CN115790009A - Monitoring device and method for electric vehicle cooling system - Google Patents
Monitoring device and method for electric vehicle cooling system Download PDFInfo
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- CN115790009A CN115790009A CN202211192933.6A CN202211192933A CN115790009A CN 115790009 A CN115790009 A CN 115790009A CN 202211192933 A CN202211192933 A CN 202211192933A CN 115790009 A CN115790009 A CN 115790009A
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- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000003860 storage Methods 0.000 claims abstract description 43
- 238000012544 monitoring process Methods 0.000 claims abstract description 24
- 239000002826 coolant Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000000110 cooling liquid Substances 0.000 claims description 29
- 239000000523 sample Substances 0.000 claims description 21
- 238000007872 degassing Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000006243 Fine Thermal Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention belongs to the technical field of new energy automobile thermal management, and particularly relates to a monitoring device and a monitoring method for an electric vehicle cooling system. The utility model provides an electric vehicle cooling system monitoring device, includes the water storage kettle, be provided with liquid-gas circulation structure on the water storage kettle, liquid-gas circulation structure includes the drainage tube, the drainage tube sets up in the water storage kettle, the drainage tube is used for the coolant liquid gas mixture of automobile cooling system backward flow fully separating, avoids coolant liquid gas mixture to erode the kettle wall, causes the noise.
Description
Technical Field
The invention belongs to the technical field of new energy automobile thermal management, and particularly relates to a monitoring device and a monitoring method for an electric vehicle cooling system.
Background
Compared with the traditional fuel vehicle, the pure electric vehicle cooling system is more complex in logic structure and more in cooling parts. The cooling system is required to cool the battery pack, the vehicle control unit, the driving motor, the motor controller and other components at the same time; and because the temperature intervals in which the components work are different and are more sensitive to temperature, a finely designed thermal management system is required to meet the thermal management requirements of the pure electric vehicle. The device for monitoring the cooling system is a key core component of the fine thermal management system of the pure electric vehicle. The monitoring device for the cooling system is used for monitoring the change of the cooling liquid as the core of the monitoring device.
It is well known that coolant is critical to the overall thermal management system, and that sufficient coolant ensures that the various components of the thermal management system operate in the optimum temperature range. The monitoring device and the monitoring method for the cooling system, particularly the cooling liquid can enable a driver to know the condition of the cooling liquid more conveniently, so that each part in the thermal management system can be ensured to operate in a normal working temperature range, overload operation of each part in the thermal management system due to lack of the cooling liquid is avoided, and driving safety is guaranteed.
The pure electric vehicle has higher requirements on the comfort of the whole vehicle, and especially has higher requirements on the noise of the whole vehicle under the condition of lacking an engine. Meanwhile, liquid-gas separation of backflow of the cooling system is insufficient, and gas enters the cooling system, so that a part of area in the cooling system is occupied by the gas, related parts in the thermal management system lack cooling liquid, heat load of the parts is increased, and the parts fail in severe cases.
Disclosure of Invention
The purpose of the invention is: the monitoring device and the monitoring method are used for fully separating liquid and gas which flow back from a cooling system, avoiding noise and improving the safety of the cooling system.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an electric vehicle cooling system monitoring device, includes the water storage kettle, be provided with liquid-gas circulation structure on the water storage kettle, liquid-gas circulation structure includes the drainage tube, the drainage tube sets up in the water storage kettle, the drainage tube is used for fully separating the coolant liquid gas mixture of automobile cooling system backward flow, avoids coolant liquid gas mixture to erode the kettle wall, causes the noise.
Through setting up the drainage tube, with the vertical setting in liquid level top of the export of drainage tube, both with liquid and gaseous reposition of redundant personnel above the liquid level, avoid the liquid-gas mixture to wash away the kettle wall again, cause the noise.
