Vehicle oxygen supply device, vehicle and control method of vehicle oxygen supply device

Abstract

The present disclosure provides an in-vehicle oxygen supply device, a vehicle, and a control method for the in-vehicle oxygen supply device, belonging to the technical field of automotive accessories. The in-vehicle oxygen supply device includes a control unit, an oxygen concentration sensor, an oxygen generation unit, a CO2 transmission pipeline, an O2 transmission pipeline, and a breathing mask. The oxygen generation unit includes a material chamber, a reaction chamber, and a reaction control device located between the material chamber and the reaction chamber. Na2O2 is contained in the material chamber. The control unit controls the reaction control device to adjust the connection opening degree between the material chamber and the reaction chamber according to the oxygen concentration in the vehicle. When the oxygen concentration in the vehicle is low, the reaction control device connects the material chamber and the reaction chamber, enabling CO2 to react with Na2O2 to generate O2, and the lower the oxygen concentration, the larger the connection opening degree. In this way, it can not only ensure that O2 can be generated in the reaction chamber when the oxygen concentration is low, but also ensure that Na2O2 is not consumed when the oxygen concentration is high. In addition, Na2O2 is a solid, which is easy to store in the oxygen generation unit and occupies a relatively small volume.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automotive parts, and particularly relates to an in-vehicle oxygen supply device, a vehicle, and a control method for the in-vehicle oxygen supply device. Background Art

[0002] When a vehicle is in a closed environment for a long time, the oxygen inside the carriage will gradually decrease, which seriously affects the safety of the passengers in the carriage. Therefore, it is necessary to set up an in-vehicle oxygen supply device to supply oxygen to the carriage to ensure that there is sufficient oxygen inside the carriage.

[0003] In the related art, the in-vehicle oxygen supply device stores gaseous oxygen or liquid oxygen. When the oxygen concentration in the carriage is low, the oxygen in the in-vehicle oxygen supply device is released into the carriage.

[0004] However, the cost of storing gaseous oxygen or liquid oxygen in the related in-vehicle oxygen supply device is relatively high, and it occupies a large space, making it difficult to store more oxygen in a limited space. Summary of the Invention

[0005] The present disclosure provides an in-vehicle oxygen supply device, a vehicle, and a control method for the in-vehicle oxygen supply device, which can solve the technical problems existing in the related art. The technical solutions of the in-vehicle oxygen supply device, the vehicle, and the control method for the in-vehicle oxygen supply device are as follows:

[0006] In a first aspect, the present disclosure provides an in-vehicle oxygen supply device, which includes a control unit, an oxygen concentration sensor, an oxygen generation unit, a CO2 transmission pipeline, an O2 transmission pipeline, and a breathing mask;

[0007] The oxygen generation unit includes a material chamber, a reaction chamber, and a reaction control device. Na2O2 is provided in the material chamber, and the reaction control device is located between the material chamber and the reaction chamber and is used to control the opening degree of the connection between the material chamber and the reaction chamber;

[0008] Both ends of the CO2 transmission pipeline are respectively connected to the reaction chamber and the breathing mask, and the CO2 transmission pipeline is used to transmit the CO2 generated by the occupant at the breathing mask to the reaction chamber;

[0009] Both ends of the O2 transmission pipeline are respectively connected to the reaction chamber and the breathing mask, and the O2 transmission pipeline is used to transmit the O2 generated by the reaction chamber to the breathing mask;

[0010] The control unit is configured to control the reaction control device to adjust the communication opening degree between the material chamber and the reaction chamber based on the oxygen concentration in the vehicle detected by the oxygen concentration sensor. When the material chamber and the reaction chamber are in communication, CO2 in the reaction chamber reacts with Na2O2 in the material chamber to generate O2.

[0011] In a possible implementation manner, when the oxygen concentration in the vehicle is less than the first target concentration threshold, the control unit controls the reaction control device to communicate the material chamber and the reaction chamber.

[0012] When the oxygen concentration in the vehicle is greater than the second target concentration threshold and less than the first target concentration threshold, the smaller the oxygen concentration in the vehicle, the larger the communication opening degree between the material chamber and the reaction chamber.

[0013] When the oxygen concentration in the vehicle is less than the second target concentration threshold, the communication opening degree between the material chamber and the reaction chamber reaches the maximum.

[0014] When the oxygen concentration threshold in the vehicle is greater than the first target concentration threshold, the control unit controls the reaction control device to separate the material chamber and the reaction chamber.

