Filter system, control method thereof, and vehicle

Abstract

The application provides a filtering system, a control method thereof and a vehicle. The filtering system comprises a cooling circuit, a first ion exchanger, a heating circuit and a second ion exchanger. The cooling circuit is used for cooling, and the first ion exchanger is arranged in the cooling circuit and used for filtering ions in the cooling circuit. The heating circuit is used for heating, and the second ion exchanger is arranged in the heating circuit and used for filtering ions in the heating circuit. The technical scheme of the application can reduce the conductivity in the pipeline, and the vehicle is safer.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a filtration system, its control method, and a vehicle. Background Technology

[0002] Vehicles have various pipes inside, through which different liquids flow. These liquids come into contact with various devices as they flow through these pipes. These devices can release ions, causing the conductivity of the liquid in the pipes to increase. This conductivity can gradually rise and even exceed standard levels, making the flowing liquid more susceptible to electrical conductivity, posing a safety hazard to the vehicle. Summary of the Invention

[0003] One object of this application is to provide a filtration system, a control method thereof, and a vehicle that can reduce the conductivity in pipelines, thereby making the vehicle safer.

[0004] According to one aspect of this application, a filtration system is provided, the filtration system being applied to a vehicle, the filtration system comprising:

[0005] Cooling circuit, the cooling circuit being used for cooling;

[0006] A first ion exchanger is disposed in the cooling circuit and is used to filter ions in the cooling circuit.

[0007] A heating circuit, wherein the heating circuit is used to raise the temperature;

[0008] A second ion exchanger is installed in the heating circuit and is used to filter ions in the heating circuit.

[0009] In one aspect, the cooling circuit and the heating circuit are cyclically connected, or the cooling circuit and the heating circuit are cyclically independent.

[0010] In one aspect, the filtration system further includes:

[0011] A first water pump is located in the cooling circuit and is used to pump a first liquid in the cooling circuit.

[0012] The second water pump is located in the heating circuit and is used to pump the second liquid in the heating circuit.

[0013] The cooling circuit and the heating circuit are connected in a loop, and the filtration system further includes:

[0014] A high-temperature body is disposed in the cooling circuit, the temperature of the high-temperature body is higher than the temperature of the first liquid, and the cooling circuit is used to reduce the temperature of the high-temperature body.

[0015] The first connecting pipe has its inlet end connected to the cooling circuit and the connection point is located in the pipeline flowing through the high-temperature body. The outlet end of the first connecting pipe is connected to the heating circuit.

[0016] The second connecting pipe has its inlet end connected to the heating circuit and its outlet end connected to the cooling circuit.

[0017] In one aspect, the filtration system further includes a radiator, one end of which is connected to the first connecting pipe and the other end of which is connected to the second connecting pipe.

[0018] In one aspect, the filtration system further includes a first three-way valve disposed in the pipe through which the cooling circuit flows through the high-temperature body, wherein the first port of the first three-way valve faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe.

[0019] In one aspect, the filtration system further includes a second three-way valve disposed in the heating circuit, wherein a first port of the second three-way valve is connected to the first connecting pipe, a second port faces the inflow direction of the second liquid in the heating circuit, and a third port faces the outflow direction of the second liquid.

[0020] The second three-way valve is located in the outlet direction of the second water pump, and the second ion exchanger is located in the pipeline between the second water pump and the second three-way valve.

[0021] In one aspect, the filtration system further includes a heater and a warm air core, both of which are located in the heating circuit. The heater is located in the pipeline between the third port of the second three-way valve and the warm air core, and the warm air core is used to heat the passenger space of the vehicle.

[0022] The high-temperature body is a fuel cell stack or an engine.

[0023] In one aspect, the inlet end of the second connecting pipe is connected to the second water pump, and the outlet end of the second connecting pipe is connected to the first water pump;

[0024] The high-temperature body is located in the pipeline in the outlet direction of the first water pump, and the first ion exchanger is located in the pipeline between the high-temperature body and the first water pump.

[0025] In one aspect, the filtration system further includes: a first water tank and a second water tank, the first water tank being connected to the first water pump and the second water tank being connected to the second water pump;

[0026] The first water tank and the second water tank are shared water tanks, or the first water tank and the second water tank are independent water tanks.

[0027] Furthermore, to address the aforementioned problems, this application also provides a control method for a filtration system, the control method being used in the filtration system described above, the control method comprising:

[0028] The conductivity of the heating circuit is obtained, and the first ion exchanger is controlled to perform ion exchange based on the conductivity of the heating circuit.

[0029] The conductivity of the cooling circuit is obtained, and the second ion exchanger is controlled to perform ion exchange based on the conductivity of the cooling circuit.

[0030] In one aspect, the step of obtaining the conductivity of the heating circuit and controlling the first ion exchanger to perform ion exchange based on the conductivity of the heating circuit includes:

[0031] Obtain the electrical conductivity of the heating circuit and compare it with a preset first threshold.

[0032] When the conductivity of the heating circuit is greater than or equal to the first threshold, the first ion exchanger is controlled to perform ion exchange.

[0033] When the conductivity of the heating circuit is less than the first threshold, the first ion exchanger is controlled to stop ion exchange.

[0034] In one aspect, the step of obtaining the conductivity of the cooling circuit and controlling the second ion exchanger to perform ion exchange based on the conductivity of the cooling circuit includes:

[0035] The conductivity of the cooling circuit is obtained, and the conductivity of the cooling circuit is compared with a preset second threshold.

