CN212219968U - Heating system - Google Patents
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- CN212219968U CN212219968U CN202020049067.5U CN202020049067U CN212219968U CN 212219968 U CN212219968 U CN 212219968U CN 202020049067 U CN202020049067 U CN 202020049067U CN 212219968 U CN212219968 U CN 212219968U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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Abstract
The embodiment of the utility model discloses a heating system, which comprises a vehicle-mounted heating system communicated with a vehicle-mounted alloy hydrogen storage device, and a first interface and a second interface communicated with the vehicle-mounted heating system; the vehicle-mounted heating system comprises a first heater and a first circulating liquid pump which are connected through a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the third pipeline is positioned in the alloy hydrogen storage device and is used for communicating the liquid inlet end and the liquid outlet end of the alloy hydrogen storage device; the first interface is positioned on the first pipeline, and the second interface is positioned on the second pipeline; the first interface and the second interface are used for circularly heating the alloy hydrogen storage device through an external heating system. In the embodiment of the utility model, the requirements of different working states of the alloy hydrogen storage device are met through the flexible switching of different temperature control systems; through reasonable arrangement of the flow sensor, the temperature sensor and the like, the alloy hydrogen storage device is constantly maintained at a higher temperature in the hydrogen discharge process, and the user experience is improved.
Description
Technical Field
The utility model relates to a traffic field especially relates to a heating system.
Background
Hydrogen is used as an energy source material with low energy consumption, low pollution and high energy efficiency, is widely applied to energy source power equipment, and at the present stage, partial automobiles, steamships, airplanes and the like adopt hydrogen as fuel energy. At present, the relatively efficient and safe hydrogen storage technology is alloy hydrogen storage, an alloy hydrogen storage device is a device for storing and releasing hydrogen, and hydrogen storage alloy is arranged in a container inside the device. The alloy hydrogen storage technology is that under certain temperature and pressure, metal reacts with hydrogen to absorb hydrogen and generate metal hydride, thereby fixing and storing the hydrogen; the reaction is very reversible. In the hydrogen discharging process of the hydrogen storage alloy, as the temperature in the system rises, hydride (beta phase) begins to be converted into hydrogen-containing solid solution (alpha phase), and when the alpha phase and the beta phase coexist, the system pressure basically keeps unchanged; when all the beta phase changes to alpha phase, hydrogen will be released rapidly in the device. The higher the reaction temperature, the shorter the time required for the beta phase to transform into the alpha phase, and the faster the hydrogen gas can be released. The hydrogen absorption and desorption process of the metal hydride is accompanied by great heat exchange, and the temperature is sharply increased during hydrogen absorption and sharply decreased during hydrogen desorption.
Therefore, when the hydrogen storage alloy is used for hydrogen release, in order to ensure that the device continuously, rapidly, stably and safely releases hydrogen, a heating system needs to be arranged for the device, so that the alloy hydrogen storage device is constantly maintained at a higher appropriate temperature in the hydrogen release process, and simultaneously, the flexible switching among different systems can be flexibly carried out by better matching with different working state requirements of the alloy hydrogen storage device.
SUMMERY OF THE UTILITY MODEL
The application provides a heating system, makes alloy hydrogen storage device constantly maintain at higher suitable temperature in the hydrogen process of putting out, can cooperate the nimble switching of different intersystem of the different operating condition demands of alloy hydrogen storage device in a flexible way of going on better simultaneously.
The heating system comprises a vehicle-mounted heating system communicated with a vehicle-mounted alloy hydrogen storage device, and a first interface and a second interface which are communicated with the vehicle-mounted heating system;
the vehicle-mounted heating system comprises a first heater connected with the liquid inlet end of the alloy hydrogen storage device through a first pipeline and a first circulating liquid pump connected with the liquid outlet end of the alloy hydrogen storage device through a second pipeline; the liquid inlet end of the alloy hydrogen storage device is communicated with the liquid outlet end of the alloy hydrogen storage device through a third pipeline positioned in the alloy hydrogen storage device; the first heater is communicated with the first circulating liquid pump through a fourth pipeline;
the first interface is positioned on the first pipeline, and the second interface is positioned on the second pipeline;
the first interface is used for being connected with a third interface of an external heating system; the second interface is used for being connected with a fourth interface of the external heating system; the first interface and the second interface are used for circularly heating the alloy hydrogen storage device through the external heating system.