[0015] In a possible implementation manner, the reaction control device includes a first control board, a second control board, and a driving member.

[0016] The first control board has a first hole, and the second control board has a second hole. The material chamber and the reaction chamber are in communication through the overlapping part between the first hole and the second hole.

[0017] The driving member is used to drive the first control board and / or the second control board to translate, so as to adjust the size of the overlapping part between the first hole and the second hole.

[0018] In a possible implementation manner, the driving member includes a motor and a gear, and the motor is in transmission connection with the gear.

[0019] At least one of the first control board and the second control board has a rack, and the rack meshes with the gear.

[0020] In a possible implementation manner, the oxygen generation unit further includes a temperature control device and a heat dissipation device. At least a part of the temperature control device is fixed inside the reaction chamber, and the heat dissipation device is fixed outside the reaction chamber.

[0021] The control unit is configured to control the heat dissipation device to turn on when the temperature in the reaction chamber detected by the temperature control device is higher than the target temperature threshold.

[0022] When the temperature detected by the temperature control device is lower than the target temperature threshold, the heat dissipation device is controlled to turn off.

[0023] In a possible implementation, the oxygen generation unit further includes a pressure relief valve, and the pressure relief valve is used to communicate the inside and outside of the reaction chamber when the pressure inside the reaction chamber is greater than the target pressure threshold.

[0024] In a possible implementation, the pressure relief valve is fixed outside the reaction chamber, and when the pressure inside the reaction chamber is greater than the target pressure threshold, the pressure relief valve opens.

[0025] In a possible implementation, the O2 transmission pipeline includes a first one-way valve and a filter;

[0026] The filter is located between the reaction chamber and the first one-way valve.

[0027] In a possible implementation, the CO2 transmission pipeline includes a second one-way valve and a humidifier.

[0028] In a second aspect, the present disclosure further provides a vehicle, and the vehicle includes the on-vehicle oxygen supply device according to any one of the first aspect of the claims.

[0029] In a third aspect, the present disclosure further provides a control method for an on-vehicle oxygen supply device, and the control method is applied to the control unit of the on-vehicle oxygen supply device according to any one of the first aspect, and the control method includes:

[0030] Obtain the concentration of oxygen in the vehicle detected by the oxygen concentration sensor;

[0031] Based on the concentration of oxygen in the vehicle detected by the oxygen concentration sensor, control the reaction control device to adjust the communication opening degree between the material chamber and the reaction chamber.

[0032] In a possible implementation, when the reaction control device includes a first control board, a second control board and a driving member, and the first control board has a first hole and the second control board has a second hole, controlling the reaction control device to adjust the communication opening degree between the material chamber and the reaction chamber includes:

[0033] The driving member drives the first control board and / or the second control board to translate, and adjusts the size of the overlapping part between the first hole and the second hole.

[0034] In a possible implementation, when the oxygen generation unit further includes a temperature control device and a heat dissipation device, the control method further includes:

[0035] When the temperature detected by the temperature control device is higher than the target temperature threshold, control the heat dissipation device to turn on;

[0036] When the temperature detected by the temperature control device is lower than the target temperature threshold, control the heat dissipation device to turn off.

[0037] The technical solution provided by the present disclosure at least includes the following beneficial effects:

[0038] The present disclosure provides an in-vehicle oxygen supply device. Na2O2 in the oxygen generation unit of the in-vehicle oxygen supply device can generate oxygen. After the passenger wears the breathing mask, the exhaled CO2 enters the reaction chamber through the CO2 transmission pipeline. CO2 reacts chemically with Na2O2 in the reaction chamber and generates O2. The O2 generated in the reaction chamber enters the breathing mask through the O2 transmission pipeline. When the passenger inhales, they will inhale O2, thus avoiding hypoxia. Since the oxygen stored in the oxygen supply device is not gaseous oxygen or liquid oxygen, but Na2O2 that can generate O2. Na2O2 is a solid, so it is easier to store and occupies a smaller volume, enabling the oxygen supply device to provide more oxygen in a limited space. In addition, the control unit controls the reaction control device to adjust the connection opening between the material chamber and the reaction chamber according to the oxygen concentration in the vehicle. When the oxygen concentration in the vehicle is low, the reaction control device connects the material chamber and the reaction chamber. And the lower the oxygen concentration, the larger the connection opening between the material chamber and the reaction chamber, so as to accurately control the reaction rate of CO2 and Na2O2. In this way, it can ensure that the oxygen generation unit can generate O2 when the oxygen concentration is low, and it can also ensure that Na2O2 is not consumed when the oxygen concentration is high.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure. In the drawings:

