CN116544564A - Test method and device for liquid cooling and heating management of vehicle, liquid cooling unit and electronic equipment - Google Patents

Test method and device for liquid cooling and heating management of vehicle, liquid cooling unit and electronic equipment Download PDF

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Publication number
CN116544564A
CN116544564A CN202310525973.6A CN202310525973A CN116544564A CN 116544564 A CN116544564 A CN 116544564A CN 202310525973 A CN202310525973 A CN 202310525973A CN 116544564 A CN116544564 A CN 116544564A
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China
Prior art keywords
battery
liquid cooling
temperature
cooling unit
tested
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Pending
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CN202310525973.6A
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Chinese (zh)
Inventor
李晓侠
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Chuneng New Energy Co Ltd
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Chuneng New Energy Co Ltd
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Priority to CN202310525973.6A priority Critical patent/CN116544564A/en
Publication of CN116544564A publication Critical patent/CN116544564A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • G01K13/026—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving liquids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings

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  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)

Abstract

The invention provides a testing method and device for liquid cooling and heating management of a vehicle, a liquid cooling unit and electronic equipment, wherein the testing method comprises the following steps: acquiring the battery temperature and the battery charge state of the battery to be measured in the charging and discharging process of the battery to be measured; if the battery temperature is in the set temperature interval and the battery state of charge is greater than the first set state of charge, acquiring the water inlet temperature of the liquid cooling unit; controlling the operation mode of the liquid cooling unit according to the temperature of the water inlet so as to adjust the battery temperature of the battery to be tested; and under the condition that the temperature of the battery is less than or equal to the set temperature, controlling the liquid cooling unit to be shut down. Therefore, the liquid cooling unit takes the temperature of the water inlet as a judging standard for switching the operation mode to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.

Description

Test method and device for liquid cooling and heating management of vehicle, liquid cooling unit and electronic equipment
Technical Field
The invention relates to the technical field of testing, in particular to a testing method and device for liquid cooling and heating management of a vehicle, a liquid cooling unit and electronic equipment.
Background
According to the characteristics of the lithium battery, the lithium battery cannot be charged or discharged at an excessively high or low temperature, and thus thermal management is required during the charge and discharge of the lithium battery. In general, thermal management policies require testing of the rationality of the thermal management policies in a real environment after software writing. However, the conventional function of the cooling unit for testing in the market at present can only detect the temperature and cannot execute the thermal management instruction, so how to test the thermal management of the liquid cooling unit in the actual environment is a problem to be solved urgently.
Disclosure of Invention
The present invention aims to solve the technical problems in the related art to some extent.
Therefore, a first object of the present invention is to provide a method for testing liquid cooling and heating management of a vehicle, in which the liquid cooling unit uses the temperature of a water inlet as a judging standard for switching operation modes to perform a thermal management test, so as to improve the rationality and convenience of the thermal management test of the liquid cooling unit.
The second object of the present invention is to provide a testing device for liquid cooling and heating management of a vehicle.
A third object of the present invention is to propose an electronic device.
A fourth object of the present invention is to provide a liquid cooling unit.
A fifth object of the present invention is to propose a computer readable storage medium.
A sixth object of the invention is to propose a computer programme product.
In order to achieve the above objective, an embodiment of a first aspect of the present invention provides a testing method for liquid cooling and heating management for a vehicle, including the following steps: acquiring the battery temperature and the battery charge state of the battery to be tested in the charging and discharging process of the battery to be tested; if the battery temperature is in a set temperature interval and the battery state of charge is greater than a first set state of charge, acquiring the water inlet temperature of the liquid cooling unit; controlling the operation mode of the liquid cooling unit according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested; and controlling the liquid cooling unit to be shut down under the condition that the temperature of the battery is less than or equal to the set temperature.
