CN115764082A - Temperature control method and system based on new energy automobile battery management - Google Patents
Temperature control method and system based on new energy automobile battery management Download PDFInfo
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- CN115764082A CN115764082A CN202211413095.0A CN202211413095A CN115764082A CN 115764082 A CN115764082 A CN 115764082A CN 202211413095 A CN202211413095 A CN 202211413095A CN 115764082 A CN115764082 A CN 115764082A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a temperature control method and system based on new energy automobile battery management, and relates to the technical field of battery heat dissipation. The method comprises the steps that a battery provides electric energy to a power motor of the new energy automobile; measuring the temperature of the battery to obtain temperature measurement information, and sending the temperature measurement information to the processor; controlling the starting and stopping modes of the heat dissipation module according to the temperature measurement information; the heat dissipation module discharges heat generated by the battery according to the start-stop mode. The invention selects the start-stop mode according to the temperature change of the battery, realizes the economic selection of the battery refrigeration mode, and efficiently cools the battery under the condition of over-standard heat.
Description
Technical Field
The invention relates to the technical field of battery heat dissipation, in particular to a temperature control method and system based on new energy automobile battery management.
Background
The battery provides new energy automobile's power motor with the electric energy, produces a large amount of heats, increases when following the use of lithium cell, often can make the lithium cell generate heat, and then can lead to the problem that the lithium cell takes place to bulge, and the electronic component that can make in the device for a long time is impaired, consequently just needs lithium cell heat dissipation method to carry out temperature regulation at the in-process that uses the lithium cell.
Chinese patent CN2016103978585 discloses a battery pack heat dissipation system, which realizes uniform heat dissipation of each battery module in a battery pack by adjusting the amount of air blown to each battery module by an air supply device, but in the prior art, the battery pack cannot be rapidly cooled by performing targeted air cooling on each battery pack.
The technical problem to be solved by the technical staff in the field is to select the economic cooling mode of the battery and rapidly cool the battery under the condition of over-standard heat.
Disclosure of Invention
In view of this, the invention provides a temperature control method and system based on battery management of a new energy vehicle, so as to achieve the purpose of efficiently cooling a battery by selecting a start-stop mode according to the temperature change of the battery.
In order to achieve the purpose, the invention adopts the following technical scheme:
a temperature control method based on new energy automobile battery management specifically comprises the following steps:
the battery provides electric energy to a power motor of the new energy automobile;
measuring the temperature of the battery to obtain temperature measurement information, and sending the temperature measurement information to the processor;
controlling a starting and stopping mode of the heat dissipation module according to the temperature measurement information;
the heat dissipation module discharges heat generated by the battery according to the start-stop mode.
Optionally, the method for controlling the start-stop mode of the heat dissipation module according to the temperature measurement information includes:
comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode; the starting and stopping mode comprises a stopping mode, a first starting mode, a second starting mode and a third starting mode;
the processor sends an enabling instruction to the air cooling module in the first starting mode, and respectively sends the enabling instruction to the air cooling module and the water cooling module in the second starting mode;
the air cooling module carries out air cooling on the battery according to the enabling instruction;
and the water cooling module carries out water cooling on the battery according to the enabling instruction.
Optionally, the method for performing air cooling on the battery by the air cooling module according to the enabling instruction includes:
the contact plate conducts heat on the surface of the battery to the radiating fin;
the fan is started after receiving the enabling instruction;
the fan enables the wind in the flowing space to flow in a starting state;
the flowing wind and the radiating fins exchange heat to be converted into hot wind, and the hot wind is discharged out of the flowing space to the outside of the vehicle body.
Optionally, the method for performing air cooling on the battery by the air cooling module according to the enabling instruction further includes:
selecting whether the air duct part is connected to the flowing space;
if the air duct part is selected to be connected into the flowing space, the air duct part leads the refrigerating outlet air of the vehicle-mounted air conditioner into the flowing space;
if the air duct part is not connected to the flowing space, the natural wind is introduced into the flowing space.