[0041] Figure 1 is a schematic structural diagram of an in-vehicle oxygen supply device shown in an embodiment of the present disclosure;

[0042] Figure 2 is a schematic structural diagram of an oxygen generation unit shown in an embodiment of the present disclosure;

[0043] Figure 3 is a schematic structural diagram of an in-vehicle oxygen supply device shown in an embodiment of the present disclosure;

[0044] Figure 4 is a schematic structural diagram of a reaction control device shown in an embodiment of the present disclosure;

[0045] Figure 5 It is a schematic structural diagram of a reaction control device shown in an embodiment of the present disclosure;

[0046] Figure 6 It is a schematic structural diagram of a reaction control device shown in an embodiment of the present disclosure;

[0047] Figure 7 It is a schematic structural diagram of a reaction control device shown in an embodiment of the present disclosure;

[0048] Figure 8 It is a flowchart of a control method for an on-vehicle oxygen supply device shown in an embodiment of the present disclosure;

[0049] Figure 9 It is a control logic diagram of the opening degree between a material chamber and a reaction chamber shown in an embodiment of the present disclosure;

[0050] Figure 10 It is a reaction chamber temperature control logic diagram shown in an embodiment of the present disclosure.

[0051] Legend description:

[0052] 100. Power supply;

[0053] 1. Control unit;

[0054] 2. Oxygen concentration sensor;

[0055] 3. Oxygen generation unit, 31. Material chamber, 32. Reaction chamber, 33. Reaction control device, 331. First control board, 331a. First hole, 3311. Rack, 332. Second control board, 332a. Second hole, 333. Driving member, 3331. Motor, 3332. Gear, 34. Temperature control device, 341. Constant current control circuit, 342. A / D analog-to-digital conversion circuit, 35. Heat dissipation device, 36. Pressure relief valve;

[0056] 4. CO2 transmission pipeline, 41. Second one-way valve, 42. Humidifier;

[0057] 5. O2 transmission pipeline, 51. First one-way valve, 52. Filter;

[0058] 6. Respiratory mask.

[0059] Through the above-mentioned drawings, specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0060] To make the objectives, technical solutions, and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0061] The terms used in the embodiments of the present disclosure are only for explaining the embodiments of the present disclosure and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", "third", and similar terms used in the specification and claims of the present patent application do not indicate any order, quantity, or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not indicate a quantity limitation, but mean that there is at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "coupled" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0062] The present disclosure provides a vehicle-mounted oxygen supply device, as Figure 1 shown. The vehicle-mounted oxygen supply device includes a control unit 1, an oxygen concentration sensor 2, an oxygen generation unit 3, a CO2 transmission pipeline 4, an O2 transmission pipeline 5, and a breathing mask 6. As Figure 2 shown, the oxygen generation unit 3 includes a material chamber 31, a reaction chamber 32, and a reaction control device 33. Na2O2 is provided in the material chamber 31, and the reaction control device 33 is located between the material chamber 31 and the reaction chamber 32 and is used to control the opening degree of the connection between the material chamber 31 and the reaction chamber 32. The two ends of the CO2 transmission pipeline 4 are respectively connected to the reaction chamber 32 and the breathing mask 6, and the CO2 transmission pipeline 4 is used to transmit the CO2 generated by the occupant at the breathing mask 6 to the reaction chamber 32. The two ends of the O2 transmission pipeline 5 are respectively connected to the reaction chamber 32 and the breathing mask 6, and the O2 transmission pipeline 5 is used to transmit the O2 generated by the reaction chamber 32 to the breathing mask 6. As Figure 9 shown, the control unit 1 is configured to control the reaction control device 33 to adjust the opening degree of the connection between the material chamber 31 and the reaction chamber 32 based on the oxygen concentration in the vehicle detected by the oxygen concentration sensor 2. Among them, when the material chamber 31 and the reaction chamber 32 are connected, the CO2 in the reaction chamber 32 reacts with the Na2O2 in the material chamber 31 to generate O2.

[0063] Among them, the oxygen concentration in the vehicle can also be referred to as C c(Current Ambient Oxygen Concentration, Real-time Oxygen Concentration).

[0064] Multiple chemical reactions occur in the reaction chamber 32: Na2O2 + H2O = 2NaOH + H2O2, 2H2O2 = 2H2O + O2, 2NaOH + CO2 = Na2CO3 + H2O. The overall chemical reaction equation in the reaction chamber 32 is: 2Na2O2 + CO2 = 2Na2CO3 + O2.

