CN220692068U - Thermal management system of fuel cell and fuel cell vehicle - Google Patents
Thermal management system of fuel cell and fuel cell vehicle Download PDFInfo
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- CN220692068U CN220692068U CN202322310084.6U CN202322310084U CN220692068U CN 220692068 U CN220692068 U CN 220692068U CN 202322310084 U CN202322310084 U CN 202322310084U CN 220692068 U CN220692068 U CN 220692068U
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- 239000000446 fuel Substances 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000002826 coolant Substances 0.000 claims abstract description 17
- 230000017525 heat dissipation Effects 0.000 claims description 45
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 abstract description 25
- 239000000110 cooling liquid Substances 0.000 abstract description 13
- 150000002500 ions Chemical class 0.000 abstract description 11
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Abstract
The application discloses fuel cell's thermal management system and fuel cell car, the system includes pile cooling circuit and auxiliary cooling circuit, when using, make the first end and the third end of first valve member switch on, make the second end of first valve member close, make the second end and the third end of second valve member switch on, make the first end of second valve member close, make the third valve member close, make the fourth valve member close, start low-voltage auxiliary water pump, under low-voltage auxiliary water pump's effect, the coolant liquid of pile's output passes through the deionizer, get into the input of pile after first valve member, low-voltage auxiliary water pump, the second valve member again in proper order. The deionizer can reduce ions in the cooling liquid, so that the insulation resistance of a cooling loop of a galvanic pile can be improved, and when the insulation resistance is larger than a preset threshold, the fuel cell vehicle can be powered on with high-voltage electricity, so that the fuel cell vehicle can be started normally. The method can avoid the situation that the fuel cell vehicle cannot be started due to low insulation resistance caused by long-term standing.
Description
Technical Field
The present disclosure relates to fuel cell technology, and in particular, to a thermal management system for a fuel cell and a fuel cell vehicle.
Background
Before the fuel cell vehicle starts, an insulation monitor of the whole vehicle lithium battery BMS can be used for detecting the insulation resistance value of a pile cooling loop in the fuel cell system, and if the insulation value of the fuel cell system is lower than a preset threshold value, the high voltage on the whole vehicle can be forbidden, so that the fuel cell vehicle cannot start.
When the fuel cell vehicle is parked for a long time, the components in the cooling loop of the electric pile can continuously release ions, so that the insulation resistance value is reduced, when the vehicle is started, the situation that the insulation resistance value of the cooling loop of the electric pile is lower than a preset threshold value is detected, the high-voltage power supply is stopped, and the fuel cell vehicle cannot be started is avoided. In view of the above problems, in the related art, the fuel cell system is generally disconnected by directly replacing the coolant or electrically disconnecting the fuel cell system, and the water pump is operated by supplying power to the water pump alone to lower the conductivity and raise the insulation resistance, but these methods are complicated to operate and are excessively costly.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a thermal management system of a fuel cell and a fuel cell vehicle, which can avoid the situation that the fuel cell vehicle cannot be started due to low insulation resistance caused by long-term standing.
A thermal management system for a fuel cell according to an embodiment of a first aspect of the present application, comprising:
the electric pile cooling loop comprises an electric pile, a high-voltage main water pump, an ion remover, a first valve element and a second valve element, wherein the first end of the first valve element is connected with the output end of the electric pile, the second end of the first valve element is connected with the input end of the high-voltage main water pump, the output end of the high-voltage main water pump is connected with the first end of the second valve element, the second end of the second valve element is connected with the input end of the electric pile, the input end of the ion remover is connected with the output end of the electric pile, and the output end of the ion remover is connected with the first end of the first valve element;
the auxiliary cooling circuit comprises a fuel cell system BOP module, a low-voltage auxiliary water pump, a third valve element and a fourth valve element, one end of the third valve element is connected with the output end of the fuel cell system BOP module, the other end of the third valve element is connected with the input end of the low-voltage auxiliary water pump, and the third end of the first valve element is connected between the third valve element and the low-voltage auxiliary water pump; one end of the fourth valve element is connected with the input end of the BOP module of the fuel cell system, the other end of the fourth valve element is connected with the output end of the low-voltage auxiliary water pump, and the third end of the second valve element is connected between the fourth valve element and the low-voltage auxiliary water pump.
