Control valve, battery pack and vehicle

Abstract

The utility model relates to a control valve, a battery pack and a vehicle, the control valve is used for being installed on a base body and comprises a valve body, a plugging piece, a driving piece and a sensing piece, the valve body is provided with a channel, and the channel is used for communicating the interior and the exterior of the base body; the blocking piece can move relative to the valve body so as to open or close the channel. The driving piece is used for driving the plugging piece to move; the sensing piece is connected to the driving piece, and the sensing piece can detect the driving force of the driving piece so as to be used for monitoring opening and closing of the channel. According to the technical scheme, the sensing piece can be used for monitoring and early warning the opening and closing conditions of the control valve, so that the opening and closing states of the control valve can be known in time, and the safety of the battery pack and the vehicle is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular, to a control valve, a battery pack and a vehicle. Background Art

[0002] During the use of the vehicle, the battery module needs to be cooled. Currently, liquid cooling is the most common cooling method. A small amount of condensed water or internal seepage water will be generated inside the battery pack. In addition, coolant leakage may occur due to damage to the liquid cooling pipe. The liquid in the battery pack may cause a short circuit in the battery module, thereby causing the risk of thermal runaway inside the battery pack.

[0003] In the related technology, the liquid in the battery pack can be discharged through the drain valve. When the drain valve is opened, the battery pack seal fails, the inside of the battery pack is connected to the outside, and the liquid outside the battery pack can easily flow back into the battery pack, causing the risk of short circuit and thermal runaway of the battery pack. Utility Model Content

[0004] The purpose of the present disclosure is to provide a control valve, a battery pack and a vehicle, which can warn of sealing failure of the battery pack to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present disclosure, a control valve is provided, which is used to be installed on a substrate, and the control valve comprises:

[0006] A valve body, wherein the valve body has a channel, and the channel is used to communicate the inside and the outside of the base;

[0007] A blocking member capable of moving relative to the valve body to open or close the passage;

[0008] a driving member, used for driving the blocking member to move; and

[0009] The sensing member is connected to the driving member, and the sensing member can detect the driving force of the driving member to monitor the opening and closing of the channel.

[0010] Optionally, the driving member includes a first driving portion, the first driving portion is used to drive the blocking member to move in a direction away from the valve body to open the channel, and the sensing member is connected to the first driving portion.

[0011] Optionally, the first driving part comprises multiple layers of water-swellable paper stacked in sequence, and the multiple layers of water-swellable paper can absorb liquid and swell to provide a driving force for the blocking member to move in a direction away from the valve body.

[0012] Optionally, the sensing member includes a pressure sensor, the pressure sensor is connected between multiple layers of the water-absorbing and swelling paper, and / or the pressure sensor is respectively connected to the end of the multiple layers of water-absorbing and swelling paper and the plugging member, and / or the pressure sensor is respectively connected to the end of the multiple layers of water-absorbing and swelling paper and the valve body, so as to detect the driving force of the first driving portion.

[0013] Optionally, the sensing member includes a tension sensor, the tension sensor is respectively connected to the outer peripheral wall of the multiple layers of water-absorbing and swelling paper and the valve body, and / or the tension sensor is respectively connected to the outer peripheral wall of the multiple layers of water-absorbing and swelling paper and the plugging member.

[0014] Optionally, the sensing member includes a tension sensor, the tension sensor is connected to the end of the multiple layers of water-absorbing and swelling paper, and / or the tension sensor is connected between multiple layers of the water-absorbing and swelling paper, and / or the tension sensor is connected to the outer peripheral wall of the multiple layers of water-absorbing and swelling paper.

[0015] Optionally, the driving member includes a second driving portion, the second driving portion is connected between the valve body and the plugging member to provide a driving force for the plugging member to move towards the valve body, so as to close the channel, and the sensing member is connected to the second driving portion.