[0065] As Figure 3 shown, the on-vehicle oxygen supply device is powered by a power source 100, and the power source 100 is electrically connected to the control unit 1 and the oxygen concentration sensor 2.

[0066] The power source 100, the control unit 1, the oxygen concentration sensor 2, the oxygen generation unit 3, the CO2 transmission pipeline 4, and the O2 transmission pipeline 5 are all externally provided with waterproof enclosures. The waterproof grade of the waterproof enclosures can reach IP68, which can ensure that each component can still work normally after being immersed in water for a long time and will not be damaged due to water ingress. The outside of the entire on-vehicle oxygen supply device can also be provided with a waterproof enclosure, and the control unit 1, the oxygen concentration sensor 2, the oxygen generation unit 3, the CO2 transmission pipeline 4, and the O2 transmission pipeline 5 are all located inside the waterproof enclosure.

[0067] The oxygen concentration sensor 2 includes two metal electrodes, an electrolyte solution, a polymer diffusion permeable membrane, and a housing. The anode (working electrode) is porous platinum, and the cathode (counter electrode) is lead. The two electrodes are immersed in a KOH solution. During operation, oxygen molecules in the environment enter the interior of the oxygen concentration sensor 2 through the polymer diffusion permeable membrane for a chemical reaction. Oxygen is reduced to hydroxide ions at the anode, and lead at the cathode is oxidized. The current output in this electrochemical reaction depends on the number of oxygen molecules diffusing to the anode, and the diffusion rate of oxygen molecules is proportional to the oxygen concentration in the environment. Therefore, the magnitude of the output current in the oxygen concentration sensor 2 is only related to the oxygen concentration in the environment. Thus, by measuring the output current in the oxygen concentration sensor 2, the C c (Current Ambient Oxygen Concentration, Real-time Oxygen Concentration). The output current of the oxygen concentration sensor 2 undergoes a certain conversion process to output an electrical signal containing oxygen concentration information and is transmitted to the control unit 1 for the next operation.

[0068] After the CO2 exhaled by the occupant enters the reaction chamber 32, it undergoes a chemical reaction by contacting with Na2O2 in the material chamber 31. The reaction control device 33 controls the contact area between CO2 and Na2O2 by controlling the opening degree of the connection between the material chamber 31 and the reaction chamber 32, thereby controlling the reaction rate between CO2 and Na2O2.

[0069] The safe range of the oxygen concentration in the environment is 19.5%VOL to 23.5%VOL, and C k (Standard Oxygen Concentration, the standard value of the environmental oxygen concentration) is 20.9%VOL. Therefore, the first target concentration threshold can be set to 19.5%VOL, and the second target concentration threshold is 17%VOL.

[0070] When the oxygen concentration in the vehicle is less than the first target concentration threshold, the reaction control device 33 controls the connection between the material chamber 31 and the reaction chamber 32. When the oxygen concentration in the vehicle is greater than the second target concentration threshold and less than the first target concentration threshold, the smaller the oxygen concentration, the larger the connection opening between the material chamber 31 and the reaction chamber 32, and the larger the oxygen concentration, the smaller the connection opening between the material chamber  and the reaction chamber 32. When the oxygen concentration in the vehicle is less than the second target concentration threshold, the reaction control device 33 controls the connection opening between the material chamber 31 and the reaction chamber 32 to reach the maximum. When the oxygen concentration threshold in the vehicle is greater than the first target concentration threshold, the reaction control device 33 controls the connection opening between the material chamber 31 and the reaction chamber 32 to be 0, that is, separates the material chamber 31 and the reaction chamber 32.

[0071] The oxygen concentration sensor 2 is electrically connected to the control unit 1 through Ethernet. The speed of Ethernet transmission signal is relatively fast, and it can timely feedback the oxygen concentration in the environment to the control unit 1.

[0072] The reaction control device 33 is electrically connected to the control unit 1 through the CAN / CANFD bus. The cost of the CAN / CANFD bus is relatively low. Therefore, using the CAN / CANFD bus can reduce the manufacturing cost of the vehicle-mounted oxygen supply device.

[0073] The breathing mask 6 can centrally absorb CO2 and centrally supply O2. Compared with the diffusive oxygen supply, this oxygen supply method has higher efficiency and higher obtained O2 concentration.