According to the test method for the vehicular liquid cooling and heating management, in the charging and discharging process of the battery to be tested, the battery temperature and the battery charge state of the battery to be tested are obtained, if the battery temperature is in a set temperature interval and the battery charge state is larger than the first set charge state, the water inlet temperature of the liquid cooling unit is obtained, the operation mode of the liquid cooling unit is controlled according to the water inlet temperature, so that the battery temperature of the battery to be tested is regulated, and the shutdown of the liquid cooling unit is controlled under the condition that the battery temperature is smaller than or equal to the set temperature. Therefore, the liquid cooling unit takes the temperature of the water inlet as a judging standard for switching the operation mode to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
In addition, the testing method for vehicular liquid cooling and heating management provided by the embodiment of the first aspect of the invention can also have the following additional technical characteristics:
according to one embodiment of the present invention, the controlling the operation mode of the liquid cooling unit according to the water inlet temperature includes:
controlling the liquid cooling unit to operate in a cooling mode under the condition that the temperature of the water inlet is greater than or equal to the set target temperature;
in the process that the liquid cooling unit operates in the cooling mode, if the temperature of the water inlet is reduced to be smaller than the set target temperature, the operation mode of the liquid cooling unit is adjusted to be a self-circulation mode; the self-circulation mode is used for representing a circulation mode that the liquid cooling unit is not started to cool, and liquid pump in the liquid cooling unit is used for carrying out liquid cooling.
According to one embodiment of the present invention, the controlling the operation mode of the liquid cooling unit according to the water inlet temperature includes:
controlling the liquid cooling unit to operate in a self-circulation mode under the condition that the temperature of the water inlet is smaller than the set target temperature;
and in the process of operating the liquid cooling unit in the self-circulation mode, if the inlet temperature is increased to be greater than or equal to the set target temperature, adjusting the operation mode of the liquid cooling unit into a cooling mode.
According to one embodiment of the present invention, after the operation mode of the liquid cooling unit is adjusted, the method further includes:
and controlling the liquid cooling energy unit to continue to operate in the adjusted operation mode for a first set period of time.
According to an embodiment of the present invention, before the controlling the liquid cooling unit to shut down, the method further includes:
and controlling the liquid cooling energy unit to operate in a self-circulation mode for a second set period of time.
According to one embodiment of the present invention, the charging and discharging process of the battery to be tested includes:
discharging the battery to be tested with a first set current until the single voltage is the first set voltage;
standing the battery to be tested for a third set time period;
the battery to be tested is charged by a second set current until the single voltage is the second set voltage;
the battery to be tested is charged by a third set current until the single voltage is the third set voltage;
standing the battery to be tested for a fourth set time period;
discharging with the first set current when the battery to be tested is full, until the single voltage is the first set voltage;
standing the battery to be tested for a fifth set time period;
and charging the battery to be tested with a third set current until the state of charge is the second set state of charge.
In order to achieve the above object, a second aspect of the present invention provides a testing device for liquid cooling and heating management for a vehicle, including: the first acquisition module is used for acquiring the battery temperature and the battery charge state of the battery to be detected in the charging and discharging process of the battery to be detected; the second acquisition module is used for acquiring the water inlet temperature of the liquid cooling unit when the battery temperature is in a set temperature interval and the battery state of charge is greater than the first set state of charge; the first control module is used for controlling the operation mode of the liquid cooling unit according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested; and the second control module is used for controlling the liquid cooling unit to be shut down under the condition that the temperature of the battery is less than or equal to the set temperature.