[0016] Optionally, the second driving portion includes a fixing spring, the sensing member includes a tension sensor, and the fixing spring is respectively connected to the valve body and the plugging member.

[0017] Wherein, the tension sensor is arranged on the fixing spring, and / or the fixing spring and the valve body are connected through the tension sensor, and / or the fixing spring and the plugging member are connected through the tension sensor.

[0018] According to a second aspect of the present disclosure, there is provided a battery pack, including a housing and the control valve as described above, and the base body is the housing.

[0019] According to a third aspect of the present disclosure, there is provided a vehicle, including a controller and the battery pack as described above, and the controller is signal-connected to the sensing member and the warning structure.

[0020] Through the above technical solution, that is, by driving the plugging member to move through the driving member, the channel can be opened or closed, and the sensing member monitors the opening or closing of the channel by detecting the driving force of the driving member, such as detecting the value and / or change value of the driving force. Therefore, the sensing member can be used to monitor and give early warning of the opening and closing conditions of the control valve, so as to timely understand the opening and closing state of the control valve and improve the use safety of the whole where the control valve and the base body are located.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. Brief Description of the Drawings

[0022] The 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 to the present disclosure. In the drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of the control valve provided in the exemplary embodiment of the present disclosure;

[0024] Figure 2 is an exploded schematic diagram of the control valve provided in the exemplary embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of the structure where the sensing member is connected between multiple layers of water-absorbing and swelling paper;

[0026] Figure 4 is a schematic diagram of the structure where the sensing member is connected to the outer peripheral wall of multiple layers of water-absorbing and swelling paper;

[0027] Figure 5 is a schematic diagram of the overall structure of the battery pack provided in the exemplary embodiment of the present disclosure;

[0028] Figure 6 is an exploded schematic diagram of the battery pack provided in the exemplary embodiment of the present disclosure.

[0029] Description of the Reference Numerals

[0030] 1. Valve body; 11. Channel; 12. First valve body; 121. Limiting portion; 13. Second valve body; 2. Sealing member; 3. Driving member; 31. First driving portion; 311. Water-absorbing and swelling paper; 32. Second driving portion; 321. Fixed spring; 4. Sensing member; 41. Pressure sensor; 42. Tension sensor; 5. Battery pack; 51. Housing; 511. Bottom plate. Detailed Description of the Embodiments

[0031] The following will describe in detail the specific embodiments of the present disclosure with reference to the drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0032] In the present disclosure, unless otherwise stated, "inner" and "outer" refer to the inside and outside of the contour of the corresponding component; "far" and "near" refer to the relative spatial position of the corresponding component with respect to another component. In addition, the terms "first", "second", etc. used in the present disclosure are for distinguishing one element from another, and do not have an order or importance. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements.

[0033] The control valve, battery pack, and vehicle in the exemplary embodiments of the present disclosure will be described below with reference to the drawings.

[0034] According to a first aspect of the present disclosure, with reference to Figures 1 to 4 , the present disclosure relates to a control valve, a battery pack 5, and a vehicle. The control valve is for installation on a base body. The control valve includes a valve body 1, a plugging member 2, a driving member 3, and a sensing member 4. The valve body 1 has a channel 11 for communicating the inside and outside of the base body; the plugging member 2 is movable relative to the valve body 1 to open or close the channel 11; the driving member 3 is for driving the plugging member 2 to move; the sensing member 4 is connected to the driving member 3, and the sensing member 4 can detect the driving force of the driving member 3 for monitoring the opening and closing of the channel 11.

[0035] Through the above technical solution, that is, by driving the plugging member 2 to move by the driving member 3, the channel 11 can be opened or closed. The sensing member 4 monitors the opening or closing of the channel 11 by detecting the driving force of the driving member 3, such as detecting the value and / or change value of the driving force. Therefore, the sensing member 4 can be used to monitor and give early warning of the opening and closing conditions of the control valve, so as to timely understand the opening and closing state of the control valve and improve the overall use safety of the control valve and the base body.