[0074] The on-vehicle oxygen supply device provided by the disclosed embodiments contains Na2O2 within the oxygen production unit 3, which can generate oxygen. When a passenger puts on a breathing mask 6, exhaled CO2 enters the reaction chamber 32 via the CO2 transmission line 4. There, the CO2 reacts chemically with the Na2O2 to generate O2. The O2 generated in the reaction chamber 32 enters the breathing mask 6 via the O2 transmission line 4. When the passenger inhales, they inhale the O2, thus preventing hypoxia. Because the oxygen supply device stores Na2O2, which can generate O2, rather than gaseous or liquid oxygen, Na2O2 is a solid, making it easier to store and occupying a smaller volume, enabling the oxygen supply device to provide a larger amount of oxygen within a limited space. Furthermore, the control unit 1 controls the reaction control device 33 to adjust the degree of communication between the material chamber 31 and the reaction chamber 32 based on the oxygen concentration within the vehicle, thereby controlling the rate of O2 generation. This ensures that the reaction chamber 32 can generate O2 when the oxygen concentration is low, while also ensuring that Na2O2 is not consumed when the oxygen concentration is high. Next, an exemplary description is given of how the reaction control device 33 controls the degree of communication between the material chamber 31 and the reaction chamber 32:

[0075] In some examples, such as Figure 4 and Figure 5 As shown, the reaction control device 33 includes a first control plate 331, a second control plate 332, and a drive member 333. The first control plate 331 has a first hole 331a, and the second control plate 332 has a second hole 332a. The material chamber 31 and the reaction chamber 32 are connected through the overlapping portion between the first hole 331a and the second hole 332a. The drive member 333 is used to drive the first control plate 331 and / or the second control plate 332 to translate, thereby adjusting the size of the overlapping portion between the first hole 331a and the second hole 332a.

[0076] The first control plate 331 and the second control plate 332 may both be rectangular, and have the same length, width, and thickness. The first hole 331a and the second hole 332a may both be multiple, and the number of the first hole 331a and the second hole 332a may be equal.

[0077] It is understandable that the degree of communication between the material chamber 31 and the reaction chamber 32 is related to the size of the overlapped portion between the first hole 331a and the second hole 332a. Figure 6 As shown, when the first hole 331a and the second hole 332a completely overlap, the communication between the material chamber 31 and the reaction chamber 32 is maximized. When the first hole 331a and the second hole 332a are completely offset, that is, when the area of the overlapping portion between the first hole 331a and the second hole 332a is zero, the material chamber 31 and the reaction chamber 32 are completely separated.

[0078] Next, an exemplary implementation of the driving member 333 of the reaction control device 33 will be described:

[0079] As Figure 7 shown, the driving member 333 includes a motor 3331 and a gear 3332, and the motor 3331 and the gear 3332 are in transmission connection. At least one of the first control board 331 and the second control board 332 has a rack 3311, and the rack 3311 meshes with the gear 3332. When the motor 3331 rotates, the gear 3332 also rotates accordingly. In this way, the gear 3332 can push the rack 3311 to move. When the first control board 331 has the rack 3311, when the motor 3331 rotates, the first control board 331 can be driven to translate through the rack 3311. When the second control board 332 has the rack 3311, when the motor 3331 rotates, the second control board 332 can be driven to translate through the rack 3311.

[0080] In some other examples, both the first control board 331 and the second control board 332 can have a rack 3311, and the rack 3311 of the first control board 331 and the rack 3311 of the second control board 332 are arranged oppositely. The gear 3332 is located between the two racks 3311 and meshes with the two racks 3311 respectively. In this way, when the motor 3331 rotates, the gear 3332 can drive the first control board 331 and the second control board 332 to translate relatively or away from each other.

[0081] [[ID=I2]]It should be noted that the parts of the first control board 331 and the second control board 332 other than the rack 3311 should be closely attached to avoid a gap between the first control board 331 and the second control board 332. Otherwise, when the overlapping area of the first hole 331a and the second hole 332a is 0, CO2 can still pass through the first hole 331a and the second hole 332a through the gap.

[0082] In some other examples, the driving member 333 can also include a motor and a ball screw. Among them, the ball screw includes a screw rod and a nut, and the motor is in transmission connection with the screw rod. When the driving member 333 is in transmission connection with the first control board 331, the screw rod passes through the side of the first control board 331, and the nut is fixedly connected to the first control board 331. When the motor works, the motor drives the screw rod to rotate. At this time, the nut moves linearly along the screw rod, thereby driving the first control board 331 to translate. It should be noted that when the screw rod passes through the first control board 331, the first hole 331a should be avoided.