In an alternative embodiment, the on-board heating system further includes a heat exchanger between the first heater and the first circulating liquid pump; the heat exchanger is used for exchanging heat released by a fuel cell system on board the vehicle into the heating system on board the vehicle.
In an alternative embodiment, the on-board heating system further comprises an expansion tank; the first end of the expansion water tank is communicated with the third pipeline through a fifth pipeline; the second end of the expansion water tank is communicated with the first circulating liquid pump through a sixth pipeline;
the third end of the expansion water tank discharges air or circulating liquid through a fifth interface;
and a first switching device is arranged on the fifth pipeline.
In an optional embodiment, the first interface is further configured to connect to a sixth interface of an external cooling system; the second interface is also used for being connected with a seventh interface of the external cooling system; the first interface and the second interface are also used for carrying out circulating cooling on the alloy hydrogen storage device through the external cooling system.
In an optional embodiment, the on-board heating system further comprises a second switching device located on the first conduit and a third switching device located on the second conduit.
In an alternative embodiment, the on-board heating system further comprises a controller;
the controller is connected with a first temperature sensor arranged on the alloy hydrogen storage device;
the controller is used for controlling the switching states of the first switching device, the second switching device and the third switching device according to the temperature detected by the first temperature sensor.
In an optional embodiment, the controller is further connected with a second temperature sensor arranged at the liquid inlet end of the alloy hydrogen storage device and a third temperature sensor arranged at the liquid outlet end of the alloy hydrogen storage device;
the controller is further configured to:
adjusting the working rotating speed of the first circulating liquid pump according to the received temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor; and/or adjusting the operating temperature of the first heater.
In an optional embodiment, the external heating system comprises a second circulating liquid pump, a second heater and an over-temperature protection device, which are arranged between the third interface and the fourth interface;
the controller is further used for adjusting the working rotating speed of the second circulating liquid pump according to the received temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor; and/or adjusting the operating temperature of the second heater.
In an alternative embodiment, the controller is also connected with a flow sensor arranged at the liquid inlet end of the alloy hydrogen storage device;
the controller is further configured to: when the heating system is operated, if the flow of the flow sensor is detected to be lower than a first threshold value, the heating system is controlled to stop operating.
In an alternative embodiment, the alloy hydrogen storage unit comprises a plurality of alloy hydrogen storage bottles; the plurality of alloy hydrogen storage bottles are connected in parallel with the first pipeline and the second pipeline.
In an optional embodiment, the vehicle-mounted heating system further includes an eighth interface, and the eighth interface is used for inputting or outputting the circulating liquid to the vehicle-mounted heating system.
In an alternative embodiment, the on-board heating system further comprises a filter device.
In the above embodiments of the present invention, the heating system includes a vehicle-mounted heating system communicated with the vehicle-mounted alloy hydrogen storage device, and a first interface and a second interface communicated with the vehicle-mounted heating system; the vehicle-mounted heating system comprises a first heater and a first circulating liquid pump which are connected through a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the third pipeline is positioned in the alloy hydrogen storage device and is used for communicating the liquid inlet end and the liquid outlet end of the alloy hydrogen storage device; the first interface is positioned on the first pipeline, and the second interface is positioned on the second pipeline; the first interface is used for being connected with a third interface of an external heating system; the second interface is used for being connected with a fourth interface of an external heating system; the first interface and the second interface are used for circularly heating the alloy hydrogen storage device through the external heating system. In the embodiment of the utility model, the flexible switching of different temperature control systems can meet the different working state requirements of the alloy hydrogen storage device under different temperature environments; through reasonable arrangement of the flow sensor, the temperature sensor and the like, the alloy hydrogen storage device is constantly maintained at a higher temperature in the hydrogen discharge process, the safety of the system is enhanced, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.