Preferably, a plurality of separation chambers are arranged in the water storage pot and used for separating the interior of the pot body and separating high-pressure liquid-gas mixtures, so that the phenomenon that the liquid level rises due to excessive high-pressure gas in cooling liquid entering the water storage pot and the pin type liquid level sensor makes misjudgment is avoided;
the bottoms of the separation chambers are communicated with each other, and the liquid-gas circulation structure is connected with the separation chambers. The arrangement is favorable for the accuracy of the display result of the contact pin type liquid level sensor.
Preferably, the water storage kettle comprises an upper kettle body and a lower kettle body, and the upper kettle body and the lower kettle body are fixedly connected; the liquid-gas circulation structure comprises a filling port, a degassing port and a water replenishing port, wherein the filling port is arranged at the top of the upper kettle body, the degassing port is arranged at one side of the upper kettle body, the water replenishing port is arranged at the bottom of one side of the lower kettle body, and the filling port, the degassing port and the water replenishing port are respectively positioned in different separated chambers. By the arrangement, filling, water replenishing and degassing are facilitated.
Preferably, the drainage tube is connected with the degassing port. So arranged, the draft tube is connected to the cooling system.
An electric vehicle cooling system monitoring method is applied to the electric vehicle cooling system monitoring device, and the method comprises the following steps:
the contact pin type liquid level sensor collects a liquid level signal and transmits the liquid level signal to the thermal management controller;
the thermal management controller judges the liquid level signal according to a preset algorithm, generates different signals according to a judgment result and uploads the different signals to the whole vehicle controller;
the vehicle control unit further judges the signal, determines the condition of the cooling liquid in the water storage pot, and decides whether to send an alarm prompt to a driver instrument and a central control instrument.
Optionally, the determining, by the thermal management controller, the liquid level signal according to a preset algorithm includes:
comparing the liquid level signal with a preset liquid level value, and when the liquid level signal is lower than the preset liquid level value, the thermal management controller uploads a liquid shortage signal to a vehicle controller;
or the liquid level signal is higher than a preset liquid level value, and the thermal management controller uploads a sensor signal value to the vehicle controller.
Optionally, the vehicle control unit further determines the signal, determines the coolant condition in the water storage pot, and decides whether to send an alarm prompt to the driver instrument and the central control instrument, including:
the vehicle control unit receives the liquid shortage signal, communicates with a gyroscope in an automobile chassis area to acquire gradient data of the vehicle, and determines whether a false alarm occurs according to the gradient condition of the vehicle;
or the vehicle control unit receives the sensor signal value, the vehicle control unit uploads the sensor signal value to the cockpit area controller, and the cockpit area controller displays the sensor signal value on a driver instrument and a central control instrument.
Optionally, determining whether a false alarm occurs according to a gradient condition of the vehicle includes:
when the gradient data shows that the vehicle has a gradient, judging that a false alarm occurs and the liquid level is normal;
or when the gradient data show that the vehicle has no gradient, the real shortage of the water storage kettle is judged, the vehicle control unit uploads a cooling liquid alarm signal to the cockpit area controller, and the cockpit area controller sends an alarm prompt to the driver instrument and the central control instrument.
