with an interference fit. The male connector is integrally formed in the expansion tank, and the male connector and the female connector are mated together with a sealed fit. If both seals fail, water vapor in the expansion tank will leak through the gap between the through hole and the signal transmission component into the space between the female and male connectors. The water vapor has a certain pressure, and under the pressure, the water vapor will enter the signal line through the gap between the signal transmission component and the female connector, thus entering the connection point between the thermal management controller and the signal line, causing the thermal management controller to fail.

[0062] To solve the above-mentioned technical problems, in some embodiments, such as Figure 2 and Figure 3 As shown, the signal transmission component 22 is integrally injection molded into the male connector 211; one end of the male connector 211 is connected to the liquid reservoir body 1 to form an assembly cavity 100, and a through hole is opened in the part of the liquid reservoir body 1 that forms the assembly cavity 100.

[0063] Specifically, a male connector 211 is injection molded onto the outside of the signal transmission component 22, eliminating any tolerance gaps between the signal transmission component 22 and the male connector 211, effectively preventing coolant leakage from the connection between the male connector 211 and the signal transmission component 22. Even under the most demanding operating conditions where all seals fail, causing coolant leakage through the gap between the signal transmission component 22 and the through hole, the leaked coolant and moisture can only leak into the outside atmosphere through the gap between the male connector 211 and the reservoir body 1.

[0064] This embodiment uses the aforementioned sensor 2 to reduce the possibility of water vapor leaking from the liquid reservoir 1 entering the sensor 2, thereby minimizing the possibility of water vapor in the assembly cavity 100 being transmitted to the thermal management domain controller 3, and thus preventing the thermal management domain controller 3 from failing due to water ingress.

[0065] Specifically, the reservoir body 1 includes a reservoir main body 11 and a mounting connection portion 12 protruding from the outer wall of the reservoir main body 11. The lower end of the male connector 211 is inserted into the mounting connection portion 12. The outer wall of the reservoir main body 11, the male connector 211, and the mounting connection portion 12 form an assembly cavity 100. A through hole is formed in the portion of the reservoir main body 11 that forms the assembly cavity 100. Alternatively, the upper end of the mounting connection portion 12 can be inserted into the lower end of the male connector 211.

[0066] For example, the mounting connection 12 is provided on the annular boss protruding from the top wall of the reservoir body 11. The annular boss is integrally injection molded into the reservoir body 11, which simplifies the processing of the annular boss, reduces processing costs, and eliminates the need for additional sealing components to ensure a sealed connection between the annular boss and the reservoir body 11.

[0067] In some embodiments, such as Figure 2 and Figure 3 As shown, the end of the signal transmission component 22 furthest from the medium cavity 111 is installed inside the female connector 212, and the end of the male connector 211 furthest from the medium cavity 111 is sealed and plugged into the female connector 212. This prevents external moisture from easily penetrating the gap between the male connector 211 and the female connector 212, thus improving the dustproof and waterproof performance of the sensor 2. Specifically, the upper end of the male connector 211 is sealed to the female connector 212 by a second sealing element 23 to reduce the possibility of external moisture and dust entering the sensor 2 through the gap between the male connector 211 and the female connector 212. This reduces the likelihood of moisture entering the sensor 2 and then entering the heat pipe controller 3 through the signal line 24, thereby ensuring the reliability of the heat pipe controller 3.

[0068] In some embodiments, such as Figure 2 and Figure 3 As shown, the lower end of the male connector 211 is inserted into the mounting connection part 12 with an interference fit to improve the connection between the liquid reservoir body 1 and the male connector 211.

[0069] Specifically, one of the mounting connection portion 12 and the male connector portion 211 is provided with a rib 122, and the other is press-fitted with the rib 122. Specifically, the outer peripheral wall of the male connector portion 211 is provided with the rib 122, and the rib 122 and the male connector portion 211 are integrally injection molded. Press-fitting the rib 122 with the inner peripheral wall of the mounting connection portion 12 improves the connection strength between the reservoir body 1 and the male connector portion 211. Exemplarily, the rib 122 is an annular structure extending circumferentially along the male connector portion 211. Alternatively, the rib 122 can also be provided on the inner peripheral wall of the mounting connection portion 12, and press-fitted with the rib 122 with the male connector portion 211. Ribs 122 can also be provided on both the mounting connection part 12 and the male insertion part 211. Specifically, ribs 122 that are interference-fitted with the inner peripheral wall of the mounting connection part 12 are provided on the outer peripheral wall of the male insertion part 211, and ribs 122 that are interference-fitted with the outer peripheral wall of the male insertion part 211 are provided on the inner peripheral wall of the mounting connection part 12.