Fig. 1 is a schematic view of a possible heating system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a possible heating system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Fig. 1 is a schematic diagram of a possible heating system according to the present disclosure, as shown in fig. 1, the heating system may include an on-board heating system in communication with an on-board alloy hydrogen storage device 110, and a first interface 210 and a second interface 211 in communication with the on-board heating system; the vehicle-mounted heating system can comprise a first heater 111 connected with the liquid inlet end of the alloy hydrogen storage device 110 through a first pipeline a1, and a first circulating liquid pump 112 connected with the liquid outlet end of the alloy hydrogen storage device 110 through a second pipeline a2, wherein the first circulating liquid pump 112 is used for providing circulating power for circulating liquid in the vehicle-mounted heating system; the liquid inlet end of the alloy hydrogen storage device 110 is communicated with the liquid outlet end of the alloy hydrogen storage device 110 through a third pipeline (not shown in the figure) positioned in the alloy hydrogen storage device 110; the first heater 111 and the first circulating liquid pump 112 are communicated through a fourth pipe a 3; the first interface 210 may be located on the first pipe a1, and the second interface 211 may be located on the second pipe a 2; the first interface 210 is used for connecting with a third interface 212 of an external heating system; the second interface 211 is used for connecting with a fourth interface 213 of the external heating system; the first interface 210 and the second interface 211 are used for cyclic heating of the alloy hydrogen storage device 110 by an external heating system. The third pipeline may adopt different arrangement modes according to different types of alloy hydrogen storage devices 110, the third pipeline may be distributed along the inner wall of the alloy hydrogen storage device 110, may be distributed along a container containing hydrogen storage alloy in the alloy hydrogen storage device 110, or may be placed in the third pipeline, and the outer wall of the container is in direct contact with circulating liquid in the third pipeline, which is not limited specifically; preferably, a container containing hydrogen storage alloy in the alloy hydrogen storage device 110 may be placed in the third conduit. The material, shape and size of the third pipeline can be selected according to actual conditions, and are not particularly limited. Preferably, the liquid inlet end of the alloy hydrogen storage device 110 is positioned at the upper part of the liquid outlet end of the alloy hydrogen storage device 110. The type of the circulating liquid is not limited, and heat conduction can be realized; meanwhile, the material of the pipeline has different choices due to different circulating fluids and practical application vehicles, and the material is not described again.
Further, the on-vehicle heating system may further include a heat exchanger 113 between the first heater 111 and the first circulating liquid pump 112. The heat generated by the reaction of the on-vehicle hydrogen fuel cell can heat the circulating liquid in the on-vehicle heating system by the heat exchanger 113, thereby realizing the recycling of energy. Preferably, the heat exchanger 113 may be provided on the fourth pipe a 3. The hydrogen discharge of the alloy hydrogen storage device 110 is matched with the reaction of the hydrogen fuel cell, the heat exchanger 113 is matched with the first heater 111 for use, and under the action of the first circulating liquid pump 112, the circulating liquid is heated in the heat exchanger 113 and then enters the first heater 111 for secondary heating, so that the power requirement on the first heater 111 can be reduced.
Further, the vehicle-mounted heating system may further include an expansion water tank 114, the expansion water tank 114 may be communicated with the third pipeline through a fifth pipeline a4, and the fifth pipeline a4 may be provided with the first switching device 120; the expansion tank 114 may communicate with the first circulating liquid pump 112 through a sixth pipe a 5. The expansion tank 114 may be provided with a fifth port 214, and the fifth port 214 may be used for discharging excess air or circulating liquid in the expansion tank 114, so as to ensure a constant pressure in the vehicle-mounted heating system.