[0036] When the conductivity of the cooling circuit is greater than or equal to the second threshold, the second ion exchanger is controlled to perform ion exchange.

[0037] When the conductivity of the cooling circuit is less than the second threshold, the second ion exchanger is controlled to stop ion exchange.

[0038] In one aspect, prior to the step of controlling the first ion exchanger to perform ion exchange, the following is included:

[0039] Obtain the ambient temperature and humidity of the filtration system.

[0040] When the ambient temperature is lower than the preset temperature and the ambient humidity is lower than the preset humidity, it is determined that the heating circuit is prohibited from performing the ion exchange step.

[0041] When the ambient temperature is greater than or equal to a preset temperature and the ambient humidity is greater than or equal to a preset humidity, the heating circuit is determined to perform an ion exchange step.

[0042] In one aspect, the filtration system further includes: a first connecting pipe, a first three-way valve, a second connecting pipe and a second three-way valve, wherein the inlet end of the first connecting pipe is connected to the cooling circuit, the outlet end of the first connecting pipe is connected to the heating circuit, the first port of the first three-way valve faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe.

[0043] The inlet end of the second connecting pipe is connected to the heating circuit, and the outlet end of the second connecting pipe is connected to the cooling circuit; the second three-way valve is located in the heating circuit, the first port of the second three-way valve is connected to the first connecting pipe, the second port faces the inflow direction of the second liquid in the heating circuit, and the third port faces the outflow direction of the second liquid;

[0044] When the ambient temperature is greater than or equal to a preset temperature and the ambient humidity is greater than or equal to a preset humidity, after determining that the heating circuit will perform an ion exchange step, the following steps are included:

[0045] If the conductivity of both the heating circuit and the cooling circuit exceeds the standard, control both the first three-way valve and the second three-way valve to open, so that the cooling circuit and the heating circuit are circulated and connected.

[0046] In one aspect, prior to the step of obtaining the conductivity of the heating circuit, the method includes:

[0047] Once the vehicle is powered off, a wake-up signal is generated, and conductivity is collected based on the wake-up signal.

[0048] In addition, to address the aforementioned issues, this application also provides a vehicle comprising a frame and a filtration system as described above, wherein the frame forms a support space and the filtration system is disposed within the support space.

[0049] In this application's technical solution, a first ion exchanger is installed in the cooling circuit. When the liquid flowing in the cooling circuit passes through the first ion exchanger, it filters ions from the cooling circuit. Similarly, a second ion exchanger is installed in the heating circuit. When the liquid flowing in the heating circuit passes through the second ion exchanger, it filters ions from the heating circuit. Therefore, this technical solution, by installing ion exchangers in both the cooling and heating circuits, reduces the conductivity in the pipelines, making the vehicle safer.

[0050] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0051] The above and other objectives, features and advantages of this application will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0052] Figure 1 This is a schematic diagram of the filtering system in this application.

[0053] Figure 2 A flowchart illustrating the first embodiment of the control method for the filtration system in this application.

[0054] Figure 3 This application Figure 2 A flowchart illustrating step S10 of the control method for the medium-filtration system.

[0055] Figure 4 This application Figure 2 A flowchart illustrating step S20 of the control method for the medium filtration system.

[0056] Figure 5 A flowchart illustrating step S30 of the control method for the filtration system in this application.

[0057] Figure 6 This application Figure 5 A flowchart illustrating steps S30 and S40 of the control method for the intermediate filtration system.

[0058] Figure 7 A flowchart illustrating the second embodiment of the control method for the filtration system in this application.

[0059] Figure 8 A flowchart illustrating the third embodiment of the control method for the filtration system in this application.

[0060] The annotations in the attached figures are explained as follows:

[0061] 10. Cooling circuit; 21. First water pump; 22. Second water pump; 31. First ion exchanger; 32. Second ion exchanger; 41. High-temperature body; 42. Heater; 43. Radiator; 44. Warm air core; 51. First connecting pipe; 52. Second connecting pipe; 60. Heating circuit; 71. First three-way valve; 72. Second three-way valve; 81. First water tank; 82. Second water tank; 90. Passenger space;

[0062] 101, First liquid flow direction; 601, Second liquid flow direction. Detailed Implementation

[0063] Although this application can be readily embodied in various forms of implementation, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of this application and is not intended to limit the application to what is described herein.

[0064] Therefore, a feature described in this specification is used to illustrate one feature of one embodiment of this application, and does not imply that every embodiment of this application must have the described feature. Furthermore, it should be noted that this specification describes many features. While certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0065] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this application are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0066] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make the description of this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0067] The preferred embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0068] See Figure 1As shown, this application provides a filtration system applied to vehicles, mainly used to filter free ions in some pipelines of the vehicle and reduce the conductivity of the liquid in the pipelines.

[0069] Specifically, the filtration system includes a cooling circuit 10 and a heating circuit 60, wherein the cooling circuit 10 is used for cooling and the heating circuit 60 is used for heating.

[0070] The filtration system also includes a first ion exchanger 31, which is located within the cooling circuit 10. Multiple water pipes are connected end-to-end within the cooling circuit 10 to form a loop, constituting a circulation. The first ion exchanger 31 is positioned within this loop. The first ion exchanger 31 filters ions from the cooling circuit 10. As the liquid gradually flows through the cooling circuit 10, it passes through the first ion exchanger 31. When it is necessary to reduce the conductivity in the pipes, the first ion exchanger 31 activates to perform ion filtration.