The thermal management system of the fuel cell according to the embodiment of the application has at least the following beneficial effects: the thermal management system of the fuel cell is applied to the fuel cell vehicle, when the fuel cell vehicle is parked for a long time, the components in the cooling loop of the electric pile can continuously release ions, so that the insulation resistance value of the cooling loop of the electric pile is reduced, the fuel cell vehicle can stop high-voltage electricity when being started after detecting that the insulation resistance value is lower than a preset threshold value, and therefore the high-voltage main water pump cannot be started, but the fuel cell vehicle can provide low-voltage electricity, and the low-voltage auxiliary water pump can operate at the moment. Therefore, at this time, the first end of the first valve element is conducted with the third end, the second end of the first valve element is closed, the second end of the second valve element is conducted with the third end, the first end of the second valve element is closed, the third valve element is closed, the fourth valve element is closed, the low-voltage auxiliary water pump is started, and under the action of the low-voltage auxiliary water pump, the cooling liquid output by the output end of the electric pile passes through the deionizer, and then sequentially passes through the first valve element, the low-voltage auxiliary water pump and the second valve element and then enters the input end of the electric pile. The deionizer can reduce ions in the cooling liquid, so that the insulation resistance of a cooling loop of a galvanic pile can be improved, and when the insulation resistance is larger than a preset threshold, the fuel cell vehicle can be powered on with high-voltage electricity, so that the fuel cell vehicle can be started normally.
According to some embodiments of the application, the stack cooling circuit further comprises a main radiator, and the first end of the first valve element is connected with the output end of the stack through the main radiator.
According to some embodiments of the application, the stack cooling circuit further comprises a filter through which the output of the deionizer is connected to the first end of the first valve member.
According to some embodiments of the application, the stack cooling circuit further comprises a first expansion tank through which the output of the deionizer is connected to the filter, the first expansion tank being further connected to the main radiator.
According to some embodiments of the present application, the stack cooling circuit further comprises a heater and a thermostat, the main radiator is connected with the output end of the stack through the thermostat, a first end of the thermostat is connected with the output end of the stack, a second end of the thermostat is connected with the input end of the main radiator, and a third end of the thermostat is connected between the output end of the main radiator and the input end of the filter through the heater.
According to some embodiments of the present application, the fuel cell system BOP module further comprises an auxiliary radiator and a second expansion tank, an output end of the auxiliary radiator is connected with an input end of the low-voltage auxiliary water pump through the third valve element, a first end of the second expansion tank is connected with the auxiliary radiator, and a second end of the second expansion tank is connected between the auxiliary radiator and the third valve element.
According to some embodiments of the present application, the BOP module of the fuel cell system is provided with a first heat dissipation branch, an input end of the first heat dissipation branch is connected with an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the first heat dissipation branch is connected with an input end of the auxiliary radiator, the first heat dissipation branch is provided with a hydrogen circulation pump, and a cooling liquid in the first heat dissipation branch is used for reducing the temperature of the hydrogen circulation pump.
According to some embodiments of the present application, the BOP module of the fuel cell system is provided with a second heat dissipation branch, an input end of the second heat dissipation branch is connected with an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the second heat dissipation branch is connected with an input end of the auxiliary radiator, the second heat dissipation branch is provided with an air compressor, and a cooling liquid in the second heat dissipation branch is used for reducing a temperature of the air compressor.
According to some embodiments of the present application, the BOP module of the fuel cell system is provided with a third heat dissipation branch, an input end of the third heat dissipation branch is connected with an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the third heat dissipation branch is connected with an input end of the auxiliary radiator and a third end of the second expansion tank respectively, the third heat dissipation branch is provided with a boost module, and the coolant in the third heat dissipation branch is used for reducing the temperature of the boost module.
Embodiments of a second aspect of the present application provide a fuel cell vehicle comprising a thermal management system for a fuel cell according to any one of the embodiments of the first aspect of the present application.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a thermal management system of a fuel cell according to some embodiments of the present application;
fig. 2 is a device block diagram of a thermal management system for a fuel cell according to further embodiments of the present application.