In specific implementation, the circulating liquid enters the third pipeline through the fourth pipeline a3 and the first pipeline a1 under the action of the first circulating liquid pump 112; a part of the circulating liquid entering the third pipeline flows back to the first circulating liquid pump 112 through the second pipeline a2, and the other part flows back to the first circulating liquid pump 112 through the fifth pipeline a4, the expansion water tank 114 and the sixth pipeline a 5; a small amount of air may be brought into the circulating liquid when the vehicle-mounted heating system is connected with an external system through the first interface 210 and the second interface 211, so that air bubbles are formed; if the air is not discharged, the air in the heating system is gradually increased along with the use of the device, which is not beneficial to the safe and efficient operation of the heating system; if the circulating liquid is filled from the outside and is emptied, the cost is too high; preferably, the expansion tank 114 may be disposed at the highest position of the entire heating system in the vertical height, so that the air in the circulation liquid may be separated by passing the circulation liquid through the expansion tank 114, thereby reducing the influence of the air on the heat transfer efficiency.
Fig. 2 is a schematic diagram of a possible heating system structure provided by the present application, in an embodiment of the present invention, the first interface 210 may further be connected to a sixth interface 215 of an external cooling system; the second interface 211 may further be connected to a seventh interface 216 of an external cooling system, the first interface 210 and the second interface 211 may further be configured to perform circulating cooling on the alloy hydrogen storage device 110 through the external cooling device 410, and the external cooling device 410 may provide a cooling circulating liquid, which does not affect the effect to be achieved by the present application, and is not particularly limited. The on-board heating system may further include a second switching device 121 located on the first pipe a1, a third switching device 122 located on the second pipe a2, and a controller (not shown in the figure), the controller may be connected to a first temperature sensor 130 disposed on the alloy hydrogen storage device 110, and the first temperature sensor 130 may be used to measure the temperature inside the alloy hydrogen storage device 110. The second switching device 121 and the third switching device 122 may be configured to: when the first interface 210 and the second interface 211 are connected with an external system, the first heater 111, the first circulating liquid pump 112 and the fourth pipeline a3 in the vehicle-mounted heating system are disconnected from the third pipeline, the first interface 210 and the second interface 211 in the alloy hydrogen storage device 110 under the action of the controller, so that the cost is reduced, the pipeline arrangement in the vehicle is simplified, and the utilization rate of the pipelines is improved. When the first connector 210 and the second connector 211 are connected to an external heating system or an external cooling system, the controller may control the first switching device 120 to be turned off to prevent a sudden rise in pressure in the system caused by an excessive power of the external circulation pump from possibly causing the circulation fluid to be pressed out of the expansion tank. The type, number and location of the controllers on the vehicle do not substantially affect the operation of the controllers, and are not particularly limited.
In one possible implementation, in a low-temperature environment, hydrogen in the alloy hydrogen storage device 110 is adsorbed in the alloy, the pressure of hydrogen in the device is lower than the pressure required for the operation of the fuel cell, the flow rate of hydrogen supplied cannot meet the operation requirement of the fuel cell, and the fuel cell cannot be started. Although the on-board heating system can heat the alloy hydrogen storage device 110, the first heater 111 has a smaller power and a longer start-up time, and the user experience is poor. Therefore, in order to realize rapid starting operation of the vehicle in cold regions, at low temperature and low hydrogen system pressure, the first interface 210 and the second interface 211 can be respectively connected with the third interface 212 and the fourth interface 213 of the external heating system. The external heating system may include a second circulation fluid pump 311, a second heater 310, and an over-temperature protection device 312; preferably, the second circulation fluid pump 311 and the second heater 310 are higher in power than the first circulation fluid pump 112 and the first heater 111; in order to avoid the overhigh working temperature of the alloy hydrogen storage device caused by the external heating system and ensure the safety of the system, the second heater 310 is controlled to stop heating by arranging the over-temperature protection device 312 when the temperature of the circulating liquid in the external heating system is higher than the set value of the over-temperature protection device 312; the over-temperature protection device 312 is set according to the reaction temperature of different alloy hydrogen storage devices, and is not limited specifically. The alloy storage device 110 is circularly heated through the second heater 310 and the second circulating liquid pump 311, so that the pressure of the hydrogen system and the hydrogen supply flow are improved, and the alloy hydrogen storage device 110 can release proper hydrogen for starting the fuel cell; after the fuel cell can be started, the first interface 210 and the third interface 212 can be disconnected, the second interface 211 and the fourth interface 213 can be disconnected, the first switching device 121 and the second switching device 122 are closed, and the alloy hydrogen storage device 110 is heated by the vehicle-mounted heating system, so that the alloy hydrogen storage device 110 can continuously release hydrogen.