[0071] The filtration system also includes a second ion exchanger 32, which is located in the heating circuit 60. The heating circuit 60 is also formed by multiple sections of water pipes connected end-to-end, creating a loop. The second ion exchanger 32 is located within this loop. The second ion exchanger 32 is used to filter ions in the heating circuit 60. The first ion exchanger 31 and the second ion exchanger 32 can filter ions by using an exchange resin, where the components in the exchange resin react with the ions to remove them. Alternatively, they can use adsorption, where ions are adsorbed after passing through the ion exchanger.

[0072] In this embodiment, a first ion exchanger 31 is provided in the cooling circuit 10. When the liquid flowing in the cooling circuit 10 passes through the first ion exchanger 31, the first ion exchanger 31 can filter ions in the cooling circuit 10. Similarly, a second ion exchanger 32 is provided in the heating circuit 60. When the liquid flowing in the heating circuit 60 passes through the second ion exchanger 32, the second ion exchanger 32 can filter ions in the heating circuit 60. Therefore, this technical solution, by providing ion exchangers in both the cooling circuit 10 and the heating circuit 60, reduces the conductivity in the pipelines, making the vehicle safer.

[0073] It should be noted that the cooling circuit 10 and the heating circuit 60 can be either independent or interconnected systems. When the cooling circuit 10 and the heating circuit 60 circulate independently, the cooling circuit 10 can provide the heat exchanged during cooling to the heating circuit 60. For example, the filtration system includes a heat exchanger; the cooling circuit 10 exchanges heat with the heat exchanger, which then transfers the heat to the heating circuit 60 to raise its temperature.

[0074] In addition, the filtration system also includes a first water pump 21 and a second water pump 22. The first water pump 21 is located in the cooling circuit 10. The first water pump 21 is used to pump the first liquid in the cooling circuit 10. When the first water pump 21 is working, it generates pumping pressure, and the first liquid begins to flow under the action of the pumping pressure. Figure 1 It can be seen that the first liquid flow direction 101 is in the cooling circuit 10.

[0075] The second water pump 22 is located in the heating circuit 60. The second water pump 22 is used to pump the second liquid in the heating circuit 60. The second water pump 22 and the first water pump 21 operate separately, so that sufficient pumping force can be provided for the cooling circuit 10 and the heating circuit 60 respectively. Figure 1 The second liquid flow direction 601 can also be seen in the heating circuit 60.

[0076] The first liquid and the second liquid can be the same type of liquid or different types of liquid. For example, one can be water, and the other can be a mixture of water and antifreeze. Alternatively, both can be water, or a mixture of water and antifreeze.

[0077] To save energy and protect the environment, the cooling circuit 10 and the heating circuit 60 form an interconnected circulation system. Therefore, the filtration system also includes: a high-temperature body 41, a first connecting pipe 51, and a second connecting pipe 52.

[0078] A high-temperature body 41 is located in the cooling circuit 10. The temperature of the high-temperature body 41 is higher than the temperature of the first liquid. The cooling circuit 10 is used to reduce the temperature of the high-temperature body 41; the high-temperature body 41 is the object of cooling in the cooling circuit 10. The first water pump 21 drives the first liquid in the cooling circuit 10 to circulate through pumping force. When passing through the high-temperature body 41, it carries away the heat of the high-temperature body 41, thereby cooling the high-temperature body 41 and ensuring its normal operation.

[0079] For example, in a new energy electric vehicle, the high-temperature component 41 is the fuel cell stack, which provides power to the vehicle. The fuel cell stack generates heat during operation, and if this heat accumulates, it can affect its normal operation. Therefore, it is cooled by the cooling circuit 10.

[0080] In a gasoline-powered vehicle, the high-temperature component 41 is the engine, which provides power to the vehicle. The engine generates heat when it is working, and in order to quickly dissipate the heat of the engine, it is cooled through the cooling circuit 10.

[0081] The inlet end of the first connecting pipe 51 is connected to the cooling circuit 10, and the connection point is located in the pipeline flowing through the high-temperature body 41. The outlet end of the first connecting pipe 51 is connected to the heating circuit 60. The first liquid, having absorbed some of the heat from the high-temperature body 41, has a relatively high temperature. This higher-temperature first liquid is then transported to the heating circuit 60 through the first connecting pipe 51, allowing the heating circuit 60 to fully utilize the heat in the first liquid for heating during operation. At this time, the first liquid and the second liquid are of the same type.

[0082] The inlet end of the second connecting pipe 52 is connected to the heating circuit 60, and the outlet end of the second connecting pipe 52 is connected to the cooling circuit 10. After the heating process is completed, the second liquid flows back to the cooling circuit 10 through the second connecting pipe 52. This ensures the continuous flow of water, allowing the cooling circuit 10 and the heating circuit 60 to form a larger overall circulation.