Reference numerals:
a first valve element 110; a high voltage main water pump 120; a second valve member 130; a galvanic pile 140; a deionizer 150; an intercooler 160; a heater 170; a main radiator 180; a first expansion tank 190; a thermostat 191; a filter 192; a third valve element 210; a low voltage auxiliary water pump 220; a fourth valve element 230; an auxiliary radiator 240; a hydrogen circulation pump 250; an air compressor 260; a boost module 270; a second expansion tank 280.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
When the fuel cell vehicle is parked for a long time, the components in the cooling loop of the electric pile can continuously release ions, so that the insulation resistance value is reduced, when the vehicle is started, the situation that the insulation resistance value of the cooling loop of the electric pile is lower than a preset threshold value is detected, the high-voltage power supply is stopped, and the fuel cell vehicle cannot be started is avoided. In order to solve the above problems, in the related art, the fuel cell system is generally directly replaced or electrically disconnected, and the separate water supply pump supplies power to enable the water pump to operate so as to reduce the conductivity and improve the insulation resistance, but because the special coolant for the fuel cell engine is expensive, the material cost of replacing the coolant once for a long time is too high, and 1-2 workers are required to spend half a day to process the replacement for replacing the coolant, the time is long, and the processing is complex. Based on this, the embodiment of the application provides a thermal management system of a fuel cell and a fuel cell vehicle, which can avoid that the fuel cell vehicle cannot be started due to low insulation resistance caused by long-term standing.
Referring to fig. 1 to 2, a thermal management system of a fuel cell according to an embodiment of a first aspect of the present application includes:
the electric pile cooling circuit comprises an electric pile 140, a high-voltage main water pump 120, a deionizer 150, a first valve element 110 and a second valve element 130, wherein a first end of the first valve element 110 is connected with an output end of the electric pile 140, a second end of the first valve element 110 is connected with an input end of the high-voltage main water pump 120, an output end of the high-voltage main water pump 120 is connected with a first end of the second valve element 130, a second end of the second valve element 130 is connected with an input end of the electric pile 140, an input end of the deionizer 150 is connected with an output end of the electric pile 140, and an output end of the deionizer 150 is connected with the first end of the first valve element 110;
the auxiliary cooling circuit comprises a fuel cell system BOP module, a low-voltage auxiliary water pump 220, a third valve element 210 and a fourth valve element 230, wherein one end of the third valve element 210 is connected with the output end of the fuel cell system BOP module, the other end of the third valve element 210 is connected with the input end of the low-voltage auxiliary water pump 220, and the third end of the first valve element 110 is connected between the third valve element 210 and the low-voltage auxiliary water pump 220; one end of the fourth valve element 230 is connected to an input of the BOP module of the fuel cell system, the other end of the fourth valve element 230 is connected to an output of the low-voltage auxiliary water pump 220, and the third end of the second valve element 130 is connected between the fourth valve element 230 and the low-voltage auxiliary water pump 220.
The thermal management system of the fuel cell according to the embodiment of the application has at least the following beneficial effects: the thermal management system of the fuel cell is applied to the fuel cell vehicle, when the fuel cell vehicle is parked for a long time, the components in the cooling loop of the electric pile can continuously release ions, so that the insulation resistance value of the cooling loop of the electric pile is reduced, the fuel cell vehicle can stop high-voltage electricity when being started after detecting that the insulation resistance value is lower than a preset threshold value, and therefore the high-voltage main water pump cannot be started, but the fuel cell vehicle can provide low-voltage electricity, and the low-voltage auxiliary water pump can operate at the moment. Therefore, at this time, the first end of the first valve element 110 is conducted with the third end, the second end of the first valve element 110 is closed, the second end of the second valve element 130 is conducted with the third end, the first end of the second valve element 130 is closed, the third valve element 210 is closed, the fourth valve element 230 is closed, the low-voltage auxiliary water pump is started, and the cooling liquid output from the output end of the electric pile 140 passes through the deionizer 150 under the action of the low-voltage auxiliary water pump, and then sequentially passes through the first valve element 110, the low-voltage auxiliary water pump and the second valve element 130 to enter the input end of the electric pile 140. The deionizer 150 can reduce ions in the coolant, so that the insulation resistance of the stack cooling circuit can be increased, and when the insulation resistance is greater than a preset threshold, the fuel cell vehicle can be powered on with high voltage, so that normal start-up can be performed. Therefore, the embodiment of the application can avoid the situation that the fuel cell vehicle cannot be started due to low insulation resistance caused by long-term standing.