Optionally, the method for performing water cooling on the battery by the water cooling module according to the enabling instruction includes:
the circulating pump is started when receiving the enabling instruction;
the circulating pump enables the cooling water in the water cooling pipe to flow in a starting state;
cooling water circulates to a flow space position in the water-cooling pipe to absorb heat energy;
the cooling water circulates in the water cooling pipe to the cold discharge position to release heat energy.
Corresponding to the method, the invention also discloses a temperature control system based on the battery management of the new energy automobile, which comprises the following steps: the device comprises a battery, a temperature detection module, a processor and a heat dissipation module;
the battery is used for providing electric energy to a power motor of the new energy automobile;
the temperature detection module is used for measuring the temperature of the battery to obtain temperature measurement information and sending the temperature measurement information to the processor;
the processor is used for controlling the start-stop mode of the heat dissipation module according to the temperature measurement information;
the heat dissipation module is used for discharging heat generated by the battery according to the start-stop mode.
Optionally, the heat dissipation module comprises an air cooling module and a water cooling module;
the processor is used for comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode, wherein the start-stop mode comprises a stop mode, a first start mode and a second start mode;
the air cooling module is used for receiving an enabling instruction sent by the processor in a first starting mode or a second starting mode;
and the water cooling module receives an enabling instruction sent by the processor in the second starting mode.
Optionally, the air cooling module comprises: the fan, the contact plate, the substrate and the radiating fins;
the contact plate is fixedly connected with the substrate through the radiating fin; wherein a flow space for wind to flow is formed between the contact plate and the substrate;
the fan is used for enabling the wind in the flowing space to flow through the processor; the fan is started in a first starting mode and a second starting mode.
Optionally, the air cooling module further includes: an air duct portion and a vehicle-mounted air conditioner;
the vehicle-mounted air conditioner is used for refrigerating;
the air duct portion is used for selecting whether to introduce the refrigeration air outlet of the vehicle-mounted air conditioner into the flowing space.
Optionally, the water cooling module comprises a water cooling pipe, a circulating pump and a cold drain;
the water cooling pipe is used for carrying out heat exchange on the flowing space and the cold row through the carried cooling water; the water cooling pipe is arranged outside the flow space and is fixedly connected with the cold row;
the circulating pump is used for enabling the cooling water in the water cooling pipe to flow under the enabling of the processor; and the circulating pump is started in a second starting mode, the cooling water circulates to the flowing space position in the water-cooling pipe to absorb heat energy, and the cooling water circulates to the cold discharge position in the water-cooling pipe to release heat energy.
According to the technical scheme, compared with the prior art, the invention discloses and provides a temperature control method and system based on new energy automobile battery management, so that the following beneficial effects can be obtained:
the refrigeration mode is selected through the multistage starting mode, the method for efficiently reducing the temperature of the battery is selected under the ultra-high temperature state of the battery, the damage of the high temperature to the battery is effectively avoided, more economical selection is carried out when the temperature of the battery is slightly higher than the normal temperature, the operating cost of the system is reduced, and the service life of the system is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a temperature control method based on battery management of a new energy vehicle according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the invention discloses a temperature control method based on battery management of a new energy vehicle, which specifically includes the following steps:
the battery provides electric energy to a power motor of the new energy automobile;
measuring the temperature of the battery to obtain temperature measurement information, and sending the temperature measurement information to the processor;
controlling a starting and stopping mode of the heat dissipation module according to the temperature measurement information;
the heat dissipation module discharges heat generated by the battery according to the start-stop mode.
Further, the method for controlling the start-stop mode of the heat dissipation module according to the temperature measurement information comprises the following steps:
comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode; the starting and stopping mode comprises a stopping mode, a first starting mode, a second starting mode and a third starting mode;
the processor sends an enabling instruction to the air cooling module in the first starting mode, and respectively sends the enabling instruction to the air cooling module and the water cooling module in the second starting mode;
the air cooling module carries out air cooling on the battery according to the enabling instruction;
and the water cooling module carries out water cooling on the battery according to the enabling instruction.