[0083] Even with the heating circuit 60 and cooling circuit 10 working together, there may still be excess heat from the high-temperature body 41, and sometimes the heating circuit 60 is closed. To dissipate this heat, the filtration system also includes a radiator 43, one end of which is connected to the first connecting pipe 51, and the other end to the second connecting pipe 52. Thus, the cooling circuit 10 and the heating circuit 60 are directly connected, as are the first and second connecting pipes 51 and 52. The radiator 43 is positioned between the first and second connecting pipes 51 and 52. Through the heat dissipation of the radiator 43, the temperature of the first liquid decreases after flowing through it, thereby dispersing the heat from the high-temperature body 41 into the surrounding air.

[0084] In order to flexibly control the liquid flow direction of the cooling circuit 10, the filtration system also includes a first three-way valve 71. The first three-way valve 71 is located in the pipeline of the cooling circuit 10 through the high-temperature body 41. The first port of the first three-way valve 71 faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe 51.

[0085] Therefore, the first three-way valve 71 has one inlet and two outlets. The inlet is the first port, and the two outlets are the second port and the third port, respectively. The first three-way valve 71 can control the flow direction of the first liquid, for example, switching from flow through the first port and the second port to flow through the first port and the third port. It can also simultaneously ensure that the first liquid flows through the second port and the third port.

[0086] In addition, in order to flexibly control the liquid flow direction of the heating circuit 60, the filtration system also includes a second three-way valve 72. The second three-way valve 72 is located in the heating circuit 60. The first port of the second three-way valve 72 is connected to the first connecting pipe 51, the second port faces the inflow direction of the second liquid in the heating circuit 60, and the third port faces the outflow direction of the second liquid.

[0087] Therefore, the second three-way valve 72 has two inlets and one outlet. One inlet is the first port, the other inlet is the third port, and the outlet is the third port. Through the second three-way valve 72, flow can be switched from the first and third ports to the second and third ports. This allows the connection between the cooling circuit 10 and the heating circuit 60 to be disconnected. Similarly, all three ports of the second three-way valve 72 can be simultaneously connected, in which case, in addition to the circulation formed in the heating circuit 60, the cooling circuit 10 and the heating circuit 60 also form a large circulation.

[0088] Furthermore, the second three-way valve 72 is located in the outlet direction of the second water pump 22, and the second ion exchanger 32 is located in the pipeline between the second water pump 22 and the second three-way valve 72. The second liquid pumped by the second water pump 22 first passes through the second ion exchanger 32 before flowing, effectively reducing the impact of free ions in the second liquid on other structural components.

[0089] In order to make the heating circuit 60 fully exert its heating and temperature-raising function, the filtration system also includes a heater 42 and a heater core 44. Both the heater 42 and the heater core 44 are located in the heating circuit 60. The heater 42 is located in the pipeline between the third port of the second three-way valve 72 and the heater core 44. The heater core 44 is used to heat the passenger space 90 of the vehicle.

[0090] The high-temperature component 41 is either an electric fuel cell stack or an engine. Through the opening of the second three-way valve 72, the heat from the electric fuel cell stack or engine is used to supply the heating circuit 60. This saves power consumption of the heater 42, allowing the heat from the electric fuel cell stack or engine to be supplied to the heater core 44. The heater core 44 exchanges heat with the surrounding air, heating it, and then blows the heated air into the passenger space 90, thus heating the vehicle's passenger space 90.

[0091] To improve the flow efficiency of the cooling circuit 10 and the heating circuit 60, the inlet end of the second connecting pipe 52 is connected to the second water pump 22, and the outlet end of the second connecting pipe 52 is connected to the first water pump 21. Thus, the first water pump 21 and the second water pump 22 are directly connected to the second connecting pipe 52 of the cooling circuit 10 and the heating circuit 60. Through the combined action of the first water pump 21 and the second water pump 22, the liquid delivery capacity is improved.

[0092] A high-temperature body 41 is located in the pipeline in the outlet direction of the first water pump 21, and a first ion exchanger 31 is located in the pipeline between the high-temperature body 41 and the first water pump 21. The temperature of the liquid flowing back to the first water pump 21 has decreased, and it may have incorporated ions during the circulation. Therefore, the first ion exchanger 31 is installed before the first liquid flows to the high-temperature body 41 to ensure that the first liquid flowing to the high-temperature body 41 has undergone ion exchange.

[0093] Although the cooling circuit 10 and the heating circuit 60 form a liquid circulation loop, there are times when neither the cooling circuit 10 nor the heating circuit 60 is working, or when water needs to be added during liquid circulation. Therefore, the filtration system also includes a first water tank 81 and a second water tank 82. The first water tank 81 is connected to the first water pump 21, and the second water tank 82 is connected to the second water pump 22. The first water tank 81 can supply water to the cooling circuit 10 and can also store the water in the cooling circuit 10 when it is not circulating. The second water tank 82 can supply water to the heating circuit 60 and can also store the water in the heating circuit 60.

[0094] In addition, to save interior space in the vehicle, the first water tank 81 and the second water tank 82 are shared water tanks, that is, the first water tank 81 and the second water tank 82 are the same water tank. Of course, for flexible control, the first water tank 81 and the second water tank 82 can also be independent water tanks, in which case the first water tank 81 supplies water to the cooling circuit 10 and the second water tank 82 supplies water to the heating circuit 60.

[0095] See Figure 2 As shown, this application also provides a control method for a filtration system. The control method is used in the filtration system described above and includes:

[0096] Step S10: Obtain the conductivity of the heating circuit 60, and control the first ion exchanger 31 to perform ion exchange based on the conductivity of the heating circuit 60; a conductivity detector is installed in the heating circuit 60, and the detector transmits the detected conductivity of the heating circuit 60 to the control unit, such as a processor. The control unit controls the first ion exchanger 31 to operate based on the detection result.