[0036] Exemplarily, when the driving member 3 drives the plugging member 2 to move away from the valve body 1 to open the channel 11, at this time, the driving force provided by the driving member 3 is greater than the holding force for closing the control valve, and the inside and outside of the base body are communicated. The sensing member 4 can monitor the opening of the channel 11 by detecting the driving force of the driving member 3. When the driving member 3 drives the plugging member 2 to move towards the valve body 1 to close the channel 11, the inside and outside of the base body are closed. At this time, the sensing member 4 can monitor the closing of the channel 11 by detecting the driving force of the driving member 3.

[0037] In an exemplary application scenario, the control valve can be configured as a drain valve, and the drain valve can be used on the battery pack 5. The battery pack 5 has a housing 51, and the above-mentioned base body can be the housing 51. The drain valve can be installed on the housing 51 of the battery pack 5. At this time, the drain valve can discharge the condensed water generated inside the battery pack 5 or the coolant that leaks accidentally through the channel 11 to the outside of the battery pack 5. Thus, by arranging the sensing member 4, the opening and closing condition of the drain valve can be monitored to ensure the safety of the battery pack 5 and the vehicle.

[0038] Reference Figure 1 and Figure 2 , the valve body 1 can include a first valve body 12 and a second valve body 13. The first valve body has a limiting portion 121. The second valve body 13 is sleeved on the first valve body 12. The second valve body 13 and the limiting portion 121 are used to clamp the bottom wall of the housing 51 so as to be able to install the drain valve on the housing 51 of the battery pack 5. Among them, the second valve body 13 can be connected to the first valve body 12 by means of, for example, threaded connection, and the present disclosure does not make specific limitations on this.

[0039] In addition, the drain valve further includes a driving member 3 connected between the first valve body 12 and the plugging member 2. The driving member 3 can include an expansion portion and an elastic portion. The second valve body 13 is located inside the battery pack 5, and a part of the limiting portion 121 is located outside the battery pack 5. The first valve body 12 penetrates the bottom wall of the housing 51 of the battery pack 5 so that the liquid inlet of the channel 11 is located inside the battery pack 5. In this way, after the liquid leaks inside the battery pack 5 and flows through the bottom wall of the housing 51 of the battery pack 5, it then flows into the channel 11 through the liquid inlet. The expansion portion absorbs liquid and expands to drive the plugging member 2 to move away from the first valve body 12 to open the channel 11. Therefore, the liquid can be discharged from inside the battery pack 5 to the outside of the battery pack 5 through the channel 11. After the drainage is completed, the elastic portion drives the plugging member 2 to move towards the first valve body 12 to close the channel 11.

[0040] It can be understood that in the above application scenario, when the expansion portion absorbs liquid and expands to drive the plugging member 2 to move away from the first valve body 12 to open the channel 11, at this time, the inside and outside of the battery pack 5 are connected. The sensing member 4 can monitor the opening of the channel 11 by detecting the driving force of the expansion portion acting on the plugging member 2. Therefore, at this time, the sensing member 4 can warn the driver that the battery pack 5 is in a state of seal failure, reducing the possibility that the liquid outside the battery pack 5 pours into the inside of the battery pack 5 when the driver drives the vehicle, such as when driving in rainy weather or wading through water, causing thermal runaway inside the battery pack 5, and improving the use safety of the battery pack 5.

[0041] Next, taking the control valve configured as a drain valve and installed on the battery pack 5 as an example, other structures of the control valve will be described.

[0042] In some embodiments, referenceFigure 2 The driving member 3 may include a first driving portion 31, and the first driving portion 31 is configured to drive the plugging member 2 to move away from the valve body 1 to open the passage 11. The sensing member 4 is connected to the first driving portion 31. In this way, the sensing member 4 can monitor the opening and closing of the passage 11 by detecting the driving force for driving the movement of the plugging member 2 by the first driving portion 31, and thus can warn the driver that the battery pack 5 is in a state of seal failure at this time, reducing the possibility that the liquid outside the battery pack 5 pours into the inside of the battery pack 5 when the driver drives the vehicle in rainy weather or wading without knowing it, causing thermal runaway inside the battery pack 5, and improving the use safety of the battery pack 5.

