WO2021098232A1 - Procédé de détection d'anomalie d'une conduite de dissipation de chaleur, radiateur refroidi par eau et automobile - Google Patents

Procédé de détection d'anomalie d'une conduite de dissipation de chaleur, radiateur refroidi par eau et automobile Download PDF

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Publication number
WO2021098232A1
WO2021098232A1 PCT/CN2020/101123 CN2020101123W WO2021098232A1 WO 2021098232 A1 WO2021098232 A1 WO 2021098232A1 CN 2020101123 W CN2020101123 W CN 2020101123W WO 2021098232 A1 WO2021098232 A1 WO 2021098232A1
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WO
WIPO (PCT)
Prior art keywords
temperature
heat dissipation
water
heating device
pipeline
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Application number
PCT/CN2020/101123
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English (en)
Chinese (zh)
Inventor
刘钧
冯颖盈
姚顺
张昌盛
Original Assignee
深圳威迈斯新能源股份有限公司
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Publication of WO2021098232A1 publication Critical patent/WO2021098232A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/002—Thermal testing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles

Definitions

  • the present invention relates to a pipeline radiator with liquid flow, in particular to a detection method for abnormality of a pipeline radiator with liquid flow, a water-cooled radiator adopting the detection method, and an automobile adopting the pipeline radiator.
  • the method for detecting abnormality of the heat dissipation pipeline provided by the present invention includes the steps:
  • Step 1 Set heating devices on the pipeline
  • Step 2 Detect the first temperature at the inlet of the pipeline and the second temperature at the heating device in each cycle;
  • Step 3 When any one of the first temperature, the second temperature, and the difference between the first temperature and the second temperature is greater than or equal to the respective preset value, it is determined that the pipeline is abnormal and enters a fault state.
  • the heating device stops working.
  • the heating device reduces the working power, otherwise it exits the fault state.
  • the heating device is arranged on the outer wall of the pipeline.
  • heating devices there are multiple heating devices, and when any one heating device is controlled to stop working, other heating devices are controlled to stop working.
  • the water-cooled radiator provided by the present invention includes a heat dissipation pipe, and the abnormal condition of the heat dissipation pipe is detected by using the detection method described in the above technical solution.
  • the water-cooled radiator includes: a first temperature sensor for detecting the first temperature, a second temperature sensor for detecting the second temperature, and receiving detections from the first and second temperature sensors As a result, a controller that controls the corresponding heating device.
  • the controller controls any one of the heating devices to stop working
  • the controller controls the water-cooled radiator to stop working
  • the controller controls any one of the heating devices to stop working
  • the controller controls the water-cooled radiator to reduce the working power
  • the automobile proposed by the present invention includes an electrical system, and the electrical system adopts the water-cooled radiator described in the above technical solution.
  • the heating device is a component that requires heat dissipation in an electrical system.
  • the detection method of the present invention is simple and feasible, and the range of the radiating pipe covered can be very comprehensive, and the operability is strong.
  • the object that needs heat dissipation can be used as a heating device, which is beneficial to the object itself, and can effectively detect abnormal conditions of the heat dissipation pipeline.
  • the detection method and protection measures of the present invention can ensure that the module has no water or other heat dissipation in the water channel. Reliability under abnormal conditions to ensure safe use.
  • Fig. 1 is a schematic diagram of a heat dissipation duct according to a first embodiment of the present invention.
  • Figure 2 is a flow chart of the failure judgment of the present invention.
  • Fig. 3 is a schematic diagram of a heat dissipation pipe according to a second embodiment of the present invention.
  • Figure 4 is a flow chart of the protection measures of the present invention.
  • Fig. 1 is a schematic diagram of a part of the pipeline of the pipeline radiator of the present invention.
  • a first temperature sensor 1 is provided at the entrance of the heat dissipation pipe of the pipe radiator, that is, the first temperature sensor 1 is close to the water inlet, and a heating device 3 is provided outside the heat dissipation pipe, and the heat dissipation pipe corresponding to the heating device is provided
  • the second temperature sensor 2 2.
  • the first temperature sensor and the second temperature sensor detect the first temperature T1 at the pipe entrance and the second temperature T2 at the heating device in each time period.
  • the difference between the first temperature T1 and the second temperature T2 is recorded as ⁇ T .
  • Count the maximum values of T1, T2, and ⁇ T under different working conditions denoted as T1normalmax, T2normalmax and ⁇ Tnormalmax.
  • the heat dissipation liquid such as water in the pipeline is in a circulating state, and the heat generated by the heating device will be quickly taken away by the water in the pipeline.
  • the first temperature T1 and the second temperature T2 are not much different when the heat dissipation pipe works normally. Therefore, the values of the first temperature T1 and the second temperature T2 and their difference ⁇ T will all be within the normal range, that is, less than their respective preset values.
  • the specific water channel heat dissipation abnormalities are as follows: there is no water in the heat dissipation pipe; the heat dissipation pipe has water but does not circulate ; The heat dissipation pipe has water but the circulating flow rate is insufficient; the heat dissipation pipe works normally, but the characteristics of the coolant in the heat dissipation pipe are abnormal; the heat dissipation pipe is cooled normally, but the heating device heats abnormally, which causes the heat dissipation pipe to fail to effectively dissipate heat.
  • the water flow rate is too low, and other abnormal heat dissipation conditions of the heat dissipation pipe, if the heat conductivity of the heat dissipation pipe body is good, the first temperature will be caused due to the lack of water flow for heat dissipation.
  • T1 and the second temperature T2 gradually rise, and the first temperature T1 eventually exceeds its corresponding preset value T1normalmax. At this time, the water channel heats up abnormally.
  • the heat dissipation pipe has abnormal heat dissipation
  • the thermal conductivity of the body is poor, and the heat of the heating device will accumulate at the second temperature sensor.
  • the temperature of the second temperature T2 is gradually higher than the first temperature T1
  • the difference ⁇ T between the first temperature and the second temperature will gradually increase, and the final difference ⁇ T exceeds its corresponding preset value ⁇ Tnormalmax.
  • the water channel heats up abnormally.
  • Both of the above judgment methods require the module to work for a period of time to judge.
  • the heat dissipation of the water channel is abnormal, there is a possibility that the temperature of the second temperature T2 itself has exceeded its corresponding preset value T2normalmax within this period of time. Increase the judgment of the second temperature T2. If the second temperature T2>the preset value T2normalmax, the water channel heat dissipation is abnormal.
  • the controller of the pipe radiator can determine whether the first temperature T1 is greater than or equal to its corresponding preset value, and whether the second temperature is greater than or equal to its corresponding preset value. Whether the difference between the temperatures is greater than or equal to the corresponding preset value, when any one of the first temperature, the second temperature, and the difference between the first temperature and the second temperature is greater than or equal to the respective preset value, It is determined that the liquid flow of the pipeline is abnormal and enters a fault state.
  • Figure 3 shows a complex system with multiple heating points, which is suitable for a relatively complex pipeline structure (the complex pipeline structure is not shown in the figure).
  • the second temperature sensor detects the second temperature at the heating device again within a certain period of time. If the second temperature T2 is greater than or equal to its corresponding preset value, the heat inside the heat dissipation pipe is severely heated, and the controller controls the entire pipe radiator or the heating device whose current temperature exceeds the limit to stop working, or all the heating devices stop working.
  • the first temperature T1 is detected again to determine whether the current first temperature T1 or the difference between the current first temperature and the second temperature is greater than or equal to Each corresponding preset value, if it is, it means that only the heat dissipation pipe has poor heat dissipation, and the heat exchange of the part to be cooled with the pipe radiator does not affect its working reliability.
  • the controller can control all the heating devices to reduce the working power, or control the whole The pipe radiator reduces the working power, or sends out a reminder. If the first temperature is less than its corresponding preset value, and the difference between the first temperature and the second temperature is less than the corresponding preset value, exit the fault state.
  • the heating element is arranged on the outer wall of the heat dissipation pipe.
  • the pipe radiator of the present invention may be a water-cooled radiator or other types of pipe radiators, which has a heat dissipation pipe.
  • the water-cooled radiator adopts the technical scheme of the present invention to detect whether the heat dissipation pipe is abnormal.
  • the heat-dissipating liquid in the heat-dissipating pipe can also be other cooling liquids, such as refrigerants.
  • the water-cooled radiator can also be further applied in automobiles, especially new energy vehicles, including electrical systems.
  • the electrical system adopts this water-cooled radiator, which also belongs to the protection scope of the present invention, for example, automobile motors, motor control Chargers, on-board chargers, DCDC converters, and water-cooled charging piles.
  • the parts in the electrical system that need to be dissipated to the water-cooled radiator can be used as heating components, without adding new heat, and at the same time, it can be better for the electrical system. Heat dissipation.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