[0097] Step S20: Obtain the conductivity of the cooling circuit 10, and control the second ion exchanger 32 to perform ion exchange based on the conductivity of the cooling circuit 10. Similarly, a conductivity detector is set in the cooling circuit 10, and the detector transmits the detected conductivity of the cooling circuit 10 to the control unit, which controls the second ion exchanger 32 to operate based on the detection result.

[0098] The order of steps S10 and S20 is not fixed. It is possible to obtain the conductivity of the cooling circuit 10 first, followed by the conductivity of the heating circuit 60. Alternatively, the conductivity of the heating circuit 60 and the conductivity of the cooling circuit 10 can be obtained simultaneously, and then compared and judged separately.

[0099] The control method of this embodiment involves installing a first ion exchanger 31 in the cooling circuit 10, and a first water pump 21 pumping a first liquid to circulate within the cooling circuit 10. As the first liquid passes through the first ion exchanger 31, the first ion exchanger 31 filters ions from the first liquid. Similarly, a second ion exchanger 32 is installed in the heating circuit 60, and a second water pump 22 pumps a second liquid. As the second liquid passes through the second ion exchanger 32, the second ion exchanger 32 filters ions from the second liquid. Therefore, the control method of this technical solution can perform ion filtration operations on both the cooling circuit 10 and the heating circuit 60, thereby reducing the conductivity in the pipelines and making the vehicle safer.

[0100] See Figure 3 As shown, the steps of obtaining the conductivity of the heating circuit 60 and controlling the first ion exchanger 31 to perform ion exchange based on the conductivity of the heating circuit 60 include:

[0101] Step S110: Obtain the conductivity of the heating circuit 60 and compare it with a preset first threshold; generally, the value of the first threshold is between 15 μS / cm and 25 μS / cm. Of course, the first threshold can be set and changed as needed, and the data is saved in the memory. When comparing the data, the control unit retrieves the pre-saved first threshold from the memory and compares the conductivity of the heating circuit 60 with the first threshold.

[0102] In step S120, when the conductivity of the heating circuit 60 is greater than or equal to the first threshold, the first ion exchanger 31 is controlled to perform ion exchange; if the conductivity of the heating circuit 60 is greater than or equal to the first threshold, it indicates that the conductivity of the heating circuit 60 exceeds the standard. In order to ensure the safety of the vehicle, the first ion exchanger 31 is controlled to operate to reduce the conductivity in the heating circuit 60.

[0103] In step S130, when the conductivity of the heating circuit 60 is less than the first threshold, the first ion exchanger 31 is controlled to stop ion exchange. If the conductivity of the heating circuit 60 is less than the first threshold, it means that the conductivity of the heating circuit 60 meets the standard, and in order to save energy, the first ion exchanger 31 is controlled to stop working.

[0104] See Figure 4As shown, the steps of obtaining the conductivity of the cooling circuit 10 and controlling the second ion exchanger 32 to perform ion exchange based on the conductivity of the cooling circuit 10 include:

[0105] Step S210: Obtain the conductivity of the cooling circuit 10 and compare it with a preset second threshold; generally, the value of the second threshold is between 15 μS / cm and 25 μS / cm. The second threshold can also be set and changed as needed, and the data is saved in the memory. When comparing the data, the control unit retrieves the pre-saved second threshold from the memory and compares the conductivity of the heating circuit 60 with the second threshold. The first threshold and the second threshold are stored in different storage units.

[0106] The first threshold and the second threshold can be equal or unequal. Generally speaking, the cooling circuit 10 is closer to the fuel cell stack, and the impact of excessive conductivity on the fuel cell stack is more serious. Therefore, the conductivity requirements for the cooling circuit 10 are more stringent, so the second threshold is lower than the first threshold.

[0107] In step S220, when the conductivity of the cooling circuit 10 is greater than or equal to the second threshold, the second ion exchanger 32 is controlled to perform ion exchange; if the conductivity of the cooling circuit 10 is greater than or equal to the second threshold, it indicates that the conductivity of the cooling circuit 10 exceeds the standard. In order to ensure the vehicle is safer, the second ion exchanger 32 is controlled to operate to reduce the conductivity in the cooling circuit 10.

[0108] In step S230, when the conductivity of the cooling circuit 10 is less than the second threshold, the second ion exchanger 32 is controlled to stop ion exchange. If the conductivity of the cooling circuit 10 is less than the second threshold, it indicates that the conductivity of the cooling circuit 10 meets the standard, and in order to save energy, the second ion exchanger 32 is controlled to stop working.

[0109] See Figure 5 As shown, there are certain prerequisites for performing deionization on the heating circuit 60. Before controlling the first ion exchanger 31 to perform ion exchange, the following steps are taken:

[0110] Step S30: Obtain the ambient temperature and humidity of the filtration system; the environment in which the filtration system operates is the vehicle's interior environment. If the ambient temperature is too low, activating the heating circuit 60 will increase the vehicle's workload. In other words, if the overall temperature of the vehicle is low, activating the heating circuit 60 will prolong the vehicle's start-up time and increase energy consumption.