[0043] The first driving portion 31 may be constructed in any suitable manner. In some embodiments, with reference to Figures 2 to 4 , the first driving portion 31 may include multiple layers of water-absorbing and expanding paper 311 stacked in sequence. The multiple layers of water-absorbing and expanding paper 311 can absorb liquid and expand to provide a driving force for the plugging member 2 to move away from the valve body 1. Exemplarily, the multiple layers of water-absorbing and expanding paper 311 may be disposed in the passage 11 and between the valve body 1 and the plugging member 2. In this way, when condensate or coolant leaks accidentally inside the battery pack 5, the water-absorbing and expanding paper 311 can absorb liquid and expand to drive the plugging member 2 to move away from the valve body 1 to open the passage 11, so as to discharge the condensate or coolant and reduce the possibility that this part of the liquid stays inside the battery pack 5 and causes thermal runaway of the battery pack 5, improving the use safety of the battery pack 5. At this time, the sensing member 4 can detect the driving force of the water-absorbing and expanding paper 311 acting on the plugging member 2, and thus can warn the driver.

[0044] In some other possible alternative embodiments not shown in the drawings, the first driving portion 31 may include a cylinder or an electric push rod, etc. In this way, a liquid level sensor may be installed inside the battery pack 5, and a controller is provided and signal-connected to the liquid level sensor. The controller is used to control the actions of the cylinder or the electric push rod. When condensate or coolant leaks accidentally inside the battery pack 5, after the liquid level sensor detects that the height of this part of the liquid exceeds the set height, a signal is transmitted to the controller, and the controller controls the cylinder or the electric push rod to act on the plugging member 2 to drive the plugging member 2 to move away from the valve body 1 to open the passage 11, so as to discharge this part of the liquid. At this time, the sensing member 4 can detect the driving force of the cylinder or the electric push rod acting on the plugging member 2, and thus can judge whether the cylinder or the electric push rod acts, that is, can judge whether it is in the state of opening or closing the control valve, so as to avoid situations such as the cylinder or the electric push rod malfunctioning and not opening the control valve in time, or mis-opening or mis-closing the control valve, etc., and thus can ensure the safety of, for example, the battery pack and the vehicle.

[0045] It is understandable that the first driving part 31 may also include other structures capable of driving the plugging member 2 to move, and the present disclosure is not limited thereto.

[0046] The sensing member 4 can be constructed in any suitable manner. In some embodiments, referring to Figure 3 , the sensing member 4 may include a pressure sensor 41. The pressure sensor 41 can be connected between the multi-layer water-absorbing and swelling paper 311. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 can absorb the liquid and swell to provide a driving force for the plugging member 2 to move away from the valve body 1. It is understandable that there is a mutual extrusion force between the multi-layer water-absorbing and swelling paper 311 at this time. Therefore, the pressure sensor 41 can monitor the opening and closing of the channel 11 by detecting the force between the water-absorbing and swelling paper 311.

[0047] In some other possible alternative embodiments not shown in the drawings, the pressure sensor 41 can be respectively connected to the end of the multi-layer water-absorbing and swelling paper 311 and the plugging member 2. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 can absorb the liquid and swell to provide a driving force for the plugging member 2 to move away from the valve body 1. It is understandable that during this process, the water-absorbing and swelling paper 311 expands and acts on the pressure sensor 41, and through the pressure sensor 41, it acts on the plugging member 2. Therefore, the pressure sensor 41 can monitor the opening and closing of the channel 11 by detecting the driving force of the water-absorbing and swelling paper 311 at this time.