In one example, when the alloy hydrogen storage device 110 needs to discharge hydrogen, if the temperature detected by the first temperature sensor 130 is lower than the second threshold, the controller may control the first switching device 120, the second switching device 121, and the third switching device 122 to disconnect, connect the first interface 210 and the third interface 212, connect the second interface 211 and the fourth interface 213, and operate the external heating system; if the temperature detected by the first temperature sensor 130 is higher than the second threshold and lower than the third threshold, controlling the first switching device 120, the second switching device 121 and the third switching device 122 to be closed, and operating the vehicle-mounted heating system; when the alloy hydrogen storage device 110 needs to be charged with hydrogen, if the temperature detected by the first temperature sensor 130 is higher than the fourth threshold value, the first switching device 120, the second switching device 121 and the third switching device 122 are controlled to be disconnected, the first interface 210 and the sixth interface 215 are connected, the second interface 211 and the seventh interface 216 are connected, and the external cooling system is operated. The second threshold value is the critical temperature of the external heating system required by the hydrogen discharge reaction of the alloy hydrogen storage device 110 in the low-temperature environment; the third threshold is the lowest temperature at which the hydrogen discharge reaction of the alloy hydrogen storage device 110 can be stably performed; the fourth threshold is the acceptable highest temperature of the hydrogen charging reaction of the alloy hydrogen storage device 110, and the specific threshold amount will vary according to different alloy materials, the number of alloy hydrogen storage bottles, the type of circulating liquid, etc. The connection between the first port 210 and the third port 212, the connection between the second port 211 and the fourth port 213, the connection between the first port 210 and the sixth port 215, and the connection between the second port 211 and the seventh port 216 may be any device that can be easily inserted and removed and can cut off the cooling liquid on both sides while being disconnected. Preferably, the first interface 210, the second interface 211, the third interface 212, the fourth interface 213, the sixth interface 215, and the seventh interface 216 may be connected by a hydraulic quick connector, and the hydraulic quick connector is divided into a male end and a female end, which can realize quick plugging and unplugging, so as to meet timeliness and convenience of operation. Preferably, the second switching device 121 may be composed of a check valve 1211 and a first solenoid valve 1212, and the third switching device 122 may be composed of a hand valve 1221 and a second solenoid valve 1222. In order to prevent the situation that the solenoid valve may not be closed when the system back pressure is large, and the circulating liquid still passes through the solenoid valve, therefore, the hand valve 1221 and the check valve 1211 will play a role of protecting the solenoid valve by using the check valve 1211 in cooperation with the first solenoid valve 1212, the hand valve 1221 and the second solenoid valve 1222, and the check valve 1211 can also effectively control the flow direction of the circulating liquid.