Further, the method for the air cooling module to cool down the battery through air cooling according to the enabling instruction comprises the following steps:
the contact plate conducts heat on the surface of the battery to the radiating fin;
the fan is started after receiving the enabling instruction;
the fan enables the wind in the flowing space to flow in a starting state;
the flowing wind and the radiating fins exchange heat to be converted into hot wind, and the hot wind is discharged out of the flowing space to the outside of the vehicle body.
Further, the method for the air cooling module to cool down the battery by air cooling according to the enabling instruction further comprises the following steps:
selecting whether the air duct part is connected to the flowing space;
if the air duct part is selected to be connected into the flowing space, the air duct part leads the refrigerating outlet air of the vehicle-mounted air conditioner into the flowing space;
if the air duct part is not connected to the flowing space, the natural wind is introduced into the flowing space.
Further, the method for performing water cooling on the battery by the water cooling module according to the enabling instruction comprises the following steps:
the circulating pump is started when receiving the enabling instruction;
the circulating pump enables the cooling water in the water cooling pipe to flow in a starting state;
cooling water circulates to a flow space position in the water-cooling pipe to absorb heat energy;
the cooling water circulates in the water cooling pipe to the cold discharge position to release heat energy.
Corresponding to the method, the invention also discloses a temperature control system based on the battery management of the new energy automobile, which comprises the following steps: the device comprises a battery, a temperature detection module, a processor and a heat dissipation module;
the battery is used for providing electric energy to a power motor of the new energy automobile;
the temperature detection module is used for measuring the temperature of the battery to obtain temperature measurement information and sending the temperature measurement information to the processor;
the processor is used for controlling the start-stop mode of the heat dissipation module according to the temperature measurement information;
the heat dissipation module is used for discharging heat generated by the battery according to the start-stop mode.
Furthermore, the temperature detection modules adopt temperature sensors, and the number of the temperature detection modules arranged on the battery is a positive integer greater than or equal to one.
Further, the heat dissipation module comprises an air cooling module and a water cooling module;
the processor is used for comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode, wherein the start-stop mode comprises a stop mode, a first start mode and a second start mode;
the air cooling module is used for receiving an enabling instruction sent by the processor in a first starting mode or a second starting mode;
and the water cooling module receives an enabling instruction sent by the processor in the second starting mode.
Furthermore, the temperature control system comprises a plurality of temperature monitoring points of a processor and a temperature detection module, each temperature monitoring point comprises a temperature sensor, the temperature sensors are used for acquiring temperature information of the temperature monitoring point, and further correspondingly generating a group of analog signals and transmitting the analog signals to the processor, the processor presets a first temperature threshold, a second temperature threshold and a third temperature threshold of each temperature monitoring point, converts the analog signals transmitted by the temperature sensors into digital signals to represent the instant temperature of each temperature monitoring point, is used for respectively comparing the instant temperature of each temperature monitoring point with the first temperature threshold and the second temperature threshold and controlling the wind equipment to be in an enabling mode or a sleeping mode according to a comparison result, wherein the monitoring point with the instant temperature greater than the first temperature threshold and less than the second temperature threshold is judged as a first alarm point, the monitoring point with the instant temperature greater than the second temperature threshold and less than the third temperature threshold is judged as a second alarm point, and the instant temperature greater than the third temperature threshold is judged as a third alarm point; if the first alarm point, the second alarm point and the third alarm point do not exist, the sleep mode is determined; judging the mode to be a first starting mode if the first alarm point exists and the first alarm point number is smaller than a first alarm point number threshold value, and judging the mode to be a second starting mode if the first alarm point exists and the first alarm point number is larger than the first alarm point number threshold value; if the second alarm point exists and the second alarm point number is smaller than the second alarm point number threshold value, the starting mode is judged to be a second starting mode, and if the second alarm point exists and the second alarm point number is larger than the second alarm point number threshold value, the starting mode is judged to be a third starting mode; if the third alarm point exists, judging the mode to be a third starting mode; the authority of the second starting mode is forcibly larger than that of the second starting mode, the authority of the second starting mode is forcibly larger than that of the first starting mode, and the authority of the first starting mode is forcibly larger than that of the dormant mode; the set number of the temperature monitoring points is 20, the threshold value of the number of the first alarm points is 5, the threshold value of the number of the second alarm points is 5, the threshold value of the first temperature is 30 ℃, the threshold value of the second temperature is 40 ℃, and the threshold value of the third temperature is 60 ℃.