According to the testing device for the vehicular liquid cooling and heating management, the battery temperature and the battery charge state of the battery to be tested are obtained in the charging and discharging process of the battery to be tested through the first obtaining module, when the battery temperature is in a set temperature interval and the battery charge state is larger than the first set charge state, the water inlet temperature of the liquid cooling unit is obtained through the second obtaining module, the operation mode of the liquid cooling unit is controlled through the first control module according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested, and the liquid cooling unit is controlled to be shut down under the condition that the battery temperature is smaller than or equal to the set temperature through the second control module. Therefore, the device uses the temperature of the water inlet as a judging standard for switching the operation mode by the liquid cooling unit so as to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
In addition, the testing device for liquid cooling and heating management for a vehicle according to the second aspect of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, when the first control module is configured to control the operation mode of the liquid cooling unit according to the water inlet temperature, the first control module includes:
controlling the liquid cooling unit to operate in a cooling mode under the condition that the temperature of the water inlet is greater than or equal to the set target temperature;
in the process that the liquid cooling unit operates in the cooling mode, if the temperature of the water inlet is reduced to be smaller than the set target temperature, the operation mode of the liquid cooling unit is adjusted to be a self-circulation mode; the self-circulation mode is used for representing a circulation mode that the liquid cooling unit is not started to cool, and liquid pump in the liquid cooling unit is used for carrying out liquid cooling.
According to an embodiment of the present invention, when the first control module is configured to control the operation mode of the liquid cooling unit according to the water inlet temperature, the first control module includes:
controlling the liquid cooling unit to operate in a self-circulation mode under the condition that the temperature of the water inlet is smaller than the set target temperature;
and in the process of operating the liquid cooling unit in the self-circulation mode, if the inlet temperature is increased to be greater than or equal to the set target temperature, adjusting the operation mode of the liquid cooling unit into a cooling mode.
According to one embodiment of the present invention, the first control module is configured to, after adjusting the operation mode of the liquid cooling unit, further:
and controlling the liquid cooling energy unit to continue to operate in the adjusted operation mode for a first set period of time.
According to an embodiment of the present invention, the second control module is configured to, before controlling the liquid cooling unit to shut down, further:
and controlling the liquid cooling energy unit to operate in a self-circulation mode for a second set period of time.
According to one embodiment of the present invention, the charging and discharging process of the battery to be tested includes:
discharging the battery to be tested with a first set current until the single voltage is the first set voltage;
standing the battery to be tested for a third set time period;
the battery to be tested is charged by a second set current until the single voltage is the second set voltage;
the battery to be tested is charged by a third set current until the single voltage is the third set voltage;
standing the battery to be tested for a fourth set time period;
discharging with the first set current when the battery to be tested is full, until the single voltage is the first set voltage;
standing the battery to be tested for a fifth set time period;
and charging the battery to be tested with a third set current until the state of charge is the second set state of charge.
To achieve the above object, an embodiment of a third aspect of the present invention provides an electronic device, including: a processor and a memory; the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the testing method of the liquid cooling and heating management of the vehicle according to the embodiment of the first aspect.
According to the electronic equipment provided by the embodiment of the invention, the liquid cooling unit is used for taking the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
In order to achieve the above object, a fourth aspect of the present invention provides a liquid cooling unit, which includes the above electronic device.
According to the liquid cooling unit provided by the embodiment of the invention, the water inlet temperature is used as the judgment standard for switching the operation mode so as to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
To achieve the above object, an embodiment of a fifth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the testing method for liquid cooling and heating management for a vehicle of the embodiment of the first aspect.
According to the computer readable storage medium, the liquid cooling unit is used for taking the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
To achieve the above object, an embodiment of the sixth aspect of the present invention provides a computer program product, which when executed by an instruction processor in the computer program product, performs the testing method for liquid cooling and heating management for a vehicle according to the embodiment of the first aspect.
According to the computer program product provided by the embodiment of the invention, the liquid cooling unit takes the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Additional aspects and advantages of the invention 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 invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a test method for vehicular liquid cooling and heating management according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a test system for vehicular liquid chiller-heater management according to one embodiment of the present invention;
fig. 3 is a flowchart of a battery charge and discharge process according to an embodiment of the present invention;
FIG. 4 is a flow chart of a test method for vehicular liquid chiller-heater management according to one embodiment of the present invention;
fig. 5 is a block schematic diagram of a testing device for vehicular liquid cooling and heating management according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes a testing method, a testing device, a liquid cooling unit and electronic equipment for vehicular liquid cooling and heating management according to an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a flowchart of a testing method for vehicular liquid cooling and heating management according to an embodiment of the present invention.