[0083] Of course, in some other examples, the screw rod can also pass through the side of the second control board 332, thereby driving the second control board 332 to translate.

[0084] When a chemical reaction occurs in the reaction chamber 32, a large amount of heat will be released. Therefore, asFigure 1 As shown, the oxygen generation unit 3 further includes a temperature control device 34 and a heat dissipation device 35. At least a part of the temperature control device 34 is fixed inside the reaction chamber 32, and the heat dissipation device 35 is fixed outside the reaction chamber 32. As Figure 10 shown, the control unit 1 is configured to: when the temperature inside the reaction chamber 32 detected by the temperature control device 34 is higher than the target temperature threshold, control the heat dissipation device 35 to turn on. When the temperature detected by the temperature control device 34 is lower than the target temperature threshold, control the heat dissipation device 35 to turn off. After the heat dissipation device 35 is turned on, it can cool down the reaction chamber 32 to prevent the reaction chamber 32 and the components around it from being damaged by heat. Due to the adjustment of the temperature control device 34 and the heat dissipation device 35, the temperature inside the reaction chamber 32 can be maintained near the target temperature threshold.

[0085] Among them, the target temperature threshold can also be referred to as T ort (Optimum Reaction Temperature), and the reaction rate of Na202 and CO2 is the fastest at the target temperature threshold. The temperature inside the reaction chamber 32 can be maintained near the target temperature threshold, which is beneficial to maintaining the fastest reaction rate of Na202 and CO2 under a certain contact area.

[0086] The temperature control device 34 can also be called a temperature sensor, and the type of the temperature control device 34 can be an RTD (Resistance Temperature Detector). As Figure 3 shown, the temperature control device 34 is electrically connected to the power supply 100 through a constant current control circuit 341, so that the current source applied to the temperature control device 34 can be kept stable. The temperature control device 34 is electrically connected to the control unit 1 through an A / D analog-to-digital conversion circuit 342. When the temperature of the reaction chamber 32 changes, the voltage across the resistor in the temperature control device 34 will change, and the voltage signal will be converted into a digital signal by the A / D analog-to-digital conversion circuit 342 and output to the control unit 1. Among them, the digital signal contains the T c (Current Temperature) information of the reaction chamber 32.

[0087] The heat dissipation device 35 can be a water-cooled heat dissipation device, and the pipes of the heat dissipation device 35 can be closely wound around the outside of the reaction chamber 32 to increase the heat dissipation area.

[0088] Since both the reactants and products in the reaction chamber 32 include gases, the air pressure in the reaction chamber 32 will change. To keep the pressure in the reaction chamber 32 always within a safe range, the oxygen generation unit 3 further includes a pressure relief valve 36, and the pressure relief valve 36 is used to connect the inside and outside of the reaction chamber 32 when the pressure inside the reaction chamber 32 is greater than the target pressure threshold. As Figure 1As shown, the pressure relief valve 36 is fixed outside the reaction chamber 32. When the pressure inside the reaction chamber 32 is greater than the target pressure threshold, the pressure relief valve 44 opens to reduce the pressure inside the reaction chamber 32.

[0089] Next, an exemplary implementation of the O2 transmission pipeline 5 will be described:

[0090] In some examples, as Figure 1 shown, the O2 transmission pipeline 5 includes a first one-way valve 51 and a filter 52. The filter 52 is located between the reaction chamber 32 and the first one-way valve 51. The reaction chamber 32, the filter 52, and the intake port of the first one-way valve 51 are sequentially connected through a gas conduit. The outlet of the first one-way valve 51 is connected to the breathing mask 6 through a gas conduit. When the occupant wears the breathing mask 6, the first one-way valve 51 closes during exhalation, causing the CO2 exhaled by the occupant to enter the reaction chamber 32 through the CO2 transmission pipeline 4. When the occupant inhales, the first one-way valve 51 opens, allowing the O2 in the reaction chamber 32 to enter the breathing mask 6 through the first one-way valve 51.

[0091] Since the reaction chamber 32 is connected to the material chamber 31, the O2 output from the reaction chamber 32 may be mixed with Na2O2 powder. Therefore, the filter 52 is provided to filter out the Na2O2 powder, thereby preventing the occupant from inhaling the Na2O2 powder. In addition, it can also prevent the Na2O2 powder from clogging the first one-way valve 51.