The heat dissipation module further comprises a liquid nitrogen cooling device, the liquid nitrogen cooling device is arranged in the flowing space, the start-stop mode further comprises a third starting mode, and the processor sends an enabling instruction to the liquid nitrogen cooling device in the third starting mode; the processor sends enabling instructions to the fan in a first starting mode, a second starting mode and a third starting mode; and the processor sends an enabling instruction to the circulating pump in the second starting mode and the third starting mode.
Further, the air-cooling module includes: the fan, the contact plate, the substrate and the radiating fins;
the contact plate is fixedly connected with the substrate through the radiating fin; wherein a flow space for wind to flow is formed between the contact plate and the substrate;
the fan is used for enabling the wind in the flowing space to flow through the processor; the fan is started in a first starting mode and a second starting mode.
Furthermore, the system comprises at least one flowing space, a contact plate is attached to the surface of the battery and used for conducting heat on the surface of the battery to a radiating fin, the contact plate is made of copper metal or copper alloy to provide high heat conducting performance, and the substrate is made of rigid materials such as iron metal or iron alloy materials to provide stability for the structure; at least one flow space for a temperature control fluid is formed between the contact plate and the substrate; the fan is arranged in the flow space and used for exhausting wind out of the flow space or introducing wind into the flow space.
Further, the air-cooled module still includes: an air duct portion and a vehicle-mounted air conditioner;
the vehicle-mounted air conditioner is used for refrigerating;
the air duct portion is used for selecting whether to introduce the refrigeration air outlet of the vehicle-mounted air conditioner into the flowing space.
Further, the water cooling module comprises a water cooling pipe, a circulating pump and a cold drain;
the water cooling pipe is used for carrying out heat exchange on the flowing space and the cold row through the carried cooling water; the water cooling pipe is arranged outside the flow space and is fixedly connected with the cold row;
the circulating pump is used for enabling the cooling water in the water cooling pipe to flow under the enabling of the processor; and the circulating pump is started in a second starting mode, the cooling water circulates to the flowing space position in the water-cooling pipe to absorb heat energy, and the cooling water circulates to the cold discharge position in the water-cooling pipe to release heat energy.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A temperature control method based on new energy automobile battery management is characterized by comprising the following specific steps:
the battery provides electric energy to a power motor of the new energy automobile;
measuring the temperature of the battery to obtain temperature measurement information, and sending the temperature measurement information to the processor;
controlling a starting and stopping mode of the heat dissipation module according to the temperature measurement information;
the heat dissipation module discharges heat generated by the battery according to the start-stop mode.
2. The temperature control method based on new energy automobile battery management according to claim 1, wherein the method for controlling the start-stop mode of the heat dissipation module according to the temperature measurement information comprises the following steps:
comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode; the starting and stopping mode comprises a stopping mode, a first starting mode, a second starting mode and a third starting mode;
the processor sends an enabling instruction to the air cooling module in the first starting mode, and respectively sends the enabling instruction to the air cooling module and the water cooling module in the second starting mode;
the air cooling module carries out air cooling on the battery according to the enabling instruction;
and the water cooling module carries out water cooling on the battery according to the enabling instruction.