As shown in fig. 1, the testing method for vehicular liquid cooling and heating management according to the embodiment of the invention includes:
s101, acquiring the battery temperature and the battery charge state of the battery to be tested in the charging and discharging process of the battery to be tested.
Before testing the battery to be tested, the charging and discharging cabinet, the battery Pack to be tested, the water cooling plate and the liquid cooling unit are connected, specifically as shown in fig. 2, the battery Pack to be tested comprises a lithium battery module C1 and a battery manager BMS, the positive electrode end of the charging and discharging cabinet is connected with the positive electrode end of the lithium battery module C1 through a charging and discharging line Z1, the negative electrode end of the charging and discharging cabinet is connected with the negative electrode end of the lithium battery module C1 through a charging and discharging line Z1, and the battery manager BMS is connected with the communication end of the charging and discharging cabinet through a communication line X1. The water inlet of the liquid cooling unit is connected with the water cooling plate water inlet S1 of the water cooling plate S3 through the liquid cooling water pipe G1, and the water inlet of the liquid cooling unit is connected with the water cooling plate water outlet S2 of the water cooling plate S3 through the liquid cooling water pipe G1. The three main contacts are hung on the communication line X1 of the embodiment of the invention so as to realize the connection of the charge and discharge cabinet, the battery Pack to be tested, the water cooling plate and the liquid cooling unit, avoid untimely communication among devices and improve the communication stability.
After the connection of the charging and discharging cabinet, the battery Pack to be tested, the water cooling plate and the liquid cooling unit is finished, the battery to be tested is charged and discharged through the charging and discharging cabinet, the battery temperature is obtained through a temperature sensor arranged on the lithium battery module C1 and is sent to the battery manager BMS, and the battery temperature and the battery state of charge are obtained in real time through the battery manager BMS and are sent to the liquid cooling unit.
S102, if the battery temperature is in a set temperature interval and the battery state of charge is greater than a first set state of charge, acquiring the water inlet temperature of the liquid cooling unit. The set temperature interval and the first set state of charge may be set according to actual needs, for example, the set temperature interval may be [35 ℃,55 ℃) and the first set state of charge may be 5%.
For example, the temperature of the water inlet of the liquid cooling unit may be obtained by a temperature sensor provided at the water inlet of the liquid cooling unit, and transmitted to the liquid cooling unit.
In the step, after the battery temperature and the battery state of charge are obtained, the liquid cooling unit judges whether the battery temperature is in a set temperature interval (35 ℃ and 55 ℃) and judges whether the battery state of charge is greater than 5% of a first set state of charge, if the battery temperature is in the set temperature interval (35 ℃ and 55 ℃) and the battery state of charge is greater than 5% of the first set state of charge, the liquid cooling unit automatically starts thermal management under the condition that a battery manager BMS is not required to upload an on or off instruction, and after the liquid cooling unit enters the thermal management, the liquid cooling unit obtains the water inlet temperature in real time.
S103, controlling the operation mode of the liquid cooling unit according to the temperature of the water inlet so as to adjust the battery temperature of the battery to be tested.
In the step, after the liquid cooling unit obtains the water inlet temperature, the magnitude relation between the water inlet temperature and the set target temperature is compared, and the operation mode of the liquid cooling unit is controlled according to the comparison result so as to adjust the battery temperature of the battery to be measured.
When the temperature of the water inlet is greater than or equal to the set target temperature (such as 20 ℃), the liquid cooling unit starts a cooling mode, the water inlet temperature is continuously obtained in real time in the running process of the liquid cooling unit in the cooling mode, the size relation between the water inlet temperature and the set target temperature of 20 ℃ is compared, if the water inlet temperature is reduced to be less than the set target temperature of 20 ℃, the running mode of the liquid cooling unit is adjusted from the cooling mode to a non-starting cooling mode, and only the liquid pump in the liquid cooling unit is used for carrying out a liquid cooling self-circulation mode.