It will be appreciated that the first valve member 110 and the second valve member 130 are three-way valves and the third valve member 210 and the fourth valve member 230 are two-way valves.
It should be noted that, the deionizing device 150 can reduce ions in the cooling liquid, so as to increase the insulation resistance of the cooling circuit of the electric pile, when the insulation resistance is greater than the preset threshold, the fuel cell vehicle can normally apply high voltage, and the high voltage main water pump 120 can normally operate at this time, so that the first end and the second end of the first valve element 110 are conducted, the third end of the first valve element 110 is closed, the first end and the second end of the second valve element 130 are conducted, and the third end of the second valve element 130 is closed. And the third valve element 210 is rendered conductive and the fourth valve element 230 is rendered conductive. At this time, the high-voltage main water pump 120 can normally operate, and the cooling liquid output from the output end of the electric pile 140 circulates in the cooling circulation loop of the electric pile 140, and at this time, the electric pile cooling loop and the auxiliary cooling loop are independent from each other and do not affect each other.
It should be noted that the operating voltage of the low-voltage auxiliary water pump 220 is generally 24V, and the operating voltage of the high-voltage main water pump 120 is generally greater than or equal to 220V.
It should be noted that the english language of BOP is fully called Balanceof Plant, and BOP is a term of the power generation industry according to the definition of wikipedia, and refers to all support components and auxiliary systems except the generator body. The fuel cell system BOP module may include a transformer, an inverter, a pump, and the like. The BOP may be referred to as an accessory.
It will be appreciated that referring to fig. 1, in accordance with some embodiments of the present application, the stack cooling circuit further includes a main radiator 180, and the first end of the first valve element 110 is connected to the output end of the stack 140 through the main radiator 180. Specifically, the first end of the first valve element 110 is connected to the output end of the main radiator 180, and the input end of the main radiator 180 is connected to the output end of the stack 140. The main radiator 180 is used for radiating the cooling liquid of the stack cooling circuit.
According to some embodiments of the present application, the stack cooling circuit further comprises a filter 192, and the output of the deionizer 150 is connected to the first end of the first valve member 110 through the filter 192.
According to some embodiments of the present application, the stack cooling circuit further comprises a first expansion tank 190, the output of the deionizer 150 being connected to a filter 192 via the first expansion tank 190, the first expansion tank 190 also being connected to the main radiator 180.
Specifically, the input end of the filter 192 is connected to the output end of the main radiator 180 and the first expansion tank 190, respectively, the output end of the filter 192 is connected to the first end of the first valve element 110, the input end of the deionizer 150 is connected to the output end of the stack 140, the output end of the deionizer 150 is connected to the first expansion tank 190, and the first expansion tank 190 is also connected to the main radiator 180. The first expansion tank 190 is used for fluid supplementing, pressure stabilizing and air exhausting of the pile cooling circuit. The filter 192 is used to filter impurities in the cooling liquid of the stack cooling circuit.
According to some embodiments of the present application, the stack cooling circuit further includes a heater 170 and a thermostat 191, the main radiator 180 is connected to the output end of the stack 140 through the thermostat 191, the first end of the thermostat 191 is connected to the output end of the stack 140, the second end of the thermostat 191 is connected to the input end of the main radiator 180, and the third end of the thermostat 191 is connected between the output end of the main radiator 180 and the input end of the filter 192 through the heater 170. Specifically, the first end of the thermostat 191 is an input end, the second end and the third end of the thermostat 191 are output ends, and the thermostat 191 is used for adjusting the flow output from the output end of the electric pile 140 to the main radiator 180 and the heater 170. The heater 170 may be a PTC heater 170, and the heater 170 is used to heat the coolant of the stack cooling circuit when the temperature of the coolant is too low.