In the embodiment of the present invention, the liquid inlet end of the alloy hydrogen storage device 110 may be provided with a second temperature sensor 131, and the liquid outlet end of the alloy hydrogen storage device 110 may be provided with a third temperature sensor 132. The controller can also be connected with the second temperature sensor 131 and the third temperature sensor 132, and adjusts the working speed of the first circulating liquid pump 112 and/or the working temperature of the first heater 111 by receiving the temperature in the alloy hydrogen storage device 110 measured by the first temperature sensor 130, the temperature at the liquid inlet end of the alloy hydrogen storage device 110 measured by the second temperature sensor 131 and the temperature at the liquid outlet end of the alloy hydrogen storage device 110 measured by the third temperature sensor 132, so that the alloy hydrogen storage device 110 is at the suitable temperature for reaction. When the external heating system works, the controller can also adjust the working speed of the second circulating liquid pump 311 and/or the working temperature of the second heater 310 by receiving the temperature in the alloy hydrogen storage device 110 measured by the first temperature sensor 130, the temperature at the liquid inlet end of the alloy hydrogen storage device 110 measured by the second temperature sensor 131 and the temperature at the liquid outlet end of the alloy hydrogen storage device 110 measured by the third temperature sensor 132. Temperature sensors are respectively arranged at the liquid inlet end, the liquid outlet end and the device of the alloy hydrogen storage device 110, compared with the temperature sensor arranged only in the device or at the liquid inlet end or the liquid outlet end, the temperature of the circulating liquid flowing through the alloy hydrogen storage device 110 can be monitored more comprehensively, the temperature of the hydrogen discharge reaction of the alloy hydrogen storage device 110 is further stably maintained, and the rapid and stable hydrogen discharge is realized; meanwhile, potential safety hazards caused by over-high or over-low local temperature in the hydrogen discharging process of the alloy hydrogen storage device 110 can be prevented.
In the embodiment of the present invention, a flow sensor 140 may be disposed on the liquid inlet end of the alloy hydrogen storage device 110. In one implementation, the first flow sensor 140 can be used to measure the flow rate of the recycle stream at the inlet end of the alloy hydrogen storage device 110. The controller may also be coupled to the first flow sensor 140. In specific implementation, it is required to determine whether the circulation liquid of the entire system effectively flows, that is, whether the flow rate of the circulation liquid flowing through the first flow sensor 140 is higher than a first threshold, where the first threshold is a minimum flow rate at which the circulation liquid can effectively and quickly achieve heat exchange of the vehicle-mounted heating system. The controller may stop operation of the control system when the measured circulating fluid flow of the first flow sensor 140 is below a first threshold.
In one example, when the first flow sensor 140 detects that the flow rate of the circulating liquid per unit time is higher than a first threshold value, the effective flow of the circulating liquid in the heating system is judged, and a circulating liquid effective flow signal is output to the controller; the first flow sensor 140 may also detect that the flow rate of the circulating liquid in the unit time of the circulating liquid is lower than a first threshold, determine that the circulating liquid does not effectively flow, and output a signal that the circulating liquid does not effectively flow to the controller; the controller receives the signal that the circulating liquid does not effectively flow, judges that the vehicle-mounted heating system possibly breaks down, can stop the operation of the system, and can be overhauled by a user.
In embodiments of the present invention, the alloy hydrogen storage device 110 may include a plurality of alloy hydrogen storage bottles; a plurality of alloy hydrogen storage bottles may be connected in parallel with the first conduit a1 and the second conduit a 2. As shown in FIG. 2, two alloy hydrogen storage bottles are connected in parallel as an example. First conduit a1 may be connected to first tee 160; the first end of the first tee fitting 160 can be connected with the liquid inlet end of the first alloy hydrogen storage bottle 1101 through a first sub-pipeline a 11; the second end of the first tee fitting 160 may be connected to the inlet end of a second alloy hydrogen storage bottle 1102 via a second sub-conduit a 12. Second conduit a2 may be connected to second tee fitting 161; the first end of the second tee pipe 161 can be connected with the liquid outlet end of the first alloy hydrogen storage bottle 1101 through a third sub-pipeline a 21; the second end of the second tee pipe 161 can be connected with the liquid outlet end of the second alloy hydrogen storage bottle 1102 through a fourth sub-pipe a 22; the first sub-pipeline a11 is connected with the third sub-pipeline a21 through a fifth sub-pipeline (not shown in the figure) positioned in the first alloy hydrogen storage bottle 1101; the second sub-pipe a12 is connected to the fourth sub-pipe a22 via a sixth sub-pipe (not shown) located within the second alloy hydrogen storage bottle 1102. The first sub-pipe a11 may be provided with a first sub-flow sensor 1401 thereon; a second sub-flow sensor 1402 may be provided on the second sub-pipe a 12. A first sub-temperature sensor 1301 may be disposed in the first alloy hydrogen storage cylinder 1101, and a second sub-temperature sensor 1302 may be disposed in the second alloy hydrogen storage cylinder 1102. The fifth sub-pipe may be connected to third tee 162 via seventh sub-pipe a41, the sixth sub-pipe may be connected to third tee 162 via eighth sub-pipe a42, and third tee 162 may be disposed on fifth pipe a 4.