[0111] Step S31: When the ambient temperature is lower than the preset temperature and the ambient humidity is lower than the preset humidity, the heating circuit 60 is prohibited from performing the ion exchange step. The preset temperature is usually 20 degrees Celsius and the preset humidity is 50%. If both values ​​are lower than these, the heating circuit 60 is prohibited from being opened. Even if the conductivity exceeds the standard, the heating circuit 60 is prohibited from being opened for the purpose of protecting the vehicle and reducing losses.

[0112] Step S32: When the ambient temperature is greater than or equal to the preset temperature and the ambient humidity is greater than or equal to the preset humidity, determine that the heating circuit 60 performs the ion exchange step.

[0113] In addition, when heating is not needed, the heating circuit 60 can be turned on to allow the second liquid in the heating circuit 60 to circulate and undergo ion exchange, but it does not participate in providing heat. This method is not limited by ambient temperature and humidity, and it can also reduce the conductivity of the heating circuit 60.

[0114] In one aspect, the filtration system also includes: a first connecting pipe 51, a first three-way valve 71, a second connecting pipe 52 and a second three-way valve 72, the inlet end of the first connecting pipe 51 is connected to the cooling circuit 10, the outlet end of the first connecting pipe 51 is connected to the heating circuit 60, the first port of the first three-way valve 71 faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe 51.

[0115] The inlet end of the second connecting pipe 52 is connected to the heating circuit 60, and the outlet end of the second connecting pipe 52 is connected to the cooling circuit 10; the second three-way valve 72 is provided in the heating circuit 60, the first port of the second three-way valve 72 is connected to the first connecting pipe 51, the second port faces the inflow direction of the second liquid in the heating circuit 60, and the third port faces the outflow direction of the second liquid.

[0116] See Figure 6 As shown, after determining that the heating circuit 60 will perform the ion exchange step when the ambient temperature is greater than or equal to the preset temperature and the ambient humidity is greater than or equal to the preset humidity, the following steps are included:

[0117] In step S40, it is determined that the conductivity of both the heating circuit 60 and the cooling circuit 10 exceeds the standard. Therefore, the first three-way valve 71 and the second three-way valve 72 are both opened to ensure a continuous circulation between the cooling circuit 10 and the heating circuit 60. At this point, the cooling circuit 10 and the heating circuit 60 form a large, integrated loop, and the first ion exchanger 31 and the second ion exchanger 32 simultaneously perform ion exchange. This simultaneous deionization operation of both circuits results in higher efficiency.

[0118] See Figure 7As shown, to ensure vehicle safety, before the step of obtaining the conductivity of the heating circuit 60, the following steps are included:

[0119] Step S01: Determine that the vehicle is powered down, generate a wake-up signal, and collect conductivity data based on the wake-up signal. In other words, the fuel cell stack is not operational during deionization. If deionization is performed while the fuel cell stack is operational, it may damage the stack. For example, if the conductivity in the circuit exceeds the standard, and deionization is performed while the fuel cell stack is also operational, current may be generated in the circuit, potentially causing the stack to break down. Therefore, ensure the fuel cell stack is powered down during deionization.

[0120] See Figure 8 As shown, to more clearly illustrate the control method of the filtration system, the following example is provided:

[0121] Step S1: After the fuel cell is powered off, a wake-up signal is generated. The control unit is then activated based on the wake-up signal. The control unit transmits a detection signal to the detector and controls the detector to collect conductivity data.

[0122] Step S2: The detected conductivity of the heating circuit 60 is compared with the first threshold. When the conductivity of the heating circuit 60 is less than the first threshold, the control unit compares the conductivity of the cooling circuit 10 with the second threshold.

[0123] Step S3: When the conductivity of the heating circuit 60 is less than the first threshold and the conductivity of the cooling circuit 10 is greater than the second threshold, the second three-way valve 72 is closed to disconnect the heating circuit 60 and the cooling circuit 10. The first water pump 21 then operates to perform deionization in the cooling circuit 10.

[0124] Step S4: When the conductivity of the heating circuit 60 is less than the first threshold and the conductivity of the cooling circuit 10 is less than the second threshold, both conductivity values ​​meet the standard. The first ion exchanger 31 and the second ion exchanger 32 do not need to perform deionization, and the filtration system does not operate.

[0125] Step S5: When the conductivity of the heating circuit 60 is greater than the first threshold, the control unit compares the conductivity of the cooling circuit 10 with the second threshold.

[0126] Step S6: When the conductivity of the heating circuit 60 is greater than the first threshold and the conductivity of the cooling circuit 10 is greater than the second threshold, determine whether the heating circuit 60 can be turned on based on the ambient temperature and humidity of the filtration system.

[0127] Step S7: When the conductivity of the heating circuit 60 is greater than the first threshold and the conductivity of the cooling circuit 10 is greater than the second threshold, the ambient temperature is less than the preset temperature and the ambient humidity is less than the preset humidity, the heating circuit 60 cannot be opened, the second three-way valve 72 is closed, the cooling circuit 10 and the heating circuit 60 are disconnected, the first water pump 21 starts working, and the cooling circuit 10 performs deionization operation.

[0128] In step S8, when the conductivity of the heating circuit 60 is greater than the first threshold, and the conductivity of the cooling circuit 10 is greater than the second threshold, the ambient temperature is greater than the preset temperature, and the ambient humidity is greater than the preset humidity, the heating circuit 60 can be opened, the second three-way valve 72 opens, the cooling circuit 10 and the heating circuit 60 are connected, the first water pump 21 starts working, and the cooling circuit 10 and the heating circuit 60 simultaneously perform deionization operations. Alternatively, the first water pump 21 and the second water pump 22 can also work simultaneously at this time.