When the water inlet temperature is lower than the set target temperature of 20 ℃, the liquid cooling unit starts a self-circulation mode, the water inlet temperature is continuously obtained in real time in the running process of the liquid cooling unit in the self-circulation mode, the size relation between the water inlet temperature and the set target temperature of 20 ℃ is compared, and if the water inlet temperature is increased to be higher than or equal to the set target temperature of 20 ℃, the running mode of the liquid cooling unit is adjusted from the self-circulation mode to the cooling mode.
In order to avoid repeated switching of the operation mode of the liquid cooling unit caused by rebound of the temperature of the water inlet, the invention controls the liquid cooling unit to continue to operate in the adjusted operation mode for a first set period of time after the operation mode of the liquid cooling unit is adjusted. The invention carries out time delay processing when the operation mode is switched, thereby further improving the rationality of the test.
S104, controlling the liquid cooling unit to be shut down under the condition that the temperature of the battery is less than or equal to the set temperature.
In the step, the temperature of the battery is regulated in the running process of the liquid cooling unit in a cooling mode or a self-circulation mode, so that the temperature of the battery needs to be obtained in real time in the working process of the liquid cooling unit, whether the temperature of the battery is reduced to be less than or equal to a set temperature or not is judged, and if so, the liquid cooling unit is controlled to be shut down.
In order to avoid the rapid rise of the battery temperature, the invention turns off the heat management after entering the self-circulation mode to operate for a second set period of time no matter whether the operation mode before the liquid cooling unit is the cooling mode or the self-circulation mode.
Therefore, in the testing method for the vehicular liquid cooling and heating management, in the charging and discharging process of the battery to be tested, the battery temperature and the battery charge state of the battery to be tested are obtained, if the battery temperature is in a set temperature interval and the battery charge state is larger than the first set charge state, the water inlet temperature of the liquid cooling unit is obtained, and then the water inlet temperature is used as a judging standard for switching the operation mode so as to test the thermal management, so that the rationality and convenience of the thermal management testing of the liquid cooling unit are improved.
Fig. 3 is a flowchart of a charging and discharging process of a battery to be measured according to an embodiment of the present invention.
As shown in fig. 3, a charging and discharging process of a battery to be tested according to an embodiment of the present invention includes:
s301, connecting the charge and discharge cabinet, the battery Pack to be tested, the water cooling plate and the liquid cooling unit. For example, the connection relationship is as shown in fig. 2.
S302, discharging the battery to be tested which leaves the factory with a first set current (such as working condition current) until the voltage of the single battery is the first set voltage (such as 2.5V).
S303, the battery to be tested is kept stand for a third set period of time (such as 15 minutes).
S304, the battery to be tested is charged with a second set current (for example, a current of 1.2C required by a customer) until the cell voltage is a second set voltage (for example, 3.55V).
S305, the battery to be tested is charged with a third set current (e.g. 0.1C) until the cell voltage is the third set voltage (e.g. 3.6V).
S306, the battery to be tested stands still for a fourth set period of time (e.g. 15 minutes).
S307, discharging with the first set current (such as working condition current) after the battery to be tested is full, until the single voltage is the first set voltage (such as 2.5V).
S308, the battery to be tested stands still for a fifth set period (such as 15 minutes).
S309, the battery to be tested is charged with a third set current (e.g. 0.5C) until the state of charge is the second set state of charge (e.g. 50%).
It should be noted that, in the charge and discharge process of the battery to be tested, two discharges are set, so that a test error generated in a single discharge test can be avoided, and the test accuracy is improved.
To make the person skilled in the art more clearly understand the present invention, fig. 4 is a flowchart of a testing method for vehicular liquid cooling and heating management according to an embodiment of the present invention, as shown in fig. 4, the testing method for vehicular liquid cooling and heating management according to an embodiment of the present invention includes:
s401, determining that the temperature of the battery is 35 ℃ and 55 ℃ and the state of charge is more than or equal to 5%, and starting thermal management.
S402, determining the size relation between the water inlet temperature and the set target temperature of 20 ℃.