It can be appreciated that referring to fig. 2, the stack cooling circuit of the embodiment of the present application further includes an intercooler 160, an input end of the intercooler 160 is connected to an output end of the stack 140, and an output end of the intercooler 160 is sequentially connected to the input end of the stack 140 through the first valve 110, the high-voltage main water pump 120, and the second valve 130.
It will be appreciated that referring to fig. 2, the BOP module of the fuel cell system further includes an auxiliary radiator 240 and a second expansion tank 280, an output end of the auxiliary radiator 240 is connected to an input end of the low-voltage auxiliary water pump through a third valve 210, a first end of the second expansion tank 280 is connected to the auxiliary radiator 240, and a second end of the second expansion tank 280 is connected between the auxiliary radiator 240 and the third valve 210.
It will be appreciated that the BOP module of the fuel cell system is provided with a first heat dissipation branch, the input end of the first heat dissipation branch is connected to the output end of the low-voltage auxiliary water pump through the fourth valve 230, the output end of the first heat dissipation branch is connected to the input end of the auxiliary radiator 240, the first heat dissipation branch is provided with a hydrogen circulation pump 250, and the coolant in the first heat dissipation branch is used for reducing the temperature of the hydrogen circulation pump 250.
It will be appreciated that the BOP module of the fuel cell system is provided with a second heat dissipation branch, an input end of the second heat dissipation branch is connected to an output end of the low-voltage auxiliary water pump through the fourth valve 230, an output end of the second heat dissipation branch is connected to an input end of the auxiliary heat sink 240, the second heat dissipation branch is provided with an air compressor 260, and the cooling liquid in the second heat dissipation branch is used for reducing the temperature of the air compressor 260.
It can be understood that the BOP module of the fuel cell system is provided with a third heat dissipation branch, an input end of the third heat dissipation branch is connected with an output end of the low-voltage auxiliary water pump through the fourth valve 230, an output end of the third heat dissipation branch is respectively connected with an input end of the auxiliary radiator 240 and a third end of the second expansion water tank 280, the third heat dissipation branch is provided with a boost module 270, and the coolant in the third heat dissipation branch is used for reducing the temperature of the boost module 270.
The second expansion tank 280 is used, for example, to assist in fluid make-up, pressure stabilization, and venting of the cooling circuit. The auxiliary radiator 240 is used for cooling the cooling liquid of the auxiliary cooling circuit, in the auxiliary cooling circuit, the cooling liquid output by the low-voltage auxiliary water pump 220 flows into the first radiating branch, the second radiating branch and the third radiating branch respectively, and then flows into the auxiliary radiator 240, and then flows into the input end of the low-voltage auxiliary water pump 220. The coolant in the first heat sink branch is used to reduce the temperature of the hydrogen circulation pump 250, and the coolant in the second heat sink branch is used to reduce the temperature of the air compressor 260. The coolant in the third heat sink branch is used to reduce the temperature of the boost module 270. It should be noted that the boost module 270 is a DC-DC boost converter.
Embodiments of a second aspect of the present application provide a fuel cell vehicle comprising a thermal management system for a fuel cell as in any of the embodiments of the first aspect.