[0129] Step S9: When the conductivity of the heating circuit 60 is greater than the first threshold and the conductivity of the cooling circuit 10 is less than the second threshold, determine whether the heating circuit 60 can be turned on based on the ambient temperature and humidity of the filtration system.

[0130] In step S10, when the conductivity of the heating circuit 60 is greater than the first threshold and the conductivity of the cooling circuit 10 is less than the second threshold, the ambient temperature is less than the preset temperature and the ambient humidity is less than the preset humidity, the heating circuit 60 cannot be turned on and the filtration system is not operated.

[0131] In step S11, when the conductivity of the heating circuit 60 is greater than the first threshold and the conductivity of the cooling circuit 10 is less than the second threshold, the ambient temperature is greater than the preset temperature and the ambient humidity is greater than the preset humidity, the heating circuit 60 can be opened, the second three-way valve 72 is closed, the cooling circuit 10 and the heating circuit 60 are disconnected, the second water pump 22 starts working, and the heating circuit 60 performs deionization operation.

[0132] This application also provides a vehicle, which includes a frame and a filtration system as described above. The frame forms a support space, and the filtration system is disposed within the support space. The filtration system is disposed within the support space of the frame, and the frame can protect the filtration system. The filtration system includes a cooling circuit 10 and a heating circuit 60, wherein the cooling circuit 10 is used for cooling and the heating circuit 60 is used for heating.

[0133] The filtration system also includes a first water pump 21 and a first ion exchanger 31, both of which are located within the cooling circuit 10. Multiple water pipes are connected end-to-end within the cooling circuit 10 to form a loop, constituting a circulation. The first water pump 21 and the first ion exchanger 31 are positioned within this circulation loop. The first water pump 21 pumps the first liquid in the cooling circuit 10. When the first water pump 21 operates, it generates pumping pressure, causing the first liquid to begin flowing under this pressure. Figure 1 It can be seen that the first liquid flow direction 101 is in the cooling circuit 10.

[0134] The first ion exchanger 31 is used to filter ions in the first liquid. As the first liquid gradually flows, it passes through the first ion exchanger 31. When it is necessary to reduce the conductivity in the pipeline, the first ion exchanger 31 starts to work.

[0135] The filtration system also includes a second water pump 22 and a second ion exchanger 32, both of which are located within the heating circuit 60. The heating circuit 60 is also formed by multiple sections of water pipe connected end-to-end, creating a loop. The second water pump 22 and the second ion exchanger 32 are located within this loop. The second water pump 22 pumps the second liquid in the heating circuit 60. The second water pump 22 operates independently of the first water pump 21, ensuring sufficient pumping force for both the cooling circuit 10 and the heating circuit 60. The second ion exchanger 32 filters ions from the second liquid. The first ion exchanger 31 and the second ion exchanger 32 can filter ions using an exchange resin, where components in the resin react with the ions to remove them. Alternatively, they can use adsorption, where ions are adsorbed after passing through the ion exchanger. Figure 1 It can be seen that the second liquid flow direction 601 is in the heating circuit 60.

[0136] The first liquid and the second liquid can be the same type of liquid or different types of liquid. For example, one can be water, and the other can be a mixture of water and antifreeze. Alternatively, both can be water, or a mixture of water and antifreeze.

[0137] In this embodiment of the vehicle, a first ion exchanger 31 is installed in the cooling circuit 10. A first water pump 21 pumps a first liquid, allowing it to circulate in the cooling circuit 10. When the first liquid passes through the first ion exchanger 31, the first ion exchanger 31 can filter ions from the first liquid. Similarly, a second ion exchanger 32 is installed in the heating circuit 60. A second water pump 22 pumps a second liquid. When the second liquid passes through the second ion exchanger 32, the second ion exchanger 32 can filter ions from the second liquid. Thus, this technical solution, by installing ion exchangers in both the cooling circuit 10 and the heating circuit 60, reduces the conductivity in the pipelines, making the vehicle safer.

[0138] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since this application can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A filtration system, characterized in that, The filtration system is used in a vehicle, and the filtration system includes: Cooling circuit, the cooling circuit being used for cooling; A first ion exchanger is disposed in the cooling circuit and is used to filter ions in the cooling circuit. A heating circuit, wherein the heating circuit is used to raise the temperature, and the cooling circuit is circulated and connected to the heating circuit; A second ion exchanger is provided in the heating circuit and is used to filter ions in the heating circuit. A first water pump is located in the cooling circuit and is used to pump a first liquid in the cooling circuit. A high-temperature body is disposed in the cooling circuit, and the temperature of the high-temperature body is higher than the temperature of the first liquid. The cooling circuit is used to reduce the temperature of the high-temperature body. The first ion exchanger is disposed in the pipeline between the high-temperature body and the first water pump. A second water pump is installed in the heating circuit and is used to pump a second liquid in the heating circuit. The first connecting pipe has its inlet end connected to the cooling circuit and the connection point is located in the pipeline flowing through the high-temperature body. The outlet end of the first connecting pipe is connected to the heating circuit. The second connecting pipe has its inlet end connected to the heating circuit and its outlet end connected to the cooling circuit.