[0048] In some other possible alternative embodiments not shown in the drawings, the pressure sensor 41 can be respectively connected to the end of the multi-layer water-absorbing and swelling paper 311 and the valve body 1. Specifically, the pressure sensor 41 can be respectively connected to the end of the multi-layer water-absorbing and swelling paper 311 and the first valve body, wherein the first valve body is connected to the battery pack 5 through the limiting part and the socket connection with the second valve body. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 can absorb the liquid and swell to provide a driving force for the plugging member 2 to move away from the valve body 1. It is understandable that during this process, the water-absorbing and swelling paper 311 simultaneously exerts a squeezing effect on the first valve body. Therefore, at this time, the driving force of the water-absorbing and swelling paper 311 can be detected by the pressure sensor 41 to monitor the opening and closing of the channel 11.

[0049] It should be noted that the above embodiments can be used alone or in combination. In addition, the number of the pressure sensors 41 can be set to one or multiple, and the present disclosure does not make specific limitations thereto.

[0050] In some embodiments, the sensing member 4 may include a tensile force sensor 42, and the tensile force sensor 42 may be connected to the end of the multi-layer water-absorbing and swelling paper 311. Among them, the tensile force sensor 42 includes an elastomer and a resistance strain gauge. In this way, when condensate or coolant leaks accidentally inside the battery pack 5, the direction of the liquid absorption and swelling of the water-absorbing and swelling paper 311 may not be unique, that is, the water-absorbing and swelling paper 311 can absorb liquid and expand along the stacking direction to provide a driving force for the sealing member 2 to move away from the valve body 1. At this time, the water-absorbing and swelling paper 311 may also expand in other directions. For example, the radial dimension of the water-absorbing and swelling paper 311 may also increase. Therefore, in the case where the water-absorbing and swelling paper 311 can also expand radially, the tensile force sensor 42 may be connected to the end of the multi-layer water-absorbing and swelling paper 311. Thus, when the water-absorbing and swelling paper 311 expands, the elastomer and the resistance strain gauge of the tensile force sensor 42 can elastically deform as the size of the water-absorbing and swelling paper 311 increases. Furthermore, the tensile force sensor 42 can detect the driving force of the water-absorbing and swelling paper 311 to monitor the opening and closing of the channel 11.

[0051] It can be understood that the above-mentioned end is the end of the multi-layer water-absorbing and swelling paper 311 as a whole, that is, the end of the multi-layer water-absorbing and swelling paper 311 close to the valve body 1, or the end of the multi-layer water-absorbing and swelling paper 311 close to the sealing member 2. In some other possible alternative embodiments, the tensile force sensor 42 may also be connected between the multi-layer water-absorbing and swelling papers 311. At this time, the tensile force sensor 42 may be connected to the end of any water-absorbing and swelling paper 311 so that the elastomer and the resistance strain gauge can elastically deform as the size of the water-absorbing and swelling paper 311 increases. Furthermore, the tensile force sensor 42 can detect the driving force of the water-absorbing and swelling paper 311 to monitor the opening and closing of the channel 11.

[0052] It should be noted that in the above-mentioned embodiment, the elastic deformation directions of the elastomer and the resistance strain gauge of the tensile force sensor 42 are parallel to the radial direction of the water-absorbing and swelling paper 311. Therefore, the driving force of the water-absorbing and swelling paper 311 detected by the tensile force sensor 42 at this time is along its own radial direction, rather than the driving force of the water-absorbing and swelling paper 311 directly acting on the sealing member 2 away from the valve body 1. However, a state curve between the radial driving force of the water-absorbing and swelling paper 311 and the opening and closing of the channel 11 can be established through preliminary experiments, that is, when the radial driving force of the water-absorbing and swelling paper 311 reaches a certain value or force value range, the channel 11 changes to the open state, so that the tensile force sensor 42 can monitor the opening and closing of the channel 11 by detecting the radial driving force of the water-absorbing and swelling paper 311.