The invention adopting the technical scheme has the advantages that:
1. in the running process of a vehicle, a high-pressure backflow liquid-gas mixture in a cooling system enters a drainage tube through a degassing port, the drainage tube guides the liquid-gas mixture to be below the liquid level of cooling liquid in a cavity of a water storage kettle, so that the liquid-gas mixture is prevented from scouring the kettle wall and generating noise, meanwhile, the liquid-gas mixture is ensured to be fully separated, and gas is prevented from entering the cooling system;
2. according to the invention, the plurality of separated chambers are arranged in the kettle body, so that the flowing of high-pressure gas below the liquid level is blocked, the liquid-gas separation effect is enhanced, the phenomenon that the liquid level rises due to excessive high-pressure gas in cooling liquid entering the water storage kettle is avoided, the pin type liquid level sensor is misjudged, and the accuracy of the pin type liquid level sensor in signal acquisition is improved.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic diagram illustrating an overall structure of an embodiment of a monitoring apparatus for a cooling system of an electric vehicle according to the present invention;
FIG. 2 is a schematic structural diagram of a lower kettle body of an embodiment of a monitoring device for a cooling system of an electric vehicle according to the present invention;
FIG. 3 is a schematic structural diagram of an upper kettle body of an embodiment of a monitoring device for a cooling system of an electric vehicle according to the present invention;
FIG. 4 is a schematic view of the internal structure of a water storage kettle according to an embodiment of the monitoring device for the cooling system of the electric vehicle;
FIG. 5 is a schematic diagram of a probe of an embodiment of a monitoring device for a cooling system of an electric vehicle according to the present invention;
FIG. 6 is a logic block diagram of an embodiment of a method of monitoring an electric vehicle cooling system in accordance with the present invention;
FIG. 7 is a schematic diagram of the operation of a probe according to an embodiment of the method for monitoring a cooling system of an electric vehicle of the present invention;
FIG. 8 is a schematic view illustrating the operation of filling the reservoir with coolant according to the embodiment of the monitoring method for the cooling system of the electric vehicle;
FIG. 9 is a schematic view of a probe partially immersed in coolant in a reservoir of an embodiment of a method for monitoring a cooling system of an electric vehicle according to the present invention;
FIG. 10 is a schematic view of the operation of the electric vehicle cooling system monitoring method according to the embodiment of the present invention in which the coolant in the reservoir does not contact the probe.
The main element symbols are as follows:
1. a water storage pot; 11. separating the chambers; 12. an upper kettle body; 13. a lower kettle body; 2. a drainage tube; 3. a filling port; 4. a degassing port; 5. a water replenishing port; 6. a pin-type liquid level sensor; 61. a probe; 62. and (5) sealing rings.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, wherein like reference numerals are used for similar or identical parts in the drawings or the description, and implementations not shown or described in the drawings are known to those of ordinary skill in the art. In addition, directional terms, such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1 to 5, the monitoring device for the cooling system of the electric vehicle of the present invention comprises a water storage pot 1, a pin type liquid level sensor 6 is fixedly installed on the water storage pot 1 through screws, and a liquid-gas circulation structure is arranged on the water storage pot 1.
The liquid-gas circulation structure is connected with an automobile cooling system, the pin type liquid level sensor 6 is used for monitoring the liquid level condition in the water storage kettle 1, and when the liquid level in the water storage kettle 1 is lower than a preset liquid level value, an alarm signal is sent out in time.
As shown in fig. 1 to 4, in the embodiment, the water storage kettle 1 comprises an upper kettle body 12 and a lower kettle body 13, a filling port 3 is integrally formed on the top wall of the upper kettle body 12 in an injection molding mode, and cooling liquid is added through the filling port 3 when the water storage kettle 1 gives out a liquid shortage alarm; a degassing port 4 is integrally formed on one side of the upper kettle body 12 in an injection molding mode, a drainage tube 2 is integrally formed at the position of the degassing port 4 in the water storage kettle 1 and the upper kettle body 12 in an injection molding mode, in the running process of a vehicle, a high-pressure backflow liquid-gas mixture in a cooling system enters the drainage tube 2 through the degassing port 4, the drainage tube 2 guides the liquid-gas mixture below the liquid level of cooling liquid in the cavity of the water storage kettle 1, the liquid-gas mixture is prevented from scouring the kettle wall and generating noise, meanwhile, the liquid-gas mixture is ensured to be fully separated, and gas is prevented from entering the cooling system;
a water replenishing port 5 is integrally formed at the bottom of one side of the lower kettle body 13 in an injection molding mode, when an automobile works normally, the position of the water replenishing port 5 is kept in a state of being fully covered by cooling liquid, the water replenishing port 5 is connected with an automobile cooling system, the cooling liquid enters the kettle body from the filling port 3 and the degassing port 4 and finally enters the cooling system through the water replenishing port 5, and the fact that the cooling liquid in the cooling system is sufficient is guaranteed.