[0092] Next, an exemplary implementation of the CO2 transmission pipeline 4 will be described:

[0093] In some examples, as Figure 1 shown, the CO2 transmission pipeline 4 includes a second one-way valve 41 and a humidifier 42. The second one-way valve 41 and the humidifier 42 are connected through a gas conduit.

[0094] When the occupant wears the breathing mask 6, the second one-way valve 41 opens during exhalation, and the CO2 exhaled by the occupant enters the reaction chamber 32 through the CO2 transmission pipeline 4. When the occupant inhales, the second one-way valve 41 closes, allowing the O2 in the reaction chamber 32 to enter the breathing mask 6 through the first one-way valve 51.

[0095] Since H2O is required for the reaction in the reaction chamber 32, the humidifier 42 is provided to supply H2O to the reaction chamber 32. The CO2 exhaled by the occupant can carry water vapor into the reaction chamber 32 after passing through the humidifier 42.

[0096] In the embodiments of the present disclosure, the relative positions of the second one-way valve 41 and the humidifier 42 are not specifically limited. It may be that the breathing mask 6, the humidifier 42, the second one-way valve 41, and the reaction chamber 32 are sequentially connected through a gas conduit, or it may be that the breathing mask 6, the second one-way valve 41, the humidifier 42, and the reaction chamber 32 are sequentially connected through a gas conduit. That is, the positions of the second one-way valve 41 and the humidifier 42 can be interchanged.

[0097] The embodiments of the present disclosure further provide a vehicle, which includes the above-mentioned on-vehicle oxygen supply device.

[0098] Among them, the breathing mask 6 is located inside the vehicle.

[0099] The embodiments of the present disclosure further provide a control method for the on-vehicle oxygen supply device. The control method is applied to the control unit 1 of the above-mentioned on-vehicle oxygen supply device, as Figure 8 shown, the control method includes the following steps:

[0100] In step 801, the concentration of oxygen in the vehicle detected by the oxygen concentration sensor 2 is obtained. The oxygen concentration sensor 2 transmits a signal containing the concentration information of the oxygen in the vehicle to the control unit 1.

[0101] In step 802, based on the concentration of oxygen in the vehicle detected by the oxygen concentration sensor 2, the control unit 1 controls the reaction control device 33 to adjust the communication opening degree between the material chamber 31 and the reaction chamber 32.

[0102] Among them, when the concentration of oxygen in the vehicle detected by the oxygen concentration sensor 2 is less than the first target concentration threshold, the reaction control device 33 controls the communication between the material chamber 31 and the reaction chamber 32. When the oxygen concentration in the vehicle is greater than the second target concentration threshold and less than the first target concentration threshold, the smaller the oxygen concentration, the greater the communication opening degree between the material chamber 31 and the reaction chamber 32 controlled by the reaction control device 33. When the oxygen concentration in the vehicle is less than the second target concentration threshold, the reaction control device 33 controls the communication opening degree between the material chamber 31 and the reaction chamber 32 to reach the maximum. When the oxygen concentration threshold in the vehicle is greater than the first target concentration threshold, the reaction control device 33 controls the communication opening degree between the material chamber 31 and the reaction chamber 32 to be 0, that is, separates the material chamber 31 and the reaction chamber 32.

[0103] In some examples, when the reaction control device 33 includes a first control board 331, a second control board 332, and a driving member 333, and the first control board 331 has a first hole 331a and the second control board 332 has a second hole 332a, the control unit 1 controls the reaction control device 33 to separate or communicate the material chamber 31 and the reaction chamber 32, including:

[0104] The driving member 333 drives the first control board 331 and / or the second control board 332 to translate, so as to adjust the size of the overlapping part between the first hole 331a and the second hole 332a.

[0105] Wherein, when the area of the overlapping part between the first hole 331a and the second hole 332a is 0, the reaction control device 33 separates the material chamber 31 and the reaction chamber 32. When the first hole 331a and the second hole 332a completely overlap, the reaction control device 33 connects the material chamber 31 and the reaction chamber 32.

[0106] In some examples, when the temperature detected by the temperature control device 34 is higher than the target temperature threshold, the control unit 1 controls the heat dissipation device 35 to turn on. When the temperature detected by the temperature control device 34 is lower than the target temperature threshold, the control unit 1 controls the heat dissipation device 35 to turn off.