[0053] In some embodiments, referring to Figure 4, the tensile sensor 42 can be connected to the outer peripheral wall of the multi-layer water-absorbing and swelling paper 311. Exemplarily, at this time, the arrangement direction of the tensile sensor 42 is parallel to the stacking direction of the multi-layer water-absorbing and swelling paper 311. In this way, when condensed water or coolant accidentally leaks inside the battery pack 5, the water-absorbing and swelling paper 311 absorbs the liquid and swells to provide a driving force for the plugging member 2 to move away from the valve body 1. At this time, the elastic deformation directions of the elastic body and the resistance strain gauge are parallel to the axial direction of the water-absorbing and swelling paper 311. The elastic body and the resistance strain gauge can undergo elastic deformation as the size of the water-absorbing and swelling paper 311 increases. Furthermore, the tensile sensor 42 can detect the driving force of the water-absorbing and swelling paper 311 to monitor the opening and closing of the channel 11.

[0054] It can be understood that the above-described embodiments are exemplary preferred embodiments. In some other possible alternative embodiments, the arrangement direction of the tensile sensor 42 can be deviated from the stacking direction of the multi-layer water-absorbing and swelling paper 311, that is, the axial deformation direction of the water-absorbing and swelling paper 311, or the radial deformation direction of the water-absorbing and swelling paper 311. The elastic body and the resistance strain gauge can also undergo elastic deformation as the size of the water-absorbing and swelling paper 311 increases. Only the direction of the detected driving force is different. At this time, a state curve between the radial driving force of the water-absorbing and swelling paper 311 and the opening and closing of the channel 11 can also be established through experiments. The present disclosure is not limited thereto.

[0055] In some other possible alternative embodiments not shown in the drawings, the tensile sensor 42 can be respectively connected to the outer peripheral wall of the multi-layer water-absorbing and swelling paper 311 and the valve body 1. In this way, when condensed water or coolant accidentally leaks inside the battery pack 5, the water-absorbing and swelling paper 311 absorbs the liquid and swells to provide a driving force for the plugging member 2 to move away from the valve body 1. At this time, the distance between the end of the tensile sensor 42 connected to the outer wall of the water-absorbing and swelling paper 311 and the valve body 1 increases. Therefore, the elastic body and the resistance strain gauge undergo elastic deformation. Furthermore, the tensile sensor 42 can detect the driving force of the water-absorbing and swelling paper 311 to monitor the opening and closing of the channel 11.

[0056] It can be understood that the tensile sensor 42 is also respectively connected to the outer peripheral wall of the multi-layer water-absorbing and swelling paper 311 and the plugging member 2. In this way, when condensed water or coolant accidentally leaks inside the battery pack 5, the water-absorbing and swelling paper 311 absorbs the liquid and swells to provide a driving force for the plugging member 2 to move away from the valve body 1. At this time, the distance between the end of the tensile sensor 42 connected to the outer wall of the water-absorbing and swelling paper 311 and the plugging member 2 increases. Therefore, the elastic body and the resistance strain gauge undergo elastic deformation. Furthermore, the tensile sensor 42 can detect the driving force of the water-absorbing and swelling paper 311 to monitor the opening and closing of the channel 11.

[0057] It should be noted that the above embodiments can be used alone or in various combinations. In addition, the number of the tension sensors 42 can be set to one or multiple, and the present disclosure does not make specific limitations thereon.

[0058] In some embodiments, referring to Figure 2 , the driving member 3 may include a second driving portion 32. The second driving portion 32 is connected between the valve body 1 and the plugging member 2 to provide a driving force for the plugging member 2 to tend towards the valve body 1, so as to close the channel 11. The sensing member 4 is connected to the second driving portion 32. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 swells after absorbing liquid to provide a driving force for the plugging member 2 to move away from the valve body 1. For the sake of easy understanding, this driving force is set as the first driving force, and the driving force provided by the second driving portion 32 for the plugging member 2 to tend towards the valve body 1 is set as the second driving force. At this time, the first driving force is greater than the second driving force. Therefore, the plugging member 2 moves in the direction away from the valve body 1 to open the channel 11, and the sensing member 4 monitors the opening and closing of the channel 11 by detecting the change of the second driving force.