Since the fuel cell vehicle includes the thermal management system of the fuel cell as in any of the embodiments of the first aspect of the present application, the corresponding matters of the thermal management system of the fuel cell in the embodiments mentioned in the first aspect are equally applicable to the fuel cell vehicle in the embodiments mentioned in the second aspect, and have the same implementation principles and technical effects, and are not described in detail herein to avoid redundancy of description.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A thermal management system for a fuel cell, comprising:
the electric pile cooling loop comprises an electric pile, a high-voltage main water pump, an ion remover, a first valve element and a second valve element, wherein the first end of the first valve element is connected with the output end of the electric pile, the second end of the first valve element is connected with the input end of the high-voltage main water pump, the output end of the high-voltage main water pump is connected with the first end of the second valve element, the second end of the second valve element is connected with the input end of the electric pile, the input end of the ion remover is connected with the output end of the electric pile, and the output end of the ion remover is connected with the first end of the first valve element;
the auxiliary cooling circuit comprises a fuel cell system BOP module, a low-voltage auxiliary water pump, a third valve element and a fourth valve element, one end of the third valve element is connected with the output end of the fuel cell system BOP module, the other end of the third valve element is connected with the input end of the low-voltage auxiliary water pump, and the third end of the first valve element is connected between the third valve element and the low-voltage auxiliary water pump; one end of the fourth valve element is connected with the input end of the BOP module of the fuel cell system, the other end of the fourth valve element is connected with the output end of the low-voltage auxiliary water pump, and the third end of the second valve element is connected between the fourth valve element and the low-voltage auxiliary water pump.
2. The thermal management system of a fuel cell of claim 1 wherein the stack cooling circuit further comprises a primary radiator through which the first end of the first valve member is connected to the output of the stack.
3. The thermal management system of a fuel cell of claim 2 wherein the stack cooling circuit further comprises a filter through which the output of the deionizer is connected to the first end of the first valve member.
4. A thermal management system for a fuel cell according to claim 3, wherein the stack cooling circuit further comprises a first expansion tank through which the output of the deionizer is connected to the filter, the first expansion tank being further connected to the main radiator.
5. A thermal management system for a fuel cell according to claim 3, wherein the stack cooling circuit further comprises a heater and a thermostat, the primary radiator being connected to the output of the stack through the thermostat, a first end of the thermostat being connected to the output of the stack, a second end of the thermostat being connected to the input of the primary radiator, and a third end of the thermostat being connected between the output of the primary radiator and the input of the filter through the heater.
6. The thermal management system of a fuel cell of claim 1, wherein the fuel cell system BOP module comprises an auxiliary radiator and a second expansion tank, an output of the auxiliary radiator being connected to an input of the low voltage auxiliary water pump through the third valve element, a first end of the second expansion tank being connected to the auxiliary radiator, and a second end of the second expansion tank being connected between the auxiliary radiator and the third valve element.
7. The thermal management system of a fuel cell of claim 6, wherein the BOP module of the fuel cell system is provided with a first heat dissipation branch, an input end of the first heat dissipation branch is connected to an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the first heat dissipation branch is connected to an input end of the auxiliary heat sink, the first heat dissipation branch is provided with a hydrogen circulation pump, and the coolant in the first heat dissipation branch is used for reducing a temperature of the hydrogen circulation pump.
8. The thermal management system of a fuel cell of claim 6, wherein the BOP module of the fuel cell system is provided with a second heat dissipation branch, an input end of the second heat dissipation branch is connected to an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the second heat dissipation branch is connected to an input end of the auxiliary heat sink, the second heat dissipation branch is provided with an air compressor, and the coolant in the second heat dissipation branch is used for reducing a temperature of the air compressor.
9. The thermal management system of a fuel cell of claim 6, wherein the BOP module of the fuel cell system is provided with a third heat dissipation branch, an input end of the third heat dissipation branch is connected with an output end of the low-voltage auxiliary water pump through the fourth valve element, an output end of the third heat dissipation branch is respectively connected with an input end of the auxiliary radiator and a third end of the second expansion tank, the third heat dissipation branch is provided with a pressure boost module, and the coolant in the third heat dissipation branch is used for reducing the temperature of the pressure boost module.
10. A fuel cell vehicle comprising the thermal management system of a fuel cell according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322310084.6U CN220692068U (en) | 2023-08-24 | 2023-08-24 | Thermal management system of fuel cell and fuel cell vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322310084.6U CN220692068U (en) | 2023-08-24 | 2023-08-24 | Thermal management system of fuel cell and fuel cell vehicle |
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| CN202322310084.6U Active CN220692068U (en) | 2023-08-24 | 2023-08-24 | Thermal management system of fuel cell and fuel cell vehicle |
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| Country | Link |
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| CN (1) | CN220692068U (en) |
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