2. The filtration system according to claim 1, characterized in that, The filtration system also includes a radiator, one end of which is connected to the first connecting pipe and the other end of which is connected to the second connecting pipe.

3. The filtration system according to claim 1, characterized in that, The filtration system further includes a first three-way valve, which is located in the pipeline of the cooling circuit through which the high-temperature body flows. The first port of the first three-way valve faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe.

4. The filtration system according to claim 1, characterized in that, The filtration system also includes a second three-way valve, which is located in the heating circuit. The first port of the second three-way valve is connected to the first connecting pipe, the second port faces the inflow direction of the second liquid in the heating circuit, and the third port faces the outflow direction of the second liquid. The second three-way valve is located in the outlet direction of the second water pump, and the second ion exchanger is located in the pipeline between the second water pump and the second three-way valve.

5. The filtration system according to claim 4, characterized in that, The filtration system also includes a heater and a warm air core, both of which are located in the heating circuit. The heater is located in the pipeline between the third port of the second three-way valve and the warm air core, and the warm air core is used to heat the passenger space of the vehicle. The high-temperature body is a fuel cell stack or an engine.

6. The filtration system according to claim 1, characterized in that, The inlet end of the second connecting pipe is connected to the second water pump, and the outlet end of the second connecting pipe is connected to the first water pump; The high-temperature body is located in the pipeline in the outlet direction of the first water pump, and the first ion exchanger is located in the pipeline between the high-temperature body and the first water pump.

7. The filtration system according to any one of claims 2 to 6, characterized in that, The filtration system further includes: a first water tank and a second water tank, wherein the first water tank is connected to the first water pump and the second water tank is connected to the second water pump; The first water tank and the second water tank are shared water tanks, or the first water tank and the second water tank are independent water tanks.

8. A control method for a filtration system, characterized in that, The control method is used in the filtration system as described in claim 1, the control method comprising: The conductivity of the heating circuit is obtained, and the first ion exchanger is controlled to perform ion exchange based on the conductivity of the heating circuit. The conductivity of the cooling circuit is obtained, and the second ion exchanger is controlled to perform ion exchange based on the conductivity of the cooling circuit.

9. The control method for the filtration system according to claim 8, characterized in that, The step of obtaining the conductivity of the heating circuit and controlling the first ion exchanger to perform ion exchange based on the conductivity of the heating circuit includes: Obtain the electrical conductivity of the heating circuit and compare it with a preset first threshold. When the conductivity of the heating circuit is greater than or equal to the first threshold, the first ion exchanger is controlled to perform ion exchange. When the conductivity of the heating circuit is less than the first threshold, the first ion exchanger is controlled to stop ion exchange.

10. The control method for the filtration system according to claim 8, characterized in that, The step of obtaining the conductivity of the cooling circuit and controlling the second ion exchanger to perform ion exchange based on the conductivity of the cooling circuit includes: The conductivity of the cooling circuit is obtained, and the conductivity of the cooling circuit is compared with a preset second threshold. When the conductivity of the cooling circuit is greater than or equal to the second threshold, the second ion exchanger is controlled to perform ion exchange. When the conductivity of the cooling circuit is less than the second threshold, the second ion exchanger is controlled to stop ion exchange.

11. The control method for the filtration system according to claim 8, characterized in that, Prior to the step of controlling the first ion exchanger to perform ion exchange, the following steps are included: Obtain the ambient temperature and humidity of the filtration system. When the ambient temperature is lower than the preset temperature and the ambient humidity is lower than the preset humidity, it is determined that the heating circuit is prohibited from performing the ion exchange step. When the ambient temperature is greater than or equal to a preset temperature and the ambient humidity is greater than or equal to a preset humidity, the heating circuit is determined to perform an ion exchange step.

12. The control method for the filtration system according to claim 11, characterized in that, The filtration system further includes: a first connecting pipe, a first three-way valve, a second connecting pipe, and a second three-way valve. The inlet end of the first connecting pipe is connected to the cooling circuit, and the outlet end of the first connecting pipe is connected to the heating circuit. The first port of the first three-way valve faces the inflow direction of the first liquid, the second port faces the outflow direction of the first liquid, and the third port is connected to the first connecting pipe. The inlet end of the second connecting pipe is connected to the heating circuit, and the outlet end of the second connecting pipe is connected to the cooling circuit; the second three-way valve is located in the heating circuit, the first port of the second three-way valve is connected to the first connecting pipe, the second port faces the inflow direction of the second liquid in the heating circuit, and the third port faces the outflow direction of the second liquid; When the ambient temperature is greater than or equal to a preset temperature and the ambient humidity is greater than or equal to a preset humidity, after determining that the heating circuit will perform an ion exchange step, the following steps are included: If the conductivity of both the heating circuit and the cooling circuit exceeds the standard, control both the first three-way valve and the second three-way valve to open, so that the cooling circuit and the heating circuit are circulated and connected.

13. The control method for the filtration system according to claim 8, characterized in that, Before the step of obtaining the conductivity of the heating circuit, the following steps are included: Once the vehicle is powered off, a wake-up signal is generated, and conductivity is collected based on the wake-up signal.

14. A vehicle, characterized in that, The vehicle includes a frame and a filtration system as described in any one of claims 1 to 7, the frame forming a support space, and the filtration system disposed within the support space.

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