In a specific implementation, the circulating liquid in the first pipeline a1 flows into the first sub-pipeline a11 and the second sub-pipeline a12 after passing through the first tee joint 160, a part of the circulating liquid flowing through the first sub-pipeline a11 sequentially passes through the fifth sub-pipeline and the third sub-pipeline a21, and merges with the circulating liquid sequentially passing through the second sub-pipeline a12, the sixth sub-pipeline and the fourth sub-pipeline a22 in the second tee joint 161 to enter the second pipeline a 2; another part of the circulating liquid flowing through the first sub-pipe a11 is merged into the fifth pipe a4 in the third tee pipe 162 through the fifth sub-pipe, the seventh sub-pipe a41 in order and the circulating liquid flowing through the second sub-pipe a12, the sixth sub-pipe and the eighth sub-pipe a42 in order. Preferably, the pipe diameters of the first sub-pipe a11, the second sub-pipe a12, the third sub-pipe a21, the fourth sub-pipe a22, the fifth sub-pipe, the sixth sub-pipe, the seventh sub-pipe a41 and the eighth sub-pipe a42 are kept consistent, so that the flow rates in the branches after parallel connection are equal, and the same heating effect of the first alloy hydrogen storage bottle 1101 and the second alloy hydrogen storage bottle 1102 is realized.
Further, the eighth interface 217 may be used for filling the circulating liquid of the system after the vehicle-mounted heating system is first assembled or maintained and repaired, or may be used for discharging the circulating liquid in the system before the heating system needs to be maintained and repaired; the specific location of the eighth interface 217 in the heating system does not affect the achievable functions thereof, and is not limited in particular. Preferably, the eighth interface 217 may be arranged at the bottom of the heating system, facilitating the discharge of the circulating liquid; when the circulating liquid is filled into the heating system, the circulating liquid can be better emptied if entering the system from bottom to top.
Further, the heating system may further include a filtering device 150 for filtering impurities in the circulating liquid. When the heating system is maintained, the filter device 150 can be taken out for cleaning or replacing to be connected to the water channel in order to ensure the quality of the circulating liquid. In order to avoid emptying the circulating liquid in the system for each maintenance or repair, the filtering device 150 may be preferably arranged between the hand valve 1221 and the second electromagnetic valve 1222, and when the filter element in the filtering device (150) needs to be taken out for cleaning or repair, the hand valve 1221 and the second electromagnetic valve 1222 can be disconnected without emptying the circulating liquid in the system, so that the maintenance efficiency is improved, and the use cost of the vehicle-mounted heating system is reduced.
In the above embodiments of the present invention, the heating system includes a vehicle-mounted heating system communicated with the vehicle-mounted alloy hydrogen storage device, and a first interface and a second interface communicated with the vehicle-mounted heating system; the vehicle-mounted heating system comprises a first heater and a first circulating liquid pump which are connected through a first pipeline, a second pipeline, a third pipeline and a fourth pipeline, wherein the third pipeline is positioned in the alloy hydrogen storage device and is used for communicating the liquid inlet end and the liquid outlet end of the alloy hydrogen storage device; the first interface is positioned on the first pipeline, and the second interface is positioned on the second pipeline; the first interface is used for being connected with a third interface of an external heating system; the second interface is used for being connected with a fourth interface of an external heating system; the first interface and the second interface are used for circularly heating the alloy hydrogen storage device through the external heating system. In the embodiment of the utility model, the flexible switching of different temperature control systems can meet the different working state requirements of the alloy hydrogen storage device under different temperature environments; through reasonable arrangement of the flow sensor, the temperature sensor and the like, the alloy hydrogen storage device is constantly maintained at a higher temperature in the hydrogen discharge process, the safety of the system is enhanced, and the user experience is improved.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. A heating system is characterized by comprising a vehicle-mounted heating system communicated with a vehicle-mounted alloy hydrogen storage device, and a first interface and a second interface which are communicated with the vehicle-mounted heating system;
the vehicle-mounted heating system comprises a first heater connected with the liquid inlet end of the alloy hydrogen storage device through a first pipeline and a first circulating liquid pump connected with the liquid outlet end of the alloy hydrogen storage device through a second pipeline; the liquid inlet end of the alloy hydrogen storage device is communicated with the liquid outlet end of the alloy hydrogen storage device through a third pipeline positioned in the alloy hydrogen storage device; the first heater is communicated with the first circulating liquid pump through a fourth pipeline;
the first interface is positioned on the first pipeline, and the second interface is positioned on the second pipeline;
the first interface is used for being connected with a third interface of an external heating system; the second interface is used for being connected with a fourth interface of the external heating system; the first interface and the second interface are used for circularly heating the alloy hydrogen storage device through the external heating system.