After step S402, step S403 or step S405 is performed.
S403, determining that the temperature of the water inlet is more than or equal to 20 ℃.
S404, the liquid cooling unit starts a cooling mode.
S405, determining that the water inlet temperature is less than 20 ℃.
S406, the liquid cooling unit starts a self-circulation mode.
The liquid cooling unit is switched from the cooling mode to the self-circulation mode when the water inlet temperature is lower than 20 ℃ in the operation process after the liquid cooling unit is started in the cooling mode, and the operation mode can be switched after the liquid cooling unit is switched to the operation mode and is delayed for 3min in the self-circulation mode. And in the running process of the liquid cooling unit after being started in the self-circulation mode, the temperature of the water inlet can be increased until the temperature of the water inlet is more than or equal to 20 ℃, the liquid cooling unit is converted from the self-circulation mode to the cooling mode, and after the running mode is converted, the running mode can be converted after the liquid cooling unit is delayed for 3 minutes in the cooling mode.
S407, until the temperature of the battery is less than or equal to 28 ℃.
S408, entering a self-circulation mode to run for 3min.
S409, closing the thermal management.
In summary, according to the test method for vehicular liquid cooling and heating management of the embodiment of the present invention, during the charge and discharge of the battery to be tested, the battery temperature and the battery state of charge of the battery to be tested are obtained, if the battery temperature is in the set temperature interval and the battery state of charge is greater than the first set state of charge, the water inlet temperature of the liquid cooling unit is obtained, and the operation mode of the liquid cooling unit is controlled according to the water inlet temperature, so as to adjust the battery temperature of the battery to be tested, and if the battery temperature is less than or equal to the set temperature, the liquid cooling unit is controlled to be powered off. Therefore, the liquid cooling unit takes the temperature of the water inlet as a judging standard for switching the operation mode to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Fig. 5 is a block schematic diagram of a testing device for vehicular liquid cooling and heating management according to an embodiment of the present invention.
As shown in fig. 5, a testing device 500 for vehicular liquid cooling and heating management according to an embodiment of the present invention includes: a first acquisition module 510, a second acquisition module 520, a first control module 530, and a second control module 540.
The first obtaining module 510 is configured to obtain a battery temperature and a battery state of charge of the battery to be measured during a charging and discharging process of the battery to be measured. The second obtaining module 520 is configured to obtain the water inlet temperature of the liquid cooling unit when the battery temperature is within the set temperature range and the battery state of charge is greater than the first set state of charge. The first control module 530 is configured to control an operation mode of the liquid cooling unit according to the water inlet temperature, so as to adjust a battery temperature of the battery to be measured. The second control module 540 is configured to control the liquid cooling unit to shut down when the battery temperature is less than or equal to the set temperature.
According to an embodiment of the present invention, the first control module 530 is configured to control an operation mode of the liquid cooling unit according to a water inlet temperature, and includes:
controlling the liquid cooling unit to operate in a cooling mode under the condition that the temperature of the water inlet is greater than or equal to the set target temperature;
in the process that the liquid cooling unit operates in the cooling mode, if the temperature of the water inlet is reduced to be smaller than the set target temperature, the operation mode of the liquid cooling unit is adjusted to be a self-circulation mode; the self-circulation mode is used for representing a circulation mode that the liquid cooling unit is not started to cool, and liquid pump in the liquid cooling unit is used for cooling liquid.
According to an embodiment of the present invention, the first control module 530 is configured to control an operation mode of the liquid cooling unit according to a water inlet temperature, and includes:
under the condition that the temperature of the water inlet is smaller than the set target temperature, controlling the liquid cooling unit to operate in a self-circulation mode;
and in the process of operating the liquid cooling unit in the self-circulation mode, if the water inlet temperature is increased to be greater than or equal to the set target temperature, adjusting the operation mode of the liquid cooling unit into a cooling mode.
According to one embodiment of the invention, the first control module 530 is configured to, after the operation mode adjustment of the liquid cooling unit, further:
and controlling the liquid cooling energy unit to continue to operate in the adjusted operation mode for a first set period of time.