In the embodiment, the upper pot 12 and the lower pot 13 are both integrally injection molded by PP material, and the upper pot 12 and the lower pot 13 are formed by hot melt welding. Simple structure and convenient production.
As shown in fig. 2, in this embodiment, a plurality of separation chambers 11 are integrally injection molded in the kettle body and the lower kettle body 13, the filling port 3, the degassing port 4 and the water replenishing port 5 are respectively located in the different separation chambers 11, the bottoms of the separation chambers 11 are all communicated, so as to play a role in blocking the flow of high-pressure gas below the liquid level, enhance the liquid-gas separation effect, avoid the phenomenon that the liquid level rises due to too much high-pressure gas in the cooling liquid entering the water storage kettle 1, make the pin type liquid level sensor 6 misjudge, and improve the accuracy of signals acquired by the pin type liquid level sensor 6.
As shown in fig. 5, in this embodiment, a probe 61 is fixedly installed at the bottom of the pin-type liquid level sensor 6 through a clamping groove, when the automobile normally runs, the probe 61 extends below the liquid level in the water storage pot 1, a sealing ring 62 is sleeved on the probe 61, and the probe 61 is sealed with the water storage pot 1 through the sealing ring 62. The material of the seal ring 62 was EPDM, and the material of the probe 61 was SUS304. The contact pin type liquid level sensor 6 is a passive device and has a simple and reliable structure. The liquid level alarming function of the contact pin type liquid level sensor 6 is driven by an external circuit. The probe 61 and the wall of the water storage pot 1 form a capacitor. When the probe 61 is not covered by the cooling liquid, i.e. the probe 61 is in the air, the external circuit measures a capacitance value; when the probe 61 is covered with cooling liquid, i.e. the probe 61 is in the cooling liquid, the external circuit measures another capacitance value. The external circuit detects different voltages according to different capacitance values, and whether the cooling liquid in the water storage kettle 1 is sufficient or not can be determined by comparing the voltage values.
Example 2
As shown in fig. 6 to 10, an electric vehicle cooling system monitoring method applied to the above-mentioned electric vehicle cooling system monitoring apparatus includes:
the contact pin type liquid level sensor 6 collects a liquid level signal and transmits the liquid level signal to the thermal management controller;
the thermal management controller judges the liquid level signal according to a preset algorithm, generates different signals according to a judgment result and uploads the different signals to the whole vehicle controller;
the vehicle control unit further judges the signal, determines the condition of the cooling liquid in the water storage pot 1 and decides whether to send an alarm prompt to a driver instrument and a central control instrument.
The signal that contact pin formula level sensor 6 gathered is judged earlier, confirms whether lack of liquid in the kettle 1, when judging that lack of liquid in the kettle 1, the vehicle control unit combines other signals to further confirm the condition in the kettle 1, prevents to report by mistake, after confirming lack of liquid in the kettle 1, sends the warning to driver's instrument, well accuse instrument and reminds.
As shown in fig. 7 to 10, it will be appreciated that when the chamber of the reservoir 1 is filled with coolant, the probes 61 are fully covered by the coolant and the capacitive reactance in the circuit C x is 5uF. When 5V alternating current is introduced into the circuit, the voltage of 0.181V-0.723V is input into the microcontroller by the external circuit through conversion; when part of cooling liquid exists in the water storage pot 1, the probe 61 is partially covered by the cooling liquid, the C x capacitive reactance value in the circuit is 50nF, and when 5V alternating current is introduced into the circuit, the voltage is converted through an external circuit, and the external circuit inputs 1.73V-2.42V voltage into the microcontroller. As shown in fig. 7 and 10, when the cooling liquid in the water storage pot 1 is insufficient, the probe 61 is positioned above the cooling liquid, the capacitive reactance value in the circuit is 1nF, and when 5V alternating current is introduced into the circuit, the voltage is converted by an external circuit which inputs 3.99V-4.91V into the microcontroller. The microcontroller in the circuit compares the input voltage to judge whether the liquid in the water storage pot 1 is sufficient or not.