2. The heating system of claim 1, further comprising a heat exchanger between the first heater and the first circulating liquid pump; the heat exchanger is used for exchanging heat released by a fuel cell system on board the vehicle into the heating system on board the vehicle.
3. The heating system of claim 1, wherein the on-board heating system further comprises an expansion tank; the first end of the expansion water tank is communicated with the third pipeline through a fifth pipeline; the second end of the expansion water tank is communicated with the first circulating liquid pump through a sixth pipeline;
the third end of the expansion water tank discharges air or circulating liquid through a fifth interface;
and a first switching device is arranged on the fifth pipeline.
4. The heating system of any one of claims 1 to 3, wherein the first interface is further configured to connect to a sixth interface of an off-board cooling system; the second interface is also used for being connected with a seventh interface of the external cooling system; the first interface and the second interface are also used for carrying out circulating cooling on the alloy hydrogen storage device through the external cooling system.
5. The heating system of claim 4, further comprising a second switching device on the first conduit and a third switching device on the second conduit.
6. The heating system of claim 5, wherein the onboard heating system further comprises a controller;
the controller is connected with a first temperature sensor arranged on the alloy hydrogen storage device;
the controller is used for controlling the switching states of the first switching device, the second switching device and the third switching device according to the temperature detected by the first temperature sensor.
7. The heating system of claim 6, wherein the controller is further connected to a second temperature sensor disposed at a liquid inlet end of the alloy hydrogen storage device and a third temperature sensor disposed at a liquid outlet end of the alloy hydrogen storage device;
the controller is further configured to:
adjusting the working rotating speed of the first circulating liquid pump according to the received temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor; and/or adjusting the operating temperature of the first heater.
8. The heating system of claim 7, wherein the offboard heating system comprises a second circulating liquid pump, a second heater and an over-temperature protection device disposed between the third interface and the fourth interface;
the controller is further used for adjusting the working rotating speed of the second circulating liquid pump according to the received temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor; and/or adjusting the operating temperature of the second heater.
9. The heating system of claim 8, wherein the controller is further connected to a flow sensor disposed at an inlet end of the alloy hydrogen storage device;
the controller is further configured to: when the heating system is operated, if the flow of the flow sensor is detected to be lower than a first threshold value, the heating system is controlled to stop operating.
10. The heating system of claim 9, wherein the alloy hydrogen storage device comprises a plurality of alloy hydrogen storage bottles; the plurality of alloy hydrogen storage bottles are connected in parallel with the first pipeline and the second pipeline.
11. The heating system of claim 4, further comprising an eighth interface for inputting or outputting circulating fluid to the onboard heating system.
12. The heating system of claim 5, wherein the onboard heating system further comprises a filtering device.
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| CN202020049067.5U CN212219968U (en) | 2020-01-10 | 2020-01-10 | Heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049067.5U CN212219968U (en) | 2020-01-10 | 2020-01-10 | Heating system |
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| CN212219968U true CN212219968U (en) | 2020-12-25 |
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