[0070] In some embodiments, such as Figure 2 and Figure 3 As shown, the inner wall of the assembly cavity 100 is provided with a discharge hole 121 that connects to the outside atmosphere. Even if all sealing parts fail under harsh operating conditions and water vapor leaks, the leaked water vapor and medium entering the assembly cavity 100 can be discharged into the outside atmosphere through the discharge hole 121.

[0071] In some embodiments, such as Figure 2 and Figure 3 As shown, an exhaust channel is formed between the male connector 211 and the mounting connection 12, and the assembly cavity 100 is connected to the outside atmosphere through the exhaust channel. Under harsh operating conditions, if all seals fail, the water vapor leaking into the assembly cavity 100 can be discharged to the outside atmosphere through the exhaust channel to avoid excessive pressure inside the assembly cavity 100.

[0072] Specifically, taking the lower end of the male connector 211 as an example where it is inserted into the mounting connection 12 with an interference fit, the exhaust channel is formed between the outer peripheral wall of the male connector 211 and the inner peripheral wall of the mounting connection 12, and the exhaust hole 121 is located below the position where the male connector 211 and the mounting connection 12 are in interference fit.

[0073] By placing the drain hole 121 below the interference fit position between the male connector 211 and the mounting connection 12, it is possible to prevent the water vapor leaking into the assembly cavity 100 from being unable to be discharged to the outside atmosphere in time when the coolant level in the assembly cavity 100 is higher than the drain hole 121, thus preventing water vapor from continuously accumulating in the assembly cavity 100 and affecting safety. This ensures that the water vapor leaking into the assembly cavity 100 can be discharged not only through the drain hole 121, but also through the exhaust channel to the outside atmosphere.

[0074] It should be noted that, due to process limitations, the male connector 211 and the mounting connection 12 are interference-fitted, which can only block drainage but not exhaust. Therefore, water vapor leaking into the assembly cavity 100 can be discharged into the outside atmosphere through the exhaust channel, without the need for a separate exhaust channel.

[0075] Alternatively, the venting channel can be formed on the liquid reservoir body 1, such as by directly forming a through hole in the mounting connection part 12. The venting channel can also be formed on the male connector part 211, such as by directly forming a through hole in the male connector part 211.

[0076] As an alternative, when the upper end of the mounting connector 12 is inserted into the male connector 211 with an interference fit, an exhaust channel is formed between the outer peripheral wall of the mounting connector 12 and the inner peripheral wall of the male connector 211. In this case, the exhaust hole 121 is required to be located below the upper end face of the mounting connector 12 to prevent coolant leakage into the assembly cavity 100. If the coolant level is higher than the mounting connector 12, coolant will enter the exhaust channel, thus affecting the exhaust of coolant in the exhaust channel above the interference fit position between the male connector 211 and the mounting connector 12.

[0077] like Figure 2 and Figure 3As shown, the interference fit between the male connector 211 and the mounting connection 12 is the location of the rib 122; in other words, the drain hole 121 is located below the rib 122. This arrangement ensures that coolant and water vapor leaking into the assembly cavity 100 are preferentially discharged to the outside atmosphere through the drain hole 121, while water vapor escaping above the drain hole 121 can be discharged to the outside atmosphere through the exhaust channel. This avoids the drain hole 121 being higher than the rib 122, which would hinder coolant discharge. For example, the drain hole 121 is formed on the circumferential sidewall of the connection, specifically located at the lower part of the circumferential sidewall of the connection, to facilitate timely discharge of coolant leaking into the assembly cavity 100, preventing the coolant level in the assembly cavity 100 from rising to the rib 122 due to untimely coolant discharge, thus preventing the exhaust channel from being unable to vent.

[0078] In some embodiments, such as Figure 2 and Figure 3 As shown, a limiting part 13 protrudes from the bottom wall of the assembly cavity 100. When the mounting connection part 12 presses against the limiting part 13 along the insertion direction of the mounting connection part 12 and the male insertion part 211, it indicates that the press-fit is in place, thus preventing excessive press-fitting stroke and structural damage. For example, the limiting part 13 protrudes from the top wall of the liquid reservoir body 11 and is integrally injection molded into the liquid reservoir body 11, which is convenient to process and has low processing cost.

[0079] Example 2

[0080] The difference between this embodiment and Embodiment 1 is that: Figure 4 and Figure 5 As shown, the connection between the blocking part 26 and the signal transmission element 22 is different. Specifically, the outer periphery of the signal transmission element 22 is sealed with an annular expanded diameter part 27, and the second sealing part 252 is sealed outside the expanded diameter part 27; the first sealing part 251 is closer to the medium cavity 111 than the second sealing part 252, and the inner diameter of the second sealing part 252 is larger than the inner diameter of the first sealing part 251.