[0059] In some embodiments, referring to Figure 2 , the second driving portion 32 may include a fixing spring 321, and the sensing member 4 may include a tension sensor 42. The fixing spring 321 is respectively connected to the valve body 1 and the plugging member 2, and the tension sensor 42 may be arranged on the fixing spring 321. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 swells after absorbing liquid. At this time, the first driving force is greater than the second driving force. Therefore, the plugging member 2 moves in the direction away from the valve body 1, and the fixing spring 321 is stretched and deformed as the plugging member 2 moves. The elastic body and the resistance strain gauge undergo elastic deformation, and the tension sensor 42 monitors the opening and closing of the channel 11 by detecting the change of the second driving force.

[0060] In some other possible alternative embodiments, the fixing spring 321 and the valve body 1 are connected through the tension sensor 42. In this way, when condensed water or coolant leaks accidentally inside the battery pack 5, the water-absorbing and swelling paper 311 swells after absorbing liquid. At this time, the first driving force is greater than the second driving force. Therefore, the plugging member 2 moves in the direction away from the valve body 1, and the fixing spring 321 is stretched and deformed as the plugging member 2 moves. Therefore, at this time, the distance between one end of the tension sensor 42 connected to the fixing spring 321 and the valve body 1 changes, and the elastic body and the resistance strain gauge undergo elastic deformation. Further, the tension sensor 42 monitors the opening and closing of the channel 11 by detecting the change of the second driving force.

[0061] In some other possible alternative embodiments, the fixing spring 321 and the plugging member 2 are connected by a tension sensor 42. In this way, when condensate or coolant accidentally leaks inside the battery pack 5, the water-absorbing and swelling paper 311 absorbs liquid and swells. At this time, the first driving force is greater than the second driving force. Therefore, the plugging member 2 moves away from the valve body 1, and the fixing spring 321 is stretched and deformed as the plugging member 2 moves. Therefore, at this time, the distance between one end of the tension sensor 42 connected to the fixing spring 321 and the plugging member 2 changes, and the elastic body and the resistance strain gauge undergo elastic deformation. Furthermore, the tension sensor 42 monitors the opening and closing of the channel 11 by detecting the change in the second driving force.

[0062] It should be noted that the above embodiments can be used alone or in combination. In addition, the number of tension sensors 42 can be set to one or multiple, and the present disclosure does not make specific limitations in this regard.

[0063] It can be understood that the above embodiments provided with the pressure sensor 41 and the tension sensor 42 in the present disclosure can be used alone or in combination. In addition, the number of tension sensors 42 and pressure sensors 41 can both be set to one or multiple, and the present disclosure is not limited thereto.

[0064] According to a second aspect of the present disclosure, referring to Figure 5 and Figure 6 , the present disclosure provides a battery pack 5, which may include a housing 51 and the control valve as described above. Among them, the mentioned base body may be the housing 51. Specifically, the control valve may be disposed on the bottom plate 511 of the housing 51. In this way, the control valve can be used to timely discharge the liquid inside the battery pack 5 after condensate or coolant accidentally leaks. The number of control valves can be set to multiple. If the coolant accidentally leaks inside the battery pack 5, the coolant can be timely discharged through at least one control valve to meet the safety use requirements, reduce the possibility of short-circuit thermal runaway inside the battery pack 5 affected by the coolant, and improve the use safety of the battery pack 5.