As an optional implementation manner, the determining, by the thermal management controller, the liquid level signal according to a preset algorithm includes:
comparing the liquid level signal with a preset liquid level value, and when the liquid level signal is lower than the preset liquid level value, the thermal management controller uploads a liquid shortage signal to a vehicle controller;
or the liquid level signal is higher than a preset liquid level value, and the heat management controller uploads a sensor signal value to the vehicle controller.
According to the comparison result of the microcontroller in the circuit on the input voltage of the liquid level signal, when the liquid level signal is higher than a preset liquid level value, the vehicle normally runs; when the liquid level signal is lower than the preset liquid level value, the risk of coolant shortage occurs to the automobile.
As an optional implementation manner, the vehicle control unit further determines the signal, determines the condition of the coolant in the water storage pot 1, and decides whether to send an alarm prompt to a driver meter and a central control meter, including:
the vehicle control unit receives the liquid shortage signal, communicates with a gyroscope in an automobile chassis area to acquire gradient data of the vehicle, and determines whether a false alarm occurs according to the gradient condition of the vehicle;
or the vehicle control unit receives the sensor signal value, the vehicle control unit uploads the sensor signal value to the cockpit area controller, and the cockpit area controller displays the sensor signal value on the driver instrument and the central control instrument.
When the vehicle control unit receives the signal value of the sensor, the signal value can be normally displayed on a driver instrument and a central control instrument; when receiving lacking the liquid signal, probably because the slope of automobile body itself leads to retaining kettle 1 slope, causes the condition of false alarm, and vehicle control unit detects the vehicle slope, gets rid of the false alarm condition.
As an alternative embodiment, the determining whether the false alarm occurs according to the gradient condition of the vehicle includes:
when the gradient data shows that the vehicle has a gradient, judging that a false alarm occurs and the liquid level is normal;
or when the gradient data shows that the vehicle has no gradient, the water storage kettle 1 is judged to be really in short of liquid, the vehicle control unit uploads a cooling liquid alarm signal to the cockpit area controller, and the cockpit area controller sends an alarm prompt to a driver instrument and a central control instrument.
Judging whether the slope exists or not, if a false alarm occurs, normally driving; and (4) judging that no gradient exists, and sending an alarm prompt to a driver instrument and a central control instrument when the water storage kettle 1 is in short of liquid.
The present invention provides an apparatus and method for monitoring a cooling system of an electric vehicle. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. An electric vehicle cooling system monitoring device, characterized in that: including retaining kettle (1), be provided with liquid-gas circulation structure on retaining kettle (1), liquid-gas circulation structure includes drainage tube (2), drainage tube (2) set up in retaining kettle (1), drainage tube (2) are used for the coolant liquid-gas mixture abundant separation with the car cooling system backward flow, avoid coolant liquid-gas mixture to erode the kettle wall, cause the noise.
2. An electric vehicle cooling system monitoring apparatus as claimed in claim 1, characterized in that: the water storage pot (1) is internally provided with a plurality of separation chambers (11) for separating the inside of the pot body and separating high-pressure liquid-gas mixtures, so that the phenomenon that the liquid level rises due to excessive high-pressure gas in cooling liquid entering the water storage pot (1) and the pin type liquid level sensor (6) misjudges is avoided;
the bottoms of the separation chambers (11) are communicated with each other, and the liquid-gas circulation structure is connected with the separation chambers (11).
3. An electric vehicle cooling system monitoring device according to claim 2, characterized in that: the water storage kettle (1) comprises an upper kettle body (12) and a lower kettle body (13), wherein the upper kettle body (12) is fixedly connected with the lower kettle body (13); the liquid-gas circulation structure comprises a filling port (3), a degassing port (4) and a water replenishing port (5), wherein the filling port (3) is arranged at the top of an upper kettle body (12), the degassing port (4) is arranged at one side of the upper kettle body (12), the water replenishing port (5) is arranged at the bottom of one side of a lower kettle body (13), and the filling port (3), the degassing port (4) and the water replenishing port (5) are respectively positioned in different separation chambers (11).