La présente invention concerne un procédé de détection d'anomalie dans l'écoulement de liquide d'une conduite de dissipation de chaleur, un radiateur refroidi par eau et une automobile. Le procédé de détection d'anomalie d'écoulement de liquide de la conduite de dissipation de chaleur comprend les étapes suivantes : S1, agencer un dispositif de chauffage sur la conduite ; S2, détecter une première température au niveau d'une entrée de la conduite et une seconde température au niveau du dispositif de chauffage dans chaque période ; et S3, lorsque l'une quelconque de la première température, la seconde température et une valeur de différence entre la première température et la seconde température est supérieure ou égale à une valeur prédéfinie correspondante, déterminer que l'écoulement de liquide de la conduite est anormal et déclencher un état de panne. La présente invention peut déterminer avec précision une situation d'anomalie de flux de liquide d'une conduite de dissipation de chaleur, produire une invite ou réaliser un traitement en temps opportun, pour assurer ainsi la stabilité fonctionnelle de refroidissement d'un appareil de dissipation de chaleur.
PCT/CN2020/101123 2019-11-19 2020-07-09 Procédé de détection d'anomalie d'une conduite de dissipation de chaleur, radiateur refroidi par eau et automobile WO2021098232A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911135912.9 2019-11-19
CN201911135912.9A CN110715818A (zh) 2019-11-19 2019-11-19 散热管道异常的检测方法、水冷型散热器、汽车

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CN110715818A (zh) * 2019-11-19 2020-01-21 深圳威迈斯新能源股份有限公司 散热管道异常的检测方法、水冷型散热器、汽车
CN111506042A (zh) * 2020-03-27 2020-08-07 广州高澜节能技术股份有限公司 一种agv自动引导车辆液冷系统的控制方法及系统
CN112649184A (zh) * 2020-12-22 2021-04-13 青岛海尔空调电子有限公司 散热器散热能力的测试方法、测试装置和测试盒
CN112649185A (zh) * 2020-12-22 2021-04-13 青岛海尔空调电子有限公司 散热器散热能力的测试方法、测试装置和测试盒
CN113008412A (zh) * 2021-03-17 2021-06-22 阳光电源股份有限公司 风道散热异常的检测方法、装置、系统及可读存储介质
CN113163684A (zh) * 2021-04-07 2021-07-23 深圳威迈斯新能源股份有限公司 水冷降温车载转换器装置及其控制方法

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