According to an embodiment of the present invention, the second control module 540 is configured to, before controlling the liquid cooling unit to shut down, further:
and controlling the liquid cooling energy unit to operate in a self-circulation mode for a second set period of time.
According to one embodiment of the present invention, a charge and discharge process of a battery to be measured includes:
discharging the battery to be tested with a first set current until the single voltage is the first set voltage;
standing the battery to be tested for a third set time period;
charging the battery to be tested with a second set current until the single voltage is the second set voltage;
charging the battery to be tested with a third set current until the single voltage is the third set voltage;
standing the battery to be tested for a fourth set time period;
discharging with a first set current when the battery to be tested is full, until the single voltage is the first set voltage;
standing the battery to be tested for a fifth set period of time;
and charging the battery to be tested with a third set current until the state of charge is the second set state of charge.
It should be noted that, for details not disclosed in the testing device for vehicular liquid cooling and heating management in the embodiment of the present invention, please refer to details disclosed in the testing method for vehicular liquid cooling and heating management in the embodiment of the present invention, and details are not described here again.
According to the testing device for the vehicular liquid cooling and heating management, the battery temperature and the battery charge state of the battery to be tested are obtained in the charging and discharging process of the battery to be tested through the first obtaining module, when the battery temperature is in a set temperature interval and the battery charge state is larger than the first set charge state, the water inlet temperature of the liquid cooling unit is obtained through the second obtaining module, the operation mode of the liquid cooling unit is controlled through the first control module according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested, and the liquid cooling unit is controlled to be shut down under the condition that the battery temperature is smaller than or equal to the set temperature through the second control module. Therefore, the device uses the temperature of the water inlet as a judging standard for switching the operation mode by the liquid cooling unit so as to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Based on the embodiment, the invention further provides electronic equipment.
The electronic equipment of the embodiment of the invention comprises: a processor and a memory; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to realize the testing method of the liquid cooling and heating management of the vehicle.
According to the electronic equipment provided by the embodiment of the invention, the liquid cooling unit is used for taking the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Based on the embodiment, the invention further provides a liquid cooling unit.
In an embodiment of the present invention, a liquid cooling unit includes the above-described electronic apparatus.
According to the liquid cooling unit provided by the embodiment of the invention, the water inlet temperature is used as the judgment standard for switching the operation mode so as to perform the thermal management test, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Based on the above embodiments, the present invention also proposes a computer-readable storage medium.
The computer readable storage medium of the embodiment of the invention stores a computer program which is executed by a processor to realize the testing method for the liquid cooling and heating management of the vehicle.
According to the computer readable storage medium, the liquid cooling unit is used for taking the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
Based on the above embodiments, the present invention also proposes a computer program product.
In the embodiment of the present invention, when the instruction processor in the computer program product of the embodiment of the present invention executes the test method for liquid cooling and heating management for a vehicle described above.
According to the computer program product provided by the embodiment of the invention, the liquid cooling unit takes the water inlet temperature as the judgment standard for switching the operation mode by executing the testing method for the liquid cooling and heating management of the vehicle, so that the thermal management is tested, and the rationality and convenience of the thermal management test of the liquid cooling unit are improved.
In the description of the present specification, a description referring to terms "one embodiment," "some 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 invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and additional implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (10)

1. The testing method for the cold and hot management of the liquid for the vehicle is characterized by comprising the following steps of:
acquiring the battery temperature and the battery charge state of the battery to be tested in the charging and discharging process of the battery to be tested;
if the battery temperature is in a set temperature interval and the battery state of charge is greater than a first set state of charge, acquiring the water inlet temperature of the liquid cooling unit;
controlling the operation mode of the liquid cooling unit according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested;
and controlling the liquid cooling unit to be shut down under the condition that the temperature of the battery is less than or equal to the set temperature.