3. The temperature control method based on new energy automobile battery management according to claim 2, wherein the method for the air cooling module to cool the battery by air cooling according to the enabling instruction comprises the following steps:
the contact plate conducts heat on the surface of the battery to the radiating fin;
the fan is started after receiving the enabling instruction;
the fan enables the wind in the flowing space to flow in a starting state;
the flowing wind and the radiating fins exchange heat to be converted into hot wind, and the hot wind is discharged out of the flowing space to the outside of the vehicle body.
4. The temperature control method based on new energy automobile battery management according to claim 3, wherein the method for the air cooling module to cool the battery by air cooling according to the enabling instruction further comprises:
selecting whether the air duct part is connected to the flowing space;
if the air duct part is selected to be connected into the flowing space, the air duct part leads the refrigerating outlet air of the vehicle-mounted air conditioner into the flowing space;
if the air duct part is not connected to the flowing space, the natural wind is introduced into the flowing space.
5. The temperature control method based on new energy automobile battery management according to claim 3, wherein the method for performing water cooling on the battery by the water cooling module according to the enabling instruction comprises the following steps:
the circulating pump is started when receiving the enabling instruction;
the circulating pump enables the cooling water in the water cooling pipe to flow in a starting state;
cooling water circulates to a flow space position in the water-cooling pipe to absorb heat energy;
the cooling water circulates in the water cooling pipe to the cold discharge position to release heat energy.
6. The utility model provides a temperature control system based on new energy automobile battery management which characterized in that includes: the device comprises a battery, a temperature detection module, a processor and a heat dissipation module;
the battery is used for providing electric energy to a power motor of the new energy automobile;
the temperature detection module is used for measuring the temperature of the battery to obtain temperature measurement information and sending the temperature measurement information to the processor;
the processor is used for controlling the starting and stopping modes of the heat dissipation module according to the temperature measurement information;
the heat dissipation module is used for discharging heat generated by the battery according to the start-stop mode.
7. The temperature control system based on new energy automobile battery management as claimed in claim 6, wherein the heat dissipation module comprises an air cooling module and a water cooling module;
the processor is used for comparing and judging temperature numerical value information and over-temperature quantity information in the temperature measurement information with corresponding numerical value threshold values and quantity threshold values to obtain a start-stop mode, wherein the start-stop mode comprises a stop mode, a first start mode and a second start mode;
the air cooling module is used for receiving an enabling instruction sent by the processor in a first starting mode or a second starting mode;
and the water cooling module receives an enabling instruction sent by the processor in the second starting mode.
8. The temperature control system based on new energy automobile battery management of claim 7, characterized in that the air cooling module comprises: the fan, the contact plate, the substrate and the radiating fins;
the contact plate is fixedly connected with the substrate through the radiating fin; wherein a flow space for wind to flow is formed between the contact plate and the substrate;
the fan is used for enabling the wind in the flowing space to flow through the processor; the fan is started in a first starting mode and a second starting mode.
9. The temperature control system based on new energy automobile battery management of claim 8, characterized in that the air cooling module further comprises: an air duct portion and a vehicle-mounted air conditioner;
the vehicle-mounted air conditioner is used for refrigerating;
the air duct portion is used for selecting whether to introduce the refrigeration air outlet of the vehicle-mounted air conditioner into the flowing space.
10. The temperature control system based on new energy automobile battery management as claimed in claim 8, wherein the water cooling module comprises a water cooling pipe, a circulating pump and a cold drain;
the water cooling pipe is used for carrying out heat exchange on the flowing space and the cold row through the carried cooling water; the water cooling pipe is arranged outside the flow space and is fixedly connected with the cold row;
the circulating pump is used for enabling the cooling water in the water cooling pipe to flow under the enabling of the processor; and the circulating pump is started in a second starting mode, the cooling water circulates to the flowing space position in the water-cooling pipe to absorb heat energy, and the cooling water circulates to the cold discharge position in the water-cooling pipe to release heat energy.
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