[0107] The above are only optional embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A vehicle-mounted oxygen supply device, characterized in that, The vehicle-mounted oxygen supply device comprises a control unit (1), an oxygen concentration sensor (2), an oxygen production unit (3), a CO2 transmission pipeline (4), an O2 transmission pipeline (5) and a breathing mask (6); The oxygen production unit (3) comprises a material chamber (31), a reaction chamber (32) and a reaction control device (33); Na2O2 is provided in the material chamber (31); the reaction control device (33) is located between the material chamber (31) and the reaction chamber (32); the reaction control device (33) comprises a first control plate (331), a second control plate (332) and a driving member (333); the first control plate (331) has a first hole (331a); the second control plate (332) has a second hole (332a); the material chamber (31) and the reaction chamber (32) are connected through the overlapping portion between the first hole (331a) and the second hole (332a); the driving member (333) is used to drive the first control plate (331) and / or the second control plate (332) to translate to adjust the size of the overlapping portion between the first hole (331a) and the second hole (332a); The two ends of the CO2 transmission pipeline (4) are respectively connected to the reaction chamber (32) and the breathing mask (6), and the CO2 transmission pipeline (4) is used to transmit the CO2 generated by the occupant at the breathing mask (6) to the reaction chamber (32); The two ends of the O2 transmission pipeline (5) are respectively connected to the reaction chamber (32) and the breathing mask (6), and the O2 transmission pipeline (5) is used to transmit the O2 generated by the reaction chamber (32) to the breathing mask (6); The control unit (1) is configured to control the driving member (333) to adjust the size of the overlapping portion between the first hole (331a) and the second hole (332a) based on the oxygen concentration in the vehicle detected by the oxygen concentration sensor (2), wherein when the material chamber (31) and the reaction chamber (32) are connected, CO2 in the reaction chamber (32) reacts with Na2O2 in the material chamber (31) to generate O2.

2. The vehicle-mounted oxygen supply device according to claim 1, characterized in that The driving member (333) includes a motor (3331) and a gear (3332), and the motor (3331) and the gear (3332) are in transmission connection; At least one of the first control plate (331) and the second control plate (332) has a rack (3311), and the rack (3311) is engaged with the gear (3332).

3. The vehicle-mounted oxygen supply device according to claim 1 or 2, characterized in that, The oxygen production unit (3) further comprises a temperature control device (34) and a heat dissipation device (35), wherein at least a portion of the temperature control device (34) is fixed inside the reaction chamber (32), and the heat dissipation device (35) is fixed outside the reaction chamber (32); The control unit (1) is configured to control the heat dissipation device (35) to turn on when the temperature in the reaction chamber (32) detected by the temperature control device (34) is higher than a target temperature threshold; When the temperature detected by the temperature control device (34) is lower than the target temperature threshold, the heat dissipation device (35) is controlled to be turned off.

4. The vehicle oxygen supply device according to claim 1 or 2, characterized in that, The oxygen generation unit (3) further includes a pressure relief valve (36), and the pressure relief valve (36) is configured to communicate the inside and the outside of the reaction chamber (32) when the pressure inside the reaction chamber (32) is greater than the target pressure threshold.

5. The vehicle-mounted oxygen supply device according to claim 1 or 2, characterized in that, The O2 transmission pipeline (5) includes a first one-way valve (51) and a filter (52); The reaction chamber (32), the filter (52), the first one-way valve (51), and the breathing mask (6) are connected in sequence.

6. The vehicle-mounted oxygen supply device according to claim 1 or 2, characterized in that, The CO2 transmission pipeline (4) includes a second one-way valve (41) and a humidifier (42).

7. A vehicle, characterized in that, The vehicle includes the in-vehicle oxygen supply device according to any one of claims 1-6.

8. A control method for an in-vehicle oxygen supply device, characterized in that, The control method is applied to the control unit (1) of the in-vehicle oxygen supply device according to any one of claims 1-6, and the control method includes: Obtaining the oxygen concentration inside the vehicle detected by the oxygen concentration sensor (2); Based on the oxygen concentration inside the vehicle detected by the oxygen concentration sensor (2), controlling the driving member (333) to drive the first control board (331) and / or the second control board (332) to translate, so as to adjust the size of the overlapping part between the first hole (331a) and the second hole (332a).

9. The control method according to claim 8, characterized in that When the oxygen generation unit (3) further includes a temperature control device (34) and a heat dissipation device (35), the control method further includes: When the temperature detected by the temperature control device (34) is higher than the target temperature threshold, controlling the heat dissipation device (35) to be turned on; When the temperature detected by the temperature control device (34) is lower than the target temperature threshold, controlling the heat dissipation device (35) to be turned off.

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