4. An electric vehicle cooling system monitoring apparatus according to any one of claim 3, characterized in that: the drainage tube (2) is connected with the degassing port (4).
5. An electric vehicle cooling system monitoring device according to claim 1, characterized in that: the kettle is characterized in that a needle insertion type liquid level sensor (6) is fixedly connected to the upper kettle body (12), a probe (61) is fixedly connected to the bottom of the needle insertion type liquid level sensor (6), the probe (61) is located in the water storage kettle (1), and a sealing ring (62) is sleeved on the probe (61).
6. A method of monitoring an electric vehicle cooling system, characterized by: an electric vehicle cooling system monitoring apparatus as applied to any one of claims 1-5, the method comprising:
the contact pin type liquid level sensor collects a liquid level signal and transmits the liquid level signal to the thermal management controller;
the thermal management controller judges the liquid level signal according to a preset algorithm, generates different signals according to a judgment result and uploads the different signals to the whole vehicle controller;
the vehicle control unit further judges the signal, determines the condition of the cooling liquid in the water storage pot, and decides whether to send an alarm prompt to a driver instrument and a central control instrument.
7. The electric vehicle cooling system monitoring method according to claim 6, characterized in that: the thermal management controller judges the liquid level signal according to a preset algorithm, and the judgment comprises the following steps:
comparing the liquid level signal with a preset liquid level value, and when the liquid level signal is lower than the preset liquid level value, the thermal management controller uploads a liquid shortage signal to a vehicle controller;
or the liquid level signal is higher than a preset liquid level value, and the heat management controller uploads a sensor signal value to the vehicle controller.
8. The electric vehicle cooling system monitoring method according to claim 7, characterized in that: the vehicle control unit is right the signal further judges, confirms the coolant liquid condition in the kettle that impounds, whether decision-making sends the warning to driver's instrument, well accuse instrument and reminds, includes:
the vehicle control unit receives the liquid shortage signal, communicates with a gyroscope in an automobile chassis area to acquire gradient data of the vehicle, and determines whether a false alarm occurs according to the gradient condition of the vehicle;
or the vehicle control unit receives the sensor signal value, the vehicle control unit uploads the sensor signal value to the cockpit area controller, and the cockpit area controller displays the sensor signal value on a driver instrument and a central control instrument.
9. The electric vehicle cooling system monitoring method according to claim 8, characterized in that: determining whether a false alarm has occurred based on a grade condition of the vehicle, comprising:
when the gradient data shows that the vehicle has a gradient, judging that a false alarm occurs and the liquid level is normal;
or when the gradient data show that the vehicle has no gradient, the real shortage of the water storage kettle is judged, the vehicle control unit uploads a cooling liquid alarm signal to the cockpit area controller, and the cockpit area controller sends an alarm prompt to the driver instrument and the central control instrument.
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| CN202211192933.6A CN115790009A (en) | 2022-09-28 | 2022-09-28 | Monitoring device and method for electric vehicle cooling system |
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| CN202211192933.6A CN115790009A (en) | 2022-09-28 | 2022-09-28 | Monitoring device and method for electric vehicle cooling system |
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| CN209637872U (en) * | 2019-02-26 | 2019-11-15 | 宁波吉利汽车研究开发有限公司 | A kind of motor expansion box assembly |
| CN211573631U (en) * | 2019-11-12 | 2020-09-25 | 宝能(广州)汽车研究院有限公司 | Expansion kettle, thermal management system and new energy automobile |
| CN210948875U (en) * | 2019-11-26 | 2020-07-07 | 杭州钱江汽配电器有限公司 | Automobile expansion auxiliary water tank assembly with liquid level induction |
| CN112477699A (en) * | 2020-12-04 | 2021-03-12 | 安徽江淮汽车集团股份有限公司 | Thermal management system, control method and device, storage medium and vehicle |
| CN113834546A (en) * | 2021-08-12 | 2021-12-24 | 东风电驱动***有限公司 | Liquid level display device and method based on gyroscope |
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