[0065] According to a third aspect of the present disclosure, a vehicle is provided, including a controller and the battery pack 5 as described above. The controller is signal-connected to the sensing member 4 and the warning structure. In this way, when the sensing member 4 monitors that the passage 11 is opened, it can transmit a signal to the controller. At this time, the controller can transmit a signal to the warning structure, and the warning structure can be the instrument panel of the vehicle. For example, the controller can transmit a signal to the instrument panel of the vehicle to remind the driver that the battery pack 5 is in a state of seal failure at this time. In this embodiment, the controller can be, for example, a vehicle controller or a domain controller, etc. Alternatively, the warning structure can be the vehicle controller of the vehicle. The controller can be signal-connected to the vehicle controller, and the vehicle controller brakes the vehicle so that the vehicle cannot start, ensuring the use safety. In this embodiment, the controller can be, for example, a single-chip microcomputer, a PLC or a domain controller, etc. The present disclosure does not make specific limitations on this.

[0066] In addition, the vehicle has all the beneficial effects of the above-mentioned battery pack 5. Among them, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The embodiments of the present application do not make special restrictions on the above-mentioned vehicles.

[0067] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of 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 belong to the protection scope of the present disclosure.

[0068] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable manner. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0069] In addition, any combination can be made between various different embodiments of the present disclosure, as long as it does not violate the idea of the present disclosure, it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A control valve, for installation on a substrate, characterized in that: The control valve comprises: A valve body, wherein the valve body has a channel, and the channel is used to communicate the inside and the outside of the base; A blocking member capable of moving relative to the valve body to open or close the passage; a driving member, used for driving the blocking member to move; and The sensing member is connected to the driving member, and the sensing member can detect the driving force of the driving member to monitor the opening and closing of the channel.

2. The control valve according to claim 1, characterized in that: The driving member includes a first driving part, the first driving part is used to drive the blocking member to move in a direction away from the valve body to open the channel, and the sensing member is connected to the first driving part.

3. The control valve according to claim 2, characterized in that: The first driving part includes multiple layers of water-swellable paper stacked in sequence, and the multiple layers of water-swellable paper can absorb liquid and swell to provide a driving force for the blocking member to move in a direction away from the valve body.

4. The control valve according to claim 3, characterized in that: The sensing element includes a pressure sensor, which is connected between the multiple layers of water-swellable paper, and / or the pressure sensor is respectively connected to the ends of the multiple layers of water-swellable paper and the blocking member, and / or the pressure sensor is respectively connected to the ends of the multiple layers of water-swellable paper and the valve body, so as to detect the driving force of the first driving part.

5. The control valve according to claim 3, characterized in that: The sensing element comprises a tension sensor, which is respectively connected to the outer peripheral wall of the multi-layer water-swellable paper and the valve body, and / or the tension sensor is respectively connected to the outer peripheral wall of the multi-layer water-swellable paper and the blocking element.

6. The control valve according to claim 3, characterized in that: The sensing element includes a tension sensor, which is connected to the end of the multi-layer water-swellable paper, and / or is connected between the multi-layer water-swellable paper, and / or is connected to the outer peripheral wall of the multi-layer water-swellable paper.

7. The control valve according to any one of claims 1 to 6, characterized in that: The driving member includes a second driving part, which is connected between the valve body and the blocking member to provide a driving force for the blocking member to move toward the valve body to close the channel, and the sensing member is connected to the second driving part.

8. The control valve according to claim 7, characterized in that: The second driving part includes a fixed spring, the sensing element includes a tension sensor, and the fixed spring is connected to the valve body and the blocking element respectively. Wherein, the tension sensor is arranged on the fixed spring, and / or the fixed spring and the valve body are connected via the tension sensor, and / or the fixed spring and the blocking member are connected via the tension sensor.

9. A battery pack, characterized in that: It comprises a housing and the control valve according to any one of claims 1 to 8, wherein the substrate is the housing.

10. A vehicle, characterized in that: It comprises a controller and the battery pack as claimed in claim 9, wherein the controller signal connects the sensing element and the early warning structure.

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