[0081] For ease of description, the two sealing parts are referred to as the first sealing part 251 and the second sealing part 252, respectively. Along the axial direction of the through hole, the first sealing part 251 is closer to the medium cavity 111 than the second sealing part 252. In actual installation, if the blocking part 26 is already fixedly sleeved on the signal transmission component 22 before the second sealing part 252 is installed, the second sealing part 252 may break due to excessive stretching during installation. By limiting the inner diameter of the second sealing part 252 to be larger than the inner diameter of the first sealing part 251, excessive stretching of the second sealing part 252 during installation can be avoided.

[0082] For example, the expanded diameter portion 27 is welded to the signal transmission component 22, and the welding method is simple and low-cost. For example, the expanded diameter portion 27 is a welded ring. As an alternative, the expanded diameter portion 27 can also be integrally formed into the signal transmission component 22.

[0083] In some embodiments, such as Figure 4 and Figure 5 As shown, one end of the enlarged diameter portion 27 is sealed and connected to the male connector portion 211, and the other end is sealed and connected to the barrier portion 26. Specifically, one end of the enlarged diameter portion 27 is integrally injection molded with the male connector portion 211, and the other end is integrally injection molded with the barrier portion 26.

[0084] This configuration allows one end of the enlarged diameter section 27 to be sealed to the male connector 211 and the signal transmission component 22, while the other end of the enlarged diameter section 27 is sealed to the barrier section 26 and the signal transmission component 22, thereby preventing water vapor in the liquid reservoir 1 from entering between the signal transmission component 22 and the male connector 211 through the gap between the signal transmission component 22 and the enlarged diameter section 27.

[0085] When processing sensor 2, the expanded diameter portion 27 is first fitted onto the signal transmission component 22, and then the expanded diameter portion 27 is welded to a predetermined position on the signal transmission component 22. Then, when processing the male connector 211 by injection molding, the blocking portion 26 is simultaneously injection molded, so that one end of the expanded diameter portion 27 is integrally injection molded into the male connector 211, and the other end is integrally injection molded into the blocking portion 26. When installing the first seal 25, the second seal 252 is first fitted onto the expanded diameter portion 27, and then the first seal 251 is fitted onto the end of the signal transmission component 22 near the medium cavity 111. This achieves separation of the first seal 251 and the second seal 252 by the blocking portion 26, preventing the first seal 251 and the second seal 252 from sticking together under high temperature and high pressure conditions. Furthermore, the male connector 211 has the function of sealingly connecting one end of the expanded diameter portion 27 and the signal transmission member 22, and the barrier portion 26 has the function of sealingly connecting the other end of the expanded diameter portion 27 and the signal transmission member 22.

[0086] As an alternative, while ensuring that the blocking part 26 is fixed to the signal transmission member 22 before the second sealing part 252 in this embodiment, the blocking part 26 can also be interference-fitted onto the outside of the signal transmission member 22 while providing the enlarged diameter part 27, and sealant can be applied between the blocking part 26 and the signal transmission member 22 to prevent air leakage between them. Alternatively, the weld formed by welding the blocking part 26 and the signal transmission member 22 can be an annular weld extending circumferentially along the signal transmission member 22, so that the blocking part 26 is fixed to the signal transmission member 22 by welding while the blocking part 26 and the signal transmission member 22 are sealed together.

[0087] Example 3

[0088] The difference between this embodiment and Embodiment 1 is that: Figures 6 to 8 As shown, the connection methods between the blocking part 26 and the signal transmission component 22 are different. Specifically, the first sealing component 25 also includes a sealing connection part 253 sleeved on the outside of the signal transmission component 22. Two adjacent sealing parts are connected by the sealing connection part 253, and the two adjacent sealing parts and the sealing connection part 253 connecting the two sealing parts are integrally formed structural parts. In other words, the first sealing component 25 is a special-shaped sealing ring. Taking the first sealing component 25 as having two sealing parts as an example, the first sealing component 25 is specifically a double-ribbed special-shaped ring. In its natural state, the outer diameter of the sealing part is larger than the outer diameter of the sealing connection part 253, and the inner diameter of the sealing part is smaller than the inner diameter of the sealing connection part 253. The double-ribbed special-shaped ring achieves two seals on the through hole and the signal transmission component 22.

[0089] The sealing performance of the double-ribbed profiled ring is between that of a single O-ring and two independently assembled O-rings. Through testing, it was found that using the double-ribbed profiled ring can improve the sealing reliability between the signal transmission component 22 and the through hole, so as to meet the sealing requirements between the signal transmission component 22 and the through hole.

[0090] In some embodiments, the sealing connection portion 253 forms a barrier portion 26, which separates the two sealing portions connected thereto to prevent the two sealing portions from sticking together under high temperature and high pressure. The two sealing portions are separated by the structure of the first sealing member 25 itself, and the first sealing member 25 only needs to be sealed and fitted around the outer periphery of the signal transmission member 22, which simplifies the installation of the first sealing member 25.