2. The method of claim 1, wherein controlling the operation mode of the liquid cooling unit according to the water inlet temperature comprises:
controlling the liquid cooling unit to operate in a cooling mode under the condition that the temperature of the water inlet is greater than or equal to the set target temperature;
in the process that the liquid cooling unit operates in the cooling mode, if the temperature of the water inlet is reduced to be smaller than the set target temperature, the operation mode of the liquid cooling unit is adjusted to be a self-circulation mode; the self-circulation mode is used for representing a circulation mode that the liquid cooling unit is not started to cool, and liquid pump in the liquid cooling unit is used for carrying out liquid cooling.
3. The method of claim 1, wherein controlling the operation mode of the liquid cooling unit according to the water inlet temperature comprises:
controlling the liquid cooling unit to operate in a self-circulation mode under the condition that the temperature of the water inlet is smaller than the set target temperature;
and in the process of operating the liquid cooling unit in the self-circulation mode, if the inlet temperature is increased to be greater than or equal to the set target temperature, adjusting the operation mode of the liquid cooling unit into a cooling mode.
4. A method according to claim 2 or 3, further comprising, after the operation mode adjustment of the liquid cooling unit:
and controlling the liquid cooling energy unit to continue to operate in the adjusted operation mode for a first set period of time.
5. The method of claim 1, wherein prior to said controlling said fluid cooling unit to shut down, further comprising:
and controlling the liquid cooling energy unit to continue to operate in a self-circulation mode for a second set period of time.
6. The method of claim 1, wherein the charging and discharging process of the battery under test comprises:
discharging the battery to be tested with a first set current until the single voltage is the first set voltage;
standing the battery to be tested for a third set time period;
the battery to be tested is charged by a second set current until the single voltage is the second set voltage;
the battery to be tested is charged by a third set current until the single voltage is the third set voltage;
standing the battery to be tested for a fourth set time period;
discharging with the first set current when the battery to be tested is full, until the single voltage is the first set voltage;
standing the battery to be tested for a fifth set time period;
and charging the battery to be tested with a third set current until the state of charge is the second set state of charge.
7. The testing device for the liquid cooling and heating management of the vehicle is characterized by comprising the following components:
the first acquisition module is used for acquiring the battery temperature and the battery charge state of the battery to be detected in the charging and discharging process of the battery to be detected;
the second acquisition module is used for acquiring the water inlet temperature of the liquid cooling unit when the battery temperature is in a set temperature interval and the battery state of charge is greater than the first set state of charge;
the first control module is used for controlling the operation mode of the liquid cooling unit according to the water inlet temperature so as to adjust the battery temperature of the battery to be tested;
and the second control module is used for controlling the liquid cooling unit to be shut down under the condition that the temperature of the battery is less than or equal to the set temperature.
8. An electronic device, comprising:
a processor and a memory;
wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory for realizing the test method of liquid-cooling and heating management for a vehicle according to any one of claims 1 to 6.
9. A liquid cooling unit comprising the electronic device according to claim 8.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the test method for liquid cooling and heating management for vehicles according to any one of claims 1 to 6.
CN202310525973.6A 2023-05-10 2023-05-10 Test method and device for liquid cooling and heating management of vehicle, liquid cooling unit and electronic equipment Pending CN116544564A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117656942A (en) * 2023-12-07 2024-03-08 汇工(河北)机械集团有限公司 Charging and cooling control method and thermal management system for electric mine card and electric mine card
CN117728074A (en) * 2024-02-18 2024-03-19 珠海格力钛电器有限公司 Control method and device for liquid cooling and temperature reduction of energy storage system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117656942A (en) * 2023-12-07 2024-03-08 汇工(河北)机械集团有限公司 Charging and cooling control method and thermal management system for electric mine card and electric mine card
CN117728074A (en) * 2024-02-18 2024-03-19 珠海格力钛电器有限公司 Control method and device for liquid cooling and temperature reduction of energy storage system
CN117728074B (en) * 2024-02-18 2024-05-03 珠海格力钛电器有限公司 Control method and device for liquid cooling and temperature reduction of energy storage system

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