[0091] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A liquid reservoir, characterized in that, include: The liquid storage body (1) has a medium cavity (111) for containing the medium, and the liquid storage body (1) has a through hole; The sensor (2) includes a signal transmission element (22), one end of which extends through the through hole into the medium cavity (111); The first sealing element (25) is sandwiched between the inner peripheral wall of the through hole and the outer peripheral wall of the signal transmission element (22), and the first sealing element (25) includes at least two sealing portions distributed along the axial direction of the through hole.

2. The liquid reservoir according to claim 1, characterized in that, The signal transmission component (22) is connected to a blocking part (26) on its outer periphery. Along the axial direction of the signal transmission component (22), the blocking part (26) is disposed between two adjacent sealing parts. The outer diameter of the sealing part is larger than the outer diameter of the blocking part (26) and the inner diameter of the sealing part is smaller than the inner diameter of the blocking part (26).

3. The liquid reservoir according to claim 2, characterized in that, The blocking part (26) is interference-fitted with the signal transmission element (22); and / or, the blocking part (26) is a retaining ring.

4. The liquid reservoir according to claim 2, characterized in that, The two adjacent sealing parts are respectively the first sealing part (251) and the second sealing part (252). The outer periphery of the signal transmission component (22) is sealed with an annular expanded diameter part (27). The second sealing part (252) is sealed and sleeved outside the expanded diameter part (27). Along the axial direction of the through hole, the first sealing part (251) is closer to the medium cavity (111) than the second sealing part (252). The inner diameter of the second sealing part (252) is larger than the inner diameter of the first sealing part (251).

5. The liquid reservoir according to claim 4, characterized in that, The enlarged diameter portion (27) is welded to or integrally formed on the signal transmission component (22).

6. The liquid reservoir according to claim 4, characterized in that, The sensor (2) also includes a male connector (211), one end of the enlarged diameter portion (27) is sealed to the male connector (211), and the other end is sealed to the barrier portion (26).

7. The liquid reservoir according to claim 6, characterized in that, One end of the enlarged diameter portion (27) is integrally injection molded with the male connector portion (211), and the other end is integrally injection molded with the barrier portion (26).

8. The liquid reservoir according to claim 2, characterized in that, The first sealing member (25) further includes a sealing connection part (253) sleeved outside the signal transmission member (22). Two adjacent sealing parts are connected through the sealing connection part (253). The two adjacent sealing parts and the sealing connection part (253) connecting the two sealing parts are integrally formed structural parts.

9. The liquid reservoir according to claim 8, characterized in that, The sealing connection (253) forms the barrier (26).

10. The liquid reservoir according to claim 5, characterized in that, The sensor (2) also includes a male connector (211), one end of the enlarged diameter portion (27) is sealed to the male connector (211), and the other end is sealed to the barrier portion (26).

11. The liquid reservoir according to claim 10, characterized in that, One end of the enlarged diameter portion (27) is integrally injection molded with the male connector portion (211), and the other end is integrally injection molded with the barrier portion (26).

12. The liquid reservoir according to any one of claims 1 to 11, characterized in that, The sensor (2) also includes a male connector (211), and the signal transmission component (22) is integrally injection molded onto the male connector (211); one end of the male connector (211) is connected to the liquid reservoir body (1) to form an assembly cavity (100), and the through hole is opened in the part of the liquid reservoir body (1) that forms the assembly cavity (100); the inner wall of the assembly cavity (100) is provided with a discharge hole (121) that connects to the outside atmosphere.

13. The liquid reservoir according to claim 12, characterized in that, An exhaust channel is formed between the male connector (211) and the liquid reservoir body (1), or an exhaust channel is provided on the liquid reservoir body (1), or an exhaust channel is provided on the male connector (211). The assembly cavity (100) is connected to the outside atmosphere through the exhaust channel.

14. The liquid reservoir according to claim 13, characterized in that, The reservoir body (1) includes a reservoir body (11) and a mounting connection part (12) protruding from the outer wall of the reservoir body (11). The lower end of the male connector (211) is inserted into the mounting connection part (12) in an interference fit manner. The exhaust passage is formed between the outer peripheral wall of the male connector (211) and the inner peripheral wall of the mounting connection (12), and the exhaust hole (121) is located below the interference fit position between the male connector (211) and the mounting connection (12).

15. The liquid reservoir according to claim 14, characterized in that, The discharge hole (121) is opened on the circumferential sidewall of the mounting connection part (12).

16. A thermal management system, characterized in that, Includes the reservoir as described in any one of claims 1 to 15.

17. A vehicle, characterized in that, Includes the thermal management system of claim 16, or the liquid reservoir of any one of claims 1 to 15.

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